Air conditioner detection device and detection method

Abstract

The invention discloses an air conditioner detection device and a detection method, relates to the technical field of air conditioner detection, and aims to solve the problem of inaccurate detection of a gap between a refrigerant radiator and a power module in the prior art. The air conditioner detection device comprises a control module, a detection module and a judgment module, wherein the control module is used for controlling an air conditioner to start and controlling the air conditioner not to introduce a refrigerant into a refrigerant radiator; the detection module is used for detecting the temperature of the power module when the air conditioner is started and no refrigerant is introduced into the refrigerant radiator, and the temperature is recorded as a first temperature; the control module controls the air conditioner to continue to operate and controls the air conditioner to introduce a refrigerant into the refrigerant radiator; the detection module is used for detecting the temperature of the power module when the air conditioner continues to operate and a refrigerant is introduced into the refrigerant radiator, and the temperature is recorded as a second temperature; the judgment module is used for judging whether assembly of the refrigerant radiator and the power module meets the requirement or not according to changes of the first temperature and the second temperature. The method is used for detecting whether assembly of the air conditioner meets requirements or not.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner detection, and in particular to an air conditioner detection device and a detection method. Background Art

[0002] A power module is usually installed in the outdoor unit of the air conditioner to convert and adjust the voltage, current and frequency of the power supply through the power module. The power module will generate heat during operation, so the power module is usually cooled. The commonly used cooling methods are air cooling and refrigerant cooling. In the case of cooling the power module by refrigerant cooling, the refrigerant radiator and the power module are usually fixed together to dissipate the heat of the power module through the refrigerant radiator. However, after the refrigerant radiator and the power module are assembled, the gap between the refrigerant radiator and the power module needs to be detected to avoid flash gaps between the two and affect the cooling effect of the refrigerant radiator on the power module.

[0003] In the related art, the gap between the refrigerant radiator and the power module is detected, usually by manually inserting a ruler with a preset thickness into the gap between the refrigerant radiator and the power module, so as to judge whether the assembly of the refrigerant radiator and the power module meets the requirements based on whether the ruler can be inserted into the gap between the refrigerant radiator and the power module.

[0004] This testing method may cause errors in the test results due to the different operations of different testers and the different forces used when using the feeler gauge, resulting in inaccurate test results. Summary of the invention

[0005] The embodiments of the present invention provide an air conditioner detection device and a detection method, which solve the problem of inaccurate detection of the gap between the refrigerant radiator and the power module in the prior art.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] According to the first aspect of the present application, an air conditioner detection device is provided, the air conditioner includes a housing, a bracket, a power module and a refrigerant radiator, a mounting cavity is formed in the housing; the bracket is arranged in the mounting cavity and fixed on the housing; the power module is connected to the bracket; the refrigerant radiator is located on one side of the power module and fixed on the power module by a fastener. The detection device includes a control module, a detection module and a determination module, the control module is used to control the air conditioner to start, and control the air conditioner not to pass refrigerant into the refrigerant radiator; the detection module is used to detect the temperature of the power module when the air conditioner is started and the refrigerant is not passed into the refrigerant radiator, and record it as a first temperature; the control module controls the air conditioner to continue to run, and controls the air conditioner to pass refrigerant into the refrigerant radiator; the detection module is used to detect the temperature of the power module when the air conditioner continues to run and passes refrigerant into the refrigerant radiator, and record it as a second temperature; the determination module is used to judge whether the assembly of the refrigerant radiator and the power module meets the requirements according to the changes of the first temperature and the second temperature.

[0008] The air conditioner detection device provided in the present application detects the temperature of the power module when the air conditioner is started and no refrigerant is introduced into the refrigerant radiator, that is, the first temperature, and detects the temperature of the power module when the refrigerant is introduced into the refrigerant radiator when the air conditioner continues to run, that is, the second temperature; and determines whether the assembly of the refrigerant radiator and the power module meets the requirements based on the changes in the first temperature and the second temperature. That is, if the second temperature changes significantly with respect to the first temperature, it means that the refrigerant flowing through the refrigerant radiator and the power module can effectively dissipate heat, indicating that the assembly of the refrigerant radiator and the power module meets the requirements; and if the second temperature does not change significantly with respect to the first temperature, it means that the refrigerant flowing through the refrigerant radiator and the power module do not effectively dissipate heat, indicating that the assembly of the refrigerant radiator and the power module does not meet the requirements.

[0009] In this way, there is no need for manual inspection of the gap between the refrigerant radiator and the power module, thereby avoiding inspection errors caused by different inspection personnel, thereby improving the accuracy of the inspection results.

[0010] In some embodiments, the air conditioner further comprises a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve and a solenoid valve, wherein the first valve port of the four-way valve is connected to the outlet of the compressor; the third valve port of the four-way valve is connected to the inlet of the compressor; the second valve port of the four-way valve is connected to the outdoor heat exchanger; the indoor heat exchanger is connected to the fourth valve port of the four-way valve; the first electronic expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger; the inlet of the second electronic expansion valve is connected between the outdoor heat exchanger and the first electronic expansion valve, and the outlet of the second electronic expansion valve is connected to the inlet of the refrigerant radiator; the inlet of the solenoid valve is connected between the outlet of the compressor and the first valve port, and the outlet of the solenoid valve is connected between the second electronic expansion valve and the refrigerant radiator; the control module is specifically used to: close the solenoid valve and the second electronic expansion valve to control the air conditioner not to pass refrigerant into the refrigerant radiator; in this way, the air conditioner can be tested when the machine is tested before leaving the factory, so that there is no need to separately test the assembly of the refrigerant radiator and the power module to improve the efficiency of the test.

[0011] In some embodiments, the control module is also specifically used to: control the second electronic expansion valve to close and the solenoid valve to open; control the first valve port to connect with the second valve port, and connect the third valve port to the fourth valve port to control the air conditioner to pass refrigerant into the refrigerant radiator.

[0012] In some embodiments, the determination module is specifically used to: determine whether the difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference; if so, determine that the assembly of the refrigerant radiator and the power module meets the requirements; this method can determine the heat exchange effect between the refrigerant and the power module, thereby improving the detection accuracy.

[0013] In some embodiments, the control module is also specifically used to: control the solenoid valve to close and the second electronic expansion valve to open; control the first valve port to be connected to the second valve port, and the third valve port to be connected to the fourth valve port, so that the outdoor heat exchanger acts as a condenser, and the indoor heat exchanger acts as an evaporator, so as to control the air conditioner to pass refrigerant to the refrigerant radiator; or, control the first valve port to be connected to the fourth valve port, and the second valve port to be connected to the third valve port, so that the indoor heat exchanger acts as a condenser, and the outdoor heat exchanger acts as an evaporator, so as to control the air conditioner to pass refrigerant to the refrigerant radiator.

[0014] In some embodiments, the determination module is specifically used to: determine whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference; if so, determine that the assembly of the refrigerant radiator and the power module meets the requirements; this method can determine the heat exchange effect between the refrigerant and the power module, thereby improving the detection accuracy.

[0015] According to the second aspect of the present application, a method for detecting an air conditioner is provided. The air conditioner includes a housing, a bracket, a power module and a refrigerant radiator. An installation cavity is formed in the housing; the bracket is arranged in the installation cavity and fixed to the housing; the power module is connected to the bracket; the refrigerant radiator is located on one side of the power module and fixed to the power module by a fastener. The detection method includes: starting the air conditioner, but not introducing refrigerant into the refrigerant radiator, detecting the temperature of the power module at this time, and recording it as a first temperature; continuing to operate the air conditioner, and introducing refrigerant into the refrigerant radiator, detecting the temperature of the power module at this time, and recording it as a second temperature; judging whether the assembly of the refrigerant radiator and the power module meets the requirements according to the changes in the first temperature and the second temperature.

[0016] In some embodiments, the air conditioner also includes a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a first electronic expansion valve, a second electronic expansion valve and a solenoid valve, the first valve port of the four-way valve is connected to the outlet of the compressor; the third valve port of the four-way valve is connected to the inlet of the compressor; the second valve port of the four-way valve is connected to the outdoor heat exchanger; the indoor heat exchanger is connected to the fourth valve port of the four-way valve; the first electronic expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger; the inlet of the second electronic expansion valve is connected between the outdoor heat exchanger and the first electronic expansion valve, and the outlet of the second electronic expansion valve is connected to the inlet of the refrigerant radiator; the inlet of the solenoid valve is connected between the outlet of the compressor and the first valve port, and the outlet of the solenoid valve is connected between the second electronic expansion valve and the refrigerant radiator; not introducing refrigerant into the refrigerant radiator includes: closing the solenoid valve and closing the second electronic expansion valve.

[0017] In some embodiments, introducing refrigerant into the refrigerant radiator includes: closing the second electronic expansion valve and opening the solenoid valve; connecting the first valve port with the second valve port, and connecting the third valve port with the fourth valve port.

[0018] In some embodiments, introducing refrigerant into the refrigerant radiator includes: closing the solenoid valve and opening the second electronic expansion valve; connecting the first valve port with the second valve port, and connecting the third valve port with the fourth valve port, so that the outdoor heat exchanger serves as a condenser and the indoor heat exchanger serves as an evaporator; or, connecting the first valve port with the fourth valve port, and connecting the second valve port with the third valve port, so that the indoor heat exchanger serves as a condenser and the outdoor heat exchanger serves as an evaporator.

[0019] It should be noted that the technical effects brought about by the implementation method of the second aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the exploded structure of the refrigerant radiator and the power module in the embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the connection relationship between the refrigerant radiator and the refrigerant pipeline in the embodiment of the present application;

[0022] Figure 3 This is one of the flow charts of the air conditioner detection method in the embodiment of the present application;

[0023] Figure 4 This is a second flow chart of the air conditioner detection method in the embodiment of the present application;

[0024] Figure 5 This is one of the schematic diagrams of the refrigerant pipeline of the air conditioner in the embodiment of the present application;

[0025] Figure 6 This is the second schematic diagram of the refrigerant pipeline of the air conditioner in the embodiment of the present application;

[0026] Figure 7 for Figure 6 One of the enlarged schematic diagrams of the connection relationship at A in the middle;

[0027] Figure 8 This is a third flow chart of the air conditioner detection method in the embodiment of the present application;

[0028] Fig. 9 This is a fourth flow chart of the air conditioner detection method in the embodiment of the present application;

[0029] Fig.10 for Figure 6 The second enlarged schematic diagram of the connection relationship at A in the middle;

[0030] Fig.11 This is a fifth flow chart of the air conditioner detection method in the embodiment of the present application;

[0031] Fig.12 Schematic diagram of the connection of various modules of the air conditioner detection device in the embodiment of the present application.

[0032] Reference numerals:

[0033] 1- bracket; 11- limiting hole;

[0034] 2-Refrigerant radiator;

[0035] 3- Power module;

[0036] 4- Fasteners;

[0037] 5-Refrigerant pipeline;

[0038] 6-Compressor;

[0039] 7-four-way valve; 71-first valve port; 72-second valve port; 73-third valve port; 74-fourth valve port;

[0040] 8-Outdoor heat exchanger;

[0041] 9- first electronic expansion valve;

[0042] 10- second electronic expansion valve;

[0043] 20-Indoor heat exchanger;

[0044] 30- Solenoid valve;

[0045] 40- control module;

[0046] 50- detection module;

[0047] 60-determination module. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0049] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0052] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0053] As a common household appliance, air conditioners are widely used in daily life. Air conditioners include an outdoor unit and an indoor unit. The indoor air temperature is regulated by the cooperation between the outdoor unit and the indoor unit.

[0054] Specifically, when the air conditioner is cooling, the compressor in the outdoor unit of the air conditioner compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant passes through the outdoor heat exchanger of the air conditioner outdoor unit to dissipate heat and become a normal-temperature and high-pressure liquid refrigerant. The normal-temperature and high-pressure liquid refrigerant then enters the indoor unit of the air conditioner, and the normal-temperature and high-pressure liquid refrigerant passes through the indoor heat exchanger of the indoor unit of the air conditioner to absorb a large amount of heat, and the air temperature in the inner cavity of the indoor unit of the air conditioner will decrease. The fan of the indoor unit of the air conditioner then outputs the low-temperature air, thereby cooling the indoor air.

[0055] When the air conditioner is heating, the compressor in the outdoor unit of the air conditioner compresses the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the indoor heat exchanger of the air conditioner indoor unit and condenses and liquefies into a normal-temperature and high-pressure liquid refrigerant, releasing a large amount of heat. The air temperature in the inner cavity of the air conditioner indoor unit will rise, and the fan of the air conditioner indoor unit will then output the high-temperature air, thereby raising the temperature of the indoor air. The normal-temperature and high-pressure liquid refrigerant is decompressed by the throttling device and enters the outdoor heat exchanger of the outdoor unit of the air conditioner. The normal-temperature and high-pressure liquid refrigerant evaporates and absorbs heat to become a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant enters the compressor in the outdoor unit of the air conditioner to start the next cycle.

[0056] A power module is usually installed in the outdoor unit of the air conditioner. The power module is used to convert and adjust the voltage, current and frequency of the power supply during the operation of the air conditioner to adjust the power output of the air conditioner. Since the power module will generate heat during operation, a refrigerant radiator is usually installed on the power module to dissipate the heat of the power module through the refrigerant radiator to avoid the power module temperature being too high and affecting the reliability of the power module.

[0057] The refrigerant radiator and the power module are usually assembled together to ensure the cooling effect of the refrigerant radiator on the power module. Figure 1 As shown, the air conditioner includes a bracket 1 , a refrigerant radiator 2 and a power module 3 .

[0058] The bracket 1 is fixed in the casing of the air conditioner outdoor unit, and the power module 3 is connected to the bracket 1. Specifically, a limiting hole 11 is provided on the bracket 1, and part of the power module 3 is located in the limiting hole 11. The power module 3 is limited by the limiting hole 11, and then the power module 3 is fixed to the bracket 1 by screws, bolts, etc.

[0059] The refrigerant radiator 2 is located on one side of the power module 3 and is fixed to the power module 3 by a fastener 4. Specifically, the refrigerant radiator 2 can be located on one side of the power module 3 on the axis of the limiting hole 11, so that the refrigerant radiator 2 can be attached to the bottom plate of the power module 3, and then the fastener 4 passes through the power module 3 and the refrigerant radiator 2 to fasten the power module 3 and the refrigerant radiator 2 together.

[0060] Among them, the fastener 4 can be a bolt, a bolt and a nut, a screw, etc.

[0061] The cooling of the power module 3 by the refrigerant radiator 2 is achieved by heat exchange between the refrigerant and the power module 3 during the process of the refrigerant flowing in the refrigerant radiator 2. Specifically, Figure 2 As shown, the air conditioner includes a refrigerant pipe 5 , which passes through the refrigerant radiator 2 , and the refrigerant flows in the refrigerant pipe 5 to achieve circulation in the refrigerant radiator 2 .

[0062] After the power module 3 and the refrigerant radiator 2 are fixed together, the gap between the two needs to be smaller than a preset spacing to ensure that the refrigerant radiator 2 effectively dissipates heat for the power module 3. Usually, the preset spacing is less than or equal to 0.1 mm.

[0063] When the gap between the power module 3 and the refrigerant radiator 2 is larger than the above-mentioned preset spacing, the amount of heat exchange between the refrigerant and the power module 3 is very small or even non-existent during the flow of the refrigerant in the refrigerant radiator 2. Therefore, the refrigerant radiator 2 cannot effectively dissipate heat for the power module 3.

[0064] When the gap between the power module 3 and the refrigerant radiator 2 is less than or equal to the above-mentioned preset distance, the refrigerant flowing through the refrigerant radiator 2 can effectively exchange heat with the power module 3, so that the refrigerant radiator 2 can play a role in cooling the power module 3.

[0065] Therefore, after the power module 3 and the refrigerant radiator 2 are assembled, the gap between them needs to be tested. The air conditioner can only be shipped if the gap between the power module 3 and the refrigerant radiator 2 meets the requirements.

[0066] In the related art, the gap between the power module 3 and the refrigerant radiator 2 is usually detected manually. Specifically, a ruler with the same thickness as the preset spacing (0.1 mm) is manually inserted into the gap between the refrigerant radiator 2 and the power module 3, so as to judge whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to whether the ruler can be inserted into the gap between the refrigerant radiator 2 and the power module 3.

[0067] This detection method may cause errors in the detection results due to the different operations of different detection personnel and the different forces used when using the feeler gauge, resulting in inaccurate detection results.

[0068] Based on this, an embodiment of the present application provides an air conditioner detection method, which is used to detect the assembly status of the refrigerant radiator 2 and the power module 3 of the air conditioner when the air conditioner is assembled and tested before leaving the factory.

[0069] like Figure 3 As shown, the air conditioner detection method includes:

[0070] S1: Start the air conditioner, but do not introduce refrigerant into the refrigerant radiator 2, detect the temperature of the power module 3 at this time, and record it as the first temperature.

[0071] It should be noted that after the air conditioner is started, the power module 3 will work, and when no refrigerant is introduced into the power module 3, the temperature of the power module 3 will not be affected by the refrigerant radiator 2. The first temperature detected at this time is the temperature when the power module 3 is running without heat exchange with the refrigerant in the refrigerant radiator 2.

[0072] Not introducing refrigerant into the refrigerant radiator 2 can be achieved by not allowing the refrigerant in the air conditioner to flow after the air conditioner is started, for example, stopping the operation of the compressor. Not introducing refrigerant into the refrigerant radiator 2 can also be achieved by blocking the inlet or inlet pipe of the refrigerant radiator 2.

[0073] S2: Continue to operate the air conditioner and introduce refrigerant into the refrigerant radiator 2, detect the temperature of the power module 3 at this time, and record it as the second temperature.

[0074] It should be noted that after the first temperature detection is completed, the air conditioner continues to run, so that the power module 3 can continue to work. Then, the refrigerant is introduced into the refrigerant radiator 2 and the refrigerant is circulated in the refrigerant radiator 2. At this time, the temperature of the power module 3 will be affected by the refrigerant radiator 2. The second temperature detected is the temperature when the power module 3 is operating under the condition of heat exchange with the refrigerant in the refrigerant radiator 2.

[0075] If the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements, the second temperature will have a significant change relative to the first temperature; if the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements, the second temperature will not have a significant change compared to the first temperature.

[0076] The refrigerant can be introduced into the refrigerant radiator 2 by opening the refrigerant pipe 5 of the air conditioner and the refrigerant pipe 5 of the refrigerant radiator 2; or a pipe can be connected to the inlet of the refrigerant radiator 2, and then the refrigerant is added into the refrigerant radiator 2 through the pipe, and the refrigerant of the air conditioner can be used as the refrigerant. Here, the refrigerant is introduced into the refrigerant radiator 2 using the refrigerant in the air conditioner as an example for explanation.

[0077] S3: judging whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature.

[0078] It should be noted that if the second temperature has a significant change compared to the first temperature, it means that the refrigerant in the refrigerant radiator 2 and the power module 3 can effectively exchange heat, indicating that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. If the second temperature has no significant change compared to the first temperature, it means that the refrigerant in the refrigerant radiator 2 and the power module 3 do not have effective heat exchange, indicating that the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements.

[0079] Among them, since when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements, the temperature of the power module 3 will change quickly after the refrigerant is introduced into the refrigerant radiator 2, the second temperature can be detected as long as the refrigerant flows through the refrigerant radiator 2. The second temperature can also be detected after the refrigerant flows in the refrigerant radiator 2 for a preset time, wherein the preset time can be 1 minute, 2 minutes, 3 minutes, etc.

[0080] Furthermore, the detection method can complete the detection in a very short time, so the temperature change of the power module 3 during operation is within the temperature range that the power module 3 can withstand.

[0081] Through the above detection method, there is no need to manually detect the gap between the refrigerant radiator 2 and the power module 3, so that detection errors caused by different detection personnel can be avoided, thereby improving the accuracy of the detection result.

[0082] On this basis, in order to improve the qualified rate of the assembly of the refrigerant radiator 2 and the power module 3, as Figure 4 As shown, after judging whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature, the method further includes:

[0083] S4: If not, use a torque wrench to tighten the fastener 4 according to a preset torque.

[0084] That is to say, if yes, the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements and the detection ends; if no, the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements and the refrigerant radiator 2 and the power module 3 need to be tightened again.

[0085] The preset torque may be a torque within a range of greater than or equal to 3 N.m and less than or equal to 5 N.m.

[0086] After the fastener 4 is tightened by a torque wrench, the refrigerant radiator 2 and the power module 3 can be connected more tightly, thereby reducing the gap between the refrigerant radiator 2 and the power module 3.

[0087] After the fastener 4 is tightened by the torque wrench, the first temperature and the second temperature of the power module 3 can be detected again, and it can be determined whether the second temperature has a significant change relative to the first temperature. That is, the above steps S1-S3 are repeated again to determine whether the gap between the refrigerant radiator 2 and the power module 3 after tightening meets the requirements.

[0088] It should be noted that the above steps S1 to S4 can be repeated continuously until the gap between the refrigerant radiator 2 and the power module 3 meets the requirements.

[0089] By tightening the fastener 4 multiple times and checking whether the gap between the refrigerant radiator 2 and the power module 3 meets the requirements multiple times, it can be ensured that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements before leaving the factory, thereby improving the qualification rate of the air conditioner.

[0090] The air conditioner detection method can be applied to split air conditioners, integrated air conditioners, wall-mounted air conditioners, vertical air conditioners, etc.

[0091] In some embodiments, the air conditioner may have one refrigerant circuit through which the refrigerant flows through the refrigerant radiator 2. Figure 5 As shown, the air conditioner includes a compressor 6 , a four-way valve 7 , an outdoor heat exchanger 8 , a first electronic expansion valve 9 , a second electronic expansion valve 10 and an indoor heat exchanger 20 .

[0092] The first valve port 71 of the four-way valve 7 is connected to the outlet of the compressor 6; the third valve port 73 of the four-way valve 7 is connected to the inlet of the compressor 6; the second valve port 72 of the four-way valve 7 is connected to the outdoor heat exchanger 8; the indoor heat exchanger 20 is connected to the fourth valve port 74 of the four-way valve 7; the first electronic expansion valve 9 is connected between the indoor heat exchanger 20 and the outdoor heat exchanger 8; the inlet of the second electronic expansion valve 10 is connected between the outdoor heat exchanger 8 and the first electronic expansion valve 9, and the outlet of the second electronic expansion valve 10 is connected to the inlet of the refrigerant radiator 2.

[0093] In this way, a refrigerant circulation loop can be formed between the compressor 6 , the four-way valve 7 , the outdoor heat exchanger 8 , the first electronic expansion valve 9 , the indoor heat exchanger 20 , the four-way valve 7 and the compressor 6 .

[0094] At the same time, a first refrigerant circuit of the refrigerant radiator 2 can also be formed between the compressor 6, the four-way valve 7, the outdoor heat exchanger 8, the second electronic expansion valve 10, the refrigerant radiator 2, the indoor heat exchanger 20, the four-way valve 7 and the compressor 6.

[0095] After the air conditioner is started, the refrigerant can flow in the refrigerant circulation loop. At this time, the second electronic expansion valve 10 can be closed to prevent the refrigerant from entering the refrigerant radiator 2 ; the second electronic expansion valve 10 can be opened to allow the refrigerant to enter the refrigerant radiator 2 .

[0096] In other embodiments, the refrigerant in the air conditioner may have multiple refrigerant circuits flowing through the refrigerant radiator 2. Figure 6 As shown, the air conditioner further includes a solenoid valve 30 , the inlet of the solenoid valve 30 is connected between the outlet of the compressor 6 and the first valve port 71 of the four-way valve 7 , and the outlet of the solenoid valve 30 is connected between the second electronic expansion valve 10 and the refrigerant radiator 2 .

[0097] In this way, the air conditioner not only has a first refrigerant circuit of the refrigerant radiator 2, but also has a second refrigerant circuit of the refrigerant radiator 2 formed between the compressor 6, the solenoid valve 30, the refrigerant radiator 2, the indoor heat exchanger 20, the four-way valve 7 and the compressor 6.

[0098] Here, the first refrigerant circuit and the second refrigerant circuit formed with the refrigerant radiator 2 in the air conditioner are taken as an example for description.

[0099] Specifically, the refrigerant is not introduced into the refrigerant radiator 2 by closing the solenoid valve 30 and the second electronic expansion valve 10. After closing the solenoid valve 30 and the second electronic expansion valve 10, the first refrigerant circuit and the second refrigerant circuit are both cut off, thereby preventing the refrigerant in the air conditioner from flowing into the refrigerant radiator 2.

[0100] On this basis, when the refrigerant is introduced into the refrigerant radiator 2 , at least one of the first refrigerant circuit and the second refrigerant circuit can be opened to allow the refrigerant to enter the refrigerant radiator 2 .

[0101] For example, Figure 7 As shown, the first valve port 71 of the four-way valve 7 is connected to the second valve port 72 , and the third valve port 73 is connected to the fourth valve port 74 .

[0102] At the same time, the second electronic expansion valve 10 is closed and the solenoid valve 30 is opened, so that the refrigerant in the air conditioner flows out from the compressor 6, and sequentially flows through the solenoid valve 30, the refrigerant radiator 2, the indoor heat exchanger 20, the fourth valve port 74 of the four-way valve 7, the third valve port 73 of the four-way valve 7, and finally flows back to the compressor 6. That is, the refrigerant in the air conditioner circulates in the second refrigerant circuit.

[0103] In this way, the refrigerant can flow through the refrigerant radiator 2 , so that the refrigerant flowing through the refrigerant radiator 2 can exchange heat with the power module 3 .

[0104] In addition, after the refrigerant in the air conditioner flows out from the compressor 6, it will also flow through the first valve port 71 of the four-way valve 7, the second valve port 72 of the four-way valve 7, the outdoor heat exchanger 8, the first electronic expansion valve 9, the indoor heat exchanger 20, the fourth valve port 74 of the four-way valve 7, the third valve port 73 of the four-way valve 7, and finally flow back to the compressor 6, that is, the refrigerant in the air conditioner circulates in the refrigerant circulation loop.

[0105] At this time, the refrigerant flowing in the refrigerant circulation loop will not enter the refrigerant radiator 2. Therefore, the outdoor heat exchanger 8 and the indoor heat exchanger 20 can both turn off the heat exchange function, or the outdoor heat exchanger 8 can be used as a condenser and the indoor heat exchanger 20 can be used as an evaporator.

[0106] On this basis, if Figure 8 As shown, judging whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature includes:

[0107] It is determined whether the difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference.

[0108] If yes, it is determined that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements.

[0109] At this time, since the refrigerant is high-temperature and high-pressure refrigerant after flowing out of the compressor 6, the high-temperature and high-pressure refrigerant directly flows through the solenoid valve 30 and enters the refrigerant radiator 2. At this time, the temperature of the refrigerant entering the refrigerant radiator 2 is higher than the temperature of the power module 3. Therefore, when the refrigerant radiator 2 and the power module 3 are assembled in accordance with the requirements, the temperature of the power module 3 will increase after the refrigerant and the power module 3 exchange heat.

[0110] That is to say, when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements, the second temperature will be greater than the first temperature. Therefore, if the difference between the second temperature and the first temperature is greater than or equal to the preset temperature difference, it means that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. If the difference between the second temperature and the first temperature is less than the preset temperature difference, it means that the heat exchange amount between the refrigerant in the refrigerant radiator 2 and the power module 3 is very small, and it can be determined that the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements.

[0111] Among them, the preset temperature difference can be set according to the heat dissipation and cooling of the power module 3 by the refrigerant radiator 2 when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. For example, the preset temperature difference can be set to 3°C, 4°C, 5°C, etc.

[0112] Exemplarily, when the first valve port 71 of the four-way valve 7 is connected to the second valve port 72, and the third valve port 73 is connected to the fourth valve port 74, the solenoid valve 30 can also be closed and the second electronic expansion valve 10 can be opened. At the same time, the outdoor heat exchanger 8 is used as a condenser and the indoor heat exchanger 20 is used as an evaporator.

[0113] In this way, the refrigerant in the air conditioner flows out from the compressor 6, and sequentially flows through the first valve port 71 of the four-way valve 7, the second valve port 72 of the four-way valve 7, the outdoor heat exchanger 8, the second electronic expansion valve 10, the refrigerant radiator 2, the indoor heat exchanger 20, the fourth valve port 74 of the four-way valve 7 and the third valve port 73 of the four-way valve 7, and finally flows back to the compressor 6. That is, the refrigerant in the air conditioner circulates in the first refrigerant circuit, and at this time the refrigerant can flow through the refrigerant radiator 2, so that the refrigerant flowing through the refrigerant radiator 2 and the power module 3 perform heat exchange.

[0114] Furthermore, while the refrigerant circulates in the first refrigerant circuit, the refrigerant flowing out of the outdoor heat exchanger 8 can also flow through the first electronic expansion valve 9 and then enter the indoor heat exchanger 20, that is, the refrigerant will also flow in the refrigerant circulation circuit.

[0115] At this time, the refrigerant needs to flow through the outdoor heat exchanger 8 before entering the refrigerant radiator 2. Therefore, the outdoor heat exchanger 8 can be used as a condenser to condense the high-temperature and high-pressure refrigerant flowing out of the compressor 6 into a refrigerant at normal temperature and high pressure, so as to facilitate heat exchange between the refrigerant and the power module 3. Correspondingly, the indoor heat exchanger 20 should be used as an evaporator.

[0116] In addition, the heat exchange functions of the outdoor heat exchanger 8 and the indoor heat exchanger 20 may be turned off, and the high-temperature and high-pressure refrigerant may be used to perform heat exchange with the power module 3 .

[0117] Here, an example is described in which the outdoor heat exchanger 8 is used as a condenser and the indoor heat exchanger 20 is used as an evaporator.

[0118] Then, if Fig. 9 As shown, judging whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature includes:

[0119] It is determined whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference.

[0120] If yes, it is determined that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements.

[0121] At this time, the refrigerant entering the refrigerant radiator 2 is a refrigerant at room temperature and high pressure, that is, the temperature of the refrigerant is lower than the temperature of the power module 3. Therefore, when the refrigerant radiator 2 and the power module 3 are assembled in accordance with the requirements, the temperature of the power module 3 will be reduced after the refrigerant and the power module 3 exchange heat.

[0122] That is to say, when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements, the second temperature will be lower than the first temperature. Therefore, if the difference between the first temperature and the second temperature is greater than or equal to the preset temperature difference, it means that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. If the difference between the first temperature and the second temperature is lower than the preset temperature difference, it means that the heat exchange amount between the refrigerant in the refrigerant radiator 2 and the power module 3 is very small, and it can be determined that the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements.

[0123] Among them, the preset temperature difference can be set according to the heat dissipation and cooling of the power module 3 by the refrigerant radiator 2 when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. For example, the preset temperature difference can be set to 3°C, 4°C, 5°C, etc.

[0124] For example, Fig.10 As shown, the first valve port 71 of the four-way valve 7 is connected to the fourth valve port 74 , and the second valve port 72 is connected to the third valve port 73 .

[0125] At this time, the second electronic expansion valve 10 can be opened, the solenoid valve 30 can be closed, and the indoor heat exchanger 20 can be used as a condenser, and the outdoor heat exchanger 8 can be used as an evaporator.

[0126] In this way, the refrigerant in the air conditioner flows out of the compressor 6, and flows through the first valve port 71 of the four-way valve 7, the fourth valve port 74 of the four-way valve 7, the indoor heat exchanger 20, the refrigerant radiator 2, the second electronic expansion valve 10, the outdoor heat exchanger 8, the second valve port 72 of the four-way valve 7, and the third valve port 73 of the four-way valve 7, and then flows back to the compressor 6. At this time, the refrigerant can flow through the refrigerant radiator 2, so that the refrigerant flowing through the refrigerant radiator 2 can exchange heat with the power module 3.

[0127] Furthermore, while the refrigerant circulates in the first refrigerant circuit, the refrigerant flowing out of the indoor heat exchanger 20 can also flow through the first electronic expansion valve 9 and then enter the outdoor heat exchanger 8 .

[0128] At this time, the refrigerant needs to flow through the indoor heat exchanger 20 before entering the refrigerant radiator 2. Therefore, the indoor heat exchanger 20 can be used as a condenser to condense the high-temperature and high-pressure refrigerant flowing out of the compressor 6 into a normal temperature and high-pressure refrigerant to facilitate heat exchange between the refrigerant and the power module 3. Correspondingly, the outdoor heat exchanger 8 should be used as an evaporator.

[0129] In addition, the heat exchange functions of the outdoor heat exchanger 8 and the indoor heat exchanger 20 may be turned off, and the high-temperature and high-pressure refrigerant may be used to perform heat exchange with the power module 3 .

[0130] Here, an example is given in which the indoor heat exchanger 20 is used as a condenser and the outdoor heat exchanger 8 is used as an evaporator.

[0131] Then, if Fig.11 As shown, judging whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature includes:

[0132] It is determined whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference.

[0133] If yes, it is determined that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements.

[0134] At this time, the refrigerant entering the refrigerant radiator 2 is a refrigerant at room temperature and high pressure, that is, the temperature of the refrigerant is lower than the temperature of the power module 3. Therefore, when the refrigerant radiator 2 and the power module 3 are assembled in accordance with the requirements, the second temperature will be lower than the first temperature.

[0135] If the difference between the first temperature and the second temperature is greater than or equal to the preset temperature difference, it means that the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. If the difference between the first temperature and the second temperature is less than the preset temperature difference, it means that the heat exchange amount between the refrigerant in the refrigerant radiator 2 and the power module 3 is very small, and it can be determined that the assembly of the refrigerant radiator 2 and the power module 3 does not meet the requirements.

[0136] Among them, the preset temperature difference can be set according to the heat dissipation and cooling of the power module 3 by the refrigerant radiator 2 when the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements. For example, the preset temperature difference can be set to 3°C, 4°C, 5°C, etc.

[0137] The embodiment of the present application also provides an air conditioner detection device, such as Fig.12 As shown, the detection device includes a control module 40 , a detection module 50 and a determination module 60 .

[0138] The control module 40 is used to control the start-up of the air conditioner and control the air conditioner to not supply refrigerant to the refrigerant radiator 2 .

[0139] The detection module 50 is used to detect the temperature of the power module 3 when the air conditioner is started and no refrigerant is introduced into the refrigerant radiator 2, and record it as the first temperature.

[0140] The control module 40 is also used to control the air conditioner to continue running after the detection module 50 detects the first temperature, and to control the air conditioner to introduce refrigerant into the refrigerant radiator 2 .

[0141] The detection module 50 is also used to detect the temperature of the power module 3 when the air conditioner continues to run and the refrigerant is introduced into the refrigerant radiator 2, and record it as the second temperature.

[0142] The determination module 60 is used to determine whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the changes of the first temperature and the second temperature.

[0143] It should be noted that the control module 40 is connected to the detection module 50 and the determination module 60. When the air conditioner to be detected is detected, the control module 40 first controls the first refrigerant circuit and the second refrigerant circuit of the air conditioner to be cut off, and controls the operation of the air conditioner, and then sends an instruction to the detection module 50 to detect the temperature of the power module 3 at this time. The detection module 50 detects the temperature of the power module 3 at this time, that is, the first temperature.

[0144] After the detection module 50 detects the first temperature, it transmits the detected first temperature information to the control module 40. After receiving the first temperature information, the control module 40 controls the air conditioner to continue to operate, and controls the first refrigerant circuit and / or the second refrigerant circuit of the air conditioner to open, so that the refrigerant flows in the refrigerant radiator 2, and then sends an instruction to the detection module 50 to detect the temperature of the power module 3 at this time, and the detection module 50 detects the temperature of the power module 3 at this time, that is, the second temperature.

[0145] After the detection module 50 detects the second temperature, it transmits the detected second temperature information to the control module 40. After receiving the second temperature information, the control module 40 transmits the received first temperature information and second temperature information to the determination module 60, and issues an instruction to the determination module 60, so that the determination module 60 determines whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements according to the first temperature information and the second temperature information.

[0146] The control module 40 controls the air conditioner not to supply refrigerant to the refrigerant radiator 2 by controlling the electromagnetic valve 30 and the second electronic expansion valve 10 to be closed. Specifically, the control module 40 can be connected to the electromagnetic valve 30 and the second electronic expansion valve 10 so that the control module 40 controls the electromagnetic valve 30 and the second electronic expansion valve 10 to be closed.

[0147] The control module 40 controls the air conditioner to pass the refrigerant into the refrigerant radiator 2 by controlling the switching between the first valve port 71, the second valve port 72, the third valve port 73 and the fourth valve port 74 of the four-way valve 7, and controlling the opening of the solenoid valve 30 and / or the second electronic expansion valve 10. Specifically, the control module 40 can be connected to the four-way valve 7, the solenoid valve 30 and the second electronic expansion valve 10.

[0148] Exemplarily, the control module 40 controls the first valve port 71 of the four-way valve 7 to be connected to the second valve port 72, the third valve port 73 to be connected to the fourth valve port 74, and controls the second electronic expansion valve 10 to be closed and the solenoid valve 30 to be opened. At this time, the refrigerant can flow through the compressor 6, the solenoid valve 30, the refrigerant radiator 2, the indoor heat exchanger 20 and the four-way valve 7 in sequence and then flow back to the compressor 6.

[0149] At this time, the determination module is specifically used to: determine whether the difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference; if so, determine that the assembly of the refrigerant radiator and the power module meets the requirements.

[0150] Exemplarily, the control module 40 controls the first valve port 71 of the four-way valve 7 to be connected to the second valve port 72, the third valve port 73 to be connected to the fourth valve port 74, and controls the second electronic expansion valve 10 to be opened, the solenoid valve 30 to be closed, and controls the outdoor heat exchanger to be used as a condenser and the indoor heat exchanger to be used as an evaporator. At this time, the refrigerant can flow through the compressor 6, the four-way valve 7, the outdoor heat exchanger 8, the second electronic expansion valve 10, the refrigerant radiator 2, the indoor heat exchanger 20 and the four-way valve 7 in sequence and then flow back to the compressor 6.

[0151] At this time, the determination module is specifically used to: determine whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference; if so, determine that the assembly of the refrigerant radiator and the power module meets the requirements.

[0152] Exemplarily, the control module 40 controls the first valve port 71 of the four-way valve 7 to be connected to the fourth valve port 74, the second valve port 72 to be connected to the third valve port 73, and controls the second electronic expansion valve 10 to be opened, the solenoid valve 30 to be closed, the indoor heat exchanger to be used as a condenser, and the outdoor heat exchanger to be used as an evaporator. At this time, the refrigerant can flow through the compressor 6, the four-way valve 7, the indoor heat exchanger 20, the refrigerant radiator 2, the second electronic expansion valve 10, the outdoor heat exchanger 8 and the four-way valve 7 in sequence and then flow back to the compressor 6.

[0153] At this time, the determination module is specifically used to: determine whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference; if so, determine that the assembly of the refrigerant radiator and the power module meets the requirements.

[0154] The first temperature and the second temperature of the power module 3 are detected by the detection module 50, and whether the assembly of the refrigerant radiator 2 and the power module 3 meets the requirements is determined by the determination module 60 according to the changes of the first temperature and the second temperature. It is unnecessary to manually detect the gap between the refrigerant radiator 2 and the power module 3, thereby avoiding detection errors caused by different detection personnel, thereby improving the accuracy of the detection result.

[0155] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0156] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0157] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air conditioner detection device, characterized in that: The air conditioner comprises: A housing having a mounting cavity formed therein; A bracket, disposed in the mounting cavity and fixed on the housing; A power module is connected to the bracket; A refrigerant radiator, the refrigerant radiator is located on one side of the power module and is fixed to the power module by a fastener; The detection device comprises: A control module, used for controlling the start-up of the air conditioner and controlling the air conditioner not to supply refrigerant to the refrigerant radiator; a detection module, used for detecting the temperature of the power module when the air conditioner is started and no refrigerant is introduced into the refrigerant radiator, and recording the temperature as a first temperature; The control module is used to control the air conditioner to continue to operate and control the air conditioner to pass refrigerant into the refrigerant radiator; The detection module is used to detect the temperature of the power module when the air conditioner continues to run and the refrigerant is introduced into the refrigerant radiator, and record it as the second temperature; A determination module is used to determine whether the assembly of the refrigerant radiator and the power module meets the requirements according to the changes of the first temperature and the second temperature.

2. The air conditioner detection device according to claim 1, characterized in that: The air conditioner also includes: compressor; a four-way valve, wherein a first valve port of the four-way valve is connected to an outlet of the compressor; and a third valve port of the four-way valve is connected to an inlet of the compressor; An outdoor heat exchanger, the second valve port of the four-way valve being in communication with the outdoor heat exchanger; an indoor heat exchanger, the indoor heat exchanger being connected to the fourth valve port of the four-way valve; a first electronic expansion valve, wherein the first electronic expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger; a second electronic expansion valve, wherein the inlet of the second electronic expansion valve is connected between the outdoor heat exchanger and the first electronic expansion valve, and the outlet of the second electronic expansion valve is connected to the inlet of the refrigerant radiator; a solenoid valve, wherein the inlet of the solenoid valve is connected between the outlet of the compressor and the first valve port, and the outlet of the solenoid valve is connected between the second electronic expansion valve and the refrigerant radiator; The control module is specifically used for: The solenoid valve is closed, and the second electronic expansion valve is closed to control the air conditioner so as not to supply refrigerant to the refrigerant radiator.

3. The air conditioner detection device according to claim 2, characterized in that: The control module is also specifically used for: Controlling the second electronic expansion valve to close and the solenoid valve to open; The first valve port is controlled to communicate with the second valve port, and the third valve port is controlled to communicate with the fourth valve port, so as to control the air conditioner to pass refrigerant into the refrigerant radiator.

4. The air conditioner detection device according to claim 3, characterized in that: The determination module is specifically used for: Determining whether the difference between the second temperature and the first temperature is greater than or equal to a preset temperature difference; If so, it is determined that the assembly of the refrigerant radiator and the power module meets the requirements.

5. The air conditioner detection device according to claim 2, characterized in that: The control module is also specifically used for: Controlling the solenoid valve to close and the second electronic expansion valve to open; Control the first valve port to communicate with the second valve port, and connect the third valve port with the fourth valve port, so that the outdoor heat exchanger acts as a condenser and the indoor heat exchanger acts as an evaporator, so as to control the air conditioner to pass refrigerant into the refrigerant radiator; Alternatively, the first valve port is controlled to be connected to the fourth valve port, and the second valve port is controlled to be connected to the third valve port, so that the indoor heat exchanger acts as a condenser, and the outdoor heat exchanger acts as an evaporator, so as to control the air conditioner to pass refrigerant into the refrigerant radiator.

6. The air conditioner detection device according to claim 5, characterized in that: The determination module is specifically used for: Determining whether the difference between the first temperature and the second temperature is greater than or equal to a preset temperature difference; If so, it is determined that the assembly of the refrigerant radiator and the power module meets the requirements.

7. An air conditioner detection method, characterized in that: The air conditioner comprises: A housing having a mounting cavity formed therein; A bracket, disposed in the mounting cavity and fixed on the housing; A power module is connected to the bracket; A refrigerant radiator, the refrigerant radiator is located on one side of the power module and is fixed to the power module by a fastener; The detection method comprises: Starting the air conditioner without supplying refrigerant to the refrigerant radiator, detecting the temperature of the power module at this time, and recording it as a first temperature; Continue to operate the air conditioner, and introduce refrigerant into the refrigerant radiator, detect the temperature of the power module at this time, and record it as the second temperature; Whether the assembly of the refrigerant radiator and the power module meets the requirements is judged according to the changes of the first temperature and the second temperature.

8. The air conditioner detection method according to claim 7, characterized in that: The air conditioner also includes: compressor; a four-way valve, wherein a first valve port of the four-way valve is connected to an outlet of the compressor; and a third valve port of the four-way valve is connected to an inlet of the compressor; An outdoor heat exchanger, the second valve port of the four-way valve being in communication with the outdoor heat exchanger; an indoor heat exchanger, the indoor heat exchanger being connected to the fourth valve port of the four-way valve; a first electronic expansion valve, wherein the first electronic expansion valve is connected between the indoor heat exchanger and the outdoor heat exchanger; a second electronic expansion valve, wherein the inlet of the second electronic expansion valve is connected between the outdoor heat exchanger and the first electronic expansion valve, and the outlet of the second electronic expansion valve is connected to the inlet of the refrigerant radiator; a solenoid valve, wherein the inlet of the solenoid valve is connected between the outlet of the compressor and the first valve port, and the outlet of the solenoid valve is connected between the second electronic expansion valve and the refrigerant radiator; The not introducing refrigerant into the refrigerant radiator comprises: The solenoid valve is closed, and the second electronic expansion valve is closed.

9. The air conditioner detection method according to claim 8, characterized in that: The introducing refrigerant into the refrigerant radiator comprises: closing the second electronic expansion valve and opening the solenoid valve; The first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port.

10. The air conditioner detection method according to claim 8, characterized in that: The introducing refrigerant into the refrigerant radiator comprises: closing the solenoid valve and opening the second electronic expansion valve; Connecting the first valve port to the second valve port, and connecting the third valve port to the fourth valve port, so that the outdoor heat exchanger serves as a condenser, and the indoor heat exchanger serves as an evaporator; Alternatively, the first valve port is connected to the fourth valve port, and the second valve port is connected to the third valve port, so that the indoor heat exchanger is a condenser, and the outdoor heat exchanger is an evaporator.

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