Method for detecting air conditioning stop valve and related device

Abstract

The application discloses a detection method and related device of an air conditioner stop valve, and the method comprises the following steps: in response to a heating instruction, the air conditioner system performs first detection on the flow performance of the stop valve of the air conditioner system according to the phase current of the compressor of the air conditioner system and the temperature of the indoor coil of the air conditioner system, and obtains a preliminary detection result; in response to the fact that the preliminary detection result is that the flow performance is abnormal, the air conditioner system performs 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 conditioner system, and obtains a target detection result, so that the fault judgment accuracy of the air conditioner system in the heating mode can be improved, and the misjudgment risk caused by environmental changes and system aging can be reduced.

Description

TECHNICAL FIELD

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

[0002] The structure and working principle of an air conditioning system may vary under different working modes. In the heating mode, the flow of refrigerant is crucial to the heating process. When the stop valve of the air conditioning system is 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 continues to rise, causing the high-pressure pressure to accumulate continuously, and the compressor phase current also rises. However, due to the inability of the refrigerant to flow, the high-temperature gas inside the compressor cannot be quickly transmitted, and the rise in discharge temperature is relatively slow.

[0003] However, most existing air conditioning stop valve detection methods mainly detect the compressor discharge temperature, indoor coil temperature, and current comparison value in the cooling mode to determine whether the control system has a fault. However, due to factors such as the service life of the air conditioner, installation environment, etc., the judgment criteria may have the risk of misjudgment, especially in long-term use of the air conditioning system, the change trend of the discharge temperature, coil temperature, and current value may deviate due to environmental conditions and system aging. SUMMARY

[0004] The technical problem solved by the present application is to provide an air conditioning stop valve detection method and related device that 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.

[0005] To solve the above technical problems, one technical solution adopted by the present application is to provide an air conditioning stop valve detection method, which comprises:

[0006] The air conditioning system responds to a heating instruction, and 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, the flow performance of the stop valve of the air conditioning system is first detected to obtain a preliminary detection result.

[0007] In response to the preliminary detection result that the flow performance is abnormal, the flow performance of the stop valve is secondly detected 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.

[0008] In some embodiments, the first detection of the flow performance of the cut-off 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 obtains a preliminary detection result, including:

[0009] In response to the operating frequency of the compressor reaching a preset frequency threshold, the compressor is controlled to operate for a preset first time period to obtain a first phase current change amount of the compressor and a temperature difference of the indoor coil corresponding to the first time period;

[0010] The cut-off valve of the air conditioning system is preliminarily detected according to the first phase current change amount and the temperature difference of the indoor coil to obtain the preliminary detection result.

[0011] In some embodiments, the preliminary detection of the cut-off valve of the air conditioning system according to the first phase current change amount and the temperature difference of the indoor coil obtains the preliminary detection result, including:

[0012] In response to the first phase current change amount being greater than a preset first current threshold and the temperature difference of the indoor coil being less than a preset first temperature threshold, it is determined that the preliminary detection result is abnormal.

[0013] In some embodiments, in response to the preliminary detection result indicating that the flow performance is abnormal, the second detection of the flow performance of the cut-off valve according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system obtains a target detection result, including:

[0014] In response to the preliminary detection result indicating that the flow performance is abnormal, the outdoor fan of the air conditioning system is turned off, and the compressor is controlled to operate for a preset second time period to obtain a second phase current change amount of the compressor and a temperature difference of the outdoor coil corresponding to the second time period;

[0015] The cut-off valve is detected according to the first phase current change amount, the second phase current change amount, and the temperature difference of the outdoor coil to obtain a target detection result.

[0016] In some embodiments, the detection of the cut-off valve according to the first phase current change amount, the second phase current change amount, and the temperature difference of the outdoor coil obtains the target detection result, including:

[0017] In response to the second phase current change amount being greater than the first phase current change amount and the temperature difference of the outdoor coil being less than a preset second temperature threshold, it is determined that the target detection result indicates that the cut-off valve is abnormally blocked.

[0018] In some embodiments, the target detection result is determined as the abnormal blockage of the stop valve 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, and then includes:

[0019] Performing blockage protection on the stop valve.

[0020] In some embodiments, the target detection result is determined as the abnormal blockage of the stop valve 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, and then includes:

[0021] Sending an abnormal alarm to a mobile device in communication with the air conditioning system.

[0022] To solve the above technical problems, another technical solution adopted by the present application is to provide an air conditioning stop valve detection device, which comprises:

[0023] A first detection module is configured to perform first detection on the flow performance of the stop valve of the air conditioning system in response to a heating instruction, 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 obtain a preliminary detection result.

[0024] A second detection module is configured to perform second detection on the flow performance of the stop valve in response to the preliminary detection result indicating that the flow performance is abnormal, according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system, and obtain a target detection result.

[0025] To solve the above technical problems, another technical solution adopted by the present application is to provide an electronic device, which comprises:

[0026] A memory is configured to store executable program codes.

[0027] A processor is configured to call and run the executable program codes from the memory, so that the electronic device performs the air conditioning stop valve detection method according to any one of the above.

[0028] To solve the above technical problems, another technical solution adopted by the present application is to provide a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the air conditioning stop valve detection method according to any one of the above is implemented.

[0029] The embodiment of the present application provides a detection method of an air conditioner stop valve, which comprises the following steps: in response to a heating instruction, a compressor phase current of an air conditioner system and a temperature of an indoor coil of the air conditioner system are used to perform first detection on flow-through performance of a stop valve of the air conditioner system, so as to obtain a preliminary detection result; in response to the preliminary detection result indicating that the flow-through performance is abnormal, the compressor phase current and a temperature of an outdoor coil of the air conditioner system are used to perform second detection on the flow-through performance of the stop valve, so as to obtain a target detection result. The flow-through performance of the stop valve is evaluated by detecting the compressor phase current and the temperature of the indoor coil of the air conditioner system in the heating mode. If the detection result shows that the flow-through performance is abnormal, the compressor phase current and the temperature of the outdoor coil are used to perform secondary detection, so as to obtain a detection result of whether the stop valve is blocked. The fault judgment accuracy of the air conditioner system in the heating mode can be improved, and the misjudgment risk caused by environmental changes and system aging can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a flowchart of a first embodiment of the detection method of the air conditioner stop valve of the present application;

[0031] Figure 2 FIG. 2 is a flowchart of a second embodiment of the detection method of the air conditioner stop valve of the present application;

[0032] Figure 3 FIG. 3 is a schematic diagram of an exemplary application scenario of the detection method of the air conditioner stop valve of the present application;

[0033] Figure 4 FIG. 4 is an exemplary structural block diagram of an electronic device of the detection method of the air conditioner stop valve of the present application;

[0034] Figure 5 FIG. 5 is an exemplary structural block diagram of a computer readable storage medium of the detection method of the air conditioner stop valve of the present application. DETAILED DESCRIPTION

[0035] The present application will be described in detail below in combination with the drawings and embodiments.

[0036] The embodiment considers 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 continues to rise, causing the high-pressure pressure to continuously accumulate, and the compressor phase current also rises. However, due to the inability of the refrigerant to flow, the high-temperature gas in the compressor cannot be quickly transmitted, and the rise of the exhaust temperature is relatively slow. Therefore, by comprehensively analyzing the change of the indoor unit coil temperature and the change trend of the compressor phase current, the state of the stop valve and whether there is a blockage phenomenon can be effectively judged.

[0037] In some embodiments, referring to Figure 1 , Figure 1 is a flowchart of the first embodiment of the detection method of the air conditioner stop valve of the present application. It should be noted that the method of the present application is not limited to the order of the flowchart shown in Figure 1 . As shown in Figure 1 , the detection method of the air conditioner stop valve comprises:

[0038] Step S101, the air conditioning system responds to the heating instruction, and 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, the flow performance of the stop valve of the air conditioning system is first detected, and a preliminary detection result is obtained;

[0039] As an exemplary example, the phase current of the compressor is positively correlated with the refrigerant flow. 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 push the refrigerant flow, which will cause the phase current to increase significantly. At the same time, the change of the indoor coil temperature can also reflect the change of the heat exchange efficiency. If the coil temperature fails to rise as expected, or changes too slowly, it may indicate that the refrigerant flow is not smooth, and further verify that the flow performance of the valve is abnormal. Therefore, after receiving the heating instruction, the air conditioning system can detect the phase current of the compressor and the temperature of the indoor coil to preliminarily detect the flow performance of the stop valve.

[0040] Among them, the flow performance can be the flow efficiency of the refrigerant, air or other medium (such as water) passing through the stop valve and other components in the air conditioning system, which is used to reflect the smoothness of the pipeline or component, and can involve parameters such as flow rate, pressure loss and heat exchange efficiency.

[0041] Step S102, in response to the preliminary detection result that the flow performance is abnormal, performing 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.

[0042] For example, if the preliminary detection result of the first stage shows that the flow performance is abnormal, the air conditioning system responds to this abnormal result and then enters the detection process of the second stage. Since the temperature change of the outdoor coil can be used to reflect the evaporation process of the outdoor unit in the heating mode, the air conditioning system can further confirm whether the flow performance is truly abnormal and faulty by combining the phase current of the compressor and the temperature change of the outdoor coil.

[0043] Therefore, when the initial detection result indicates that the flow performance may be abnormal, the phase current of the compressor and the temperature of the outdoor coil are further detected, that is, through the multi-dimensional and multi-level detection method, the risk of misjudgment caused by the fluctuation of a single parameter or the change of the external environment can be effectively reduced, thereby improving the accuracy of fault diagnosis. More accurate fault diagnosis information can be provided for users, especially in the case of aging of the air conditioning system or large environmental changes, the working parameters can be dynamically adjusted according to the real-time detection data.

[0044] The embodiment detects the flow performance of the stop valve by combining the phase current of the compressor and the temperature of the indoor coil of the air conditioning system in the heating mode; if the detection result shows that the flow is abnormal, the phase current of the compressor and the temperature of the outdoor coil are combined for secondary detection 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 caused by environmental changes and system aging.

[0045] Please refer to Figure 2 , Figure 2 is a flowchart of a second embodiment of the detection method of the air conditioning stop valve of the present application. The method comprises the following steps:

[0046] Step S201, the air conditioning system responds to the heating instruction, and in response to the operating frequency of the compressor reaching a preset frequency threshold, controls the compressor to operate for a preset first time period to obtain the first phase current change of the compressor and the temperature difference of the indoor coil corresponding to the first time period.

[0047] The frequency threshold value can be a critical value of the operating frequency of the compressor. When the operating frequency of the compressor reaches or exceeds the threshold value, the operating speed of the compressor is high. In this case, if the shut-off valve fails (such as being blocked or partially blocked), the compressor needs more power to maintain the flow due to the obstruction of the flow of refrigerant, so that any flow obstruction (such as valve failure) can cause a more obvious change in phase current, facilitating detection.

[0048] The first phase current change amount is the phase current change amount of the compressor in the first time period. In combination with the first phase current change amount and the frequency threshold value, the flow condition and heat exchange efficiency of the refrigerant in the air conditioning system can be reflected.

[0049] As an exemplary example, the first time period and the frequency threshold value can be set according to actual conditions, for example, the first time period can be any value in 120s-240s, and the frequency threshold value can be any value in 30Hz-80Hz.

[0050] In step S202, the shut-off valve of the air conditioning system is preliminarily detected according to the first phase current change amount and the temperature difference of the indoor coil, and a preliminary detection result is obtained.

[0051] As an exemplary example, in order to evaluate the flow performance of the shut-off valve and determine whether there is a blockage or partial blockage, the first phase current change amount and the temperature difference of the indoor coil can be preliminarily detected.

[0052] In step S203, 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 operate for a preset second time period to obtain a second phase current change amount of the compressor corresponding to the second time period and a temperature difference of the outdoor coil.

[0053] The second phase current change amount is detected when the outdoor fan is turned off and the compressor operates for the second time period. Since turning off the outdoor fan reduces the heat dissipation capacity of the system, the load of the compressor will be reduced, resulting in a decrease in phase current. If the shut-off valve is blocked, the flow resistance of the refrigerant increases, and the load of the compressor will be greater, resulting in a higher phase current change amount. Therefore, the second phase current change amount being greater than the first phase current change amount is an important judgment condition for valve blockage.

[0054] The temperature difference can refer to a temperature difference between an inlet and an outlet of the outdoor coil. Normally, when the refrigerant flows smoothly in the coil, the temperature difference is large because the refrigerant exchanges heat significantly 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 a preset threshold, it indicates that the refrigerant flow is insufficient, further confirming that the stop valve is blocked.

[0055] As an exemplary example, the second time period can be any value in 120s-240s.

[0056] In step S204, the stop valve is detected according to the first phase current change amount, the second phase current change amount, and the temperature difference of the outdoor coil, to obtain a target detection result.

[0057] As an exemplary example, the air conditioning system can comprehensively analyze the first phase current change amount, the second phase current change amount, and the temperature difference of the outdoor coil, to further detect the flow performance of the stop valve. The target detection result can indicate that the valve has a flow problem or a blockage condition or does not have a flow problem.

[0058] In some embodiments, step S202 can include: in response to the first phase current change amount 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.

[0059] As an exemplary example, the first current threshold can be any value in 1.1-2. The first temperature threshold can be any value in 5°C-10°C.

[0060] In some embodiments, step S204 can include: in response to the second phase current change amount being greater than the first phase current change amount, 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 has an abnormal blockage.

[0061] As an exemplary example, the second temperature threshold can be any value in 5°C-10°C.

[0062] The blockage includes, but is not limited to, complete blockage, such as complete closing of a stop valve, complete stop of refrigerant flow; partial blockage, such as blockage of a certain part of the valve by impurities or blockage of a part of the pipeline by dust, oil stains, etc.; local blockage or accumulation, such as local blockage of a narrow passage in the valve due to accumulation of impurities; blockage caused by gas or liquid backflow, such as blockage of part of the condenser or evaporator caused by reverse flow of refrigerant; gradual blockage of limited flow, such as slow flow limitation of a filter or small valve due to accumulation of pollutants after long-term operation.

[0063] Please refer to Figure 3 In some exemplary embodiments, when the air conditioner is started in heating mode, the indoor fan is turned off at startup, and when the operating frequency of the compressor reaches a frequency threshold x, the compressor is controlled to operate until time t1 based on the frequency threshold, the compressor phase current I1 and the indoor coil temperature Tc1 at this time are recorded; then, the compressor is controlled to operate from time t1 to time t2, i.e., the compressor is controlled to operate 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 a and ΔTc<first temperature threshold b, secondary judgment is entered; if ΔI1≤first current threshold a and ΔTc≥first temperature threshold b, it indicates normal operation.

[0064] Secondary judgment: turn off the outdoor fan and run, and start detecting the outdoor coil temperature change trend, the compressor phase current I3 and the outdoor coil temperature Te1 at time t3; then, the compressor is controlled to operate for a preset second time period, i.e., the compressor is controlled to operate from time t3 to time t4, and the compressor phase current I4 and the outdoor coil temperature Te2 at time t4 are recorded; then, the second phase current change ΔI2=(I4-I3) / I3 and the difference ΔTe=Te2-Te1 of the outdoor coil temperature are calculated, and if ΔTe<second temperature threshold c and ΔI2>first phase current change ΔI1, it is judged that the air conditioner 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 decrease slowly, and the compressor phase current will continuously rise, and the phase current of the system will not decrease even if the outdoor fan is turned off in time, so it can be determined whether the stop valve is blocked.

[0065] The present embodiment can detect the flow performance of the stop valve by adjusting parameters and preset thresholds for different working environments and load conditions. 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 the actual working conditions, ensuring the accuracy and timeliness of the detection.

[0066] In some embodiments, after determining that the abnormal blockage exists in the shutoff valve, the method can further include: performing blockage protection on the shutoff valve.

[0067] As an exemplary example, to prevent the compressor from being damaged due to overload, the system can automatically shut down the compressor or reduce its operating frequency. At the same time, components related to the shutoff valve, such as the outdoor fan, can be shut down to reduce the pressure and load of the system. The blockage can also be cleared by automatic restart or reset.

[0068] In some embodiments, after determining that the abnormal blockage exists in the shutoff valve, the method can further include: sending an abnormal alarm to a mobile device in communication with the air conditioning system.

[0069] As an exemplary example, the alarm information can be sent to the user's mobile device, such as a smartphone or tablet, through Wi-Fi, Bluetooth, or a mobile network. The alarm information can include specific error codes, problem descriptions, such as shutoff valve blockage, and recommended solutions. In addition to the notification of the mobile device, the system can also remind the user through email, SMS, or the notification function of the smart home device. After receiving the alarm, the user can view the detailed information and perform preliminary checks through the mobile application. In addition, the alarm system can also provide preventive maintenance recommendations based on past operation data, reminding the user to perform regular checks or replace components that may soon fail.

[0070] Through the blockage protection and / or alarm mechanism, the air conditioning system not only effectively protects itself and reduces the risk of damage when a fault occurs, but also promptly notifies the user to take action, minimizing the impact of the fault on normal use.

[0071] In addition, the present application also provides a detection device for an air conditioning shutoff valve, which comprises:

[0072] The first detection module is configured to perform first detection on the flow-through performance of the shutoff 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 in response to a heating instruction, to obtain a preliminary detection result.

[0073] The second detection module is configured to perform second detection on the flow-through performance of the shutoff valve according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system in response to the preliminary detection result indicating that the flow-through performance is abnormal, to obtain a target detection result.

[0074] Please refer to Figure 4 , Figure 4 is an exemplary structural block diagram of an electronic device for the detection method of the air conditioning shutoff valve of the present application. As shown inFigure 4 It is shown that the electronic device 400 of the present application can include a processor 401 and a memory 402, wherein the processor 401 and the memory 402 communicate through a bus. The memory 402 stores program instructions for detecting the air conditioner stop valve, which, when executed by the processor 401, causes the processor to perform the above-mentioned related method steps to implement one of the above-mentioned air conditioner stop valve detection methods.

[0075] Please refer to Figure 5 , Figure 5 is an exemplary structural block diagram of a computer readable storage medium of the air conditioner stop valve detection method of the present application. As Figure 5 It is shown that the computer readable storage medium 500 stores a computer program 501, which, when executed by a processor on a computer, causes the computer to perform the above-mentioned related method steps to implement one of the above-mentioned air conditioner stop valve detection methods.

[0076] The above scheme, in response to the heating instruction 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, the first detection of the flow performance of the stop valve of the air conditioning system is carried out, and the preliminary detection result is obtained; in response to the preliminary detection result that the flow performance is abnormal, according to the phase current of the compressor and the temperature of the outdoor coil of the air conditioning system, the flow performance of the stop valve is detected for the second time, and the target detection result is obtained. Through the air conditioning system in the heating mode, combined with the phase current of the compressor and the temperature of the indoor coil for detection, the flow performance of the stop valve is evaluated; if the detection result shows that the flow is abnormal, combined with the phase current of the compressor and the temperature of the outdoor coil for secondary detection, the detection result of whether the stop valve is blocked is obtained, which can improve the fault judgment accuracy of the air conditioning system in the heating mode, and reduce the misjudgment risk caused by environmental changes and system aging.

[0077] In several embodiments provided in the present application, it should be understood that the disclosed method, electronic device and storage medium can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed mutual ones can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0078] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e. may be located in one place, or may be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment scheme.

[0079] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can be physically present alone, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0080] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the air conditioner stop valve detection method described in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0081] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A method of detecting a stop valve of an air conditioner, characterized by, The detection method of the air conditioner stop valve comprises: The air conditioning system responds to the heating instruction, and controls the compressor to operate for a preset first time period in response to the operating frequency of the compressor reaching a preset frequency threshold, to obtain a first phase current change amount of the compressor corresponding to the first time period and a temperature difference of an indoor coil of the air conditioning system; According to the first phase current change amount and the temperature difference of the indoor coil, the stop valve of the air conditioning system is preliminarily detected to obtain a preliminary detection result; In response to the preliminary detection result being abnormal in flow performance, the outdoor fan of the air conditioning system is turned off, and the compressor is controlled to operate for a preset second time period, to obtain a second phase current change amount of the compressor corresponding to the second time period and a temperature difference of an outdoor coil; wherein the flow performance is the flow efficiency of refrigerant, air or other medium passing through the stop valve. According to the first phase current change amount, the second phase current change amount and the temperature difference of the outdoor coil, the stop valve is detected to obtain a target detection result, wherein the temperature difference of the outdoor coil is used to represent the temperature difference between the inlet and outlet of the outdoor coil.

2. The method of claim 1, wherein the method further comprises: The preliminary detection of the stop valve of the air conditioning system according to the first phase current change amount and the temperature difference of the indoor coil to obtain the preliminary detection result comprises: In response to the first phase current change amount being greater than a preset first current threshold and the temperature difference of the indoor coil being less than a preset first temperature threshold, it is determined that the preliminary detection result is abnormal.

3. The method of claim 1, wherein the method further comprises: The detection of the stop valve according to the first phase current change amount, the second phase current change amount and the temperature difference of the outdoor coil to obtain the target detection result comprises: In response to the second phase current change amount being greater than the first phase current change amount 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.

4. The method of claim 3, wherein the method further comprises: The determination of the target detection result that the stop valve is abnormally blocked in response to the second phase current change amount being greater than the first phase current change amount and the temperature difference of the outdoor coil being less than a preset second temperature threshold, and then comprises: Blocking protection is performed on the stop valve.

5. The method of claim 3, wherein the method further comprises: The determination of the target detection result that the stop valve is abnormally blocked in response to the second phase current change amount being greater than the first phase current change amount and the temperature difference of the outdoor coil being less than a preset second temperature threshold, and then comprises: An abnormal alarm is sent to a mobile device in communication with the air conditioning system.

6. An air conditioner stop valve detecting device characterized by comprising: The detection device of the air conditioner stop valve comprises: The first detection module is configured to, in response to a heating instruction, control the compressor to operate for a preset first time period in response to an operating frequency of the compressor reaching a preset frequency threshold, so as to obtain a first phase current change amount of the compressor and a temperature difference of an indoor coil of the air conditioning system corresponding to the first time period; and perform preliminary detection on a stop valve of the air conditioning system according to the first phase current change amount and the temperature difference of the indoor coil, to obtain a preliminary detection result. The second detection module is configured to, in response to the preliminary detection result being that a flow performance is abnormal, close an outdoor fan of the air conditioning system, and control the compressor to operate for a preset second time period, so as to obtain a second phase current change amount of the compressor and a temperature difference of an outdoor coil corresponding to the second time period; and perform detection on the stop valve according to the first phase current change amount, the second phase current change amount and the temperature difference of the outdoor coil, to obtain a target detection result, wherein the flow performance is a flow efficiency of refrigerant, air or other medium passing through the stop valve, and the temperature difference of the outdoor coil is used to represent a temperature difference between an inlet and an outlet of the outdoor coil.

7. An electronic device, comprising: The electronic device comprises: a memory configured to store executable program code; a processor configured to call and run the executable program code from the memory, so that the electronic device performs the detection method of the air conditioning stop valve according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, when the computer program is executed by the processor, the detection method of the air conditioning stop valve according to any one of claims 1 to 5 is realized.

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