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WO2024021430A1 - 用于诊断空调单向阀故障的方法、装置、空调和存储介质 - Google Patents

用于诊断空调单向阀故障的方法、装置、空调和存储介质 Download PDF

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Publication number
WO2024021430A1
WO2024021430A1 PCT/CN2022/137537 CN2022137537W WO2024021430A1 WO 2024021430 A1 WO2024021430 A1 WO 2024021430A1 CN 2022137537 W CN2022137537 W CN 2022137537W WO 2024021430 A1 WO2024021430 A1 WO 2024021430A1
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WO
WIPO (PCT)
Prior art keywords
way valve
air conditioner
heat exchange
main pipe
refrigerant
Prior art date
Application number
PCT/CN2022/137537
Other languages
English (en)
French (fr)
Inventor
丁爽
王飞
崔文娟
蒋骏
王麒澄
Original Assignee
青岛海尔空调器有限总公司
青岛海尔空调电子有限公司
海尔智家股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 青岛海尔空调器有限总公司, 青岛海尔空调电子有限公司, 海尔智家股份有限公司 filed Critical 青岛海尔空调器有限总公司
Publication of WO2024021430A1 publication Critical patent/WO2024021430A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements

Definitions

  • This application relates to the technical field of smart home appliances, for example, to a method, device, air conditioner and storage medium for diagnosing the failure of an air conditioner one-way valve.
  • a one-way valve is usually used to limit the flow direction of the refrigerant, that is, the refrigerant can only flow in along the water inlet, but the medium at the water outlet cannot flow back. If the one-way valve fails, it will affect the normal operation of the air conditioner.
  • a fault detection and processing method for an air conditioner subcooling pipe group which includes: turning on the air conditioner for heating; recording the time required from the start of heating to the stabilization of the exhaust temperature of the compressor; and determining whether the time required for stabilization is less than The first preset time; if so, detect the exhaust gas temperature in a stable state and the coil temperature of the air-conditioning indoor unit heat exchanger; determine whether the difference between the exhaust gas temperature in a stable state and the coil temperature is is less than the first preset temperature difference; and if so, it is determined that the one-way valve in the subcooling tube group is faulty.
  • Embodiments of the present disclosure provide a method, device, air conditioner, and storage medium for diagnosing a one-way valve failure in an air conditioner, so as to propose a method for determining a one-way valve failure suitable for the above-mentioned heat exchanger.
  • the air conditioner includes: a heat exchanger, which can change the circulation path of the refrigerant in the heat exchanger when the operating mode is changed;
  • the heat exchanger includes: multiple heat exchange branches and a plurality of refrigerant transport pipelines; when the air conditioner operates in the heating mode, a first one-way valve is provided on the refrigerant inflow side of each heat exchanger, and a second one-way valve is provided on the refrigerant outflow side;
  • the method includes: determining the operating mode of the air conditioner; determining multiple target pipelines in each of the heat exchange branches and the refrigerant transport pipeline according to the operating mode; and obtaining the operation of each target pipeline in advance. Parameter to determine the fault condition of the first one-way valve and/or the second one-way valve.
  • the device includes: a processor and a memory storing program instructions, and the processor is configured to execute the aforementioned method for diagnosing a fault of an air conditioning check valve when running the program instructions. .
  • the air conditioner includes: a heat exchanger, which can change the circulation path of the refrigerant in the heat exchanger when the operating mode is changed;
  • the heat exchanger includes: a plurality of heat exchange branches. and a plurality of refrigerant transport pipelines; a first one-way valve, disposed on the refrigerant inflow side of each heat exchange branch when the air conditioner operates in the heating mode; a second one-way valve, disposed on the air conditioner When operating in the heating mode, the refrigerant outflow side of each of the heat exchange branches; and, as mentioned above, the device used to diagnose the failure of the air conditioner one-way valve.
  • the storage medium stores program instructions, and when the program instructions are run, the aforementioned method for diagnosing air conditioner check valve faults is executed.
  • multiple target pipelines that need to be monitored are first determined according to the operating mode of the air conditioner. If the one-way valve fails, the refrigerant flow in the target pipeline will be different from normal conditions, thus affecting the operating parameters of the target pipeline. In other words, the operating parameters of the target pipeline can reflect the failure of the one-way valve from the side. Therefore, the fault condition of the first one-way valve and/or the second one-way valve is determined according to the operating parameters of the target pipeline. Therefore, a method for determining the failure of the one-way valve in the above-mentioned heat exchanger structure is proposed, so as to detect the failure of the one-way valve in time and ensure the normal operation of the air conditioner.
  • Figure 1 is a schematic diagram of a refrigerant circulation loop provided by an embodiment of the present disclosure
  • Figure 2 is a schematic structural diagram of a heat exchanger provided by an embodiment of the present disclosure
  • Figure 3 is a schematic diagram of the normal flow of refrigerant with the one-way valve core in place provided by an embodiment of the present disclosure
  • Figure 4 is a schematic diagram of the refrigerant flow reduction due to stuck one-way valve core provided by an embodiment of the present disclosure
  • Figure 5 is a schematic diagram of the one-way valve with the valve core in place and no refrigerant flowing according to an embodiment of the present disclosure
  • Figure 6 is a schematic diagram of refrigerant leakage when the one-way valve core is tilted according to an embodiment of the present disclosure
  • Figure 7 is a schematic diagram of a method for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure
  • Figure 8 is a schematic diagram of another method for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure
  • Figure 9 is a schematic diagram of another method for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure.
  • Figure 10 is a schematic diagram of another method for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure
  • Figure 11 is a schematic diagram of a device for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure
  • Figure 12 is a schematic diagram of another device for diagnosing a fault of an air conditioner one-way valve provided by an embodiment of the present disclosure.
  • A/B means: A or B.
  • a and/or B means: A or B, or A and B.
  • correspondence can refer to an association relationship or a binding relationship.
  • correspondence between A and B refers to an association relationship or a binding relationship between A and B.
  • an embodiment of the present disclosure provides an air conditioner.
  • the air conditioner includes: a compressor 10, an indoor heat exchanger 20, an outdoor heat exchanger 30 and a throttling device 40.
  • the compressor 10, the indoor heat exchanger 20, the outdoor variable split heat exchanger 30 and the throttling device 40 are connected to form a refrigerant circulation loop.
  • the outdoor heat exchanger 30 includes: a first liquid distributor 31 , a second liquid distributor 32 , a third liquid distributor 33 , a fourth liquid distributor 34 , a heat exchange pipeline and a refrigerant transport pipeline. .
  • the heat exchange pipeline includes: a first heat exchange branch 35 , a second heat exchange branch 36 and a third heat exchange branch 37 .
  • the first heat exchange branch 35 is the bottom heat exchange branch.
  • the second heat exchange branch 36 is an intermediate heat exchange branch.
  • the third heat exchange branch 37 is the uppermost heat exchange branch.
  • the refrigerant transport pipeline includes: a first main pipe 50 , a second main pipe 60 , a first bypass pipe 38 and a second bypass pipe 39 .
  • the liquid collection end of the first liquid distributor 31 is connected with the indoor heat exchanger 20 through the first main pipe 50 .
  • the liquid dispensing end of the first liquid separator 31 is connected with the first end of the first heat exchange branch 35 .
  • the liquid dispensing end of the first liquid dispenser 31 is also connected to the liquid collection end of the second liquid dispenser 32 through the first bypass pipe 38 .
  • a first one-way valve 381 is provided on the first bypass line 38 to limit the refrigerant in the first bypass line 38 to only flow from the first dispenser 31 to the second dispenser 32 .
  • the liquid dispensing end of the second liquid separator 32 is connected with the first end of the second heat exchange branch 36 .
  • the liquid dispensing end of the second liquid separator 32 is also connected to the first end of the third heat exchange branch 37 .
  • the second end of the first heat exchange branch 35 is connected with the liquid dispensing end of the third liquid separator 33 .
  • the second end of the second heat exchange branch 36 is connected with the liquid dispensing end of the third liquid distributor 33 .
  • the liquid collecting end of the third liquid dispenser 33 is connected with the liquid dispensing end of the fourth liquid dispenser 34 through the second bypass pipe 39 .
  • a second one-way valve 391 is provided on the second bypass line 39 to limit the refrigerant in the second bypass line 39 to only flow from the third liquid distributor 33 to the fourth liquid distributor 34 .
  • the second end of the third heat exchange branch 37 is connected with the liquid dispensing end of the fourth liquid distributor 34 .
  • the liquid collecting end of the fourth liquid distributor 34 is connected with the throttling device 40 through the second main pipe 60 .
  • the heat exchange pipeline can include more heat exchange branches and liquid distributors. Please refer to the previous article for specific connection methods, so as to achieve more parallel connection of heat exchange branches in heating mode and more heat exchange branches in cooling mode. Multiple heat exchange branches are connected in series.
  • the refrigerant inflow side of the outdoor heat exchanger is the right side of the outdoor heat exchanger in Figure 1, and the refrigerant outflow side is the left side of the outdoor heat exchanger in Figure 1.
  • the air conditioner operates in cooling mode, the refrigerant inflow side of the outdoor heat exchanger is the left side of the outdoor heat exchanger in Figure 1, and the refrigerant outflow side is the right side of the outdoor heat exchanger in Figure 1.
  • the second main pipe 60 is provided with a first sensor 70 .
  • a second sensor 80 is provided on the first heat exchange branch 35 .
  • the first main tube 50 is provided with a third sensor 90 .
  • the fourth sensor 100 is provided on the third heat exchange branch 37 .
  • Each sensor is used to detect the operating parameters of the corresponding pipeline, such as detecting temperature or pressure.
  • the one-way valve includes: a housing 110, a valve core 120, a limiting component 130 and a valve seat 140.
  • the valve core 120 moves to the limit position along the inside of the housing 110 under the impact of the fluid.
  • the fluid flows out along the gap between the valve core 120, the housing 110, and the limiting component 130.
  • the one-way valve is in the conductive state.
  • the valve core 120 moves along the inside of the housing 110 to the position of the valve seat 140 under the impact of the fluid.
  • the valve core 120 is in complete contact with the valve seat 140 without any gap, and the fluid cannot flow out. At this time the one-way valve is closed.
  • valve core 120 moves toward the limiting component 130 (forward movement), it is easily affected by the pulsation of the fluid flow.
  • the valve core 120 rotates and shifts inside the cavity and gets stuck in the limiting component 130, which will cause the refrigerant flow to decrease;
  • an embodiment of the present disclosure provides a method for diagnosing a fault of an air conditioner one-way valve, including:
  • the processor determines the operating mode of the air conditioner.
  • S702 The processor determines multiple target pipelines in each heat exchange branch and refrigerant delivery pipeline according to the operating mode.
  • the processor determines the fault condition of the first one-way valve and/or the second one-way valve based on pre-obtained operating parameters of each target pipeline.
  • the operating mode of the air conditioner is determined, for example, the cooling mode or the heating mode of the air conditioner is determined.
  • the air conditioning processor receives an instruction, it will parse the instruction to obtain relevant control content.
  • the processor can determine the current operating mode through the content obtained from past analysis.
  • multiple target pipelines are determined from each heat exchange branch and refrigerant delivery pipeline.
  • the operating parameters of the target pipeline are obtained in real time through the sensors installed on each target pipeline.
  • the operating parameter of the target pipeline can be pipeline pressure or pipeline temperature. This is because: if the one-way valve fails, the temperature and pressure of the pipeline will change. Therefore, the pipeline pressure or pipeline temperature can reflect whether the one-way valve has failed. If the operating parameter is pipeline pressure, the sensor set on the target pipeline is a pressure sensor. If the operating parameter is pipeline temperature, the sensor set on the target pipeline is a temperature sensor.
  • multiple target pipelines that need to be monitored are first determined according to the operating mode of the air conditioner. If the one-way valve fails, the refrigerant flow in the target pipeline will be different from normal conditions, thus affecting the operating parameters of the target pipeline. In other words, the operating parameters of the target pipeline can reflect the failure of the one-way valve from the side. Therefore, the fault condition of the first one-way valve and/or the second one-way valve is determined according to the operating parameters of the target pipeline. Therefore, a method for determining the failure of the one-way valve in the above-mentioned heat exchanger structure is proposed, so as to detect the failure of the one-way valve in time and ensure the normal operation of the air conditioner.
  • an embodiment of the present disclosure provides another method for diagnosing a fault of an air conditioner one-way valve, including:
  • the processor determines the operating mode of the air conditioner.
  • S712 When the operating mode is the cooling mode, the processor determines the first main pipe, the second main pipe and the bottom heat exchange branch as the target pipeline.
  • the processor determines the first main pipe, the second main pipe, the lowermost heat exchange branch and the uppermost heat exchange branch as target pipelines.
  • the processor determines the fault condition of the first one-way valve and/or the second one-way valve based on pre-obtained operating parameters of each target pipeline.
  • the target pipeline needs to be determined based on the operating mode.
  • the one-way valve When the operating mode is refrigeration mode, the one-way valve is required to block the refrigerant.
  • the second one-way valve as an example, if the second one-way valve leaks, some of the refrigerant will flow directly into the bottom heat exchange branch without passing through the heat exchanger. This will have an impact on the operating parameters of the bottom heat exchange branch.
  • the first one-way valve leaks, it will have an impact on the operating parameters of the first main pipe. In this case, the difference between the operating parameters of the second main pipe and the bottom heat exchange branch, and the difference between the operating parameters of the second main pipe and the first main pipe, will be different from the differences under normal circumstances.
  • the operating mode is cooling mode
  • the first main pipe, the second main pipe and the bottom heat exchange branch are determined as the target pipes.
  • the sensor (second sensor) on the lowermost heat exchange branch is disposed in a part without heat exchange (relative to the cooling mode). This is because: if it is set in the part that passes through the heat exchanger, the operating parameters detected are the operating parameters after heat exchange, and it is impossible to accurately determine whether the second one-way valve is faulty.
  • the one-way valve When the operating mode is heating mode, the one-way valve is required to conduct the refrigerant. Taking the first one-way valve as an example, if the first one-way valve is blocked, more refrigerant will enter the bottom heat exchange branch, while less refrigerant will enter other heat exchange branches. This will have an impact on the operating parameters of each heat exchange branch. There are one-way valves arranged before and after the intermediate heat exchange branch. It is difficult to determine which one-way valve is faulty through the operating parameters of the intermediate heat exchange branch. The refrigerant has only one one-way valve in the circulation path of the bottom heat exchange branch and the top heat exchange branch. It is easier to determine the position of the failed one-way valve.
  • the difference between the operating parameters of the first main pipe and the uppermost heat exchange branch, the difference between the operating parameters of the first main pipe and the second main pipe, and the operating parameters of the first main pipe and the bottom heat exchange branch The difference will be different from the difference under normal circumstances. Therefore, if the operating mode is heating mode, the first main pipe, the second main pipe, the lowermost heat exchange branch and the uppermost heat exchange branch are determined as the target pipelines.
  • the sensor on the uppermost heat exchange branch is disposed in the part that has undergone heat exchange (relative to the heating mode). This is because: if it is set in the part that has not passed through the heat exchanger, the operating parameters detected are the operating parameters that have not passed through the heat exchanger, and it is impossible to accurately determine whether the one-way valve has failed.
  • an embodiment of the present disclosure provides another method for diagnosing a fault of an air conditioner one-way valve, including:
  • the processor determines the operating mode of the air conditioner.
  • S702 The processor determines multiple target pipelines in each heat exchange branch and refrigerant delivery pipeline according to the operating mode.
  • S713 The processor determines multiple sets of comparison pipelines in the target pipeline.
  • S723 The processor calculates the difference in operating parameters of the comparison pipelines in the same group.
  • the processor determines the fault condition of the first one-way valve and/or the second one-way valve based on the calculated multiple differences.
  • multiple sets of comparison pipelines are determined with two target pipelines as one group. Calculate the difference between the operating parameters of the two target pipelines in the same group, and use the difference to determine the fault condition of the first one-way valve and/or the second one-way valve. For example, when a leakage failure occurs in the second one-way valve, part of the refrigerant will flow directly into the bottom heat exchange branch without passing through the heat exchanger. Then the operating parameters (temperature or pressure) of the bottom heat exchange branch will be low. Therefore, the difference in operating parameters of the pipelines before and after the second one-way valve, that is, the difference in operating parameters between the second main pipe and the bottom heat exchange system, can be used to determine whether the second one-way valve is faulty.
  • step S713 the processor determines multiple groups of comparison pipelines in the target pipeline, including:
  • the processor determines that the second main pipe and the bottom heat exchange branch are the first group of comparison pipes, and the second main pipe and the first main pipe are the second group of comparison pipes.
  • the processor determines that the first main pipe and the uppermost heat exchange branch are the third group of comparison pipes, the first main pipe and the second main pipe are the fourth group of comparison pipes, and the first main pipe is the fourth group of comparison pipes.
  • the fifth group of comparison pipes is the heat exchange branch at the bottom.
  • the second one-way valve leaks, part of the refrigerant flowing out of the second main pipe flows directly into the bottom heat exchange branch without heat exchange, and then flows into the first main pipe. If a leakage failure occurs in the first one-way valve, part of the refrigerant will directly enter the first main pipe through the first one-way valve and the first distributor, and the refrigerant flowing into the lowermost heat exchange branch will decrease. The above two situations will cause the difference between the operating parameters of the second main pipe and the bottom heat exchange branch, and the difference between the operating parameters of the second main pipe and the first main pipe to be different from normal conditions.
  • the second main pipe and the bottom heat exchange branch are the first group of comparison pipes
  • the second main pipe and the first main pipe are the second group of comparison pipes.
  • the fault condition of the first one-way valve and/or the second one-way valve is determined through the difference between the operating parameters of the first group of comparison pipelines and the difference between the operation parameters of the second group of comparison pipelines.
  • the second one-way valve fails, the refrigerant flow rate in the uppermost heat exchange branch will increase, and the operating parameters of the uppermost heat exchange branch and the first main pipe will be low. Therefore, it is determined that the first main pipe and the uppermost heat exchange branch are the third group of comparison pipes, and the first main pipe and the second main pipe are the fourth group of comparison pipes.
  • the fault condition of the second one-way valve is determined through the difference between the operating parameters of the third group of comparison pipelines and the difference between the operation parameters of the fourth group of comparison pipelines. If the first one-way valve is clogged, the refrigerant flow in the uppermost heat exchange branch will decrease, and the refrigerant flow in the uppermost heat exchange branch will increase.
  • the first main pipe and the bottom heat exchange branch are determined to be the fifth group of comparison pipes.
  • the fault condition of the first one-way valve is determined through the difference between the operating parameters of the third group of comparison pipelines and the difference of the operation parameters of the fifth group of comparison pipelines.
  • step S733 the processor determines the fault condition of the first one-way valve and/or the second one-way valve based on the calculated multiple differences, including:
  • the processor determines that a leakage failure occurs in the first one-way valve when the difference between the operating parameters of the first group of comparison pipelines and the difference between the operating parameters of the second group of comparison pipelines meets the first preset difference condition. .
  • the processor determines that a leakage failure occurs in the second one-way valve when the difference between the operating parameters of the first group of comparison pipelines and the difference between the operating parameters of the second group of comparison pipelines meets the second preset difference condition. .
  • the processor determines that a clogging failure occurs in the first one-way valve when the difference between the operating parameters of the third group of comparison pipelines and the difference of the operating parameters of the fourth group of comparison pipelines meets the third preset difference condition. .
  • the processor determines that a clogging failure occurs in the second one-way valve when the difference between the operating parameters of the third group of comparison pipelines and the difference of the operating parameters of the fifth group of comparison pipelines meets the fourth preset difference condition. .
  • the operating parameters Sa of the second main pipe, the operating parameters Sb of the bottom heat exchange branch, the operating parameters Sc of the first main pipe, and the operating parameters Sd of the uppermost heat exchange branch are obtained in real time.
  • the first preset difference condition is: Sa-Sb ⁇ A, and Sa-Sc ⁇ B.
  • A is the first parameter threshold
  • B is the second parameter threshold.
  • the second preset difference condition is: Sa-Sb ⁇ C, and Sa-Sc ⁇ D.
  • C is the third parameter threshold
  • D is the fourth parameter threshold.
  • the third preset difference condition is: Sc-Sd ⁇ E, and Sc-Sa ⁇ F.
  • E is the fifth parameter threshold
  • F is the sixth parameter threshold.
  • the fourth preset difference condition is: Sc-Sb ⁇ G, and Sc-Sd ⁇ H.
  • G is the seventh parameter threshold
  • H is the eighth parameter threshold.
  • first preset difference condition it is determined that a leakage failure occurs in the first one-way valve. If the second preset difference condition is met, it is determined that a leakage failure occurs in the second one-way valve. If the third preset difference condition is met, it is determined that a clogging failure occurs in the first one-way valve. If the fourth preset difference condition is met, it is determined that a clogging failure occurs in the second one-way valve.
  • the first parameter threshold A, the second parameter threshold B, the third parameter threshold C, the fourth parameter threshold D, the fifth parameter threshold E, the sixth parameter threshold F, the seventh parameter threshold G and The specific value of the eighth parameter threshold H is pre-stored in the processor of the air conditioner.
  • the association includes a correspondence between one or more operating frequencies and parameter thresholds.
  • the method for determining the correlation between the compressor operating frequency and each pressure threshold is the same as the above method and will not be described again here.
  • the obtained above-mentioned correlation relationship is stored in the air-conditioning processor.
  • the corresponding parameter threshold can be obtained based on the operating mode of the air conditioner and the operating frequency of the compressor. If the operating frequency of the compressor is between the two frequencies in the table, interpolation is used to calculate the values of A, B, C, D, E, F, G and H.
  • an embodiment of the present disclosure provides another method for diagnosing a fault of an air conditioner one-way valve, including:
  • the processor determines the operating mode of the air conditioner.
  • S702 The processor determines multiple target pipelines in each of the heat exchange branches and the refrigerant transport pipeline according to the operating mode.
  • the processor determines the fault condition of the first one-way valve and/or the second one-way valve based on pre-obtained operating parameters of each target pipeline.
  • the processor switches the operating mode of the air conditioner a preset number of times to eliminate faults.
  • S705 The processor re-determines the fault conditions of the first one-way valve and the second one-way valve.
  • an alarm prompt is sent to the remote cloud to remind the engineer to deal with the failure of the one-way valve.
  • automatically switch the operating mode that is, control the air conditioner to switch between the heating mode and the cooling mode. Due to the change in operating mode, the refrigerant flow direction in the heat exchanger will also change. In this way, the impact of the refrigerant on the valve core is used to make the valve core of the one-way valve re-engage with the limiting component. Switch the preset number of times in this way, for example, 3 to 4 times. Then follow the previous method to re-determine the fault conditions of the first one-way valve and the second one-way valve.
  • the air conditioner sends an alarm prompt to remind the user or engineer to replace the valve core in time.
  • the air conditioner can send a voice alarm prompt through its own voice module to remind the user; it can also communicate with the terminal device (such as a mobile phone, computer, etc.) through its own communication module and send an alarm prompt to the terminal device to remind the user.
  • Alarm prompts can also be sent to the remote cloud to remind engineers to deal with it.
  • an embodiment of the present disclosure provides a device 11 for diagnosing a fault of an air conditioner one-way valve, including: a first determination module 111 , a second determination module 112 and a third determination module 113 .
  • the first determination module 111 is configured to determine the operating mode of the air conditioner.
  • the second determination module 111 is configured to determine a plurality of target pipelines in each of the heat exchange branches and the refrigerant delivery pipeline according to the operating mode.
  • the third determination module 111 is configured to determine the fault condition of the first one-way valve and/or the second one-way valve based on pre-obtaining the operating parameters of each target pipeline.
  • an embodiment of the present disclosure provides a device 12 for diagnosing a fault of an air conditioner one-way valve, including a processor 120 and a memory 121 .
  • the device may also include a communication interface (Communication Interface) 122 and a bus 123.
  • Communication interface 122 may be used for information transmission.
  • the processor 120 may call logical instructions in the memory 121 to execute the method for diagnosing the air conditioner one-way valve failure in the above embodiment.
  • the above-mentioned logical instructions in the memory 121 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.
  • the memory 121 can be used to store software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure.
  • the processor 120 executes the program instructions/modules stored in the memory 121 to execute functional applications and data processing, that is, to implement the method for diagnosing the air conditioner check valve failure in the above embodiment.
  • the memory 121 may include a stored program area and a stored data area, wherein the stored program area may store an operating system and at least one application program required for a function; the stored data area may store data created according to the use of the terminal device, etc.
  • the memory 121 may include a high-speed random access memory, and may also include a non-volatile memory.
  • An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for diagnosing a fault of an air conditioner check valve.
  • Embodiments of the present disclosure provide a storage medium that stores computer-executable instructions, and the computer-executable instructions are configured to execute the above method for diagnosing a fault of an air conditioner one-way valve.
  • the above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.
  • An embodiment of the present disclosure provides a computer program that, when executed by a computer, causes the computer to implement the above method for diagnosing a fault of an air conditioner one-way valve.
  • Embodiments of the present disclosure provide a computer program product.
  • the computer program product includes computer instructions stored on a computer-readable storage medium.
  • the program instructions When executed by a computer, the computer implements the above-mentioned method for diagnosing an air conditioner. One-way valve failure method.
  • the term “and/or” as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed items.
  • the term “comprise” and its variations “comprises” and/or “comprising” etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these.
  • an element defined by the statement “comprises a" does not exclude the presence of additional identical elements in a process, method or apparatus including the stated element.
  • each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other.
  • the relevant parts can be referred to the description of the method part.
  • the disclosed methods and products can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units may only be a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined. Either it can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more components for implementing the specified logical function(s).
  • Executable instructions may be included in the block.
  • the functions noted in the block may occur out of the order noted in the figures. For example, two consecutive blocks may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved.

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Abstract

本申请公开一种用于诊断空调单向阀故障的方法，空调包括：换热器，能够在运行模式改变的情况下，改变冷媒在换热器内的流通路径；换热器包括：多条换热支路和多条冷媒输送管路；在空调运行制热模式的情况下，各条换热器的冷媒流入侧设置有第一单向阀，冷媒流出侧设置有第二单向阀；方法包括：确定空调的运行模式；根据运行模式，在各条换热支路和冷媒输送管路中确定多个目标管路；根据预先获取各个目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。这样，提出了一种适用于上述换热器结构中单向阀故障的确定方法，以便及时发现单向阀故障情况，保证空调的正常运行。本申请还公开一种用于诊断空调单向阀故障的装置、空调和存储介质。

Description

用于诊断空调单向阀故障的方法、装置、空调和存储介质
本申请基于申请号为202210893801.X、申请日为2022年7月27日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及智能家电技术领域，例如涉及一种用于诊断空调单向阀故障的方法、装置、空调和存储介质。
背景技术
在空调的冷媒循环回路中，通常利用单向阀限制冷媒的流动方向，即冷媒只能沿进水口流入，出水口介质却无法回流。如果单向阀发生故障，则会影响空调的正常运行。
相关技术中公开了一种空调过冷管组的故障检测和处理方法，包括：空调开启制热；记录从制热开始到压缩机的排气温度稳定所需时间；判断稳定所需时间是否小于第一预设时间；若是，检测处于稳定状态的所述排气温度以及空调室内机换热器的盘管温度；判断处于稳定状态的所述排气温度与所述盘管温度的差值是否小于第一预设温度差；以及若是，确定所述过冷管组中的单向阀发生故障。
上述方法中，适用于空调过冷管组。目前，已经有能够在运行模式改变的情况下，改变冷媒在换热器内的流通路径的换热器，即具有可变分流分能力的换热器。这种换热器也具有单向阀。对于这种新形式的换热器而言，上述单向阀故障的检测方法并不适用。
发明内容
为了对披露的实施例的一些方面有基本的理解，下面给出了简单的概括。所述概括不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围，而是作为后面的详细说明的序言。
本公开实施例提供了一种用于诊断空调单向阀故障的方法、装置、空调和存储介质，以提出适用于上述换热器的单向阀故障的确定方法。
在一些实施例中，所述空调包括：换热器，能够在运行模式改变的情况下，改变冷媒在所述换热器内的流通路径；所述换热器包括：多条换热支路和多条冷媒输送管路；在所述空调运行制热模式的情况下，各条所述换热器的冷媒流入侧设置有第一单向阀，冷媒流 出侧设置有第二单向阀；所述方法包括：确定所述空调的运行模式；根据运行模式，在各条所述换热支路和所述冷媒输送管路中确定多个目标管路；根据预先获取各个目标管路的运行参数，确定所述第一单向阀和/或所述第二单向阀的故障情况。
在一些实施例中，所述装置包括：包括处理器和存储有程序指令的存储器，所述处理器被配置为在运行所述程序指令时，执行前述的用于诊断空调单向阀故障的方法。
在一些实施例中，所述空调，包括：换热器，能够在运行模式改变的情况下，改变冷媒在所述换热器内的流通路径；所述换热器包括：多条换热支路和多条冷媒输送管路；第一单向阀，设置于所述空调运行制热模式时，各条所述换热支路的冷媒流入侧；第二单向阀，设置于所述空调运行制热模式时，各条所述换热支路的冷媒流出侧；和，如前述的用于诊断空调单向阀故障的装置。
在一些实施例中，所述存储介质，存储有程序指令，所述程序指令在运行时，执行前述的用于诊断空调单向阀故障的方法。
本公开实施例提供的诊断空调单向阀故障的方法、装置、空调和存储介质，可以实现以下技术效果：
基于换热器具有可变分流能力以及其特殊的结构，首先根据空调的运行模式确定多个需要监测的目标管路。如果单向阀发生故障，目标管路内冷媒流量会不同于正常情况，从而给目标管路的运行参数带来影响。也就是说，目标管路的运行参数可以从侧面反映出单向阀的故障情况。因此，根据目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。从而提出了一种适用于上述换热器结构中单向阀故障的确定方法，以便及时发现单向阀故障情况，保证空调的正常运行。
以上的总体描述和下文中的描述仅是示例性和解释性的，不用于限制本申请。
附图说明
一个或多个实施例通过与之对应的附图进行示例性说明，这些示例性说明和附图并不构成对实施例的限定，附图中具有相同参考数字标号的元件示为类似的元件，附图不构成比例限制，并且其中：
图1是本公开实施例提供的冷媒循环回路示意图；
图2是本公开实施例提供的换热器的结构示意图；
图3是本公开实施例提供的单向阀阀芯到位冷媒流通正常示意图；
图4是本公开实施例提供的单向阀阀芯卡住冷媒流量减小示意图；
图5是本公开实施例提供的单向阀阀芯到位无冷媒流通示意图；
图6是本公开实施例提供的单向阀阀芯倾斜冷媒泄漏示意图；
图7是本公开实施例提供的一个用于诊断空调单向阀故障的方法的示意图；
图8是本公开实施例提供的另一个用于诊断空调单向阀故障的方法的示意图；
图9是本公开实施例提供的另一个用于诊断空调单向阀故障的方法的示意图；
图10是本公开实施例提供的另一个用于诊断空调单向阀故障的方法的示意图；
图11是本公开实施例提供的一个用于诊断空调单向阀故障的装置的示意图；
图12是本公开实施例提供的另一个用于诊断空调单向阀故障的装置的示意图。
附图标记：
10、压缩机；20、室内换热器；30、室外换热器；31、第一分液器；32、第二分液器；33、第三分液器；34、第四分液器；35、第一换热支路；36、第二换热支路；37、第三换热支路；38、第一旁通管路；381、第一单向阀；39、第二旁通管路；391、第二单向阀；40、节流装置；50、第一主管；60、第二主管；70、第一传感器；80、第二传感器；90、第三传感器；100、第四传感器；110、壳体；120、阀芯；130、限位部件；140、阀座。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容，下面结合附图对本公开实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本公开实施例。在以下的技术描述中，为方便解释起见，通过多个细节以提供对所披露实施例的充分理解。然而，在没有这些细节的情况下，一个或多个实施例仍然可以实施。在其它情况下，为简化附图，熟知的结构和装置可以简化展示。
本公开实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本公开实施例的实施例。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含。
除非另有说明，术语“多个”表示两个或两个以上。
本公开实施例中，字符“/”表示前后对象是一种“或”的关系。例如，A/B表示：A或B。
术语“和/或”是一种描述对象的关联关系，表示可以存在三种关系。例如，A和/或B，表示：A或B，或，A和B这三种关系。
术语“对应”可以指的是一种关联关系或绑定关系，A与B相对应指的是A与B之间是一种关联关系或绑定关系。
结合图1所示，本公开实施例提供一种空调。该空调包括：压缩机10、室内换热器 20、室外换热器30和节流装置40。压缩机10、室内换热器20、室外可变分流换热器30和节流装置40连接形成冷媒循环回路。
结合图2所示，室外换热器30包括：第一分液器31、第二分液器32、第三分液器33、第四分液器34、换热管路和冷媒输送管路。
换热管路包括：第一换热支路35、第二换热支路36和第三换热支路37。第一换热支路35为最下方换热支路。第二换热支路36为中间换热支路。第三换热支路37为最上方换热支路。
冷媒输送管路包括：第一主管50、第二主管60、第一旁通管路38和第二旁通管路39。
第一分液器31的集液端通过第一主管50与室内换热器20相连通。
第一分液器31的分液端与第一换热支路35的第一端相连通。第一分液器31的分液端还通过第一旁通管路38与第二分液器32的集液端相连通。第一旁通管路38上设置有第一单向阀381，用于限定第一旁通管路38内的冷媒只能从第一分液器31流向第二分液器32。
第二分液器32的分液端与第二换热支路36的第一端相连通。第二分液器32的分液端还与第三换热支路37的第一端相连通。
第一换热支路35的第二端与第三分液器33的分液端相连通。第二换热支路36的第二端与第三分液器33的分液端相连通。第三分液器33的集液端通过第二旁通管路39与第四分液器34的分液端相连通。第二旁通管路39上设置有第二单向阀391，用于限定第二旁通管路39内的冷媒只能从第三分液器33流向第四分液器34。
第三换热支路37的第二端与第四分液器34的分液端相连通。第四分液器34的集液端通过第二主管60与节流装置40相连通。
当空调运行制热模式时，冷媒从第一主管50流入。在第一分液器31和第二分液器32的分液作用下，分别流入第一换热支路35、第二换热支路36和第三换热支路37。然后在第二主管60内汇合，流入节流装置40。这样，各条换热支路并联。
当空调运行制冷模式时，冷媒从第二主管60流入。在第一单向阀381和第二单向阀391的阻断作用下，依次流入第三换热支路37、第二换热支路36和第一换热支路35。最后通过第一主管50流入室内换热器20。这样，各条换热支路串联。
需要说明的是，换热管路可以包括更多的换热支路和分液器，具体连接方式参考前文即可，以实现制热模式下更多换热支路并联、以及制冷模式下更多换热支路串联。
如果空调运行制热模式，则室外换热器的冷媒流入侧为图1中室外换热器的右侧，冷 媒流出侧为图1中室外换热器的左侧。如果空调运行制冷模式，则室外换热器的冷媒流入侧为图1中室外换热器的左侧，冷媒流出侧为图1中室外换热器的右侧。
第二主管60上设置有第一传感器70。第一换热支路35上设置有第二传感器80。第一主管50上设置有第三传感器90。第三换热支路37上设置有第四传感器100。各个传感器用于检测对应管路的运行参数，例如检测温度或压力。
单向阀包括：壳体110、阀芯120、限位部件130和阀座140。流体正向流动时，阀芯120在流体的冲击作用下，沿壳体110内部移动到限位位置。流体沿阀芯120与壳体110、限位部件130之间的间隙流出。此时单向阀处于导通状态。流体逆向流动时，阀芯120在流体的冲击作用下，沿壳体110内部移动到阀座140位置。阀芯120与阀座140完全接触且无间隙，流体无法流出。此时单向阀处于关闭状态。
单向阀的阀芯120在受到流体作用时，容易发生以下故障：
①结合图3和图4所示，如果运行制冷模式，在阀芯120向限位部件130运动时(正向运动)，容易受到流体流动脉动的影响。阀芯120在腔体内部旋转移位，卡在限位部件130中，会导致冷媒流量减少；
②结合图5和图6所示，如果运行制热模式，在阀芯120向阀座140运动时(反向运动)，由于阀芯120受流体冲击而不能完全与阀座140面配合，会造成冷媒泄漏。
因此，及时确定单向阀的故障情况是十分必要的。
结合图7所示，本公开实施例提供一种用于诊断空调单向阀故障的方法，包括：
S701，处理器确定空调的运行模式。
S702，处理器根据运行模式，在各条换热支路和冷媒输送管路中确定多个目标管路。
S703，处理器根据预先获取各个目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。
在空调运行时，确定空调的运行模式，例如确定空调运行制冷模式或制热模式。具体地，当空调处理器接收到指令时，会对指令进行解析，从而得到相关控制内容。处理器可以通过以往解析所得到的内容，确定当前的运行模式。根据空调的运行模式，从各条换热支路和冷媒输送管路中，确定多个目标管路。在空调运行的过程中，通过设置于各条目标管路上的传感器，实时获取目标管路的运行参数。
可选地，目标管路的运行参数可以为管路压力，也可以为管路温度。这是因为：如果单向阀出现故障，则管路的温度和压力会发生变化。因此，管路压力或管路温度，可以从侧面反映出单向阀是否发生故障。如果运行参数为管路压力，则目标管路上设置的传感器为压力传感器。如果运行参数为管路温度，则目标管路上设置的传感器为温度传感器。
根据实时获取的目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。具体可以确定是哪个单向阀发生故障、以及故障类型。
在本公开实施例中，基于换热器具有可变分流能力以及其特殊的结构，首先根据空调的运行模式确定多个需要监测的目标管路。如果单向阀发生故障，目标管路内冷媒流量会不同于正常情况，从而给目标管路的运行参数带来影响。也就是说，目标管路的运行参数可以从侧面反映出单向阀的故障情况。因此，根据目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。从而提出了一种适用于上述换热器结构中单向阀故障的确定方法，以便及时发现单向阀故障情况，保证空调的正常运行。
结合图8所示，本公开实施例提供另一种用于诊断空调单向阀故障的方法，包括：
S701，处理器确定空调的运行模式。
S712，处理器在运行模式为制冷模式的情况下，将第一主管、第二主管和最下方换热支路确定为目标管路。
S722，处理器在运行模式为制热模式的情况下，将第一主管、第二主管、最下方换热支路和最上方换热支路确定为目标管路。
S703，处理器根据预先获取各个目标管路的运行参数，确定第一单向阀和/或第二单向阀的故障情况。
由于空调运行不同模式时，冷媒的流向不同，所以单向阀的作用(导通或阻断)也会随之不同。因此，不同运行模式下，会对不同的管路运行参数产生影响。所以，需要基于运行模式确定目标管路。
当运行模式为制冷模式时，需要单向阀对冷媒有阻断作用。以第二单向阀为例，如果第二单向阀发生泄漏故障，则会使一部分冷媒不经过换热器，直接流入最下方换热支路。这就会对最下方换热支路的运行参数产生影响。同理，如果第一单向阀发生泄漏故障，会对第一主管的运行参数产生影响。这种情况下，第二主管与最下方换热支路的运行参数的差值、以及第二主管与第一主管的运行参数的差值，会与正常情况下的差值有所不同。因此，如果运行模式为制冷模式，将第一主管、第二主管和最下方换热支路确定为目标管路。可选地，最下方换热支路上的传感器(第二传感器)设置于未经换热的部分(相对于制冷模式而言)。这是因为：如果设置于经过换热器的部分，检测的运行参数为经过换热后的运行参数，无法准确判断第二单向阀是否发生故障。
当运行模式为制热模式时，需要单向阀对冷媒有导通作用。以第一单向阀为例，如果第一单向阀发生堵塞故障，则会使更多冷媒进入最下方换热支路，同时进入其他换热支路的冷媒变少。这就会对各条换热支路的运行参数产生影响。而中间换热支路的前后都布置 有单向阀，通过中间换热支路的运行参数难以判断出是哪个单向阀发生故障。冷媒在最下方换热支路和最上方换热支路的流通路径上，均只有一个单向阀，比较容易判断出发生故障的单向阀的位置。这种情况下，第一主管与最上方换热支路的运行参数的差值、第一主管与第二主管的运行参数的差值、以及第一主管与最下方换热支路的运行参数的差值，均会与正常情况下的差值有所不同。因此，如果运行模式为制热模式，将第一主管、第二主管、最下方换热支路和最上方换热支路确定为目标管路。可选地，最上方换热支路上的传感器设置于经过换热的部分(相对于制热模式而言)。这是因为：如果设置于未经过换热器的部分，检测的运行参数为未经过换热后的运行参数，无法准确判断单向阀是否发生故障。
这样，基于空调的运行模式并结合单向阀的作用，在各条换热支路和冷媒输送管路中，选择适宜的管路作为需要监测的目标管路，以便准确确定出发生故障的单向阀。
结合图9，本公开实施例提供另一种用于诊断空调单向阀故障的方法，包括：
S701，处理器确定空调的运行模式。
S702，处理器根据运行模式，在各条换热支路和冷媒输送管路中确定多个目标管路。
S713，处理器在目标管路中，确定多组比较管路。
S723，处理器计算同一组的比较管路的运行参数的差值。
S733，处理器根据计算得到的多个差值，确定第一单向阀和/或第二单向阀的故障情况。
在多个目标管路中，确定两个目标管路为一组的多组比较管路。计算同一组中的两个目标管路的运行参数的差值，并利用差值确定第一单向阀和/或第二单向阀的故障情况。例如，当第二单向阀发生泄漏故障时，会使一部分冷媒不经过换热器，直接流入最下方换热支路。那么最下方换热支路的运行参数(温度或压力)就会偏低。因此，可以利用第二单向阀前后管路的运行参数的差值，即利用第二主管和最下方换热制的运行参数的差值，判断第二单向阀是否发生故障。
可选地，步骤S713，处理器在目标管路中，确定多组比较管路，包括：
处理器在运行模式为制冷模式的情况下，确定第二主管与最下方换热支路为第一组比较管路，第二主管与第一主管为第二组比较管路。
处理器在运行模式为制热模式的情况下，确定第一主管与最上方换热支路为第三组比较管路，第一主管与第二主管为第四组比较管路，第一主管与最下方换热支路为第五组比较管路。
当运行模式为制冷模式时，如果第二单向阀发生泄漏故障，则从第二主管流出的冷媒， 一部分未经换热直接流入最下方换热支路中，然后流入第一主管中。如果第一单向阀发生泄漏故障，则一部分冷媒通过第一单向阀和第一分液器直接进入第一主管中，流入最下方换热支路中的冷媒减少。以上两种情况就会使得第二主管与最下方换热支路的运行参数的差值、以及第二主管与第一主管的运行参数的差值与正常情况不同。因此，确定第二主管与最下方换热支路为第一组比较管路，第二主管与第一主管为第二组比较管路。通过第一组比较管路的运行参数的差值，和第二组比较管路的运行参数的差值，确定第一单向阀和/或第二单向阀的故障情况。
当运行模式为制热模式时，如果第二单向阀发生故障，最上方换热支路的冷媒流量会增大，则最上方换热支路和第一主管的运行参数会偏低。因此，确定第一主管与最上方换热支路为第三组比较管路，第一主管与第二主管为第四组比较管路。通过第三组比较管路的运行参数的差值，和第四组比较管路的运行参数的差值，确定第二单向阀的故障情况。如果第一单向阀发生堵塞故障，最上方换热支路的冷媒流量会减少，最上方换热支路的冷媒流量会增大。则最上方换热支路的运行参数会偏高，最下方换热支路的运行参数会偏低。因此，确定第一主管与最下方换热支路为第五组比较管路。通过第三组比较管路的运行参数的差值，和第五组比较管路的运行参数的差值，确定第一单向阀的故障情况。
可选地，步骤S733，处理器根据计算得到的多个差值，确定第一单向阀和/或第二单向阀的故障情况，包括：
处理器在第一组比较管路的运行参数的差值、以及第二组比较管路的运行参数的差值满足第一预设差值条件的情况下，确定第一单向阀发生泄漏故障。
处理器在第一组比较管路的运行参数的差值、以及第二组比较管路的运行参数的差值满足第二预设差值条件的情况下，确定第二单向阀发生泄漏故障。
处理器在第三组比较管路的运行参数的差值、以及第四组比较管路的运行参数的差值满足第三预设差值条件的情况下，确定第一单向阀发生堵塞故障。
处理器在第三组比较管路的运行参数的差值、以及第五组比较管路的运行参数的差值满足第四预设差值条件的情况下，确定第二单向阀发生堵塞故障。
通过各个目标管路上设置的传感器，实时获取第二主管的运行参数Sa、最下方换热支路的运行参数Sb、第一主管的运行参数Sc、以及最上方换热支路的运行参数Sd。
第一预设差值条件为：Sa-Sb≤A，且Sa-Sc≤B。其中，A为第一参数阈值，B为第二参数阈值。
第二预设差值条件为：Sa-Sb≥C，且Sa-Sc≤D。其中，C为第三参数阈值，D为第四参数阈值。
第三预设差值条件为：Sc-Sd≤E，且Sc-Sa≤F。其中，E为第五参数阈值，F为第六参数阈值。
第四预设差值条件为：Sc-Sb≤G，且Sc-Sd≥H。其中，G为第七参数阈值，H为第八参数阈值。
如果满足第一预设差值条件，确定第一单向阀发生泄漏故障。如果满足第二预设差值条件，确定第二单向阀发生泄漏故障。如果满足第三预设差值条件，确定第一单向阀发生堵塞故障。如果满足第四预设差值条件，确定第二单向阀发生堵塞故障。
根据压缩机的运行频率，确定第一参数阈值A、第二参数阈值B、第三参数阈值C、第四参数阈值D、第五参数阈值E、第六参数阈值F、第七参数阈值G和第八参数阈值H的具体取值。空调的处理器中预先存储有压缩机运行频率与参数阈值的关联关系。该关联关系包含一个或多个运行频率与参数阈值之间的对应关系。
下面将以运行参数为管路温度为例，具体介绍如何确定运行频率与参数阈值的关联关系：
1.空调运行制冷模式时，将第二单向阀换为泄漏故障单向阀。控制压缩机以其运行范围内的最低频率M1运行。记录第一传感器、第二传感器和第三传感器检测到的温度Ta1、Tb1和Tc1。因第二单向阀泄漏，部分冷媒未经过换热器换热直接进入第三分液器，所以Tb1、Tc1偏低。计算Ta1-Tb1＝A1、以及Ta1-Tc1＝B1，记录A1、B1的值。将压缩机运行频率调为M2，重复上述步骤，并记录A2、B2的值。将压缩机频率每隔一定的频率差值升至运行范围内最高运行频率Mn，重复上述步骤，记录数值如表1。
压缩机频率 Ta Tb Tc A B
M1 Ta1 Tb1 Tc1 A1 B1
M2 Ta2 Tb2 Tc2 A2 B2
M3 Ta3 Tb3 Tc3 A3 B3
… … … … … …
Mn-1 Ta(n-1) Tb(n-1) Tc(n-1) A(n-1) B(n-1)
Mn Tan Tbn Tcn An Bn
表1压缩机运行频率与第一温度阈值和第二温度阈值的关联关系
2.空调运行制冷模式时，将第一单向阀换为泄漏故障单向阀。此时部分冷媒不经第一单向阀直接进入第一分液器。流经第三分液器的冷媒减少，导致Tb偏高，Tc偏低。控制压缩机频率每隔一定的频率差值由M1运行到Mn，记录n组Ta、Tb和Tc。计算Ta-Tb＝C，Ta-Tc＝D，如表2所示。
压缩机频率 Ta Tb Tc C D
M1 Ta1 Tb1 Tc1 C1 D1
M2 Ta2 Tb2 Tc2 C2 D2
M3 Ta3 Tb3 Tc3 C3 D3
… … … … … …
Mn-1 Ta(n-1) Tb(n-1) Tc(n-1) C(n-1) D(n-1)
Mn Tan Tbn Tcn Cn Dn
表2压缩机运行频率与第三温度阈值和第四温度阈值的关联关系
3.空调运行制热工况时，将第二单向阀换为堵塞故障的单向阀。此时，通过第三换热支路的制冷剂流量变大。因此，第四传感器记录的温度Td偏低，第一传感器记录的温度Ta偏低。按照上述方式，控制压缩机以不同频率运行。记录不同频率对应的第一传感器、第三传感器和第四传感器检测到的温度Ta、Tc和Td。计算Tc-Td＝E、以及Tc-Ta＝F。得到压缩机运行频率与第五温度阈值E和第六温度阈值F的关联关系。
4.空调运行制热工况时，将第一单向阀换为堵塞故障的单向阀。此时，通过第三换热支路的制冷剂流量减少，通过第一换热支路的制冷剂流量增加。因此，第四传感器检测的温度Td偏高，第二传感器检测的温度Tb偏低。按照上述方式，控制压缩机以不同频率运行。记录不同频率对应的第一传感器、第二传感器和第四传感器检测到的温度Ta、Tb和Td。计算Tc-Tb＝G、以及Tc-Td＝H。得到压缩机运行频率与第七温度阈值G和第八温度阈值H的关联关系。
如果运行参数为管路压力，则压缩机运行频率与各个压力阈值的关联关系的确定方法与上述方法相同，此处不再赘述。
将得到的上述关联关系存储在空调处理器中。这样，当空调运行时，就可以根据空调的运行模式和压缩机的运行频率，得到对应的参数阈值。如果压缩机的运行频率介于表中两个频率之间，则采用内插法计算A、B、C、D、E、F、G和H的数值。
结合图10所示，本公开实施例提供另一种用于诊断空调单向阀故障的方法，包括：
S701，处理器确定所述空调的运行模式。
S702，处理器根据运行模式，在各条所述换热支路和所述冷媒输送管路中确定多个目标管路。
S703，处理器根据预先获取各个目标管路的运行参数，确定所述第一单向阀和/或所述第二单向阀的故障情况。
S704，处理器切换空调的运行模式预设次数，以排除故障。
S705，处理器重新确定所述第一单向阀和所述第二单向阀的故障情况。
S706，处理器在第一单向阀和/或第二单向阀仍然存在故障的情况下，发送报警提示。
在确定第一单向阀和/或第二单向阀发生故障后，向远程云端发送报警提示，以提醒工程师处理单向阀的故障。或者，自动切换运行模式，即控制空调在运行制热模式和运行制冷模式之间切换。由于运行模式的改变，换热器内的冷媒流动方向也会变化。这样，利用冷媒对阀芯的冲击，使单向阀的阀芯重新与限位部件配合。如此切换预设次数，例如切换3～4次。然后按照前文的方法，重新确定第一单向阀和第二单向阀的故障情况。如果第一单向阀和/或第二单向阀仍然存在故障，则有可能是阀芯磨损，需要更换。这种情况下，空调发送报警提示，以提醒用户或工程师及时更换阀芯。可选地，空调发送报警提示的方式有多种。例如，空调可以通过自身具有的语音模块发送语音报警提示，以提醒用户；也可以通过自身具有的通信模块与终端设备(例如手机、电脑等)通信连接，向终端设备发送报警提示，从而提醒用户；也可以向远程云端发送报警提示，以提醒工程师处理。
结合图11所示，本公开实施例提供一种用于诊断空调单向阀故障的装置11，包括：第一确定模块111、第二确定模块112和第三确定模块113。第一确定模块111被配置为确定所述空调的运行模式。第二确定模块111被配置为根据运行模式，在各条所述换热支路和所述冷媒输送管路中确定多个目标管路。第三确定模块111被配置为根据预先获取各个目标管路的运行参数，确定所述第一单向阀和/或所述第二单向阀的故障情况。
结合图12所示，本公开实施例提供一种用于诊断空调单向阀故障的装置12，包括处理器(processor)120和存储器(memory)121。可选地，该装置还可以包括通信接口(Communication Interface)122和总线123。其中，处理器120、通信接口122、存储器121可以通过总线123完成相互间的通信。通信接口122可以用于信息传输。处理器120可以调用存储器121中的逻辑指令，以执行上述实施例的用于诊断空调单向阀故障的方法。
此外，上述的存储器121中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。
存储器121作为一种计算机可读存储介质，可用于存储软件程序、计算机可执行程序，如本公开实施例中的方法对应的程序指令/模块。处理器120通过运行存储在存储器121中的程序指令/模块，从而执行功能应用以及数据处理，即实现上述实施例中用于诊断空调单向阀故障的方法。
存储器121可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据终端设备的使用所创建的数据等。此外，存储器121可以包括高速随机存取存储器，还可以包括非易失性存储器。
本公开实施例提供了一种空调，包含上述的用于诊断空调单向阀故障的装置。
本公开实施例提供了一种存储介质，存储有计算机可执行指令，所述计算机可执行指令设置为执行上述用于诊断空调单向阀故障的方法。
上述的存储介质可以是暂态计算机可读存储介质，也可以是非暂态计算机可读存储介质。
本公开实施例提供了一种计算机程序，当所述计算机程序被计算机执行时，使所述计算机实现上述用于诊断空调单向阀故障的方法。
本公开实施例提供了一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机指令，当所述程序指令被计算机执行时，使所述计算机实现上述用于诊断空调单向阀故障的方法。
以上描述和附图充分地示出了本公开的实施例，以使本领域的技术人员能够实践它们。其他实施例可以包括结构的、逻辑的、电气的、过程的以及其他的改变。实施例仅代表可能的变化。除非明确要求，否则单独的部件和功能是可选的，并且操作的顺序可以变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。而且，本申请中使用的用词仅用于描述实施例并且不用于限制权利要求。如在实施例以及权利要求的描述中使用的，除非上下文清楚地表明，否则单数形式的“一个”(a)、“一个”(an)和“所述”(the)旨在同样包括复数形式。类似地，如在本申请中所使用的术语“和/或”是指包含一个或一个以上相关联的列出的任何以及所有可能的组合。另外，当用于本申请中时，术语“包括”(comprise)及其变型“包括”(comprises)和/或包括(comprising)等指陈述的特征、整体、步骤、操作、元素，和/或组件的存在，但不排除一个或一个以上其它特征、整体、步骤、操作、元素、组件和/或这些的分组的存在或添加。在没有更多限制的情况下，由语句“包括一个…”限定的要素，并不排除在包括所述要素的过程、方法或者设备中还存在另外的相同要素。本文中，每个实施例重点说明的可以是与其他实施例的不同之处，各个实施例之间相同相似部分可以互相参见。对于实施例公开的方法、产品等而言，如果其与实施例公开的方法部分相对应，那么相关之处可以参见方法部分的描述。
本领域技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，可以取决于技术方案的特定应用和设计约束条件。所述技术人员可以对每个特定的应用来使用不同方法以实现所描述的功能，但是这种实现不应认为超出本公开实施例的范围。所述技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘 述。
本文所披露的实施例中，所揭露的方法、产品(包括但不限于装置、设备等)，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，可以仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例。另外，在本公开实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
附图中的流程图和框图显示了根据本公开实施例的系统、方法和计算机程序产品的可能实现的体系架构、功能和操作。在这点上，流程图或框图中的每个方框可以代表一个模块、程序段或代码的一部分，所述模块、程序段或代码的一部分包含一个或多个用于实现规定的逻辑功能的可执行指令。在有些作为替换的实现中，方框中所标注的功能也可以以不同于附图中所标注的顺序发生。例如，两个连续的方框实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。在附图中的流程图和框图所对应的描述中，不同的方框所对应的操作或步骤也可以以不同于描述中所披露的顺序发生，有时不同的操作或步骤之间不存在特定的顺序。例如，两个连续的操作或步骤实际上可以基本并行地执行，它们有时也可以按相反的顺序执行，这可以依所涉及的功能而定。框图和/或流程图中的每个方框、以及框图和/或流程图中的方框的组合，可以用执行规定的功能或动作的专用的基于硬件的系统来实现，或者可以用专用硬件与计算机指令的组合来实现。

Claims (12)

  1. 一种用于诊断空调单向阀故障的方法，所述空调包括：换热器，能够在运行模式改变的情况下，改变冷媒在所述换热器内的流通路径；所述换热器包括：多条换热支路和多条冷媒输送管路；在所述空调运行制热模式的情况下，各条所述换热器的冷媒流入侧设置有第一单向阀，冷媒流出侧设置有第二单向阀；其特征在于，所述方法包括：
    确定所述空调的运行模式；
    根据运行模式，在各条所述换热支路和所述冷媒输送管路中确定多个目标管路；
    根据预先获取各个目标管路的运行参数，确定所述第一单向阀和/或所述第二单向阀的故障情况。
  2. 根据权利要求1所述的方法，其特征在于，所述冷媒输送管路包括：第一主管和第二主管，其中，所述第一主管与最下方换热支路相连通，所述第二主管与最上方换热支路相连通；在运行模式为制热模式的情况下，所述第一主管位于所述换热器的冷媒流入侧，所述第二主管位于所述换热器的冷媒流出侧；所述根据运行模式，在各条所述换热支路和所述冷媒输送管路中确定多个目标管路，包括：
    在运行模式为制冷模式的情况下，将所述第一主管、所述第二主管和最下方换热支路确定为目标管路；
    在运行模式为制热模式的情况下，将所述第一主管、所述第二主管、最下方换热支路和最上方换热支路确定为目标管路。
  3. 根据权利要求2所述的方法，其特征在于，根据预先获取各个目标管路的预设参数，确定所述第一单向阀和/或所述第二单向阀的故障情况，包括：
    在目标管路中，确定多组比较管路；
    计算同一组的比较管路的运行参数的差值；
    根据计算得到的多个差值，确定所述第一单向阀和/或所述第二单向阀的故障情况。
  4. 根据权利要求3所述的方法，其特征在于，所述在目标管路中，确定多组比较管路，包括：
    在运行模式为制冷模式的情况下，确定所述第二主管与最下方换热支路为第一组比较管路，所述第二主管与所述第一主管为第二组比较管路；
    在运行模式为制热模式的情况下，确定所述第一主管与最上方换热支路为第三组比较管路，所述第一主管与所述第二主管为第四组比较管路，所述第一主管与所述最下方换热支路为第五组比较管路。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，在所述确定所述第一单向阀和/或所述第二单向阀的故障情况之后，所述方法还包括：
    切换空调的运行模式预设次数，以排除故障。
  6. 根据权利要求5所述的方法，其特征在于，在所述切换空调的运行模式预设次数之后，所述方法还包括：
    重新确定所述第一单向阀和所述第二单向阀的故障情况；
    在所述第一单向阀和/或所述第二单向阀仍然存在故障的情况下，发送报警提示。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，
    运行参数为管路压力或管路温度。
  8. 一种用于诊断空调单向阀故障的装置，包括处理器和存储有程序指令的存储器，其特征在于，所述处理器被配置为在运行所述程序指令时，执行如权利要求1至7中任一项所述的用于诊断空调单向阀故障的方法。
  9. 一种空调，包括：
    换热器，能够在运行模式改变的情况下，改变冷媒在所述换热器内的流通路径；
    所述换热器包括：多条换热支路和多条冷媒输送管路；
    第一单向阀，设置于所述空调运行制热模式时，各条所述换热支路的冷媒流入侧；
    第二单向阀，设置于所述空调运行制热模式时，各条所述换热支路的冷媒流出侧；
    其特征在于，还包括：
    如权利要求8所述的用于诊断空调单向阀故障的方法的装置。
  10. 一种存储介质，存储有程序指令，其特征在于，所述程序指令在运行时，执行如权利要求1至7中任一项所述的用于诊断空调单向阀故障的方法。
  11. 一种计算机程序，当所述计算机程序被计算机执行时，使所述计算机实现如权利要求1至7任一项所述的用于诊断空调单向阀故障的方法。
  12. 一种计算机程序产品，所述计算机程序产品包括存储在计算机可读存储介质上的计算机指令，当所述程序指令被计算机执行时，使所述计算机实现如权利要求1至7任一项所述的用于诊断空调单向阀故障的方法。
PCT/CN2022/137537 2022-07-27 2022-12-08 用于诊断空调单向阀故障的方法、装置、空调和存储介质 WO2024021430A1 (zh)

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