Heat pump module detection system and detection method

Abstract

The application discloses a heat pump module detection system, comprising a first gas circuit, a second gas circuit and a gas source gas circuit, the first gas circuit is provided with a first interface, the second gas circuit is provided with a second interface, and the gas source gas circuit is provided with a third interface; the first gas circuit comprises a first main circuit, a first branch circuit, a second branch circuit and a first control valve, the first main circuit is provided with the first interface, the first branch circuit is provided with a first pressure detection device and a flow detection device, the second branch circuit is provided with a first valve, and the first control valve is used for controlling the first main circuit to communicate with the first branch circuit or the second branch circuit; the second gas circuit comprises a first pressure relief valve and a second pressure detection device; the heat pump module detection system comprises a second pressure relief valve, and the second pressure relief valve is provided with a first connecting port which is configured to communicate with a fourth opening. In this way, the performance of the heat pump module can be detected. The application further discloses a detection method of the heat pump module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, and particularly relates to a heat pump module detection system and a detection method. BACKGROUND

[0002] The four-way reversing valve is used for switching of a refrigeration mode and a heating mode of an air conditioning system. In the related art, a detection system is used to detect internal leakage of the four-way reversing valve, maximum action pressure difference and minimum action pressure difference, and the performance of the four-way reversing valve is detected separately, and the test result can only reflect the performance of the four-way reversing valve. However, the performance of the four-way reversing valve cannot completely represent the performance of the heat pump module. In actual use, the four-way reversing valve is assembled with a gas-liquid separator and other modules, and therefore it is easy to ignore the faults caused by the modules other than the four-way reversing valve. SUMMARY

[0003] The present application aims to provide a heat pump module detection system and a detection method, which can detect the overall performance of the heat pump module.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] A heat pump module detection system, comprising a first gas circuit, a second gas circuit and a gas source gas circuit, the first gas circuit has a first interface, the first interface is configured to communicate with a first opening of a heat pump module, the second gas circuit has a second interface, the second interface is configured to communicate with a second opening of the heat pump module, the gas source gas circuit has a third interface, the third interface is configured to communicate with a third opening of the heat pump module, and the first opening, the second opening, the third opening and the fourth opening are in communication with each other.

[0006] The first gas circuit comprises a first main circuit, a first branch circuit, a second branch circuit and a first control valve, the first main circuit has the first interface, the first branch circuit is provided with a first pressure detection device and a flow detection device, the second branch circuit is provided with a first valve, the first valve is used to control the second branch circuit to communicate with the outside of the heat pump module, and the first control valve is used to control the first main circuit to communicate with the first branch circuit or the second branch circuit.

[0007] The second gas circuit comprises a first pressure relief valve and a second pressure detection device, the heat pump module detection system comprises a second pressure relief valve, and the second pressure relief valve has a first connecting port, which is configured to communicate with a fourth opening of the heat pump module.

[0008] The purpose of the present application is also achieved by the following technical solutions:

[0009] A detection method of a heat pump module, comprising the following steps:

[0010] Detecting internal leakage of the heat pump module;

[0011] When the internal leakage meets the requirement, the heat pump module is adjusted to be in the power-off state, the first pressure relief valve and the second pressure relief valve are closed, air with the first pressure value is introduced into the heat pump module through the air source air path, when the air pressure in the heat pump module reaches the first pressure value, the air source air path stops introducing air into the heat pump module, the first pressure relief valve is opened, and the second pressure detection device obtains a second detection value.

[0012] The heat pump module is adjusted to be in the power-on state, the first pressure relief valve and the second pressure relief valve are closed, air with the first pressure value is introduced into the heat pump module through the air source air path, when the air pressure in the heat pump module reaches the first pressure value, the air source air path stops introducing air into the heat pump module, the pressure switch detects the atmospheric pressure, the first pressure relief valve and the second pressure relief valve are opened, and a first difference value between the first detection value and the atmospheric pressure is obtained.

[0013] The heat pump module is adjusted to be in the power-off state, the first pressure relief valve and the second pressure relief valve are closed, air with the first pressure value is introduced into the heat pump module through the air source air path, when the air pressure in the heat pump module reaches the first pressure value, the air source air path stops introducing air into the heat pump module, the first pressure relief valve is opened, the second pressure detection device obtains a second detection value, and a second difference value between the second detection value and the atmospheric pressure is obtained.

[0014] The heat pump module detection system of the present application can detect the whole heat pump module, air is transported to the heat pump module through the air source air path, the first air path is provided with a flow detection device, the internal leakage of the first opening of the heat pump module is detected through the flow detection device, and then the internal leakage condition is judged; the second air path is provided with a second pressure detection device, the pressure value of the second opening of the heat pump module is collected through the second pressure detection device, the maximum action pressure difference and the minimum action pressure difference are obtained according to the pressure value of the second opening, and the whole performance of the heat pump module is evaluated through internal leakage detection, maximum action pressure difference detection and minimum action pressure difference detection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a block diagram of the heat pump module detection system of the present application;

[0016] Figure 2 The figure is a block diagram of the heat pump module in the present application; Figure 1 The figure is a block diagram of the heat pump module in the present application;

[0017] Figure 3 The figure is a block diagram of the first air path in the present application; Figure 1 The figure is a block diagram of the first air path in the present application;

[0018] Figure 4 The figure is a block diagram of the first air path in the present application; Figure 1a block diagram of the second gas path;

[0019] Figure 5 for Figure 1 a block diagram of the gas source gas path;

[0020] Figure 6 Figure 5 a block diagram of the second main path, the third branch path, and the fourth branch path;

[0021] Figure 7 for Figure 5 a block diagram of the third branch path;

[0022] Figure 8 for Figure 5 a block diagram of the fourth branch path;

[0023] Figure 9 for Figure 5 a block diagram of the fifth branch path. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present application will be described in detail below with reference to the attached drawings. If there are several embodiments, the features of the embodiments can be combined with each other when there is no conflict. When the description refers to the drawings, the same numbers on different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all embodiments consistent with the present application; rather, they are merely examples of devices, products, and / or methods consistent with some aspects of the present application as recited in the claims of the present application.

[0025] The terms used in the present application are merely for the purpose of describing the exemplary embodiments, and are not intended to limit the scope of the protection of the present application. The singular forms "a," "an," and "the" used in the specification and claims of the present application are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0026] It should be understood that the use of terms such as "first" or "second", etc. in the description and claims of this application do not denote any order, quantity, or importance, but are used to distinguish a characteristic from another. Similarly, the use of terms such as "one" or "a" does not denote a quantity limitation, but means that at least one exists. Unless otherwise indicated, the terms "front", "back", "up", "down", etc. in the present application are used for the convenience of description only and are not intended to be limiting to a particular position or spatial orientation. The use of terms such as "include" or "comprise" or the like is an open-ended expression that is intended to cover a wide range of aspects, including equivalents, unless otherwise indicated. If "several" is used in the present application, it means two or more.

[0027] The present application discloses a heat pump module detection system for testing the internal leakage, maximum operating pressure difference and minimum operating pressure difference of a heat pump module 100. Specifically, referring to Figure 1 , the heat pump module 100 comprises a four-way reversing valve 1001, a gas-liquid separator 1002 and an EXCV 1003, wherein the EXCV 1003 is an electronic expansion valve for controlling the refrigerant flow, the gas-liquid separator 1002 is connected to the four-way reversing valve 1001, the four-way reversing valve 1001 is used for switching the air conditioning system between cooling mode and heating mode, and the gas-liquid separator 1002 is used for refrigerant storage and gas-liquid separation.

[0028] Referring to Figure 2 , the heat pump module 100 has a Comp port, a Cup port, a D port, an Eout port, an Ein port and a Cdown port. When the heat pump module 100 is working, the Comp port is used to connect the inlet of the compressor; the Cup port is used to connect the upper interface of the outdoor heat exchanger; the D port is used to connect the outlet of the indoor condenser or the outlet of the high-pressure plate heat exchanger; the Eout port is used to connect the outlet of the evaporator; the Ein port is used to connect the inlet of the evaporator; and the Cdown port is used to connect the lower interface of the outdoor heat exchanger. The four-way reversing valve 1001 has a first opening 101, a second opening 102, a third opening 103 and a fourth opening 104, and the first opening 101, the second opening 102, the third opening 103 and the fourth opening 104 are in communication with each other. The Comp port and the Eout port can be in communication with the first opening 101, the Cup port can be in communication with the second opening 102, the D port can be in communication with the third opening 103, and the Ein port and the Cdown port can be in communication with the fourth opening 104.

[0029] Specifically, continuing to refer to Figure 2The gas-liquid separator 1002 has a first port 106 and a second port 107. The Comp port is in communication with the first port 106. The first port 106 is in communication with the second port 107. The second port 107 is in communication with the first opening 101, so as to realize that the Comp port is in communication with the first opening 101. The EXCV 1003 has a third port 108 and a fourth port 109. The Ein port is in communication with the third port 108. The Cdown port is in communication with the fourth port 109. The third port 108 is in communication with the fourth opening 104. The fourth port 109 is in communication with the fourth opening 104, so as to realize that the Ein port and the Cdown port are in communication with the fourth opening 104.

[0030] In the related art, a ball flowmeter is used to detect the internal leakage of the four-way directional valve. The ball flowmeter has poor accuracy and large measurement error, and is prone to misjudgment. The internal leakage of the four-way directional valve is detected alone, and the test result can only reflect the performance of the four-way directional valve. The heat pump module detection system considers the influence factors of the gas-liquid separator 1002, and can evaluate the performance of the entire heat pump module 100 by detecting the heat pump module 100.

[0031] Referring to Figures 1 to 9 The heat pump module detection system includes a first gas circuit 1, a second gas circuit 2, and a gas source gas circuit 3. The first gas circuit 1 has a first interface 10 configured to be in communication with the first opening 101 of the heat pump module 100. The second gas circuit 2 has a second interface 20 configured to be in communication with the second opening 102 of the heat pump module 100. The gas source gas circuit 3 has a third interface 30 configured to be in communication with the third opening 103 of the heat pump module 100.

[0032] Specifically, the first interface 10 of the first gas circuit 1 is in communication with the Comp port, and the Comp port is in communication with the first opening 101 of the four-way directional valve 1001. The second interface 20 of the second gas circuit 2 is in communication with the Cup port, and the Cup port is in communication with the second opening 102 of the four-way directional valve 1001. The third interface 30 of the gas source gas circuit 3 is in communication with the D port, and the D port is in communication with the third opening 103 of the four-way directional valve 1001.

[0033] In some embodiments, referring to Figure 3The first gas path 1 comprises a first main path 11, a first branch path 12, a second branch path 13 and a first control valve 14. The first main path 11 has a first interface 10. The first branch path 12 is provided with a first pressure detection device 121 and a flow detection device 122. The first pressure detection device 121 is configured to detect a pressure value of the first opening 101. The flow detection device 122 is configured to detect a gas flow of the first opening 101. The second branch path 13 is provided with a first valve element 131. The first valve element 131 is configured to control a communication between the second branch path 13 and an outside of the heat pump module 100. When the first valve element 131 is opened, the second branch path 13 can be in communication with the atmosphere. The first control valve 14 is configured to control a communication between the first main path 11 and the first branch path 12 or the second branch path 13.

[0034] The first control valve 14 is a three-way valve. Specifically, referring back to Figure 3 The first control valve 14 has a first through port 141, a second through port 142 and a third through port 143. The first through port 141 is in communication with the first main path 11. The second through port 142 is in communication with the first branch path 12. The third through port 143 is in communication with the second branch path 13. The first through port 141 is in communication with the second through port 142 or the third through port 143. When the first through port 141 is in communication with the second through port 142, the first main path 11 is in communication with the first branch path 12. When the first through port 141 is in communication with the third through port 143, the first main path 11 is in communication with the second branch path 13. The first pressure detection device 121 is closer to the first control valve 14 than the flow detection device 122.

[0035] The first branch path 12 is provided with a second valve element 123. The second valve element 123 is arranged between the first pressure detection device 121 and the flow detection device 122. The second valve element 123 is configured to protect the flow detection device 122.

[0036] Referring back to Figure 4 The second gas path 2 comprises a first pressure relief valve 21, a second pressure detection device 22 and a third valve element 23. The third valve element 23 is arranged between the first pressure relief valve 21 and the second pressure detection device 22. The second pressure detection device 22 is configured to detect a pressure value of the second opening 102. The third valve element 23 is configured to protect the second pressure detection device 22.

[0037] In some embodiments, the first pressure relief valve 21 has a first port 211 and a second port 212. The third valve element 23 has a first communication port 231 and a second communication port 232. The first port 211 is configured to be in communication with the second opening 102 of the heat pump module 100. The second port 212 is in communication with the first communication port 231.

[0038] Referring back to Figure 5The gas source gas path 3 includes a second main path 31, a third branch path 32, a fourth branch path 33, a fifth branch path 34, a second control valve 35, a third control valve 36, a fourth control valve 37, and a fifth control valve 38. The second main path 31 includes a ball valve 311 connected to a gas source. The third branch path 32 includes a first pressure regulating valve 321 and a fourth valve 322. The fourth branch path 33 includes a fifth valve 331 and a second pressure regulating valve 332. The fifth branch path 34 includes a pressure boosting device 341 and a sixth valve 342. The second control valve 35 and the third control valve 36 control the communication of the second main path 31 with the third branch path 32, the fourth branch path 33, or the fifth branch path 34. The pressure regulating valve is used to regulate the pressure of the gas path. The pressure boosting device 341 is used to collect and boost the pressure of the gas.

[0039] The second control valve 35, the third control valve 36, the fourth control valve 37, and the fifth control valve 38 are all three-way valves. Specifically, referring to Figures 6 to 9 The second control valve 35 has a fourth port 351, a fifth port 352, and a sixth port 353. The fourth port 351 communicates with the fifth port 352 or the sixth port 353. The third control valve 36 has a seventh port 361, an eighth port 362, and a ninth port 363. The seventh port 361 communicates with the eighth port 362 or the ninth port 363. The fourth control valve 37 has a tenth port 371, an eleventh port 372, and a twelfth port 373. The tenth port 371 or the eleventh port 372 communicates with the twelfth port 373. The fifth control valve 38 has a thirteenth port 381, a fourteenth port 382, and a fifteenth port 383. The thirteenth port 381 or the fourteenth port 382 communicates with the fifteenth port 383. The third branch path 32 has a fourth interface 321 and a fifth interface 322. The fourth branch path 33 has a sixth interface 331 and a seventh interface 332. The fifth branch path 34 has an eighth interface 341 and a ninth interface 342. The fourth port 351 communicates with the second main path 31. The fifth port 352 communicates with the fourth interface 321 of the third branch path 32. The sixth port 353 communicates with the seventh port 361. The eighth port 362 communicates with the sixth interface 331 of the fourth branch path 33. The ninth port 363 communicates with the eighth interface 341 of the fifth branch path 34. The tenth port 371 communicates with the seventh interface 332 of the fourth branch path 33. The eleventh port 372 communicates with the ninth interface 342 of the fifth branch path 34. The twelfth port 373 communicates with the thirteenth port 381. The fourteenth port 382 communicates with the fifth port 352 of the third branch path 32. The fifteenth port 383 communicates with the third interface 30.

[0040] The second control valve 35 and the third control valve 36 are arranged to control the communication between the second main line 31 and the third branch line 32, the fourth branch line 33 or the fifth branch line 34. When the fourth through port 351 communicates with the fifth through port 352, the second main line 31 communicates with the third branch line 32, and 0.5 MPa gas is delivered to the heat pump module 100 through the third branch line 32. When the fourth through port 351 communicates with the sixth through port 353, the seventh through port 361 communicates with the ninth through port 363, the second main line 31 communicates with the fifth branch line 34, and 2.5 MPa gas is delivered to the heat pump module 100 through the fifth branch line 34. When the fourth through port 351 communicates with the sixth through port 353, the seventh through port 361 communicates with the eighth through port 362, the second main line 31 communicates with the fourth branch line 33, and 0.25 MPa gas is delivered to the heat pump module 100 through the fourth branch line 33. The gas source gas line 3 of the present application delivers gas with different pressure values to the heat pump module 100 through different branch lines, which is easy to control the gas pressure value, meets the detection requirement, and is beneficial to improve the detection accuracy.

[0041] The fourth control valve 37 and the fifth control valve 38 are arranged to reduce the diffusion of gas to the non-working branch line, reduce the influence on the gas pressure value, and make the actual gas pressure value closer to the preset gas pressure value. For example, if the gas source gas line 3 is only provided with the second control valve 35 and the third control valve 36, when the second main line 31 communicates with the third branch line 32, the gas in the third branch line 32 can enter the fourth branch line 33 and the fifth branch line 34, so that the actual gas pressure value is lower than the preset pressure value; when the second main line 31 communicates with the fourth branch line 33, the gas in the fourth branch line 33 can enter the third branch line 32 and the fifth branch line 34, so that the actual gas pressure value is lower than the preset pressure value; when the second main line 31 communicates with the fifth branch line 34, the gas in the fifth branch line 34 can enter the third branch line 32 and the fourth branch line 33, so that the actual gas pressure value is lower than the preset pressure value.

[0042] In some embodiments, the first pressure regulating valve 321 is close to the second control valve 35 relative to the fourth valve piece 322, the fifth valve piece 331 is close to the third control valve 36 relative to the second pressure regulating valve 332, and the pressure boosting device 341 is close to the third control valve 36 relative to the sixth valve piece 342.

[0043] In the embodiment shown in the present application, referring to Figure 5 The gas source gas line 3 includes an exhaust valve 39 arranged in the fifth branch line 34 between the pressure boosting device 341 and the sixth valve piece 342.

[0044] The heat pump module detection system includes a second pressure relief valve 41 having a first connection port 410 configured to communicate with the fourth opening 104 of the heat pump module 100.

[0045] Referring to Figure 1 The heat pump module detection system comprises a pressure switch 51, the pressure switch 51 has a second connecting port 510, the second connecting port 510 is configured to communicate with a fifth opening of the heat pump module 100, and the fifth opening communicates with the first opening 101. The fifth opening is an Eout port of the heat pump module 100.

[0046] The application further discloses a detection method of a heat pump module, which comprises the following steps:

[0047] S1, detecting internal leakage of the heat pump module 100.

[0048] Specifically, the heat pump module 100 is adjusted to be in a power-off state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the Cdown port of the heat pump module 100 is in a blocked state, the flow detection device 122 and the second valve 123 are opened, the first control valve 14 controls the first main line 11 to communicate with the first branch line 12, 0.5 Mpa air is introduced into the heat pump module 100 through the gas source gas line 3, after stabilization, the first flow value is obtained by the flow detection device 122, the first pressure relief valve 21 is opened, and the detection data is obtained by the second pressure detection device 22; the heat pump module 100 is adjusted to be in a power-on state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the flow detection device 122 and the second valve 123 are opened, the first control valve 14 controls the first main line 11 to communicate with the first branch line 12, 0.5 Mpa air is introduced into the heat pump module 100 through the gas source gas line 3, the second flow value is obtained by the flow detection device 122, the first pressure relief valve 21 is opened, and the detection data is obtained by the second pressure detection device 22; when the first flow value and the second flow value are both less than 1500 ml / min, the internal leakage of the heat pump module 100 is in a reasonable range. If the internal leakage exceeds 1500 ml / min, the switching of the valve plate of the four-way reversing valve 1001 is affected.

[0049] In this step, the second main line 31 of the gas source gas line 3 is controlled to communicate with the third branch line 32, the fourth valve 322 is opened, and 0.5 Mpa air is introduced into the heat pump module 100 through the third branch line 32.

[0050] S2, when the internal leakage meets the requirements, maximum action pressure difference detection is performed on the heat pump module 100.

[0051] Specifically, when the internal leakage meets the requirements, the heat pump module 100 is adjusted to be in a power-off state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed; air with a first pressure value is introduced into the heat pump module 100 through the gas source gas line 3, when the air pressure in the heat pump module 100 reaches the first pressure value, the gas source gas line 3 stops introducing air into the heat pump module 100, the first pressure relief valve 21 is opened, and the first detection value is obtained by the second pressure detection device 22;

[0052] The heat pump module 100 is adjusted to be in the power-on state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the air source air path 3 is used to introduce air with the first pressure value into the heat pump module 100, when the air pressure in the heat pump module 100 reaches the first pressure value, the air source air path 3 stops introducing air into the heat pump module 100, the atmospheric pressure is detected by the pressure switch 51, the first pressure relief valve 21 and the second pressure relief valve 41 are opened, and the first difference between the first detection value and the atmospheric pressure is obtained;

[0053] The heat pump module 100 is adjusted to be in the power-off state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the air source air path 3 is used to introduce air with the first pressure value into the heat pump module 100, when the air pressure in the heat pump module 100 reaches the first pressure value, the air source air path 3 stops introducing air into the heat pump module 100, the first pressure relief valve 21 is opened, the second pressure detection device 22 obtains the second detection value, and the second difference between the second detection value and the atmospheric pressure is obtained; wherein the first pressure value is 2.5 Mpa.

[0054] In this step, the second main path 31 and the fifth branch path 34 of the air source air path 3 are communicated, the sixth valve element 342 is opened, and 2.5 Mpa air is introduced into the heat pump module 100 through the fifth branch path 34. The first difference is the maximum action pressure difference of the heat pump module 100 switched from the refrigeration mode to the heating mode, and the second difference is the maximum action pressure difference of the heat pump module 100 switched from the heating mode to the refrigeration mode. When the first difference and the second difference are less than 2.5 Mpa, the four-way reversing valve 1001 meets the performance requirements. When the first difference and the second difference are greater than 2.5 Mpa, the four-way reversing valve 1001 has the risk of internal leakage due to overposition, resulting in unqualified products.

[0055] S3, when the first difference and the second difference meet the requirements, the minimum action pressure difference of the heat pump module 100 is detected.

[0056] Specifically, when the first difference and the second difference meet the requirements, the heat pump module 100 is adjusted to be in the power-off state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the air source air path 3 is used to introduce air with the second pressure value into the heat pump module 100, when the air pressure in the heat pump module 100 reaches the second pressure value, the air source air path 3 stops introducing air into the heat pump module 100, the first pressure relief valve 21 is opened, and the third detection value is obtained by the second pressure detection device 22;

[0057] The heat pump module 100 is adjusted to be in the power-on state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the air source air path 3 is used to introduce the air with the second pressure value into the heat pump module 100, when the air pressure in the heat pump module 100 reaches the second pressure value, the air source air path 3 stops introducing the air into the heat pump module 100, the first pressure relief valve 21 and the second pressure relief valve 41 are opened, the third detection value and the third difference value of the atmospheric pressure are obtained;

[0058] The heat pump module 100 is adjusted to be in the power-off state, the first pressure relief valve 21 and the second pressure relief valve 41 are closed, the air source air path 3 is used to introduce the air with the second pressure value into the heat pump module 100, when the air pressure in the heat pump module 100 reaches the second pressure value, the air source air path 3 stops introducing the air into the heat pump module 100, the first pressure relief valve 21 is opened, the fourth detection value is obtained by the second pressure detection device 22, and the fourth difference value of the atmospheric pressure is obtained; wherein the second pressure value is 0.25Mpa.

[0059] In this step, the second main path 31 and the fourth branch path 33 of the air source air path 3 are communicated, the fifth valve 331 is opened, and the air with the pressure of 0.25Mpa is introduced into the heat pump module 100 through the fourth branch path 33.

[0060] The third difference value is the minimum action pressure difference when the heat pump module 100 is switched from the refrigeration mode to the heating mode, and the fourth difference value is the minimum action pressure difference when the heat pump module 100 is switched from the heating mode to the refrigeration mode. When the third difference value and the fourth difference value are greater than 0.25Mpa, the four-way reversing valve 1001 meets the performance requirements. When the first difference value and the second difference value are less than 0.25Mpa, the four-way reversing valve 1001 has the risk of not reaching the position and causing internal leakage, resulting in unqualified products.

[0061] The power-off state of the heat pump module 100 is the refrigeration state of the air conditioning system, at this time, the first opening 101 and the fourth opening 104 of the four-way reversing valve 1001 are communicated, and the second opening 102 and the third opening 103 are communicated. The power-on state of the heat pump module 100 is the heating state of the air conditioning system, at this time, the first opening 101 and the second opening 102 of the four-way reversing valve 1001 are communicated, and the third opening 103 and the fourth opening 104 are communicated.

[0062] The above embodiments are only used to illustrate the present application and not to limit the technical solutions described in the present application. The understanding of the present application should be based on the technical personnel in the art. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical personnel in the art can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered in the scope of claims of the present application.

Claims

1. A heat pump module testing system for testing a heat pump module (100), the heat pump module (100) including a four-way reversing valve (1001), the four-way reversing valve (1001) having a first opening (101), a second opening (102), a third opening (103) and a fourth opening (104), characterized in that, It includes a first gas path (1), a second gas path (2) and a gas source gas path (3). The first gas path (1) has a first interface (10) configured to communicate with the first opening (101) of the heat pump module (100). The second gas path (2) has a second interface (20) configured to communicate with the second opening (102) of the heat pump module (100). The gas source gas path (3) has a third interface (30) configured to communicate with the third opening (103) of the heat pump module (100). The first gas path (1) includes a first main path (11), a first branch path (12), a second branch path (13) and a first control valve (14). The first main path (11) has the first interface (10). The first branch path (12) is provided with a first pressure detection device (121) and a flow detection device (122). The second branch path (13) is provided with a first valve (131). The first valve (131) is used to control the external connection between the second branch path (13) and the heat pump module (100). The first control valve (14) is used to control the connection between the first main path (11) and the first branch path (12) or the second branch path (13). The second gas path (2) includes a first pressure relief valve (21) and a second pressure detection device (22); the heat pump module detection system includes a second pressure relief valve (41), the second pressure relief valve (41) has a first connection port (410), the first connection port (410) is configured to communicate with the fourth opening (104) of the heat pump module (100), and the first opening (101), the second opening (102), the third opening (103) and the fourth opening (104) are connected to each other.

2. The heat pump module detection system according to claim 1, characterized in that, The first control valve (14) has a first port (141), a second port (142) and a third port (143). The first port (141) is connected to the first main road (11), the second port (142) is connected to the first branch road (12), and the third port (143) is connected to the second branch road (13). The first port (141) is connected to the second port (142) or the third port (143).

3. The heat pump module detection system according to claim 2, characterized in that, The first pressure detection device (121) is closer to the first control valve (14) relative to the flow detection device (122), and the first branch (12) is provided with a second valve (123), which is located between the first pressure detection device (121) and the flow detection device (122).

4. The heat pump module detection system according to claim 1, characterized in that, The second air passage (2) includes a third valve (23), which is located between the first pressure relief valve (21) and the second pressure detection device (22); The first pressure relief valve (21) has a first port (211) and a second port (212), and the third valve (23) has a first connection port (231) and a second connection port (232). The first port (211) is configured to communicate with the second opening (102) of the heat pump module (100), and the second port (212) is connected to the first connection port (231).

5. The heat pump module detection system according to claim 1, characterized in that, The heat pump module detection system includes a pressure switch (51), the pressure switch (51) has a second connection port (510), the second connection port (510) is configured to communicate with the fifth opening of the heat pump module (100), the fifth opening is communicated with the first opening (101), and the fifth opening is the Eout port of the heat pump module (100).

6. The heat pump module detection system according to claim 1, characterized in that, The gas source circuit (3) includes a second main circuit (31), a third branch circuit (32), a fourth branch circuit (33), a fifth branch circuit (34), a second control valve (35), a third control valve (36), a fourth control valve (37), and a fifth control valve (38). The second main circuit (31) includes a ball valve (311). The third branch circuit (32) includes a first pressure regulating valve (321) and a fourth valve (322). The fourth branch circuit (33) includes a fifth valve (331) and a second pressure regulating valve (332). The fifth branch circuit (34) includes a booster device (341) and a sixth valve (342). The second control valve (35) has a fourth port (351), a fifth port (352), and a sixth port (353), wherein the fourth port (351) is connected to either the fifth port (352) or the sixth port (353); the third control valve (36) has a seventh port (361), an eighth port (362), and a ninth port (363), wherein the seventh port (361) is connected to either the eighth port (362) or the ninth port (363); and the fourth control valve (37) has a tenth port (371), an eleventh port, and a... The fifth control valve (38) has a thirteenth port (381), a fourteenth port (382), and a fifteenth port (383), with the thirteenth port (381) or the fourteenth port (382) connected to the fifteenth port (383). The third branch (32) has a fourth interface (323) and a fifth interface (324). The fourth branch (33) has... The fifth branch (34) has a sixth interface (333) and a seventh interface (334), and has an eighth interface (343) and a ninth interface (344). The fourth port (351) is connected to the second main road (31), the fifth port (352) is connected to the fourth interface (323) of the third branch (32), the sixth port (353) is connected to the seventh port (361), the eighth port (362) is connected to the sixth interface (333) of the fourth branch (33), and the ninth port (363) is connected to the... The eighth interface (343) of the fifth branch (34) is connected, the tenth port (371) is connected to the seventh interface (334) of the fourth branch (33), the eleventh port (372) is connected to the ninth interface (344) of the fifth branch (34), the twelfth port (373) is connected to the thirteenth port (381), the fourteenth port (382) is connected to the fifth port (352) of the third branch (32), and the fifteenth port (383) is connected to the third interface (30).

7. The heat pump module detection system according to claim 6, characterized in that, The first pressure regulating valve (321) is closer to the second control valve (35) relative to the fourth valve (322), the fifth valve (331) is closer to the third control valve (36) relative to the second pressure regulating valve (332), and the booster device (341) is closer to the third control valve (36) relative to the sixth valve (342).

8. The heat pump module detection system according to claim 7, characterized in that, The gas source gas path (3) includes an exhaust valve (39), which is located in the fifth branch (34) and between the booster device (341) and the sixth valve (342).

9. A method for testing a heat pump module, characterized in that, The heat pump module detection system includes any one of claims 5 to 8, wherein the heat pump module detection system includes a pressure switch (51), and the heat pump module detection method includes the following steps: Internal leakage detection was performed on the heat pump module (100); When the internal leakage meets the requirements, the heat pump module (100) is adjusted to be in a power-off state, and the first pressure relief valve (21) and the second pressure relief valve (41) are closed; air with a first pressure value is introduced into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the first pressure value, the air supply to the heat pump module (100) is stopped, the first pressure relief valve (21) is opened, and the second pressure detection device (22) obtains the first detection value. Adjust the heat pump module (100) to be in the powered state, close the first pressure relief valve (21) and the second pressure relief valve (41), and introduce air of the first pressure value into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the first pressure value, stop introducing air into the heat pump module (100). The pressure switch (51) detects the atmospheric pressure, opens the first pressure relief valve (21) and the second pressure relief valve (41), and obtains the first difference between the first detection value and the atmospheric pressure. Adjust the heat pump module (100) to a power-off state, close the first pressure relief valve (21) and the second pressure relief valve (41), and introduce air at a first pressure value into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the first pressure value, stop introducing air into the heat pump module (100), open the first pressure relief valve (21), and the second pressure detection device (22) obtains a second detection value and obtains a second difference between the second detection value and the atmospheric pressure.

10. The detection method for a heat pump module according to claim 9, characterized in that, The heat pump module testing method includes the following steps: When the first difference and the second difference meet the requirements, the heat pump module (100) is adjusted to be in a power-off state, the first pressure relief valve (21) and the second pressure relief valve (41) are closed, and air with a second pressure value is introduced into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the second pressure value, the air supply to the heat pump module (100) is stopped, the first pressure relief valve (21) is opened, and the second pressure detection device (22) obtains the third detection value. Adjust the heat pump module (100) to be in the powered state, close the first pressure relief valve (21) and the second pressure relief valve (41), and introduce air with a second pressure value into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the second pressure value, stop introducing air into the heat pump module (100), open the first pressure relief valve (21) and the second pressure relief valve (41), and obtain the third difference between the third detection value and the atmospheric pressure. Adjust the heat pump module (100) to a power-off state, close the first pressure relief valve (21) and the second pressure relief valve (41), and introduce air of a second pressure value into the heat pump module (100) through the air source air passage (3). When the air pressure in the heat pump module (100) reaches the second pressure value, stop introducing air into the heat pump module (100), open the first pressure relief valve (21), and the second pressure detection device (22) obtains a fourth detection value and obtains a fourth difference between the fourth detection value and the atmospheric pressure. The first pressure value is greater than the second pressure value.

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