WO2023221664A1 - 多联机空调系统的控制方法、控制装置和多联机空调系统 - Google Patents

多联机空调系统的控制方法、控制装置和多联机空调系统 Download PDF

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Publication number
WO2023221664A1
WO2023221664A1 PCT/CN2023/085160 CN2023085160W WO2023221664A1 WO 2023221664 A1 WO2023221664 A1 WO 2023221664A1 CN 2023085160 W CN2023085160 W CN 2023085160W WO 2023221664 A1 WO2023221664 A1 WO 2023221664A1
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WIPO (PCT)
Prior art keywords
temperature
conditioning system
air conditioning
split air
indoor unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/085160
Other languages
English (en)
French (fr)
Inventor
王正兴
陶骙
黎顺全
朱合华
宋磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
GD Midea Air Conditioning Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD Midea Air Conditioning Equipment Co Ltd filed Critical GD Midea Air Conditioning Equipment Co Ltd
Priority to AU2023270990A priority Critical patent/AU2023270990B2/en
Priority to EP23806622.9A priority patent/EP4517205A4/en
Priority to US18/857,408 priority patent/US20260085851A1/en
Publication of WO2023221664A1 publication Critical patent/WO2023221664A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/60—Energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/52—Weather protecting means, e.g. against wind, rain or snow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/021—Inverters therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/025—Compressor control by controlling speed
    • F25B2600/0253—Compressor control by controlling speed with variable speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to the technical field of air conditioning, and in particular to a control method, a control device and a multi-line air conditioning system.
  • the multi-split air conditioning system refers to a refrigerant circulation system composed of one outdoor unit and multiple indoor units. Since the multi-split air conditioning system has different operating states, when the multi-split air conditioning system starts the heating function, if it has been running before starting Heating, the indoor unit has accumulated heat. If the heating function is started again at this time, according to the conventional heating control mode, the indoor unit is controlled to start the anti-cold wind function at the initial startup, which may easily cause the indoor unit to fail to dissipate heat in time and cause a high-voltage trip. The problem.
  • the present invention aims to at least partially solve one of the technical problems existing in the prior art. To this end, the present invention proposes a control method, a control device and a multi-connected air conditioning system, which can effectively reduce the problem of high-voltage tripping.
  • inventions of the present invention provide a control method for a multi-connected air conditioning system.
  • the multi-connected air conditioning system includes an outdoor unit and a plurality of indoor units. At least one of the plurality of indoor units is in a running state.
  • the control method includes: during the heating start-up phase, obtaining the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all the running indoor units; when based on the indoor ambient temperature and all The evaporator tube temperature of the running indoor unit determines that the current starting state of the multi-split air conditioning system is a hot starting state, and the fan of the running indoor unit is controlled to operate with a first set windshield, wherein the first setting The fixed windshield is the highest windshield among multiple set windshields.
  • the control method of a multi-split air conditioning system at least has the following beneficial effects: by obtaining the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units during the heating start-up phase, and The current starting state of the multi-split air conditioning system is determined based on the indoor ambient temperature and the evaporator tube temperatures of all running indoor units. When it is determined that the current starting status of the multi-split air conditioning system is the hot start state, the fan of the running indoor unit is controlled to the first setting. Fixed windshield operation can speed up the heat dissipation of the running indoor unit, effectively reduce the problem of high-voltage tripping, ensure that the running indoor unit can heat normally, and help improve the user experience.
  • control method when it is determined that the current starting state of the multi-split air conditioning system is a hot start state, the control method further includes: controlling the compressor of the outdoor unit to run at a first platform frequency a first set time; after the compressor runs for the first set time, control the compressor to run at a set frequency, wherein the first platform frequency is greater than the set frequency.
  • the compressor of the outdoor unit By controlling the compressor of the outdoor unit to run at the first platform frequency for the first set time during the heating start-up phase, it is ensured that the four-way valve can reverse direction normally. After the compressor runs for the first set time, the compressor is then controlled to run at the first platform frequency. Running at a lower set frequency ensures that the multi-split air conditioning system can heat normally, avoids rapid frequency increase of the compressor, reduces high-frequency running time, and can effectively reduce the problem of high-voltage tripping.
  • control method further includes: determining that the current starting state of the multi-split air conditioning system is cold based on the indoor ambient temperature and the evaporator tube temperatures of all the operating indoor units.
  • the compressor In the starting state, the compressor is controlled to run at a second platform frequency for a second set time, the second platform frequency is greater than the first platform frequency and the second set time is greater than the first set time. ; After the compressor runs for the second set time, control the compressor to run at a set frequency, wherein the second platform frequency is greater than the set frequency.
  • the compressor of the outdoor unit is controlled to run for the second set time at the second platform frequency to ensure The four-way valve can reverse direction normally. After the compressor runs for the second set time, the compressor is controlled to run at a lower set frequency to ensure that the multi-split air conditioning system can heat normally and avoid rapid frequency increase of the compressor, which is effective Reduce the problem of high voltage tripping.
  • control method when it is determined that the current starting state of the multi-split air conditioning system is a cold start state, the control method further includes: controlling the fan running the indoor unit to enter the anti-cold wind mode; when When the evaporator tube temperature of the running indoor unit is greater than the first set temperature, the anti-cold wind mode is exited, and the fan of the running indoor unit is controlled to operate with a first set windshield, wherein the first set windshield is The highest windshield among multiple set windshields.
  • the evaporator tube temperature of the running indoor unit is relatively low and is usually balanced with the indoor ambient temperature.
  • the multi-split air conditioning system is in Within a stable pressure range, the operation can be controlled first
  • the fan of the indoor unit enters the anti-cold wind mode to avoid the problem of blowing out cold wind in the initial stage of startup and affecting the user's comfort.
  • the evaporator tube temperature will gradually rise.
  • the evaporator tube of the indoor unit When the evaporator tube of the indoor unit is running, If the temperature is greater than the first set temperature, the anti-cold wind mode will be exited and the fan running the indoor unit will be controlled to run at the first set windshield. That is, the fan running the indoor unit will be controlled to run at the highest windshield, which can speed up the heat dissipation of the indoor unit and ensure The indoor unit works stably during the heating process, avoiding high-voltage tripping and stopping, and ensuring good heating effects.
  • control method also includes: when a preset condition is met, controlling the operating windshield of the fan to switch from the first set windshield to the second set windshield; wherein, the The preset conditions include at least one of the following: the fan continues to operate with the first set windshield for longer than the third set time; the evaporator tube temperature of the operating indoor unit is continuously within the preset temperature range. The time is greater than the fourth set time.
  • the first set windshield is larger than the second set windshield.
  • the heating capacity of the running indoor unit can be increased.
  • the fan's operating windshield can be controlled to lower to the second set windshield.
  • control method after controlling the compressor to operate at a set frequency, the control method further includes: calculating an average tube temperature based on the evaporator tube temperatures of all operating indoor units; The operating frequency of the compressor is adjusted based on the average tube temperature.
  • the operating frequency of the compressor is corrected based on the evaporator tube temperature of the running internal unit.
  • the operating frequency of the compressor is corrected based on the evaporator tube temperature of all running internal units.
  • the pipe temperature is calculated to obtain the average pipe temperature, and the operating frequency of the compressor is adjusted according to the average pipe temperature to ensure that the compressor operates in a normal heating state. By calculating the average pipe temperature, the control accuracy can be improved.
  • the adjustment of the operating frequency of the compressor according to the average pipe temperature includes: when the average pipe temperature is less than the second set temperature and the first set value The difference between the two is to increase the operating frequency of the compressor; when the average pipe temperature is greater than the sum of the second set temperature and the first set value, the operating frequency of the compressor is reduced.
  • the second set temperature is the heating target temperature
  • the first set value is a correction value, which can make the current heating temperature within the heating target range. If the average pipe temperature is less than the second set temperature and The difference between the first set value means that the current heating temperature is not high enough. Increase the operating frequency of the compressor, that is, frequency increase correction. The operating frequency of the compressor is adjusted one gear at a time; if the average pipe temperature is greater than the second setting The sum of the temperature and the first set value indicates that the current heating temperature has exceeded the heating target range, and the operating frequency of the compressor is reduced, that is, frequency reduction correction. The operating frequency of the compressor is adjusted one gear at a time.
  • the average pipe temperature is greater than or equal to the difference between the second set temperature and the first set value and less than or equal to the sum of the second set temperature and the first set value, it means that the current heating temperature is within the heating target range. , there is no need to adjust the operating frequency of the compressor.
  • At least one of the plurality of indoor units is a standby indoor unit in a standby state.
  • the control method further includes: when the evaporator tube temperature of the operating indoor unit is greater than the set The difference between the shutdown temperature and the second set value is determined, and the multi-split air conditioning system is controlled to enter the high temperature trip stop assistance mode to assist in reducing the pressure of the multi-split air conditioning system through the standby indoor unit or the outdoor unit.
  • the evaporator tube temperature of the running indoor unit is greater than the difference between the set shutdown temperature and the second set value, it means that the evaporator tube temperature is too high and the pressure of the multi-split air conditioning system is high, that is, the multi-split air conditioning system is at risk of high temperature tripping. , the evaporator tube temperature of the running indoor unit will soon reach the set shutdown temperature.
  • the multi-split air-conditioning system is controlled to enter the high-temperature trip-stop assistance mode, that is, through the standby indoor unit or outdoor unit to assist in reducing the temperature. Pressure in multi-split air conditioning systems.
  • control method also includes: when the multi-split air conditioning system enters the high temperature jump stop assistance mode, determining the environmental state of the space where the standby indoor unit is located, wherein the environment The state includes an occupied state and an unmanned state; if it is determined that the standby internal unit is in an unmanned state, the fan of the standby internal unit is controlled to operate with a third set windshield, wherein the third set windshield is a plurality of settings. The highest windshield among fixed windshields.
  • the multi-split air conditioning system enters the high temperature jump stop assistance mode to determine the environmental state of the space where the standby indoor unit is located. If the standby indoor unit is in In the unmanned state, the fan of the standby internal unit can be controlled to run at the third windshield, that is, the fan of the standby internal unit can be controlled to run at the highest windshield, which can help reduce the pressure of the multi-split air conditioning system. Running the fan of the standby internal unit can avoid affecting the user during the operation of the fan.
  • the outdoor unit is provided with a plurality of electronic expansion valves corresponding to the indoor units.
  • the control method also includes: When all the standby internal units are in a human state, the opening of the electronic expansion valve corresponding to the standby internal unit is adjusted according to the evaporator tube temperature of the operating internal unit.
  • the multi-split air conditioning system enters the high-temperature trip-stop assistance mode. Since the fans are turned off when the standby indoor units are in the occupied state, if all the standby indoor units are in the occupied state and the fans are not turned on, the outdoor unit adjustment and standby The opening of the electronic expansion valve corresponding to the indoor unit thus helps reduce the pressure of the multi-split air conditioning system. Since the high-temperature jump-stop assist mode is triggered by the running indoor unit, it acquires the evaporator tube temperature of the running indoor unit and adjusts the temperature according to the operating temperature. The evaporator tube temperature of the internal unit adjusts the opening of the electronic expansion valve corresponding to the standby internal unit to ensure control accuracy.
  • adjusting the opening of the electronic expansion valve corresponding to the standby indoor unit according to the evaporator tube temperature of the operating indoor unit includes: when the evaporator of the operating indoor unit When the tube temperature is greater than the difference between the set shutdown temperature and the second set value, increase the opening of the electronic expansion valve corresponding to the standby internal unit; when the evaporator tube temperature of the operating indoor unit is less than the difference between the set shutdown temperature and the second set value The difference between the two set values reduces the opening of the electronic expansion valve corresponding to the standby internal unit.
  • the evaporator tube temperature of the running indoor unit is greater than the difference between the set shutdown temperature and the second set value, it means that the evaporator tube temperature of the running indoor unit is too high and the pressure of the multi-split air conditioning system is high, then increase the temperature of the standby indoor unit.
  • the corresponding opening of the electronic expansion valve increases the refrigerant flow and accelerates the pressure reduction of the multi-split air conditioning system.
  • the evaporator tube temperature of the running indoor unit is less than the difference between the set shutdown temperature and the second set value, it means the running indoor unit
  • the evaporator tube temperature is low and the pressure of the multi-split air conditioning system is relatively low, which can reduce the opening of the electronic expansion valve corresponding to the standby internal unit, thereby reducing energy consumption.
  • determining that the current starting state of the multi-split air conditioning system is a hot start state based on the indoor ambient temperature and the evaporator tube temperatures of all operating indoor units includes: Calculate the average tube temperature based on the evaporator tube temperatures of all operating indoor units; when the difference between the average tube temperature and the indoor ambient temperature is greater than the third set temperature, determine the value of the multi-split air conditioning system
  • the current startup state is hot startup state;
  • the control method also includes: when the difference between the average pipe temperature and the indoor ambient temperature is less than or equal to the third set temperature, determining that the current starting state of the multi-split air conditioning system is a cold starting state.
  • the average tube temperature By calculating the average tube temperature based on the evaporator tube temperatures of all running indoor units, it can reflect the pressure temperature of the multi-split air conditioning system, and calculating the average value can improve the accuracy of control and reduce the possibility of misjudgment. If the tube temperature If the difference between the average value and the indoor ambient temperature is greater than the third set temperature, it means that the running indoor unit has run heating before starting, and there is residual heat in the standby indoor unit. It is determined that the current startup state of the multi-split air conditioning system is a hot startup state. If the difference between the average pipe temperature and the indoor ambient temperature is less than or equal to the third set temperature, it means that the indoor unit has not run heating before starting, and the pressure of the multi-split air conditioning system is relatively low. Determine the pressure of the multi-split air conditioning system. The current startup state is a cold startup state.
  • the control method before obtaining the indoor ambient temperature of the space where the operating indoor unit is located and the evaporator tube temperatures of all the operating indoor units, the control method further includes: obtaining the outdoor ambient temperature ; When the outdoor ambient temperature is greater than the fourth set temperature, obtain the first capability capacity of all the operating indoor units and the second capability capacity of the outdoor units; calculate based on the first capability capacity of all the operating indoor units It is determined that the multi-split air conditioning system has a risk of high-temperature tripping based on the second capacity and the sum of the operating internal unit capacities.
  • the multi-split air conditioning system uses the heating function in a high temperature environment.
  • the first capacity of all running indoor units and the second capacity of the outdoor unit and based on all running internal units Calculate the sum of the operating internal unit capacities from the first capacity of the unit, and determine whether the multi-split air conditioning system has a risk of high temperature tripping by comparing the relationship between the second capacity capacity and the sum of the running internal unit capacities.
  • determining that the multi-split air conditioning system has a risk of high-temperature tripping based on the sum of the second capacity capacity and the operating internal unit capacity includes: when the running internal unit If the sum of the capacities is less than the product of the second capacity capacity and the third set value, it is determined that the multi-split air conditioning system has a risk of high temperature tripping.
  • the multi-split air conditioning system has the risk of high-temperature trip and stop.
  • an embodiment of the present invention provides an operation control device, including at least one control processor and a memory for communicative connection with the at least one control processor; the memory stores information that can be processed by the at least one control processor.
  • the instruction is executed by the at least one control processor, so that the at least one control processor can execute the control method of the multi-split air conditioning system as described in the embodiment of the first aspect above.
  • the operation control device provided according to the embodiment of the present invention has at least the following beneficial effects: by obtaining the operation content during the heating startup phase
  • the indoor ambient temperature of the space where the machine is located and the evaporator tube temperatures of all running indoor units are determined, and the current startup status of the multi-split air conditioning system is determined based on the indoor ambient temperature and the evaporator tube temperatures of all running indoor units.
  • the current start-up state is the hot start state. Controlling the fan of the internal unit to run with the first windshield can speed up the heat dissipation of the internal unit, effectively reduce the problem of high-voltage tripping, and ensure that the internal unit can heat normally and have Conducive to improving the user experience.
  • an embodiment of the present invention provides a multi-connected air conditioning system, including the operation control device as described in the embodiment of the second aspect.
  • the multi-split air conditioning system provided according to the embodiment of the present invention at least has the following beneficial effects: by obtaining the indoor ambient temperature of the space where the indoor unit is running and the evaporator tube temperatures of all running indoor units during the heating start-up phase, and based on the indoor environment
  • the temperature and the evaporator tube temperature of all running indoor units determine the current starting status of the multi-split air conditioning system.
  • the fan of the running indoor unit is controlled to run with the first windshield setting. , can speed up the heat dissipation of the running indoor unit, effectively reduce the problem of high-voltage tripping, ensure that the running indoor unit can heat normally, and help improve the user experience.
  • embodiments of the present invention provide a computer-readable storage medium that stores computer-executable instructions, and the computer-executable instructions are used to cause a computer to execute as described in the first embodiment. Control method of multi-split air conditioning system.
  • the computer-readable storage medium provided according to the embodiment of the present invention has at least the following beneficial effects: by acquiring the indoor ambient temperature of the space where the indoor unit is running and the evaporator tube temperatures of all running indoor units during the heating start-up phase, and obtaining the indoor ambient temperature according to the indoor temperature.
  • the ambient temperature and the evaporator tube temperatures of all running indoor units determine the current startup status of the multi-split air conditioning system.
  • the fan of the running indoor unit is controlled to set the windshield first. operation, it can speed up the heat dissipation of the running indoor unit, effectively reduce the problem of high-voltage tripping, ensure that the running indoor unit can heat normally, and help improve the user experience.
  • Figure 1 is a schematic structural diagram of a multi-split air conditioning system provided in Embodiment 1 of the present invention.
  • Figure 2 is a flow chart of the control method of the multi-split air conditioning system provided by Embodiment 2 of the present invention.
  • Figure 3 is a flow chart of a control method of a multi-split air conditioning system provided in Embodiment 3 of the present invention.
  • Figure 4 is a flow chart of a control method of a multi-split air conditioning system provided in Embodiment 4 of the present invention.
  • Figure 5 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 5 of the present invention.
  • Figure 6 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 6 of the present invention.
  • Figure 7 is a flow chart of the control method of the multi-split air conditioning system provided by Embodiment 7 of the present invention.
  • Figure 8 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 8 of the present invention.
  • Figure 9 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 9 of the present invention.
  • Figure 10 is a flow chart of the control method of the multi-split air conditioning system provided by Embodiment 10 of the present invention.
  • Figure 11 is a flow chart of the control method of the multi-split air conditioning system provided by Embodiment 11 of the present invention.
  • Figure 12 is a flow chart of the control method of the multi-split air conditioning system provided by Embodiment 12 of the present invention.
  • Figure 13 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 13 of the present invention.
  • Figure 14 is a flow chart of the control method of the multi-split air conditioning system provided in Embodiment 14 of the present invention.
  • Figure 15 is a flow chart of the control method of the multi-split air conditioning system in the cold control mode provided by Embodiment 15 of the present invention.
  • Figure 16 is a flow chart of the control method of the multi-split air conditioning system in the thermal control mode provided by Embodiment 16 of the present invention.
  • Figure 17 is a schematic structural diagram of an operation control device provided in Embodiment 17 of the present invention.
  • connection/connection should be understood in a broad sense.
  • it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be Mechanical connection can also be electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium.
  • control method, control device and multi-split air conditioning system provided by the embodiments of the present invention can effectively reduce the problem of high voltage tripping.
  • FIG. 1 shows a schematic structural diagram of a multi-split air conditioning system.
  • the multi-split air conditioning system includes an outdoor unit 100 and a plurality of indoor units 200.
  • the indoor unit 200 includes an evaporator 210 and a fan disposed at the evaporator 210. 220.
  • the outdoor unit 100 includes a condenser 110, a compressor 120, a four-way valve 130 and a plurality of electronic expansion valves 140.
  • Each electronic expansion valve 140 is connected to a corresponding evaporator 210.
  • the electronic expansion valve 140 is used to adjust the refrigerant flow rate.
  • the compressor 120 is connected to a four-way valve 130, which is connected to the condenser 110 and the evaporator 210 of each indoor unit 200 respectively.
  • the four-way valve 130 is used to reverse the refrigerant cycle, thereby realizing the refrigeration operation mode and Switching between heating operating modes.
  • multi-split air conditioning system shown in Figure 1 does not limit the embodiment of the present invention, and may include more or less components than shown in the figure, or some components may be combined or different. component layout.
  • At least one of the multiple indoor units is an operating indoor unit in a running state.
  • the operating indoor unit can also be called an indoor unit with capacity demand.
  • the capacity demand refers to There is a difference between the set temperature of the indoor unit and the indoor ambient temperature, which requires the outdoor unit to provide load so that the indoor ambient temperature meets user needs or functional requirements.
  • Step S110 During the heating start-up phase, obtain the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units.
  • the multi-split air conditioning system can reflect the The pressure temperature of the system. If the running indoor unit has been running for heating before starting, heat will accumulate in the running indoor unit, and the evaporator tube temperature will be relatively high, so that the evaporator tube temperature will be different from the space where the running indoor unit is located. The indoor ambient temperature is at a certain difference.
  • Step S120 When it is determined that the current starting state of the multi-split air conditioning system is a hot starting state based on the indoor ambient temperature and the evaporator tube temperatures of all running indoor units, control the fans of the running indoor units to run with the first set windshield, where, the One set windshield is the highest windshield among multiple set windshields.
  • the current startup status of the multi-split air conditioning system can be determined based on the indoor ambient temperature of the space where any running indoor unit is located and the evaporator tube temperatures of all running indoor units. If the current startup status of the multi-split air conditioning system is hot status, it means that the multi-split air conditioning system has been running heating before this heating start. The reason may be that the multi-split air conditioning system has just ended the heating mode and then restarted soon, or the multi-split air conditioning system has failed to protect itself. Jumps to a stop and restarts. The indoor unit usually activates the anti-cold wind function during the heating start-up phase.
  • the anti-cold wind function controls the fan of the indoor unit to be temporarily turned on or to turn on the breeze state.
  • the first set windshield is the highest windshield among multiple set windshields
  • controlling the fan of the indoor unit to run with the first set windshield that is, controlling the fan of the indoor unit to run with the highest windshield
  • directly operating the fan at the beginning of the startup High wind speed can speed up heat dissipation and improve the reliability of indoor machine operation.
  • the control method of the multi-split air-conditioning system obtaineds the indoor ambient temperature of the space where the indoor unit is operating and the evaporator tube temperatures of all running indoor units during the heating start-up phase, and adjusts the control method according to the indoor ambient temperature and The evaporator tube temperatures of all running indoor units determine the current startup status of the multi-split air conditioning system.
  • the fan of the running indoor unit is controlled to run with the first windshield setting, which can It speeds up the heat dissipation of the running indoor unit, effectively reduces the problem of high-voltage tripping, and ensures that the running indoor unit can heat normally, which is beneficial to improving the user experience.
  • control method of the multi-split air conditioning system when it is determined that the current starting state of the multi-split air conditioning system is a hot state In the starting state, the control method of the multi-split air conditioning system also includes but is not limited to step S210 and step S220:
  • Step S210 Control the compressor of the outdoor unit to run at the first platform frequency for the first set time
  • Step S220 After the compressor runs for a first set time, control the compressor to run at a set frequency, where the first platform frequency is greater than the set frequency.
  • the direct operation target is usually low. Frequency measures, but this will make the suction and exhaust pressure difference of the multi-split air conditioning system small, lower than the reversing driving force of the four-way valve. The four-way valve cannot complete the reversal and air will leak, causing the multi-split air conditioning system to be unable to heat normally.
  • the embodiment of the present invention controls the compressor of the outdoor unit to run at the first platform frequency for the first set time during the heating startup phase to ensure that the four-way valve can operate normally. Reversal, after the compressor runs for the first set time, the compressor is then controlled to run at a lower set frequency to ensure that the multi-split air conditioning system can heat normally, avoid rapid frequency increase of the compressor, and reduce high-frequency running time. It can effectively reduce the problem of high voltage tripping.
  • the set frequency is the lowest heating frequency
  • the first platform frequency is usually a relatively high frequency
  • the first set time is usually a short set time. It is understandable that during heating During the startup phase, the compressor is controlled to run at the first startup platform, that is, the compressor is controlled to run at the first platform frequency for the first set time. On the premise of ensuring that the four-way valve can be reversed, the compressor is controlled to run at high frequency for a short time. This allows the multi-split air-conditioning system to have a high and low pressure difference, and then immediately run at the set frequency, thereby reducing the occurrence of high-voltage tripping and stopping while ensuring the normal operation of the heating function of the multi-split air-conditioning system.
  • the above control method of the multi-split air conditioning system also includes but is not limited to step S310 and step S320:
  • Step S310 When it is determined that the current starting state of the multi-split air conditioning system is a cold starting state based on the indoor ambient temperature and the evaporator tube temperatures of all operating indoor units, the compressor is controlled to run at the second platform frequency for the second set time, and the second The platform frequency is greater than the first platform frequency and the second set time is greater than the first set time;
  • Step S320 After the compressor runs for the second set time, control the compressor to run at the set frequency, where the second platform frequency is greater than the set frequency.
  • the compressor of the outdoor unit is controlled to run for the second set time at the second platform frequency to ensure The four-way valve can reverse direction normally. After the compressor runs for the second set time, the compressor is controlled to run at a lower set frequency to ensure that the multi-split air conditioning system can heat normally and avoid rapid frequency increase of the compressor, which is effective Reduce the problem of high voltage tripping.
  • the set frequency is the lowest heating frequency
  • the second platform frequency is usually a relatively high frequency
  • the second set time is usually a short set time. It is understandable that during heating During the startup phase, the compressor is controlled to run at the second startup platform, that is, the compressor is controlled to run at the second platform frequency for the second set time, thereby reducing the occurrence of high-pressure tripping while ensuring the normal operation of the heating function of the multi-split air conditioning system.
  • the current startup status of the multi-split air conditioning system includes hot startup status and cold startup status.
  • different control measures are taken for the compressor during the heating startup phase: when determining The current start-up state of the multi-split air conditioning system is a hot start state.
  • the compressor of the outdoor unit runs at the first platform frequency for the first set time. After the compressor runs for the first set time, the compressor is controlled to run at the set frequency.
  • control method of the multi-split air conditioning system when it is determined that the current starting state of the multi-split air conditioning system is a cold start state, the control method of the multi-split air conditioning system also includes but is not limited to step S410 and step S420. :
  • Step S410 Control the fan running the indoor unit to enter the anti-cold wind mode
  • Step S420 When the evaporator tube temperature of the indoor unit is greater than the first set temperature, the anti-cold wind mode is exited, and the fan of the indoor unit is controlled to run with the first set windshield, where the first set windshield is a plurality of settings. The highest windshield among windshields.
  • the evaporator tube temperature of the running indoor unit is relatively low and is usually balanced with the indoor ambient temperature.
  • the multi-split air conditioning system is in Within a stable pressure range, you can first control the fan of the indoor unit to enter the anti-cold wind mode to avoid the problem of cold wind blowing out in the initial stage of startup, which affects the user's comfort.
  • the evaporator tube temperature will gradually decrease. rises, when the evaporator tube temperature of the running indoor unit is greater than the first set temperature, the alarm will exit.
  • Cold air mode controls the fan running the indoor unit to run at the first windshield, that is, controls the fan running the indoor unit to run at the highest windshield, which can speed up the heat dissipation of the indoor unit and ensure that the indoor unit works stably during the heating process. Avoid high-voltage tripping and stop to ensure good heating effect.
  • the first set temperature is the anti-cold wind temperature. If the evaporator tube temperature of the running indoor unit is less than or equal to the first set temperature, it means that the internal temperature of the running indoor unit is relatively low. At this time, if the fan is turned on or the fan is set to high When the machine is running, the cold wind blown by the fan can easily make the user feel uncomfortable; if the evaporator tube temperature of the running indoor unit is greater than the first set temperature, the wind blown by the fan will not make the user feel uncomfortable. At this time, you can exit the anti-cold wind mode and control the running indoor unit.
  • the fan of the machine operates with the first windshield setting to ensure the reliability of the operation of the internal unit and at the same time improve the heating effect of the internal unit.
  • the above control method of the multi-split air conditioning system also includes the following steps:
  • the operating windshield of the fan is controlled to switch from the first set windshield to the second set windshield;
  • the preset conditions include at least one of the following:
  • the fan continues to run with the first set windshield for longer than the third set time
  • the evaporator tube temperature of the running indoor unit is continuously within the preset temperature range for longer than the fourth set time.
  • the first set windshield is larger than the second set windshield.
  • the heating capacity of the running indoor unit can be increased.
  • the fan's operating windshield can be controlled to lower to the second set windshield.
  • the first windshield setting is the highest windshield, and the second windshield setting is usually the low windshield or the middle windshield set by the user.
  • the first running time is the time the fan continues to run with the first set windshield.
  • the first running time is greater than the third set time, Switch the fan's operating windshield from the first setting windshield to the second setting windshield; during the heating process of the indoor unit, the evaporator tube temperature gradually increases and is satisfied within the preset temperature range.
  • the timing starts and is recorded as the second running time.
  • the second running time is the time during which the evaporator tube temperature of the running indoor unit is continuously within the preset temperature range.
  • the operating windshield of the fan can be switched from the first setting windshield to the second setting windshield, which is beneficial to reducing energy consumption. Consumption.
  • the current startup status of the multi-split air conditioning system includes hot startup status and cold startup status.
  • different control measures are taken for the running indoor unit: when it is determined that the current start-up state of the multi-split air conditioning system is a hot start state, the fan of the indoor unit is controlled to run with the first windshield; when it is determined that the current start-up state of the multi-split air conditioning system is a cold start state, the indoor unit is first controlled to run The fan enters the anti-cold wind mode. When the evaporator tube temperature of the running indoor unit is greater than the first set temperature, the fan of the running indoor unit is then controlled to run with the first set windshield.
  • the start-up state controls the fan of the indoor unit to ensure the stability of the multi-split air conditioning system.
  • control method of the multi-connected air conditioning system after controlling the compressor to run at the set frequency, the control method of the multi-connected air conditioning system also includes but is not limited to step S510 and step S520:
  • Step S510 Calculate the average tube temperature based on the evaporator tube temperatures of all running indoor units
  • Step S520 Adjust the operating frequency of the compressor according to the average pipe temperature.
  • the operating frequency of the compressor is corrected based on the evaporator tube temperature of the running internal unit.
  • the operating frequency of the compressor is corrected based on the evaporator tube temperature of all running internal units.
  • the pipe temperature is calculated to obtain the average pipe temperature, and the operating frequency of the compressor is adjusted according to the average pipe temperature to ensure that the compressor operates in a normal heating state. By calculating the average pipe temperature, the control accuracy can be improved.
  • the operating frequency of the compressor is adjusted according to the average pipe temperature in step S520, including but not limited to step S610 and step S620:
  • Step S610 When the average pipe temperature is less than the difference between the second set temperature and the first set value, increase the operating frequency of the compressor;
  • Step S620 When the average pipe temperature is greater than the sum of the second set temperature and the first set value, reduce the operating frequency of the compressor.
  • the second set temperature is the heating target temperature
  • the first set value is a correction value, which can make the current heating temperature within the heating target range. If the average pipe temperature is less than the second set temperature and The difference between the first set value means that the current heating temperature is not high enough.
  • Increase the operating frequency of the compressor that is, frequency increase correction. The operating frequency of the compressor is adjusted one gear at a time;
  • the operating frequency of the compressor is reduced, that is, frequency reduction correction.
  • the operating frequency of the compressor is adjusted every Adjust one gear at a time. If the average pipe temperature is greater than or equal to the difference between the second set temperature and the first set value and less than or equal to the sum of the second set temperature and the first set value, it means that the current heating temperature is within the heating target range. , there is no need to adjust the operating frequency of the compressor.
  • control method of the multi-split air conditioning system at least one of the plurality of indoor units is a standby indoor unit in a standby state.
  • the control method of the multi-split air conditioning system also includes the following steps:
  • the multi-split air conditioning system is controlled to enter the high temperature trip stop assistance mode to assist in reducing the power of the multi-split air conditioning system through the standby indoor unit or outdoor unit. pressure.
  • At least one of the plurality of indoor units is a standby indoor unit in a standby state.
  • the standby indoor unit has no capacity requirement and does not need to operate heating.
  • the multi-split air conditioning system will trigger high-voltage protection and shut down.
  • the second setting value is the correction value, which is used to trigger the high-temperature trip assistance mode before the high-voltage protection trip occurs in the multi-split air conditioning system.
  • the evaporator tube temperature of the running indoor unit is greater than the difference between the set shutdown temperature and the second set value, it means that the evaporator tube temperature is too high and the pressure of the multi-split air conditioning system is high, that is, the multi-split air conditioning system is at risk of high temperature tripping. , the evaporator tube temperature of the running indoor unit will soon reach the set shutdown temperature.
  • the multi-split air-conditioning system is controlled to enter the high-temperature trip-stop assistance mode, that is, through the standby indoor unit or outdoor unit to assist in reducing the temperature. Pressure in multi-split air conditioning systems.
  • the running indoor unit can seek assistance from the standby indoor unit or the outdoor unit.
  • the standby indoor unit can be used to control the fan to start or the outdoor unit can adjust the corresponding electronic expansion valve. Reduce high pressure.
  • the standby indoor unit and the running indoor unit communicate through the outdoor unit.
  • the communication methods include but are not limited to limited communication and wireless communication. If the evaporator tube temperature of the running indoor unit is greater than the set shutdown temperature and the second set value difference, the high temperature trip stop assist mode is triggered, the running indoor unit sends a high temperature trip stop assist signal to the outdoor unit, and the outdoor unit forwards the high temperature trip stop assist signal to all standby indoor units, so that the standby indoor unit performs the corresponding voltage reduction control measures.
  • the running indoor unit sends a high temperature protection signal to the outdoor unit. , controls the compressor to stop and controls the fan of the indoor unit to run for the fifth set time according to the second set windshield. In addition, after the fan running the indoor unit runs for the fifth set time, turn off the fan and then restart it or adjust the settings to clear the high temperature protection signal.
  • the above control method of the multi-split air conditioning system also includes but is not limited to step S710 and step S720:
  • Step S710 When the multi-split air conditioning system enters the high-temperature jump-stop assistance mode, determine the environmental state of the space where the standby internal unit is located, where the environmental state includes an occupied state and an unmanned state;
  • Step S720 If it is determined that the standby indoor unit is in an unoccupied state, control the fan of the standby indoor unit to operate with a third set windshield, where the third set windshield is the highest windshield among multiple set windshields.
  • the multi-split air conditioning system enters the high temperature jump stop assistance mode to determine the environmental state of the space where the standby indoor unit is located. If the standby indoor unit is in In the unmanned state, the fan of the standby internal unit can be controlled to run at the third windshield, that is, the fan of the standby internal unit can be controlled to run at the highest windshield, which can help reduce the pressure of the multi-split air conditioning system. Running the fan of the standby internal unit can avoid affecting the user during the operation of the fan.
  • the third set windshield may be equal to the first set windshield.
  • the fan will not be turned on even if the multi-split air conditioning system enters the high temperature jump-stop assist mode. It can be understood that if the standby indoor unit receives the high temperature trip stop assist signal forwarded by the outdoor unit and the standby indoor unit is in an occupied state, the fan will be turned off; if the standby internal unit is in an unmanned state and does not receive the high temperature trip stop assist signal, The fan is off.
  • human detection equipment such as infrared equipment or radar equipment can be installed in the space where all indoor units are located to detect whether there are people in the space where the indoor units are located.
  • the standby indoor unit receives the high-temperature jump-stop assist signal. If the human body detection equipment fails or there is no human body detection equipment in the space where the standby indoor unit is located, the detection signal cannot be obtained. If it is not possible to determine whether the space where the standby internal unit is located is occupied, it will be considered that the standby internal unit is in a occupied state, and the fan of the standby internal unit will not be triggered to start. This avoids affecting the user during the operation of the fan and is conducive to improving the versatility of the control logic. .
  • the outdoor unit is equipped with multiple electronic expansion valves corresponding to the indoor units.
  • the control of the multi-split air conditioning system The method also includes but is not limited to step S810:
  • Step S810 When all standby indoor units are in an occupied state, adjust the opening of the electronic expansion valve corresponding to the standby indoor unit according to the evaporator tube temperature of the operating indoor unit.
  • the multi-split air conditioning system enters the high-temperature trip-stop assistance mode. Since the fans are turned off when the standby indoor units are in the occupied state, if all the standby indoor units are in the occupied state and the fans are not turned on, the outdoor unit adjustment and standby The opening of the electronic expansion valve corresponding to the indoor unit thus helps reduce the pressure of the multi-split air conditioning system. Since the high-temperature jump-stop assist mode is triggered by the running indoor unit, it acquires the evaporator tube temperature of the running indoor unit and adjusts the temperature according to the operating temperature. The evaporator tube temperature of the internal unit adjusts the opening of the electronic expansion valve corresponding to the standby internal unit to ensure control accuracy.
  • the electronic expansion valve corresponding to the running indoor unit is controlled normally. If the standby indoor unit does not receive the high temperature trip stop assist signal and the multi-split air conditioning system does not enter the high temperature trip stop assist mode, the standby internal unit will maintain heating. Standby opening.
  • step S810 the opening of the electronic expansion valve corresponding to the standby indoor unit is adjusted according to the evaporator tube temperature of the operating indoor unit, including but not limited to step S910 and steps S920:
  • Step S910 When the evaporator tube temperature of the running internal unit is greater than the difference between the set shutdown temperature and the second set value, increase the opening of the electronic expansion valve corresponding to the standby internal unit;
  • Step S920 When the evaporator tube temperature of the running indoor unit is less than the difference between the set shutdown temperature and the second set value, reduce the opening of the electronic expansion valve corresponding to the standby indoor unit.
  • the evaporator tube temperature of the running indoor unit is greater than the difference between the set shutdown temperature and the second set value, it means that the evaporator tube temperature of the running indoor unit is too high and the pressure of the multi-split air conditioning system is high, then increase the temperature of the standby indoor unit.
  • the corresponding opening of the electronic expansion valve increases the refrigerant flow and accelerates the pressure reduction of the multi-split air conditioning system.
  • the evaporator tube temperature of the running indoor unit is less than the difference between the set shutdown temperature and the second set value, it means the running indoor unit
  • the evaporator tube temperature is low and the pressure of the multi-split air conditioning system is relatively low, which can reduce the opening of the electronic expansion valve corresponding to the standby internal unit, thereby reducing energy consumption.
  • the electronic expansion valve corresponding to the standby internal unit increases the first opening degree at intervals of the sixth set time; when the running indoor unit When the evaporator tube temperature is less than the difference between the set shutdown temperature and the second set value, the electronic expansion valve corresponding to the standby internal unit decreases the second opening degree at intervals of the sixth set time, and the minimum is reduced to the heating standby opening degree.
  • step S120 it is determined that the current startup state of the multi-split air conditioning system is a hot start based on the indoor ambient temperature and the evaporator tube temperatures of all operating indoor units.
  • Status including but not limited to step S1010 and step S1020:
  • Step S1010 Calculate the average tube temperature based on the evaporator tube temperatures of all running indoor units
  • Step S1020 When the difference between the average pipe temperature and the indoor ambient temperature is greater than the third set temperature, determine that the current startup state of the multi-split air conditioning system is the hot startup state;
  • the average tube temperature By calculating the average tube temperature based on the evaporator tube temperatures of all running indoor units, it can reflect the pressure temperature of the multi-split air conditioning system, and calculating the average value can improve the accuracy of control and reduce the possibility of misjudgment. If the tube temperature If the difference between the average value and the indoor ambient temperature is greater than the third set temperature, it means that the running indoor unit has run heating before starting, and there is residual heat in the standby indoor unit. It is determined that the current startup state of the multi-split air conditioning system is a hot startup state.
  • the control method of the multi-split air conditioning system also includes the following steps:
  • Step S1030 When the difference between the average pipe temperature and the indoor ambient temperature is less than or equal to the third set temperature, it is determined that the current starting state of the multi-split air conditioning system is a cold starting state.
  • the current startup state is a cold startup state.
  • the current starting state of the multi-split air conditioning system is determined to be the hot start state, and the multi-split air conditioning system is controlled to enter the thermal control mode;
  • the current starting state of the multi-split air conditioning system is determined to be a cold start state, and the multi-split air conditioning system is controlled to enter the cold control mode.
  • the average tube temperature is the evaporator tube temperature of the running indoor unit. If there are multiple running indoor units, the average tube temperature is the evaporator tube temperature of all running indoor units. average temperature.
  • control method of the multi-split air conditioning system before obtaining the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units in step S110, the control method of the multi-split air conditioning system
  • the method also includes but is not limited to steps S1110 to S1140:
  • Step S1110 Obtain the outdoor ambient temperature
  • Step S1120 When the outdoor ambient temperature is greater than the fourth set temperature, obtain the first capacity of all operating indoor units and the second capacity of the outdoor units;
  • Step S1130 Calculate the sum of the capacities of the operating internal machines based on the first capabilities of all operating internal machines;
  • Step S1140 Determine that the multi-split air conditioning system has a risk of high-temperature tripping based on the sum of the second capacity and the operating internal unit capacity.
  • the multi-split air-conditioning system since there are many combinations of indoor units, if the heat exchange area of the indoor unit and outdoor unit is very different, and the multi-split air-conditioning system operates the heating function in a high-temperature environment, it is easy to trigger the high-voltage protection. Shut down, by obtaining the outdoor ambient temperature. When the outdoor ambient temperature is greater than the fourth set temperature, it means that the multi-split air conditioning system uses the heating function in a high temperature environment, by obtaining the first capacity of all running indoor units and the second capacity of the outdoor unit.
  • Capacity and calculate the sum of the capacity of the operating internal units based on the first capacity of all operating internal units, and determine whether there is a risk of high temperature tripping in the multi-split air conditioning system by comparing the relationship between the second capacity and the sum of the capacities of the operating internal units.
  • step S1140 it is determined based on the sum of the second capacity capacity and the operating internal unit capacity that the multi-split air conditioning system has a risk of high temperature tripping, including:
  • the third setting value is a coefficient less than 1.
  • the multi-split air conditioning system has the risk of high-temperature trip and stop.
  • the sum of the operating internal unit capacities is greater than or equal to the product of the second capacity and the third set value, it can be determined that there is no risk of high temperature tripping in the multi-split air conditioning system, and the multi-split air conditioning system maintains normal heating. control mode.
  • the current starting state of the multi-split air conditioning system is a cold start state
  • the current starting state of the multi-split air conditioning system is a hot start state
  • the control method of the multi-split air conditioning system of the present invention is specifically as follows:
  • Ta is the fourth set temperature
  • the value of Ta is 20°C
  • the range can be 16 ⁇ 26°C.
  • An_in is the sum of the capacities of the operating internal machines. According to the capacity of all operating internal machines The first capacity is calculated; An_out is the second capacity of the outdoor unit; K is the third set value, and the value of K is 0.25, with a value ranging from 0.18 to 0.4;
  • T2_Avg-T1 Compare the sizes of T2_Avg-T1 and Tm; if T2_Avg-T1>Tm, go to step 6; if T2_Avg-T1 ⁇ Tm, go to step 7; where T2 is the evaporator tube temperature of the running indoor unit; T2_Avg is the temperature of all running The average value of T2 of the indoor unit; T1 is the indoor ambient temperature of the space where the indoor unit is running; Tm is the third set temperature, the value of Tm is 5°C, and the value range is 3 ⁇ 10°C;
  • the current startup state of the multi-split air conditioning system is the hot startup state and enters the thermal control mode
  • the current startup status of the multi-split air conditioning system is the cold startup status and enters the cold control mode.
  • control method of the multi-split air conditioning system of the present invention is specifically as follows:
  • the compressor runs at the second platform frequency Fa for the second set time ta; among them, Fa is about 1/3 of the maximum operating frequency, and the deviation range is ⁇ 10Hz;
  • T2_trg is the second set temperature, which can also be called is the heating target temperature, which generally takes a value of 47°C, ranging from 42 to 52°C;
  • T2 is the evaporator tube temperature of the running indoor unit;
  • T2_Avg is the average T2 of all running indoor units;
  • d is the first set value, The first setting value is used to make the heating target temperature meet the range of 42 ⁇ 52°C;
  • the standby indoor unit and outdoor unit receive the high-temperature trip stop assistance signal, and the outdoor unit determines that all standby indoor units are occupied, adjust the opening of the electronic expansion valve corresponding to the standby indoor unit:
  • T2>T2_OFF—c the interval tz time increases by P1; T2 ⁇ T2_OFF—c, the interval tz time decreases by P2, and the minimum decreases to P0; among them, T2 is the evaporator tube temperature of the running indoor unit; T2_OFF is the set shutdown temperature , generally 62°C; c is the second set value, the value of c is 6°C, the range is 4 ⁇ 8°C; P1 is the first opening, the value of P1 is 15P, the range is 10P ⁇ 20P; P2 is the second opening degree, the value of P2 is 10P, the range is 15P ⁇ 5P; tz is the sixth setting time, the value of tz is 40s, the range is 20 ⁇ 120s; P0 is the heating standby opening degree, the value of P0 is 50P, the range is 40 ⁇ 80P .
  • the electronic expansion valve corresponding to the running indoor unit is controlled normally; if the standby indoor unit does not receive the high temperature trip stop assist signal, the standby indoor unit maintains the heating standby opening P0.
  • T2>Tf exit the anti-cold wind mode, the fan running the indoor unit runs with the first windshield, and starts timing tk. It will be reset when the power is off or the temperature is reached; among them, T2 is the evaporator tube temperature of the running indoor unit; Tf It is the first set temperature, which can also be called the anti-cold wind temperature. Tf is generally 30°C, ranging from 28 to 32°C; the first set windshield is the highest windshield; tk is the first operating time;
  • the preset conditions include at least one of the following:
  • tk is the first running time
  • a is the third set time, the value of a is 3 minutes, ranging from 1 minute to 5 minutes;
  • T2_trg-b ⁇ T2 ⁇ T2_trg+b and continuously for tx time; when T2 satisfies T2_trg-b ⁇ T2 ⁇ T2_trg+b, it means it is within the preset temperature range; among them, T2_trg is the second set temperature, or it can It is called the heating target temperature; tx is the fourth set time, and the value of tx is 30s, ranging from 20 to 60s; b is the correction value;
  • T2>T2_OFF-c when the indoor unit is running, it sends a high-temperature trip stop assistance signal to the outdoor unit.
  • the fan operates according to the set windshield and is detected every tb time; where tb is 40s and ranges from 20 to 120s; T2_OFF is the setting Shutdown temperature, c is the second set value;
  • the indoor unit When the indoor unit is running, it sends a high temperature protection signal to the outdoor unit and the compressor stops;
  • the fan running the indoor unit is turned off after running for ty time according to the second set windshield, and then restarted or adjusted to clear the high temperature protection signal; among them, ty is the fifth set time, and the value of ty is 1 minute, with a range of 0.5 minutes to 2 minutes.
  • the specific operation steps are: determine the environmental status of the space where the standby internal unit is located, that is, determine whether there is someone; for the standby internal unit in the occupied state, the fan is turned off; for the standby internal unit in the unmanned state, identify whether there is an outdoor unit forwarding High-temperature trip-stop assist signal. If the high-temperature trip-stop assist signal is not received, the fan will be shut down. If a high-temperature trip-stop assist signal is received, the fan will run at the highest windshield; every tz time, it will be detected whether there is a high-temperature trip stop assist forwarded by the outdoor unit. Signal.
  • control method of the multi-split air conditioning system of the present invention is specifically as follows:
  • the compressor runs at the first platform frequency Fb for the first set time tb; where, Fb ⁇ Fa, approximately less than 5 to 15Hz; tb ⁇ ta, the value of tb is 10s, ranging from 10 to 30s;
  • T2_trg is the second set temperature, which can also be called is the heating target temperature, which generally takes a value of 47°C, ranging from 42 to 52°C;
  • T2 is the evaporator tube temperature of the running indoor unit;
  • T2_Avg is the average T2 of all running indoor units;
  • d is the first set value, The first setting value is used to make the heating target temperature meet the range of 42 ⁇ 52°C;
  • the standby indoor unit and outdoor unit receive the high-temperature trip stop assistance signal, and the outdoor unit determines that all standby indoor units are occupied, adjust the opening of the electronic expansion valve corresponding to the standby indoor unit:
  • T2>T2_OFF—c the interval tz time increases by P1; T2 ⁇ T2_OFF—c, the interval tz time decreases by P2, and the minimum decreases to P0; among them, T2 is the evaporator tube temperature of the running indoor unit; T2_OFF is the set shutdown temperature , generally 62°C; c is the second set value, the value of c is 6°C, the range is 4 ⁇ 8°C; P1 is the first opening, the value of P1 is 15P, the range is 10P ⁇ 20P; P2 is the second opening degree, the value of P2 is 10P, the range is 15P ⁇ 5P; tz is the sixth setting time, the value of tz is 40s, the range is 20 ⁇ 120s; P0 is the heating standby opening degree, the value of P0 is 50P, the range is 40 ⁇ 80P .
  • the electronic expansion valve corresponding to the running indoor unit is controlled normally; if the standby indoor unit does not receive the high temperature trip stop assist signal, the standby indoor unit maintains the heating standby opening P0.
  • the fan running the indoor unit runs with the first windshield setting, and starts timing tk. It will be reset when the power is cut off or the temperature is reached; among them, the running indoor unit does not enter the anti-cold wind mode when it is turned on, and the first setting windshield is the highest windshield; tk is first running time;
  • the preset conditions include at least one of the following:
  • tk is the first running time
  • a is the third set time, the value of a is 3 minutes, ranging from 1 minute to 5 minutes;
  • T2_trg-b ⁇ T2 ⁇ T2_trg+b and continuously for tx time; when T2 satisfies T2_trg-b ⁇ T2 ⁇ T2_trg+b, it means it is within the preset temperature range; among them, T2_trg is the second set temperature, or it can It is called the heating target temperature; tx is the fourth set time, and the value of tx is 30s, ranging from 20 to 60s; b is the correction value;
  • T2>T2_OFF-c when the indoor unit is running, it sends a high-temperature trip stop assistance signal to the outdoor unit.
  • the fan operates according to the set windshield and is detected every tb time; where tb is 40s and ranges from 20 to 120s; T2_OFF is the setting Shutdown temperature, c is the second set value;
  • the indoor unit When the indoor unit is running, it sends a high temperature protection signal to the outdoor unit and the compressor stops;
  • the fan running the indoor unit is turned off after running for ty time according to the second set windshield, and then restarted or adjusted to clear the high temperature protection signal; among them, ty is the fifth set time, and the value of ty is 1 minute, with a range of 0.5 minutes to 2 minutes.
  • the specific operation steps are: determine the environmental status of the space where the standby internal unit is located, that is, determine whether there is someone; for the standby internal unit in the occupied state, the fan is turned off; for the standby internal unit in the unmanned state, identify whether there is an outdoor unit forwarding High-temperature trip-stop assist signal. If the high-temperature trip-stop assist signal is not received, the fan will be shut down. If a high-temperature trip-stop assist signal is received, the fan will run at the highest windshield; every tz time, it will be detected whether there is a high-temperature trip stop assist forwarded by the outdoor unit. Signal.
  • a second embodiment of the present invention provides an operation control device 1700, including at least one control processor 1710 and a memory 1720 for communicative connection with the at least one control processor 1710; the control processor 1710 and The memory 1720 may be connected through a bus or other means.
  • An example of being connected through a bus is shown in Figure 17.
  • the memory 1720 stores instructions that can be executed by at least one control processor 1710.
  • the instructions are executed by at least one control processor 1710, so that at least A control processor 1710 is capable of executing the control method of the multi-split air conditioning system of the first embodiment as above, for example, executing the method steps in FIGS. 2 to 16 described above.
  • the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units are obtained, and the current value of the multi-split air conditioning system is determined based on the indoor ambient temperature and the evaporator tube temperatures of all running indoor units.
  • controlling the fan of the internal unit to run with the first windshield can speed up the heat dissipation of the operating internal unit, effectively reduce the problem of high-voltage tripping, and ensure Running the indoor unit can provide normal heating, which is conducive to improving the user's experience.
  • a third embodiment of the present invention provides a multi-connected air conditioning system, including the operation control device of the above second embodiment.
  • the multi-split air conditioning system of the embodiment of the present invention obtains the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units during the heating start-up phase, and uses the indoor ambient temperature and the evaporator tube temperatures of all running indoor units to The pipe temperature determines the current startup status of the multi-split air conditioning system.
  • controlling the fan of the internal unit to operate with the first windshield setting can speed up the heat dissipation of the internal unit. It effectively reduces the problem of high-voltage tripping and stops, ensuring that the indoor unit can be heated normally, which is conducive to improving the user's experience.
  • a fourth embodiment of the present invention provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer-executable instructions.
  • the computer-executable instructions can be used to cause a computer to execute the multi-connected air conditioning system of the first embodiment.
  • the control method for example, executes the method steps in Figures 2 to 16 described above.
  • the indoor ambient temperature of the space where the running indoor unit is located and the evaporator tube temperatures of all running indoor units are obtained, and the current value of the multi-split air conditioning system is determined based on the indoor ambient temperature and the evaporator tube temperatures of all running indoor units.
  • controlling the fan of the internal unit to run with the first windshield can speed up the heat dissipation of the operating internal unit, effectively reduce the problem of high-voltage tripping, and ensure Running the indoor unit can provide normal heating, which is conducive to improving the user's experience.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disk, DVD or other optical disk storage, magnetic cassettes, magnetic tape, disk storage or other magnetic storage devices, or may be used Any other medium that stores the desired information and can be accessed by a computer. Additionally, it is known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

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Abstract

本发明提出一种多联机空调系统的控制方法、装置、多联机空调系统和存储介质,其中所述控制方法包括:在制热启动阶段,获取所述运行内机所处空间的室内环境温度和所有所述运行内机的蒸发器管温(S110);当根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为热态启动状态,控制所述运行内机的风机以第一设定风挡运行,其中,所述第一设定风挡为多个设定风挡中的最高风挡(S120)。

Description

多联机空调系统的控制方法、控制装置和多联机空调系统
相关申请的交叉引用
本申请要求于2022年05月16日提交的申请号为202210529688.7、名称为“多联机空调系统的控制方法、控制装置和多联机空调系统”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及空调技术领域,尤其涉及一种多联机空调系统的控制方法、控制装置和多联机空调系统。
背景技术
多联机空调系统是指由一台室外机和多台室内机组成的冷媒循环系统,由于多联机空调系统存在不同的运行状态,当多联机空调系统启动制热功能时,如果启动前已运行过制热,室内机积累有热量,此时若再次启动制热功能,按照常规的制热控制模式,在初始启动时控制室内机启动防冷风功能,容易使得室内机散热不及时而造成高压跳停的问题。
发明内容
本发明旨在至少部分解决现有技术中存在的技术问题之一。为此,本发明提出一种多联机空调系统的控制方法、控制装置和多联机空调系统,能够有效减少高压跳停的问题。
第一方面,本发明实施例提供一种多联机空调系统的控制方法,所述多联机空调系统包括室外机和多个室内机,多个所述室内机中的至少一个为处于运行状态的运行内机,所述控制方法包括:在制热启动阶段,获取所述运行内机所处空间的室内环境温度和所有所述运行内机的蒸发器管温;当根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为热态启动状态,控制所述运行内机的风机以第一设定风挡运行,其中,所述第一设定风挡为多个设定风挡中的最高风挡。
根据本发明实施例提供的多联机空调系统的控制方法,至少具有如下有益效果:通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
在上述多联机空调系统的控制方法中,当确定所述多联机空调系统的当前启动状态为热态启动状态,所述控制方法还包括:控制所述室外机的压缩机以第一平台频率运行第一设定时间;在所述压缩机运行所述第一设定时间后,控制所述压缩机以设定频率运行,其中,所述第一平台频率大于所述设定频率。
通过在制热启动阶段通过控制室外机的压缩机以第一平台频率运行第一设定时间,确保四通阀可以正常换向,在压缩机运行第一设定时间后,再控制压缩机以较低的设定频率运行,保证多联机空调系统可以正常制热,避免压缩机快速升频,减少高频运行时间,能够有效减少高压跳停的问题。
在上述多联机空调系统的控制方法中,所述控制方法还包括:当根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为冷态启动状态,控制所述压缩机以第二平台频率运行第二设定时间,所述第二平台频率大于所述第一平台频率且所述第二设定时间大于所述第一设定时间;在所述压缩机运行所述第二设定时间后,控制所述压缩机以设定频率运行,其中,所述第二平台频率大于所述设定频率。
当根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态为冷态启动状态,通过控制室外机的压缩机以第二平台频率运行第二设定时间,确保四通阀可以正常换向,在压缩机运行第二设定时间后,再控制压缩机以较低的设定频率运行,保证多联机空调系统可以正常制热,避免压缩机快速升频,有效减少高压跳停的问题。
在上述多联机空调系统的控制方法中,当确定所述多联机空调系统的当前启动状态为冷态启动状态,所述控制方法还包括:控制所述运行内机的风机进入防冷风模式;当所述运行内机的蒸发器管温大于第一设定温度,退出所述防冷风模式,控制所述运行内机的风机以第一设定风挡运行,其中,所述第一设定风挡为多个设定风挡中的最高风挡。
在制热启动阶段,当确定多联机空调系统的当前启动状态为冷态启动状态,此时运行内机的蒸发器管温相对较低,通常与室内环境温度平衡,此时多联机空调系统处于稳定的压力范围内,可以先控制运 行内机的风机进入防冷风模式,避免出现开机初始阶段吹出冷风而影响用户使用舒适度的问题,当运行内机工作一段时间后,蒸发器管温会逐步上升,当运行内机的蒸发器管温大于第一设定温度,则退出防冷风模式,并控制运行内机的风机以第一设定风挡运行,即控制运行内机的风机以最高风挡运行,可以加快运行内机的散热,保证运行内机在制热过程中稳定工作,避免出现高压跳停的情况,保证良好的制热效果。
在上述多联机空调系统的控制方法中,所述控制方法还包括:当满足预设条件,控制所述风机的运行风挡从所述第一设定风挡切换至第二设定风挡;其中,所述预设条件包括以下至少之一:所述风机以所述第一设定风挡持续运行的时间大于第三设定时间;所述运行内机的蒸发器管温连续处于预设温度范围内的时间大于第四设定时间。
需要说明的是,第一设定风挡大于第二设定风挡,当运行内机的内机以第一设定风挡运行一段时间后,可以提升运行内机的制热能力,当满足预设条件后,可以控制风机的运行风挡降低至第二设定风挡。
在上述多联机空调系统的控制方法中,在控制所述压缩机以设定频率运行之后,所述控制方法还包括:根据所有所述运行内机的蒸发器管温计算出管温平均值;根据所述管温平均值调节所述压缩机的运行频率。
需要说明的是,通过控制压缩机以设定频率运行可以减少出现高压跳停的情况,然后再根据运行内机的蒸发器管温修正压缩机的运行频率,首先根据所有运行内机的蒸发器管温计算得到管温平均值,并根据管温平均值调节压缩机的运行频率,保证压缩机运行于正常的制热状态下,通过计算出管温平均值,可以提高控制的精确度。
在上述多联机空调系统的控制方法中,所述根据所述管温平均值调节所述压缩机的运行频率,包括:当所述管温平均值小于第二设定温度和第一设定值之差,增大所述压缩机的运行频率;当所述管温平均值大于第二设定温度和第一设定值之和,降低所述压缩机的运行频率。
需要说明的是,第二设定温度为制热目标温度,第一设定值为修正值,能够使得当前制热温度处于制热目标范围内,如果管温平均值小于第二设定温度和第一设定值之差,表示当前制热温度不够高,增大压缩机的运行频率,即升频修正,压缩机的运行频率每次调整一档;如果管温平均值大于第二设定温度和第一设定值之和,表示当前制热温度已经超出制热目标范围内,降低压缩机的运行频率,即降频修正,压缩机的运行频率每次调整一档。如果管温平均值大于或等于第二设定温度和第一设定值之差且小于或等于第二设定温度和第一设定值之和,表示当前制热温度处于制热目标范围内,则无需调整压缩机的运行频率。
在上述多联机空调系统的控制方法中,多个所述室内机中的至少一个为处于待机状态的待机内机,所述控制方法还包括:当所述运行内机的蒸发器管温大于设定停机温度与第二设定值之差,控制所述多联机空调系统进入高温跳停协助模式,以通过所述待机内机或所述室外机协助降低所述多联机空调系统的压力。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,表示蒸发器管温过高,多联机空调系统的压力较高,即多联机空调系统出现高温跳停风险,运行内机的蒸发器管温很快会达到设定停机温度,为了避免多联机空调系统高压跳停,控制多联机空调系统进入高温跳停协助模式,即通过待机内机或室外机协助降低多联机空调系统的压力。
在上述多联机空调系统的控制方法中,所述控制方法还包括:当所述多联机空调系统进入高温跳停协助模式,判断所述待机内机所处空间的环境状态,其中,所述环境状态包括有人状态和无人状态;若判定所述待机内机处于无人状态,控制所述待机内机的风机以第三设定风挡运行,其中,所述第三设定风挡为多个设定风挡中的最高风挡。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,多联机空调系统进入高温跳停协助模式,判断待机内机所处空间的环境状态,如果待机内机处于无人状态,可以控制待机内机的风机以第三设定风挡运行,即控制待机内机的风机运行于最高风挡,可以起到协助降低多联机空调系统压力的作用,通过在无人状态下运行待机内机的风机,可以避免风机运行过程中影响用户。
在上述多联机空调系统的控制方法中,所述室外机设置有多个与所述室内机对应的电子膨胀阀,当多联机空调系统进入高温跳停协助模式,所述控制方法还包括:在所有所述待机内机均处于有人状态的情况下,根据所述运行内机的蒸发器管温调节所述待机内机对应的电子膨胀阀的开度。
需要说明的是,多联机空调系统进入高温跳停协助模式,由于待机内机处于有人状态时风机关闭,如果所有待机内机均处于有人状态,在不开风机的情况下,室外机调节与待机内机对应的电子膨胀阀的开度,从而起到协助降低多联机空调系统压力的作用,由于高温跳停协助模式由运行内机触发,通过获取运行内机的蒸发器管温,并根据运行内机的蒸发器管温调节待机内机对应的电子膨胀阀的开度,保证控制的精准度。
在上述多联机空调系统的控制方法中,所述根据所述运行内机的蒸发器管温调节所述待机内机对应的电子膨胀阀的开度,包括:当所述运行内机的蒸发器管温大于设定停机温度与第二设定值之差,增大所述待机内机对应的电子膨胀阀的开度;当所述运行内机的蒸发器管温小于设定停机温度与第二设定值之差,减少所述待机内机对应的电子膨胀阀的开度。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,表示运行内机的蒸发器管温过高,多联机空调系统的压力较高,则增大待机内机对应的电子膨胀阀的开度,增大冷媒流量,加快降低多联机空调系统的压力,如果运行内机的蒸发器管温小于设定停机温度与第二设定值之差,表示运行内机的蒸发器管温较低,多联机空调系统的压力相对较低,则可以减少待机内机对应的电子膨胀阀的开度,从而降低能耗。
在上述多联机空调系统的控制方法中,所述根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为热态启动状态,包括:根据所有所述运行内机的蒸发器管温计算出管温平均值;当所述管温平均值和所述室内环境温度的差值大于第三设定温度,确定所述多联机空调系统的当前启动状态为热态启动状态;
所述控制方法还包括:当所述管温平均值和所述室内环境温度的差值小于或等于第三设定温度,确定所述多联机空调系统的当前启动状态为冷态启动状态。
通过根据所有运行内机的蒸发器管温计算出管温平均值,能够反映多联机空调系统的压力温度,且计算出平均值可以提高控制的精确度,降低误判的可能性,如果管温平均值和室内环境温度的差值大于第三设定温度,表示运行内机在启动之前已运行过制热,待机内机存在余热,确定多联机空调系统的当前启动状态为热态启动状态。如果管温平均值和室内环境温度的差值小于或等于第三设定温度,表示运行内机在启动之前没有运行过制热,多联机空调系统的压力相对较低,确定多联机空调系统的当前启动状态为冷态启动状态。
在上述多联机空调系统的控制方法中,在获取所述运行内机所处空间的室内环境温度和所有所述运行内机的蒸发器管温之前,所述控制方法还包括:获取室外环境温度;当所述室外环境温度大于第四设定温度,获取所有所述运行内机的第一能力容量和所述室外机的第二能力容量;根据所有所述运行内机的第一能力容量计算出运行内机容量之和;根据所述第二能力容量和所述运行内机容量之和确定所述多联机空调系统存在高温跳停风险。
当室外环境温度大于第四设定温度,表示多联机空调系统在高温环境下使用制热功能,通过获取所有运行内机的第一能力容量和室外机的第二能力容量,并根据所有运行内机的第一能力容量计算出运行内机容量之和,通过比较第二能力容量和运行内机容量之和的关系确定多联机空调系统是否存在高温跳停风险,当确定多联机空调系统存在高温跳停风险,获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并执行相应的控制措施,以减少高压跳停的问题。
在上述多联机空调系统的控制方法中,所述根据所述第二能力容量和所述运行内机容量之和确定所述多联机空调系统存在高温跳停风险,包括:当所述运行内机容量之和小于所述第二能力容量和第三设定值的乘积,确定所述多联机空调系统存在高温跳停风险。
需要说明的是,如果运行内机容量之和小于第二能力容量和第三设定值的乘积,表示运行内机启动的数量过少,此时室内机和室外机换热面积相差较大,容易因室内机散热不及时造成高压跳停,可以确定多联机空调系统存在高温跳停风险。
第二方面,本发明实施例提供一种运行控制装置,包括至少一个控制处理器和用于与所述至少一个控制处理器通信连接的存储器;所述存储器存储有可被所述至少一个控制处理器执行的指令,所述指令被所述至少一个控制处理器执行,以使所述至少一个控制处理器能够执行如上第一方面实施例所述的多联机空调系统的控制方法。
根据本发明实施例提供的运行控制装置,至少具有如下有益效果:通过在制热启动阶段获取运行内 机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
第三方面,本发明实施例提供一种多联机空调系统,包括有如上第二方面实施例所述的运行控制装置。
根据本发明实施例提供的多联机空调系统,至少具有如下有益效果:通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
第四方面,本发明实施例提供一种计算机可读存储介质,所述计算机可读存储介质存储有计算机可执行指令,所述计算机可执行指令用于使计算机执行如上第一方面实施例所述的多联机空调系统的控制方法。
根据本发明实施例提供的计算机可读存储介质,至少具有如下有益效果:通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显而易见,或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
下面结合附图和实施例对本发明进一步地说明;
图1是本发明实施例一提供的多联机空调系统的结构示意图。
图2是本发明实施例二提供的多联机空调系统的控制方法的流程图;
图3是本发明实施例三提供的多联机空调系统的控制方法的流程图;
图4是本发明实施例四提供的多联机空调系统的控制方法的流程图;
图5是本发明实施例五提供的多联机空调系统的控制方法的流程图;
图6是本发明实施例六提供的多联机空调系统的控制方法的流程图;
图7是本发明实施例七提供的多联机空调系统的控制方法的流程图;
图8是本发明实施例八提供的多联机空调系统的控制方法的流程图;
图9是本发明实施例九提供的多联机空调系统的控制方法的流程图;
图10是本发明实施例十提供的多联机空调系统的控制方法的流程图;
图11是本发明实施例十一提供的多联机空调系统的控制方法的流程图;
图12是本发明实施例十二提供的多联机空调系统的控制方法的流程图;
图13是本发明实施例十三提供的多联机空调系统的控制方法的流程图;
图14是本发明实施例十四提供的多联机空调系统的控制方法的流程图;
图15是本发明实施例十五提供的处于冷态控制模式的多联机空调系统的控制方法的流程图;
图16是本发明实施例十六提供的处于热态控制模式的多联机空调系统的控制方法的流程图;以及
图17是本发明实施例十七提供的运行控制装置的结构示意图。
具体实施方式
本部分将详细描述本发明的具体实施例,本发明之较佳实施例在附图中示出,附图的作用在于用图形补充说明书文字部分的描述,使人能够直观地、形象地理解本发明的每个技术特征和整体技术方案,但其不能理解为对本发明保护范围的限制。
应了解,在本发明实施例的描述中,如果有描述到“第一”、“第二”等只是用于区分技术特征为目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示 的技术特征的先后关系。“至少一个”是指一个或者多个,“多个”是指两个以上,大于、小于、超过等理解为不包括本数,以上、以下、以内等理解为包括本数,“若干”的含义是一个或者多个,除非另有明确具体的限定。
此外,除非另有明确的规定和限定,术语“连接/相连”应做广义理解,例如,可以是固定连接或活动连接,也可以是可拆卸连接或不可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接或可以相互通讯;可以是直接相连,也可以通过中间媒介间接相连。需要说明的是,虽然在流程图中示出了逻辑顺序,但是在某些情况下,可以以不同于流程图中的顺序执行所示出或描述的步骤。
需要说明的是,下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
本发明实施例提供的多联机空调系统的控制方法、控制装置和多联机空调系统,能够有效减少高压跳停的问题。
下面结合附图,对本发明实施例作进一步阐述。
如图1所示,图1示出了多联机空调系统的结构示意图,多联机空调系统包括室外机100和多个室内机200,室内机200包括蒸发器210和设置于蒸发器210处的风机220,室外机100包括冷凝器110、压缩机120、四通阀130和多个电子膨胀阀140,每个电子膨胀阀140分别连接至对应的蒸发器210,电子膨胀阀140用于调节冷媒流量,压缩机120与四通阀130连接,四通阀130分别与冷凝器110和各个室内机200的蒸发器210连接,四通阀130用于进行冷媒循环的换向,从而实现制冷运行模式和制热运行模式之间的切换。
本领域技术人员可以理解的是,图1中示出的多联机空调系统并不构成对本发明实施例的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
如图2所示,基于上述图1的多联机空调系统,多个室内机中的至少一个为处于运行状态的运行内机,运行内机也可以称为有能力需求内机,能力需求是指室内机的设定温度和室内环境温度存在差值,需要室外机工作提供负荷,从而使得室内环境温度满足用户需求或者功能需求。本发明的第一方面的实施例提供一种多联机空调系统的控制方法,包括但不限于步骤S110和步骤S120:
步骤S110:在制热启动阶段,获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温。
需要说明的是,由于多联机空调系统存在不同的运行状态,当多联机空调系统启动制热功能时,运行内机开始运作,通过获取所有运行内机的蒸发器管温,能够反映多联机空调系统的压力温度,如果运行内机在启动之前已运行过制热,运行内机内会积累有热量,蒸发器管温相对会较高,从而使得蒸发器管温与运行内机所处空间的室内环境温度处在一定差异。
步骤S120:当根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,其中,第一设定风挡为多个设定风挡中的最高风挡。
可以理解的是,根据任意一个运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温可以确定多联机空调系统的当前启动状态,若多联机空调系统的当前启动状态为热态启动状态,则表示多联机空调系统在本次制热启动之前已运行过制热,造成的原因可能是多联机空调系统刚结束制热模式不久又重新开机,或者多联机空调系统因故障保护跳停又重新开机。室内机在制热启动阶段时通常会启动防冷风功能,防冷风功能即控制室内机的风机暂缓开启或开启微风状态,当确定多联机空调系统的当前启动状态为热态启动状态,若此时再次启动制热功能,由于运行内机积累的热量相对较多,无法及时散热,容易使得多联机空调系统的压力快速升高,从而出现高压跳停的情况。由于第一设定风挡为多个设定风挡中的最高风挡,通过控制运行内机的风机以第一设定风挡运行,即控制运行内机的风机以最高风挡运行,通过在开机初始直接运行高风,能够加快散热,提高运行内机运行的可靠性。
上述第一方面实施例提供的多联机空调系统的控制方法,通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
如图3所示,在上述多联机空调系统的控制方法中,当确定多联机空调系统的当前启动状态为热态 启动状态,多联机空调系统的控制方法还包括但不限于步骤S210和步骤S220:
步骤S210:控制室外机的压缩机以第一平台频率运行第一设定时间;
步骤S220:在压缩机运行第一设定时间后,控制压缩机以设定频率运行,其中,第一平台频率大于设定频率。
当多联机空调系统在高温环境下使用制热功能,尤其在只启动较少数量的运行内机时,为了防止压缩机长时间高频运行造成高压保护跳停的情况,通常采取直接运行目标低频率的措施,但这样会使得多联机空调系统吸排气压差小,低于四通阀换向推动力,四通阀无法完成换向而窜气,导致多联机空调系统无法正常制热。当确定多联机空调系统的当前启动状态为热态启动状态,本发明实施例通过在制热启动阶段控制室外机的压缩机以第一平台频率运行第一设定时间,确保四通阀可以正常换向,在压缩机运行第一设定时间后,再控制压缩机以较低的设定频率运行,保证多联机空调系统可以正常制热,避免压缩机快速升频,减少高频运行时间,能够有效减少高压跳停的问题。
需要说明的是,设定频率为制热最低频率,第一平台频率通常为一个相对较高的频率,第一设定时间通常为一个较短的设定时间,可以理解的是,在制热启动阶段控制压缩机运行于第一启动平台,即控制压缩机以第一平台频率运行第一设定时间,在保证四通阀可以换向的前提下,通过控制压缩机运行较短时间高频使得多联机空调系统有高低压差,再立即以设定频率运行,在保障多联机空调系统正常运行制热功能的前提下减少出现高压跳停的情况。
如图4所示,在上述多联机空调系统的控制方法中,还包括但不限于步骤S310和步骤S320:
步骤S310:当根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态为冷态启动状态,控制压缩机以第二平台频率运行第二设定时间,第二平台频率大于第一平台频率且第二设定时间大于第一设定时间;
步骤S320:在压缩机运行第二设定时间后,控制压缩机以设定频率运行,其中,第二平台频率大于设定频率。
当根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态为冷态启动状态,通过控制室外机的压缩机以第二平台频率运行第二设定时间,确保四通阀可以正常换向,在压缩机运行第二设定时间后,再控制压缩机以较低的设定频率运行,保证多联机空调系统可以正常制热,避免压缩机快速升频,有效减少高压跳停的问题。
需要说明的是,设定频率为制热最低频率,第二平台频率通常为一个相对较高的频率,第二设定时间通常为一个较短的设定时间,可以理解的是,在制热启动阶段控制压缩机运行于第二启动平台,即控制压缩机以第二平台频率运行第二设定时间,在保障多联机空调系统正常运行制热功能的前提下减少出现高压跳停的情况。
可以理解的是,多联机空调系统的当前启动状态包括热态启动状态和冷态启动状态,对于两种不同的当前启动状态,在制热启动阶段,对压缩机采取不同的控制措施:当确定多联机空调系统的当前启动状态为热态启动状态,室外机的压缩机以第一平台频率运行第一设定时间,在压缩机运行第一设定时间后,控制压缩机以设定频率运行;当确定多联机空调系统的当前启动状态为冷态启动状态,控制压缩机以第二平台频率运行第二设定时间,在压缩机运行第二设定时间后,控制压缩机以设定频率运行;由于多联机空调系统的当前启动状态为热态启动状态时压力相对较高,在设置时可以适当降低第一平台频率以及第一设定时间,令第二平台频率大于第一平台频率且第二设定时间大于第一设定时间,保证多联机空调系统工作的稳定性。
如图5所示,在上述多联机空调系统的控制方法中,当确定多联机空调系统的当前启动状态为冷态启动状态,多联机空调系统的控制方法还包括但不限于步骤S410和步骤S420:
步骤S410:控制运行内机的风机进入防冷风模式;
步骤S420:当运行内机的蒸发器管温大于第一设定温度,退出防冷风模式,控制运行内机的风机以第一设定风挡运行,其中,第一设定风挡为多个设定风挡中的最高风挡。
在制热启动阶段,当确定多联机空调系统的当前启动状态为冷态启动状态,此时运行内机的蒸发器管温相对较低,通常与室内环境温度平衡,此时多联机空调系统处于稳定的压力范围内,可以先控制运行内机的风机进入防冷风模式,避免出现开机初始阶段吹出冷风而影响用户使用舒适度的问题,当运行内机工作一段时间后,蒸发器管温会逐步上升,当运行内机的蒸发器管温大于第一设定温度,则退出防 冷风模式,并控制运行内机的风机以第一设定风挡运行,即控制运行内机的风机以最高风挡运行,可以加快运行内机的散热,保证运行内机在制热过程中稳定工作,避免出现高压跳停的情况,保证良好的制热效果。
需要说明的是,控制运行内机的风机进入防冷风模式可以是在运行内机运行一段时间后再启动风机,或者控制风机开启微风状态。第一设定温度为防冷风温度,若运行内机的蒸发器管温小于或等于第一设定温度,表示运行内机的内部温度相对较低,此时如果开启风机或风机以高风档运行,风机吹出的冷风容易让用户感觉不适;若运行内机的蒸发器管温大于第一设定温度,风机吹出的风不会让用户感觉不适,此时可以退出防冷风模式,控制运行内机的风机以第一设定风挡运行,保证运行内机工作的可靠性,同时可以提高运行内机的制热效果。
在上述多联机空调系统的控制方法中,还包括以下步骤:
当满足预设条件,控制风机的运行风挡从第一设定风挡切换至第二设定风挡;
其中,预设条件包括以下至少之一:
风机以第一设定风挡持续运行的时间大于第三设定时间;
运行内机的蒸发器管温连续处于预设温度范围内的时间大于第四设定时间。
需要说明的是,第一设定风挡大于第二设定风挡,当运行内机的内机以第一设定风挡运行一段时间后,可以提升运行内机的制热能力,当满足预设条件后,可以控制风机的运行风挡降低至第二设定风挡。第一设定风挡为最高风挡,第二设定风挡通常为用户设定的低风挡或中风挡。
当风机以第一设定风挡运行时,开始计时并记录为第一运行时间,第一运行时间为风机以第一设定风挡持续运行的时间,当第一运行时间大于第三设定时间,将风机的运行风挡从第一设定风挡切换至第二设定风挡;运行内机在制热过程中,蒸发器管温逐渐升高并满足于预设温度范围内,当运行内机的蒸发器管温处于预设温度范围内,开始计时并记录为第二运行时间,第二运行时间为运行内机的蒸发器管温连续处于预设温度范围内的时间,当第二运行时间大于第四设定时间,表示运行内机的蒸发器管温已稳定达到制热目标范围内,则此时可以将风机的运行风挡从第一设定风挡切换至第二设定风挡,有利于降低能耗。
需要说明的是,当第一运行时间在计时过程中出现断电情况或者蒸发器管温达到制热目标温度,则将第一运行时间清零。
可以理解的是,多联机空调系统的当前启动状态包括热态启动状态和冷态启动状态,对于两种不同的当前启动状态,在制热启动阶段,对运行内机采取不同的控制措施:当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行;当确定多联机空调系统的当前启动状态为冷态启动状态,先控制运行内机的风机进入防冷风模式,在运行内机的蒸发器管温大于第一设定温度的情况下,再控制运行内机的风机以第一设定风挡运行,通过根据多联机空调系统不同的当前启动状态控制运行内机的风机,保证多联机空调系统工作的稳定性。
如图6所示,在上述多联机空调系统的控制方法中,在控制压缩机以设定频率运行之后,多联机空调系统的控制方法还包括但不限于步骤S510和步骤S520:
步骤S510:根据所有运行内机的蒸发器管温计算出管温平均值;
步骤S520:根据管温平均值调节压缩机的运行频率。
需要说明的是,通过控制压缩机以设定频率运行可以减少出现高压跳停的情况,然后再根据运行内机的蒸发器管温修正压缩机的运行频率,首先根据所有运行内机的蒸发器管温计算得到管温平均值,并根据管温平均值调节压缩机的运行频率,保证压缩机运行于正常的制热状态下,通过计算出管温平均值,可以提高控制的精确度。
如图7所示,在上述多联机空调系统的控制方法中,步骤S520中根据管温平均值调节压缩机的运行频率,包括但不限于步骤S610和步骤S620:
步骤S610:当管温平均值小于第二设定温度和第一设定值之差,增大压缩机的运行频率;
步骤S620:当管温平均值大于第二设定温度和第一设定值之和,降低压缩机的运行频率。
需要说明的是,第二设定温度为制热目标温度,第一设定值为修正值,能够使得当前制热温度处于制热目标范围内,如果管温平均值小于第二设定温度和第一设定值之差,表示当前制热温度不够高,增大压缩机的运行频率,即升频修正,压缩机的运行频率每次调整一档;
如果管温平均值大于第二设定温度和第一设定值之和,表示当前制热温度已经超出制热目标范围,降低压缩机的运行频率,即降频修正,压缩机的运行频率每次调整一档。如果管温平均值大于或等于第二设定温度和第一设定值之差且小于或等于第二设定温度和第一设定值之和,表示当前制热温度处于制热目标范围内,则无需调整压缩机的运行频率。
在上述多联机空调系统的控制方法中,多个室内机中的至少一个为处于待机状态的待机内机,多联机空调系统的控制方法还包括以下步骤:
当运行内机的蒸发器管温大于设定停机温度与第二设定值之差,控制多联机空调系统进入高温跳停协助模式,以通过待机内机或室外机协助降低多联机空调系统的压力。
需要说明的是,多个室内机中的至少一个为处于待机状态的待机内机,待机内机没有能力需求,无需运行制热。当运行内机的蒸发器管温大于设定停机温度,多联机空调系统会触发高压保护而停机。第二设定值为修正值,用于在多联机空调系统发生高压保护跳停之前触发高温跳停协助模式。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,表示蒸发器管温过高,多联机空调系统的压力较高,即多联机空调系统出现高温跳停风险,运行内机的蒸发器管温很快会达到设定停机温度,为了避免多联机空调系统高压跳停,控制多联机空调系统进入高温跳停协助模式,即通过待机内机或室外机协助降低多联机空调系统的压力。
可以理解的是,当多联机空调系统出现高温跳停风险,运行内机可以向待机内机或室外机寻求协助,例如可以通过待机内机控制风机开启或者通过室外机调节相应的电子膨胀阀以降低高压。
需要说明的是,待机内机和运行内机通过室外机进行通信,通信方式包括但不限于有限通信和无线通信,如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,则触发高温跳停协助模式,运行内机发送高温跳停协助信号至室外机,室外机将高温跳停协助信号转发至所有的待机内机,以使得待机内机执行相应的降压控制措施。
在上述多联机空调系统的控制方法中,当运行内机的蒸发器管温大于设定停机温度,控制压缩机停机,以及控制待机内机的风机按照第二设定风挡运行第五设定时间。
需要说明的是,如果运行内机的蒸发器管温大于设定停机温度,此时多联机空调系统压力过高,为了保护多联机空调系统中的设备,运行内机发送高温保护信号至室外机,控制压缩机停机以及控制运行内机的风机按照第二设定风挡运行第五设定时间。此外,在运行内机的风机运行第五设定时间后关闭风机,再重新启动或者调整设置以清除高温保护信号。
如图8所示,在上述多联机空调系统的控制方法中,还包括但不限于步骤S710和步骤S720:
步骤S710:当多联机空调系统进入高温跳停协助模式,判断待机内机所处空间的环境状态,其中,环境状态包括有人状态和无人状态;
步骤S720:若判定待机内机处于无人状态,控制待机内机的风机以第三设定风挡运行,其中,第三设定风挡为多个设定风挡中的最高风挡。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,多联机空调系统进入高温跳停协助模式,判断待机内机所处空间的环境状态,如果待机内机处于无人状态,可以控制待机内机的风机以第三设定风挡运行,即控制待机内机的风机运行于最高风挡,可以起到协助降低多联机空调系统压力的作用,通过在无人状态下运行待机内机的风机,可以避免风机运行过程中影响用户。
需要说明的是,第三设定风挡可以与第一设定风挡相等。
如果待机内机处于有人状态,即使多联机空调系统进入高温跳停协助模式,也不开启风机。可以理解的是,如果待机内机接收到室外机转发的高温跳停协助信号且待机内机处于有人状态,风机关闭;如果待机内机处于无人状态,且没有接收到高温跳停协助信号,风机关闭。
需要说明的是,可以通过在所有室内机所处空间设置红外设备或雷达设备等人体探测设备检测室内机所处空间是否有人。当多联机空调系统进入高温跳停协助模式,也即待机内机接收到高温跳停协助信号,如果人体探测设备失效或待机内机所处空间没有设置人体探测设备,即无法获取检测信号,此时无法确定该待机内机所处空间是否有人,则认为该待机内机处于有人状态,不会触发该待机内机的风机启动,避免风机运行过程中影响用户,有利于提高控制逻辑的通用性。
如图9所示,在上述多联机空调系统的控制方法中,室外机设置有多个与室内机对应的电子膨胀阀,当多联机空调系统进入高温跳停协助模式,多联机空调系统的控制方法还包括但不限于步骤S810:
步骤S810:在所有待机内机均处于有人状态的情况下,根据运行内机的蒸发器管温调节待机内机对应的电子膨胀阀的开度。
需要说明的是,多联机空调系统进入高温跳停协助模式,由于待机内机处于有人状态时风机关闭,如果所有待机内机均处于有人状态,在不开风机的情况下,室外机调节与待机内机对应的电子膨胀阀的开度,从而起到协助降低多联机空调系统压力的作用,由于高温跳停协助模式由运行内机触发,通过获取运行内机的蒸发器管温,并根据运行内机的蒸发器管温调节待机内机对应的电子膨胀阀的开度,保证控制的精准度。
还需说明的是,运行内机对应的电子膨胀阀按照正常控制,如果待机内机没有接收到高温跳停协助信号,多联机空调系统没有进入高温跳停协助模式,则待机内机维持制热待机开度。
如图10所示,在上述多联机空调系统的控制方法中,步骤S810中根据运行内机的蒸发器管温调节待机内机对应的电子膨胀阀的开度,包括但不限于步骤S910和步骤S920:
步骤S910:当运行内机的蒸发器管温大于设定停机温度与第二设定值之差,增大待机内机对应的电子膨胀阀的开度;
步骤S920:当运行内机的蒸发器管温小于设定停机温度与第二设定值之差,减少待机内机对应的电子膨胀阀的开度。
如果运行内机的蒸发器管温大于设定停机温度与第二设定值之差,表示运行内机的蒸发器管温过高,多联机空调系统的压力较高,则增大待机内机对应的电子膨胀阀的开度,增大冷媒流量,加快降低多联机空调系统的压力,如果运行内机的蒸发器管温小于设定停机温度与第二设定值之差,表示运行内机的蒸发器管温较低,多联机空调系统的压力相对较低,则可以减少待机内机对应的电子膨胀阀的开度,从而降低能耗。
具体地,当运行内机的蒸发器管温大于设定停机温度与第二设定值之差,待机内机对应的电子膨胀阀间隔第六设定时间增加第一开度;当运行内机的蒸发器管温小于设定停机温度与第二设定值之差,待机内机对应的电子膨胀阀间隔第六设定时间减少第二开度,最低减少至制热待机开度。
如图11和图12所示,在上述多联机空调系统的控制方法中,步骤S120中根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态为热态启动状态,包括但不限于步骤S1010和步骤S1020:
步骤S1010:根据所有运行内机的蒸发器管温计算出管温平均值;
步骤S1020:当管温平均值和室内环境温度的差值大于第三设定温度,确定多联机空调系统的当前启动状态为热态启动状态;
通过根据所有运行内机的蒸发器管温计算出管温平均值,能够反映多联机空调系统的压力温度,且计算出平均值可以提高控制的精确度,降低误判的可能性,如果管温平均值和室内环境温度的差值大于第三设定温度,表示运行内机在启动之前已运行过制热,待机内机存在余热,确定多联机空调系统的当前启动状态为热态启动状态。
多联机空调系统的控制方法还包括以下步骤:
步骤S1030:当管温平均值和室内环境温度的差值小于或等于第三设定温度,确定多联机空调系统的当前启动状态为冷态启动状态。
如果管温平均值和室内环境温度的差值小于或等于第三设定温度,表示运行内机在启动之前没有运行过制热,多联机空调系统的压力相对较低,确定多联机空调系统的当前启动状态为冷态启动状态。
可以理解的是,当管温平均值和室内环境温度的差值大于第三设定温度,确定多联机空调系统的当前启动状态为热态启动状态,控制多联机空调系统进入热态控制模式;当管温平均值和室内环境温度的差值小于或等于第三设定温度,确定多联机空调系统的当前启动状态为冷态启动状态,控制多联机空调系统进入冷态控制模式。
需要说明的是,若运行内机只有一个,则管温平均值为该运行内机的蒸发器管温,如果运行内机有多个,则管温平均值为所有运行内机的蒸发器管温的平均值。
如图13所示,在上述多联机空调系统的控制方法中,在步骤S110中获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温之前,多联机空调系统的控制方法还包括但不限于步骤S1110至步骤S1140:
步骤S1110:获取室外环境温度;
步骤S1120:当室外环境温度大于第四设定温度,获取所有运行内机的第一能力容量和室外机的第二能力容量;
步骤S1130:根据所有运行内机的第一能力容量计算出运行内机容量之和;
步骤S1140:根据第二能力容量和运行内机容量之和确定多联机空调系统存在高温跳停风险。
对于多联机空调系统而言,由于室内机的组合搭配非常多,若室内机与室外机的换热面积相差较大,且多联机空调系统在高温环境下运行制热功能,容易触发高压保护而停机,通过获取室外环境温度,当室外环境温度大于第四设定温度,表示多联机空调系统在高温环境下使用制热功能,通过获取所有运行内机的第一能力容量和室外机的第二能力容量,并根据所有运行内机的第一能力容量计算出运行内机容量之和,通过比较第二能力容量和运行内机容量之和的关系确定多联机空调系统是否存在高温跳停风险,当确定多联机空调系统存在高温跳停风险,获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并执行相应的控制措施,以减少高压跳停的问题。
在上述多联机空调系统的控制方法中,步骤S1140中根据第二能力容量和运行内机容量之和确定多联机空调系统存在高温跳停风险,包括:
当运行内机容量之和小于第二能力容量和第三设定值的乘积,确定多联机空调系统存在高温跳停风险。其中,第三设定值为小于1的系数。
需要说明的是,如果运行内机容量之和小于第二能力容量和第三设定值的乘积,表示运行内机启动的数量过少,此时室内机和室外机换热面积相差较大,容易因室内机散热不及时造成高压跳停,可以确定多联机空调系统存在高温跳停风险。
需要说明的是,如果运行内机容量之和大于或等于第二能力容量和第三设定值的乘积,可以确定多联机空调系统不存在高温跳停风险,多联机空调系统保持正常的制热控制模式。
为了更清楚阐述本发明的多联机空调系统的控制方法,以下将分别用多联机空调系统的当前启动状态为冷态启动状态、多联机空调系统的当前启动状态为热态启动状态两种情况作进一步介绍。
如图14所示,首先确定多联机空调系统的当前启动状态,本发明的多联机空调系统的控制方法具体如下:
1、制热开机,获取室外环境温度T4;
2、当T4>Ta,进入高温制热控制;其中,Ta为第四设定温度,Ta取值为20℃,范围可以是16~26℃。
3、比较An_in和K*An_out的大小;如果An_in<K*An_out,执行步骤4;如果An_in≥K*An_out,执行步骤5;其中,An_in为运行内机容量之和,根据所有运行内机的第一能力容量计算得到;An_out为室外机的第二能力容量;K为第三设定值,K取值为0.25,取值范围0.18~0.4;
4、比较T2_Avg-T1和Tm的大小;如果T2_Avg-T1>Tm,执行步骤6;如果T2_Avg-T1≤Tm,执行步骤7;其中,T2为运行内机的蒸发器管温;T2_Avg为所有运行内机的T2的平均值;T1为运行内机所处空间的室内环境温度;Tm为第三设定温度,Tm取值为5℃,取值范围3~10℃;
5、进入正常制热模式;
6、多联机空调系统的当前启动状态为热态启动状态,进入热态控制模式;
7、多联机空调系统的当前启动状态为冷态启动状态,进入冷态控制模式。
如图15所示,当多联机空调系统的当前启动状态为冷态启动状态,进入冷态控制模式,本发明的多联机空调系统的控制方法具体如下:
(1)室外机部分-压缩机
1.1、压缩机以第二平台频率Fa运行第二设定时间ta;其中,Fa约为1/3的最大运行频率,偏差范围±10Hz;
1.2、压缩机运行ta后,转为运行设定频率F-lim;其中,F-lim为制热最低频率;
1.3、判断T2_Avg是否满足T2_trg-d≤T2_Avg≤T2_trg+d;若满足,无需调频;若不满足,执行步骤1.4,每隔tb时间判断一次;其中,T2_trg为第二设定温度,也可以称为制热目标温度,一般取值为47℃,范围42~52℃;T2为运行内机的蒸发器管温;T2_Avg为所有运行内机的T2的平均值;d为第一设定值,第一设定值用于使得制热目标温度满足42~52℃之间;
1.4、当T2_Avg<T2_trg-d,升频修正;当T2_Avg>T2_trg+d,降频修正;压缩机的运行频率每次 调整一档,升频修正时调档频次最多为e档,降频修正时调档频次不限。
(2)室外机部分-电子膨胀阀
具体地,若待机内机和室外机接收到高温跳停协助信号,且室外机确定所有待机内机均为有人状态,调节待机内机对应的电子膨胀阀的开度:
2.1、调节待机内机对应的电子膨胀阀的开度;
2.2、T2>T2_OFF—c,间隔tz时间增加P1;T2<T2_OFF—c,间隔tz时间减少P2,最低减少至P0;其中,T2为运行内机的蒸发器管温;T2_OFF为设定停机温度,一般为62℃;c为第二设定值,c取值为6℃,范围4~8℃;P1为第一开度,P1取值为15P,范围10P~20P;P2为第二开度,P2取值为10P,范围15P~5P;tz为第六设定时间,tz取值为40s,范围20~120s;P0为制热待机开度,P0取值为50P,范围40~80P。
此外,运行内机对应的电子膨胀阀按照正常控制;若待机内机没有接收到高温跳停协助信号,待机内机维持制热待机开度P0。
(3)运行内机
对于风机:
3.1、进入防冷风模式;风机不启动、启动微风状态等;
3.2、T2>Tf,退出防冷风模式,运行内机的风机以第一设定风挡运行,并开始计时tk,断电或者达温则清零;其中,T2为运行内机的蒸发器管温;Tf为第一设定温度,也可以称为防冷风温度,Tf一般是30℃,范围28~32℃;第一设定风挡为最高风挡;tk为第一运行时间;
3.3、满足预设条件,退出第一设定风挡,切换至第二设定风挡;
预设条件包括以下至少之一:
i、tk>a;其中,tk为第一运行时间;a为第三设定时间,a取值为3分钟,范围1分钟~5分钟;
ii、T2_trg-b≤T2<T2_trg+b,且连续tx时间;当T2满足T2_trg-b≤T2<T2_trg+b,表示处于预设温度范围内;其中,T2_trg为第二设定温度,也可以称为制热目标温度;tx为第四设定时间,tx取值为30s,范围20~60s;b为修正值;
3.4、T2>T2_OFF—c,运行内机发送高温跳停协助信号至室外机,风机按照设定风挡运行,每隔tb时间检测一次;其中,tb为40s,范围20~120s;T2_OFF为设定停机温度,c为第二设定值;
3.5、T2>T2_OFF时:
i、运行内机发送高温保护信号至室外机,压缩机停机;
ii、运行内机的风机按照第二设定风挡运行ty时间后关闭,再重新启动或者调整设置以清除高温保护信号;其中,ty为第五设定时间,ty取值为1分钟,范围0.5分钟~2分钟。
(4)待机内机-风机
具体运行步骤为:判断待机内机所处空间的环境状态,即判断是否有人;对于处于有人状态的待机内机,风机关闭;对于处于无人状态的待机内机,识别是否有室外机转发的高温跳停协助信号,若没有收到高温跳停协助信号,风机关闭,若收到高温跳停协助信号,风机以最高风挡运行;每隔tz时间检测一次是否有室外机转发的高温跳停协助信号。
如图16所示,当多联机空调系统的当前启动状态为热态启动状态,进入热态控制模式,本发明的多联机空调系统的控制方法具体如下:
(1)室外机部分-压缩机
1.1、压缩机以第一平台频率Fb运行第一设定时间tb;其中,Fb<Fa,约小于5~15Hz;tb<ta,tb取值为10s,范围10~30s;
1.2、压缩机运行tb后,转为运行设定频率F-lim;其中,F-lim为制热最低频率;
1.3、判断T2_Avg是否满足T2_trg-d≤T2_Avg≤T2_trg+d;若满足,无需调频;若不满足,执行步骤1.4,每隔tb时间判断一次;其中,T2_trg为第二设定温度,也可以称为制热目标温度,一般取值为47℃,范围42~52℃;T2为运行内机的蒸发器管温;T2_Avg为所有运行内机的T2的平均值;d为第一设定值,第一设定值用于使得制热目标温度满足42~52℃之间;
1.4、当T2_Avg<T2_trg-d,升频修正;当T2_Avg>T2_trg+d,降频修正;压缩机的运行频率每次调整一档,升频修正时调档频次最多为e档,降频修正时调档频次不限。
(2)室外机部分-电子膨胀阀
具体地,若待机内机和室外机接收到高温跳停协助信号,且室外机确定所有待机内机均为有人状态,调节待机内机对应的电子膨胀阀的开度:
2.1、调节待机内机对应的电子膨胀阀的开度;
2.2、T2>T2_OFF—c,间隔tz时间增加P1;T2<T2_OFF—c,间隔tz时间减少P2,最低减少至P0;其中,T2为运行内机的蒸发器管温;T2_OFF为设定停机温度,一般为62℃;c为第二设定值,c取值为6℃,范围4~8℃;P1为第一开度,P1取值为15P,范围10P~20P;P2为第二开度,P2取值为10P,范围15P~5P;tz为第六设定时间,tz取值为40s,范围20~120s;P0为制热待机开度,P0取值为50P,范围40~80P。
此外,运行内机对应的电子膨胀阀按照正常控制;若待机内机没有接收到高温跳停协助信号,待机内机维持制热待机开度P0。
(5)运行内机
对于风机:
3.1、运行内机的风机以第一设定风挡运行,并开始计时tk,断电或者达温则清零;其中,运行内机开机不进入防冷风模式,第一设定风挡为最高风挡;tk为第一运行时间;
3.2、满足预设条件,退出第一设定风挡,切换至第二设定风挡;
预设条件包括以下至少之一:
i、tk>a;其中,tk为第一运行时间;a为第三设定时间,a取值为3分钟,范围1分钟~5分钟;
ii、T2_trg-b≤T2<T2_trg+b,且连续tx时间;当T2满足T2_trg-b≤T2<T2_trg+b,表示处于预设温度范围内;其中,T2_trg为第二设定温度,也可以称为制热目标温度;tx为第四设定时间,tx取值为30s,范围20~60s;b为修正值;
3.4、T2>T2_OFF—c,运行内机发送高温跳停协助信号至室外机,风机按照设定风挡运行,每隔tb时间检测一次;其中,tb为40s,范围20~120s;T2_OFF为设定停机温度,c为第二设定值;
3.5、T2>T2_OFF时:
i、运行内机发送高温保护信号至室外机,压缩机停机;
ii、运行内机的风机按照第二设定风挡运行ty时间后关闭,再重新启动或者调整设置以清除高温保护信号;其中,ty为第五设定时间,ty取值为1分钟,范围0.5分钟~2分钟。
(6)待机内机-风机
具体运行步骤为:判断待机内机所处空间的环境状态,即判断是否有人;对于处于有人状态的待机内机,风机关闭;对于处于无人状态的待机内机,识别是否有室外机转发的高温跳停协助信号,若没有收到高温跳停协助信号,风机关闭,若收到高温跳停协助信号,风机以最高风挡运行;每隔tz时间检测一次是否有室外机转发的高温跳停协助信号。
如图17所示,本发明的第二方面实施例提供一种运行控制装置1700,包括至少一个控制处理器1710和用于与至少一个控制处理器1710通信连接的存储器1720;控制处理器1710和存储器1720可以通过总线或者其他方式连接,图17中示出通过总线连接的例子,存储器1720存储有可被至少一个控制处理器1710执行的指令,指令被至少一个控制处理器1710执行,以使至少一个控制处理器1710能够执行如上第一方面实施例的多联机空调系统的控制方法,例如,执行以上描述的图2至图16中的方法步骤。通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
本发明的第三方面实施例提供一种多联机空调系统,包括有如上第二方面实施例的运行控制装置。本发明实施例的多联机空调系统通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
本发明的第四方面实施例提供一种计算机可读存储介质,计算机可读存储介质存储有计算机可执行指令,计算机可执行指令可以用于使计算机执行如上第一方面实施例的多联机空调系统的控制方法,例如,执行以上描述的图2至图16中的方法步骤。通过在制热启动阶段获取运行内机所处空间的室内环境温度和所有运行内机的蒸发器管温,并根据室内环境温度和所有运行内机的蒸发器管温确定多联机空调系统的当前启动状态,当确定多联机空调系统的当前启动状态为热态启动状态,控制运行内机的风机以第一设定风挡运行,能够加快运行内机的散热,有效减少高压跳停的问题,保证运行内机可以正常制热,有利于提高用户的使用体验感。
本领域普通技术人员可以理解,上文中所公开方法中的全部或某些步骤、系统可以被实施为软件、固件、硬件及其适当的组合。某些物理组件或所有物理组件可以被实施为由处理器,如中央处理器、数字信号处理器或微处理器执行的软件,或者被实施为硬件,或者被实施为集成电路,如专用集成电路。这样的软件可以分布在计算机可读介质上,计算机可读介质可以包括计算机存储介质或非暂时性介质和通信介质或暂时性介质。如本领域普通技术人员公知的,术语计算机存储介质包括在用于存储信息诸如计算机可读指令、数据结构、程序模块或其他数据的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘DVD或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外,本领域普通技术人员公知的是,通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据,并且可包括任何信息递送介质。
上面结合附图对本发明实施例作了详细说明,但是本发明不限于上述实施例,在技术领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (17)

  1. 一种多联机空调系统的控制方法,其中,所述多联机空调系统包括室外机和多个室内机,多个所述室内机中的至少一个为处于运行状态的运行内机,所述控制方法包括:
    在制热启动阶段,获取所述运行内机所处空间的室内环境温度和所有所述运行内机的蒸发器管温;以及
    当根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为热态启动状态,控制所述运行内机的风机以第一设定风挡运行,其中,所述第一设定风挡为多个设定风挡中的最高风挡。
  2. 根据权利要求1所述的控制方法,还包括:
    当确定所述多联机空调系统的当前启动状态为热态启动状态,控制所述室外机的压缩机以第一平台频率运行第一设定时间;以及
    在所述压缩机运行所述第一设定时间后,控制所述压缩机以设定频率运行,其中,所述第一平台频率大于所述设定频率。
  3. 根据权利要求2所述的控制方法,还包括:
    当根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为冷态启动状态,控制所述压缩机以第二平台频率运行第二设定时间,所述第二平台频率大于所述第一平台频率且所述第二设定时间大于所述第一设定时间;以及
    在所述压缩机运行所述第二设定时间后,控制所述压缩机以设定频率运行,其中,所述第二平台频率大于所述设定频率。
  4. 根据权利要求1所述的控制方法,还包括:
    当确定所述多联机空调系统的当前启动状态为冷态启动状态,控制所述运行内机的风机进入防冷风模式;以及
    当所述运行内机的蒸发器管温大于第一设定温度,退出所述防冷风模式,控制所述运行内机的风机以第一设定风挡运行,其中,所述第一设定风挡为多个设定风挡中的最高风挡。
  5. 根据权利要求1或4所述的控制方法,还包括:
    当满足预设条件,控制所述风机的运行风挡从所述第一设定风挡切换至第二设定风挡;
    其中,所述预设条件包括以下至少之一:
    所述风机以所述第一设定风挡持续运行的时间大于第三设定时间;
    所述运行内机的蒸发器管温连续处于预设温度范围内的时间大于第四设定时间。
  6. 根据权利要求2或3所述的控制方法,在控制所述压缩机以设定频率运行之后,还包括:
    根据所有所述运行内机的蒸发器管温计算出管温平均值;以及
    根据所述管温平均值调节所述压缩机的运行频率。
  7. [根据细则91更正 17.04.2023]
    根据权利要求6所述的控制方法,其中,所述根据所述管温平均值调节所述压缩机的运行频率,包括:
    当所述管温平均值小于第二设定温度和第一设定值之差,增大所述压缩机的运行频率;以及
    当所述管温平均值大于第二设定温度和第一设定值之和,降低所述压缩机的运行频率。
  8. [根据细则91更正 17.04.2023]
    根据权利要求1所述的控制方法,还包括:
    多个所述室内机中的至少一个为处于待机状态的待机内机,当所述运行内机的蒸发器管温大于设定停机温度与第二设定值之差,控制所述多联机空调系统进入高温跳停协助模式,以通过所述待机内机或所述室外机协助降低所述多联机空调系统的压力。
  9. 根据权利要求8所述的控制方法,还包括:
    当所述多联机空调系统进入高温跳停协助模式,判断所述待机内机所处空间的环境状态,其中,所述环境状态包括有人状态和无人状态;以及
    若判定所述待机内机处于无人状态,控制所述待机内机的风机以第三设定风挡运行,其中,所述第三设定风挡为多个设定风挡中的最高风挡。
  10. 根据权利要求9所述的控制方法,其中,所述室外机设置有多个与所述室内机对应的电子膨胀阀,当多联机空调系统进入高温跳停协助模式,所述控制方法还包括:
    在所有所述待机内机均处于有人状态的情况下,根据所述运行内机的蒸发器管温调节所述待机内机对应的电子膨胀阀的开度。
  11. 根据权利要求10所述的控制方法,其中,所述根据所述运行内机的蒸发器管温调节所述待机内机对应的电子膨胀阀的开度,包括:
    当所述运行内机的蒸发器管温大于设定停机温度与第二设定值之差,增大所述待机内机对应的电子膨胀阀的开度;以及
    当所述运行内机的蒸发器管温小于设定停机温度与第二设定值之差,减少所述待机内机对应的电子膨胀阀的开度。
  12. 根据权利要求1所述的控制方法,其中,所述根据所述室内环境温度和所有所述运行内机的蒸发器管温确定所述多联机空调系统的当前启动状态为热态启动状态,包括:
    根据所有所述运行内机的蒸发器管温计算出管温平均值;以及
    当所述管温平均值和所述室内环境温度的差值大于第三设定温度,确定所述多联机空调系统的当前启动状态为热态启动状态;以及
    所述控制方法还包括:
    当所述管温平均值和所述室内环境温度的差值小于或等于第三设定温度,确定所述多联机空调系统的当前启动状态为冷态启动状态。
  13. 根据权利要求1所述的控制方法,在获取所述运行内机所处空间的室内环境温度和所有所述运行内机的蒸发器管温之前,还包括:
    获取室外环境温度;
    当所述室外环境温度大于第四设定温度,获取所有所述运行内机的第一能力容量和所述室外机的第二能力容量;
    根据所有所述运行内机的第一能力容量计算出运行内机容量之和;以及
    根据所述第二能力容量和所述运行内机容量之和确定所述多联机空调系统存在高温跳停风险。
  14. 根据权利要求13所述的控制方法,其中,所述根据所述第二能力容量和所述运行内机容量之和确定所述多联机空调系统存在高温跳停风险,包括:
    当所述运行内机容量之和小于所述第二能力容量和第三设定值的乘积,确定所述多联机空调系统存在高温跳停风险。
  15. 一种运行控制装置,包括至少一个控制处理器和用于与所述至少一个控制处理器通信连接的存储器,其中,所述存储器存储有可被所述至少一个控制处理器执行的指令,所述指令被所述至少一个控制处理器执行,以使所述至少一个控制处理器能够执行如权利要求1至14任一项所述的控制方法。
  16. 一种多联机空调系统,包括权利要求15所述的运行控制装置。
  17. 一种计算机可读存储介质,存储有计算机可执行指令,其中,所述计算机可执行指令用于使计算机执行如权利要求1至14任一项所述的控制方法。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025138992A1 (zh) * 2023-12-25 2025-07-03 格力电器(南京)有限公司 中央空调的控制方法、装置、中央空调以及存储介质

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115046289B (zh) * 2022-05-16 2024-07-09 广东美的制冷设备有限公司 多联机空调系统的控制方法、控制装置和多联机空调系统
CN116147172B (zh) * 2022-12-15 2025-09-23 珠海格力电器股份有限公司 一种运行控制方法、装置和空调系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851337A (zh) * 2005-04-22 2006-10-25 海尔集团公司 家用多联空调低温制热外机频率的控制方法
CN103388856A (zh) * 2013-07-18 2013-11-13 广东美的暖通设备有限公司 多联机空调系统及其快速启动制热方法
CN105371437A (zh) * 2015-12-01 2016-03-02 青岛海尔空调器有限总公司 一种空调控制方法
CN105987429A (zh) * 2015-02-05 2016-10-05 佛山市禾才科技服务有限公司 一种多联机空调系统及其制热待机快速启动控制方法
CN106813360A (zh) * 2017-01-17 2017-06-09 广东美的暖通设备有限公司 多联机系统及其室内机的防冷风控制方法和装置
CN107300243A (zh) * 2017-07-10 2017-10-27 广东美的暖通设备有限公司 空调系统、风档调节方法及计算机可读存储介质
CN107860103A (zh) * 2017-10-27 2018-03-30 广东美的暖通设备有限公司 多联机系统的控制方法、装置及具有其的系统
CN109827308A (zh) * 2018-12-17 2019-05-31 珠海格力电器股份有限公司 一种多联机系统控制方法、装置及多联机系统
CN110553346A (zh) * 2019-09-18 2019-12-10 广东美的暖通设备有限公司 控制方法、控制装置、多联机系统及可读存储介质
CN115046289A (zh) * 2022-05-16 2022-09-13 广东美的制冷设备有限公司 多联机空调系统的控制方法、控制装置和多联机空调系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100561064C (zh) * 2004-01-20 2009-11-18 海尔集团公司 多联式空调系统的制热过冷度调节方法
CN104713202B (zh) * 2015-04-09 2018-02-23 宁波奥克斯电气股份有限公司 判断空调制热到温后的风机控制方法
CN105042771B (zh) * 2015-07-02 2017-12-26 珠海格力电器股份有限公司 空调制热开机防冷风控制方法及控制装置
CN106568170B (zh) * 2016-10-28 2018-10-19 珠海格力电器股份有限公司 空调及其制热防冷风装置和方法
CN107289682A (zh) * 2017-07-10 2017-10-24 珠海格力电器股份有限公司 空调器启动控制方法、控制系统、启动装置及空调器
CN110173854B (zh) * 2019-05-29 2023-08-22 青岛海尔空调电子有限公司 一种空调器低温制热启动控制方法和空调器
CN111043708A (zh) * 2019-12-31 2020-04-21 宁波奥克斯电气股份有限公司 空调控制方法、装置、空调器及计算机可读存储介质
CN113531856A (zh) * 2020-04-22 2021-10-22 青岛海尔空调电子有限公司 多联空调系统及多联空调系统的冷媒流量控制方法
CN111637609B (zh) * 2020-06-03 2021-07-06 珠海格力电器股份有限公司 空调制热控制方法、空调及计算机可读存储介质
CN113959075B (zh) * 2021-10-15 2022-11-18 珠海格力电器股份有限公司 一种空调器的控制方法及空调器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1851337A (zh) * 2005-04-22 2006-10-25 海尔集团公司 家用多联空调低温制热外机频率的控制方法
CN103388856A (zh) * 2013-07-18 2013-11-13 广东美的暖通设备有限公司 多联机空调系统及其快速启动制热方法
CN105987429A (zh) * 2015-02-05 2016-10-05 佛山市禾才科技服务有限公司 一种多联机空调系统及其制热待机快速启动控制方法
CN105371437A (zh) * 2015-12-01 2016-03-02 青岛海尔空调器有限总公司 一种空调控制方法
CN106813360A (zh) * 2017-01-17 2017-06-09 广东美的暖通设备有限公司 多联机系统及其室内机的防冷风控制方法和装置
CN107300243A (zh) * 2017-07-10 2017-10-27 广东美的暖通设备有限公司 空调系统、风档调节方法及计算机可读存储介质
CN107860103A (zh) * 2017-10-27 2018-03-30 广东美的暖通设备有限公司 多联机系统的控制方法、装置及具有其的系统
CN109827308A (zh) * 2018-12-17 2019-05-31 珠海格力电器股份有限公司 一种多联机系统控制方法、装置及多联机系统
CN110553346A (zh) * 2019-09-18 2019-12-10 广东美的暖通设备有限公司 控制方法、控制装置、多联机系统及可读存储介质
CN115046289A (zh) * 2022-05-16 2022-09-13 广东美的制冷设备有限公司 多联机空调系统的控制方法、控制装置和多联机空调系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4517205A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025138992A1 (zh) * 2023-12-25 2025-07-03 格力电器(南京)有限公司 中央空调的控制方法、装置、中央空调以及存储介质

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