An integrated variable flow cooling water pump motor structure

Abstract

The present invention relates to an integrated variable flow cooling water pump motor structure, which belongs to the technical field of automobile design and manufacturing. The integrated variable flow cooling water pump motor structure of the present invention includes a motor body and an impeller mechanism; an axial water jacket and a rear water jacket are formed in the shell of the motor body, the axial water jacket is connected to the rear water jacket, and a cooling water inlet is provided on the axial water jacket, and a cooling water outlet is provided on the rear water jacket. A motor shaft is provided in the motor body, and the impeller mechanism is integrated at the rear end of the motor shaft, and the impeller mechanism is located in the rear water jacket. The present invention replaces the water pump in the cooling water circuit with the impeller mechanism of the motor itself, and realizes the blade angle changing with temperature through a mechanical structure, so that the flow rate of cooling water can change in accordance with the change of motor temperature. In this way, excessive cooling water circulation is avoided, energy saving is achieved, and the cost of the cooling system is greatly reduced, and problems such as noise caused by the water pump are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile design and manufacturing, and more particularly to an integrated variable flow cooling water pump motor structure. Background Art

[0002] In the prior art, Figure 1 As shown, the electric vehicle cooling water circuit consists of a radiator 1, auxiliary water tank 2, water pump 3, motor 4, and necessary piping. The water pump 3 is essential, providing pressure to ensure smooth circulation of the cooling water. However, the presence of the water pump increases the cost of the entire system and also introduces NVH issues. Summary of the Invention

[0003] In order to solve the above technical problems existing in the prior art, the object of the present invention is to provide an integrated variable flow cooling water pump motor structure.

[0004] The integrated variable flow cooling water pump motor structure of the present invention includes a motor body and an impeller mechanism arranged in the motor body; an axial water jacket and a rear water jacket are formed in the shell of the motor body, the axial water jacket is connected to the rear water jacket, and a cooling water inlet is provided on the axial water jacket, and a cooling water outlet is provided on the rear water jacket; a motor shaft is provided in the motor body, and the impeller mechanism is integrated at the rear end of the motor shaft, and the impeller mechanism is located in the rear water jacket, wherein the angle of the blades of the impeller mechanism changes with the temperature of the cooling water.

[0005] wherein, the impeller mechanism includes an impeller main shaft, a blade bushing, a blade, a return spring and a heat induction ring; the front end of the impeller main shaft is a mounting end, and a blade mounting post is provided on the mounting end; the blade includes a blade body and a mounting base located at the bottom of the blade body, and a blade mounting hole is provided at the front and rear ends of the mounting base; the blade bushing includes a bushing body and a blade mounting post located on the bushing body; the heat induction ring, the blade bushing and the return spring are sequentially sleeved on the impeller main shaft from the rear end of the impeller main shaft; the heat induction ring is located between the mounting end of the impeller main shaft and the blade bushing, the front blade mounting hole on the mounting base is mounted on the blade mounting post at the mounting end, and the rear blade mounting hole on the mounting base is mounted on the blade mounting post on the bushing body, the shaft body of the impeller main shaft is mounted on the motor shaft and the return spring is arranged between the motor shaft and the blade bushing; the inner diameter of the blade bushing is larger than the diameter of the impeller main shaft so that the blade bushing can slide along the axial direction on the impeller main shaft and rotate around the axis.

[0006] Wherein, a sealing ring is provided between the motor shaft and the housing.

[0007] Wherein, the impeller main shaft is arranged relative to the cooling water outlet.

[0008] Wherein, the number of blade mounting columns on the mounting end corresponds to the number of the blades.

[0009] Wherein, the number of blade mounting columns on the blade bushing corresponds to the number of the blades.

[0010] Wherein, the blade mounting column is fixed in the blade mounting hole through a clamping ring.

[0011] Wherein, the blade bushing is made of thermal expansion material.

[0012] Compared with the prior art, the integrated variable flow cooling water pump motor structure of the present invention has the following beneficial effects:

[0013] This invention replaces the water pump in the cooling water circuit with the motor's built-in impeller mechanism. The mechanical structure allows the blade angle to change with temperature, allowing the cooling water flow rate to adjust in line with changes in motor temperature. This prevents excessive cooling water circulation, achieving energy savings, significantly reducing cooling system costs, and avoiding noise and other issues associated with the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a cooling water circuit for an electric vehicle in the prior art.

[0015] Figure 2 This is a schematic diagram of the integrated variable flow cooling water pump motor structure of the present invention.

[0016] Figure 3 It is a structural diagram of the impeller mechanism in the motor structure.

[0017] Figure 4 This is an exploded diagram of the impeller mechanism in the motor structure.

[0018] Figure 5 It is a structural schematic diagram of the impeller main shaft in the impeller mechanism.

[0019] Figure 6 Schematic diagram of the structure of the blades in the impeller mechanism.

[0020] Figure 7 This is a schematic diagram of the structure of the blade bushing in the impeller mechanism.

[0021] Figure 8 Schematic diagram of the structure of the thermal induction ring in the impeller mechanism.

[0022] Figure 9 Schematic diagram of the structure of the return spring in the impeller mechanism. DETAILED DESCRIPTION

[0023] The integrated variable flow cooling water pump motor structure of the present invention will be further described below in conjunction with specific embodiments to help those skilled in the art have a more complete, accurate and in-depth understanding of the technical solution of the invention.

[0024] Example 1

[0025] This embodiment adds an impeller mechanism at one end of the motor rotor shaft, which together with the motor housing forms an integrated water pump structure. When the motor is working, the impeller rotates with the rotor, pressing the cooling water into the pipeline, replacing the single water pump and allowing the cooling water to circulate smoothly. In order to adapt to the changes in the cooling water flow demand due to different temperature changes of the motor cooling water, the impeller mechanism is designed to have an adjustable flow rate. This can ensure that when the motor temperature is low, the blade angle becomes smaller, meeting the motor cooling requirements while greatly reducing the impeller energy consumption. When the motor temperature is high and a larger amount of cooling water is required, the impeller angle becomes larger, increasing the cooling water flow to meet the motor cooling requirements.

[0026] Figure 2 The integrated variable flow cooling water pump motor structure of this embodiment is shown, which includes a motor body 10 and an impeller mechanism 20 disposed in the motor body 10. An axial water jacket 13 and a rear water jacket 14 are formed in the housing of the motor body 10. The axial water jacket 13 is connected to the rear water jacket 14, and the axial water jacket 13 is provided with a cooling water inlet 11, and the rear water jacket 14 is provided with a cooling water outlet 12. A motor shaft 15 is provided in the motor body 10, and a sealing ring 16 is provided between the motor shaft 15 and the housing. The impeller mechanism 20 is integrated at the rear end of the motor shaft 15 and is located in the rear water jacket 14. Preferably, the impeller main shaft 21 of the impeller mechanism 20 is arranged relative to the cooling water outlet 12.

[0027] like Figure 3-9 As shown, the impeller mechanism used in this embodiment includes an impeller main shaft 21, a blade bushing 22, blades 23, a return spring 24 and a heat induction ring 25. Figure 5 As shown, the front end of the impeller main shaft 21 is the mounting end, and the mounting end is provided with blade mounting posts, and the number of the blade mounting posts corresponds to the number of the blades. Figure 6 As shown, the blade 23 includes a blade body and a mounting base located at the bottom of the blade body, and a blade mounting hole is provided at the front end and the rear end of the mounting base. Figure 7As shown, the blade bushing 22 includes a bushing body and blade mounting posts located on the bushing body. The number of blade mounting posts corresponds to the number of blades. The heat induction ring 25, blade bushing 22, and return spring 24 are sequentially mounted on the impeller main shaft 21 from the rear end. The heat induction ring 25 is located between the mounting end of the impeller main shaft 21 and the blade bushing 22. The front blade mounting holes on the mounting base are mounted on the blade mounting posts at the mounting end, while the rear blade mounting holes on the mounting base are mounted on the blade mounting posts on the bushing body and can be secured via a retaining ring. The shaft of the impeller main shaft 21 is mounted on the motor shaft 15, with the return spring 24 positioned between the motor shaft 15 and the blade bushing 22. The inner diameter of the blade bushing 22 is larger than the diameter of the impeller main shaft 21, allowing it to slide and rotate along the axis of the impeller main shaft 21.

[0028] The integrated variable flow cooling water pump motor structure of this embodiment can adapt to changes in the temperature of the motor cooling water and automatically adjust the cooling water flow rate. When the motor temperature is high and a large amount of cooling water is required, the impeller angle becomes larger, increasing the cooling water flow rate to meet the motor cooling requirements. When the motor temperature is low and the cooling water demand is small, the impeller angle can be reduced, reducing the cooling water flow rate. While meeting the motor cooling requirements, it can significantly reduce the impeller energy consumption. Specifically, in this embodiment, the thermal induction ring 25 is made of a thermally sensitive expansion material, and its axial length changes with the temperature of the cooling water. When the temperature of the cooling water increases (meaning that the cooling demand increases), the thermal induction ring 25 expands due to heat, pushing the blade bushing 22 to slide and rotate toward the return spring 24, thereby driving the mounting base to move and increasing the angle of the blade body, thereby accelerating the circulation of cooling water and enhancing the cooling effect. Similarly, when the water temperature drops, the heat induction ring 25 contracts. Under the action of the return spring 24, the blade bushing 22 slides and rotates toward the heat induction ring 25, so that the blade angle decreases and the circulation speed of the cooling water is reduced, thereby not only meeting the cooling requirements but also reducing the energy consumption of the blade.

[0029] For ordinary technicians in this field, the specific embodiments are only illustrative descriptions of the present invention. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. An integrated variable flow cooling water pump motor structure, characterized by: The invention comprises a motor body and an impeller mechanism arranged in the motor body; an axial water jacket and a rear water jacket are formed in the housing of the motor body, the axial water jacket is communicated with the rear water jacket, and a cooling water inlet is provided on the axial water jacket, and a cooling water outlet is provided on the rear water jacket; a motor shaft is provided in the motor body, and the impeller mechanism is integrated into the rear end of the motor shaft, and the impeller mechanism is located in the rear water jacket, wherein the angle of the blades of the impeller mechanism changes with the temperature of the cooling water; the impeller mechanism comprises an impeller main shaft, a blade The blade bushing, blade, return spring and heat induction ring; the front end of the impeller main shaft is the mounting end, and the mounting end is provided with a blade mounting post; the blade includes a blade body and a mounting base located at the bottom of the blade body, and the front and rear ends of the mounting base are each provided with a blade mounting hole; the blade bushing includes a bushing body and a blade mounting post located on the bushing body; the heat induction ring, blade bushing and return spring are sequentially sleeved on the impeller main shaft from the rear end of the impeller main shaft; the heat induction ring is located between the mounting end of the impeller main shaft and the Between the blade bushings, the front blade mounting hole on the mounting base is mounted on the blade mounting column at the mounting end, and the rear blade mounting hole on the mounting base is mounted on the blade mounting column on the bushing body, the shaft of the impeller main shaft is mounted on the motor shaft and the return spring is arranged between the motor shaft and the blade bushing; the inner diameter of the blade bushing is larger than the diameter of the impeller main shaft so that the blade bushing can slide along the axial direction on the impeller main shaft and rotate around the axis; the heat induction ring is made of a heat-sensitive expansion material, and its length along the axial direction will change with the temperature of the cooling water. When the temperature of the cooling water rises, the heat induction ring expands due to heat and pushes the blade bushing to slide and rotate toward the direction of the return spring, thereby driving the mounting base to move and increasing the angle of the blade body, thereby accelerating the circulation of the cooling water; when the water temperature drops, the heat induction ring contracts, and under the action of the return spring, the blade bushing slides and rotates toward the heat induction ring, so that the blade angle decreases and the circulation speed of the cooling water is reduced.

2. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: A sealing ring is provided between the motor shaft and the housing.

3. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: The impeller main shaft is arranged relative to the cooling water outlet.

4. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: The number of blade mounting columns on the mounting end corresponds to the number of blades.

5. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: The number of blade mounting columns on the blade bushing corresponds to the number of the blades.

6. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: The blade mounting post is fixed in the blade mounting hole through a clamping ring.

7. The integrated variable flow cooling water pump motor structure according to claim 1, characterized in that: The blade bushing is made of a thermal expansion material.

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