WO2017190630A1 - Procédé et dispositif permettant de gérer une défaillance de robinet à quatre voies dans un climatiseur, et climatiseur - Google Patents

Procédé et dispositif permettant de gérer une défaillance de robinet à quatre voies dans un climatiseur, et climatiseur Download PDF

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Publication number
WO2017190630A1
WO2017190630A1 PCT/CN2017/082272 CN2017082272W WO2017190630A1 WO 2017190630 A1 WO2017190630 A1 WO 2017190630A1 CN 2017082272 W CN2017082272 W CN 2017082272W WO 2017190630 A1 WO2017190630 A1 WO 2017190630A1
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WIPO (PCT)
Prior art keywords
way valve
temperature
heat exchanger
air conditioner
mode
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Ceased
Application number
PCT/CN2017/082272
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English (en)
Chinese (zh)
Inventor
申孟亮
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
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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Publication of WO2017190630A1 publication Critical patent/WO2017190630A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F24F11/61—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F25B2700/2103—Temperatures near a heat exchanger
    • 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
    • F25B2700/2104—Temperatures of an indoor room or compartment

Definitions

  • the present invention relates to the field of air conditioning technology, and in particular to a method, a processing device and an air conditioner for treating a four-way valve failure in an air conditioner.
  • the existing cold and warm air conditioners are all switched by the four-way valve for mode switching, and the frequency of use is relatively high, but with the operation of the air conditioner, the air conditioner generates foreign matter, such as: compressor cylinder wear particles, system welding slag, etc.
  • foreign matter such as: compressor cylinder wear particles, system welding slag, etc.
  • most air conditioners are equipped with filters, filters, etc. for isolating foreign objects, some foreign objects cannot be isolated by the filter due to their special position or small diameter. Therefore, such foreign matter is extremely easy. Entering into the vent hole of the four-way valve piston causes the four-way valve to fail without reversing or incompletely reversing. At the same time, when the four-way valve does not change direction or does not completely reverse the fault, the air conditioner does not work normally, and the maintenance workload is very large.
  • the present invention aims to solve at least one of the technical problems existing in the prior art or related art.
  • Another object of the present invention is to provide a processing apparatus for a four-way valve failure in an air conditioner.
  • Still another object of the present invention is to provide a place including a four-way valve failure in the above air conditioner Air conditioner for the device.
  • the embodiment of the first aspect of the present invention provides a method for processing a four-way valve fault in an air conditioner, comprising: collecting a four-way valve commutation state signal; and collecting the four-way valve commutation state
  • a commutation control signal is sent to the four-way valve to cause the four-way valve to reverse.
  • the method for processing a four-way valve fault in the air conditioner provided by the embodiment of the first aspect of the present invention can collect the commutation state signal of the four-way valve, and send and exchange to the four-way valve after collecting the abnormal commutation state signal.
  • the control signal is used to reverse the four-way valve, so that the foreign matter in the leakage hole of the four-way valve piston can be removed by the reversal of the four-way valve slider, so that the four-way valve can be normally changed. to.
  • the technical solution collects the commutation state signal of the four-way valve, and can automatically repair the four-way valve in time when the four-way valve has a commutation abnormality.
  • the method for processing the four-way valve failure in the air conditioner can be used in combination with the detection method of the four-way valve failure in the air conditioner, so that the four-way valve failure detection method can be used to change whether the four-way valve is changed.
  • the fault is detected, and an abnormal commutation state signal is issued when the four-way valve has a commutation fault, so that the four-way valve fault processing method in the air conditioner can be based on the collected abnormal commutation state signal to the four-way The valve is repaired in time.
  • the sending a commutation control signal to the four-way valve, and the reversing the four-way valve is specifically: moving to the four-way valve at a preset frequency within a preset time
  • the power supply signal is intermittently transmitted to cause the four-way valve to perform multiple commutations; or the power supply signal is intermittently transmitted to the four-way valve to reverse the predetermined number of times.
  • the four-way valve can be reversed multiple times by sending an intermittent power supply signal to the four-way valve.
  • the total time and unit time of the transmitted electrical signal can be The frequency of the electrical signal is controlled, and the number of commutation of the solenoid valve is controlled. At this time, the number of commutation of the solenoid valve is equal to the product of the preset time and the preset frequency.
  • the number of commutation times of the solenoid valve can be directly controlled by setting the number of times of the transmitted electrical signal regardless of the total time of the transmitted electrical signal and the frequency of the electrical signal per unit time. The number of times is equal to the number of times the electrical signal is sent.
  • the method further includes: determining whether the four-way valve can normally reverse direction, If the four-way valve cannot be normally reversed, an alarm prompt is issued.
  • the four-way valve may be determined after intermittently transmitting the power supply signal to the four-way valve for the preset time or the four-way valve is reversed by a preset number of times. Whether it can be normally reversed, if the four-way valve cannot be reversed normally, an alarm will be given.
  • the air conditioner can also determine whether the four-way valve can be normally reversed, so that when the four-way valve can normally reverse direction , it can be judged that the foreign matter has been washed away, and thus the fault handling of the four-way valve can be ended.
  • the voice, sound, light and other alarm prompts can be issued to prompt the user to perform manual maintenance on the air conditioner, so that the air conditioner can automatically repair the four-way valve on the one hand when the four-way valve has a commutation fault, and On the one hand, the user can be notified in time after the automatic maintenance failure of the four-way valve by the air conditioner, so that the user can perform manual maintenance on it.
  • the method before the sending the commutation control signal to the four-way valve to reversing the four-way valve, the method further includes: determining whether the compressor is in an operating state, if the compression When the machine is in operation, the compressor is turned off.
  • the four-way valve before the four-way valve sends the commutation control signal, it can also detect whether the compressor is in the running state, so that when the compressor is in the running state, the compressor can be directly turned off, thereby reducing the four-way The resistance across the slider of the four-way valve when the valve is reversed.
  • the commutation control signal can be directly sent to the four-way valve without closing the compressor, that is, the four-way valve is directly powered and disconnected multiple times. Electrical control.
  • determining whether the four-way valve can normally reverse the direction specifically includes: setting an operation mode of the air conditioner to a preset working mode; detecting a temperature of the indoor heat exchanger and an indoor environment Temperature, and/or detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment; passing the temperature of the indoor heat exchanger and the indoor environment The difference in temperature, and/or the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is determined The actual operating mode of the air conditioner; determining whether the actual operating mode of the air conditioner matches the preset working mode, and if the actual operating mode of the air conditioner matches the preset working mode, determining the The four-way valve can be normally reversed. If the actual operating mode of the air conditioner does not match the preset working mode, it is determined that the four-way valve cannot
  • the actual operation of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment.
  • the specific process of the mode is: determining whether the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and a first preset temperature value, if the temperature of the indoor heat exchanger is greater than or equal to the indoor environment And determining, by the sum of the temperature and the first preset temperature value, that the actual operating mode of the air conditioner is not a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, and vice versa.
  • the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, the air conditioner
  • the actual operation mode of the device is matched with the preset operation mode; wherein the first preset temperature value is greater than or equal to a detection error value when detecting the temperature of the indoor heat exchanger.
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different specifically, cooling is performed in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, and the refrigerant in the refrigerant generates a cooling amount after evaporation and heat absorption, and the generated cold amount can only be transmitted to the room through heat transfer, and therefore, the indoor cooling capacity It is derived from the indoor heat exchanger, and according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the preset working mode is the cooling or dehumidification mode
  • the indoor heat exchanger is If the temperature is higher than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the preset operating mode is the cooling or dehumidification mode, if the temperature of the indoor heat exchanger is higher or Below the indoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the detection error when detecting the temperature of the indoor heat exchanger, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the set operating mode is the cooling or dehumidification mode.
  • the four-way valve can be normally reversed, only when the temperature of the indoor heat exchanger is higher than 1 °C and above, the four-way valve can still be normally reversed, thus avoiding the normal operation of the four-way valve. In the case of reversing, it is erroneously considered that the four-way valve still cannot be normally reversed.
  • the specific process of determining the actual operating mode of the air conditioner by determining the difference between the temperature of the inner heat exchanger and the temperature of the indoor environment is: determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the indoor environment and the second pre- a sum of temperature values, if the temperature of the indoor heat exchanger is less than or equal to a sum of a temperature of the indoor environment and the second preset temperature value, determining that the actual operating mode of the air conditioner is a non-heating mode That is, the actual operating mode of the air conditioner does not match the preset working mode, and if the temperature of the indoor heat exchanger is greater than the sum of the temperature of the indoor environment and the second preset temperature value,
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the second preset temperature value is greater than or equal to detecting the indoor heat exchange
  • the preset working mode when the preset working mode is the heating mode, the heat of the indoor environment is derived from the indoor heat exchanger, and therefore, the temperature of the indoor heat exchanger is necessarily higher than the temperature of the indoor environment, and therefore, the preset
  • the working mode is heating mode
  • the temperature of the indoor heat exchanger if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve is not reversible or Incompletely reversing, that is, the four-way valve still cannot be normally reversed, but the detection error when detecting the temperature of the indoor heat exchanger is also considered.
  • the preset working mode is heating
  • the indoor heat exchanger is The higher or lower the temperature
  • the lower the temperature of the indoor environment which does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the error of the temperature detection, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the conventional air conditioner, when the indoor heat exchanger is subjected to temperature sampling detection, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, it is judged whether the four-way valve can normally reverse When the temperature of the indoor heat exchanger is lower than 1 °C and above the indoor ambient temperature, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the mistake of thinking that the four-way valve can normally change direction. The four-way valve is still unable to change normally.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger.
  • the specific process is: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, and if the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, determining the The actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the actual operating mode of the air conditioner.
  • the formula does not match the preset working mode. If the temperature of the indoor heat exchanger is less than the temperature of the outdoor heat exchanger, it is determined that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, The actual operating mode of the air conditioner matches the preset operating mode.
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, in the air conditioner.
  • the indoor heat exchanger is an evaporator
  • the outdoor heat exchanger is a condenser, so that the refrigerant will continuously evaporate and absorb heat in the indoor heat exchanger and continuously condense heat in the outdoor heat exchanger.
  • the heat in the room is continuously released to the outside to achieve the purpose of cooling or dehumidification.
  • the temperature of the indoor heat exchanger when the air conditioner is cooled or dehumidified, the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, when the preset working mode is the cooling or dehumidification mode, If the temperature of the indoor heat exchanger is higher than or equal to the temperature of the outdoor heat exchanger, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and further It can be determined that the four-way valve still cannot be normally reversed.
  • the specific operation mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger.
  • the process is: determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, and determining the air conditioner if the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger.
  • the actual operation mode is a non-heating mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, it is determined
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, and then the heat is dissipated through the heat transfer to the heat exchanger.
  • the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the set operating mode is the heating mode
  • the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve can not normally reverse direction, and vice versa, when the temperature of the indoor heat exchanger is higher than the temperature of the outdoor heat exchanger, It can be explained that the four-way valve can be normally reversed, so the maintenance of the four-way valve can be ended.
  • the process of determining the actual operation mode of the air conditioner by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is specifically: determining whether the temperature of the outdoor heat exchanger is greater than or equal to the temperature of the outdoor environment and the third a sum of preset temperature values, if the temperature of the outdoor heat exchanger is greater than or equal to a sum of a temperature of the outdoor environment and the third preset temperature value, determining that the actual operating mode of the air conditioner is not cooling or pumping
  • the wet mode that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the third preset temperature value, Then determining that the actual operating mode of the air conditioner is a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the third preset temperature value is
  • the process of determining the fault of the four-way valve by using the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is different, specifically, cooling or dehumidifying in the air conditioner.
  • the outdoor heat exchanger is equivalent to a condenser
  • the heat of the indoor heat is dissipated into the outdoor environment by the condensation heat of the refrigerant, so that the air conditioner can be realized only when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment.
  • cooling or dehumidifying that is, when the air conditioner is cooled or dehumidified, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the outdoor heat exchanger is If the temperature is higher than or equal to the outdoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the outdoor heat exchanger, if the operating mode set by the user is cooling or dehumidification, if the outdoor heat exchanger is The higher the degree or the lower the outdoor ambient temperature, the difference in the four-way valve does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing Because of the temperature detection error, it is erroneously determined that the four-way valve still cannot be normally reversed.
  • the third preset temperature value is greater than or equal to 1 ° C.
  • the passing room determines that the actual operating mode of the air conditioner is specifically: determining whether the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor environment and the fourth preset temperature a sum of values, if the temperature of the outdoor heat exchanger is less than or equal to a sum of a temperature of the outdoor environment and the fourth preset temperature value, determining that the actual operating mode of the air conditioner is a non-heating mode, ie The actual operation mode of the air conditioner does not match the preset operation mode.
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the fourth preset temperature value is greater than or equal to detecting the outdoor heat exchanger Detection error value at temperature.
  • the outdoor heat exchanger continuously transfers heat to the indoor through the evaporation endothermic of the refrigerant, that is, the outdoor heat exchanger continuously draws heat from the outdoor environment. Therefore, the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment. Therefore, when the operating mode set by the user is the heating mode, if the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature, it is inevitable that the air conditioner The actual operation mode is not the heating mode, so that it can be determined that the four-way valve is not reversing or not completely reversing, that is, the four-way valve still cannot normally reverse, but the same is considered when detecting the temperature of the outdoor heat exchanger.
  • Detection error therefore, when the operating mode set by the user is heating, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the method for processing the four-way valve failure provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the four-way erroneously determined due to the temperature detection error. The situation is still not normal commutation takes place.
  • the fourth preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the existing air conditioner, when the temperature of the outdoor heat exchanger is detected, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, whether the four-way valve can be normally reversed During the judgment process, only when the temperature of the outdoor heat exchanger is lower than the outdoor ambient temperature by 1 ° C and more, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the error when the four-way valve can be normally reversed. It is believed that the four-way valve is still unable to change normally.
  • An embodiment of the second aspect of the present invention provides a processing device for a four-way valve failure in an air conditioner, comprising: an acquisition unit for collecting a four-way valve commutation state signal; and a processing unit for collecting the four-way When the valve reversing state signal is an abnormal signal, sending a commutation control signal to the four-way valve to make the four The valve is reversing.
  • the processing device for the four-way valve failure in the air conditioner can collect the commutation state signal of the four-way valve and send the abnormal state signal to the four-way valve after collecting the abnormal commutation state signal.
  • the commutation control signal is used to reversing the four-way valve, so that the foreign matter in the leakage hole of the four-way valve piston can be removed by the reversal of the four-way valve slider, thereby making the four-way valve normal Reversing.
  • the technical solution collects the commutation state signal of the four-way valve, and can automatically repair the four-way valve in time when the four-way valve has a commutation abnormality.
  • the processing device for the four-way valve failure in the air conditioner can be used in combination with the detection device for the four-way valve failure in the air conditioner, so that whether the four-way valve is replaced by the detection device of the four-way valve failure can be used.
  • the fault is detected, and an abnormal commutation state signal is issued when the four-way valve has a commutation fault, so that the four-way valve fault processing device in the air conditioner can perform the four-way according to the collected abnormal commutation state signal.
  • the valve is repaired in time.
  • the processing unit is configured to: intermittently send a power supply signal to the four-way valve at a preset frequency within a preset time, so that the four-way valve performs multiple commutations Or intermittently transmitting a power supply signal to the four-way valve to reverse the four-way valve a preset number of times.
  • the four-way valve can be reversed multiple times by sending an intermittent power supply signal to the four-way valve.
  • the total time and unit time of the transmitted electrical signal can be The frequency of the electrical signal is controlled, and the number of commutation of the solenoid valve is controlled. At this time, the number of commutation of the solenoid valve is equal to the product of the preset time and the preset frequency.
  • the number of commutation times of the solenoid valve can be directly controlled by setting the number of times of the transmitted electrical signal regardless of the total time of the transmitted electrical signal and the frequency of the electrical signal per unit time. The number of times is equal to the number of times the electrical signal is sent.
  • the processing unit is further configured to: after the reversing control signal is sent to the four-way valve, and the four-way valve is reversible, determine whether the four-way valve is It can be normally reversed. If the four-way valve cannot be reversed normally, an alarm will be given. Specifically, after the preset time of the power supply signal is intermittently sent to the four-way valve or the preset number of times of the four-way valve is reversed, it is determined whether the four-way valve can normally reverse direction, if If the four-way valve cannot be reversed normally, an alarm will be given.
  • the air conditioner can also determine whether the four-way valve can be normally reversed, so that when the four-way valve can normally reverse direction , it can be judged that the foreign matter has been washed away, and thus the fault handling of the four-way valve can be ended, and vice versa. If the four-way valve still cannot be normally reversed, it means that the foreign object cannot be washed away. Therefore, an alarm prompt such as voice, sound, light, etc.
  • the four-way valve can be issued to prompt the user to manually repair the air conditioner, thereby making the air conditioner,
  • the four-way valve can be automatically repaired when the four-way valve has a commutation fault.
  • the user can be notified in time after the air conditioner fails the automatic repair of the four-way valve, so that the user can manually repair it. .
  • the processing unit is further configured to: before the reversing control signal is sent to the four-way valve, to determine whether the compressor is in a running state before the four-way valve is reversing If the compressor is in an operating state, the compressor is turned off.
  • the compressor before the power supply and power failure of the four-way valve are performed, it is also possible to detect whether the compressor is in an operating state, so that when the pre-shrinking machine is running, the compressor can be directly turned off, thereby reducing four The resistance across the slider of the four-way valve when the valve is reversed.
  • the resistance of the slider when the four-way valve is reversed is not considered, the four-way valve can be directly powered and powered off without shutting down the compressor.
  • the processing unit specifically includes: a setting unit, configured to set an operation mode of the air conditioner to a preset working mode; and a detecting unit configured to detect an indoor heat exchanger temperature and indoor The temperature of the environment, and/or for detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or for detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment; determining unit for The difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment, and/or the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or the temperature of the outdoor heat exchanger Determining an actual operating mode of the air conditioner with a difference between the temperature of the outdoor environment; determining, by the determining unit, whether the actual operating mode of the air conditioner matches the preset working mode, and in actualizing the air conditioner When the operation mode matches the preset operation mode, determining that the four-way valve can normally reverse direction, and determining that the four-way valve is not
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment determining whether the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and a first preset temperature value, if the temperature of the indoor heat exchanger is greater than or equal to a temperature and a temperature of the indoor environment Determining the sum of the first preset temperature values, determining that the actual operating mode of the air conditioner is not a cold or dehumidification mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is less than the temperature of the indoor environment and the first preset a sum of the temperature values, determining that the actual operating mode of the air conditioner is a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner matches the preset working mode;
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different specifically, cooling is performed in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, and the refrigerant in the refrigerant generates a cooling amount after evaporation and heat absorption, and the generated cold amount can only be transmitted to the room through heat transfer, and therefore, the indoor cooling capacity It is derived from the indoor heat exchanger, and according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the preset working mode is the cooling or dehumidification mode
  • the indoor heat exchanger is If the temperature is higher than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the preset operating mode is the cooling or dehumidification mode, if the temperature of the indoor heat exchanger is higher or Below the indoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the detection error when detecting the temperature of the indoor heat exchanger, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the set operating mode is the cooling or dehumidification mode.
  • the four-way valve can be normally reversed, only when the temperature of the indoor heat exchanger is higher than 1 °C and above, the four-way valve can still be normally reversed, thus avoiding the normal operation of the four-way valve. In the case of reversing, it is erroneously considered that the four-way valve still cannot be normally reversed.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment: Whether the temperature of the indoor heat exchanger is less than or equal to the sum of the temperature of the indoor environment and the second preset temperature value, if the temperature of the indoor heat exchanger is less than or equal to the temperature of the indoor environment and the second pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, The actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is greater than the sum of the temperature of the indoor environment and the second preset temperature value, determining the air conditioner
  • the actual operating mode of the device is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the second preset temperature value is greater than or equal to detecting the temperature of the indoor heat exchanger Time detection error value.
  • the preset working mode when the preset working mode is the heating mode, the heat of the indoor environment is derived from the indoor heat exchanger, and therefore, the temperature of the indoor heat exchanger is necessarily higher than the temperature of the indoor environment, and therefore, the preset
  • the working mode is heating mode
  • the temperature of the indoor heat exchanger if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve is not reversible or Incompletely reversing, that is, the four-way valve still cannot be normally reversed, but the detection error when detecting the temperature of the indoor heat exchanger is also considered.
  • the preset working mode is heating
  • the indoor heat exchanger is The higher or lower the temperature
  • the lower the temperature of the indoor environment which does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the error of the temperature detection, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the conventional air conditioner, when the indoor heat exchanger is subjected to temperature sampling detection, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, it is judged whether the four-way valve can normally reverse When the temperature of the indoor heat exchanger is lower than 1 °C and above the indoor ambient temperature, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the mistake of thinking that the four-way valve can normally change direction. The four-way valve is still unable to change normally.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger.
  • the process is specifically: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, and if the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, determining The actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, and if the temperature of the indoor heat exchanger is less than the outdoor heat exchange
  • the temperature of the device determines that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, the actual operating mode of the air conditioner matches the preset operating mode.
  • the temperature and the room in the indoor heat exchanger are utilized.
  • the process of determining the normal commutation of the four-way valve is different when the temperature of the outer heat exchanger is different.
  • the indoor heat exchanger is an evaporator
  • the outdoor heat exchanger is a condenser. Therefore, the heat of the indoor heat is continuously released to the outside through the continuous evaporation and heat absorption of the refrigerant in the indoor heat exchanger and the continuous condensation in the outdoor heat exchanger, thereby achieving the purpose of cooling or dehumidification.
  • the temperature of the indoor heat exchanger when the air conditioner is cooled or dehumidified, the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, when the preset working mode is the cooling or dehumidification mode, If the temperature of the indoor heat exchanger is higher than or equal to the temperature of the outdoor heat exchanger, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and further It can be determined that the four-way valve still cannot be normally reversed.
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger Specifically, determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, and determining the air conditioner if the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger.
  • the actual operation mode is a non-heating mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, it is determined
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, and then the heat is dissipated through the heat transfer to the heat exchanger.
  • the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the set operating mode is the heating mode
  • the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve can not normally reverse direction, and vice versa, when the temperature of the indoor heat exchanger is higher than the temperature of the outdoor heat exchanger, It can be explained that the four-way valve can be normally reversed, so the maintenance of the four-way valve can be ended.
  • the process of determining the actual operation mode of the air conditioner by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment determining whether the temperature of the outdoor heat exchanger is greater than or equal to a sum of a temperature of the outdoor environment and a third preset temperature value, if the temperature of the outdoor heat exchanger is greater than or equal to a temperature and a temperature of the outdoor environment Determining the sum of the third preset temperature values, determining that the actual operating mode of the air conditioner is not a cold or dehumidification mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, if the temperature of the outdoor heat exchanger is less than the temperature of the outdoor environment and the third preset temperature value And determining that the actual operating mode of the air conditioner is a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the third preset
  • the process of determining the fault of the four-way valve by using the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is different, specifically, cooling or dehumidifying in the air conditioner.
  • the outdoor heat exchanger is equivalent to a condenser
  • the heat of the indoor heat is dissipated into the outdoor environment by the condensation heat of the refrigerant, so that the air conditioner can be realized only when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment.
  • cooling or dehumidifying that is, when the air conditioner is cooled or dehumidified, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the outdoor heat exchanger is If the temperature is higher than or equal to the outdoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the outdoor heat exchanger, if the operating mode set by the user is cooling or dehumidification, if the outdoor heat exchanger is The higher the degree or the lower the outdoor ambient temperature, the difference in the four-way valve does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing Because of the temperature detection error, it is erroneously determined that the four-way valve still cannot be normally reversed.
  • the third preset temperature value is greater than or equal to 1 ° C.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment: Whether the temperature of the outdoor heat exchanger is less than or equal to the sum of the temperature of the outdoor environment and the fourth preset temperature value, if the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor environment and the fourth pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, The actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the outdoor heat exchanger is greater than the sum of the temperature of the outdoor environment and the fourth preset temperature value, determining the air conditioner
  • the actual operating mode of the device is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the fourth preset temperature value is greater than or equal to detecting the temperature of the indoor heat exchanger Time detection error value.
  • the outdoor heat exchanger continuously transfers heat to the indoor through the evaporation endothermic of the refrigerant, that is, the outdoor heat exchanger continuously draws heat from the outdoor environment. Therefore, the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment. Therefore, when the operating mode set by the user is the heating mode, if the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature, it is inevitable that the air conditioner The actual operation mode is not the heating mode, so that it can be determined that the four-way valve is not reversing or not completely reversing, that is, the four-way valve still cannot normally reverse, but the same is considered when detecting the temperature of the outdoor heat exchanger.
  • Detection error therefore, when the operating mode set by the user is heating, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the method for processing the four-way valve failure provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the four-way erroneously determined due to the temperature detection error. The situation is still not normal commutation takes place.
  • the fourth preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the existing air conditioner, when the temperature of the outdoor heat exchanger is detected, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, whether the four-way valve can be normally reversed During the judgment process, only when the temperature of the outdoor heat exchanger is lower than the outdoor ambient temperature by 1 ° C and more, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the error when the four-way valve can be normally reversed. It is believed that the four-way valve is still unable to change normally.
  • An embodiment of the third aspect of the present invention provides an air conditioner comprising the four-way valve failure processing device in the air conditioner according to any one of the second aspects.
  • An air conditioner according to an embodiment of the present invention includes the apparatus for processing a four-way valve failure in the air conditioner according to any one of the second aspect, and thus has the method described in any one of the second aspect.
  • the beneficial effects of the treatment device for the four-way valve failure in the air conditioner will not be described herein.
  • FIG. 1 is a flow chart showing a method of processing a four-way valve failure in an air conditioner according to an embodiment of the present invention
  • FIG. 2 is a schematic flow chart showing another method of processing a four-way valve failure in an air conditioner according to an embodiment of the present invention
  • Figure 3a is a block diagram showing the structure of a four-way valve fault processing apparatus in an air conditioner according to an embodiment of the present invention
  • Figure 3b is a schematic block diagram showing the structure of the processing unit of the four-way valve fault processing apparatus in the air conditioner described in Figure 3a;
  • FIG. 4 is a schematic block diagram showing the structure of an air conditioner according to an embodiment of the present invention.
  • FIG. 5 is a flow chart showing a method of processing a four-way valve failure in an air conditioner according to still another embodiment of the present invention.
  • an embodiment of the first aspect of the present invention provides a method for processing a four-way valve fault in an air conditioner, comprising: step 102, collecting a four-way valve commutation state signal; and step 104, collecting the When the four-way valve commutation state signal is an abnormal signal, a commutation control signal is sent to the four-way valve to cause the four-way valve to reverse.
  • the method for processing a four-way valve fault in the air conditioner provided by the embodiment of the first aspect of the present invention can collect the commutation state signal of the four-way valve, and send and exchange to the four-way valve after collecting the abnormal commutation state signal.
  • the control signal is used to reverse the four-way valve, so that the foreign matter in the leakage hole of the four-way valve piston can be removed by the reversal of the four-way valve slider, so that the four-way valve can be normally changed. to.
  • the technical solution collects the commutation state signal of the four-way valve, and can automatically repair the four-way valve in time when the four-way valve has a commutation abnormality.
  • the method for processing the four-way valve failure in the air conditioner can be used in combination with the detection method of the four-way valve failure in the air conditioner, so that the four-way valve failure detection method can be used to change whether the four-way valve is changed.
  • the fault is detected, and an abnormal commutation state signal is issued when the four-way valve has a commutation fault, so that the four-way valve fault processing method in the air conditioner can be based on the collected abnormal commutation state signal to the four-way The valve is repaired in time.
  • the sending a commutation control signal to the four-way valve, and the reversing the four-way valve is specifically: moving to the four-way valve at a preset frequency within a preset time
  • the power supply signal is intermittently transmitted to cause the four-way valve to perform multiple commutations; or the power supply signal is intermittently transmitted to the four-way valve to reverse the predetermined number of times.
  • the four-way valve can be reversed multiple times by sending an intermittent power supply signal to the four-way valve.
  • the total time and unit time of the transmitted electrical signal can be The frequency of the electrical signal is controlled, and the number of commutation of the solenoid valve is controlled. At this time, the number of commutation of the solenoid valve is equal to the product of the preset time and the preset frequency.
  • the number of commutation times of the solenoid valve can be directly controlled by setting the number of times of the transmitted electrical signal regardless of the total time of the transmitted electrical signal and the frequency of the electrical signal per unit time. The number of times is equal to the number of times the electrical signal is sent.
  • the method for processing a four-way valve fault in the air conditioner includes: step 202, collecting a four-way valve commutation state signal; and step 204, collecting the four-way
  • the valve reversing state signal is an abnormal signal, determining whether the compressor is in an operating state, if the compressor is in an operating state, turning off the compressor; and step 206, to the fourth frequency at a preset frequency within a preset time
  • the valve is intermittently sent with a power supply signal to cause the four-way valve to perform multiple commutations; or the power supply signal is intermittently transmitted to the four-way valve to cause the four-way valve to be reversed to a preset number of times; After intermittently transmitting the power supply signal to the four-way valve for the preset time or the four-way valve is reversed for a preset number of times, determining whether the four-way valve can normally reverse direction, if the four-way valve cannot If the switch is normal, an alarm will be given.
  • step 204 before the four-way valve sends the commutation control signal, it can also detect whether the compressor is in the running state, so that when the compressor is running, the compressor can be directly turned off, thereby reducing the four-way valve reversal The resistance of the four ends of the slider of the four-way valve.
  • the commutation control signal can be directly sent to the four-way valve without closing the compressor, that is, the four-way valve is directly powered and disconnected multiple times. Electrical control.
  • the air conditioner can also determine whether the four-way valve can be normally reversed, so that when the four-way valve can normally reverse direction, It can be judged that the foreign matter has been washed away, so that the fault handling of the four-way valve can be ended.
  • the air conditioner can automatically repair the four-way valve on the one hand when the four-way valve has a commutation fault, and the other
  • the user can be notified in time after the automatic repair of the four-way valve by the air conditioner fails, so that the user can perform manual maintenance.
  • determining whether the four-way valve can normally reverse the direction specifically includes: setting an operation mode of the air conditioner to a preset working mode; detecting a temperature of the indoor heat exchanger and an indoor environment Temperature, and/or detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment; passing the temperature of the indoor heat exchanger and the indoor environment The difference in temperature, and/or the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is determined The actual operating mode of the air conditioner; determining whether the actual operating mode of the air conditioner matches the preset working mode, and if the actual operating mode of the air conditioner matches the preset working mode, determining the The four-way valve can be normally reversed. If the actual operating mode of the air conditioner does not match the preset working mode, it is determined that the four-way valve cannot
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment determining whether the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and a first preset temperature value, if the temperature of the indoor heat exchanger is greater than or equal to a temperature and a temperature of the indoor environment Determining the sum of the first preset temperature values, determining that the actual operating mode of the air conditioner is not a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, If the temperature of the indoor heat exchanger is less than the sum of the temperature of the indoor environment and the first preset temperature value, determining that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, The actual operating mode of the air conditioner is matched with the preset working mode;
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different specifically, cooling is performed in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, and the refrigerant in the refrigerant generates a cooling amount after evaporation and heat absorption, and the generated cold amount can only be transmitted to the room through heat transfer, and therefore, the indoor cooling capacity It is derived from the indoor heat exchanger, and according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the preset working mode is the cooling or dehumidification mode
  • the indoor heat exchanger is If the temperature is higher than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the preset operating mode is the cooling or dehumidification mode, if the temperature of the indoor heat exchanger is higher or Below the indoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the detection error when detecting the temperature of the indoor heat exchanger, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the four-way is judged.
  • the valve can be normally reversed, only when the temperature of the indoor heat exchanger is higher than 1 °C and above, the four-way valve can still be normally reversed, so that the four-way valve can be normally reversed. At the time, it is wrong to assume that the four-way valve still cannot be normally reversed.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment: Whether the temperature of the indoor heat exchanger is less than or equal to the sum of the temperature of the indoor environment and the second preset temperature value, if the temperature of the indoor heat exchanger is less than or equal to the temperature of the indoor environment and the second pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if the temperature of the indoor heat exchanger If the degree is greater than the sum of the temperature of the indoor environment and the second preset temperature value, determining that the actual operating mode of the air conditioner is a heating mode, that is, an actual operating mode of the air conditioner and the preset operation The modes are matched; wherein the second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the
  • the preset working mode when the preset working mode is the heating mode, the heat of the indoor environment is derived from the indoor heat exchanger, and therefore, the temperature of the indoor heat exchanger is necessarily higher than the temperature of the indoor environment, and therefore, the preset
  • the working mode is heating mode
  • the temperature of the indoor heat exchanger if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve is not reversible or Incompletely reversing, that is, the four-way valve still cannot be normally reversed, but the detection error when detecting the temperature of the indoor heat exchanger is also considered.
  • the preset working mode is heating
  • the indoor heat exchanger is The higher or lower the temperature
  • the lower the temperature of the indoor environment which does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the error of the temperature detection, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the conventional air conditioner, when the indoor heat exchanger is subjected to temperature sampling detection, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, it is judged whether the four-way valve can normally reverse When the temperature of the indoor heat exchanger is lower than 1 °C and above the indoor ambient temperature, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the mistake of thinking that the four-way valve can normally change direction. The four-way valve is still unable to change normally.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger.
  • the process is specifically: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, and if the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, determining The actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, and if the temperature of the indoor heat exchanger is less than the outdoor heat exchange
  • the temperature of the device determines that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, the actual operating mode of the air conditioner matches the preset operating mode.
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, in the air conditioner.
  • the indoor heat exchanger is an evaporator
  • the outdoor heat exchanger is a condenser, so that the refrigerant will continuously evaporate and absorb heat in the indoor heat exchanger and continuously condense heat in the outdoor heat exchanger.
  • the heat in the room is continuously released to the outside to achieve the purpose of cooling or dehumidification.
  • the temperature of the indoor heat exchanger when the air conditioner is cooled or dehumidified, the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, when the preset working mode is the cooling or dehumidification mode, If the temperature of the indoor heat exchanger is higher than or equal to the temperature of the outdoor heat exchanger, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and further It can be determined that the four-way valve still cannot be normally reversed.
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger Specifically, determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, and determining the air conditioner if the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger.
  • the actual operation mode is a non-heating mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, it is determined
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, and then the heat is dissipated through the heat transfer to the heat exchanger.
  • the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the set operating mode is the heating mode
  • the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve can not normally reverse direction, and vice versa, when the temperature of the indoor heat exchanger is higher than the temperature of the outdoor heat exchanger, It can be explained that the four-way valve can be normally reversed, so the maintenance of the four-way valve can be ended.
  • the process of determining the actual operation mode of the air conditioner by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment determining whether the temperature of the outdoor heat exchanger is greater than or equal to a sum of a temperature of the outdoor environment and a third preset temperature value, if the temperature of the outdoor heat exchanger is greater than or equal to a temperature and a temperature of the outdoor environment Determining the sum of the third preset temperature values, determining that the actual operating mode of the air conditioner is not a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if If the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the third preset temperature value, determining that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, the air conditioner The actual operation mode is matched with the preset operation mode;
  • the process of determining the fault of the four-way valve by using the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is different, specifically, cooling or dehumidifying in the air conditioner.
  • the outdoor heat exchanger is equivalent to a condenser
  • the heat of the indoor heat is dissipated into the outdoor environment by the condensation heat of the refrigerant, so that the air conditioner can be realized only when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment.
  • cooling or dehumidifying that is, when the air conditioner is cooled or dehumidified, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the outdoor heat exchanger is If the temperature is higher than or equal to the outdoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the outdoor heat exchanger, if the operating mode set by the user is cooling or dehumidification, if the outdoor heat exchanger is The higher the degree or the lower the outdoor ambient temperature, the difference in the four-way valve does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing Because of the temperature detection error, it is erroneously determined that the four-way valve still cannot be normally reversed.
  • the third preset temperature value is greater than or equal to 1 ° C.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment: Whether the temperature of the outdoor heat exchanger is less than or equal to the sum of the temperature of the outdoor environment and the fourth preset temperature value, if the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor environment and the fourth pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if the temperature of the outdoor heat exchanger If the degree is greater than the sum of the temperature of the outdoor environment and the fourth preset temperature value, determining that the actual operating mode of the air conditioner is a heating mode, that is, an actual operating mode of the air conditioner and the preset operation The modes are matched; wherein the fourth preset temperature value is greater than or equal to a detection error value when detecting the temperature of the
  • the outdoor heat exchanger continuously transfers heat to the indoor through the evaporation endothermic of the refrigerant, that is, the outdoor heat exchanger continuously draws heat from the outdoor environment. Therefore, the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment. Therefore, when the operating mode set by the user is the heating mode, if the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature, it is inevitable that the air conditioner The actual operation mode is not the heating mode, so that it can be determined that the four-way valve is not reversing or not completely reversing, that is, the four-way valve still cannot normally reverse, but the same is considered when detecting the temperature of the outdoor heat exchanger.
  • Detection error therefore, when the operating mode set by the user is heating, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the method for processing the four-way valve failure provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the four-way erroneously determined due to the temperature detection error. The situation is still not normal commutation takes place.
  • the fourth preset temperature value is greater than or equal to 1 ° C.
  • Figure 3a shows a block schematic diagram of a processing apparatus 300 for a four-way valve failure in an air conditioner in accordance with one embodiment of the present invention.
  • the embodiment of the second aspect of the present invention provides a four-way valve fault processing device 300 in an air conditioner, as shown in FIG. 3a, comprising: an acquisition unit 310 for collecting a four-way valve commutation state signal; and a processing unit 320 And when the collected four-way valve reversing state signal is an abnormal signal, sending a reversing control signal to the four-way valve to cause the four-way valve to reverse.
  • the processing device 300 for the four-way valve failure in the air conditioner can collect the commutation state signal of the four-way valve, and after collecting the abnormal commutation state signal Sending a reversing control signal to the four-way valve to reversing the four-way valve, thereby reversing the foreign matter in the vent hole of the four-way valve piston through the reversal of the four-way valve slider, thereby The four-way valve can be normally reversed.
  • the technical solution collects the commutation state signal of the four-way valve, and can automatically repair the four-way valve in time when the four-way valve has a commutation abnormality.
  • the processing device 300 for the four-way valve failure in the air conditioner can be used in combination with the detecting device for the four-way valve failure in the air conditioner, so that whether the detecting device of the four-way valve failure can be used for the presence of the four-way valve The commutation fault is detected, and an abnormal commutation state signal is issued when the four-way valve has a commutation fault, so that the four-way valve fault processing device in the air conditioner can be based on the collected abnormal commutation state signal to the fourth The valve is repaired in time.
  • the processing unit 320 is specifically configured to: intermittently send a power supply signal to the four-way valve at a preset frequency within a preset time, so that the four-way valve performs a commutation; Or intermittently transmitting a power supply signal to the four-way valve to reverse the four-way valve a preset number of times.
  • the four-way valve can be reversed multiple times by sending an intermittent power supply signal to the four-way valve.
  • the total time and unit time of the transmitted electrical signal can be The frequency of the electrical signal is controlled, and the number of commutation of the solenoid valve is controlled. At this time, the number of commutation of the solenoid valve is equal to the product of the preset time and the preset frequency.
  • the number of commutation times of the solenoid valve can be directly controlled by setting the number of times of the transmitted electrical signal regardless of the total time of the transmitted electrical signal and the frequency of the electrical signal per unit time. The number of times is equal to the number of times the electrical signal is sent.
  • the processing unit 320 is further configured to: after the reversing control signal is sent to the four-way valve, the four-way valve is reversible, and the four-way valve is determined Whether it can be normally reversed, if the four-way valve cannot be normally reversed, an alarm will be given. Specifically, after the preset time of the power supply signal is intermittently sent to the four-way valve or the preset number of times of the four-way valve is reversed, it is determined whether the four-way valve can normally reverse direction, if If the four-way valve cannot be reversed normally, an alarm will be given.
  • the air conditioner can also determine whether the four-way valve can be normally reversed, so that when the four-way valve can normally reverse direction , it can be judged that the foreign matter has been washed away, and thus the fault handling of the four-way valve can be ended. Conversely, if the four-way valve still cannot be normally reversed, the foreign matter cannot be washed away, therefore, An alarm prompt such as voice, sound, light, etc. can be issued to prompt the user to manually repair the air conditioner, thereby making the space
  • the regulator can automatically repair the four-way valve when the four-way valve has a commutation fault.
  • the user can notify the user in time after the automatic repair failure of the four-way valve by the air conditioner, so that the user can Perform manual repairs.
  • the processing unit 320 is further configured to: determine whether the compressor is in operation before sending the commutation control signal to the four-way valve to reversing the four-way valve State, if the compressor is in an operational state, the compressor is turned off.
  • the compressor before the power supply and power failure of the four-way valve are performed, it is also possible to detect whether the compressor is in an operating state, so that when the pre-shrinking machine is running, the compressor can be directly turned off, thereby reducing four The resistance across the slider of the four-way valve when the valve is reversed.
  • the resistance of the slider when the four-way valve is reversed is not considered, the four-way valve can be directly powered and powered off without shutting down the compressor.
  • the processing unit 320 specifically includes: a setting unit 322, configured to set an operation mode of the air conditioner to a preset working mode; and a detecting unit 324, configured to: Detecting the temperature of the indoor heat exchanger and the temperature of the indoor environment, and/or detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, and/or detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment a determining unit 326, configured to determine a difference between a temperature of the indoor heat exchanger and a temperature of the indoor environment, and/or a difference between a temperature of the indoor heat exchanger and a temperature of the outdoor heat exchanger, and The difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment determines an actual operating mode of the air conditioner; the determining unit 328 determines an actual operating mode of the air conditioner and the preset working mode Whether it is matched, and when the actual operating mode of the air conditioner matches the prese
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment determining whether the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and a first preset temperature value, if the temperature of the indoor heat exchanger is greater than or equal to a temperature and a temperature of the indoor environment Determining the sum of the first preset temperature values, determining that the actual operating mode of the air conditioner is not a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner does not match the preset working mode; The temperature of the indoor heat exchanger is smaller than the temperature of the indoor environment and the first preset temperature value And determining that the actual operating mode of the air conditioner is a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the first preset temperature value
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different specifically, cooling is performed in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, and the refrigerant in the refrigerant generates a cooling amount after evaporation and heat absorption, and the generated cold amount can only be transmitted to the room through heat transfer, and therefore, the indoor cooling capacity It is derived from the indoor heat exchanger, and according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the preset working mode is the cooling or dehumidification mode
  • the indoor heat exchanger is If the temperature is higher than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the preset operating mode is the cooling or dehumidification mode, if the temperature of the indoor heat exchanger is higher or Below the indoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the detection error when detecting the temperature of the indoor heat exchanger, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the four-way is judged.
  • the valve can be normally reversed, only when the temperature of the indoor heat exchanger is higher than 1 °C and above, the four-way valve can still be normally reversed, so that the four-way valve can be normally reversed. At the time, it is wrong to assume that the four-way valve still cannot be normally reversed.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment: Whether the temperature of the indoor heat exchanger is less than or equal to the sum of the temperature of the indoor environment and the second preset temperature value, if the temperature of the indoor heat exchanger is less than or equal to the temperature of the indoor environment and the second pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if the temperature of the indoor heat exchanger Determining the sum of the temperature of the indoor environment and the second preset temperature value, determining the air conditioner
  • the actual operating mode is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the second preset temperature value is greater than or equal to detecting the temperature of the indoor heat exchanger The error value is detected.
  • the preset working mode when the preset working mode is the heating mode, the heat of the indoor environment is derived from the indoor heat exchanger, and therefore, the temperature of the indoor heat exchanger is necessarily higher than the temperature of the indoor environment, and therefore, the preset
  • the working mode is heating mode
  • the temperature of the indoor heat exchanger if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve is not reversible or Incompletely reversing, that is, the four-way valve still cannot be normally reversed, but the detection error when detecting the temperature of the indoor heat exchanger is also considered.
  • the preset working mode is heating
  • the indoor heat exchanger is The higher or lower the temperature
  • the lower the temperature of the indoor environment which does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately considers the error of the temperature detection, thereby preventing the temperature detection error. It is wrong to judge that the four-way valve still cannot normally change direction.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the four-way valve in the conventional air conditioner, when the indoor heat exchanger is subjected to temperature sampling detection, there is generally a positive or negative deviation of 1 ° C. Therefore, in the heating mode, it is judged whether the four-way valve can normally reverse When the temperature of the indoor heat exchanger is lower than 1 °C and above the indoor ambient temperature, it can be said that the four-way valve still cannot be normally reversed, thereby avoiding the mistake of thinking that the four-way valve can normally change direction. The four-way valve is still unable to change normally.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger.
  • the process is specifically: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, and if the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, determining The actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, and if the temperature of the indoor heat exchanger is less than the outdoor heat exchange
  • the temperature of the device determines that the actual operating mode of the air conditioner is a cooling or dehumidification mode, that is, the actual operating mode of the air conditioner matches the preset operating mode.
  • the process of determining whether the four-way valve can be normally reversed by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, in the air conditioner.
  • the indoor heat exchanger is an evaporator
  • the outdoor heat exchanger is a condenser, thereby passing cold
  • the medium evaporates and absorbs heat in the indoor heat exchanger and condenses and dissipates heat in the outdoor heat exchanger to continuously dissipate the heat in the room to the outside, thereby achieving the purpose of cooling or dehumidification.
  • the temperature of the indoor heat exchanger when the air conditioner is cooled or dehumidified, the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, when the preset working mode is the cooling or dehumidification mode, If the temperature of the indoor heat exchanger is higher than or equal to the temperature of the outdoor heat exchanger, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and further It can be determined that the four-way valve still cannot be normally reversed.
  • the process of determining the actual operating mode of the air conditioner by the difference between the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger Specifically, determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, and determining the air conditioner if the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger.
  • the actual operation mode is a non-heating mode, that is, the actual operation mode of the air conditioner does not match the preset operation mode, and if the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, it is determined
  • the actual operating mode of the air conditioner is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, and then the heat is dissipated through the heat transfer to the heat exchanger.
  • the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the set operating mode is the heating mode
  • the actual operating mode of the air conditioner is not the heating mode, so that the four-way valve can not normally reverse direction, and vice versa, when the temperature of the indoor heat exchanger is higher than the temperature of the outdoor heat exchanger, It can be explained that the four-way valve can be normally reversed, so the maintenance of the four-way valve can be ended.
  • the process of determining the actual operation mode of the air conditioner by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment determining whether the temperature of the outdoor heat exchanger is greater than or equal to a sum of a temperature of the outdoor environment and a third preset temperature value, if the temperature of the outdoor heat exchanger is greater than or equal to a temperature and a temperature of the outdoor environment Determining the sum of the third preset temperature values, determining that the actual operating mode of the air conditioner is not a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if the outdoor The temperature of the heat exchanger is less than the sum of the temperature of the outdoor environment and the third preset temperature value, Then determining that the actual operating mode of the air conditioner is a cooling or dehumidifying mode, that is, the actual operating mode of the air conditioner matches the preset working mode;
  • the process of determining the fault of the four-way valve by using the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is different, specifically, cooling or dehumidifying in the air conditioner.
  • the outdoor heat exchanger is equivalent to a condenser
  • the heat of the indoor heat is dissipated into the outdoor environment by the condensation heat of the refrigerant, so that the air conditioner can be realized only when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment.
  • cooling or dehumidifying that is, when the air conditioner is cooled or dehumidified, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the outdoor heat exchanger is If the temperature is higher than or equal to the outdoor ambient temperature, it is inevitable that the actual operating mode of the air conditioner is not the cooling or dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way valve can be determined. It is not possible to change normally, but considering the detection error when detecting the temperature of the outdoor heat exchanger, if the operating mode set by the user is cooling or dehumidification, if the outdoor heat exchanger is The higher the degree or the lower the outdoor ambient temperature, the difference in the four-way valve does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing Because of the temperature detection error, it is erroneously determined that the four-way valve still cannot be normally reversed.
  • the third preset temperature value is greater than or equal to 1 ° C.
  • the actual operating mode of the air conditioner is determined by the difference between the temperature of the outdoor heat exchanger and the temperature of the outdoor environment: Whether the temperature of the outdoor heat exchanger is less than or equal to the sum of the temperature of the outdoor environment and the fourth preset temperature value, if the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor environment and the fourth pre- Setting the sum of the temperature values, determining that the actual operating mode of the air conditioner is a non-heating mode, that is, the actual operating mode of the air conditioner does not match the preset working mode, if the temperature of the outdoor heat exchanger Determining the sum of the temperature of the outdoor environment and the fourth preset temperature value, determining the air conditioner
  • the actual operating mode is a heating mode, that is, the actual operating mode of the air conditioner matches the preset working mode; wherein the fourth preset temperature value is greater than or equal to detecting the temperature of the outdoor heat exchanger The error value is detected.
  • the outdoor heat exchanger continuously transfers heat to the indoor through the evaporation endothermic of the refrigerant, that is, the outdoor heat exchanger continuously draws heat from the outdoor environment. Therefore, the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment. Therefore, when the operating mode set by the user is the heating mode, if the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature, it is inevitable that the air conditioner The actual operation mode is not the heating mode, so that it can be determined that the four-way valve is not reversing or not completely reversing, that is, the four-way valve still cannot normally reverse, but the same is considered when detecting the temperature of the outdoor heat exchanger.
  • Detection error therefore, when the operating mode set by the user is heating, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, it does not necessarily indicate that the four-way valve cannot be normally reversed. Therefore, the method for processing the four-way valve failure provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the four-way erroneously determined due to the temperature detection error. The situation is still not normal commutation takes place.
  • the fourth preset temperature value is greater than or equal to 1 ° C.
  • an embodiment of the third aspect of the present invention provides an air conditioner 400, which includes a four-way valve failure processing device 300 in an air conditioner according to any one of the second aspects.
  • the air conditioner 400 according to the embodiment of the third aspect of the present invention includes the four-way valve failure processing device 300 in the air conditioner according to any one of the second aspect, and thus has any one of the second aspects.
  • the beneficial effects of the processing device for the four-way valve failure in the air conditioner will not be described herein.
  • Step 501 collecting a four-way valve commutation state signal
  • Step 502 collecting When the four-way valve reversing state signal is an abnormal signal, determining whether the compressor is in an operating state, if the compressor is in an operating state, turning off the compressor; step 503,
  • the power supply signal is intermittently transmitted to the four-way valve at a preset frequency for a preset time, so that the four-way valve performs multiple commutations; or the collected four-way valve commutation state signal is abnormal
  • the power supply signal is intermittently sent to the four-way valve, and the four-way valve is reversed to a preset number of times
  • step 504 the power supply signal is intermittently sent to the four-way valve for the preset time or After the four-way valve is reversed for a preset number of times, the working mode of the air conditioner is set
  • the first preset temperature value a and the second preset temperature value b may be selected to be 1 ° C, and when the preset working mode is the heating mode, if the indoor environment is detected
  • the temperature T1 is 15 °C
  • the temperature T2 of the indoor heat exchanger is 15.5 °C, that is, T2 ⁇ T1+1°C. It is considered that the four-way valve still cannot be normally reversed (in this case, the temperature difference of 0.5 degrees Celsius may be the sampling deviation of the system).
  • the temperature T2 of the indoor heat exchanger is greater than the indoor ambient temperature T1
  • the four-way valve cannot be normally reversed, because if the four-way valve can be normally reversed, the temperature of the indoor heat exchanger should be far It is far greater than the indoor ambient temperature. It can be explained that after multiple power supply and power failure, the four-way valve can not be solved for the commutation fault after multiple times of reversing. At this time, it can be directly carried out. Alarm prompts to promptly notify the user to perform manual repairs on the four-way valve.
  • the preset working mode is the heating mode
  • the indoor ambient temperature T1 is 15 ° C and the indoor heat exchanger temperature T2 is 20 ° C, that is, T2>T1+1°C, it is considered that the four-way valve can Normal commutation, thus ending the failure process of the four-way valve.
  • the description of the terms “one embodiment”, “some embodiments”, “specific embodiments” and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example.
  • the schematic representation of the above terms does not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

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Abstract

La présente invention concerne un procédé et un dispositif permettant de gérer des défaillances de robinet à quatre voies dans un climatiseur, et un climatiseur, le procédé comprenant les étapes consistant à : recueillir un signal d'état d'inversion de robinet à quatre voies (102) ; et envoyer un signal de commande au robinet à quatre voies pour inverser le robinet à quatre voies, lorsque le signal d'état d'inversion de robinet à quatre voies recueilli est un signal d'exception (104). Un matériau étranger dans un trou d'évacuation sur un piston d'un robinet à quatre voies est évacué par inversion d'un bloc coulissant du robinet à quatre voies, de sorte que le robinet à quatre voies peut s'inverser normalement. Une alarme est déclenchée lorsque le robinet à quatre voies ne peut pas s'inverser normalement, et un utilisateur est ainsi rapidement informé qu'il doit réparer manuellement le robinet à quatre voies.
PCT/CN2017/082272 2016-05-05 2017-04-27 Procédé et dispositif permettant de gérer une défaillance de robinet à quatre voies dans un climatiseur, et climatiseur Ceased WO2017190630A1 (fr)

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CN201610298343.XA CN106016877A (zh) 2016-05-05 2016-05-05 空调器中四通阀故障的处理方法、处理装置及空调器

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