WO2017190628A1 - 四通阀故障检测方法、四通阀故障检测装置及空调器 - Google Patents

四通阀故障检测方法、四通阀故障检测装置及空调器 Download PDF

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Publication number
WO2017190628A1
WO2017190628A1 PCT/CN2017/082265 CN2017082265W WO2017190628A1 WO 2017190628 A1 WO2017190628 A1 WO 2017190628A1 CN 2017082265 W CN2017082265 W CN 2017082265W WO 2017190628 A1 WO2017190628 A1 WO 2017190628A1
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Prior art keywords
temperature
air conditioner
heat exchanger
way valve
user
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Ceased
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PCT/CN2017/082265
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English (en)
French (fr)
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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Priority claimed from CN201610298345.9A external-priority patent/CN105928278A/zh
Priority claimed from CN201610298344.4A external-priority patent/CN105928150A/zh
Priority claimed from CN201610298391.9A external-priority patent/CN105928279A/zh
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Publication of WO2017190628A1 publication Critical patent/WO2017190628A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a four-way valve fault detecting method, a four-way valve fault detecting device and 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 four-way valve piston causes the four-way valve to fail without reversing or incompletely reversing.
  • 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.
  • the embodiment of the first aspect of the present invention provides a four-way valve fault detection method, including: detecting a temperature of an indoor heat exchanger and a temperature of an indoor environment and a user-set working mode; The temperature of the heat exchanger and the temperature of the indoor environment determine whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current operating mode of the air conditioner and the user-set work If the mode is different, it is determined that the four-way valve is in the commutation abnormal state, and if the current operation mode of the air conditioner is the same as the operation mode set by the user, it is determined that the four-way valve is in the commutation normal state.
  • the four-way valve fault detecting method can detect the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger and the indoor
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the indoor environment is: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the indoor environment and the first preset temperature value.
  • determining if the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and the first preset temperature value, determining a current operating mode of the air conditioner and a working mode set by the user Differently, 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 current operating mode of the air conditioner is the same as the working mode set by the user Wherein the first preset temperature value is greater than or equal to detecting when detecting the temperature of the indoor heat exchanger difference.
  • the process of determining the failure of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different, specifically, cooling or pumping in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, in which the refrigerant generates heat after evaporation and heat absorption, and the amount of cold produced can only be transferred to the room through heat transfer. Therefore, the indoor cooling capacity is derived from Indoor heat exchanger, according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the user-set working mode is the cooling mode or the dehumidification mode
  • the indoor heat exchanger The temperature is still higher than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way can be determined.
  • the valve has a fault, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the user sets the working mode to the cooling mode or the dehumidification mode, if the indoor change The temperature of the device is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution appropriately considers the detection of the indoor heat exchanger.
  • the detection error at the temperature prevents the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the indoor heat exchanger is higher than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so as to avoid the mistake of the four-way valve due to the detection error. Fault detection, which in turn improves the accuracy of four-way valve fault detection.
  • the air conditioner when it is detected that the working mode set by the user is the heating mode, the air conditioner is determined according to the temperature of the indoor heat exchanger and the temperature of the indoor environment. Whether the current operating mode is the same as the working mode set by the user is: determining 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 sum of the temperature of the indoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is different from the working mode set by the user, 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 that the current operating mode of the air conditioner is the same as the working mode set by the user; The second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the indoor heat exchanger.
  • the working mode set by the user when the working mode set by the user 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 working mode set by the user is the heating mode, if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the heating mode, so that the four-way valve can be determined. If the four-way valve is in an abnormal state, the detection error of the indoor heat exchanger is also considered.
  • the temperature of the heat exchanger is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution also appropriately considers the temperature detection.
  • the error can prevent the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve fault detection method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve is in progress. Only when the temperature of the indoor heat exchanger is lower than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, thereby improving the fourth The accuracy of the valve fault detection.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset In the condition, the step of detecting the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user is performed; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than Equivalent to a predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-supply operating mode; the current operating mode of the air conditioner is a non-defrosting mode, and The air conditioner is separated from the defrosting end time by a preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner when the air conditioner is just running, the amount of cooling or the amount of heat generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the indoor environment, and therefore, in this case, if The four-way valve failure detecting method is performed on the four-way valve Fault detection is extremely prone to false detection, so that the fault detection of the four-way valve can be improved after the running time of the air conditioner is greater than or equal to the preset time.
  • the air conditioner When the operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable to use the four-way valve failure detection method to detect the failure of the four-way valve at this time, and further, the air conditioner is in the delivery state. In the wind mode, the compressor is not running. At this time, the air conditioner does not perform corresponding cooling or heating. Therefore, there is no temperature difference between the indoor heat exchanger and the indoor environment. Therefore, it is not suitable to use the method for four-way. Valve fault detection.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the indoor environment will change due to the change of the operating mode of the air conditioner. Therefore, It is possible to determine the abnormality of the four-way valve commutation simply based on the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • An embodiment of the second aspect of the present invention provides a four-way valve fault detecting method, including: detecting a temperature of an indoor heat exchanger and a temperature of an outdoor heat exchanger and a user-set working mode; according to the indoor heat exchanger And the temperature of the outdoor heat exchanger determines whether the current operating mode of the air conditioner is the same as the operating mode set by the user, if the current operating mode of the air conditioner and the user-set work If the mode is different, it is determined that the four-way valve is in the commutation abnormal state, and if the current operation mode of the air conditioner is the same as the operation mode set by the user, it is determined that the four-way valve is in the commutation normal state.
  • the four-way valve fault detecting method can detect the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger And the temperature of the outdoor heat exchanger determines whether the current operating mode of the air conditioner is set with the user The working mode is the same, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not reversing according to the regulation, that is, the four-way valve is in the state of commutation abnormality, and then Timely notify the user to repair the four-way valve.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger The specific process of whether the current operating mode of the air conditioner is the same as the working mode set by the user is: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, if If the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is different from the operating mode set by the user, if the temperature of the indoor heat exchanger is less than the The temperature of the outdoor heat exchanger determines that the current operating mode of the air conditioner is the same as the operating mode set by the user.
  • the process of determining the fault of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, cooling is performed 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 mode or dehumidification mode.
  • the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, the working mode set by the user is the cooling mode or pumping.
  • the wet 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 current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversed or If the steering is not completely reversed, it can be determined that the four-way valve has a commutation fault.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger Whether the current operation mode of the air conditioner is the same as the working mode set by the user is: determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, if the indoor heat exchange If the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is different from the working mode set by the user, if the temperature of the indoor heat exchanger is greater than the outdoor heat exchange Device The temperature of the air conditioner is determined to be the same as the operating mode set by the user.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, thereby transferring heat through heat transfer. Dissipated into the room, therefore, the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the operating mode set by the user is the heating mode
  • the temperature of the indoor heat exchanger is still lower than or equal to the outdoor
  • the temperature of the heat exchanger is inevitable that the current operating mode of the air conditioner 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 is in a commutation abnormal state.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset And the step of detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set working mode; wherein the preset condition includes at least one of the following conditions: operation of the air conditioner The time is greater than or equal to the predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-airing operating mode; and the current operating mode of the air conditioner is a non-defrosting mode. And the air conditioner is separated from the defrosting end time by a preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner operating mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for using the four-way at this time.
  • the valve fault detection method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not operated, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the indoor heat exchanger There is also no temperature difference between the outdoor heat exchanger and the outdoor heat exchanger. Therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • An embodiment of the third aspect of the present invention provides a four-way valve fault detecting method, comprising: detecting a temperature of an outdoor heat exchanger and a temperature of an outdoor environment and a user-set working mode; according to the temperature of the outdoor heat exchanger Determining, with the temperature of the outdoor environment, whether the current operating mode of the air conditioner is the same as the working mode set by the user, and if the current operating mode of the air conditioner is different from the working mode set by the user, It is determined that the four-way valve is in the commutation abnormal state, and if the current operation mode of the air conditioner is the same as the operation mode set by the user, it is determined that the four-way valve is in the commutation normal state.
  • the four-way valve fault detecting method can detect the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user, thereby being able to be based on the temperature of the outdoor heat exchanger and the outdoor
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the determining according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is: determining whether the temperature of the outdoor heat exchanger is greater than or equal to the temperature of the outdoor environment and the first preset a sum of 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 first preset temperature value, determining a current operating mode of the air conditioner and the user setting Different working modes, if the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the first preset temperature value, determining a current operating mode of the air conditioner and the user-set The working mode is the same; wherein the first preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the air conditioner performs the cooling mode or In the dehumidification mode, the outdoor heat exchanger is equivalent to a condenser, which dissipates the heat in the room to the outdoor environment through the condensation heat of the refrigerant. Therefore, when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment, the air conditioner Only when the cooling mode or the dehumidification mode can be realized, that is, when the air conditioner is in the cooling mode or the dehumidification mode, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the working mode set by the user is the cooling mode or the dehumidification mode.
  • the mode if the temperature of the outdoor heat exchanger is higher than or equal to the outdoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing.
  • the four-way valve has a fault, but considering the detection error when detecting the temperature of the outdoor heat exchanger, therefore, the work set by the user
  • the cooling mode or the dehumidification mode is used, 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 is abnormally commutated. Therefore, the four-way provided by the technical solution
  • the valve failure detection method appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing the occurrence of a detection error due to the temperature detection error, thereby improving the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the outdoor heat exchanger is higher than the outdoor ambient temperature by 1 ° C and above, it can be explained that the four-way valve is not reversing or not completely reversing, thereby avoiding erroneous fault detection due to detection error. In turn, the accuracy of the four-way valve fault detection can be improved.
  • the air conditioner when it is detected that the operating mode set by the user is the heating mode, the air conditioner is determined according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment. Whether the current operation mode is the same as the working mode set by the user is: determining 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 second preset temperature value, If the temperature of the outdoor heat exchanger is less than or equal to the sum of the temperature of the outdoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is different from the working mode set by the user, The temperature of the outdoor heat exchanger is greater than the sum of the temperature of the outdoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is the same as the working mode set by the user; The second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the outdoor heat exchanger when the working mode set by the user is the heating mode, the outdoor heat exchanger continuously transfers heat to the room through the evaporation heat absorption of the refrigerant, that is, the outdoor heat exchanger continuously draws from the outdoor environment.
  • the heat is such that the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment.
  • the operating mode set by the user is the heating mode
  • the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature
  • the current operating mode of the air conditioner 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 is in an abnormal state, but the detection when detecting the temperature of the outdoor heat exchanger is also considered.
  • the four-way valve fault detection method provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the occurrence of detection errors due to the temperature detection error. , Thereby improving the accuracy of the fault detection method of the four-way valve.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • 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, the fault detection of the four-way valve is in progress. Only when the temperature of the outdoor heat exchanger is 1 ° C lower than the outdoor ambient temperature and more can the four-way valve not be reversing or not completely reversing, so as to avoid erroneous fault detection due to detection error, and then Improve the accuracy of four-way valve fault detection.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset And the step of detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than Equal to the predetermined running time; the current operating mode of the air conditioner is non-automatic The current mode of operation of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrost mode, and the air conditioner is separated from the defrost end time by a preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner's operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for the four-way valve fault detection at this time.
  • the method detects the fault of the four-way valve.
  • the air conditioner when the air conditioner is in the air supply mode, the compressor is not running, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the outdoor heat exchanger and the outdoor environment There is no temperature difference between them, and therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • An embodiment of the fourth aspect of the present invention provides a four-way valve fault detecting apparatus for an air conditioner, comprising: detecting means for detecting a temperature of an indoor heat exchanger and a temperature of an indoor environment and a user setting a working mode, configured to determine, according to a temperature of the indoor heat exchanger and a temperature of the indoor environment, whether a current operating mode of the air conditioner is the same as a working mode set by the user, and When the current operation mode of the air conditioner is different from the operation mode set by the user, it is determined that the four-way valve is in a commutation abnormal state, and when the current operation mode of the air conditioner is the same as the operation mode set by the user, It is determined that the four-way valve is in a commutating normal state.
  • the four-way valve fault detecting device can detect the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger and the indoor
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the processing device is configured to determine whether the temperature of the indoor heat exchanger is determined when the detecting device detects that the operating mode set by the user is a cooling mode or a humidifying mode And greater than or equal to a sum of a temperature of the indoor environment and a first preset temperature value, and when the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and the first preset temperature value, determining The current operating mode of the air conditioner is different from the working mode set by the user, and when 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, The current operating mode of the air conditioner is the same as the working mode set by the user; 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 the failure of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different, specifically, cooling or pumping in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, in which the refrigerant generates heat after evaporation and heat absorption, and the amount of cold produced can only be transferred to the room through heat transfer. Therefore, the indoor cooling capacity is derived from Indoor heat exchanger, according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the user-set working mode is the cooling mode or the dehumidification mode
  • the indoor heat exchanger The temperature of the air conditioner is higher than or equal to the indoor ambient temperature. It is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and thus It can be determined that the four-way valve has a fault, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the operating mode set by the user is the cooling mode or the dehumidification mode, if the temperature of the indoor heat exchanger The higher or lower than the indoor ambient temperature, it does not necessarily explain the four-way valve commutation abnormality. Therefore, the four-way valve fault detection method provided by the technical solution appropriately considers the temperature of the indoor heat exchanger when detecting The detection error can prevent the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the indoor heat exchanger is higher than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, and then It can improve the accuracy of four-way valve fault detection.
  • the processing device is configured to determine, when the detecting device detects that the working mode set by the user is a heating mode, whether the temperature of the indoor heat exchanger is less than or equal to Determining the temperature of the indoor environment and the second preset temperature value, and determining that the air conditioner is when the temperature of the indoor heat exchanger is less than or equal to a temperature of the indoor environment and the second preset temperature value
  • the current operation mode of the device is different from the operation mode set by the user, and when 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 current operating mode of the device is the same as the working mode set by the user; wherein the second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the indoor heat exchanger.
  • the working mode set by the user when the working mode set by the user 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 working mode set by the user is the heating mode, if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the heating mode, so that the four-way valve can be determined. If the four-way valve is in an abnormal state, the detection error of the indoor heat exchanger is also considered.
  • the temperature of the heat exchanger is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution also appropriately considers the temperature detection. Error, which prevents the occurrence of false detection due to temperature detection errors Health, and thus improve the accuracy of the four-way valve fault detection method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve is in progress. Only when the temperature of the indoor heat exchanger is lower than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, thereby improving the fourth The accuracy of the valve fault detection.
  • the processing device is further configured to determine whether a current condition of the air conditioner meets a preset condition, and when the current condition of the air conditioner meets a preset condition, the control detecting device detects the indoor heat exchange The temperature of the device and the temperature of the indoor environment and the operating mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to a predetermined running time; the current running of the air conditioner The mode is a non-automatic operation mode; the current operation mode of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is separated from the defrost end time by a preset time. .
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method Specifically, for example, when the air conditioner is just running, the amount of cooling or the amount of heat generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the indoor environment, and therefore, in this case,
  • the four-way valve fault detection method to detect the fault of the four-way valve, it is easy to detect the fault, so that the four-way valve fault detection can be improved after the air conditioner running time is greater than or equal to the preset time.
  • the accuracy of the fault detection method in the same way, when the operation mode of the air conditioner is the automatic operation mode, since the air conditioner itself adjusts the working mode at a time, it is not suitable to use the four-way valve fault detection method at this time.
  • the valve is used for fault detection.
  • the air conditioner when the air conditioner is in the air supply mode, the compressor is not running. At this time, the air conditioner does not perform corresponding cooling or heating. Therefore, there is no temperature between the indoor heat exchanger and the indoor environment. Poor, and therefore, it is not suitable to use this method for fault detection of a four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the indoor heat exchanger will be caused by the change of the working mode of the air conditioner. The temperature and the temperature of the indoor environment are changed. Therefore, it is not possible to determine the abnormality of the four-way valve commutation simply based on the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment.
  • the four-way valve failure detecting device further includes: an output device, configured to output a four-way valve commutation abnormality after the processing device determines that the four-way valve is in a commutation abnormal state signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • An embodiment of the fifth aspect of the present invention provides a four-way valve fault detecting apparatus for an air conditioner, comprising: detecting means for detecting a temperature of an indoor heat exchanger and a temperature of an outdoor heat exchanger and a user setting a working mode, configured to determine, according to a temperature of the indoor heat exchanger and a temperature of the outdoor heat exchanger, whether a current operating mode of the air conditioner is the same as a working mode set by the user, and When the current operating mode of the air conditioner is different from the working mode set by the user, determining that the four-way valve is in a commutation abnormal state, and that the current operating mode of the air conditioner is opposite to the working mode set by the user At the same time, it is determined that the four-way valve is in a normal commutation state.
  • the four-way valve fault detecting device provided by the embodiment of the fifth aspect of the present invention can detect the temperature of the indoor heat exchanger by detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set working mode. And the temperature of the outdoor heat exchanger determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, the four-way valve can be determined. If the four-way valve is in the direction of commutation abnormality, the user can be notified to the four-way valve in time.
  • the processing device is configured to determine whether the temperature of the indoor heat exchanger is determined when the detecting device detects that the operating mode set by the user is a cooling mode or a humidifying mode Is greater than or equal to the temperature of the outdoor heat exchanger, and the temperature of the indoor heat exchanger is greater than or equal to
  • the temperature of the outdoor heat exchanger is described, it is determined that the current operating mode of the air conditioner is different from the operating mode set by the user, and when the temperature of the indoor heat exchanger is less than the temperature of the outdoor heat exchanger, It is determined that the current operating mode of the air conditioner is the same as the operating mode set by the user.
  • the process of determining the fault of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, cooling is performed 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 mode or dehumidification mode.
  • the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, the working mode set by the user is the cooling mode or pumping.
  • the wet 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 current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversed or If the steering is not completely reversed, it can be determined that the four-way valve has a commutation fault.
  • the processing device is configured to determine, when the detecting device detects that the working mode set by the user is a heating mode, whether the temperature of the indoor heat exchanger is less than or equal to Determining the temperature of the outdoor heat exchanger, and determining that the current operating mode of the air conditioner is different from the operating mode set by the user when the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, And when the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, determining that the current operating mode of the air conditioner is the same as the working mode set by the user.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, thereby transferring heat through heat transfer. Dissipated into the room, therefore, the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the operating mode set by the user is the heating mode
  • the temperature of the indoor heat exchanger is still lower than or equal to the outdoor
  • the temperature of the heat exchanger is inevitable that the current operating mode of the air conditioner 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 is in a commutation abnormal state.
  • the processing device is further configured to determine whether a current condition of the air conditioner meets a preset condition, and when the current condition of the air conditioner meets a preset condition, control
  • the detecting device detects the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the working mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner And greater than or equal to a predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-airing operating mode; the current operating mode of the air conditioner is a non-defrosting mode, and The air conditioner is separated from the defrosting end time by a preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method Specifically, for example, when the air conditioner is just running, the amount of the cooling mode or the heating mode generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the outdoor heat exchanger, and therefore, In this case, if the four-way valve fault detection method is used to detect the fault of the four-way valve, it is easy to detect the error, and then the four-way valve is performed after the running time of the air conditioner is greater than or equal to the preset time.
  • Fault detection can improve the accuracy of the four-way valve fault detection method.
  • the air conditioner's operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode, it is not suitable for use at this time.
  • the valve detection method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not running. At this time, the air conditioner does not perform the corresponding cooling mode or heating mode. Therefore, the indoor heat exchange There is also no temperature difference between the heater and the outdoor heat exchanger, and therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger change due to the change of the operating mode of the air conditioner, so It is not possible to determine the abnormality of the four-way valve commutation simply based on the temperature difference between the temperature of the indoor heat exchanger and the outdoor heat exchanger.
  • the four-way valve failure detecting device further includes: an output device, configured to output a four-way valve commutation abnormality after the processing device determines that the four-way valve is in a commutation abnormal state signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner can reverse the signal according to the received four-way valve to the four-way The valve is automatically repaired.
  • An embodiment of the sixth aspect of the present invention provides a four-way valve fault detecting apparatus for an air conditioner, comprising: detecting means for detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user a processing device, configured to determine, according to a temperature of the outdoor heat exchanger and a temperature of the outdoor environment, whether a current operating mode of the air conditioner is the same as a working mode set by the user, and in the air conditioner When the current operation mode is different from the operation mode set by the user, it is determined that the four-way valve is in a commutation abnormal state, and when the current operation mode of the air conditioner is the same as the operation mode set by the user, the determination is performed.
  • the four-way valve is in a normal state of commutation.
  • the four-way valve fault detecting device can detect the temperature of the outdoor heat exchanger and the outdoor heat source by detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user.
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the processing device is configured to determine whether the temperature of the outdoor heat exchanger is when the detecting device detects that the operating mode set by the user is a cooling mode or a humidifying mode And greater than or equal to a sum of a temperature of the outdoor environment and a first preset temperature value, and determining when the temperature of the outdoor heat exchanger is greater than or equal to a sum of a temperature of the outdoor environment and the first preset temperature value
  • the current operating mode of the air conditioner is different from the working mode set by the user, and when the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the first preset temperature value,
  • the current operating mode of the air conditioner is the same as the working mode set by the user; wherein the first preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the air conditioner performs the cooling mode or In the dehumidification mode
  • the outdoor heat exchanger is equivalent to a condenser, which dissipates the heat in the room to the outdoor environment through the condensation heat of the refrigerant. Therefore, when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment, the air conditioner Only in the cooling mode or dehumidification mode, that is, the air conditioner cooling mode or In the dehumidification mode, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the operating mode set by the user is the cooling mode or the dehumidification mode
  • the temperature of the outdoor heat exchanger is higher than or equal to the outdoor temperature Ambient temperature
  • the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then it can be determined that the four-way valve has failed, but considering The detection error when detecting the temperature of the outdoor heat exchanger, therefore, when the operating mode set by the user is the cooling mode or the dehumidification mode, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, It is not always possible to explain the abnormality of the four-way valve commutation.
  • the four-way valve fault detection method provided by the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing the temperature detection error from being caused.
  • the occurrence of a detection error occurs, which improves the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the outdoor heat exchanger is higher than the outdoor ambient temperature by 1 ° C and above, it can be explained that the four-way valve is not reversing or not completely reversing, thereby avoiding erroneous fault detection due to detection error. In turn, the accuracy of the four-way valve fault detection can be improved.
  • the processing device is configured to determine, when the detecting device detects that the working mode set by the user is a heating mode, whether the temperature of the outdoor heat exchanger is less than or equal to Determining the temperature of the outdoor environment and the second preset temperature value, and determining that the air conditioner is when the temperature of the outdoor heat exchanger is less than or equal to a temperature of the outdoor environment and the second preset temperature value
  • the current operating mode of the device is different from the working mode set by the user, and when the temperature of the outdoor heat exchanger is greater than the sum of the temperature of the outdoor environment and the second preset temperature value, determining the air conditioner
  • the current operating mode of the device is the same as the working mode set by the user; wherein the second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the outdoor heat exchanger when the working mode set by the user is the heating mode, the outdoor heat exchanger continuously transfers heat to the room through the evaporation heat absorption of the refrigerant, that is, the outdoor heat exchanger continuously draws from the outdoor environment.
  • the heat is such that the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment.
  • the four-way valve 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 current operating mode of the air conditioner is not the heating mode, so that the four-way valve can be determined
  • the second preset temperature value is greater than or equal to 1 ° C.
  • 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, the fault detection of the four-way valve is in progress. Only when the temperature of the outdoor heat exchanger is 1 ° C lower than the outdoor ambient temperature and more can the four-way valve not be reversing or not completely reversing, so as to avoid erroneous fault detection due to detection error, and then Improve the accuracy of four-way valve fault detection.
  • the processing device is further configured to determine whether the current condition of the air conditioner meets a preset condition, and when the current condition of the air conditioner meets the preset condition, the control detecting device detects the outdoor heat exchange The temperature of the device and the temperature of the outdoor environment and the operating mode set by the user; wherein the preset condition comprises at least one of the following conditions: the running time of the air conditioner is greater than or equal to a predetermined running time; the current running of the air conditioner The mode is a non-automatic operation mode; the current operation mode of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is separated from the defrost end time by a preset time. .
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner's operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for the four-way valve fault detection at this time.
  • the method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not running, and the air conditioner is The corresponding cooling mode or heating mode is not performed, so there is no temperature difference between the outdoor heat exchanger and the outdoor environment, and therefore, it is not suitable to use the method for fault detection of the four-way valve.
  • the four-way valve failure detecting device further includes: an output device, configured to output a four-way valve commutation abnormality after the processing device determines that the four-way valve is in a commutation abnormal state signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • An embodiment of the seventh aspect of the present invention provides an air conditioner comprising the four-way valve fault detecting apparatus according to any one of the fourth aspect, the fifth aspect, and the sixth aspect.
  • the air conditioner provided by the embodiment of the seventh aspect of the present invention includes the four-way valve fault detecting device provided by any of the above embodiments, and therefore has the beneficial effects of the four-way valve fault detecting device provided by any of the above embodiments. I will not repeat them here.
  • FIG. 1 is a flow chart showing a four-way valve failure detecting method according to an embodiment of the present invention
  • FIG. 2 is a flow chart showing another flow of a four-way valve failure detecting method according to an embodiment of the present invention
  • FIG. 3 is a schematic flow chart showing a four-way valve failure detecting method according to an embodiment of the present invention.
  • FIG. 4 is a flow chart showing a four-way valve failure detecting method according to another embodiment of the present invention.
  • FIG. 5 is a flow chart showing another flow of a four-way valve failure detecting method according to another embodiment of the present invention.
  • FIG. 6 is a schematic flow chart showing another method of detecting a four-way valve fault according to another embodiment of the present invention.
  • FIG. 7 is a flow chart showing a four-way valve failure detecting method according to still another embodiment of the present invention.
  • FIG. 8 is a flow chart showing another flow of a four-way valve failure detecting method according to still another embodiment of the present invention.
  • FIG. 9 is a flow chart showing still another flow of a four-way valve failure detecting method according to still another embodiment of the present invention.
  • Figure 10 is a block diagram showing the structure of a four-way valve malfunctioning device according to an embodiment of the present invention.
  • Figure 11 is a block diagram showing the structure of a four-way valve malfunctioning device according to another embodiment of the present invention.
  • Figure 12 is a block diagram showing the structure of a four-way valve malfunctioning device according to still another embodiment of the present invention.
  • Figure 13 is a block diagram showing the structure of an air conditioner according to an embodiment of the present invention.
  • Figure 14 is a block diagram showing the structure of an air conditioner according to another embodiment of the present invention.
  • Fig. 15 is a block diagram showing the structure of an air conditioner according to still another embodiment of the present invention.
  • a four-way valve fault detection method in accordance with some embodiments of the present invention is described below with reference to FIG.
  • the embodiment of the first aspect of the present invention provides a method for detecting a four-way valve fault, as shown in FIG. 1 , comprising: step 102, detecting a temperature of an indoor heat exchanger and a temperature of an indoor environment and a working mode set by a user; Step 104: Determine, according to the temperature of the indoor heat exchanger and the temperature of the indoor environment, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current operating mode of the air conditioner Different from the working mode set by the user, determining that the four-way valve is in a commutation abnormal state, if the current operating mode of the air conditioner is the same as the working mode set by the user, determining that the four-way valve is in Switch to normal state.
  • the four-way valve fault detecting method can detect the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger and the indoor
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the indoor environment is: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the indoor environment and the first preset temperature value.
  • determining if the temperature of the indoor heat exchanger is greater than or equal to a sum of a temperature of the indoor environment and the first preset temperature value, determining a current operating mode of the air conditioner and a working mode set by the user Differently, 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 current operating mode of the air conditioner is the same as the working mode set by the user Wherein the first preset temperature value is greater than or equal to detecting when detecting the temperature of the indoor heat exchanger difference.
  • the process of determining the failure of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different, specifically, cooling or pumping in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, in which the refrigerant generates heat after evaporation and heat absorption, and the amount of cold produced can only be transferred to the room through heat transfer. Therefore, the indoor cooling capacity is derived from Indoor heat exchanger, according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the user-set working mode is the cooling mode or the dehumidification mode
  • the indoor heat exchanger The temperature is still higher than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way can be determined.
  • the valve has a fault, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the user sets the working mode to the cooling mode or the dehumidification mode, if the indoor change The temperature of the device is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution appropriately considers the detection of the indoor heat exchanger.
  • the detection error at the temperature prevents the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the indoor heat exchanger is higher than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, and then It can improve the accuracy of four-way valve fault detection.
  • the air conditioner when it is detected that the working mode set by the user is the heating mode, the air conditioner is determined according to the temperature of the indoor heat exchanger and the temperature of the indoor environment. Whether the current operating mode is the same as the working mode set by the user is: determining 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 sum of the temperature of the indoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is different from the working mode set by the user, 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 that the current operating mode of the air conditioner is the same as the working mode set by the user; The second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the indoor heat exchanger.
  • the working mode set by the user when the working mode set by the user 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 working mode set by the user is the heating mode, if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the heating mode, so that the four-way valve can be determined. If the four-way valve is in an abnormal state, the detection error of the indoor heat exchanger is also considered.
  • the temperature of the heat exchanger is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution also appropriately considers the temperature detection.
  • the error can prevent the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve fault detection method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve is in progress. Only when the temperature of the indoor heat exchanger is lower than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, thereby improving the fourth The accuracy of the valve fault detection.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset In the condition, the step of detecting the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user is performed; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than Equivalent to a predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-supply operating mode; the current operating mode of the air conditioner is a non-defrosting mode, and The air conditioner is separated from the defrosting end time by a preset time.
  • the four-way valve fault detection method is as shown in FIG. 2, and includes:
  • Step 202 Determine whether the current condition of the air conditioner meets the preset condition, and when the current condition that the air conditioner is located meets the preset condition, perform step 204, and vice versa, where the air conditioner is located. When the current condition does not meet the preset condition, the four-way valve is not detected for failure.
  • Step 204 detecting the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user. formula.
  • Step 206 Determine, according to the temperature of the indoor heat exchanger and the temperature of the indoor environment, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current operating mode of the air conditioner Different from the working mode set by the user, it is determined that the four-way valve is in a commutation abnormal state, and vice versa, if the current operating mode of the air conditioner is the same as the working mode set by the user, determining the four-way The valve is in the normal state of commutation and ends the fault detection of the four-way valve.
  • the technical solution judges the current condition of the air conditioner, and only determines whether the current condition of the air conditioner meets the preset condition, thereby preventing the misjudgment, thereby improving the fault detection method of the four-way valve. accuracy. Specifically, for example, when the air conditioner is just running, the amount of cooling or the amount of heat generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the indoor environment, and therefore, in this case, By using the four-way valve fault detection method to detect the fault of the four-way valve, it is easy to detect the fault, so that the four-way valve fault detection can be improved after the air conditioner running time is greater than or equal to the preset time.
  • the accuracy of the fault detection method in the same way, when the operation mode of the air conditioner is the automatic operation mode, since the air conditioner itself adjusts the working mode at a time, it is not suitable to use the four-way valve fault detection method at this time.
  • the valve is used for fault detection.
  • the air conditioner when the air conditioner is in the air supply mode, the compressor is not running. At this time, the air conditioner does not perform corresponding cooling or heating. Therefore, there is no temperature between the indoor heat exchanger and the indoor environment. Poor, and therefore, it is not suitable to use this method for fault detection of a four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the indoor environment will change due to the change of the operating mode of the air conditioner. Therefore, It is possible to determine the abnormality of the four-way valve commutation simply based on the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • the four-way valve is in a reversing abnormal state, that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and transmitting through the signal output device.
  • the four-way valve reverses the abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reverse abnormal signal.
  • Step 301 determining whether the current condition of the air conditioner meets a preset condition. The process proceeds to step 302. If not, the determination is directly ended. In step 302, the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user are detected. If the working mode set by the user is detected as the cooling mode or pumping In the wet mode, go to step 303.
  • step 304 determines whether the temperature T2 of the indoor heat exchanger is greater than or equal to the temperature T1 of the indoor environment and the first pre- Set the sum of the temperature values a ° C, if T2 ⁇ T1 + a ° C, then go to step 305, if T2 ⁇ T1 + a ° C, then go to step 306;
  • Step 304 determine whether the indoor heat exchanger temperature T2 is less than or equal to the indoor environment If the temperature T1 is equal to the second preset temperature value b ° C, if T2 ⁇ T1 + b ° C, then go to step 305, if T2 > T1 + b ° C, then go to step 306; step 305, determine that the four-way valve is changing To the abnormal state, and output four Valve switches an abnormality signal, and then ends the determination; step 306, it is determined to change the four-way valve is in a normal
  • the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to a predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current state of the air conditioner The operation mode is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is separated from the defrost end time by a preset time.
  • the first preset temperature value a and the second preset temperature value b may be selected to be 1 ° C, when the user-set working mode is the heating mode, if detected
  • the indoor ambient temperature T1 is 15 °C
  • the indoor heat exchanger temperature T2 is 15.5 °C, that is, T2 ⁇ T1 + 1 ° C. It is considered that the four-way valve has no normal commutation or incomplete reversal, that is, the four-way valve is in the commutation abnormality. State, at this time, 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 is not normally commutated or not completely reversing because, If the four-way valve is normally reversed, the temperature of the indoor heat exchanger should be much larger than the indoor ambient temperature.
  • step 305 after determining that the four-way valve is in the reversing abnormal state, the four-way valve can be automatically repaired by an alarm device or the like, or by the abnormal signal output device to control the four-way valve maintenance device in the air conditioner. .
  • the embodiment of the second aspect of the present invention provides a four-way valve fault detecting method, as shown in FIG. 4, comprising: step 402, detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set work. a mode; step 404, determining, according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the air conditioner Determining that the four-way valve is in a commutation abnormal state, and determining that the current operation mode of the air conditioner is the same as the operation mode set by the user, and determining that the current operation mode is different from the operation mode set by the user.
  • the four-way valve is in a normal commutation state.
  • the four-way valve fault detecting method can detect the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger And the temperature of the outdoor heat exchanger determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, the four-way valve can be determined. If the four-way valve is in the direction of commutation abnormality, the user can be notified to the four-way valve in time.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger The specific process of whether the current operating mode of the air conditioner is the same as the working mode set by the user is: determining whether the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, if If the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is different from the operating mode set by the user, if the temperature of the indoor heat exchanger is less than the The temperature of the outdoor heat exchanger determines that the current operating mode of the air conditioner is the same as the operating mode set by the user.
  • the process of determining the fault of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, cooling is performed 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 mode or dehumidification mode. Therefore, according to the law of energy transfer, indoor heat exchangers are used in air conditioner cooling mode or dehumidification mode.
  • the temperature must be lower than the temperature of the outdoor heat exchanger. Therefore, if the operating mode set by the user is the cooling mode or the 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 current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then it can be determined that the four-way valve has a commutation fault.
  • the determining according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger Whether the current operation mode of the air conditioner is the same as the working mode set by the user is: determining whether the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, if the indoor heat exchange If the temperature of the outdoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is different from the working mode set by the user, if the temperature of the indoor heat exchanger is greater than the outdoor heat exchange The temperature of the device determines that the current operating mode of the air conditioner is the same as the operating mode set by the user.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, thereby transferring heat through heat transfer. Dissipated into the room, therefore, the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the operating mode set by the user is the heating mode
  • the temperature of the indoor heat exchanger is still lower than or equal to the outdoor
  • the temperature of the heat exchanger is inevitable that the current operating mode of the air conditioner 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 is in a commutation abnormal state.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset And the step of detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set working mode; wherein the preset condition includes at least one of the following conditions: operation of the air conditioner The time is greater than or equal to the predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-airing operating mode; and the current operating mode of the air conditioner is a non-defrosting mode. And the air conditioner is separated from the defrosting end time by a preset time.
  • the four-way valve fault detection method is as shown in FIG. 5, and includes:
  • Step 502 Determine whether the current condition of the air conditioner meets the preset condition, and when the current condition of the air conditioner meets the preset condition, perform step 504, and vice versa, where the air conditioner is located. When the current condition does not meet the preset condition, the four-way valve is not detected for failure.
  • Step 504 detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set work mode.
  • Step 506 determining, according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current state of the air conditioner If the operation mode is different from the operation mode set by the user, it is determined that the four-way valve is in a commutation abnormal state, and vice versa, if the current operation mode of the air conditioner is the same as the operation mode set by the user, The four-way valve is in the normal state of commutation and ends the fault detection of the four-way valve.
  • the technical solution judges the current condition of the air conditioner, and only determines whether the current condition of the air conditioner meets the preset condition, thereby preventing the misjudgment, thereby improving the fault detection method of the four-way valve. accuracy. Specifically, for example, when the air conditioner is just running, the amount of the cooling mode or the heating mode generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the outdoor heat exchanger, and therefore, In this case, if the four-way valve fault detection method is used to detect the fault of the four-way valve, it is easy to detect the fault, and then the fault of the four-way valve is performed after the running time of the air conditioner is greater than or equal to the preset time.
  • the detection can improve the accuracy of the four-way valve fault detection method.
  • the air conditioner operating mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for using the four-way at this time.
  • the valve fault detection method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not operated, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the indoor heat exchanger There is also no temperature difference between the outdoor heat exchanger and the outdoor heat exchanger. Therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger change due to the change of the operating mode of the air conditioner, so It is not possible to determine the abnormality of the four-way valve commutation simply based on the temperature difference between the indoor heat exchanger and the outdoor heat exchanger.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • the four-way valve is in a reversing abnormal state, that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and transmitting through the signal output device.
  • the four-way valve reverses the abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reverse abnormal signal.
  • Step 601 Determine whether the current condition of the air conditioner meets a preset condition, if the step is satisfied 602, if not satisfied, directly end the determination; step 602, detecting the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the user-set working mode, if the user-set working mode is detected as the cooling mode or dehumidification If the mode is changed to step 603, if it is detected that the working mode set by the user is the heating mode, then go to step 604; step 603, determine whether the temperature T1 of the indoor heat exchanger is greater than or equal to the temperature T2 of the outdoor heat exchanger, if T1 ⁇ T2, then go to step 605, if T1 ⁇ T2, go to step 606; step 604, determine whether the temperature T1 of the indoor heat exchanger is less than or equal to the temperature T2 of the outdoor heat exchanger,
  • the preset condition includes at least one of the following conditions: an operating time of the air conditioner is greater than or equal to a predetermined running time; a current operating mode of the air conditioner is a non-automatic operating mode; a current state of the air conditioner The operation mode is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is separated from the defrost end time by a preset time.
  • step 604 specifically, for example, when the operating mode set by the user is the heating mode, if the temperature T1 of the indoor heat exchanger is 15 ° C, the temperature T2 of the outdoor heat exchanger is 16 ° C, that is, T1 ⁇ T2, it is considered that the four-way valve does not change normally or not completely, that is, the four-way valve is in the abnormal state of commutation, because if the four-way valve is normally reversed, the temperature of the indoor heat exchanger should be greater than the outdoor heat exchanger. temperature.
  • step 605 after determining that the four-way valve is in the commutation abnormal state, the four-way valve can be automatically repaired by an alarm device or the like, or by the abnormal signal output device to control the four-way valve maintenance device in the air conditioner. .
  • the embodiment of the third aspect of the present invention provides a four-way valve fault detection method, as shown in FIG. 7, comprising: step 702, detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user; Step 704, determining, according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current operating mode of the air conditioner Different from the working mode set by the user, it is determined that the four-way valve is in the direction of commutation abnormality If the current operating mode of the air conditioner is the same as the working mode set by the user, it is determined that the four-way valve is in a normal commutation state.
  • the four-way valve fault detecting method can detect the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user, thereby being able to be based on the temperature of the outdoor heat exchanger and the outdoor
  • the temperature of the environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not changed according to the regulations.
  • the four-way valve is in a reversing abnormal state, and then the user can be notified in time to repair the four-way valve.
  • the four-way can be determined.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the determining according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment is: determining whether the temperature of the outdoor heat exchanger is greater than or equal to the temperature of the outdoor environment and the first preset temperature value.
  • determining 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 first preset temperature value, determining a current operating mode of the air conditioner and a working mode set by the user Differently, if the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the first preset temperature value, determining that the current operating mode of the air conditioner is the same as the working mode set by the user Wherein the first preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the air conditioner performs the cooling mode or In the dehumidification mode, the outdoor heat exchanger is equivalent to a condenser, which dissipates the heat in the room to the outdoor environment through the condensation heat of the refrigerant. Therefore, when the temperature of the outdoor heat exchanger is lower than the temperature of the outdoor environment, the air conditioner Only when the cooling mode or the dehumidification mode can be realized, that is, when the air conditioner is in the cooling mode or the dehumidification mode, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature.
  • the working mode set by the user is the cooling mode or the dehumidification mode.
  • the mode if the temperature of the outdoor heat exchanger is higher than or equal to the outdoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing. , then you can determine that the four-way valve has failed, but consider The detection error when detecting the temperature of the outdoor heat exchanger, therefore, when the operating mode set by the user is the cooling mode or the dehumidification mode, if the temperature of the outdoor heat exchanger is higher or lower than the outdoor ambient temperature, It does not necessarily explain the abnormality of the four-way valve commutation.
  • the four-way valve fault detection method provided by the technical solution appropriately takes into consideration the detection error when detecting the temperature of the outdoor heat exchanger, thereby preventing the temperature detection error.
  • the occurrence of detection errors occurs, which improves the accuracy of the four-way valve fault detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the outdoor heat exchanger is higher than the outdoor ambient temperature by 1 ° C and above, it can be explained that the four-way valve is not reversing or not completely reversing, thereby avoiding erroneous fault detection due to detection error. In turn, the accuracy of the four-way valve fault detection can be improved.
  • the air conditioner when it is detected that the operating mode set by the user is the heating mode, the air conditioner is determined according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment. Whether the current operation mode is the same as the working mode set by the user is: determining 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 second preset temperature value, If the temperature of the outdoor heat exchanger is less than or equal to the sum of the temperature of the outdoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is different from the working mode set by the user, The temperature of the outdoor heat exchanger is greater than the sum of the temperature of the outdoor environment and the second preset temperature value, determining that the current operating mode of the air conditioner is the same as the working mode set by the user; The second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the outdoor heat exchanger when the working mode set by the user is the heating mode, the outdoor heat exchanger continuously transfers heat to the room through the evaporation heat absorption of the refrigerant, that is, the outdoor heat exchanger continuously draws from the outdoor environment.
  • the heat is such that the temperature of the outdoor heat exchanger is higher than the temperature of the outdoor environment.
  • the operating mode set by the user is the heating mode
  • the temperature of the outdoor heat exchanger is lower than or equal to the outdoor ambient temperature
  • the current operating mode of the air conditioner 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 is in an abnormal state, but the detection when detecting the temperature of the outdoor heat exchanger is also considered.
  • the four-way valve fault detection method provided by the technical solution also appropriately considers the error of the temperature detection, thereby preventing the occurrence of a detection error due to the temperature detection error, thereby improving the four-way valve failure detection. The accuracy of the method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • 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, the fault detection of the four-way valve is in progress. Only when the temperature of the outdoor heat exchanger is 1 ° C lower than the outdoor ambient temperature and more can the four-way valve not be reversing or not completely reversing, so as to avoid erroneous fault detection due to detection error, and then Improve the accuracy of four-way valve fault detection.
  • the four-way valve fault detecting method further includes: determining whether a current condition of the air conditioner meets a preset condition; and determining that a current condition of the air conditioner meets a preset And the step of detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than Equivalent to a predetermined running time; the current operating mode of the air conditioner is a non-automatic operating mode; the current operating mode of the air conditioner is a non-supply operating mode; the current operating mode of the air conditioner is a non-defrosting mode, and The air conditioner is separated from the defrosting end time by a preset time.
  • the four-way valve fault detection method is as shown in FIG. 8 and includes:
  • Step 802 Determine whether the current condition of the air conditioner meets the preset condition, and when the current condition of the air conditioner meets the preset condition, perform step 804, and vice versa, where the air conditioner is located. When the current condition does not meet the preset condition, the four-way valve is not detected for failure.
  • step 804 the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user are detected.
  • Step 806 determining, according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment, whether the current operating mode of the air conditioner is the same as the working mode set by the user, if the current operating mode of the air conditioner Different from the working mode set by the user, it is determined that the four-way valve is in a commutation abnormal state, and vice versa, if the current operating mode of the air conditioner is the same as the working mode set by the user, determining the four-way The valve is in the normal state of commutation and ends the fault detection of the four-way valve.
  • the technical solution judges the current condition of the air conditioner, and only judges the fault when the current condition of the air conditioner meets the preset condition, thereby preventing misjudgment, thereby improving the four-way The accuracy of the valve fault detection method.
  • the amount of the cooling mode or the heating mode generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the outdoor heat exchanger and the outdoor environment, and therefore, in this case
  • the four-way valve fault detection method is used to detect the fault of the four-way valve, it is easy to detect the fault, so that the fault detection of the four-way valve can be improved after the running time of the air conditioner is greater than or equal to the preset time.
  • the accuracy of the four-way valve fault detection method is similar.
  • the air conditioner's operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for the four-way valve fault detection at this time.
  • the method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not running, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the outdoor heat exchanger and the outdoor environment There is no temperature difference between them, and therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve failure detecting method further comprises: after the determining that the four-way valve is in a commutation abnormal state, outputting a four-way valve commutation abnormality signal.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • Step 901 determining whether the current condition of the air conditioner meets a preset condition, if the step is satisfied 902, if not satisfied, directly end the determination; step 902, detecting the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the user-set working mode, if it is detected that the user-set working mode is the cooling mode or the dehumidification mode, Then, in step 903, if it is detected that the working mode set by the user is the heating mode, then go to step 904; step 903, determine whether the temperature T2 of the outdoor heat exchanger is large.
  • step 904 determine outdoor Whether the temperature T2 of the heat exchanger is less than or equal to the sum of the temperature T1 of the outdoor environment and the second preset temperature value b ° C, if T2 ⁇ T1 + b ° C, then go to step 905, if T2 > T1 + b ° C, then the step 906; Step 905, determining that the four-way valve is in the commutation abnormal state, and outputting the four-way valve commutation abnormality signal, and then ending the determination; in step 906, determining that the four-way valve is in the normal commutation state, and then ending the determination.
  • the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to the predetermined running time; the current operating mode of the air conditioner is a non-automatic running mode; the current state of the air conditioner The operation mode is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is separated from the defrost end time by a preset time.
  • the first preset temperature value a and the second preset temperature value b may be selected to be 1 ° C, and when the user-set working mode is the heating mode, if detected
  • the outdoor ambient temperature T1 is 7 ° C
  • the outdoor heat exchanger temperature T2 is 7.5 ° C, that is, T2 ⁇ T1 + 1 ° C, it is considered that the four-way valve has no normal commutation or incomplete reversal, that is, the four-way valve is in the commutation abnormality.
  • the temperature difference of 0.5 degrees Celsius may be the sampling deviation of the system.
  • the temperature T2 of the outdoor heat exchanger is greater than the outdoor ambient temperature T1
  • the four-way valve is not normally commutated or not completely reversing because, If the four-way valve is normally reversed, the temperature of the outdoor heat exchanger should be much larger than the outdoor ambient temperature.
  • step 905 after determining that the four-way valve is in the reversing abnormal state, the four-way valve can be automatically repaired by an alarm device or the like, or by the abnormal signal output device to control the four-way valve maintenance device in the air conditioner. .
  • FIG. 10 is a block diagram showing the structure of a four-way valve failure detecting device 10 according to an embodiment of the present invention.
  • an embodiment of the fourth aspect of the present invention provides a four-way valve failure detecting device 10 for an air conditioner, comprising: a detecting device 102 for detecting the temperature of an indoor heat exchanger and an indoor environment. And a working mode set by the user; the processing device 104 is configured to determine, according to the temperature of the indoor heat exchanger and the temperature of the indoor environment, whether the current operating mode of the air conditioner is working with the user The mode is the same, and when the current operating mode of the air conditioner is different from the working mode set by the user, determining that the four-way valve is in a commutating abnormal state, and in the current operating mode of the air conditioner and the user setting When the predetermined working mode is the same, it is determined that the four-way valve is in the normal state of commutation.
  • the four-way valve fault detecting device 10 can detect the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user, thereby being able to be based on the temperature of the indoor heat exchanger and
  • the temperature of the indoor environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not in accordance with the regulations.
  • the reversing direction that is, the four-way valve is in the state of reversing abnormality, and then the user can be notified in time to repair the four-way valve.
  • the four can be judged.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the processing device 104 is configured to determine the indoor heat exchanger when the detecting device 102 detects that the working mode set by the user is a cooling mode or a humidifying mode. Whether the temperature is greater than or equal to the sum of the temperature of the indoor environment and the first preset temperature value, and when the temperature of the indoor heat exchanger is greater than or equal to the sum of the temperature of the indoor environment and the first preset temperature value Determining that the current operating mode of the air conditioner is different from the operating mode set by the user, and when 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 current operating mode of the air conditioner is the same as the operating mode set by the user; 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 the failure of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the indoor environment is different, specifically, cooling or pumping in the air conditioner.
  • the indoor heat exchanger is equivalent to an evaporator, in which the refrigerant generates heat after evaporation and heat absorption, and the amount of cold produced can only be transferred to the room through heat transfer. Therefore, the indoor cooling capacity is derived from Indoor heat exchanger, according to the law of energy transmission, the temperature of the indoor heat exchanger must be lower than the indoor ambient temperature.
  • the user-set working mode is the cooling mode or the dehumidification mode
  • the indoor heat exchanger The temperature is still higher than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversing or not completely reversing, and then the four-way can be determined.
  • the valve has a fault, but considering the detection error when detecting the temperature of the indoor heat exchanger, if the user sets the working mode to the cooling mode or the dehumidification mode, if the indoor change The temperature of the device is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve.
  • the four-way valve fault detection method provided by the technical solution appropriately considers the detection of the indoor heat exchanger. Detection error at temperature, which prevents the occurrence of false detection due to temperature detection errors Health, and thus improve the accuracy of the four-way valve fault detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the indoor heat exchanger is higher than 1 °C of the indoor ambient temperature, the four-way valve is not reversing or not completely reversing, so that the fault detection caused by the detection error can be avoided, and then It can improve the accuracy of four-way valve fault detection.
  • the processing device 104 is configured to determine whether the temperature of the indoor heat exchanger is less than when the detecting device 102 detects that the operating mode set by the user is the heating mode. And a sum of a temperature of the indoor environment and a second preset temperature value, and when 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, The current operating mode of the air conditioner is different from the working mode set by the user, and when 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 current operating mode of the air conditioner is the same as the working mode set by the user; wherein the second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the indoor heat exchanger.
  • the working mode set by the user when the working mode set by the user 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 working mode set by the user is the heating mode, if the temperature of the indoor heat exchanger is lower than or equal to the indoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the heating mode, so that the four-way valve can be determined. If the four-way valve is in an abnormal state, the detection error of the indoor heat exchanger is also considered.
  • the temperature of the heat exchanger is higher or lower than the indoor ambient temperature, which does not necessarily indicate the abnormality of the four-way valve. Therefore, the four-way valve fault detection method provided by the technical solution also appropriately considers the temperature detection.
  • the error can prevent the occurrence of false detection due to the temperature detection error, thereby improving the accuracy of the four-way valve fault detection method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve is in progress. Only when the temperature of the indoor heat exchanger is lower than 1 °C of the indoor ambient temperature, the four-way valve is not changed. The direction of the four-way valve fault detection can be improved by avoiding faulty fault detection due to detection error.
  • the processing device 104 is further configured to determine whether the current condition of the air conditioner meets a preset condition, and when the current condition of the air conditioner meets the preset condition, the control detects
  • the device 102 detects the temperature of the indoor heat exchanger and the temperature of the indoor environment and the working mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to the predetermined running time;
  • the current operating mode of the air conditioner is a non-automatic operation mode; the current operating mode of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is defrosted
  • the end time is greater than the preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method Specifically, for example, when the air conditioner is just running, the amount of cooling or the amount of heat generated by the air conditioner is still very small, and therefore, it is insufficient to cause a temperature difference between the indoor heat exchanger and the indoor environment, and therefore, in this case,
  • the four-way valve fault detection method to detect the fault of the four-way valve, it is easy to detect the fault, so that the four-way valve fault detection can be improved after the air conditioner running time is greater than or equal to the preset time.
  • the accuracy of the fault detection method in the same way, when the operation mode of the air conditioner is the automatic operation mode, since the air conditioner itself adjusts the working mode at a time, it is not suitable to use the four-way valve fault detection method at this time.
  • the valve is used for fault detection.
  • the air conditioner when the air conditioner is in the air supply mode, the compressor is not running. At this time, the air conditioner does not perform corresponding cooling or heating. Therefore, there is no temperature between the indoor heat exchanger and the indoor environment. Poor, and therefore, it is not suitable to use this method for fault detection of a four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the indoor environment will change due to the change of the operating mode of the air conditioner. Therefore, It is possible to determine the abnormality of the four-way valve commutation simply based on the difference between the temperature of the indoor heat exchanger and the temperature of the indoor environment.
  • the four-way valve failure detecting device 10 further includes: an output device 106, configured to determine, at the processing device 104, that the four-way valve is in a commutation abnormality After the state, the four-way valve commutation abnormality signal is output.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • Fig. 11 is a block diagram showing the structure of a four-way valve failure detecting device 11 according to an embodiment of the present invention.
  • the embodiment of the second aspect of the present invention provides a four-way valve fault detecting device 11 for an air conditioner, comprising: detecting device 112 for detecting temperature and outdoor heat exchange of an indoor heat exchanger The temperature of the device and the operating mode set by the user; the processing device 114 is configured to determine, according to the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger, whether the current operating mode of the air conditioner is related to the user The set working mode is the same, and when the current operating mode of the air conditioner is different from the working mode set by the user, determining that the four-way valve is in a commutating abnormal state, and in the current operating mode of the air conditioner When the working mode set by the user is the same, it is determined that the four-way valve is in a normal state of commutation.
  • the four-way valve fault detecting device 11 can detect the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the working mode set by the user, thereby being The temperature and the temperature of the outdoor heat exchanger determine whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, the four-way valve can be determined.
  • the reversing direction is not in accordance with the regulations, that is, the four-way valve is in the state of reversing abnormality, and then the user can be notified in time to repair the four-way valve.
  • the processing device 114 is configured to determine the indoor heat exchanger when the detecting device 112 detects that the working mode set by the user is a cooling mode or a dehumidifying mode. Whether the temperature is greater than or equal to the temperature of the outdoor heat exchanger, and determining the current operating mode of the air conditioner and the user setting when the temperature of the indoor heat exchanger is greater than or equal to the temperature of the outdoor heat exchanger The working mode is different, and when the temperature of the indoor heat exchanger is less than the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is the same as the working mode set by the user.
  • the process of determining the fault of the four-way valve by using the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger is different, specifically, cooling is performed 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 mode or dehumidification mode.
  • the temperature of the indoor heat exchanger must be lower than the temperature of the outdoor heat exchanger. Therefore, the working mode set by the user is the cooling mode or pumping.
  • the wet 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 current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve is not normally reversed or If the steering is not completely reversed, it can be determined that the four-way valve has a commutation fault.
  • the processing device 114 is configured to determine whether the temperature of the indoor heat exchanger is less than when the detecting device 112 detects that the working mode set by the user is the heating mode. Is equal to the temperature of the outdoor heat exchanger, and when the temperature of the indoor heat exchanger is less than or equal to the temperature of the outdoor heat exchanger, determining a current operating mode of the air conditioner and a working mode set by the user Differently, when the temperature of the indoor heat exchanger is greater than the temperature of the outdoor heat exchanger, it is determined that the current operating mode of the air conditioner is the same as the working mode set by the user.
  • the refrigerant in the outdoor heat exchanger evaporates and absorbs heat, and then the heat source is continuously delivered to the indoor heat exchanger, thereby transferring heat through heat transfer. Dissipated into the room, therefore, the temperature of the indoor heat exchanger must be higher than the temperature of the outdoor heat exchanger.
  • the operating mode set by the user is the heating mode
  • the temperature of the indoor heat exchanger is still lower than or equal to the outdoor
  • the temperature of the heat exchanger is inevitable that the current operating mode of the air conditioner 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 is in a commutation abnormal state.
  • the processing device 114 is further configured to determine whether the current condition of the air conditioner meets a preset condition, and when the current condition of the air conditioner meets the preset condition, the control detects
  • the device 112 detects the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger and the operating mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to the predetermined running time
  • the current operating mode of the air conditioner is a non-automatic operation mode; the current operating mode of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner distance
  • the defrosting end time is greater than the preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner operating mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for using the four-way at this time.
  • the valve fault detection method detects the fault of the four-way valve.
  • the air conditioner is in the air supply mode, the compressor is not operated, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the indoor heat exchanger There is also no temperature difference between the outdoor heat exchanger and the outdoor heat exchanger. Therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to Heating mode, therefore, during the defrosting period or shortly after the defrosting, the temperature of the indoor heat exchanger and the temperature of the outdoor heat exchanger change due to the change of the operating mode of the air conditioner, so It is not possible to determine the abnormality of the four-way valve commutation simply based on the temperature difference between the indoor heat exchanger and the outdoor heat exchanger.
  • the four-way valve failure detecting device 11 further includes: an output device 116, configured to determine, at the processing device 114, that the four-way valve is in a commutation abnormality After the state, the four-way valve commutation abnormality signal is output.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • Fig. 12 is a block diagram showing the structure of a four-way valve failure detecting device 12 according to an embodiment of the present invention.
  • an embodiment of the sixth aspect of the present invention provides a four-way valve failure detecting device 12 for an air conditioner, comprising: detecting device 122 for detecting the temperature of an outdoor heat exchanger and an outdoor environment. And a working mode set by the user; the processing device 124 is configured to determine, according to the temperature of the outdoor heat exchanger and the temperature of the outdoor environment, whether the current operating mode of the air conditioner is working with the user The mode is the same, and when the current operating mode of the air conditioner is different from the working mode set by the user, determining that the four-way valve is in a commutating abnormal state, and in the current operating mode of the air conditioner and the user setting When the predetermined working mode is the same, it is determined that the four-way valve is in the normal state of commutation.
  • the four-way valve fault detecting device 12 can detect the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user, thereby being able to be based on the temperature of the outdoor heat exchanger and
  • the temperature of the outdoor environment determines whether the current operating mode of the air conditioner is the same as the working mode set by the user, so that when the current operating mode of the air conditioner is different from the working mode set by the user, it can be determined that the four-way valve is not in accordance with the regulations.
  • the reversing direction that is, the four-way valve is in the state of reversing abnormality, and then the user can be notified in time to repair the four-way valve.
  • the four can be judged.
  • the valve has been reversing according to the regulations, that is, the four-way valve is in the normal state of commutation, so no treatment can be done.
  • the processing device 124 is configured to determine the outdoor heat exchanger when the detecting device 122 detects that the working mode set by the user is a cooling mode or a humidifying mode. Whether the temperature is greater than or equal to the sum of the temperature of the outdoor environment and the first preset temperature value, and when the temperature of the outdoor heat exchanger is greater than or equal to the sum of the temperature of the outdoor environment and the first preset temperature value Determining that the current operating mode of the air conditioner is different from the operating mode set by the user, and when the temperature of the outdoor heat exchanger is less than the sum of the temperature of the outdoor environment and the first preset temperature value Determining that the current operating mode of the air conditioner is the same as the operating mode set by the user; wherein the first preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the air conditioner performs the cooling mode or
  • the outdoor heat exchanger is equivalent to a condenser, which dissipates the heat in the room to the outdoor environment through the condensation heat of the refrigerant.
  • the air conditioner Only when the cooling mode or the dehumidification mode can be realized, that is, when the air conditioner is in the cooling mode or the dehumidification mode, the temperature of the outdoor heat exchanger must be lower than the outdoor ambient temperature, and therefore, the user setting
  • the working mode is the cooling mode or the dehumidification mode
  • the temperature of the outdoor heat exchanger is higher than or equal to the outdoor ambient temperature, it is inevitable that the current operating mode of the air conditioner is not the cooling mode or the dehumidification mode, that is, the four-way valve.
  • the four-way valve may be faulty, but the detection error when detecting the temperature of the outdoor heat exchanger is taken into consideration. Therefore, the operating mode set by the user is the cooling mode or In the dehumidification mode, 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 is abnormally commutated. Therefore, the four-way valve fault detection method provided by the technical solution is appropriate.
  • the detection error when detecting the temperature of the outdoor heat exchanger is considered, thereby preventing the occurrence of a detection error due to the temperature detection error, thereby improving the accuracy of the four-way valve failure detection method.
  • the first preset temperature value is greater than or equal to 1 ° C.
  • the failure detection of the four-way valve In the process, only when the temperature of the outdoor heat exchanger is higher than the outdoor ambient temperature by 1 ° C and above, it can be explained that the four-way valve is not reversing or not completely reversing, thereby avoiding erroneous fault detection due to detection error. In turn, the accuracy of the four-way valve fault detection can be improved.
  • the processing device 124 is configured to determine whether the temperature of the outdoor heat exchanger is less than when the detecting device 122 detects that the operating mode set by the user is the heating mode. And a sum equal to a temperature of the outdoor environment and a second preset temperature value, and when the temperature of the outdoor heat exchanger is less than or equal to a sum of a temperature of the outdoor environment and the second preset temperature value, The current operating mode of the air conditioner is different from the working mode set by the user, and when the temperature of the outdoor heat exchanger is greater than the sum of the temperature of the outdoor environment and the second preset temperature value, The current operating mode of the air conditioner is the same as the working mode set by the user; wherein the second preset temperature value is greater than or equal to a detection error value when detecting the temperature of the outdoor heat exchanger.
  • the outdoor heat exchanger when the working mode set by the user is the heating mode, the outdoor heat exchanger continuously transfers heat to the room through the evaporation heat absorption of the refrigerant, that is, the outdoor heat exchanger continuously draws from the outdoor environment.
  • the heat is such that 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 current operating mode of the air conditioner 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 is in an abnormal state, but also considering the detection of the outdoor heat exchanger.
  • the four-way valve fault detection method provided by the technical solution also appropriately considers the error of temperature detection, thereby preventing the occurrence of detection error due to the temperature detection error, thereby improving the detection of the four-way valve failure. The accuracy of the method.
  • the second preset temperature value is greater than or equal to 1 ° C.
  • 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, the fault detection of the four-way valve is in progress. Only when the temperature of the outdoor heat exchanger is 1 ° C lower than the outdoor ambient temperature and more can the four-way valve not be reversing or not completely reversing, so as to avoid erroneous fault detection due to detection error, and then Improve the accuracy of four-way valve fault detection.
  • the processing device 124 is further configured to determine whether the current condition that the air conditioner is in the current condition meets the preset condition, and control the detection when the current condition of the air conditioner meets the preset condition
  • the device 122 detects the temperature of the outdoor heat exchanger and the temperature of the outdoor environment and the working mode set by the user; wherein the preset condition includes at least one of the following conditions: the running time of the air conditioner is greater than or equal to the predetermined running time;
  • the current operating mode of the air conditioner is a non-automatic operation mode; the current operating mode of the air conditioner is a non-supply operation mode; the current operation mode of the air conditioner is a non-defrosting mode, and the air conditioner is defrosted
  • the end time is greater than the preset time.
  • the current condition of the air conditioner is judged, and the fault determination is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the accuracy of the test method is performed only when the current condition of the air conditioner satisfies the preset condition, thereby preventing misjudgment and further improving the four-way valve failure.
  • the air conditioner's operation mode is the automatic operation mode, since the air conditioner itself adjusts the working mode from time to time, it is not suitable for the four-way valve fault detection at this time.
  • the method detects the fault of the four-way valve.
  • the air conditioner when the air conditioner is in the air supply mode, the compressor is not running, and the air conditioner does not perform the corresponding cooling mode or heating mode, therefore, the outdoor heat exchanger and the outdoor environment There is no temperature difference between them, and therefore, it is not suitable to use this method for fault detection of the four-way valve.
  • the four-way valve fault detection method to detect the fault of the four-way valve, because the essence of defrosting is to adjust the working mode of the air conditioner to the heating mode, therefore, During the defrosting period or shortly after the defrosting, the temperature of the outdoor heat exchanger and the temperature of the outdoor environment may change due to the change of the operating mode of the air conditioner. Therefore, it is not possible to simply change according to the outdoor. The difference between the temperature of the heater and the temperature of the outdoor environment determines that the four-way valve is abnormally commutated.
  • the four-way valve failure detecting device 12 further includes: an output device 126, configured to determine, at the processing device 124, that the four-way valve is in a commutation abnormality After the state, the four-way valve commutation abnormality signal is output.
  • an alarm output device such as an alarm device or a display screen
  • it is determined that the four-way valve is in a reversing abnormal state that is, after the reversing or not completely reversing, the sound, light, and text are emitted.
  • Various prompts, etc. in order to prompt the user that the four-way valve of the air conditioner is in an abnormal state, thereby facilitating the user to repair the air conditioner in time, and on the other hand, generating and outputting the four-way valve through the signal output device Abnormal signal, so that the air conditioner automatically repairs the four-way valve according to the received four-way valve reversal abnormal signal.
  • an embodiment of a seventh aspect of the present invention provides an air conditioner, as shown in FIG. 13 , including the four-way valve fault detecting apparatus 10 provided by any one of the fourth aspects, or As shown in FIG. 14, the four-way valve fault detecting device 11 provided by any one of the fifth aspects, or as shown in FIG. 15, includes the four-way valve fault detecting device 12 provided in any one of the sixth aspects. .
  • the air conditioner provided by the embodiment of the seventh aspect of the present invention includes the four-way valve fault detecting device 10 according to any one of the fourth aspects, or the four-way valve fault detecting according to any one of the fifth aspects
  • the beneficial effects of the fault detecting device will not be described here.
  • 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

一种四通阀故障检测方法、四通阀故障检测装置及空调器,检测方法包括检测室内换热器和室内环境的温度或检测室内换热器和室外换热器的温度或检测室外换热器和室外环境的温度及用户设定的工作模式(102);根据检测的温度判断空调器的当前运行模式是否与用户设定的工作模式相同,若不同则判定四通阀处于换向异常状态,若相同则判定四通阀处于换向正常状态(104)。

Description

四通阀故障检测方法、四通阀故障检测装置及空调器
本申请要求于2016年5月5日提交中国专利局、申请号为201610298391.9、发明名称为“四通阀故障检测方法、四通阀故障检测装置及空调器”、于2016年5月5日提交中国专利局、申请号为201610298344.4、发明名称为“四通阀故障检测方法、四通阀故障检测装置及空调器”、于2016年5月5日提交中国专利局、申请号为201610298345.9、发明名称为“四通阀故障检测方法、四通阀故障检测装置及空调器”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及空调技术领域,具体而言,涉及一种四通阀故障检测方法、四通阀故障检测装置及空调器。
背景技术
现有的冷暖空调器均采用四通阀换向进行模式切换,使用频率比较高,但随着空调器的运行,空调器会产生异物,比如:压缩机缸体磨损颗粒,系统焊渣等,虽然大多数空调器中均设置有过滤网、过滤器等用于隔离异物,但仍有一些异物因产生位置特殊,或直径较小等原因不能够被滤网隔离,因此,该类异物极易进入到四通阀活塞内,而造成四通阀发生不换向或不完全换向的故障。同时,四通阀不换向或不完全换向的故障导致空调器不能正常工作时,其维修工作量非常大。
因此,如何设计出一种能够判断出四通阀是否发生故障并能够在四通阀发生故障后指导空调器的售后维护的四通阀故障检测方法成为目前亟待解决的问题。
发明内容
本发明旨在至少解决现有技术或相关技术中存在的技术问题之一。
因此,本发明的一个目的在于提供了一种四通阀故障检测方法。
因此,本发明的另一个目的在于提供了一种四通阀故障检测装置。
本发明的再一个目的在于提供了一种包括上述四通阀故障检测装置的空调器。
有鉴于此,本发明第一方面的实施例提供了一种四通阀故障检测方法,包括:检测室内换热器的温度和室内环境的温度及用户设定的工作模式;根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第一方面的实施例提供的四通阀故障检测方法,通过检测室内换热器的温度和室内环境的温度及用户设定的工作模式,从而可根据室内换热器的温度和室内环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,若所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测 误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室内环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷或抽湿时,室内换热器相当于一个蒸发器,其内的冷媒在蒸发吸热后产生冷量,而其产生的冷量只能够通过热传递而传递到室内,因此,室内的冷量来源于室内换热器,而根据能量的传递定律可知,室内换热器的温度必然要低于室内环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室内环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室内换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的高于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成对四通阀错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,若所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中, 所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室内环境的热量来源于室内换热器,因此,室内换热器的温度必然要高于室内环境的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室内环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的低于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室内环境的温度及用户设定的工作模式的步骤;其中,所述预设条件至少包括下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷量或制热量还非常小,因此,不足于造成室内换热器和室内环境形成温度差,因此,在该种情况下若利用该四通阀故障检测方法对四通阀进行 故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷或制热,因此,室内换热器和室内环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室内环境的温度的改变,因此,不能够单纯地根据室内换热器的温度和室内环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
本发明第二方面的实施例提供了一种四通阀故障检测方法,包括:检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第二方面的实施例提供的四通阀故障检测方法,通过检测室内换热器的温度和室外换热器的温度及用户设定的工作模式,从而可根据室内换热器的温度和室外换热器的温度判断出空调器当前运行模式是否与用户设定 的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否大于等于所述室外换热器的温度,若所述室内换热器的温度大于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室外换热器的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室内换热器为蒸发器,室外换热器为冷凝器,从而通过冷媒在室内换热器中的不断蒸发吸热及在室外换热器中的不断冷凝散热而将室内的热量不断地散出到室外,进而达到制冷模式或抽湿模式的目的。因此根据能量的传递定律可知,在空调器制冷模式或抽湿模式时,室内换热器的温度必然要低于室外换热器的温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了换向故障。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否小于等于所述室外换热器的温度,若所述室内换热器的温度小于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度大于所述室外换热器 的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器中的冷媒蒸发吸热后将热量源源不断地输送到室内换热器中,进而通过热传递散将热量散发到室内,因此,室内换热器的温度必然要高于室外换热器的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于换向异常状态。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室外换热器的温度及用户设定的工作模式的步骤;其中,所述预设条件包括至少下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室内换热器和室外换热器之间形成温度差,因此,在该种情况下若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室内换热器和室外换热器之间也不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作 模式的变动,而引起室内换热器的温度和室外换热器的温度的改变,因此,不能够单纯地根据室内换热器与室外换热器之间的温度差就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
本发明第三方面的实施例提供了一种四通阀故障检测方法,包括:检测室外换热器的温度和室外环境的温度及用户设定的工作模式;根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第三方面的实施例提供的四通阀故障检测方法,通过检测室外换热器的温度和室外环境的温度及用户设定的工作模式,从而可根据室外换热器的温度和室外环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设 温度值之和,若所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室外换热器的温度和室外环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室外换热器相当于一个冷凝器,其通过冷媒的冷凝散热将室内的热量散发到室外环境中,因此,只有室外换热器的温度低于室外环境的温度时,空调器才能够实现制冷模式或抽湿模式,即空调器制冷模式或抽湿模式时,室外换热器的温度必然要低于室外环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度还高于或等于室外环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室外换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的高1℃及以上时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器 的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,若所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器通过冷媒的蒸发吸热不断地将热量输送到室内,即室外换热器源源不断地从室外环境中吸取热量,从而使得室外换热器的高于室外环境的温度,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度还低于等于室外环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的低1℃及更多时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室外换热器的温度和室外环境的温度及用户设定的工作模式的步骤;其中,所述预设条件包括下列条件至少之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运 行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室外换热器和室外环境形成温度差,因此,在该种情况下若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测结果,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室外换热器和室外环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室外换热器的温度和室外环境的温度的改变,因此,不能够单纯地根据室外换热器的温度和室外环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
本发明第四方面的实施例提供了一种四通阀故障检测装置,用于空调器,包括:检测装置,用于检测室内换热器的温度和室内环境的温度及用户设定的 工作模式;处理装置,用于根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第四方面的实施例提供的四通阀故障检测装置,通过检测室内换热器的温度和室内环境的温度及用户设定的工作模式,从而可根据室内换热器的温度和室内环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,并在所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室内环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷或抽湿时,室内换热器相当于一个蒸发器,其内的冷媒在蒸发吸热后产生冷量,而其产生的冷量只能够通过热传递而传递到室内,因此,室内的冷量来源于室内换热器,而根据能量的传递定律可知,室内换热器的温度必然要低于室内环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室内环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即 可判定出四通阀出现了故障,但考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室内换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的高于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,并在所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室内环境的热量来源于室内换热器,因此,室内换热器的温度必然要高于室内环境的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室内环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发 生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的低于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
优选地,所述处理装置还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室内换热器的温度和室内环境的温度及用户设定的工作模式;其中,所述预设条件至少包括下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷量或制热量还非常小,因此,不足于造成室内换热器和室内环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷或制热,因此,室内换热器和室内环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的 温度和室内环境的温度的改变,因此,不能够单纯地根据室内换热器的温度和室内环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测装置还包括:输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
本发明第五方面的实施例提供了一种四通阀故障检测装置,用于空调器,包括:检测装置,用于检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;处理装置,用于根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第五方面的实施例提供的四通阀故障检测装置,通过检测室内换热器的温度和室外换热器的温度及用户设定的工作模式,从而可根据室内换热器的温度和室外换热器的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室外换热器的温度,并在所述室内换热器的温度大于等于所 述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室外换热器的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室内换热器为蒸发器,室外换热器为冷凝器,从而通过冷媒在室内换热器中的不断蒸发吸热及在室外换热器中的不断冷凝散热而将室内的热量不断地散出到室外,进而达到制冷模式或抽湿模式的目的。因此根据能量的传递定律可知,在空调器制冷模式或抽湿模式时,室内换热器的温度必然要低于室外换热器的温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了换向故障。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室外换热器的温度,并在所述室内换热器的温度小于等于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器中的冷媒蒸发吸热后将热量源源不断地输送到室内换热器中,进而通过热传递散将热量散发到室内,因此,室内换热器的温度必然要高于室外换热器的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于换向异常状态。
在上述技术方案中,优选地,所述处理装置还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;其中,所述预设条件包括至少下列条件之一:所述空调器的运行时间 大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室内换热器和室外换热器之间形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室内换热器和室外换热器之间也不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室外换热器的温度的改变,因此,不能够单纯地根据室内换热器与室外换热器的温度之间的温度差就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测装置还包括:输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通 阀进行自动维修。
本发明第六方面的实施例提供了一种四通阀故障检测装置,用于空调器,包括:检测装置,用于检测室外换热器的温度和室外环境的温度及用户设定的工作模式;处理装置,用于根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第六方面的实施例提供的四通阀故障检测装置,通过检测室外换热器的温度和室外环境的温度及用户设定的工作模式,从而可根据室外换热器的温度和室外环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设温度值之和,并在所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室外换热器的温度和室外环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室外换热器相当于一个冷凝器,其通过冷媒的冷凝散热将室内的热量散发到室外环境中,因此,只有室外换热器的温度低于室外环境的温度时,空调器才能够实现制冷模式或抽湿模式,即空调器制冷模式或 抽湿模式时,室外换热器的温度必然要低于室外环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度还高于或等于室外环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室外换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的高1℃及以上时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,所述处理装置用于在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,并在所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器通过冷媒的蒸发吸热不断地将热量输送到室内,即室外换热器源源不断地从室外环境中吸取热量,从而使得室外换热器的高于室外环境的温度,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度还低于等于室外环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未 换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的低1℃及更多时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
优选地,所述处理装置还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室外换热器的温度和室外环境的温度及用户设定的工作模式;其中,所述预设条件包括下列条件至少之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室外换热器和室外环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并 不进行相应的制冷模式或制热模式,因此,室外换热器和室外环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室外换热器的温度和室外环境的温度的改变,因此,不能够单纯地根据室外换热器的温度和室外环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测装置还包括:输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
本发明第七方面的实施例提供了一种空调器,包括第四方面、第五方面、第六方面中任一项实施例所述的四通阀故障检测装置。
本发明第七方面的实施例提供的空调器,包括上述任一项实施例提供的四通阀故障检测装置,因此,具有上述任一项实施例提供的四通阀故障检测装置的有益效果,在此不再赘述。
本发明的附加方面和优点将在下面的描述部分中变得明显,或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解,其中:
图1示出了根据本发明的一个实施例的四通阀故障检测方法的流程示意图;
图2示出了根据本发明的一个实施例的四通阀故障检测方法的另一流程示意图;
图3示出了根据本发明的一个实施例的四通阀故障检测方法的再一流程示意图;
图4示出了根据本发明的另一个实施例的四通阀故障检测方法的流程示意图;
图5示出了根据本发明的另一个实施例的四通阀故障检测方法的另一流程示意图;
图6示出了根据本发明的另一个实施例的四通阀故障检测方法的再一流程示意图;
图7示出了根据本发明的再一个实施例的四通阀故障检测方法的流程示意图;
图8示出了根据本发明的再一个实施例的四通阀故障检测方法的另一流程示意图;
图9示出了根据本发明的再一个实施例的四通阀故障检测方法的再一流程示意图;
图10示出了根据本发明的一个实施例的四通阀故障装置的结构示意框图;
图11示出了根据本发明的另一个实施例的四通阀故障装置的结构示意框图;
图12示出了根据本发明的再一个实施例的四通阀故障装置的结构示意框图;
图13示出了根据本发明的一个实施例的空调器的结构示意框图;
图14示出了根据本发明的另一个实施例的空调器的结构示意框图;
图15示出了根据本发明的再一个实施例的空调器的结构示意框图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点,下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是,在不冲突的情 况下,本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是,本发明还可以采用其他不同于在此描述的其他方式来实施,因此,本发明的保护范围并不受下面公开的具体实施例的限制。
下面参照图1描述根据本发明一些实施例的四通阀故障检测方法。
本发明第一方面的实施例提供了一种四通阀故障检测方法,如图1所示,包括:步骤102,检测室内换热器的温度和室内环境的温度及用户设定的工作模式;步骤104,根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第一方面的实施例提供的四通阀故障检测方法,通过检测室内换热器的温度和室内环境的温度及用户设定的工作模式,从而可根据室内换热器的温度和室内环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,若所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测 误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室内环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷或抽湿时,室内换热器相当于一个蒸发器,其内的冷媒在蒸发吸热后产生冷量,而其产生的冷量只能够通过热传递而传递到室内,因此,室内的冷量来源于室内换热器,而根据能量的传递定律可知,室内换热器的温度必然要低于室内环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室内环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室内换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的高于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,若所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中, 所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室内环境的热量来源于室内换热器,因此,室内换热器的温度必然要高于室内环境的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室内环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的低于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室内环境的温度及用户设定的工作模式的步骤;其中,所述预设条件至少包括下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,具体地,所述四通阀故障检测方法如图2所示,包括:
步骤202,判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,执行步骤204,反之,在所述空调器所处的当前条件不满足预设条件时,不对四通阀进行故障检测。
步骤204,检测室内换热器的温度和室内环境的温度及用户设定的工作模 式。
步骤206,根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,反之,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态,并结束四通阀的故障检测。
该技术方案对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷量或制热量还非常小,因此,不足于造成室内换热器和室内环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷或制热,因此,室内换热器和室内环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室内环境的温度的改变,因此,不能够单纯地根据室内换热器的温度和室内环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输 出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
下面结合图3来具体描述根据本发明的一个实施例提供的四通阀故障检测方法,其中,其具体包括以下步骤:步骤301,判断所述空调器所处的当前条件是否满足预设条件若满足转步骤302,若不满足,直接结束判断;步骤302,检测室内换热器的温度和室内环境的温度及用户设定的工作模式,若检测出用户设定的工作模式为制冷模式或抽湿模式,则转步骤303,若检测出用户设定的工作模式为制热模式,则转步骤304;步骤303,判断室内换热器的温度T2是否大于等于室内环境的温度T1与第一预设温度值a℃之和,若T2≥T1+a℃,则转步骤305,若T2<T1+a℃,则转步骤306;步骤304,判断室内换热器的温度T2是否小于等于室内环境的温度T1与第二预设温度值b℃之和,若T2≤T1+b℃,则转步骤305,若T2>T1+b℃,则转步骤306;步骤305,判定四通阀处于换向异常状态,并输出四通阀换向异常信号,然后结束判断;步骤306,判定四通阀处于换向正常状态,然后结束判断。
其中,在步骤301中,所述预设条件至少包括下列条件之一:空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在步骤303和步骤304中,具体地,比如,第一预设温度值a和第二预设温度值b可选取1℃,则当用户设定的工作模式为制热模式时,若检测出室内环境温度T1为15℃,室内换热器的温度T2为15.5℃,即T2<T1+1℃,则认为四通阀没有正常换向或未完全换向,即四通阀处于换向异常状态,此时,0.5摄氏度的温差有可能为系统采样偏差,因此,虽然室内换热器的温度T2大于室内环境温度T1,但依旧判定四通阀没有正常换向或未完全换向,因为,若四通阀正常换向的话,室内换热器的温度应该会远远大于室内环境温度。
此外,在步骤305中,判定四通阀处于换向异常状态后,还可通过报警装置等向用户报警或通过异常信号输出装置控制空调器内的四通阀维修装置对四通阀进行自动维修。
下面参照图4描述根据本发明另一些实施例的提供四通阀故障检测方法。
本发明第二方面的实施例提供了一种四通阀故障检测方法,如图4所示,包括:步骤402,检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;步骤404,根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第二方面的实施例提供的四通阀故障检测方法,通过检测室内换热器的温度和室外换热器的温度及用户设定的工作模式,从而可根据室内换热器的温度和室外换热器的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否大于等于所述室外换热器的温度,若所述室内换热器的温度大于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室外换热器的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室内换热器为蒸发器,室外换热器为冷凝器,从而通过冷媒在室内换热器中的不断蒸发吸热及在室外换热器中的不断冷凝散热而将室内的热量不断地散出到室外,进而达到制冷模式或抽湿模式的目的。因此根据能量的传递定律可知,在空调器制冷模式或抽湿模式时,室内换热器 的温度必然要低于室外换热器的温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了换向故障。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室内换热器的温度是否小于等于所述室外换热器的温度,若所述室内换热器的温度小于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度大于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器中的冷媒蒸发吸热后将热量源源不断地输送到室内换热器中,进而通过热传递散将热量散发到室内,因此,室内换热器的温度必然要高于室外换热器的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于换向异常状态。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室外换热器的温度及用户设定的工作模式的步骤;其中,所述预设条件包括至少下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,具体地,所述四通阀故障检测方法如图5所示,包括:
步骤502,判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,执行步骤504,反之,在所述空调器所处的当前条件不满足预设条件时,不对四通阀进行故障检测。
步骤504,检测室内换热器的温度和室外换热器的温度及用户设定的工作 模式。
步骤506,根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,反之,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态,并结束四通阀的故障检测。
该技术方案对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室内换热器和室外换热器之间形成温度差,因此,在该种情况下若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室内换热器和室外换热器之间也不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室外换热器的温度的改变,因此,不能够单纯地根据室内换热器与室外换热器之间的温度差就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输 出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
下面结合图6来具体描述根据本发明的另一个实施例提供四通阀故障检测方法,具体包括以下步骤:步骤601,判断所述空调器所处的当前条件是否满足预设条件若满足转步骤602,若不满足,直接结束判断;步骤602,检测室内换热器的温度和室外换热器的温度及用户设定的工作模式,若检测出用户设定的工作模式为制冷模式或抽湿模式,则转步骤603,若检测出用户设定的工作模式为制热模式,则转步骤604;步骤603,判断室内换热器的温度T1是否大于等于室外换热器的温度T2,若T1≥T2,则转步骤605,若T1<T2,则转步骤606;步骤604,判断室内换热器的温度T1是否小于等于室外换热器的温度T2,若T1≤T2,则转步骤605,若T1>T2,则转步骤606;步骤605,判定四通阀处于换向异常状态,并输出四通阀换向异常信号,然后结束判断;步骤606,判定四通阀处于换向正常状态,然后结束判断。
其中,在步骤601中,所述预设条件包括至少下列条件之一:空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在步骤604中,具体地,比如当用户设定的工作模式为制热模式时,若检测出室内换热器的温度T1为15℃,室外换热器的温度T2为16℃,即T1<T2,则认为四通阀没有正常换向或未完全换向,即四通阀处于换向异常状态,因为,若四通阀正常换向的话,室内换热器的温度应该大于室外换热器的温度。
此外,在步骤605中,判定四通阀处于换向异常状态后,还可通过报警装置等向用户报警或通过异常信号输出装置控制空调器内的四通阀维修装置对四通阀进行自动维修。
本发明第三方面的实施例提供了一种四通阀故障检测方法,如图7所示,包括:步骤702,检测室外换热器的温度和室外环境的温度及用户设定的工作模式;步骤704,根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状 态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
根据本发明第一方面的实施例提供的四通阀故障检测方法,通过检测室外换热器的温度和室外环境的温度及用户设定的工作模式,从而可根据室外换热器的温度和室外环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设温度值之和,若所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室外换热器的温度和室外环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室外换热器相当于一个冷凝器,其通过冷媒的冷凝散热将室内的热量散发到室外环境中,因此,只有室外换热器的温度低于室外环境的温度时,空调器才能够实现制冷模式或抽湿模式,即空调器制冷模式或抽湿模式时,室外换热器的温度必然要低于室外环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度还高于或等于室外环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑 到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室外换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的高1℃及以上时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,当检测出所述用户设定的工作模式为制热模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:判段所述室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,若所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器通过冷媒的蒸发吸热不断地将热量输送到室内,即室外换热器源源不断地从室外环境中吸取热量,从而使得室外换热器的高于室外环境的温度,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度还低于等于室外环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异 常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的低1℃及更多时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:判断所述空调器所处的当前条件是否满足预设条件;当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室外换热器的温度和室外环境的温度及用户设定的工作模式的步骤;其中,所述预设条件包括下列条件至少之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,具体地,所述四通阀故障检测方法如图8所示,包括:
步骤802,判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,执行步骤804,反之,在所述空调器所处的当前条件不满足预设条件时,不对四通阀进行故障检测。
步骤804,检测室外换热器的温度和室外环境的温度及用户设定的工作模式。
步骤806,根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,反之,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态,并结束四通阀的故障检测。
该技术方案对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通 阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室外换热器和室外环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室外换热器和室外环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室外换热器的温度和室外环境的温度的改变,因此,不能够单纯地根据室外换热器的温度和室外环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,所述四通阀故障检测方法还包括:在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
下面结合图9描述根据本发明的另一个实施例的所述四通阀故障检测方法,具体包括以下步骤:步骤901,判断所述空调器所处的当前条件是否满足预设条件若满足转步骤902,若不满足,直接结束判断;步骤902,检测室外换热器的温度和室外环境的温度及用户设定的工作模式,若检测出用户设定的工作模式为制冷模式或抽湿模式,则转步骤903,若检测出用户设定的工作模式为制热模式,则转步骤904;步骤903,判断室外换热器的温度T2是否大 于等于室外环境的温度T1与第一预设温度值a℃之和,若T2≥T1+a℃,则转步骤905,若T2<T1+a℃,则转步骤906;步骤904,判断室外换热器的温度T2是否小于等于室外环境的温度T1与第二预设温度值b℃之和,若T2≤T1+b℃,则转步骤905,若T2>T1+b℃,则转步骤906;步骤905,判定四通阀处于换向异常状态,并输出四通阀换向异常信号,然后结束判断;步骤906,判定四通阀处于换向正常常状态,然后结束判断。
其中,在步骤901中,所述预设条件包括下列条件至少之一:空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在步骤903和步骤904中,具体地,比如,第一预设温度值a和第二预设温度值b可选取1℃,则当用户设定的工作模式为制热模式时,若检测出室外环境温度T1为7℃,室外换热器的温度T2为7.5℃,即T2<T1+1℃,则认为四通阀没有正常换向或未完全换向,即四通阀处于换向异常状态,此时,0.5摄氏度的温差有可能为系统采样偏差,因此,虽然室外换热器的温度T2大于室外环境温度T1,但依旧判定四通阀没有正常换向或未完全换向,因为,若四通阀正常换向的话,室外换热器的温度应该会远远大于室外环境温度。
此外,在步骤905中,判定四通阀处于换向异常状态后,还可通过报警装置等向用户报警或通过异常信号输出装置控制空调器内的四通阀维修装置对四通阀进行自动维修。
图10示出了根据本发明的一个实施例的四通阀故障检测装置10的结构示意框图。
如图10所示,本发明第四方面的实施例提供了一种四通阀故障检测装置10,用于空调器,包括:检测装置102,用于检测室内换热器的温度和室内环境的温度及用户设定的工作模式;处理装置104,用于根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第四方面的实施例提供的四通阀故障检测装置10,通过检测室内换热器的温度和室内环境的温度及用户设定的工作模式,从而可根据室内换热器的温度和室内环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置104用于在所述检测装置102检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,并在所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室内环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷或抽湿时,室内换热器相当于一个蒸发器,其内的冷媒在蒸发吸热后产生冷量,而其产生的冷量只能够通过热传递而传递到室内,因此,室内的冷量来源于室内换热器,而根据能量的传递定律可知,室内换热器的温度必然要低于室内环境温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室内环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室内换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发 生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的高于1℃时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,所述处理装置104用于在所述检测装置102检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,并在所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室内环境的热量来源于室内换热器,因此,室内换热器的温度必然要高于室内环境的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室内环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室内换热器的温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度越高于或越低于室内环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现错误检测的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室内换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室内换热器的温度比室内环境温度的低于1℃时才能说明四通阀未换 向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,处理装置104还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置102检测室内换热器的温度和室内环境的温度及用户设定的工作模式;其中,所述预设条件至少包括下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷量或制热量还非常小,因此,不足于造成室内换热器和室内环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷或制热,因此,室内换热器和室内环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室内环境的温度的改变,因此,不能够单纯地根据室内换热器的温度和室内环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,如图10所示,所述四通阀故障检测装置10还包括:输出装置106,用于在所述处理装置104判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
图11示出了根据本发明的一个实施例的四通阀故障检测装置11的结构示意框图。
如图11所示,本发明第二方面的实施例提供了一种四通阀故障检测装置11,用于空调器,包括:检测装置112,用于检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;处理装置114,用于根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第一方面的实施例提供的四通阀故障检测装置11,通过检测室内换热器的温度和室外换热器的温度及用户设定的工作模式,从而可根据室内换热器的温度和室外换热器的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置114用于在所述检测装置112检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室外换热器的温度,并在所述室内换热器的温度大于等于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,用户设定的工作模式不同时,在利用室内换热器的温度和室外换热器的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室内换热器为蒸发器,室外换热器为冷凝器,从而通过冷媒在室内换热器中的不断蒸发吸热及在室外换热器中的不断冷凝散热而将室内的热量不断地散出到室外,进而达到制冷模式或抽湿模式的目的。因此根据能量的传递定律可知,在空调器制冷模式或抽湿模式时,室内换热器的温度必然要低于室外换热器的温度,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室内换热器的温度还高于或等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了换向故障。
在上述技术方案中,具体地,所述处理装置114用于在所述检测装置112检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室外换热器的温度,并在所述室内换热器的温度小于等于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器中的冷媒蒸发吸热后将热量源源不断地输送到室内换热器中,进而通过热传递散将热量散发到室内,因此,室内换热器的温度必然要高于室外换热器的温度,因此,在用户设定的工作模式为制热模式时,若室内换热器的温度还低于等于室外换热器的温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于换向异常状态。
在上述技术方案中,优选地,处理装置114还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置112检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;其中,所述预设条件包括至少下列条件之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室内换热器和室外换热器之间形成温度差,因此,在该种情况下若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室内换热器和室外换热器之间也不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室内换热器的温度和室外换热器的温度的改变,因此,不能够单纯地根据室内换热器与室外换热器之间的温度差就判定四通阀换向异常。
在上述技术方案中,优选地,如图11所示,所述四通阀故障检测装置11还包括:输出装置116,用于在所述处理装置114判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
图12示出了根据本发明的一个实施例的四通阀故障检测装置12的结构示意框图。
如图12所示,本发明第六方面的实施例提供了一种四通阀故障检测装置12,用于空调器,包括:检测装置122,用于检测室外换热器的温度和室外环境的温度及用户设定的工作模式;处理装置124,用于根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
根据本发明第六方面的实施例提供的四通阀故障检测装置12,通过检测室外换热器的温度和室外环境的温度及用户设定的工作模式,从而可根据室外换热器的温度和室外环境的温度判断出空调器当前运行模式是否与用户设定的工作模式相同,从而在空调器当前运行模式与用户设定的工作模式不相同时,即可判断出四通阀并未按规定换向,即四通阀处于换向异常状态,进而即可及时通知用户对四通阀进行维修,当然,在空调器的当前运行模式与用户设定的工作模式相同时,即可判断出四通阀已经按规定换向,即四通阀处于换向正常状态,因此可不作任何处理。
在上述技术方案中,具体地,所述处理装置124用于在所述检测装置122检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设温度值之和,并在所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,用户设定的工作模式不同时,在利用室外换热器的温度和室外环境的温度进行四通阀的故障判断过程也不一样,具体地,在空调器进行制冷模式或抽湿模式时,室外换热器相当于一个冷凝器,其通过冷媒的冷凝散热将室内的热量散发到室外环境中,因此,只有室外换热器的温度低于室外环境的温度时,空调器才能够实现制冷模式或抽湿模式,即空调器制冷模式或抽湿模式时,室外换热器的温度必然要低于室外环境温度,因此,在用户设定 的工作模式为制冷模式或抽湿模式时,若室外换热器的温度还高于或等于室外环境温度,则必然可知,空调器的当前运行模式不是制冷模式或抽湿模式,即四通阀未正常换向或未完全换向,进而即可判定出四通阀出现了故障,但考虑到检测室外换热器的温度时的检测误差,因此,在用户设定的工作模式为制冷模式或抽湿模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法适当地考虑了检测室外换热器的温度时的检测误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第一预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制冷模式或抽湿模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的高1℃及以上时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,具体地,所述处理装置124用于在所述检测装置122检测出所述用户设定的工作模式为制热模式时,判段所述室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,并在所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
在该技术方案中,在用户设定的工作模式为制热模式时,室外换热器通过冷媒的蒸发吸热不断地将热量输送到室内,即室外换热器源源不断地从室外环境中吸取热量,从而使得室外换热器的高于室外环境的温度,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度还低于等于室外环境温度,则必然可知,空调器的当前运行模式不是制热模式,从而即可判定出四通阀未换向或未完全换向,即四通阀处于异常状态,但同样考虑到检测室外换热器的 温度时的检测误差,因此,在用户设定的工作模式为制热模式时,若室外换热器的温度越高于或越低于室外环境温度,其并不一定能够说明四通阀换向异常,因此,该技术方案提供的四通阀故障检测方法也适当地考虑了温度检测的误差,从而可防止因为温度检测误差的原因而出现检测错误的情况发生,进而提高了四通阀故障检测方法的准确性。
在上述技术方案中,优选地,所述第二预设温度值大于等于1℃。
具体地,在现有的空调器中,对室外换热器进行温度采用检测时,一般存在着1℃的正负偏差,因此,在制热模式下,对四通阀的故障检测的过程中,只有在室外换热器的温度比室外环境温度的低1℃及更多时才能说明四通阀未换向或未完全换向,从而可避免由于检测误差而造成错误的故障检测,进而可提高四通阀故障检测的准确性。
在上述技术方案中,优选地,处理装置124还用于判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置122检测室外换热器的温度和室外环境的温度及用户设定的工作模式;其中,所述预设条件包括下列条件至少之一:所述空调器的运行时间大于等于预定运行时间;所述空调器的当前运行模式为非自动运行模式;所述空调器的当前运行模式为非送风运行模式;所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
在该技术方案中,对空调器当前所处的当前条件进行判断,并只有在空调器的当前条件满足预设条件时,才进行故障判断,从而可防止误判,进而可提高四通阀故障检测方法的准确性。具体地,比如,在空调器刚刚运行时,空调器产生的制冷模式量或制热模式量还非常小,因此,不足于造成室外换热器和室外环境形成温度差,因此,在该种情况下,若利用该四通阀故障检测方法对四通阀进行故障检测,则极易出现错误的检测,从而在空调器的运行时间大于等于预设时间后再进行四通阀的故障检测可提高四通阀故障检测方法的准确性,同理,在空调器的运行模式为自动运行模式时,由于空调器自身在对工作模式进行时时调节,因此,此时也不适合利用四通阀故障检测方法对四通阀进行故障检测,此外,在空调器处于送风模式时,压缩机未运行,此时空调器并不进行相应的制冷模式或制热模式,因此,室外换热器和室外环境之间不存在温度差,因而,也不适合利用该方法进行四通阀的故障检测。还有,在除霜期 间内或除霜刚刚结束的短时间内也不适合利用四通阀故障检测方法对四通阀进行故障检测,因为,除霜的本质是将空调器的工作模式调节到制热模式,因此,在除霜期间内或除霜刚刚结束的短时间内,会由于空调器的工作模式的变动,而引起室外换热器的温度和室外环境的温度的改变,因此,不能够单纯地根据室外换热器的温度和室外环境的温度的差值就判定四通阀换向异常。
在上述技术方案中,优选地,如图12所示,所述四通阀故障检测装置12还包括:输出装置126,用于在所述处理装置124判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
在该技术方案中,一方面可通过设置报警器、显示屏等报警输出装置在判定出四通阀处于换向异常状态,即未换向或未完全换向后,发出包括声音、光、文字等在内的多种提示,以便提示用户空调器的四通阀处于异常状态,进而可便于用户及时对空调器进行维修,另一方面,也可通过信号输出装置产生并输出四通阀换向异常信号,以便空调器根据接收到的四通阀换向异常信号对四通阀进行自动维修。
如图13至图15所示,本发明第七方面的实施例提供了一种空调器,如图13所示,包括第四方面任一项实施例提供的四通阀故障检测装置10,或如图14所示,包括第五方面任一项实施例提供的四通阀故障检测装置11,或如图15所示,包括第六方面任一项实施例提供的四通阀故障检测装置12。
本发明第七方面的实施例提供的空调器,包括第四方面任一项实施例所述的四通阀故障检测装置10,或第五方面任一项实施例所述的四通阀故障检测装置11,或第六方面任一项实施例所述的四通阀故障检测装置12,因此,具有第四方面、或第五方面,或第六方面任一项实施例所述的四通阀故障检测装置的有益效果,在此不再赘述。
在本说明书的描述中,术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或实例。而且,描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内, 所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (31)

  1. 一种四通阀故障检测方法,用于空调器,其特征在于,包括:
    检测室内换热器的温度和室内环境的温度及用户设定的工作模式;
    根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
  2. 根据权利要求1所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,若所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
  3. 根据权利要求1所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,若所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工 作模式不同,若所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
  4. 根据权利要求1至3中任一项所述的四通阀故障检测方法,其特征在于,还包括:
    判断所述空调器所处的当前条件是否满足预设条件;
    当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室内环境的温度及用户设定的工作模式的步骤;
    其中,所述预设条件至少包括下列条件之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  5. 根据权利要求4所述的四通阀故障检测方法,其特征在于,还包括:
    在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
  6. 一种四通阀故障检测方法,用于空调器,其特征在于,包括:
    检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;
    根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
  7. 根据权利要求6所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室内换热器的温度是否大于等于所述室外换热器的温度,若所述室内换热器的温度大于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度小于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
  8. 根据权利要求6所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制热模式时,所述根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室内换热器的温度是否小于等于所述室外换热器的温度,若所述室内换热器的温度小于等于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室内换热器的温度大于所述室外换热器的温度,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
  9. 根据权利要求6至8中任一项所述的四通阀故障检测方法,其特征在于,还包括:
    判断所述空调器所处的当前条件是否满足预设条件;
    当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室内换热器的温度和室外换热器的温度及用户设定的工作模式的步骤;
    其中,所述预设条件包括至少下列条件之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  10. 根据权利要求9所述的四通阀故障检测方法,其特征在于,还包括:
    在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
  11. 一种四通阀故障检测方法,用于空调器,其特征在于,包括:
    检测室外换热器的温度和室外环境的温度及用户设定的工作模式;
    根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,若所述空调器的当前运行模式与所述用户设定的工作模式不同,则判定四通阀处于换向异常状态,若所述空调器的当前运行模式与所述用户设定的工作模式相同,则判定所述四通阀处于换向正常状态。
  12. 根据权利要求11所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制冷模式或抽湿模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设温度值之和,若所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
  13. 根据权利要求11所述的四通阀故障检测方法,其特征在于,
    当检测出所述用户设定的工作模式为制热模式时,所述根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同的具体过程为:
    判段所述室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,若所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式不同,若所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和,则判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
  14. 根据权利要求11至13中任一项所述的四通阀故障检测方法,其特征在于,还包括:
    判断所述空调器所处的当前条件是否满足预设条件;
    当判定所述空调器所处的当前条件满足预设条件时,执行所述检测室外换热器的温度和室外环境的温度及用户设定的工作模式的步骤;
    其中,所述预设条件包括下列条件至少之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  15. 根据权利要求14所述的四通阀故障检测方法,其特征在于,还包括:
    在所述判定四通阀处于换向异常状态之后,输出四通阀换向异常信号。
  16. 一种四通阀故障检测装置,用于空调器,其特征在于,包括:
    检测装置,用于检测室内换热器的温度和室内环境的温度及用户设定的工作模式;
    处理装置,用于根据所述室内换热器的温度和所述室内环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
  17. 根据权利要求16所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室内环境的温度与第一预设温度值之和,并在所述室内换热器的温度大于等于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室内环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模 式相同;
    其中,所述第一预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
  18. 根据权利要求16所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室内环境的温度与第二预设温度值之和,并在所述室内换热器的温度小于等于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室内环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第二预设温度值大于等于检测所述室内换热器的温度时的检测误差值。
  19. 根据权利要求16至18中任一项所述的四通阀故障检测装置,其特征在于,所述处理装置还用于:
    判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室内换热器的温度和室内环境的温度及用户设定的工作模式;
    其中,所述预设条件至少包括下列条件之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  20. 根据权利要求19所述的四通阀故障检测装置,其特征在于,还包括:
    输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
  21. 一种四通阀故障检测装置,用于空调器,其特征在于,包括:
    检测装置,用于检测室内换热器的温度和室外换热器的温度及用户设定的 工作模式;
    处理装置,用于根据所述室内换热器的温度和所述室外换热器的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
  22. 根据权利要求21所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室内换热器的温度是否大于等于所述室外换热器的温度,并在所述室内换热器的温度大于等于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度小于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
  23. 根据权利要求21所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述室内换热器的温度是否小于等于所述室外换热器的温度,并在所述室内换热器的温度小于等于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室内换热器的温度大于所述室外换热器的温度时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同。
  24. 根据权利要求21至23中任一项所述的四通阀故障检测装置,其特征在于,所述处理装置还用于:
    判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室内换热器的温度和室外换热器的温度及用户设定的工作模式;
    其中,所述预设条件包括至少下列条件之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  25. 根据权利要求24所述的四通阀故障检测装置,其特征在于,还包括:
    输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
  26. 一种四通阀故障检测装置,用于空调器,其特征在于,包括:
    检测装置,用于检测室外换热器的温度和室外环境的温度及用户设定的工作模式;
    处理装置,用于根据所述室外换热器的温度和所述室外环境的温度判段所述空调器的当前运行模式是否与所述用户设定的工作模式相同,并在所述空调器的当前运行模式与所述用户设定的工作模式不同时,判定四通阀处于换向异常状态,及在所述空调器的当前运行模式与所述用户设定的工作模式相同时,判定所述四通阀处于换向正常状态。
  27. 根据权利要求26所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制冷模式或抽湿模式时,判段所述室外换热器的温度是否大于等于所述室外环境的温度与第一预设温度值之和,并在所述室外换热器的温度大于等于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度小于所述室外环境的温度与所述第一预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第一预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
  28. 根据权利要求26所述的四通阀故障检测装置,其特征在于,所述处理装置用于:
    在所述检测装置检测出所述用户设定的工作模式为制热模式时,判段所述 室外换热器的温度是否小于等于所述室外环境的温度与第二预设温度值之和,并在所述室外换热器的温度小于等于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式不同,及在所述室外换热器的温度大于所述室外环境的温度与所述第二预设温度值之和时,判定所述空调器的当前运行模式与所述用户设定的工作模式相同;
    其中,所述第二预设温度值大于等于检测所述室外换热器的温度时的检测误差值。
  29. 根据权利要求26至28中任一项所述的四通阀故障检测装置,其特征在于,所述处理装置还用于:
    判断所述空调器所处的当前条件是否满足预设条件,并在所述空调器所处的当前条件满足预设条件时,控制检测装置检测室外换热器的温度和室外环境的温度及用户设定的工作模式;
    其中,所述预设条件包括下列条件至少之一:
    所述空调器的运行时间大于等于预定运行时间;
    所述空调器的当前运行模式为非自动运行模式;
    所述空调器的当前运行模式为非送风运行模式;
    所述空调器的当前运行模式为非除霜模式,且所述空调器距除霜结束时间大于预设时间。
  30. 根据权利要求29所述的四通阀故障检测装置,其特征在于,还包括:
    输出装置,用于在所述处理装置判定出所述四通阀处于换向异常状态之后输出四通阀换向异常信号。
  31. 一种空调器,其特征在于,包括如权利要求16至30中任一项所述的四通阀故障检测装置。
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