WO2022247797A1 - 冷媒泄露检测方法、装置、空调器及存储介质 - Google Patents

冷媒泄露检测方法、装置、空调器及存储介质 Download PDF

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Publication number
WO2022247797A1
WO2022247797A1 PCT/CN2022/094504 CN2022094504W WO2022247797A1 WO 2022247797 A1 WO2022247797 A1 WO 2022247797A1 CN 2022094504 W CN2022094504 W CN 2022094504W WO 2022247797 A1 WO2022247797 A1 WO 2022247797A1
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WO
WIPO (PCT)
Prior art keywords
air conditioner
exhaust
refrigerant leakage
temperature
exhaust temperature
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/CN2022/094504
Other languages
English (en)
French (fr)
Inventor
肖久旻
黄延聪
肖阳
梁汇峰
邵艳坡
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.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
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 Midea Group Co Ltd, GD Midea Air Conditioning Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to EP22810522.7A priority Critical patent/EP4339525B1/en
Publication of WO2022247797A1 publication Critical patent/WO2022247797A1/zh
Priority to US18/517,768 priority patent/US20240085043A1/en
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
    • F24F11/30—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
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • 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
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/56—Remote control
    • F24F11/58—Remote control using Internet communication
    • 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
    • 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
    • F24F11/70—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
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of 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
    • 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
    • F24F11/30—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
    • F24F11/49—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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • 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
    • F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
    • F25B2500/222—Detecting refrigerant leaks
    • 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
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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
    • F25B2600/00—Control issues
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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
    • F25B2600/11—Fan speed control
    • F25B2600/112—Fan speed control of evaporator fans
    • 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
    • F25B2600/25—Control of valves
    • F25B2600/2513—Expansion valves
    • 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
    • F25B2700/15—Power, e.g. by voltage or current
    • F25B2700/151—Power, e.g. by voltage or current of the compressor motor
    • 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
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • 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 application relates to the technical field of air conditioners, in particular to a method and device for detecting refrigerant leakage, an air conditioner and a storage medium.
  • refrigerant leakage detection of air conditioners two types are generally used for refrigerant leakage detection of air conditioners.
  • One is to add a certain component to the refrigerant or refrigerant to detect the concentration of this component to determine whether the refrigerant is leaking.
  • the parameters are detected after a certain period of operation to determine whether there is refrigerant leakage.
  • This application provides a refrigerant leakage detection method, device, air conditioner and storage medium, aiming at solving the problem that the operating parameters of the current air conditioner will fluctuate with various frequency limit values triggered after refrigerant leakage, thereby affecting the accuracy of refrigerant leakage detection technical issues.
  • the present application provides a refrigerant leakage detection method, the method comprising:
  • the step of determining the exhaust temperature extreme value of the air conditioner according to the exhaust temperature at each moment includes:
  • An extreme exhaust temperature of the air conditioner is determined according to the exhaust air difference.
  • the step of determining whether there is refrigerant leakage in the air conditioner based on the exhaust cycle further includes:
  • the step of determining that the air conditioner has secondary refrigerant leakage it further includes:
  • the step of reducing the operating frequency of the compressor of the air conditioner and increasing the opening degree of the outdoor electronic expansion valve of the air conditioner it further includes:
  • the compressor of the air conditioner is controlled to stop, and a refrigerant leakage prompt message is output.
  • the step of obtaining the target operating exhaust parameters of the air conditioner it further includes:
  • the operating frequency of the compressor of the air conditioner is reduced, and the opening degree of the outdoor electronic expansion valve of the air conditioner is increased.
  • the step of determining that the air conditioner has primary refrigerant leakage it further includes:
  • the compressor of the air conditioner is controlled to stop, and a refrigerant leakage prompt message is output.
  • the preset The step of the exhaust gas temperature at each moment in the time period also includes:
  • the target operation exhaust parameter of the air conditioner exceeds the range of the preset refrigerant leakage exhaust parameter, the exhaust temperature of the air conditioner at each moment within the preset time period is acquired.
  • a refrigerant leakage detection device which includes:
  • the first acquisition module is configured to acquire the air conditioner at a preset temperature when the exhaust gas temperature of the air conditioner is greater than the preset exhaust temperature, and the target operating exhaust parameter of the air conditioner exceeds the preset refrigerant leakage exhaust parameter range. Set the exhaust gas temperature at each moment in the time period;
  • the first determination module is used to determine the extreme value of the exhaust temperature of the air conditioner and the exhaust time corresponding to the extreme value of the exhaust temperature according to the exhaust temperature at each moment;
  • a second acquisition module configured to acquire the exhaust cycle of the air conditioner according to the exhaust timing
  • the second determination module is configured to determine whether there is refrigerant leakage in the air conditioner based on the exhaust cycle.
  • the present application also provides an air conditioner, the air conditioner includes a processor, a memory, and a refrigerant leakage detection program stored in the memory, and the refrigerant leakage detection program is run by the processor , implement the steps of the method for detecting refrigerant leakage as described above.
  • the present application also provides a computer storage medium, on which a refrigerant leakage detection program is stored, and when the refrigerant leakage detection program is run by a processor, the above-mentioned refrigerant leakage detection method can be realized. step.
  • the present application provides a method for detecting refrigerant leakage, by detecting that the exhaust temperature of the air conditioner is greater than the preset exhaust temperature, and the target operating exhaust parameter of the air conditioner exceeds the preset refrigerant leakage exhaust parameter range, obtain the exhaust temperature of the air conditioner at each moment within the preset time period; determine the extreme value of the exhaust temperature of the air conditioner and the exhaust temperature corresponding to the extreme value of the exhaust temperature according to the exhaust temperature at each moment.
  • Fig. 1 is a schematic diagram of the hardware structure of the air conditioner involved in various embodiments of the present application
  • Fig. 2 is a schematic flow chart of the first embodiment of the refrigerant leakage detection method of the present application
  • Fig. 3 is another schematic flowchart of the first embodiment of the refrigerant leakage detection method of the present application.
  • Fig. 4 is a schematic flow chart of the second embodiment of the refrigerant leakage detection method of the present application.
  • Fig. 5 is a schematic flow chart of the third embodiment of the refrigerant leakage detection method of the present application.
  • Fig. 6 is a schematic diagram of functional modules of an embodiment of the refrigerant leakage detection device of the present application.
  • FIG. 1 is a schematic diagram of the hardware structure of the air conditioner involved in various embodiments of the present application.
  • the air conditioner may include a processor 1001 (such as a central processing unit central processing unit, CPU), communication bus 1002, input port 1003, output port 1004, memory 1005.
  • the communication bus 1002 is used to realize the connection and communication between these components; the input port 1003 is used for data input; the output port 1004 is used for data output, and the memory 1005 can be a high-speed RAM memory or a stable memory, such as a disk memory Alternatively, the memory 1005 may also be a storage device independent of the foregoing processor 1001 .
  • the hardware structure shown in FIG. 1 does not limit the present application, and may include more or less components than shown in the figure, or combine some components, or arrange different components.
  • the memory 1005 as a readable storage medium in FIG. 1 may include an operating system, a network communication module, an application program module, and a refrigerant leakage detection program.
  • the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server;
  • the user interface 1003 is mainly used to connect to the client (client) and perform data communication with the client;
  • the processor 1001 may be used to call the refrigerant leakage detection program stored in the memory 1005 .
  • the refrigerant leakage detection device includes: a memory 1005, a processor 1001, and a refrigerant leakage detection program stored in the memory 1005 and operable on the processor 1001, wherein the processor 1001 calls the memory 1005 When the refrigerant leak detection program stored in , and do the following:
  • FIG. 2 is a schematic flowchart of the first embodiment of the refrigerant leakage detection method of the present application.
  • the embodiment of the present application provides an embodiment of the refrigerant leakage detection method. It should be noted that although the logic sequence is shown in the flow chart, in some cases, the sequence shown or described steps.
  • the method for detecting refrigerant leakage in this embodiment includes:
  • Step S10 When the exhaust temperature of the air conditioner is greater than the preset exhaust temperature, and the target operating exhaust parameter of the air conditioner exceeds the preset range of refrigerant leakage exhaust parameters, obtain the air conditioner's operating time within the preset time period. Exhaust temperature at each moment;
  • the above-mentioned preset exhaust temperature in this embodiment refers to the temperature used to measure whether the exhaust temperature is abnormal when performing exhaust detection, wherein the preset exhaust temperature can be a specific exhaust temperature preset by the user.
  • Air temperature threshold when it is detected that the current exhaust temperature exceeds a specific exhaust temperature threshold preset by the user, it indicates that the exhaust temperature of the air conditioner exceeds the exhaust temperature of the air conditioner during normal operation, and it is determined that the air conditioner needs to perform Refrigerant leakage protection, such as automatically activating the refrigerant leakage protection module for refrigerant leakage protection.
  • the exhaust temperature threshold can be flexibly set for the air conditioner according to the current operating parameters, thereby improving the accuracy of exhaust detection.
  • the operating parameters may be any parameters that can affect the exhaust temperature, such as compression ratio, refrigerant flow rate, and electronic expansion valve opening, which are not limited in this embodiment.
  • the operating state of the air conditioner is adjusted.
  • the air conditioner is first controlled to shut down the air conditioner, and then control the air conditioner to start running after detecting that the exhaust temperature of the air conditioner is within the normal exhaust temperature range, thereby controlling the restart of the air conditioner to avoid damage to the air conditioner compressor, and to prevent damage to the air conditioner While starting the operation, control the outdoor and indoor fans of the air conditioner to run at the highest speed, thereby completing the adjustment of the operating state of the air conditioner.
  • the target operating exhaust parameters when the air conditioner is running in the adjusted operating state are obtained, so as to avoid the unstable operation of the air conditioner in the early stage of restarting the operation of the air conditioner.
  • fluctuations in operating parameters such as exhaust temperature and inaccurate detection results are caused.
  • the exhaust temperature of the air conditioner and the environment in which the air conditioner is located are driven by adjusting the operating state of the air conditioner.
  • the air conditioner has refrigerant leakage. In this way, the misjudgment rate of refrigerant leakage can be reduced.
  • the exhaust temperature of the air conditioner at each moment within the preset time period is obtained, so as to obtain the exhaust temperature of the air conditioner at each moment
  • the exhaust temperature determines the level of refrigerant leakage, thereby improving the accuracy of refrigerant leakage contact.
  • the above-mentioned target operating exhaust parameters refer to the exhaust temperature of the compressor and the operating current of the air conditioner.
  • the air conditioner it is detected whether the air conditioner is The refrigerant leakage detection function needs to be triggered.
  • the air conditioner when it is detected that the exhaust temperature is greater than the exhaust temperature threshold and the operating current is less than the operating current threshold, that is, when the preset refrigerant leakage exhaust parameter range is exceeded, If it indicates that the air conditioner is operating abnormally, it is determined that there is refrigerant leakage in the air conditioner, that is, the air conditioner needs to trigger the refrigerant leakage detection function; otherwise, it indicates that the air conditioner is operating normally, and it is determined that the air conditioner does not need to trigger the refrigerant leakage detection function.
  • the preset refrigerant leakage detection process is executed, that is, the exhaust gas temperature at each moment within the preset time period is obtained first, so as to complete the preset refrigerant leakage through the exhaust temperature at each moment detection process.
  • the method of timing acquisition when acquiring the exhaust gas temperature at each moment, the method of timing acquisition is adopted, wherein the timing can be started after detecting that the above parameters exceed the preset refrigerant leakage exhaust parameter range, and can also be detected after the exhaust gas temperature is detected. After the temperature is higher than the preset discharge temperature, start timing. For example, after detecting that the discharge temperature is higher than the preset discharge temperature, the discharge temperature of the compressor and the operating current of the air conditioner are detected every 1s.
  • the refrigerant leakage detection function After the temperature is greater than the exhaust temperature threshold and the operating current is less than the operating current threshold, the refrigerant leakage detection function will be triggered, and continue to obtain the current exhaust temperature of the air conditioner, and continue to accumulate time, for example, the i-th second, and then sequentially obtain the (i The exhaust gas temperature at +1) second, (i+2) second, and so on, wherein, the time interval of timing acquisition may be any time, which is not limited in this embodiment.
  • Step S20 Determine the extreme value of the exhaust temperature of the air conditioner and the exhaust time corresponding to the extreme value of the exhaust temperature according to the exhaust temperature at each moment;
  • Step S30 Obtain the exhaust cycle of the air conditioner according to the exhaust time
  • the extreme value of exhaust gas temperature refers to the highest exhaust temperature or the lowest exhaust temperature within the exhaust temperature fluctuation period, for example, the exhaust temperature detected at 152s is 123°C, and the exhaust temperature detected at 153s The temperature is 124°C, the exhaust temperature detected at 152s is 123°C, and the exhaust temperature detected at 152s is 122°C, then 124°C is the highest exhaust temperature.
  • the exhaust gas temperature extreme value above can be determined according to the exhaust gas difference between the exhaust gas temperatures at two adjacent time points, for example, judging the (i+1 ) second exhaust temperature and the i-th second exhaust temperature, so as to find the highest exhaust temperature or the lowest exhaust temperature and its corresponding exhaust time, specifically, when obtaining the exhaust temperature at each time Afterwards, if the exhaust gas difference between two adjacent moments obtained for the first time is greater than zero, continue to obtain the exhaust gas temperature difference between the subsequent two adjacent exhaust temperatures until the exhaust gas difference is equal to zero or less than Zero, thus the highest exhaust temperature is obtained, and the exhaust time corresponding to the highest exhaust temperature is determined; if the exhaust gas difference obtained for the first time is less than zero, continue to obtain the exhaust temperature between the subsequent two adjacent moments until the exhaust difference is equal to zero or greater than zero, thereby obtaining the lowest exhaust temperature and determining the exhaust time corresponding to the highest exhaust temperature.
  • the above steps are illustrated here. For example, after the exhaust temperature detected at 152s is 123°C and the exhaust temperature detected at 153s is 124°C, calculate the The exhaust gas difference is 1°C, and then continues to detect that the exhaust temperature of the 154th s is 126°C, calculates that the exhaust gas difference between the 153rd and 152s is 2°C, and continues to detect that the exhaust temperature of the 155th s is 125°C, the calculated exhaust difference between the 153rd and 152nd is (-1)°C, which means that the highest exhaust temperature in the exhaust temperature fluctuation period is 126°C, and it corresponds to the corresponding exhaust time for the 154th.
  • the highest exhaust temperature is used as an example for illustration.
  • the difference is greater than zero, continue to obtain the exhaust gas difference between the exhaust gas temperatures at two adjacent subsequent moments until the exhaust gas difference is equal to zero or less than zero, thereby obtaining the first highest exhaust gas temperature and determining the first The first exhaust moment corresponding to the highest exhaust temperature, and then continue to perform the above steps in a loop, that is, after obtaining the first highest exhaust temperature, continue to obtain the exhaust gas difference between the exhaust temperatures at two subsequent adjacent moments, Until the second highest exhaust temperature is obtained according to the exhaust gas difference, and the second exhaust time corresponding to the second highest exhaust temperature is determined.
  • each exhaust The maximum exhaust temperature and the minimum exhaust temperature in a period are not a fixed value, so in this embodiment, the temperature values of the first maximum exhaust temperature and the second maximum exhaust temperature can be the same or different, and finally calculate The time difference between the first exhaust moment and the second exhaust moment to obtain the exhaust cycle.
  • the exhaust temperature trend curve of the air conditioner in addition to determining the exhaust temperature extreme value according to the exhaust gas difference, can also be generated according to the exhaust temperature at each time, so that according to the exhaust temperature trend curve To determine the extreme value of the exhaust gas temperature, this embodiment will not be repeated here.
  • Step S40 Determine whether there is refrigerant leakage in the air conditioner based on the exhaust cycle.
  • the above-mentioned exhaust cycle can be used to reduce false alarms of refrigerant leakage types, thereby improving the accuracy of refrigerant leakage.
  • step S40 in this embodiment specifically further includes:
  • Step S401 When the exhaust cycle of the exhaust temperature is less than the preset exhaust cycle, it is determined that the air conditioner has primary refrigerant leakage;
  • Step S402 When the exhaust period of the exhaust temperature is greater than or equal to the preset exhaust period, it is determined that the air conditioner has secondary refrigerant leakage.
  • the secondary refrigerant leakage means that there may be slight refrigerant leakage in the current air conditioner. Therefore, if the air conditioner has secondary refrigerant leakage, the air conditioner can still have a certain cooling or cooling capacity by adjusting the operating parameters of the air conditioner. The heating effect will not affect the normal use of the air conditioner; the primary refrigerant leakage refers to the serious refrigerant leakage of the current air conditioner and will affect the normal operation of the air conditioner, so if the air conditioner has a primary refrigerant leakage, you need to Immediately control the shutdown of the compressor of the air conditioner to protect the compressor and other equipment. In addition, it can output a reminder message of refrigerant leakage to remind the user
  • the exhaust temperature of the air conditioner at each time is obtained to determine the extreme value of the exhaust temperature of the air conditioner and the corresponding exhaust time, so that Determine the exhaust cycle, and then detect refrigerant leakage through the exhaust cycle, so as to obtain an accurate exhaust cycle by determining the extreme value of the exhaust temperature of the air conditioner and the corresponding exhaust time, and then reduce the Refrigerant leakage false alarm, improve the accuracy of refrigerant leakage detection.
  • FIG. 3 is a schematic flowchart of the second embodiment of the refrigerant leakage detection method of the present application.
  • step S402 the difference between the second embodiment and the first embodiment is that after the step S402, it also includes:
  • Step S50 Decrease the operating frequency of the compressor of the air conditioner, and increase the opening degree of the outdoor electronic expansion valve of the air conditioner.
  • the current refrigerant leakage situation when it is detected that the exhaust cycle of the air conditioner is relatively large, it indicates that the current refrigerant leakage situation is not too serious, that is, the current refrigerant leakage basically does not affect the normal operation of the air conditioner, so the operating parameters of the air conditioner can be adjusted , so that the air conditioner still has a certain cooling or heating effect, which does not affect the normal use of the air conditioner.
  • the operating frequency when adjusting the operating frequency of the air conditioner and the opening of the electronic expansion valve, in order to reduce the operating load of the air conditioner, the operating frequency can be directly reduced to the preset first operating frequency, or Directly increase the opening degree of the electronic expansion valve to the preset first opening degree.
  • the adjustment range of the electronic expansion valve opening can also be determined based on the temperature range of the current outdoor temperature, for example, the outdoor temperature is divided into three temperature ranges: a ⁇ T ⁇ b, b ⁇ T ⁇ c, c ⁇ T ⁇ d , where, when a ⁇ T ⁇ b, the adjustment range of the operating frequency is -f1 (that is, reduce f1), and the adjustment range of the electronic expansion valve opening is P1 (that is, increase P1); when b ⁇ T ⁇ c, The adjustment range of operating frequency is -f2, and the adjustment range of electronic expansion valve opening is P2; when c ⁇ T ⁇ d, the adjustment range of operating frequency is -f3, and the adjustment range of electronic expansion valve opening is P3, among them, f1 ⁇ f2 ⁇ f3, P
  • the operating frequency of the air conditioner is set to a minimum operating frequency limit
  • the opening of the electronic expansion valve is set to a maximum limit opening. Therefore, in this embodiment, when adjusting the operating frequency of the air conditioner and the opening of the electronic expansion valve, when the reduced operating frequency is lower than the minimum limit operating frequency, the air conditioner is controlled to run at the minimum limit operating frequency, and the increased electronic expansion valve opening When it is greater than the maximum limit opening, control the air conditioner to run at the maximum limit opening.
  • the air conditioner is controlled to Specifically, in this embodiment, the air conditioner is first controlled to shut down, and then after detecting that the exhaust temperature of the air conditioner is within the normal exhaust temperature range, the air conditioner is controlled to start operation, and then the target operation of the air conditioner is obtained Exhaust parameters.
  • target operating exhaust parameters refer to the exhaust temperature of the compressor and the operating current of the air conditioner. In this implementation, the exhaust temperature of the compressor and the operating current of the air conditioner are detected.
  • the air conditioner is reduced. increase the operating frequency of the compressor of the air conditioner, and increase the opening of the outdoor electronic expansion valve of the air conditioner.
  • the operating frequency when adjusting the operating frequency of the air conditioner and the opening of the electronic expansion valve, in order to reduce the operating load of the air conditioner, the operating frequency can be directly reduced to the preset second operating frequency, or The opening degree of the electronic expansion valve is directly increased to a preset second opening degree, wherein the second operating frequency is lower than the above-mentioned first operating frequency, and the second opening degree is greater than the above-mentioned first opening degree.
  • the operating frequency and the operating frequency of the air conditioner in this embodiment may also be determined based on the temperature range of the current outdoor temperature, which is not limited in this embodiment.
  • the air conditioner when it is detected that the current refrigerant leakage is not too serious, that is, the current refrigerant leakage basically does not affect the normal operation of the air conditioner, the air conditioner can still have a certain cooling or cooling capacity by adjusting the operating parameters of the air conditioner. Thermal effect, and thus does not affect the normal use of the air conditioner.
  • FIG. 4 is a schematic flowchart of a third embodiment of the refrigerant leakage detection method of the present application.
  • step S401 the difference between the third embodiment and the first embodiment is that after the step S401, it also includes:
  • Step S60 Control the compressor of the air conditioner to stop, and output a refrigerant leakage prompt message.
  • the air conditioner protection module is automatically activated, that is, before the refrigerant leakage of the air conditioner is not repaired , when receiving the control command sent by the user, the operation corresponding to the control command is not executed, and a corresponding prompt message is output based on the display screen of the air conditioner again to prompt that the air conditioner is faulty and cannot operate normally.
  • the compressor when serious leakage of the refrigerant is detected, the compressor is immediately controlled to stop running to protect the compressor of the air conditioner and other equipment, and a corresponding prompt message is output based on the display screen of the air conditioner to remind the user Air conditioner repair is required.
  • FIG. 5 is a schematic diagram of functional modules of an embodiment of a refrigerant leakage detection device of the present application.
  • the refrigerant leakage detection device includes:
  • the acquiring module 10 is configured to acquire the air conditioner at a preset temperature when the exhaust gas temperature of the air conditioner is greater than the preset exhaust temperature and the target operating exhaust parameter of the air conditioner exceeds the preset refrigerant leakage exhaust parameter range. Exhaust temperature at each moment in the time period;
  • the above-mentioned preset exhaust temperature in this embodiment refers to the temperature used to measure whether the exhaust temperature is abnormal when performing exhaust detection, wherein the preset exhaust temperature can be a specific exhaust temperature preset by the user.
  • Air temperature threshold when it is detected that the current exhaust temperature exceeds a specific exhaust temperature threshold preset by the user, it indicates that the exhaust temperature of the air conditioner exceeds the exhaust temperature of the air conditioner during normal operation, and it is determined that the air conditioner needs to perform Refrigerant leakage protection, such as automatically activating the refrigerant leakage protection module for refrigerant leakage protection.
  • the exhaust temperature threshold can be flexibly set for the air conditioner according to the current operating parameters, thereby improving the accuracy of exhaust detection.
  • the operating parameters may be any parameters that can affect the exhaust temperature, such as compression ratio, refrigerant flow rate, and electronic expansion valve opening, which are not limited in this embodiment.
  • the operating state of the air conditioner is adjusted.
  • the air conditioner is first controlled to shut down the air conditioner, and then control the air conditioner to start running after detecting that the exhaust temperature of the air conditioner is within the normal exhaust temperature range, thereby controlling the restart of the air conditioner to avoid damage to the air conditioner compressor, and to prevent damage to the air conditioner While starting the operation, control the outdoor and indoor fans of the air conditioner to run at the highest speed, thereby completing the adjustment of the operating state of the air conditioner.
  • the target operating exhaust parameters when the air conditioner is running in the adjusted operating state are obtained, so as to avoid the unstable operation of the air conditioner in the early stage of restarting the operation of the air conditioner.
  • fluctuations in operating parameters such as exhaust temperature and inaccurate detection results are caused.
  • the exhaust temperature of the air conditioner and the environment in which the air conditioner is located are driven by adjusting the operating state of the air conditioner.
  • the air conditioner has refrigerant leakage. In this way, the misjudgment rate of refrigerant leakage can be reduced.
  • the exhaust temperature of the air conditioner at each moment within the preset time period is obtained, so as to obtain the exhaust temperature of the air conditioner at each moment
  • the exhaust temperature determines the level of refrigerant leakage, thereby improving the accuracy of refrigerant leakage contact.
  • the above-mentioned target operating exhaust parameters refer to the exhaust temperature of the compressor and the operating current of the air conditioner.
  • the air conditioner it is detected whether the air conditioner is The refrigerant leakage detection function needs to be triggered.
  • the air conditioner when it is detected that the exhaust temperature is greater than the exhaust temperature threshold and the operating current is less than the operating current threshold, that is, when the preset refrigerant leakage exhaust parameter range is exceeded, If it indicates that the air conditioner is operating abnormally, it is determined that there is refrigerant leakage in the air conditioner, that is, the air conditioner needs to trigger the refrigerant leakage detection function; otherwise, it indicates that the air conditioner is operating normally, and it is determined that the air conditioner does not need to trigger the refrigerant leakage detection function.
  • the preset refrigerant leakage detection process is executed, that is, the exhaust temperature at each moment within the preset time period is obtained first, and the preset refrigerant leakage is completed through the exhaust temperature at each moment detection process.
  • the method of timing acquisition when acquiring the exhaust gas temperature at each moment, the method of timing acquisition is adopted, wherein the timing can be started after detecting that the above parameters exceed the preset refrigerant leakage exhaust parameter range, and can also be detected after the exhaust gas temperature is detected. After the temperature is higher than the preset discharge temperature, start timing. For example, after detecting that the discharge temperature is higher than the preset discharge temperature, the discharge temperature of the compressor and the operating current of the air conditioner are detected every 1s.
  • the refrigerant leakage detection function After the temperature is greater than the exhaust temperature threshold and the operating current is less than the operating current threshold, the refrigerant leakage detection function will be triggered, and continue to obtain the current exhaust temperature of the air conditioner, and continue to accumulate time, for example, the i-th second, and then sequentially obtain the (i The exhaust gas temperature at +1) second, (i+2) second, and so on, wherein, the time interval of timing acquisition may be any time, which is not limited in this embodiment.
  • the first determination module 20 is configured to determine the extreme value of the exhaust temperature of the air conditioner and the exhaust time corresponding to the extreme value of the exhaust temperature according to the exhaust temperature at each moment;
  • the second acquisition module 30 is configured to acquire the exhaust cycle of the air conditioner according to the exhaust timing
  • the extreme value of exhaust gas temperature refers to the highest exhaust temperature or the lowest exhaust temperature within the exhaust temperature fluctuation period, for example, the exhaust temperature detected at 152s is 123°C, and the exhaust temperature detected at 153s The temperature is 124°C, the exhaust temperature detected at 152s is 123°C, and the exhaust temperature detected at 152s is 122°C, then 124°C is the highest exhaust temperature.
  • the exhaust gas temperature extreme value above can be determined according to the exhaust gas difference between the exhaust gas temperatures at two adjacent time points, for example, judging the (i+1 ) second exhaust temperature and the i-th second exhaust temperature, so as to find the highest exhaust temperature or the lowest exhaust temperature and its corresponding exhaust time, specifically, when obtaining the exhaust temperature at each time Afterwards, if the exhaust gas difference between two adjacent moments obtained for the first time is greater than zero, continue to obtain the exhaust gas temperature difference between the subsequent two adjacent exhaust temperatures until the exhaust gas difference is equal to zero or less than Zero, thus the highest exhaust temperature is obtained, and the exhaust time corresponding to the highest exhaust temperature is determined; if the exhaust gas difference obtained for the first time is less than zero, continue to obtain the exhaust temperature between the subsequent two adjacent moments until the exhaust difference is equal to zero or greater than zero, thereby obtaining the lowest exhaust temperature and determining the exhaust time corresponding to the highest exhaust temperature.
  • the above steps are illustrated here. For example, after the exhaust temperature detected at 152s is 123°C and the exhaust temperature detected at 153s is 124°C, calculate the The exhaust gas difference is 1°C, and then continues to detect that the exhaust temperature of the 154th s is 126°C, calculates that the exhaust gas difference between the 153rd and 152s is 2°C, and continues to detect that the exhaust temperature of the 155th s is 125°C, the calculated exhaust difference between the 153rd and 152nd is (-1)°C, which means that the highest exhaust temperature in the exhaust temperature fluctuation period is 126°C, and it corresponds to the corresponding exhaust time for the 154th.
  • the highest exhaust temperature is used as an example for illustration.
  • the difference is greater than zero, continue to obtain the exhaust gas difference between the exhaust gas temperatures at two adjacent subsequent moments until the exhaust gas difference is equal to zero or less than zero, thereby obtaining the first highest exhaust gas temperature and determining the first The first exhaust moment corresponding to the highest exhaust temperature, and then continue to perform the above steps in a loop, that is, after obtaining the first highest exhaust temperature, continue to obtain the exhaust gas difference between the exhaust temperatures at two subsequent adjacent moments, Until the second highest exhaust temperature is obtained according to the exhaust gas difference, and the second exhaust time corresponding to the second highest exhaust temperature is determined.
  • each exhaust The maximum exhaust temperature and the minimum exhaust temperature in a period are not a fixed value, so in this embodiment, the temperature values of the first maximum exhaust temperature and the second maximum exhaust temperature can be the same or different, and finally calculate The time difference between the first exhaust moment and the second exhaust moment to obtain the exhaust cycle.
  • the exhaust temperature trend curve of the air conditioner in addition to determining the exhaust temperature extreme value according to the exhaust gas difference, can also be generated according to the exhaust temperature at each time, so that according to the exhaust temperature trend curve To determine the extreme value of the exhaust gas temperature, this embodiment will not be repeated here.
  • the second determination module 40 is configured to determine whether there is refrigerant leakage in the air conditioner based on the exhaust cycle.
  • the false alarm of refrigerant leakage can be reduced by the above exhaust cycle, thereby improving the accuracy of refrigerant leakage. Specifically, when the exhaust cycle of the detected exhaust temperature is less than the preset exhaust cycle, it is determined that the air conditioner If the air conditioner has primary refrigerant leakage, when it is detected that the exhaust cycle of the exhaust temperature is greater than or equal to the preset exhaust cycle, it is determined that the air conditioner has secondary refrigerant leakage.
  • the air conditioner can still have a certain cooling or heating effect by adjusting the operating parameters of the air conditioner, so as not to affect the normal use of the air conditioner. If there is a primary refrigerant leakage, it is necessary to immediately stop the compressor of the air conditioner to protect the compressor and other equipment. In addition, a refrigerant leakage prompt message can be output to remind the user that the air conditioner has a refrigerant leakage failure.
  • the exhaust temperature of the air conditioner at each time is obtained to determine the extreme value of the exhaust temperature of the air conditioner and the corresponding exhaust time, so that Determine the exhaust cycle, and then detect refrigerant leakage through the exhaust cycle, so as to obtain an accurate exhaust cycle by determining the extreme value of the exhaust temperature of the air conditioner and the corresponding exhaust time, and then reduce the Refrigerant leakage false alarm, improve the accuracy of refrigerant leakage detection.
  • the embodiment of the present application also provides a computer storage medium, on which a refrigerant leakage detection program is stored, and when the refrigerant leakage detection program is run by a processor, the steps of the refrigerant leakage detection method described above are implemented. I won't repeat them here.
  • the term “comprises”, “comprises” or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

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Abstract

本申请涉及空调器技术领域，公开了一种冷媒泄露检测方法、装置、空调器及存储介质，该方法包括：在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；根据所述排气时刻获取所述空调器的排气周期；基于所述排气周期确定所述空调器是否存在冷媒泄露。

Description

冷媒泄露检测方法、装置、空调器及存储介质
本申请要求于2021年5月27日申请的、申请号为202110589153.4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
本申请涉及空调器技术领域，尤其涉及一种冷媒泄露检测方法、装置、空调器及存储介质。
 背景技术
目前对空调器进行冷媒泄露检测检测时大致采用两类检测方法，一类是在冷媒或制冷剂中添加某种组分，对这种组分浓度进行检测，从而判断冷媒是否泄露，另一类则是通过检测排气、回气、压力等参数，在运行某一定时间后检测参数，从而判定是否出现冷媒泄露。
然而目前在采用以上两种检测方法进行冷媒检测时，若在制冷剂中添加组分会影响换热特性，而且需要专用设备进行检测，成本较高，若对排气、回气、压力等参数进行检测，由于排气、回气、压力等会随着冷媒泄露后触发的各种限频值进行波动，而这种波动周期是不定的，从而影响冷媒泄露检测的准确性。
 技术问题
本申请提供一种冷媒泄露检测方法、装置、空调器及存储介质，旨在解决目前空调器运行参数会随着冷媒泄露后触发的各种限频值进行波动，从而影响冷媒泄露检测的准确性的技术问题。
 技术解决方案
为实现上述目的，本申请提供一种冷媒泄露检测方法，所述方法包括：
在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
根据所述排气时刻获取所述空调器的排气周期；
基于所述排气周期确定所述空调器是否存在冷媒泄露。
在一实施例中，所述根据各时刻的排气温度确定所述空调器的排气温度极值的步骤包括：
确定相邻两个时刻的排气温度之间的排气差值；
根据所述排气差值确定所述空调器的排气温度极值。
在一实施例中，所述基于所述排气周期确定所述空调器是否存在冷媒泄露的步骤，还包括：
在所述排气温度的排气周期小于预设排气周期时，判定所述空调器存在一级冷媒泄露；
在所述排气温度的排气周期大于或等于预设排气周期时，判定所述空调器存在二级冷媒泄露。
在一实施例中，所述判定所述空调器存在二级冷媒泄露的步骤之后，还包括：
降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度。
在一实施例中，所述降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度的步骤之后，还包括：
控制所述空调器重启，并获取所述空调器的目标运行排气参数；
在检测到所述目标运行排气参数超出预设冷媒泄露检测的参数范围时，控制所述空调器的压缩机停机，并输出冷媒泄露提示消息。
在一实施例中，所述获取所述空调器的目标运行排气参数的步骤之后，还包括：
在检测到所述目标运行排气参数未超出预设冷媒泄露检测的参数范围时，降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度。
在一实施例中，所述判定所述空调器存在一级冷媒泄露的步骤之后，还包括：
控制所述空调器的压缩机停机，并输出冷媒泄露提示消息。
在一实施例中，在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度的步骤，还包括：
在空调器的排气温度大于预设排气温度时，对所述空调器的运行状态进行调整，并获取所述空调器以调整后的运行状态运行时的目标运行排气参数；
在所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度。
此外，为实现上述目的，本申请还提供一种冷媒泄露检测装置，所述冷媒泄露检测装置包括：
第一获取模块，用于在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
第一确定模块，用于根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
第二获取模块，用于根据所述排气时刻获取所述空调器的排气周期；
第二确定模块，用于基于所述排气周期确定所述空调器是否存在冷媒泄露。
此外，为实现上述目的，本申请还提供一种空调器，所述空调器包括处理器，存储器以及存储在所述存储器中的冷媒泄露检测程序，所述冷媒泄露检测程序被所述处理器运行时，实现如上所述的冷媒泄露检测方法的步骤。
此外，为实现上述目的，本申请还提供一种计算机存储介质，所述计算机存储介质上存储有冷媒泄露检测程序，所述冷媒泄露检测程序被处理器运行时实现如上所述冷媒泄露检测方法的步骤。
 有益效果
相比现有技术，本申请提供一种冷媒泄露检测方法，通过在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；根据所述排气时刻获取所述空调器的排气周期；基于所述排气周期确定所述空调器是否存在冷媒泄露，由此通过确定空调器的排气温度极值及其对应的排气时刻来获取精准的排气周期，进而基于精准的排气周期减少冷媒泄露误报，提高了冷媒泄露检测的准确性。
 附图说明
图1是本申请各实施例涉及的空调器的硬件结构示意图；
图2是本申请冷媒泄露检测方法第一实施例的一流程示意图；
图3是本申请冷媒泄露检测方法第一实施例的另一流程示意图；
图4是本申请冷媒泄露检测方法第二实施例的流程示意图；
图5是本申请冷媒泄露检测方法第三实施例的流程示意图；
图6是本申请冷媒泄露检测装置一实施例的功能模块示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
参照图1，图1是本申请各实施例涉及的空调器的硬件结构示意图。本申请实施例中，空调器可以包括处理器1001（例如中央处理器central processing unit、CPU），通信总线1002，输入端口1003，输出端口1004，存储器1005。其中，通信总线1002用于实现这些组件之间的连接通信；输入端口1003用于数据输入；输出端口1004用于数据输出，存储器1005可以是高速RAM存储器，也可以是稳定的存储器，例如磁盘存储器，存储器1005可选的还可以是独立于前述处理器1001的存储装置。本领域技术人员可以理解，图1中示出的硬件结构并不构成对本申请的限定，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。
继续参照图1，图1中作为一种可读存储介质的存储器1005可以包括操作系统、网络通信模块、应用程序模块以及冷媒泄露检测程序。在图1所示的终端中，网络接口1004主要用于连接后台服务器，与后台服务器进行数据通信；用户接口1003主要用于连接客户端（用户端），与客户端进行数据通信；而处理器1001可以用于调用存储器1005中存储的冷媒泄露检测程序。
在本实施例中，冷媒泄露检测装置包括：存储器1005、处理器1001及存储在所述存储器1005上并可在所述处理器1001上运行的冷媒泄露检测程序，其中，处理器1001调用存储器1005中存储的冷媒泄露检测程序时，并执行以下操作：
在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
根据所述排气时刻获取所述空调器的排气周期；
基于所述排气周期确定所述空调器是否存在冷媒泄露。
基于图1所示的硬件结构，本申请第一实施例提供了一种冷媒泄露检测方法，参照图2，图2为本申请冷媒泄露检测方法第一实施例的流程示意图。
本申请实施例提供了冷媒泄露检测方法的实施例，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，可以以不同于此处的顺序执行所示出或描述的步骤。
具体地，参考图2，本实施例冷媒泄露检测方法包括：
步骤S10：在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
具体而言，本实施例中上述预设排气温度指代进行排气检测时用于衡量排气温度是否异常的温度，其中，预设排气温度可以为用户预先设定的某一特定排气温度阈值，当检测到当前排气温度超出用户预先设定的某一特定排气温度阈值时，表明空调器的排气温度超出空调器正常运行时的排气温度，则判定空调器需要进行冷媒泄露保护，例如自动激活冷媒泄露保护模块，以进行冷媒泄露保护，另外由于各空调器的性能参数及空调器在各运行参数下的运行状况不同，因此若采用一特定排气温度阈值则可能会导致排气检测不准确，进而影响冷媒泄露检测不准确，因此本实施例中还可以为空调器根据当前运行参数来灵活设定排气温度阈值，从而提高排气检测的准确性，其中，运行参数可以为压缩比、制冷剂流量、电子膨胀阀开度等任意可影响排气温度的参数，本实施例对此不做限制。
此外为了避免空调器的压缩机出现损坏，本实施中在检测到空调器的排气温度大于预设排气温度时，对空调器的运行状态进行调整，具体地，本实施例中先控制空调器关机，接着在检测到空调器的排气温度处于正常排气温度范围内之后，再控制空调器启动运行，由此通过控制空调器重启运行，避免空调器压缩机出现损坏，并在空调器启动运行的同时控制空调器的室外内风机以最高转速运行，由此完成空调器运行状态的调整。
接着在空调器的室外内风机以最高转速运行达到一定时长之后，再获取空调器以调整后的运行状态运行时的目标运行排气参数，从而避免空调器重启运行的前期由于空调器运行不稳定而导致排气温度等运行参数出现波动，进而导致检测结果不准确的问题，另外需要说明的是本实施例中通过调整空调器运行状态，带动空调器的排气温度及空调器所处环境的环境温度发生改变，如果在空调器的排气温度及空调器所处环境的环境温度发生改变后再次检测目标运行排气参数超出预设冷媒泄露排气参数范围，才可判定空调出现冷媒泄漏的情况，从而可以降低冷媒泄漏误判率。
进一步地，本实施例中还在空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取空调器在预设时间段内各时刻的排气温度，由此通过各时刻的排气温度确定出冷媒泄露的等级，从而提高冷媒泄露接触的精准性。
另外，需要说明的是，上述目标运行排气参数指代压缩机的排气温度以及空调器的运行电流，本实施中通过检测压缩机的排气温度以及空调器的运行电流来检测空调器是否需要触发冷媒泄露检测功能，换句话说，本实施例中当检测到排气温度大于排气温度阈值，且运行电流小于运行电流阈值时，也即超出上述预设冷媒泄露排气参数范围时，表明空调器运行异常，则判定空调器存在冷媒泄露，也即空调器需要触发冷媒泄露检测功能，反之则表明空调器运行正常，则判定空调器不需要触发冷媒泄露检测功能。
当检测到空调器需要触发冷媒泄露检测功能时，执行预设冷媒泄露检测过程，也即先获取预设时间段内各时刻的排气温度，从而通过各时刻的排气温度完成预设冷媒泄露检测过程。
本实施例中，在获取各时刻的排气温度时，采用定时获取的方式，其中，可在检测上述参数超出预设冷媒泄露排气参数范围后，开始计时，此外也可以在检测到排气温度大于预设排气温度后，开始计时，例如在检测到排气温度大于预设排气温度后，每隔1s检测一次压缩机的排气温度以及空调器的运行电流，当检测到排气温度大于排气温度阈值，且运行电流小于运行电流阈值后，触发冷媒泄露检测功能，并继续获取当前空调器的排气温度，并继续累加计时，例如第i秒，接着再依次获取第（i+1）秒、第（i+2）秒时的排气温度，依次类推，其中，定时获取的时间间隔可为任意时间，本实施例对此不做限制。
步骤S20：根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
步骤S30：根据所述排气时刻获取所述空调器的排气周期；
具体而言，上述排气温度极值指代排气温度波动周期内的最高排气温度或最低排气温度，例如在第152s检测到的排气温度为123℃、第153s检测到的排气温度为124℃、第152s检测到的排气温度为123℃、第152s检测到的排气温度为122℃，则124℃即为最高排气温度。
本实施例中，在获取各时刻的排气温度之后，可以根据相邻两个时刻的排气温度之间的排气差值，来确定上述排气温度极值，例如判断第（i+1）秒的排气温度与第i秒的排气温度之间的差值，从而找到最高排气温度或最低排气温度和其对应的排气时刻，具体地，在获取各时刻的排气温度之后，若第一次得到的相邻两个时刻的排气差值大于零，则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者小于零，由此得到最高排气温度，并确定最高排气温度对应的排气时刻；若第一次得到的排气差值小于零时则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者大于零，由此得到最低排气温度，并确定最高排气温度对应的排气时刻。
为了便于理解，在此对上述步骤进行举例说明，例如在第152s检测到的排气温度为123℃、第153s检测到的排气温度为124℃后，计算出第153s与第152s之间的排气差值为1℃，接着继续检测到第154s的排气温度为126℃，计算出第153s与第152s之间的排气差值为2℃，继续检测到第155s的排气温度为125℃，计算出第153s与第152s之间的排气差值为（-1）℃，也即表明排气温度波动周期内的最高排气温度为126℃，且其对对应的排气时刻为第154s。
另外需要说明的是，本实施例中需要获取至少两个最高排气温度或最低排气温度，由此获取排气周期，在此以最高排气温度举例说明，当第一次得到的排气差值大于零，则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者小于零，由此得到第一最高排气温度，并确定第一最高排气温度对应的第一排气时刻，接着继续循环执行上述步骤，即在得到第一最高排气温度之后，继续获取后续相邻两个时刻的排气温度之间的排气差值，直至根据排气差值得到第二最高排气温度，并确定第二最高排气温度对应的第二排气时刻，另外需要说明的是，由于排气温度是灵活可变动的，因此各排气周期内的最高排气温度与最低排气温度并非为一个固定值，因此本实施例中上述第一最高排气温度与第二最高排气温度的温度数值可以相同，也可以不同，最后计算出第一排气时刻与第二排气时刻之间的时间差值，以得到排气周期。
另外本实施例中，除了根据排气差值来确定排气温度极值之外，还可以根据各时刻的排气温度生成空调器的排气温度趋势变化曲线，从而根据排气温度趋势变化曲线来确定排气温度极值，本实施例在此不再赘述。
步骤S40：基于所述排气周期确定所述空调器是否存在冷媒泄露。
本实施例中，可以通过上述排气周期来减少冷媒泄露类型的误报，从而提高冷媒泄露的准确性.
具体地，参考图3，本实施例中上述步骤S40具体还包括：
步骤S401：在所述排气温度的排气周期小于预设排气周期时，判定所述空调器存在一级冷媒泄露；
步骤S402：在所述排气温度的排气周期大于或等于预设排气周期时，判定所述空调器存在二级冷媒泄露。
需要说明的是，二级冷媒泄露指代当前空调器可能存在轻微的冷媒泄露，因此若空调器存在二级冷媒泄露，则可以通过调整空调器的运行参数，让空调器仍具有一定的制冷或制热效果，从而不影响空调器的正常使用；而一级冷媒泄露指代当前空调器存在比较严重的冷媒泄露且会影响空调器的正常运行，因此若空调器存在一级冷媒泄露，则需要立即控制空调器的压缩机停机，以保护压缩机等设备，此外还可以输出冷媒泄露提示消息，以提示用户
应当理解的是，以上仅为举例说明，对本申请的技术方案并不构成任何限制，本领域的技术人员在实际应用中可以基于需要进行设置，此处不再一一列举。
在本实施例中，在检测到空调器需要触发冷媒泄露检测功能后，获取空调器在各时刻的排气温度，以确定出空调器的排气温度极值及其对应的排气时刻，从而确定出排气周期，进而通过排气周期检测冷媒泄露，由此通过确定空调器的排气温度极值及其对应的排气时刻来获取精准的排气周期，进而基于精准的排气周期减少冷媒泄露误报，提高了冷媒泄露检测的准确性。
进一步地，基于本申请冷媒泄露检测方法的第一实施例，提出本申请冷媒泄露检测方法的第二实施例。
参照图3，图3为本申请冷媒泄露检测方法的第二实施例的流程示意图；
所述第二实施例与所述第一实施例的区别在于，所述步骤S402之后，还包括：
步骤S50：降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度。
本实施例中，当检测到空调器的排气周期较大时，表明当前冷媒泄露情况不太严重，即当前冷媒泄露基本不太影响空调器的正常运行，因此可以通过调整空调器的运行参数，让空调器仍然具有一定的制冷或制热效果，进而不影响空调器的正常使用。
需要说明的是，本实施例中在调整空调器的运行频率及电子膨胀阀开度时，为了降低空调器的运行负载，可以直接将运行频率降低至预先设定的第一运行频率，也可以直接将电子膨胀阀开度增大至预先设定的第一开度。
另外为了维持室内温度的稳定性，避免空调器的运行频率及电子膨胀阀开度的调整幅度过大从而导致室内温度波动幅度过大影响用户舒适性，本实施例中上述空调器的运行频率及电子膨胀阀开度的调整幅度还可以基于当前室外温度所处的温度区间来确定，例如将室外温度划分为三个温度区间：a≤T<b，b≤T<c，c≤T≤d，其中，当a≤T<b时，运行频率的调整幅度为-f1（即降低f1)，电子膨胀阀开度的调整幅度为P1(即增大P1)；当当b≤T<c时，运行频率的调整幅度为-f2，电子膨胀阀开度的调整幅度为P2;当c≤T≤d时，运行频率的调整幅度为-f3，电子膨胀阀开度的调整幅度为P3，其中，f1<f2<f3，P1<P2<P3，也即室外温度越高，空调器的运行频率的降低幅度越大，电子膨胀阀开度的增大幅度越大。
另外需要说明的是，为了保证空调器的正常运行，一般情况下，空调器的运行频率设有一个最小限制运行频率，电子膨胀阀开度设有一个最大限制开度，因此本实施例中，在对空调器的运行频率及电子膨胀阀开度进行调整时，在降低后的运行频率小于最小限制运行频率时，控制空调器以最小限制运行频率运行，在增大后的电子膨胀阀开度大于最大限制开度时，控制空调器以最大限制开度运行。
为了避免由于冷媒泄露前期所触发的排气温度等参数由于波动幅度小而导致未检测出冷媒泄露，本实施例中，在对空调器的运行频率及电子膨胀阀开度进行调整之后，控制空调器重启运行，具体地，本实施例中先控制空调器关机，接着在检测到空调器的排气温度处于正常排气温度范围内之后，再控制空调器启动运行，接着获取空调器的目标运行排气参数，需要说明的是，上述目标运行排气参数指代压缩机的排气温度以及空调器的运行电流，本实施中在此通过检测压缩机的排气温度以及空调器的运行电流来检测空调器是否存在比较严重的一级冷媒泄露，当检测到排气温度大于排气温度阈值，且运行电流小于运行电流阈值时，也即目标运行排气参数超出预设冷媒泄露检测的参数范围时，则判定空调器存在比较严重的一级冷媒泄露，因此则为了保护空调器的压缩机等设备，控制空调器的压缩机停机，并基于空调器的显示屏输出冷媒泄露提示消息，以提示用户需要进行空调器维修，反之，当检测到目标运行排气参数未超出预设冷媒泄露检测的参数范围时，判定当前空调器不存在比较严重的一级冷媒泄露，则即当前冷媒泄露基本不太影响空调器的正常运行，因此可以通过调整空调器的运行参数，让空调器仍然具有一定的制冷或制热效果，进而不影响空调器的正常使用，具体地，本实施例中采用降低空调器的压缩机的运行频率，并增大空调器的室外电子膨胀阀的开度。
需要说明的是，本实施例中在调整空调器的运行频率及电子膨胀阀开度时，为了降低空调器的运行负载，可以直接将运行频率降低至预先设定的第二运行频率，也可以直接将电子膨胀阀开度增大至预先设定的第二开度，其中，第二运行频率小于上述第一运行频率，第二开度大于上述第一开度。
另外为了维持室内温度的稳定性，避免空调器的运行频率及电子膨胀阀开度的调整幅度过大从而导致室内温度波动幅度过大影响用户舒适性，本实施例中上述空调器的运行频率及电子膨胀阀开度的调整幅度还可以基于当前室外温度所处的温度区间来确定，本实施例对此不做限制。
在本实施例中，在检测到当前冷媒泄露情况不太严重，即当前冷媒泄露基本不太影响空调器的正常运行，可以通过调整空调器的运行参数，让空调器仍然具有一定的制冷或制热效果，进而不影响空调器的正常使用。
进一步地，基于本申请冷媒泄露检测方法的第一实施例，提出本申请冷媒泄露检测方法的第三实施例。
参照图4，图4为本申请冷媒泄露检测方法的第三实施例的流程示意图；
所述第三实施例与所述第一实施例的区别在于，所述步骤S401之后，还包括：
步骤S60：控制所述空调器的压缩机停机，并输出冷媒泄露提示消息。
本实施例中，当检测到空调器的排气周期较小时，表明当前冷媒泄露情况比较严重，则为了保护空调器的压缩机等设备，需立刻控制压缩机停止运行，并基于空调器的显示屏输出相应的提示消息，以提示用户需要进行空调器维修。
此外，为了避免用户再次重启空调器导致空调器的压缩机等设备损坏，本实施例中，在控制压缩机停止运行之后，自动启动空调器保护模块，即在空调器的冷媒泄露未维修好之前，在接收到用户发送的控制指令时，不执行控制指令对应的操作，并再次基于空调器的显示屏输出相应的提示消息，以提示空调器出现故障，不能正常运行。
在本实施例中，在检测到冷媒泄露情况比较严重时，则立刻控制压缩机停止运行，以保护空调器的压缩机等设备，并基于空调器的显示屏输出相应的提示消息，以提示用户需要进行空调器维修。
此外，本实施例还提供一种冷媒泄露检测装置。参照图5，图5为本申请冷媒泄露检测装置一实施例的功能模块示意图。
具体地，参照图5，所述冷媒泄露检测装置包括：
获取模块10，用于在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
具体而言，本实施例中上述预设排气温度指代进行排气检测时用于衡量排气温度是否异常的温度，其中，预设排气温度可以为用户预先设定的某一特定排气温度阈值，当检测到当前排气温度超出用户预先设定的某一特定排气温度阈值时，表明空调器的排气温度超出空调器正常运行时的排气温度，则判定空调器需要进行冷媒泄露保护，例如自动激活冷媒泄露保护模块，以进行冷媒泄露保护，另外由于各空调器的性能参数及空调器在各运行参数下的运行状况不同，因此若采用一特定排气温度阈值则可能会导致排气检测不准确，进而影响冷媒泄露检测不准确，因此本实施例中还可以为空调器根据当前运行参数来灵活设定排气温度阈值，从而提高排气检测的准确性，其中，运行参数可以为压缩比、制冷剂流量、电子膨胀阀开度等任意可影响排气温度的参数，本实施例对此不做限制。
此外为了避免空调器的压缩机出现损坏，本实施中在检测到空调器的排气温度大于预设排气温度时，对空调器的运行状态进行调整，具体地，本实施例中先控制空调器关机，接着在检测到空调器的排气温度处于正常排气温度范围内之后，再控制空调器启动运行，由此通过控制空调器重启运行，避免空调器压缩机出现损坏，并在空调器启动运行的同时控制空调器的室外内风机以最高转速运行，由此完成空调器运行状态的调整。
接着在空调器的室外内风机以最高转速运行达到一定时长之后，再获取空调器以调整后的运行状态运行时的目标运行排气参数，从而避免空调器重启运行的前期由于空调器运行不稳定而导致排气温度等运行参数出现波动，进而导致检测结果不准确的问题，另外需要说明的是本实施例中通过调整空调器运行状态，带动空调器的排气温度及空调器所处环境的环境温度发生改变，如果在空调器的排气温度及空调器所处环境的环境温度发生改变后再次检测目标运行排气参数超出预设冷媒泄露排气参数范围，才可判定空调出现冷媒泄漏的情况，从而可以降低冷媒泄漏误判率。
进一步地，本实施例中还在空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取空调器在预设时间段内各时刻的排气温度，由此通过各时刻的排气温度确定出冷媒泄露的等级，从而提高冷媒泄露接触的精准性。
另外，需要说明的是，上述目标运行排气参数指代压缩机的排气温度以及空调器的运行电流，本实施中通过检测压缩机的排气温度以及空调器的运行电流来检测空调器是否需要触发冷媒泄露检测功能，换句话说，本实施例中当检测到排气温度大于排气温度阈值，且运行电流小于运行电流阈值时，也即超出上述预设冷媒泄露排气参数范围时，表明空调器运行异常，则判定空调器存在冷媒泄露，也即空调器需要触发冷媒泄露检测功能，反之则表明空调器运行正常，则判定空调器不需要触发冷媒泄露检测功能。
当检测到空调器需要触发冷媒泄露检测功能时，执行预设冷媒泄露检测过程，也即先获取预设时间段内各时刻的排气温度，从而通过各时刻的排气温度完成预设冷媒泄露检测过程。
本实施例中，在获取各时刻的排气温度时，采用定时获取的方式，其中，可在检测上述参数超出预设冷媒泄露排气参数范围后，开始计时，此外也可以在检测到排气温度大于预设排气温度后，开始计时，例如在检测到排气温度大于预设排气温度后，每隔1s检测一次压缩机的排气温度以及空调器的运行电流，当检测到排气温度大于排气温度阈值，且运行电流小于运行电流阈值后，触发冷媒泄露检测功能，并继续获取当前空调器的排气温度，并继续累加计时，例如第i秒，接着再依次获取第（i+1）秒、第（i+2）秒时的排气温度，依次类推，其中，定时获取的时间间隔可为任意时间，本实施例对此不做限制。
第一确定模块20，用于根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
第二获取模块30，用于根据所述排气时刻获取所述空调器的排气周期；
具体而言，上述排气温度极值指代排气温度波动周期内的最高排气温度或最低排气温度，例如在第152s检测到的排气温度为123℃、第153s检测到的排气温度为124℃、第152s检测到的排气温度为123℃、第152s检测到的排气温度为122℃，则124℃即为最高排气温度。
本实施例中，在获取各时刻的排气温度之后，可以根据相邻两个时刻的排气温度之间的排气差值，来确定上述排气温度极值，例如判断第（i+1）秒的排气温度与第i秒的排气温度之间的差值，从而找到最高排气温度或最低排气温度和其对应的排气时刻，具体地，在获取各时刻的排气温度之后，若第一次得到的相邻两个时刻的排气差值大于零，则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者小于零，由此得到最高排气温度，并确定最高排气温度对应的排气时刻；若第一次得到的排气差值小于零时则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者大于零，由此得到最低排气温度，并确定最高排气温度对应的排气时刻。
为了便于理解，在此对上述步骤进行举例说明，例如在第152s检测到的排气温度为123℃、第153s检测到的排气温度为124℃后，计算出第153s与第152s之间的排气差值为1℃，接着继续检测到第154s的排气温度为126℃，计算出第153s与第152s之间的排气差值为2℃，继续检测到第155s的排气温度为125℃，计算出第153s与第152s之间的排气差值为（-1）℃，也即表明排气温度波动周期内的最高排气温度为126℃，且其对对应的排气时刻为第154s。
另外需要说明的是，本实施例中需要获取至少两个最高排气温度或最低排气温度，由此获取排气周期，在此以最高排气温度举例说明，当第一次得到的排气差值大于零，则继续获取后续相邻两个时刻的排气温度之间的排气差值，直至排气差值等于零或者小于零，由此得到第一最高排气温度，并确定第一最高排气温度对应的第一排气时刻，接着继续循环执行上述步骤，即在得到第一最高排气温度之后，继续获取后续相邻两个时刻的排气温度之间的排气差值，直至根据排气差值得到第二最高排气温度，并确定第二最高排气温度对应的第二排气时刻，另外需要说明的是，由于排气温度是灵活可变动的，因此各排气周期内的最高排气温度与最低排气温度并非为一个固定值，因此本实施例中上述第一最高排气温度与第二最高排气温度的温度数值可以相同，也可以不同，最后计算出第一排气时刻与第二排气时刻之间的时间差值，以得到排气周期。
另外本实施例中，除了根据排气差值来确定排气温度极值之外，还可以根据各时刻的排气温度生成空调器的排气温度趋势变化曲线，从而根据排气温度趋势变化曲线来确定排气温度极值，本实施例在此不再赘述。
第二确定模块40，用于基于所述排气周期确定所述空调器是否存在冷媒泄露。
本实施例中，可以通过上述排气周期来减少冷媒泄露的误报，从而提高冷媒泄露的准确性，具体地，当检测到排气温度的排气周期小于预设排气周期时，判定空调器存在一级冷媒泄露，当检测到排气温度的排气周期大于或等于预设排气周期时，判定空调器存在二级冷媒泄露。
另外本实施例中，若空调器存在二级冷媒泄露，则可以通过调整空调器的运行参数，让空调器仍具有一定的制冷或制热效果，从而不影响空调器的正常使用，若空调器存在一级冷媒泄露，则需要立即控制空调器的压缩机停机，以保护压缩机等设备，此外还可以输出冷媒泄露提示消息，以提示用户空调器出现冷媒泄露故障。
在本实施例中，在检测到空调器需要触发冷媒泄露检测功能后，获取空调器在各时刻的排气温度，以确定出空调器的排气温度极值及其对应的排气时刻，从而确定出排气周期，进而通过排气周期检测冷媒泄露，由此通过确定空调器的排气温度极值及其对应的排气时刻来获取精准的排气周期，进而基于精准的排气周期减少冷媒泄露误报，提高了冷媒泄露检测的准确性。
此外，本申请实施例还提供一种计算机存储介质，所述计算机存储介质上存储有冷媒泄露检测程序，所述冷媒泄露检测程序被处理器运行时实现如上所述冷媒泄露检测方法的步骤，此处不再赘述。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者系统不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者系统所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者系统中还存在另外的相同要素。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在如上所述的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备执行本申请各个实施例所述的方法。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (11)

  1. 一种冷媒泄露检测方法，其中，所述方法包括：
    在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
    根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
    根据所述排气时刻获取所述空调器的排气周期；
    基于所述排气周期确定所述空调器是否存在冷媒泄露。
  2. 根据权利要求1所述的冷媒泄露检测方法，其中，所述根据各时刻的排气温度确定所述空调器的排气温度极值的步骤包括：
    确定相邻两个时刻的排气温度之间的排气差值；
    根据所述排气差值确定所述空调器的排气温度极值。
  3. 根据权利要求1所述的冷媒泄露检测方法，其中，所述基于所述排气周期确定所述空调器是否存在冷媒泄露的步骤，还包括：
    在所述排气温度的排气周期小于预设排气周期时，判定所述空调器存在一级冷媒泄露；
    在所述排气温度的排气周期大于或等于预设排气周期时，判定所述空调器存在二级冷媒泄露。
  4. 根据权利要求3所述的冷媒泄露检测方法，其中，所述判定所述空调器存在二级冷媒泄露的步骤之后，还包括：
    降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度。
  5. 根据权利要求4所述的冷媒泄露检测方法，其中，所述降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度的步骤之后，还包括：
    控制所述空调器重启，并获取所述空调器的目标运行排气参数；
    在检测到所述目标运行排气参数超出预设冷媒泄露检测的参数范围时，控制所述空调器的压缩机停机，并输出冷媒泄露提示消息。
  6. 根据权利要求5所述的冷媒泄露检测方法，其中，所述获取所述空调器的目标运行排气参数的步骤之后，还包括：
    在检测到所述目标运行排气参数未超出预设冷媒泄露检测的参数范围时，降低所述空调器的压缩机的运行频率，并增大所述空调器的室外电子膨胀阀的开度。
  7. 根据权利要求3所述的冷媒泄露检测方法，其中，所述判定所述空调器存在一级冷媒泄露的步骤之后，还包括：
    控制所述空调器的压缩机停机，并输出冷媒泄露提示消息。
  8. 根据权利要求1至7任一项所述的冷媒泄露检测方法，其中，在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度的步骤，还包括：
    在空调器的排气温度大于预设排气温度时，对所述空调器的运行状态进行调整，并获取所述空调器以调整后的运行状态运行时的目标运行排气参数；
    在所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度。
  9. 一种冷媒泄露检测装置，其中，所述冷媒泄露检测装置包括：
    第一获取模块，用于在空调器的排气温度大于预设排气温度，并且所述空调器的目标运行排气参数超出预设冷媒泄露排气参数范围时，获取所述空调器在预设时间段内各时刻的排气温度；
    第一确定模块，用于根据各时刻的排气温度确定所述空调器的排气温度极值及所述排气温度极值对应的排气时刻；
    第二获取模块，用于根据所述排气时刻获取所述空调器的排气周期；
    第二确定模块，用于基于所述排气周期确定所述空调器是否存在冷媒泄露。
  10. 一种空调器，其中，所述空调器包括处理器，存储器以及存储在所述存储器中的冷媒泄露检测程序，所述冷媒泄露检测程序被所述处理器运行时，实现如权利要求1-8中任一项所述的冷媒泄露检测方法的步骤。
  11. 一种计算机存储介质，其中，所述计算机存储介质上存储有冷媒泄露检测程序，所述冷媒泄露检测程序被处理器运行时实现如权利要求1-8中任一项所述冷媒泄露检测方法的步骤。
PCT/CN2022/094504 2021-05-27 2022-05-23 冷媒泄露检测方法、装置、空调器及存储介质 Ceased WO2022247797A1 (zh)

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