Single-compressor controlled double-temperature oil cooling testing machine

Abstract

The utility model discloses a single compressor control double temperature oil cooling test machine, including refrigeration subassembly, one side of refrigeration subassembly is connected with first heat exchange subassembly, second heat exchange subassembly, and one side of first heat exchange subassembly and second heat exchange subassembly all is equipped with heat cycle assembly, and refrigeration subassembly includes compressor, condenser, and the liquid outlet of condenser is connected with first shunt spare, the first cold side import on first heat exchanger is connected with one end of first shunt spare through first connecting pipe, and the first cold side export on first heat exchanger is connected with the return gas port of compressor, second heat exchange subassembly includes second heat exchanger, and the second cold side import on second heat exchanger is connected with the other end of first shunt spare through second connecting pipe, and the second cold side export on second heat exchanger is connected with the return gas port of compressor. Utilize a compressor to carry out temperature regulation to two heat exchange assemblies simultaneously, make this test machine can provide two different oil temperature in the same experiment process, satisfy the test demand of oil cooling motor.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a single-compressor controlled dual-temperature oil-cooled testing machine. Background Technology

[0002] An oil cooler is a refrigeration system. According to refrigeration system principles, low-temperature, low-pressure liquid refrigerant exchanges heat with oil outside the evaporator's refrigeration pipes. The low-temperature, low-pressure liquid refrigerant absorbs heat from the oil and evaporates into a low-temperature, low-pressure gaseous refrigerant. During evaporation, the refrigerant's temperature and pressure remain constant. This low-temperature, low-pressure gaseous refrigerant enters the compressor, where it is compressed into a high-temperature, high-pressure gaseous refrigerant before being discharged. It then enters the condenser, where it exchanges heat with the surrounding air. The high-temperature, high-pressure gaseous refrigerant exchanges heat with the relatively low-temperature air drawn through the condenser by the fan, causing the air temperature to rise. The refrigerant releases heat and becomes a medium-temperature, high-pressure liquid. The high pressure remains constant during the process, and then the refrigerant enters the expansion valve for throttling. Throttling is a process of rapid pressure and temperature reduction, turning the refrigerant into a low-temperature, low-pressure liquid. After this process, the refrigerant enters the evaporator for heat exchange and evaporation, thus completing the entire process of the refrigeration system. After the oil chiller is manufactured, it is necessary to test whether the oil chiller can operate normally and stably. A set of testing equipment needs to be set up to monitor various data of the oil chiller in real time to detect whether the oil chiller can operate normally. Based on the existing technology with announcement number CN105698421A, although it can achieve high and low temperature testing, it has at least the following problems: it only has a single temperature during the experiment, such as high temperature or low temperature, and does not have the ability to handle high and low temperatures simultaneously. Utility Model Content

[0003] The purpose of this invention is to provide a single-compressor controlled dual-temperature oil-cooled testing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a single-compressor controlled dual-temperature oil-cooled testing machine, comprising a refrigeration component, one side of which is connected to a first heat exchange component and a second heat exchange component, and both the first heat exchange component and the second heat exchange component have a heat circulation component on the side away from the refrigeration component; the refrigeration component includes a compressor and a condenser connected to the outlet of the compressor, the liquid outlet of the condenser being connected to a first flow divider; the first heat exchange component includes a first heat exchanger, a first cold-side inlet on the first heat exchanger being connected to one end of the first flow divider through a first connecting pipe, and a first cold-side outlet on the first heat exchanger being connected to the return port of the compressor; the second heat exchange component includes a second heat exchanger, a second cold-side inlet on the second heat exchanger being connected to the other end of the first flow divider through a second connecting pipe, and a second cold-side outlet on the second heat exchanger being connected to the return port of the compressor.

[0005] As a preferred technical solution of this utility model: the first connecting pipe is provided with a first solenoid valve and a first electronic expansion valve, and the second connecting pipe is provided with a second solenoid valve and a second electronic expansion valve.

[0006] As a preferred technical solution of this utility model: the heat circulation assembly includes a water tank and a heater installed on the water tank. The water tank is connected to the hot side inlet of the first heat exchanger and the second heat exchanger through a liquid inlet pipe, and the water tank is connected to the hot side outlet of the first heat exchanger and the second heat exchanger through a liquid outlet pipe.

[0007] As a preferred technical solution of this utility model: the inlet pipe is also equipped with a circulation pump, and the circulation pump causes the oil to circulate between the water tank and the heat exchanger.

[0008] As a preferred technical solution of this utility model: a liquid level sensor and a temperature sensor are also provided on the outside of the water tank.

[0009] As a preferred technical solution of this utility model: a branch line is provided on the pipeline between the air outlet of the compressor and the condenser, and the other end of the branch line is connected to the air return port of the compressor, and a pressure regulating valve is provided on the branch line.

[0010] As a preferred technical solution of this utility model: a liquid storage tank is also provided on the pipeline between the liquid outlet of the condenser and the first diverter.

[0011] As a preferred technical solution of this utility model: a second diverter is further provided on the pipeline between the compressor and the condenser. The upper end of the second diverter is connected to the outlet of the compressor, the lower end of the second diverter is connected to the condenser, and the other end of the second diverter is connected to the branch line.

[0012] As a preferred technical solution of this utility model: a third diverter is provided at the end of the branch line away from the second diverter; wherein, the upper end of the third diverter is connected to the return port of the compressor, and the lower end of the third diverter is connected to the second cold side outlet of the second heat exchanger through a third connecting pipe.

[0013] As a preferred technical solution of this utility model: the first diverter, the second diverter and the third diverter are tee pipes.

[0014] The beneficial effects of this utility model using the above technical solution are as follows: Since a first heat exchange component and a second heat exchange component are provided on one side of the refrigeration component, and a heat circulation component is installed on each heat exchange component, when the first heat exchange component exchanges heat with the refrigeration component, the temperature of the oil in the heat circulation component on one side of the first heat exchange component can be adjusted; at the same time, when the second heat exchange component exchanges heat with the refrigeration component, the temperature of the oil in the heat circulation component on one side of the second heat exchange component can be adjusted. Based on this, a single compressor can be used to simultaneously regulate the temperature of the two heat exchange components, enabling the testing machine to provide at least two different oil temperatures during the same experiment. For example, the first heat exchange component can provide a high temperature to the heat circulation component on one side, and the second heat exchange component can provide a low temperature to the heat circulation component on one side. Therefore, the device can simultaneously provide high and low temperature conditions to meet the testing requirements of oil-cooled motors. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the main structure of the refrigeration component of this utility model; Figure 3 This is a schematic diagram of the main structure of the first heat exchange component of this utility model; Figure 4 This is a schematic diagram of the main structure of the second heat exchange component of this utility model; Figure 5 This is a schematic diagram of the main structure of the thermal cycling component of this utility model.

[0016] In the diagram: 1. Refrigeration assembly; 10. Compressor; 11. Pressure regulating valve; 12. Condenser; 13. Liquid receiver; 14. Branch line; 15. First branch component; 16. Second branch component; 17. Third branch component; 2. First heat exchange assembly; 20. First heat exchanger; 21. First cold side inlet; 22. First cold side outlet; 23. Hot side inlet; 24. Hot side outlet; 25. First electronic expansion valve; 26. First connecting pipe; 27. First solenoid valve; 3. Second heat exchange assembly; 30. Second heat exchanger; 31. Second cold side inlet; 32. Second cold side outlet; 33. Second solenoid valve; 34. Second electronic expansion valve; 35. Second connecting pipe; 36. Third connecting pipe; 4. Thermal circulation assembly; 40. Water tank; 41. Liquid level sensor; 42. Temperature sensor; 43. Heater; 44. Liquid outlet pipe; 45. Circulation pump; 46. Liquid inlet pipe. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0018] Please see Figure 1-5This utility model provides an embodiment of a single-compressor controlled dual-temperature oil-cooled testing machine, comprising a refrigeration component 1. One side of the refrigeration component 1 is connected to a first heat exchange component 2 and a second heat exchange component 3, and both the first heat exchange component 2 and the second heat exchange component 3 are provided with a heat circulation component 4 on the side away from the refrigeration component 1. The refrigeration component 1 includes a compressor 10 and a condenser 12 connected to the outlet of the compressor 10. The liquid outlet of the condenser 12 is connected to a first flow divider 15. The first heat exchange component 2 includes a first heat exchanger 20. The first cold-side inlet 21 on the first heat exchanger 20 is connected to one end of the first flow divider 15 through a first connecting pipe 26, and the first cold-side outlet 22 on the first heat exchanger 20 is connected to the return port of the compressor 10; the second heat exchange assembly 3 includes a second heat exchanger 30, the second cold-side inlet 31 on the second heat exchanger 30 is connected to the other end of the first flow divider 15 through a second connecting pipe 35, and the second cold-side outlet 32 ​​on the second heat exchanger 30 is connected to the return port of the compressor 10.

[0019] In summary, since a first heat exchange component 2 and a second heat exchange component 3 are simultaneously provided on one side of the refrigeration component 1, and each heat exchange component is equipped with a heat circulation component 4, when the first heat exchange component 2 exchanges heat with the refrigeration component 1, the temperature of the oil in the heat circulation component 4 on the side of the first heat exchange component 2 can be adjusted; simultaneously, when the second heat exchange component 3 exchanges heat with the refrigeration component 1, the temperature of the oil in the heat circulation component 4 on the side of the second heat exchange component 3 can be adjusted. Based on this, a single compressor 10 can be used to simultaneously regulate the temperature of both heat exchange components, enabling the testing machine to provide at least two different oil temperatures during the same experiment. For example, the first heat exchange component 2 can provide a high temperature to the heat circulation component 4 on its side, and the second heat exchange component 3 can provide a low temperature to the heat circulation component 4 on its side. Therefore, the equipment can simultaneously provide high and low temperature conditions to meet the testing requirements of oil-cooled motors.

[0020] Furthermore, the first connecting pipe 26 is equipped with a first solenoid valve 27 and a first electronic expansion valve 25, and the second connecting pipe 35 is equipped with a second solenoid valve 33 and a second electronic expansion valve 34. The working principle of each solenoid valve and the electronic expansion valve is as follows: Taking the working process of the first heat exchange component 2 as an example: by controlling or closing the opening degree of the first solenoid valve 27 and the first electronic expansion valve 25, the flow rate of refrigerant entering the first heat exchanger 20 is controlled, thereby controlling the working temperature of the first heat exchanger 20 to achieve temperature regulation, so that the device can achieve the coexistence of high and low temperatures.

[0021] The specific structure of the heat circulation component 4 is as follows: The heat circulation component 4 includes a water tank 40 and a heater 43 installed on the water tank 40. The water tank 40 is connected to the hot-side inlet 23 of the first heat exchanger 20 and the second heat exchanger 30 through a liquid inlet pipe 46, and the water tank 40 is connected to the hot-side outlet 24 of the first heat exchanger 20 and the second heat exchanger 30 through a liquid outlet pipe 44. Furthermore, a circulation pump 45 is provided on the liquid inlet pipe 46, and the circulation pump 45 causes the oil to circulate between the water tank 40 and the heat exchangers. Even further, a liquid level sensor 41 and a temperature sensor 42 are provided on the outside of the water tank 40.

[0022] In summary, the temperatures of the water tank 40 on one side of the first heat exchange component 2 and the water tank 40 on the other side of the second heat exchange component 3 are preset. The compressor 10 absorbs low-temperature, low-pressure gas, which is discharged into the condenser 12 for heat release and condensation. After flowing out of the condenser 12, the gas flows to the first heat exchange component 2 and the second heat exchange component 3 respectively. Each heat exchange component has a corresponding solenoid valve and electronic expansion valve to enter the corresponding heat exchanger. In the heat exchanger, the gas evaporates and absorbs heat. The evaporated refrigerant gas enters the suction end of the compressor 10 for compression, completing one cycle. During this process, the circulating pump 45 pumps oil into the heat exchanger. The oil after the heat exchanger transfers the cooling capacity to the corresponding water tank 40. Finally, the customer can extract oil at the required temperature from the two water tanks 40. In addition, the oil inside the water tank 40 can be heated by the heater 43 to make the temperature control range between high and low temperatures of the testing machine wider.

[0023] Based on the above solution, since a branch line 14 is provided on the pipeline between the outlet of the compressor 10 and the condenser 12, and the other end of the branch line 14 is connected to the return port of the compressor 10, and a pressure regulating valve 11 is provided on the branch line 14, the outlet and return port of the compressor 10 can be connected using the branch line 14. Then, by opening and closing the pressure regulating valve 11, the outlet and return port of the compressor 10 can be directly connected or closed, thereby stabilizing the intake pressure of the compressor 10 and reducing the surge phenomenon of the compressor 10. In addition, this device can simultaneously and stably provide a cold source for two heat exchange components using one compressor 10.

[0024] The specific pipeline connections are as follows: A second branching component 16 is also provided on the pipeline between the compressor 10 and the condenser 12. The upper end of the second branching component 16 is connected to the outlet of the compressor 10, the lower end of the second branching component 16 is connected to the condenser 12, and the other end of the second branching component 16 is connected to the branch line 14. A third branching component 17 is also provided at the end of the branch line 14 away from the second branching component 16. The upper end of the third branching component 17 is connected to the return port of the compressor 10, and the lower end of the third branching component 17 is connected to the second cold side outlet 32 ​​on the second heat exchanger 30 through a third connecting pipe 36. The first branching component 15, the second branching component 16, and the third branching component 17 are three-way pipes.

[0025] In summary, when the cooling capacity demand of both water tanks 40 is very small, in order to protect the compressor 10, when the suction pressure of the compressor 10 is lower than the set pressure of the pressure regulating valve 11, the pressure regulating valve 11 opens to provide suction capacity for the compressor 10, thereby reducing the surge phenomenon of the compressor 10.

[0026] Furthermore, since a liquid storage tank 13 is also provided on the pipeline between the liquid outlet of the condenser 12 and the first diverter 15, a constant cold source can be provided for the two heat exchange components.

[0027] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A single-compressor controlled dual-temperature oil-cooled testing machine, characterized in that: It includes a refrigeration component (1), one side of which is connected to a first heat exchange component (2) and a second heat exchange component (3), and both the first heat exchange component (2) and the second heat exchange component (3) are provided with a heat circulation component (4) on the side away from the refrigeration component (1). The refrigeration assembly (1) includes a compressor (10) and a condenser (12) connected to the outlet of the compressor (10). The liquid outlet of the condenser (12) is connected to a first diverter (15). The first heat exchange assembly (2) includes a first heat exchanger (20), a first cold side inlet (21) provided on the first heat exchanger (20) is connected to one end of the first flow divider (15) through a first connecting pipe (26), and a first cold side outlet (22) provided on the first heat exchanger (20) is connected to the return port of the compressor (10). The second heat exchange assembly (3) includes a second heat exchanger (30), a second cold side inlet (31) provided on the second heat exchanger (30) is connected to the other end of the first diverter (15) through a second connecting pipe (35), and a second cold side outlet (32) provided on the second heat exchanger (30) is connected to the return port of the compressor (10).

2. The single-compressor controlled dual-temperature oil-cooled testing machine according to claim 1, characterized in that: The first connecting pipe (26) is provided with a first solenoid valve (27) and a first electronic expansion valve (25), and the second connecting pipe (35) is provided with a second solenoid valve (33) and a second electronic expansion valve (34).

3. The single-compressor controlled dual-temperature oil-cooled testing machine according to claim 2, characterized in that: The heat circulation assembly (4) includes a water tank (40) and a heater (43) installed on the water tank (40). The water tank (40) is connected to the hot side inlet (23) of the first heat exchanger (20) and the second heat exchanger (30) through a liquid inlet pipe (46). The water tank (40) is connected to the hot side outlet (24) of the first heat exchanger (20) and the second heat exchanger (30) through a liquid outlet pipe (44).

4. The single-compressor controlled dual-temperature oil-cooled testing machine according to claim 3, characterized in that: The inlet pipe (46) is also equipped with a circulation pump (45), which causes the oil to circulate between the water tank (40) and the heat exchanger.

5. A single-compressor controlled dual-temperature oil-cooled testing machine according to claim 4, characterized in that: The water tank (40) is also equipped with a liquid level sensor (41) and a temperature sensor (42) on its outside.

6. A single-compressor controlled dual-temperature oil-cooled testing machine according to any one of claims 1-5, characterized in that: A branch line (14) is provided on the pipeline between the outlet of the compressor (10) and the condenser (12), and the other end of the branch line (14) is connected to the return port of the compressor (10), and a pressure regulating valve (11) is provided on the branch line (14).

7. A single-compressor controlled dual-temperature oil-cooled testing machine according to claim 6, characterized in that: A liquid storage tank (13) is also provided on the pipeline between the liquid outlet of the condenser (12) and the first diverter (15).

8. A single-compressor controlled dual-temperature oil-cooled testing machine according to claim 7, characterized in that: A second diverter (16) is also provided on the pipeline between the compressor (10) and the condenser (12). The upper end of the second diverter (16) is connected to the outlet of the compressor (10), the lower end of the second diverter (16) is connected to the condenser (12), and the other end of the second diverter (16) is connected to the branch line (14).

9. A single-compressor controlled dual-temperature oil-cooled testing machine according to claim 8, characterized in that: The branch line (14) is further provided with a third branch (17) at the end away from the second branch (16); wherein the upper end of the third branch (17) is connected to the return port of the compressor (10), and the lower end of the third branch (17) is connected to the second cold side outlet (32) on the second heat exchanger (30) through a third connecting pipe (36).

10. A single-compressor controlled dual-temperature oil-cooled testing machine according to claim 9, characterized in that: The first diverter (15), the second diverter (16) and the third diverter (17) are tee pipes.

Images