Heat pump test platform

Abstract

The invention relates to a heat pump test platform which comprises a heat source supply assembly and a cold source supply assembly, the cold source supply assembly comprises a first water mixing branch, a first water supply branch and a first water return branch, and the first water mixing branch comprises a first water tank, a first water mixing valve and a second water tank; two water inlets of the first water mixing valve are respectively connected to the first water tank and the second water tank; the first water supply branch comprises a first water pump and a first connector, a water inlet of the first water pump is connected to a water outlet of the first water mixing valve, and a water outlet of the first water pump is connected to the first connector; the first water return branch comprises a first radiator and a second connector, and two water ports of the first radiator are connected to the second connector and the first water tank respectively. According to the embodiment of the invention, constant-temperature water supply for the condenser can be realized without depending on a water chilling unit, the power consumption is low, and the manufacturing cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of heat pump and refrigeration system detection, and in particular to a heat pump testing platform. Background Art

[0002] Heat pumps can be used in a variety of fields, including indoor heating, industrial heat, food drying, metal processing, petrochemical heat, etc. Their working principle is based on the reverse Carnot cycle of thermodynamics, and heat absorption and release are achieved through the state change of the refrigerant at different temperatures and pressures. Compared with traditional resistance heating air conditioners or independent heating systems, heat pumps have a higher energy efficiency ratio, and can save energy while regulating the temperature of the corresponding area to meet the needs of users. According to the different low-temperature heat sources, heat pumps can be divided into air source heat pumps, water source heat pumps and other types.

[0003] The heat pump test platform is a test system used to test and evaluate the performance of heat pump equipment. It can simulate different environmental conditions and different operating conditions, and provide a stable and constant test environment and test conditions for heat pump testing.

[0004] At present, the heat pump test system generally realizes the adjustment and matching of system load and the adjustment and setting of different indoor ambient temperatures through chillers and hot water units. The chillers and hot water units have high construction costs, occupy large areas, and have high operating power consumption. Summary of the invention

[0005] The embodiment of the present application provides a heat pump testing platform, which can achieve constant temperature water supply to the condenser without relying on a chiller, has low power consumption, small footprint and low cost.

[0006] In the first aspect, an embodiment of the present application provides a heat pump test platform, including a heat source supply component and a cold source supply component, the cold source supply component including: a first mixing water branch, including a first water tank, a first mixing water valve and a second water tank, the two water inlets of the first mixing water valve are respectively connected to the first water tank and the second water tank; a first water supply branch, including a first water pump and a first interface, the water inlet of the first water pump is connected to the water outlet of the first mixing water valve, the water outlet of the first water pump is connected to the first interface, the first interface is used to connect to the condenser of the heat pump to be tested, so as to supply water to the condenser at a constant temperature; a first return water branch, including a first radiator and a second interface, the two water outlets of the first radiator are respectively connected to the second interface and the first water tank, and the second interface is used to connect to the condenser, so as to draw out the circulating water in the condenser.

[0007] In some embodiments, the heat source supply component includes: a second water mixing branch, including a second water mixing valve, and two water inlets of the second water mixing valve are respectively connected to the first water tank and the second water tank; a second water supply branch, including a second water pump and a third interface, the water inlet of the second water pump is connected to the water outlet of the second water mixing valve, and the water outlet of the second water pump is connected to the third interface, and the second interface is used to connect to the evaporator of the heat pump to be tested to supply water to the evaporator at a constant temperature; a second return water branch, including a fourth interface, the fourth interface is connected to the second water tank, and the fourth interface is used to connect to the evaporator to draw out the circulating water in the evaporator.

[0008] In some embodiments, the heat pump test platform further includes: a test chamber, wherein the first interface, the second interface, the third interface, the fourth interface and the first radiator are all located in the test chamber; and a second radiator is installed on the chamber wall of the test chamber.

[0009] In some embodiments, the second radiator includes a fan, an air inlet of the fan is arranged opposite to the first radiator, and an air outlet of the fan is connected to the outside of the test chamber.

[0010] In some embodiments, the heat pump test platform further includes a regulating branch, the regulating branch includes a regulating valve, and two water inlets of the regulating valve are respectively connected to the first water tank and the second water tank.

[0011] In some embodiments, the regulating branch further includes a bidirectional pump, and the regulating valve is connected between the bidirectional pump and the first water tank, or the regulating valve is connected between the bidirectional pump and the second water tank.

[0012] In some embodiments, the heat pump test platform also includes a first valve group, which includes: a first valve, two first valves are installed on both sides of the second mixing valve; a second valve is installed on the second water supply branch; and a third valve is installed on the second return water branch.

[0013] In some embodiments, the heat pump test platform also includes a second valve group, which includes: a fourth valve, two fourth valves are installed on both sides of the first mixing valve; a fifth valve, installed on the first water supply branch; a sixth valve, installed on the first return water branch, and the sixth valve is connected between the first radiator and the first water tank.

[0014] In some embodiments, the heat pump testing platform further includes an equipment compartment, and the first water mixing branch, the second water mixing branch, the first water tank, the second water tank, the first water pump, the second water pump, the first valve group and the second valve group are all located in the equipment compartment.

[0015] In some embodiments, the first heat sink comprises a cooling tower.

[0016] The heat pump test platform of the embodiment of the present application includes a heat source supply component and a cold source supply component, the cold source supply component includes a first mixing water branch, a first water supply branch and a first return water branch, wherein the first mixing water branch includes a first water tank, a first mixing water valve and a second water tank, and the two water inlets of the first mixing water valve are respectively connected to the first water tank and the second water tank; the first water supply branch includes a first water pump and a first interface, the water inlet of the first water pump is connected to the water outlet of the first mixing water valve, the water outlet of the first water pump is connected to the first interface, and the first interface is used to connect to the condenser of the heat pump to be tested to supply water to the condenser at a constant temperature; the first return water branch includes a first radiator and a second interface, the two water outlets of the first radiator are respectively connected to the second interface and the first water tank, and the second interface is used to connect to the condenser to draw out the circulating water in the condenser. Before conducting a heat pump test, circulating water of initial temperature is added to the first water tank and the second water tank respectively. After the circulating water is added, the circulating water temperature in the first water tank is the temperature of the first water tank, and the circulating water temperature in the second water tank is the temperature of the second water tank; the first mixing water branch mixes the circulating water in the first water tank with the circulating water in the second water tank through the first mixing water valve, and outputs circulating water of the first preset temperature after a period of heating circulation of the heat pump to be tested. At this time, the first preset temperature is between the temperature of the first water tank and the temperature of the second water tank. After this part of the circulating water is automatically adjusted by the first mixing water valve, the output temperature of the circulating water is stably constant at the first preset temperature; the first water pump in the first water supply branch transports the constant temperature circulating water output by the first mixing water valve to the first interface, and transports it to the condenser of the heat pump to be tested through the first interface; the circulating water heated by the condenser flows into the first return water branch through the second interface, and enters the first water tank after flowing through the first radiator. On the one hand, the technical solution can realize constant temperature water supply to the condenser through the first mixing water valve. During the test of the heat pump, it is only necessary to provide the energy required for the circulation water flow to supply constant temperature water to the condenser. The power consumption is low, and there is no large-scale chiller and complex control system, and the overall cost is low. On the other hand, by adjusting the first mixing water valve, the first preset temperature can meet the preset requirements, thereby meeting the test needs of test equipment with different powers and different working conditions. On the other hand, by using the first radiator to dissipate the heat of the circulating water heated by the condenser, the temperature of the water entering the first water tank can be reduced, and the heating rate of the circulating water in the first water tank can be reduced, so as to increase the water supply time of the first water supply branch. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of the structure of a heat pump test platform provided in an embodiment of the present application;

[0019] Figure 2 A connection diagram for testing a water source heat pump provided in an embodiment of the present application;

[0020] Figure 3 A connection diagram for testing an air source heat pump provided in an embodiment of the present application.

[0021] In the figure:

[0022] 1. First water mixing branch; 101. First water tank; 102. First water mixing valve; 103. Second water tank;

[0023] 2. First water supply branch; 21. First water pump; 22. First interface;

[0024] 3. Heat pump to be tested; 31. Condenser; 32. Evaporator;

[0025] 4. First water return branch; 41. Second interface; 42. First radiator;

[0026] 51. Second mixing valve;

[0027] 6. Second water supply branch; 61. Second water pump; 62. Third interface;

[0028] 71. Fourth interface;

[0029] 8. Regulating branch; 81. Regulating valve; 82. Bidirectional pump;

[0030] 9. Test warehouse;

[0031] 10. Equipment warehouse;

[0032] 11. Second radiator;

[0033] 12, first valve group; 121, first valve; 122, second valve; 123, third valve;

[0034] 13. Second valve group; 131. Fourth valve; 132. Fifth valve; 133. Sixth valve. DETAILED DESCRIPTION

[0035] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0037] The heat pump test platform is a test system used to test and evaluate the performance of heat pump equipment. It can simulate different environmental conditions and different working conditions, and provide a stable and constant test environment and test conditions for heat pump testing. According to research, the heat pump test system generally uses chillers and hot water units to adjust and match the system load and adjust and set different indoor ambient temperatures. The cost of chillers and hot water units is high, the floor space is large, and the operating power consumption is high.

[0038] In order to solve the problems in the prior art, the present application provides a heat pump test platform, which is described in detail below in conjunction with the accompanying drawings.

[0039] Figure 1 A schematic diagram of the structure of a heat pump test platform provided in an embodiment of the present application; Figure 2 A connection diagram for testing a water source heat pump provided in an embodiment of the present application; Figure 3 A connection diagram for testing an air source heat pump provided in an embodiment of the present application.

[0040] See also Figures 1 to 3The embodiment of the present application provides a heat pump test platform, including a heat source supply component and a cold source supply component, the cold source supply component includes a first water mixing branch 1, a first water supply branch 2 and a first water return branch 4, wherein the first water mixing branch 1 includes a first water tank 101, a first water mixing valve 102 and a second water tank 103, and the two water inlets of the first water mixing valve 102 are respectively connected to the first water tank 101 and the second water tank 103; the first water supply branch 2 includes a first water pump 21 and a first interface 22, the first water The water inlet of the pump 21 is connected to the water outlet of the first mixing valve 102, and the water outlet of the first water pump 21 is connected to the first interface 22. The first interface 22 is used to connect to the condenser 31 of the heat pump 3 to be tested so as to supply water to the condenser 31 at a constant temperature; the first return water branch 4 includes a first radiator 42 and a second interface 41. The two water outlets of the first radiator 42 are respectively connected to the second interface 41 and the first water tank 101. The second interface 41 is used to connect to the condenser 31 to draw out the circulating water in the condenser 31.

[0041] Before the heat pump test, circulating water of initial temperature is added to the first water tank 101 and the second water tank 103 respectively. After the circulating water is added, the circulating water temperature in the first water tank 101 is the first water tank temperature, and the circulating water temperature in the second water tank 103 is the second water tank temperature; the first water mixing branch 1 mixes the circulating water in the first water tank 101 with the circulating water in the second water tank 103 through the first water mixing valve 102, and after a period of heating circulation of the heat pump 3 to be tested, the circulating water of the first preset temperature is output. At this time, the first preset temperature The temperature of this part of circulating water is between the temperature of the first water tank and the temperature of the second water tank. After being automatically adjusted by the first mixing valve 102, the circulating water with a stable output temperature constant as the first preset temperature is output; the first water pump 21 in the first water supply branch 2 delivers the constant temperature circulating water output by the first mixing valve 102 to the first interface 22, and delivers it to the condenser 31 of the heat pump 3 to be tested through the first interface 22; the circulating water heated by the condenser 31 flows into the first return water branch 4 through the second interface 41, and enters the first water tank 101 after flowing through the first radiator 42.

[0042] It should be noted that tap water can be used as circulating water. The water temperature of tap water that can be provided by the current water pipe is generally below 15°C, and the first preset temperature required for the heat pump test is generally between 15°C and 50°C. Therefore, tap water can be added to the first water tank 101 and the second water tank 103 respectively, and the water temperature of the tap water can be directly used as the second water tank temperature lower than the first preset temperature; in addition, the first water pump 21 and the heat pump 3 to be tested are started, and the water in the first water tank 101 and the second water tank 103 is heated by the condenser 31 after passing through the first water mixing branch 1 and the first water supply branch 2, and then flows into the first water tank 101 through the first water return branch 4. Therefore, the water temperature in the first water tank 101 will gradually increase until the water temperature in the first water tank 101 reaches the first water tank temperature higher than or equal to the first preset temperature, then the circulating water output by the first water mixing valve 102 can reach the first preset temperature, and the heat pump test platform can start the normal test work of the heat pump 3 to be tested.

[0043] On the one hand, the technical solution can realize constant temperature water supply to the condenser 31 through the first mixing water valve 102. During the test of the heat pump, it is only necessary to provide the energy required for the circulation water flow to supply constant temperature water to the condenser 31. The power consumption is low, and there is no large-scale chiller and complex control system. The overall footprint is small and the cost is low. On the other hand, by adjusting the first mixing water valve 102, the first preset temperature can meet the preset requirements, thereby meeting the test requirements of test equipment with different powers and different working conditions. On the other hand, by using the first radiator 42 to dissipate the heat of the circulating water heated by the condenser 31, the temperature of the water entering the first water tank 101 can be reduced, and the heating rate of the circulating water in the first water tank 101 can be reduced, so as to relatively increase the water supply time of the first water supply branch 2.

[0044] like Figure 1 and Figure 2 As shown, in some embodiments, the heat source supply component includes a second water mixing branch, a second water supply branch 6 and a second water return branch, wherein the second water mixing branch includes a second water mixing valve 51, and the two water inlets of the second water mixing valve 51 are respectively connected to the first water tank 101 and the second water tank 103; the second water supply branch 6 includes a second water pump 61 and a third interface 62, the water inlet of the second water pump 61 is connected to the water outlet of the second water mixing valve 51, and the water outlet of the second water pump 61 is connected to the third interface 62, and the second interface 41 is used to connect to the evaporator 32 of the heat pump 3 to be tested, so as to supply water to the evaporator 32 at a constant temperature; the second water return branch includes a fourth interface 71, the fourth interface 71 is connected to the second water tank 103, and the fourth interface 71 is used to connect to the evaporator 32 to draw out the circulating water in the evaporator 32.

[0045] During the test of the water source heat pump, the second mixing water branch mixes the circulating water in the first water tank 101 and the circulating water in the second water tank 103 through the second mixing water valve 51, and outputs constant temperature circulating water of a second preset temperature, wherein the second preset temperature is between the temperature of the first water tank and the temperature of the second water tank; the second water pump 61 in the second water supply branch 6 transports the constant temperature circulating water output by the second mixing water valve 51 to the third interface 62, and transports it to the evaporator 32 of the heat pump 3 to be tested through the third interface 62; the circulating water after cooling by the evaporator 32 flows into the second return water branch through the fourth interface 71, and enters the second water tank 103 through the corresponding pipeline of the second return water branch.

[0046] On the one hand, the technical solution can realize constant temperature water supply to the evaporator 32 through the second mixing water valve 51. During the test of the heat pump, it is only necessary to provide the energy required for the circulation water flow to supply constant temperature water to the evaporator 32. The power consumption is low, and there is no large hot water unit and complex control system. The overall footprint is small and the cost is low. On the other hand, by adjusting the second mixing water valve 51, the second preset temperature can meet the preset requirements, thereby meeting the test needs of test equipment with different powers and different working conditions.

[0047] In some embodiments, the temperature of the first water tank is greater than the temperature of the second water tank, and the temperature of the circulating water after being cooled by the first radiator 42 is greater than the first preset temperature. It is understandable that during the test of the water source heat pump, the circulating water heated by the condenser 31 enters the first water tank 101 through the first return water branch 4, and the temperature of the circulating water in the first water tank 101 will slowly increase; the circulating water cooled by the evaporator 32 enters the second water tank 103 through the second return water branch, and the temperature of the circulating water in the second water tank 103 will slowly decrease. Since the first preset temperature and the second preset temperature are both between the temperature of the first water tank and the temperature of the second water tank, during the test of the water source heat pump, the first preset temperature and the second preset temperature are always between the temperature of the circulating water in the first water tank 101 and the temperature of the circulating water in the second water tank 103, which can ensure that the first mixing valve 102 can continuously output the circulating water of the first preset temperature, and the second mixing valve 51 can continuously output the circulating water of the second preset temperature.

[0048] like Figures 1 to 3 As shown, in some embodiments, the heat pump test platform further includes a test chamber 9 and a second radiator 11, the first interface 22, the second interface 41, the third interface 62, the fourth interface 71 and the first radiator 42 are all located in the test chamber 9; the second radiator 11 is installed on the chamber wall of the test chamber 9. The test chamber 9 can provide a relatively stable test environment for the heat pump 3 to be tested. Figure 2 As shown, for the water source heat pump test, the second radiator 11 can discharge most of the heat emitted by the first radiator 42 to ensure that the temperature in the test chamber 9 meets the preset requirements. Figure 3 As shown, for the air source heat pump test, the heat of the circulating water heated by the condenser 31 is transferred to the air in the test chamber 9 through the first radiator 42, so that the temperature of the air in the test chamber 9 increases. The evaporator 32 is used to absorb the heat of the air in the test chamber 9, which can form a heat balance between the heat dissipation of the first radiator 42 and the heat absorption load of the evaporator 32, which can further reduce the overall energy consumption of the heat pump test platform. Specifically, Figure 3 As shown, for the air source heat pump test, if the required ambient temperature in the test chamber 9 is higher than the initial temperature in the test chamber 9, the second radiator 11 is closed, and the heat emitted by the first radiator 42 heats the ambient temperature in the test chamber 9. After it reaches the required ambient temperature, the first radiator 42 is coupled with the second radiator 11 to adjust the load and keep the ambient temperature in the test chamber 9 constant; if the required ambient temperature in the test chamber 9 is lower than the initial temperature in the test chamber 9, the second radiator 11 is turned on, and the heat dissipation load of the first radiator 42 is all caused to the outside of the test chamber 9. The temperature in the test chamber 9 is reduced to the required temperature under the action of evaporation of the tested unit, and the first radiator 42 is coupled with the second radiator 11 to adjust the load and keep the ambient temperature in the test chamber 9 constant.

[0049] like Figures 1 to 3 As shown, in some embodiments, the second radiator 11 includes a fan, the air inlet of the fan is arranged opposite to the first radiator 42, and the air outlet of the fan is connected to the outside of the test chamber 9, so that the heat emitted by the first radiator 42 can be quickly dissipated to the outside of the test chamber 9. In addition, the fan has a simple structure and low cost.

[0050] like Figures 1 to 3 As shown, in some embodiments, the heat pump test platform further includes a regulating branch 8, the regulating branch 8 includes a regulating valve 81, and two water ports of the regulating valve 81 are respectively connected to the first water tank 101 and the second water tank 103. When the regulating valve 81 is in an open state, the water volume of the first water tank 101 and the second water tank 103 can be balanced, and the temperature difference of the circulating water in the first water tank 101 and the second water tank 103 can be reduced.

[0051] like Figures 1 to 3 As shown, in some embodiments, the regulating branch 8 further includes a two-way pump 82, and the regulating valve 81 is connected between the two-way pump 82 and the first water tank 101, or the regulating valve 81 is connected between the two-way pump 82 and the second water tank 103. By providing the two-way pump 82, the flow direction of the circulating water in the regulating branch 8 can be actively controlled, and the flow rate of the circulating water in the regulating branch 8 can be accelerated, so that the water volume of the first water tank 101 and the second water tank 103 can be quickly balanced.

[0052] like Figures 1 to 3As shown, in some embodiments, the heat pump test platform further includes a first valve group 12, the first valve group 12 includes a first valve 121, a second valve 122 and a third valve 123, wherein the two first valves are installed on both sides of the second water mixing valve 51; the second valve is installed on the second water supply branch 6; the third valve 123 is installed on the second water return branch, and the first valve group 12 is used to control the opening and closing of the heat source supply component. Specifically, during the preparation work before the heat pump test platform is tested and during the test of the air source heat pump on the heat pump test platform, the first valve, the second valve and the third valve 123 need to be closed to close the heat source supply component as a whole; during the test of the water source heat pump on the heat pump test platform, the first valve, the second valve and the third valve 123 need to be opened to enable the heat source supply component to work normally.

[0053] like Figures 1 to 3 As shown, in some embodiments, the heat pump test platform further includes a second valve group 13, the second valve group 13 includes a fourth valve 131, a fifth valve 132 and a sixth valve 133, wherein two fourth valves 131 are installed on both sides of the first water mixing valve 102; the fifth valve 132 is installed on the first water supply branch 2; the sixth valve 133 is installed on the first water return branch 4, the sixth valve 133 is connected between the first radiator 42 and the first water tank 101, and the second valve group 13 is used to control the opening and closing of the cold source supply component. Specifically, during the preparation work before the heat pump test platform is tested, the fourth valve 131, the fifth valve 132 and the sixth valve 133 need to be closed to close the cold source supply component as a whole; during the test of the water source heat pump on the heat pump test platform, the fourth valve 131, the fifth valve 132 and the sixth valve 133 need to be opened to enable the cold source supply component to work normally.

[0054] like Figures 1 to 3 As shown, in some embodiments, the heat pump test platform also includes an equipment compartment 10, and the first mixing water branch 1, the second mixing water branch, the first water tank 101, the second water tank 103, the first water pump 21, the second water pump 61, the first valve group 12 and the second valve group 13 are all located in the equipment compartment 10. Since the valve bodies that need to be operated are all located in the equipment compartment 10, it is convenient for the staff to operate.

[0055] like Figures 1 to 3 As shown, in some embodiments, the equipment compartment 10 is isolated from the test compartment 9. Since the valve bodies that need to be operated are all located in the equipment compartment 10, the number of times the staff enters the test compartment 9 can be reduced, avoiding the staff from disturbing the ambient temperature and humidity in the test compartment 9 during the process of entering and exiting the test compartment 9, and the accuracy of the test results is higher.

[0056] In some embodiments, the first radiator 42 includes a cooling tower. The cooling tower can effectively utilize ambient air for heat exchange, thereby saving energy. The cooling tower has a low cost and is easy to maintain.

[0057] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A heat pump test platform, characterized in that: It includes a heat source supply component and a cold source supply component, and the cold source supply component includes: A first water mixing branch comprises a first water tank, a first water mixing valve and a second water tank, wherein two water inlets of the first water mixing valve are respectively connected to the first water tank and the second water tank; A first water supply branch, comprising a first water pump and a first interface, wherein a water inlet of the first water pump is connected to a water outlet of the first water mixing valve, and a water outlet of the first water pump is connected to the first interface, and the first interface is used to connect to a condenser of the heat pump to be tested, so as to supply water to the condenser at a constant temperature; The first water return branch includes a first radiator and a second interface. The two water outlets of the first radiator are respectively connected to the second interface and the first water tank. The second interface is used to connect to the condenser to draw out the circulating water in the condenser.

2. The heat pump test platform according to claim 1, characterized in that: The heat source supply assembly comprises: A second water mixing branch includes a second water mixing valve, wherein two water inlets of the second water mixing valve are respectively connected to the first water tank and the second water tank; A second water supply branch, comprising a second water pump and a third interface, wherein the water inlet of the second water pump is connected to the water outlet of the second water mixing valve, the water outlet of the second water pump is connected to the third interface, and the second interface is used to be connected to the evaporator of the heat pump to be tested, so as to supply water to the evaporator at a constant temperature; The second water return branch includes a fourth interface, the fourth interface is connected to the second water tank, and the fourth interface is used to connect to the evaporator to lead out the circulating water in the evaporator.

3. The heat pump test platform according to claim 2, characterized in that: Also includes: A test chamber, wherein the first interface, the second interface, the third interface, the fourth interface and the first radiator are all located in the test chamber; The second radiator is installed on the wall of the test chamber.

4. The heat pump test platform according to claim 3, characterized in that: The second radiator includes a fan, an air inlet of the fan is arranged opposite to the first radiator, and an air outlet of the fan is connected to the outside of the test chamber.

5. The heat pump test platform according to claim 1 or 2, characterized in that: It also includes a regulating branch, which includes a regulating valve, and two water outlets of the regulating valve are respectively connected to the first water tank and the second water tank.

6. The heat pump test platform according to claim 5, characterized in that: The regulating branch further includes a two-way pump, and the regulating valve is connected between the two-way pump and the first water tank, or the regulating valve is connected between the two-way pump and the second water tank.

7. The heat pump test platform according to claim 2, characterized in that: Also included is a first valve group, the first valve group comprising: A first valve, wherein two first valves are installed on both sides of the second water mixing valve; a second valve, installed on the second water supply branch; The third valve is installed on the second water return branch.

8. The heat pump test platform according to claim 7, characterized in that: Also included is a second valve group, the second valve group comprising: a fourth valve, wherein two fourth valves are installed on both sides of the first water mixing valve; a fifth valve, installed on the first water supply branch; A sixth valve is installed on the first water return branch, and the sixth valve is connected between the first radiator and the first water tank.

9. The heat pump test platform according to claim 8, characterized in that: It also includes an equipment warehouse, in which the first water mixing branch, the second water mixing branch, the first water tank, the second water tank, the first water pump, the second water pump, the first valve group and the second valve group are all located.

10. The heat pump test platform according to claim 1, characterized in that: The first heat sink includes a cooling tower.

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