Device for cooling motor through refrigerant oil cooler

Abstract

The utility model discloses a device for cooling a motor through a refrigerant oil cooler, which belongs to the technical field of automobiles and comprises an electric compressor, a gas-liquid separator is arranged on the lower side of the electric compressor, an in-vehicle condenser is arranged on one side of the electric compressor, a first switch valve is arranged between the in-vehicle condenser and the electric compressor, and a second switch valve is arranged between the in-vehicle condenser and the electric compressor. An electric compressor is arranged on the upper side of the automobile interior condenser, an automobile exterior condenser is arranged on the upper side of the automobile interior condenser, a second switch valve is arranged between the automobile exterior condenser and the electric compressor, one side of the automobile exterior condenser and one side of the automobile interior condenser are connected with an expansion valve through a pipeline, an oil cooler is arranged on the lower side of the expansion valve, and a motor is arranged on one side of the oil cooler. When the motor is cooled, a refrigerant sequentially passes through the electric compressor, the external condenser, the expansion valve, the oil cooler and the gas-liquid separator, and the coolant loop cools the motor for the oil pump, the oil cooler and the motor, so that the working efficiency of the motor is improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and particularly relates to a device for cooling a motor through a refrigerant oil cooler. Background Art

[0002] An automobile is a vehicle that has its own power to be driven, does not need to rely on a track or power supply, and can travel motorized. Generally speaking, vehicles driven by their own mechanical energy are commonly called automobiles.

[0003] Chinese Patent Application No. 2007201713158 discloses an automobile air conditioner and cooling system, including an air conditioner system and a cooling system. The air conditioner system includes an electric compressor, a four-way reversing valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger, and a gas-liquid separator, which form a loop. The cooling system includes an electric water pump, a first heating element, a second heating element, a third heating element, an outdoor heat exchanger, and a radiator, which also form a loop. The characteristic is that: the air conditioner system and the cooling system share an outdoor heat exchanger. In the summer working condition of this air conditioner and cooling system, the heat in the air conditioner system is transferred to the cooling system through the outdoor heat exchanger, and the radiator in the cooling system dissipates the heat into the atmosphere, thereby reducing the power consumption of the compressor in the air conditioner system, increasing the refrigeration capacity, and improving the working ability of the system; in winter, the heat generated by each heating element is transferred to the heating cycle of the air conditioner system, so that the heat is utilized, energy is saved, and emissions are reduced.

[0004] The above-mentioned disclosed patent adopts a series connection method for the first heating element, the second heating element, and the third heating element to achieve the purpose of heat dissipation through the radiator. When dissipating heat, the outdoor heat exchanger acts as a condenser, which undoubtedly makes the radiator need to be very large in volume and operate at full power. At the same time, the above method is not feasible for new energy vehicles because the suitable working temperatures of heating elements such as batteries, electronic controls, and motors are different. Content of the Utility Model

[0005] To solve the problems raised in the above background art, the utility model provides a device for cooling a motor through a refrigerant oil cooler, which has the characteristics of good cooling and temperature reduction for the motor and can utilize the waste heat of the motor.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A device for cooling a motor through a refrigerant oil cooler, including an electric compressor, a gas-liquid separator is arranged below the electric compressor, a vehicle condenser is arranged on one side of the electric compressor, a switch valve I is arranged between the vehicle condenser and the electric compressor, an external condenser is arranged above the vehicle condenser, a switch valve II is arranged between the external condenser and the electric compressor, an expansion valve is connected to the external condenser and the vehicle condenser through a pipeline on one side, an oil cooler is arranged below the expansion valve, a motor is arranged on one side of the oil cooler, and an oil pump is arranged between the motor and the oil cooler.

[0007] Preferably, the external condenser and the vehicle condenser are arranged in parallel on one side of the electric compressor, and the external condenser and the vehicle condenser are connected to the expansion valve through a pipeline.

[0008] Preferably, when the switch valve II is closed and the switch valve I is opened, the refrigerant passes through the vehicle condenser, and when the switch valve I is closed and the switch valve II is opened, the refrigerant passes through the external condenser.

[0009] Preferably, the oil cooler is connected to the gas-liquid separator, the motor is connected to the oil cooler, the motor is connected to the oil pump, and the oil pump is connected to the oil cooler through pipelines.

[0010] Compared with the prior art, the beneficial effects of the present utility model are:

[0011] 1. When cooling the motor by setting the electric compressor in the present utility model, the refrigerant sequentially passes through the electric compressor, the external condenser, the expansion valve, the oil cooler and the gas-liquid separator, and the coolant circuit is the oil pump, the oil cooler and the motor to cool the motor, thereby improving the working efficiency of the motor and prolonging the service life of the motor.

[0012] 2. By setting the vehicle condenser in the present utility model, when heating the vehicle interior in winter, the refrigerant circuit sequentially passes through the electric compressor, the vehicle condenser, the expansion valve, the oil cooler and the gas-liquid separator, and the coolant circuit is the oil pump, the oil cooler and the motor to cool the motor, and at the same time, the waste heat of the motor can be used to heat the vehicle interior, thereby reducing the power consumption. Description of the Drawings

[0013] Figure 1 It is a three-dimensional view of the present utility model;

[0014] Figure 2 It is a right three-dimensional view of the present utility model;

[0015] Figure 3 It is a three-dimensional view of the oil cooler of the present utility model;

[0016] In the figure: 1. Gas-liquid separator; 2. Electric compressor; 3. First switching valve; 4. Second switching valve; 5. Condenser outside the vehicle; 6. Condenser inside the vehicle; 7. Motor; 8. Expansion valve; 9. Oil cooler; 10. Oil pump. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-3 , the present invention provides the following technical solutions: A device for cooling a motor through a refrigerant oil cooler, including an electric compressor 2, a gas-liquid separator 1 is arranged below the electric compressor 2, an in-vehicle condenser 6 is arranged on one side of the electric compressor 2, a first switching valve 3 is arranged between the in-vehicle condenser 6 and the electric compressor 2, an out-vehicle condenser 5 is arranged above the in-vehicle condenser 6, a second switching valve 4 is arranged between the out-vehicle condenser 5 and the electric compressor 2, an expansion valve 8 is connected to the out-vehicle condenser 5 and the in-vehicle condenser 6 through a pipeline on one side, an oil cooler 9 is arranged below the expansion valve 8, a motor 7 is arranged on one side of the oil cooler 9, and an oil pump 10 is arranged between the motor 7 and the oil cooler 9.

[0019] Specifically, the out-vehicle condenser 5 and the in-vehicle condenser 6 are arranged in parallel on one side of the electric compressor 2, and the out-vehicle condenser 5 and the in-vehicle condenser 6 are connected to the expansion valve 8 through a pipeline.

[0020] By adopting the above technical solution, the out-vehicle condenser 5 and the in-vehicle condenser 6 are arranged in parallel on one side of the electric compressor 2 to realize the use in different situations of heating or not heating in the vehicle.

[0021] Specifically, when the second switching valve 4 is closed and the first switching valve 3 is opened, the refrigerant passes through the in-vehicle condenser 6, and when the first switching valve 3 is closed and the second switching valve 4 is opened, the refrigerant passes through the out-vehicle condenser 5.

[0022] By adopting the above technical solution, when heating is required in the vehicle, the refrigerant passes through the in-vehicle condenser 6, and when heating is not required, the refrigerant passes through the out-vehicle condenser 5.

[0023] Specifically, the oil cooler 9 is connected to the gas-liquid separator 1, the motor 7 is connected to the oil cooler 9, the motor 7 is connected to the oil pump 10, and the oil pump 10 is connected to the oil cooler 9 through pipelines.

[0024] By adopting the above technical solution, the refrigerant can flow between the oil cooler 9 and the gas-liquid separator 1, between the motor 7 and the oil cooler 9, between the motor 7 and the oil pump 10, and between the oil pump 10 and the oil cooler 9.

[0025] The working principle and usage process of the present utility model: When the device for cooling the motor 7 by the refrigerant oil cooler 9 is in use, the device is installed at a suitable position. When cooling the motor 7 by setting the electric compressor 2, the refrigerant sequentially passes through the electric compressor 2, the external condenser 5, the expansion valve 8, the oil cooler 9 and the gas-liquid separator 1. The coolant circuit is the oil pump 10, the oil cooler 9 and the motor 7 to cool the motor 7, thereby improving the working efficiency of the motor 7 and prolonging the service life of the motor 7. By setting the internal condenser 6, when heating the vehicle interior in winter, the refrigerant circuit sequentially passes through the electric compressor 2, the internal condenser 6, the expansion valve 8, the oil cooler 9 and the gas-liquid separator 1. The coolant circuit is the oil pump 10, the oil cooler 9 and the motor 7 to cool the motor 7. At the same time, the waste heat of the motor 7 can be used to heat the vehicle interior, thereby reducing power consumption.

[0026] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for cooling an electric motor through a refrigerant oil cooler, comprising an electric compressor (2), characterized in that: A gas-liquid separator (1) is provided below the electric compressor (2). An in-vehicle condenser (6) is provided on one side of the electric compressor (2). A first switch valve (3) is provided between the in-vehicle condenser (6) and the electric compressor (2). An out-of-vehicle condenser (5) is provided above the in-vehicle condenser (6). A second switch valve (4) is provided between the out-of-vehicle condenser (5) and the electric compressor (2). An expansion valve (8) is connected to one side of the out-of-vehicle condenser (5) and the in-vehicle condenser (6) through a pipeline. An oil cooler (9) is provided below the expansion valve (8). An electric motor (7) is provided on one side of the oil cooler (9). A fuel pump (10) is provided between the electric motor (7) and the oil cooler (9).

2. The device for cooling an electric motor through a refrigerant oil cooler according to claim 1, characterized in that: The out-of-vehicle condenser (5) and the in-vehicle condenser (6) are arranged in parallel on one side of the electric compressor (2), and the out-of-vehicle condenser (5) and the in-vehicle condenser (6) are connected to the expansion valve (8) through a pipeline.

3. The device for cooling a motor through a refrigerant oil cooler according to claim 1, wherein: When the second switch valve (4) is closed, the first switch valve (3) is opened, and the refrigerant passes through the in-vehicle condenser (6). When the first switch valve (3) is closed, the second switch valve (4) is opened, and the refrigerant passes through the out-of-vehicle condenser (5).

4. A device for cooling an electric motor through a refrigerant oil cooler, characterized in that: The oil cooler (9) is connected to the gas-liquid separator (1), the electric motor (7) is connected to the oil cooler (9), the electric motor (7) is connected to the fuel pump (10), and the fuel pump (10) is connected to the oil cooler (9) through pipelines.

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