Water pump motor cooling system

Abstract

The utility model belongs to the technical field of motor cooling, and particularly relates to a water pump motor cooling system which comprises a liquid delivery pump and a motor driving the liquid delivery pump, the motor is provided with a cooling system, a shell of the motor is provided with a cooling jacket, and a water inlet pipe or a water outlet pipe of the liquid delivery pump is provided with a heat exchanger. A pipeline of the cooling system is connected with the heat exchanger and a cooling jacket of the motor, a cooling medium in the cooling system forms cooling circulation between the heat exchanger and the cooling jacket of the motor, and a conveying medium of the liquid conveying pump is used for cooling the cooling medium in the cooling system. Extra energy consumption of a heat dissipation fan in a traditional water-cooling heat dissipation system is avoided, and therefore energy consumption of the whole vehicle is obviously reduced. And the traditional gas-liquid heat exchange is optimized into liquid-liquid heat exchange, so that the heat exchange efficiency and the heat dissipation effect are greatly improved.

Description

Technical Field

[0001] The utility model relates to a water pump motor cooling system, belonging to the technical field of motor cooling. Background Art

[0002] Heat dissipation from water pump motors, particularly those in new energy sprinkler trucks, is crucial for ensuring proper operation and extending their service life. Conventional cooling methods for new energy sprinkler truck water pumps transfer heat from the pump motor to a water-cooling system, creating a closed loop. As the cooling medium flows through a cooler equipped with heat sinks or heat pipes, the cooler's cooling fan accelerates heat dissipation. However, these disadvantages include: 1. Increased energy consumption: New energy sprinkler trucks rely on batteries for power, while conventional water-cooling systems require additional power to drive the cooling fan, increasing overall vehicle energy consumption. This is particularly critical for new energy vehicles focused on energy efficiency and range. 2. Poor heat dissipation: Using a cooling fan to accelerate heat dissipation from the cooler involves heat conduction between liquid and air, resulting in inefficient heat transfer. Furthermore, over time, the gaps between the heat sink fins can become clogged, and the surfaces of the fins or heat pipes can become covered with dust and other impurities (such as flocculent matter), impairing heat dissipation. 3. High noise levels: The drive motor drives the cooling fan at high speed, generating noise. 4. Large size: Installing the drive motor and cooling fan takes up a lot of space. Utility Model Content

[0003] In view of the above deficiencies in the existing technology, the technical problem to be solved by the present invention is to provide a water pump motor cooling system, which provides a new solution for the heat dissipation of the water pump motor of the new energy sprinkler truck through a more efficient and energy-saving heat dissipation method.

[0004] The water pump motor cooling system described in the utility model includes a liquid delivery pump and a motor driving the pump. The motor is equipped with a cooling system, a cooling jacket is provided on the motor housing, a heat exchanger is provided on the water inlet pipe or the discharge pipe of the liquid delivery pump, and the cooling system pipeline connects the heat exchanger and the cooling jacket of the motor. The cooling medium in the cooling system forms a cooling cycle between the heat exchanger and the cooling jacket of the motor, and the delivery medium of the liquid delivery pump is used to cool the cooling medium in the cooling system. A gas-liquid separator is also provided on the cooling system pipeline to separate the gas and liquid in the system, thereby improving heat exchange efficiency and ensuring normal operation of the system.

[0005] Wherein, the pipeline of the cooling system is also connected to the cooling pipeline in the motor control box, and cools the motor control box at the same time.

[0006] Preferably, the cooling jacket on the motor housing, the cooling pipeline in the motor control box, and the gas-liquid separator are connected in series.

[0007] The utility model also includes a cooling medium box, the bottom of which is connected to the cooling system's piping. Following the cooling cycle, the cooling medium box is positioned after the gas-liquid separator, with the top of the gas-liquid separator connected to the top of the cooling medium box via piping. The cooling medium box not only adds coolant to the system but also serves as a "second gas-liquid separator." Water vapor with droplets at the top of the gas-liquid separator enters the top of the cooling medium box through piping at the top of the gas-liquid separator. The droplets fall to the bottom of the cooling medium box and return to the cooling system, while the gas accumulates at the top of the cooling medium box.

[0008] One form of the heat exchanger is that the heat exchanger includes a heat exchange sleeve mounted on a water inlet pipe or a drain pipe, a heat exchange cavity is formed between the heat exchange sleeve and the water inlet pipe or the drain pipe, and the heat exchange cavity is connected to a cooling medium inlet and a cooling medium outlet.

[0009] Another form of the heat exchanger is that the heat exchanger includes a heat exchange coil located in a water inlet pipe or a drain pipe, and the heat exchange coil is connected to a cooling medium inlet and a cooling medium outlet.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. High efficiency and energy saving: This utility model utilizes the liquid delivery medium (such as the water source of the sprinkler truck) to directly cool the cooling medium in the cooling system, eliminating the additional energy consumption of the cooling fan in traditional water-cooling systems, thereby significantly reducing the energy consumption of the entire vehicle. This design not only meets the energy efficiency and range requirements of new energy vehicles, but also helps improve the vehicle's environmental performance.

[0012] 2. Improved heat dissipation: This innovative cooling cycle design optimizes heat exchange from gas-liquid to liquid-liquid, enabling a highly efficient cooling cycle between the heat exchanger and the motor's cooling jacket. Furthermore, the presence of a gas-liquid separator effectively prevents mixing of gas and liquid within the system, improving heat exchange efficiency. Furthermore, the cooling medium tank, serving as a secondary gas-liquid separator, further ensures the purity and stability of the cooling medium within the cooling system, thereby enhancing heat dissipation.

[0013] 3. Reduced maintenance: Components such as cooling fans and heat sinks in traditional water cooling systems are prone to dust accumulation and clogging, requiring regular cleaning and maintenance. This innovative cooling method avoids these problems, reducing maintenance costs and difficulty.

[0014] 4. Low noise: The elimination of the drive motor and cooling fan greatly reduces noise, which can be reduced by more than 10 decibels.

[0015] 5. Small size: The drive motor and cooling fan are eliminated, thereby reducing the installation volume, which can be reduced by more than 1 / 3. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a partial cross-sectional schematic diagram of the utility model;

[0017] Figure 2 This is one of the overall structural diagrams of the utility model;

[0018] Figure 3 This is the second schematic diagram of the overall structure of the utility model;

[0019] Figure 4 This is the third schematic diagram of the overall structure of the utility model;

[0020] Figure 5 This is the fourth schematic diagram of the overall structure of the utility model;

[0021] Figure 6 This is a structural diagram of an embodiment of a heat exchanger;

[0022] Figure 7 It is a structural diagram of another embodiment of a heat exchanger.

[0023] In the figure: 1. circulating pump; 2. pipe I; 3. motor control box; 4. pipe II; 5. motor; 6. pipe III; 7. cooling medium inlet; 8. heat exchange chamber; 9. cooling medium outlet; 10. pipe IV; 11. water inlet pipe; 12. drain pipe; 13. impeller; 14. output shaft; 15. base; 16. bracket; 17. heat exchange sleeve; 18. pipe V; 19. gas-liquid separator; 20. cooling medium box; 21. liquid filling port; 22. pipe VI; 23. heat exchange coil; 24. liquid delivery pump. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described herein.

[0026] For example, multiple embodiments may have various modifications and various forms, and it should be understood that the scope of rights of the present invention includes equivalents that can implement the technical idea.

[0027] Example 1:

[0028] like Figures 1 to 6As shown, this embodiment is implemented through the following technical solutions: it includes a liquid delivery pump 24 (for delivering water or other liquid media), a motor 5 that drives the pump, and a motor control box 3 for the motor 5. The impeller 13 of the liquid delivery pump 24 is directly mounted on the output shaft 14 of the motor 5. The liquid delivery pump 24 and the motor 5 are integrated, greatly reducing the size, meeting the needs of the limited installation space of special-purpose vehicles. The motor 5 is fixed to the base 15, and the motor control box 3 is fixed to the bracket 16.

[0029] Motor 5 is equipped with a cooling system comprising a circulating pump 1. The water outlet of circulating pump 1 is connected to the cooling pipe inlet in motor control box 3 via pipe I2. The water outlet of the cooling pipe of motor control box 3 is connected to the water inlet of the cooling jacket on the motor 5 housing via pipe II4. The water outlet of the cooling jacket is connected to the cooling medium inlet 7 of the heat exchanger provided on the water inlet pipe 11 via pipe III6. The cooling medium outlet 9 is connected to the gas-liquid separator 19 via pipe IV10. The gas-liquid separator 19 is connected to the water inlet of circulating pump 1 via pipe V18. The top of gas-liquid separator 19 is also connected to the top of cooling medium tank 20 via pipe VI22. The top of cooling medium tank 20 is provided with a liquid filling port 21.

[0030] The heat exchanger of this embodiment includes a heat exchange sleeve 17 mounted on the water inlet pipe 11 (it can also be mounted on the drain pipe 12), and a heat exchange chamber 8 (containing a cooling medium) is formed between the heat exchange sleeve 17 and the water inlet pipe 11. The heat exchange chamber 8 is connected to the cooling medium inlet 7 and the cooling medium outlet 9.

[0031] Example 2:

[0032] like Figure 7 As shown, the heat exchanger of this embodiment includes a heat exchange coil 23 located in the water inlet pipe 11 (or in the drain pipe 12), and the heat exchange coil 23 connects the cooling medium inlet 7 and the cooling medium outlet 9. Other structures are the same as those of the first embodiment.

[0033] The cooling medium in the cooling system forms a cooling loop between the heat exchanger, the cooling jacket of the motor 5, and the cooling pipes of the motor control box 3. The liquid pump 24 uses the medium to cool the cooling medium in the cooling system, eliminating the additional energy consumption of the cooling fan in traditional water-cooling systems, thereby significantly reducing the energy consumption of the entire vehicle. Furthermore, the optimization of the traditional gas-liquid heat exchange to liquid-liquid heat exchange greatly improves heat exchange efficiency and heat dissipation by over 15%.

[0034] Of course, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent of the present invention.

Claims

1. A water pump motor cooling system, comprising a liquid delivery pump (24) and a motor (5) driving the pump, wherein the motor (5) is equipped with a cooling system, characterized in that: A cooling jacket is provided on the housing of the motor (5); a heat exchanger is provided on the water inlet pipe (11) or the drain pipe (12) of the liquid delivery pump (24); a pipeline of the cooling system connects the heat exchanger and the cooling jacket of the motor (5); a cooling medium in the cooling system forms a cooling cycle between the heat exchanger and the cooling jacket of the motor (5); and the delivery medium of the liquid delivery pump (24) is used to cool the cooling medium in the cooling system; and a gas-liquid separator (19) is also provided on the pipeline of the cooling system.

2. The water pump motor cooling system according to claim 1, characterized in that: The pipeline of the cooling system is also connected to the cooling pipeline in the motor control box (3).

3. The water pump motor cooling system according to claim 1, characterized in that: The cooling jacket on the motor (5) housing, the cooling pipeline in the motor control box (3), and the gas-liquid separator (19) are connected in series.

4. The water pump motor cooling system according to claim 1, characterized in that: The invention also includes a cooling medium box (20), the bottom of which is connected to the pipeline of the cooling system. According to the direction of the cooling cycle, the cooling medium box (20) is located after the gas-liquid separator (19), and the top of the gas-liquid separator (19) is connected to the top of the cooling medium box (20) through a pipeline.

5. The water pump motor cooling system according to claim 1, characterized in that: The heat exchanger comprises a heat exchange sleeve (17) sleeved on a water inlet pipe (11) or a drain pipe (12), a heat exchange chamber (8) being formed between the heat exchange sleeve (17) and the water inlet pipe (11) or the drain pipe (12), and the heat exchange chamber (8) being connected to a cooling medium inlet (7) and a cooling medium outlet (9).

6. The water pump motor cooling system according to claim 1, characterized in that: The heat exchanger comprises a heat exchange coil (23) located in the water inlet pipe (11) or the drain pipe (12), and the heat exchange coil (23) is connected to the cooling medium liquid inlet (7) and the cooling medium liquid outlet (9).

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