Motor cooling and heating system based on refrigerant
By using a gas-liquid separator and a four-way valve to separate the gas-liquid separator and control the storage tank in the motor cooling system, cooling and heating switching is achieved, and the problems of low efficiency and refrigerant leakage in extreme environments are solved, and the reliability and efficiency of the motor are improved.
Patent Information
- Application Number
- CN202422411584.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing motor cooling systems are inefficient in extreme environments, have high risk of refrigerant leakage, and cannot achieve cooling and heating functions at the same time.
A refrigerant-based motor cooling and heating system is designed, and a gas-liquid separator is used to separate the refrigerant liquid reservoir. It combines four-way valves and multiple valves to control the flow of refrigerant to realize cooling and heating switching, and a liquid separator is installed under the main motor to reduce refrigerant residue.
It improves the cooling and heating effect of the motor, reduces the risk of refrigerant leakage, and ensures that the motor operates efficiently within a wide temperature range.
Smart Images
Figure CN223218958U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment, and in particular to a motor cooling and heating system based on refrigerant. Background Art
[0002] Currently, existing motors mainly have active and passive air-cooling systems, water-cooling systems, and refrigerant-based systems. Among them, the air-cooling system has a narrow range of operating environments and the heat dissipation effect is not obvious; the water-cooling system is bulky and the cooling effect is not ideal; the above two systems do not have a heating function. In extremely cold environments, the motor system lubricating oil freezes and the motor cannot start. The refrigerant-based cooling system takes up a large space and is inconvenient to install. The system uses an integrated structure of gas-liquid separator and liquid storage tank, and refrigerant liquid will remain inside the motor, affecting the motor efficiency. In addition, when the motor is stopped, refrigerant will exist inside the motor, which places higher requirements on the sealing of the motor. The refrigerant is easy to leak, the pressure will decrease, and the cooling effect will be affected. Based on this, it is particularly necessary to design a new refrigerant-based motor cooling and heating system. Utility Model Content
[0003] In response to the deficiencies in the existing technology, the purpose of this utility model is to provide a refrigerant-based motor cooling and heating system with a reasonable structural design, easy installation, improved cooling and heating effects, reduced the probability of refrigerant leakage, ensured motor efficiency, strong practicality, and easy to promote and use.
[0004] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a refrigerant-based motor cooling and heating system, including a gas-liquid separator, a first straight-through valve, a compressor, a refrigerant storage tank, a second straight-through valve, a four-way valve, a first expansion valve, a first stop valve, a second expansion valve, a second stop valve, a main motor, a heat exchanger motor, a heat exchanger fan and a heat exchanger coil. The gas-liquid separator and the refrigerant storage tank are respectively connected to the inlet and outlet of the compressor, and the first straight-through valve is installed on the connecting pipe between the gas-liquid separator outlet and the compressor. The outlet of the refrigerant storage tank is connected to the four-way valve through the second straight-through valve, and the four-way valve is also connected to the inlet of the gas-liquid separator; the four-way valve is connected to one end of the heat exchanger coil through a pipeline, the heat exchanger motor is connected to the heat exchanger fan, and the other end of the heat exchanger coil is connected to the refrigerant gas inlet of the main motor through the first stop valve and the second expansion valve in sequence. The first stop valve and the second expansion valve are respectively connected to the first expansion valve and the second stop valve at both ends, and the refrigerant gas outlet of the main motor is connected to the four-way valve.
[0005] Preferably, a liquid separator is placed under the main motor, and the residual liquid refrigerant in the motor will automatically flow into the liquid separator, reducing the impact of the liquid refrigerant in the motor on the motor efficiency.
[0006] The beneficial effects of the utility model are as follows: the device can improve the cooling and heating effects, reduce the probability of refrigerant leakage, ensure the efficiency of the motor, improve the working conditions of the motor, has high reliability, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;
[0008] Figure 1 This is a schematic diagram of the structure of the motor in the cooling state of the utility model;
[0009] Figure 2 This is a structural diagram of the motor in the heating state of the utility model. DETAILED DESCRIPTION
[0010] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0011] Reference Figure 1-2 , this specific embodiment adopts the following technical solutions: a refrigerant-based motor cooling and heating system, including a gas-liquid separator 1, a first straight-through valve 2, a compressor 3, a refrigerant storage tank 4, a second straight-through valve 5, a four-way valve 6, a first expansion valve 7, a first stop valve 8, a second expansion valve 9, a second stop valve 10, a main motor 11, a heat exchanger motor 12, a heat exchanger fan 13 and a heat exchanger coil 14, the gas-liquid separator 1 and the refrigerant storage tank 4 are respectively connected to the inlet and outlet of the compressor 3, and the first straight-through valve 2 is installed on the connecting pipe between the outlet of the gas-liquid separator 1 and the compressor 3. Through valve 2, the outlet of the refrigerant storage tank 4 is connected to the four-way valve 6 through the second straight-through valve 5, and the four-way valve 6 is also connected to the inlet of the gas-liquid separator 1; the four-way valve 6 is connected to one end of the heat exchanger coil 14 through a pipeline, the heat exchanger motor 12 is connected to the heat exchanger fan 13, and the other end of the heat exchanger coil 14 is connected to the refrigerant gas inlet of the main motor 11 through the first stop valve 8 and the second expansion valve 9 in sequence. The first stop valve 8 and the second expansion valve 9 are connected to the first expansion valve 7 and the second stop valve 10 at both ends respectively, and the refrigerant gas outlet of the main motor 11 is connected to the four-way valve 6.
[0012] It is worth noting that a liquid separator is placed under the main motor 11. In the cooling state, the refrigerant gas outlet of the main motor 11 directly serves as the gas inlet of the liquid separator, and the liquid mixed into the liquid separator then enters the compressor 3, so that the cooling effect of the main motor 11 and the oil lubrication effect of the compressor 3 are better. The liquid separator is set under the main motor 11, and the residual liquid refrigerant in the main motor 11 will automatically flow into the liquid separator, reducing the impact of the liquid refrigerant in the motor on the motor efficiency.
[0013] In this embodiment, a four-way valve 6 is added in the middle of the system. The controller can automatically switch between cooling and heating state according to the internal temperature of the motor. When the motor is in cooling state, the flow direction of the refrigerant is as follows: Figure 1 , from the compressor 3 through the refrigerant storage tank 4, the second straight-through valve 5 into the four-way valve 6, through the four-way valve 6 through the heat exchanger coil 14, the first stop valve 8, the second expansion valve 9 into the refrigerant gas inlet of the main motor 11, and then from the refrigerant gas outlet of the main motor 11 through the four-way valve 6, the gas-liquid separator 1, the first straight-through valve 2 to the compressor 3; when the motor is in the heating state, the flow direction of the refrigerant is as follows Figure 2 , from compressor 3, through refrigerant storage tank 4, second straight-through valve 5, into four-way valve 6, through four-way valve 6 to the refrigerant gas outlet of main motor 11, and then from the refrigerant gas inlet of main motor 11, through second stop valve 10, first expansion valve 7, heat exchanger coil 14, into four-way valve 6, through four-way valve 6, gas-liquid separator 1, first straight-through valve 2 to compressor 3. This system places gas-liquid separator 1 and refrigerant storage tank 4 separately at the inlet and outlet of compressor 3, and adds first straight-through valve 2 and second straight-through valve 5 to gas-liquid separator 1 and refrigerant storage tank 4, respectively. When main motor 11 is stopped, compressor 3 pumps refrigerant into refrigerant storage tank 4, and first straight-through valve 2 and second straight-through valve 5 are closed. At this time, the pressure inside main motor 11 is not much different from the external pressure, which can reduce the probability of refrigerant leakage from other components.
[0014] In this specific embodiment, the refrigerant directly cools or heats the motor to improve the cooling and heating effects. The refrigerant has high cooling efficiency and is not prone to leakage. This system enables ordinary motors to be used in environments of -40 to +120°C, greatly improving the motor's operating conditions, ensuring motor efficiency, and has broad market application prospects.
[0015] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. A motor cooling and heating system based on refrigerant, characterized in that: The invention comprises a gas-liquid separator (1), a first straight-through valve (2), a compressor (3), a refrigerant liquid storage tank (4), a second straight-through valve (5), a four-way valve (6), a first expansion valve (7), a first stop valve (8), a second expansion valve (9), a second stop valve (10), a main motor (11), a heat exchanger motor (12), a heat exchanger fan (13) and a heat exchanger coil (14); the gas-liquid separator (1) and the refrigerant liquid storage tank (4) are respectively connected to the inlet and outlet of the compressor (3); the first straight-through valve (2) is installed on the connecting pipe between the outlet of the gas-liquid separator (1) and the compressor (3); the outlet of the refrigerant liquid storage tank (4) is connected to the inlet and outlet of the compressor (3); The four-way valve (6) is connected to the inlet of the gas-liquid separator (1) through the second straight-through valve (5); the four-way valve (6) is also connected to the inlet of the gas-liquid separator (1); the four-way valve (6) is connected to one end of the heat exchanger coil (14) through a pipeline, the heat exchanger motor (12) is connected to the heat exchanger fan (13), and the other end of the heat exchanger coil (14) is connected to the refrigerant gas inlet of the main motor (11) through the first stop valve (8) and the second expansion valve (9) in sequence. The first stop valve (8) and the second expansion valve (9) are connected to the first expansion valve (7) and the second stop valve (10) at both ends respectively, and the refrigerant gas outlet of the main motor (11) is connected to the four-way valve (6).
2. The refrigerant-based motor cooling and heating system according to claim 1, characterized in that: A liquid distributor is placed below the main motor (11).