Detection method of air conditioner stop valve and related device

Abstract

The invention discloses a detection method and related device for an air conditioner stop valve, and the method comprises the steps: an air conditioner system responds to a heating instruction, and carries out the first detection of the circulation performance of the stop valve of the air conditioner system according to the phase current of a compressor of the air conditioner system and the temperature of an indoor coil pipe of the air conditioner system, and obtains a preliminary detection result; and in response to the preliminary detection result that the circulation performance is abnormal, performing second detection on the circulation performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil pipe of the air conditioning system to obtain a target detection result, so that the fault judgment accuracy of the air conditioning system in the heating mode can be improved; and the misjudgment risk caused by environment change and system aging is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning system control, and in particular to a detection method and related device for an air-conditioning stop valve. Background Art

[0002] The structure and working principle of the air conditioning system will be different in different working modes. In the heating mode, the flow of refrigerant is the key to the heating process. When the shut-off valves of the air conditioning system are fully closed, the refrigerant on the high-pressure side of the compressor of the air conditioning system cannot flow to the indoor unit condenser, making it difficult for the heat release process to proceed normally. In this case, the refrigerant pressure on the high-pressure side of the compressor will continue to increase, resulting in the continuous accumulation of high-pressure pressure, and the compressor phase current will also increase accordingly. However, since the refrigerant cannot circulate, the high-temperature gas inside the compressor cannot be quickly transferred out, and the exhaust temperature rises slowly.

[0003] However, most existing methods of air conditioner shutoff valve detection methods mainly detect the compressor exhaust temperature, indoor coil temperature and current comparison value in the cooling mode to determine whether the control system has a fault. However, due to the influence of factors such as the age of the air conditioner and the installation environment, there may be a risk of misjudgment in its judgment criteria, especially in long-term air conditioning systems, the change trends of the exhaust temperature, coil temperature and current value may deviate due to environmental conditions and system aging. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a detection method and related device for an air-conditioning stop valve, which can improve the accuracy of fault judgment of the air-conditioning system in the heating mode and reduce the risk of misjudgment due to environmental changes and system aging.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a method for detecting an air conditioner stop valve, the method for detecting an air conditioner stop valve comprising: The air conditioning system responds to the heating instruction, performs a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, and obtains a preliminary detection result; In response to the preliminary detection result indicating that the flow performance is abnormal, a second detection is performed on the flow performance of the stop valve based on the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system to obtain a target detection result.

[0006] In some embodiments, the first detection of the flow performance of the stop valve of the air conditioning system is performed according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system to obtain a preliminary detection result, including: In response to the operating frequency of the compressor reaching a preset frequency threshold, controlling the compressor to operate for a preset first time period to obtain a first phase current change of the compressor corresponding to the first time period and a temperature difference of the indoor coil; According to the change in the first phase current and the temperature difference of the indoor coil, a preliminary detection is performed on the stop valve of the air-conditioning system to obtain the preliminary detection result.

[0007] In some embodiments, performing a preliminary detection on the stop valve of the air conditioning system according to the first phase current variation and the temperature difference of the indoor coil to obtain the preliminary detection result includes: In response to the first phase current variation being greater than a preset first current threshold and the temperature difference of the indoor coil being less than a preset first temperature threshold, the preliminary detection result is determined to be abnormal.

[0008] In some embodiments, in response to the preliminary detection result indicating that the flow performance is abnormal, a second detection is performed on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system to obtain a target detection result, including: In response to the preliminary detection result that the flow performance is abnormal, the outdoor fan of the air conditioning system is turned off, and the compressor is controlled to run for a preset second time period to obtain a second phase current change of the compressor and a temperature difference of the outdoor coil corresponding to the second time period; The stop valve is detected according to the first phase current change, the second phase current change and the temperature difference of the outdoor coil to obtain a target detection result.

[0009] In some embodiments, the detecting of the stop valve according to the first phase current change, the second phase current change and the temperature difference of the outdoor coil to obtain the target detection result includes: In response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, it is determined that the target detection result is that the stop valve is abnormally blocked.

[0010] In some embodiments, in response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, determining that the target detection result is that the stop valve is abnormally blocked, then comprising: The stop valve is protected from blocking.

[0011] In some embodiments, in response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, determining that the target detection result is that the stop valve is abnormally blocked, then comprising: An abnormality alarm is sent to a mobile device that communicates with the air conditioning system.

[0012] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide a detection device for an air-conditioning stop valve, the detection device for the air-conditioning stop valve comprising: A first detection module, for the air conditioning system to respond to a heating instruction, and to perform a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, so as to obtain a preliminary detection result; The second detection module is used to respond to the preliminary detection result that the flow performance is abnormal, and perform a second detection on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air-conditioning system to obtain a target detection result.

[0013] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide an electronic device, the electronic device comprising: A memory for storing executable program codes; The processor is used to call and run the executable program code from the memory, so that the electronic device executes the air conditioning stop valve detection method as described in any one of the above.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: providing a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the detection method of the air conditioning stop valve as described in any one of the above items is implemented.

[0015] The embodiment of the present application provides a method for detecting an air-conditioning stop valve, the method comprising: the air-conditioning system responds to a heating instruction, performs a first detection on the flow performance of the stop valve of the air-conditioning system according to the phase current of the compressor of the air-conditioning system and the temperature of the indoor coil of the air-conditioning system, and obtains a preliminary detection result; in response to the preliminary detection result that the flow performance is abnormal, performs a second detection on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air-conditioning system, and obtains a target detection result. The air-conditioning system is in the heating mode, and the flow performance of the stop valve is evaluated by combining the phase current of the compressor and the temperature of the indoor coil; if the detection result shows that the flow is abnormal, a secondary detection is performed in combination with the phase current of the compressor and the temperature of the outdoor coil to obtain a detection result of whether the stop valve is blocked, which can improve the accuracy of fault judgment of the air-conditioning system in the heating mode and reduce the risk of misjudgment caused by environmental changes and system aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of a first embodiment of a method for detecting an air conditioner stop valve of the present application; Figure 2 It is a flow chart of a second embodiment of the method for detecting an air conditioner stop valve of the present application; Figure 3 This is a schematic diagram of an exemplary application scenario of the detection method of the air conditioner stop valve of the present application; Figure 4 It is an exemplary structural block diagram of an electronic device of the present application's method for detecting an air conditioner stop valve; Figure 5 It is an exemplary structural block diagram of a computer-readable storage medium of the air-conditioning stop valve detection method of the present application. DETAILED DESCRIPTION

[0017] The present application is described in detail below with reference to the accompanying drawings and implementation methods.

[0018] This embodiment takes into account that in the heating mode, the flow of refrigerant is the key to the heating process. When the stop valve is fully closed, the refrigerant on the high-pressure side of the compressor cannot flow to the indoor unit condenser, so that the heat release process of the air conditioner cannot proceed normally. In this case, the refrigerant pressure on the high-pressure side of the compressor will continue to rise, resulting in the continuous accumulation of high-pressure pressure, and the compressor phase current will also increase accordingly. However, since the refrigerant cannot circulate, the high-temperature gas inside the compressor cannot be quickly transferred out, and the exhaust temperature rises relatively slowly. Therefore, this embodiment can effectively judge the state of the stop valve and whether there is a blockage through a comprehensive analysis of the indoor unit coil temperature changes and the compressor phase current change trends.

[0019] In some embodiments, see Figure 1 , Figure 1 1 is a flow chart of the first embodiment of the detection method of the air conditioner stop valve of the present application. It should be noted that if there are substantially the same results, the method of the present application is not based on Figure 1 The process sequence shown is limited. Figure 1 As shown, the detection method of the air conditioning stop valve includes: Step S101, in response to a heating instruction, the air conditioning system performs a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system to obtain a preliminary detection result; As an illustrative example, the phase current of the compressor is positively correlated with the refrigerant flow rate. Under normal circumstances, as the heating load increases, the phase current of the compressor will also increase accordingly. If there is a flow obstruction or valve blockage in the system, the compressor needs more power to drive the refrigerant flow, which will cause the phase current to increase significantly. At the same time, the temperature change of the indoor coil can also reflect the change in heat exchange efficiency. If the coil temperature fails to rise as expected, or changes too slowly, it may indicate that the refrigerant is not flowing smoothly, further verifying that there is an abnormality in the valve flow performance. Therefore, after receiving the heating command, the air-conditioning system can perform a preliminary test on the flow performance of the shut-off valve by detecting the phase current of the compressor and the temperature of the indoor coil.

[0020] Among them, flow performance can be the flow efficiency of refrigerant, air or other media (such as water) passing through components such as stop valves in the air-conditioning system. It is used to reflect the smoothness of pipelines or components, and specifically may involve parameters such as fluid flow rate, pressure loss, and heat exchange efficiency.

[0021] Step S102, in response to the preliminary detection result that the flow performance is abnormal, a second detection is performed on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air-conditioning system to obtain a target detection result.

[0022] As an example, if the preliminary detection result of the first stage shows that the flow performance is abnormal, the air conditioning system responds to the abnormal result and then enters the second stage of the detection process. Since the temperature change of the outdoor coil in the heating mode can be used to reflect the evaporation process of the outdoor unit, the air conditioning system can further confirm whether the flow performance is actually abnormal and faulty by combining the changes in the compressor phase current and the temperature of the outdoor coil.

[0023] Therefore, when the initial test results indicate that the circulation performance may be abnormal, the compressor phase current and outdoor coil temperature are further tested. That is, through multi-dimensional and multi-level detection methods, the risk of misjudgment caused by fluctuations in a single parameter or changes in the external environment can be effectively reduced, thereby improving the accuracy of fault diagnosis. It can provide users with more accurate fault diagnosis information, especially when the air conditioning system is aging or the environment changes greatly, and its operating parameters can be dynamically adjusted according to real-time detection data.

[0024] In this embodiment, the air-conditioning system is in the heating mode, and the detection is combined with the phase current of the compressor and the temperature of the indoor coil to evaluate the flow performance of the stop valve. If the detection result shows that the flow is abnormal, a secondary detection is performed in combination with the phase current of the compressor and the temperature of the outdoor coil to obtain the detection result of whether the stop valve is blocked, which can improve the fault judgment accuracy of the air-conditioning system in the heating mode and reduce the risk of misjudgment due to environmental changes and system aging.

[0025] See also Figure 2 , Figure 2 This is a flow chart of the second embodiment of the detection method of the air conditioner stop valve of the present application. The method comprises the following steps: Step S201, in response to a heating instruction and in response to the operating frequency of the compressor reaching a preset frequency threshold, the air conditioning system controls the compressor to operate for a preset first time period, so as to obtain a first phase current change of the compressor corresponding to the first time period and a temperature difference of the indoor coil; The frequency threshold may be a critical value of the compressor operating frequency. When the compressor operating frequency reaches or exceeds this threshold, the compressor operates at a higher speed. In this case, if the shutoff valve fails (such as being blocked or partially blocked), the compressor requires more power to maintain the flow due to the obstruction of the flow of the refrigerant, so that any flow obstruction (such as a shutoff valve failure) can cause a more obvious phase current change, which is easy to detect.

[0026] The first phase current variation is the phase current variation of the compressor in the first time period. Combining the first phase current variation and the frequency threshold value can reflect the flow condition of the refrigerant in the air conditioning system and the heat exchange efficiency.

[0027] As an illustrative example, the first time period and the frequency threshold can be set according to actual conditions. For example, the first time period can be any value between 120s and 240s, and the frequency threshold can be any value between 30Hz and 80Hz.

[0028] Step S202: Perform a preliminary detection on the stop valve of the air-conditioning system according to the change in the first phase current and the temperature difference of the indoor coil to obtain the preliminary detection result.

[0029] As an illustrative example, in order to evaluate the flow performance of the stop valve and determine whether it is blocked or partially blocked, a preliminary detection can be performed based on the acquired first-phase current change and the temperature difference of the indoor coil.

[0030] Step S203, in response to the preliminary detection result indicating that the flow performance is abnormal, turning off the outdoor fan of the air conditioning system, and controlling the compressor to run for a preset second time period, so as to obtain a second phase current change of the compressor and a temperature difference of the outdoor coil corresponding to the second time period; Among them, the second phase current change is detected in the second time period when the external fan is turned off and the compressor is running. Since turning off the external fan reduces the heat dissipation capacity of the system, the load of the compressor will be reduced, resulting in a decrease in the phase current. If the stop valve is blocked, the refrigerant flow resistance increases, the compressor load will be greater, and the phase current change will be higher. Therefore, the second phase current change is greater than the first phase current change, which is an important judgment condition for valve blockage.

[0031] The temperature difference can refer to the difference in temperature between the inlet and outlet of the outdoor coil. Normally, when the refrigerant flows smoothly in the coil, the temperature difference will be large because the refrigerant will undergo significant heat exchange in the coil. If the stop valve is blocked, the refrigerant flow is blocked, the amount of refrigerant entering the outdoor coil is reduced, and the heat exchange is insufficient, resulting in a decrease in the temperature difference between the two ends of the coil. Therefore, when the temperature difference is less than the preset threshold, it indicates that the refrigerant flow is insufficient, further confirming that the stop valve is blocked.

[0032] As an illustrative example, the second time period may be any value between 120s and 240s.

[0033] Step S204: Detect the stop valve according to the first phase current change, the second phase current change and the temperature difference of the outdoor coil to obtain a target detection result.

[0034] As an illustrative example, the air conditioning system can comprehensively analyze the first-phase current change, the second-phase current change and the temperature difference of the outdoor coil, and further detect the flow performance of the shut-off valve. The target detection result can indicate that there is a flow problem or blockage in the valve or there is no flow problem.

[0035] In some embodiments, step S202 may include: in response to the first phase current change being greater than a preset first current threshold and the temperature difference of the indoor coil being less than a preset first temperature threshold, determining that the preliminary detection result is abnormal.

[0036] As an illustrative example, the first current threshold may be any value between 1.1 and 2. The first temperature threshold may be any value between 5° C. and 10° C.

[0037] In some embodiments, step S204 may include: in response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, determining that the target detection result is that the stop valve is abnormally blocked.

[0038] As an illustrative example, the second temperature threshold may be any value between 5°C and 10°C.

[0039] Among them, the blockage conditions include but are not limited to: complete blockage, such as the stop valve is completely closed and the refrigerant flow is completely blocked; partial blockage, such as a component in the valve is blocked by impurities or part of the pipeline is blocked by dust, oil, etc.; local blockage or backlog, for example, the narrow channel inside the valve may be partially blocked due to the accumulation of impurities; blockage caused by gas or liquid reflux, for example, the reverse flow of refrigerant may cause partial blockage of the condenser or evaporator; gradual blockage due to flow restriction, for example, after long-term operation, the filter or small valve may have chronic flow restriction due to the accumulation of contaminants.

[0040] See also Figure 3 In some exemplary embodiments, when the machine is turned on in the heating mode, the indoor fan is turned off when the machine is turned on, and when the compressor operating frequency reaches the frequency threshold value x, based on the frequency threshold value, the compressor is controlled to run to time t1, and the compressor phase current I1 and the indoor coil temperature Tc1 at this time are recorded; then, the compressor is controlled to run from time t1 to time t2, that is, the compressor is controlled to run for a preset first time period, and the compressor phase current I2 and the indoor coil temperature Tc2 at this time are recorded; then, the first phase current change ΔI1=(I2-I1) / I1 corresponding to the compressor in the first time period and the difference ΔTc=Tc2-Tc1 of the indoor coil temperature are calculated; then, the flow performance of the stop valve is pre-judged: if ΔI1>first current threshold value a, ΔTc<first temperature threshold value b, then enter the secondary judgment; if ΔI1≤first current threshold value a, ΔTc≥first temperature threshold value b, it indicates normal operation.

[0041] Second judgment: turn off the outdoor fan and start to detect the change trend of the outdoor coil temperature at the same time, the compressor phase current I3 and the outdoor coil temperature Te1 at t3; then, control the compressor to run the preset second time period, that is, control the compressor to run from t3 to t4, and record the compressor phase current I4 and the outdoor coil temperature Te2 at t4; then, calculate the second phase current change ΔI2=(I4-I3) / I3, the difference in outdoor coil temperature ΔTe=Te2-Te1, if ΔTe<the second temperature threshold c, ΔI2>the first phase current change ΔI1, it is judged that the air conditioning stop valve is blocked. That is, if the system stop valve is blocked, the indoor coil temperature will not rise, the outdoor coil temperature will drop slowly, the compressor phase current will continue to rise, and the phase current of the system will not drop if the outdoor fan is turned off in time, so it can be determined whether the stop valve is blocked.

[0042] This embodiment can detect the flow performance of the stop valve for different working environments and load conditions by adjusting parameters and preset thresholds. For example, in areas with high ambient temperature or after long-term operation, the preset time period and frequency threshold can be dynamically adjusted to adapt to actual working conditions and ensure the accuracy and timeliness of detection.

[0043] In some embodiments, after determining that the stop valve is abnormally blocked, the method may further include: performing blockage protection on the stop valve.

[0044] As an example, to prevent the compressor from being damaged due to overload, the system may automatically shut down the compressor or reduce its operating frequency. At the same time, components related to the shut-off valve, such as the external fan, can be turned off to reduce the pressure and load on the system. Blockages can also be cleared by automatically restarting or resetting.

[0045] In some embodiments, after determining that the stop valve is abnormally blocked, the method may further include: sending an abnormality alarm to a mobile device that communicates with the air conditioning system.

[0046] As an illustrative example, the alarm information can be sent to the user's mobile device, such as a smartphone or tablet, via Wi-Fi, Bluetooth, or mobile network. The alarm information may include a specific error code, a description of the problem, such as a blocked shut-off valve, and a suggested solution. In addition to notifications on mobile devices, the system can also alert users via email, text message, or notification functions on smart home devices. After receiving the alarm, the user can view detailed information and perform preliminary inspections through the mobile application. In addition, the alarm system can also combine past operating data to provide preventive maintenance recommendations, reminding users to perform regular inspections or replace parts that may be about to fail.

[0047] In this embodiment, through the blocking protection and / or alarm mechanism, the air conditioning system can not only effectively protect itself when a fault occurs and reduce the risk of damage, but also promptly notify the user to take action to minimize the impact of the fault on normal use.

[0048] In addition, the embodiment of the present application also provides a detection device for an air-conditioning stop valve, and the detection device for the air-conditioning stop valve includes: A first detection module, for the air conditioning system to respond to a heating instruction, and to perform a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, so as to obtain a preliminary detection result; The second detection module is used to respond to the preliminary detection result that the flow performance is abnormal, and perform a second detection on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air-conditioning system to obtain a target detection result.

[0049] See also Figure 4 , Figure 4 is an exemplary structural block diagram of an electronic device for the detection method of the air conditioner stop valve of the present application. Figure 4 As shown, the electronic device 400 of the present application may include a processor 401 and a memory 402, wherein the processor 401 and the memory 402 communicate with each other via a bus. The memory 402 stores program instructions for detecting an air conditioner stop valve, and when the program instructions are executed by the processor 401, the processor executes the above-mentioned related method steps to implement a method for detecting an air conditioner stop valve in the above-mentioned embodiment.

[0050] See also Figure 5 , Figure 5 is an exemplary structural block diagram of a computer-readable storage medium of the air conditioning stop valve detection method of the present application. Figure 5 As shown, the computer readable storage medium 500 stores a computer program 501. When the computer program 501 is executed by a processor on a computer, the computer executes the above-mentioned related method steps to implement a method for detecting an air conditioning stop valve in the above-mentioned embodiment.

[0051] In the above scheme, the air conditioning system responds to the heating instruction, performs a first test on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, and obtains a preliminary test result; in response to the preliminary test result that the flow performance is abnormal, a second test is performed on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system to obtain a target test result. In the heating mode of the air conditioning system, the flow performance of the stop valve is evaluated by testing in combination with the phase current of the compressor and the temperature of the indoor coil; if the test result shows that the flow is abnormal, a secondary test is performed in combination with the phase current of the compressor and the temperature of the outdoor coil to obtain a test result of whether the stop valve is blocked, which can improve the accuracy of fault judgment of the air conditioning system in the heating mode and reduce the risk of misjudgment due to environmental changes and system aging.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed methods, electronic devices and storage media can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0054] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0055] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to execute all or part of the steps of the detection method of the air conditioning stop valve described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0056] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for detecting an air conditioning stop valve, characterized in that: The detection method of the air conditioning stop valve comprises: The air conditioning system responds to the heating instruction, performs a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, and obtains a preliminary detection result; In response to the preliminary detection result indicating that the flow performance is abnormal, a second detection is performed on the flow performance of the stop valve based on the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system to obtain a target detection result.

2. The method for detecting an air conditioning stop valve according to claim 1, characterized in that: The first detection of the flow performance of the stop valve of the air conditioning system is performed according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system to obtain a preliminary detection result, including: In response to the operating frequency of the compressor reaching a preset frequency threshold, controlling the compressor to operate for a preset first time period to obtain a first phase current change of the compressor corresponding to the first time period and a temperature difference of the indoor coil; According to the change in the first phase current and the temperature difference of the indoor coil, a preliminary detection is performed on the stop valve of the air-conditioning system to obtain the preliminary detection result.

3. The method for detecting an air conditioning stop valve according to claim 2, characterized in that: The preliminary detection of the stop valve of the air conditioning system according to the first phase current variation and the temperature difference of the indoor coil to obtain the preliminary detection result includes: In response to the first phase current variation being greater than a preset first current threshold and the temperature difference of the indoor coil being less than a preset first temperature threshold, the preliminary detection result is determined to be abnormal.

4. The method for detecting an air conditioning stop valve according to claim 2, characterized in that: In response to the preliminary detection result indicating that the flow performance is abnormal, a second detection is performed on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system to obtain a target detection result, including: In response to the preliminary detection result that the flow performance is abnormal, the outdoor fan of the air conditioning system is turned off, and the compressor is controlled to run for a preset second time period to obtain a second phase current change of the compressor and a temperature difference of the outdoor coil corresponding to the second time period; The stop valve is detected according to the first phase current change, the second phase current change and the temperature difference of the outdoor coil to obtain a target detection result.

5. The method for detecting the air conditioner stop valve according to claim 4, characterized in that: The method of detecting the stop valve according to the first phase current change, the second phase current change and the temperature difference of the outdoor coil to obtain a target detection result includes: In response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, it is determined that the target detection result is that the stop valve is abnormally blocked.

6. The method for detecting an air conditioning stop valve according to claim 5, characterized in that: In response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, determining that the target detection result is that the stop valve is abnormally blocked, and then comprising: The stop valve is protected from blocking.

7. The method for detecting an air conditioning stop valve according to claim 5, characterized in that: In response to the second phase current change being greater than the first phase current change and the temperature difference of the outdoor coil being less than a preset second temperature threshold, determining that the target detection result is that the stop valve is abnormally blocked, and then comprising: An abnormality alarm is sent to a mobile device that communicates with the air conditioning system.

8. A detection device for an air conditioning stop valve, characterized in that: The detection device of the air conditioning stop valve includes: A first detection module, for the air conditioning system to respond to a heating instruction, and to perform a first detection on the flow performance of the stop valve of the air conditioning system according to the phase current of the compressor of the air conditioning system and the temperature of the indoor coil of the air conditioning system, so as to obtain a preliminary detection result; The second detection module is used to respond to the preliminary detection result that the flow performance is abnormal, and perform a second detection on the flow performance of the stop valve according to the phase current of the compressor and the temperature of the outdoor coil of the air-conditioning system to obtain a target detection result.

9. An electronic device, characterized in that: The electronic device comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the electronic device executes the method for detecting the air conditioning stop valve as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for detecting an air conditioning stop valve according to any one of claims 1 to 7 is implemented.

Images