Improved electric water pump

Abstract

The invention relates to an improved electric water pump, belongs to the field of electric water pumps, and solves the technical problems that an existing electric water pump is large in installation space and complex in assembly procedure, the improved electric water pump comprises a water pump shell, a motor installation cavity is formed in the water pump shell, and a motor is installed in the motor installation cavity; the water pump shell is further provided with a pump shaft mounting hole communicated with the motor mounting cavity, an output shaft of the motor serves as the pump shaft, and the output shaft of the motor extends out of the pump shaft mounting hole and is provided with an impeller. The output shaft of the motor also serves as the pump shaft, the size of the water pump shell is further reduced, the installation space is reduced, the structure is further simplified, and assembling operation is facilitated.

Description

Technical Field

[0001] The invention relates to the field of water pumps, and in particular to an improved electric water pump. Background Art

[0002] Compared with traditional mechanical pumps, electric water pumps eliminate the structural coupling and parameter decoupling between the pump and the engine, and can accurately match the engine operating conditions and vehicle operating conditions, thereby optimizing the engine installation space, extending the engine service life, and saving energy and protecting the environment. It is currently one of the main development directions for booster components in the cooling circulation system of internal combustion engines. However, existing electric water pumps still occupy a large amount of installation space, and the assembly is relatively complex, which cannot meet the increasingly high requirements for installation space and assembly convenience. Summary of the invention

[0003] The present invention provides an improved electric water pump, aiming to solve the problems that the existing improved electric water pump is large in size, has high requirements for installation space and has a relatively complicated assembly process.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an improved electric water pump, comprising a water pump housing, a motor mounting cavity is provided in the water pump housing, a motor is installed in the motor mounting cavity, a pump shaft mounting hole connected to the motor mounting cavity is also provided on the water pump housing, the output shaft of the motor also serves as the pump shaft, the output shaft of the motor extends from the pump shaft mounting hole and is installed with an impeller.

[0005] As a preferred technical solution, a cooling water groove is provided on the housing of the electric motor, and the inner wall of the water pump housing and the cooling water groove form a cooling water channel.

[0006] As a preferred technical solution, a cooling water groove is provided on the inner wall of the water pump housing, and the housing of the electric motor and the cooling water groove form a cooling water channel.

[0007] As a preferred technical solution, the cooling water trough extends in a spiral shape.

[0008] As a preferred technical solution, a cooling jacket is provided between the motor and the water pump housing, a cooling water groove is provided on the outer peripheral surface of the cooling jacket, and a cooling water channel is formed between the cooling water groove and the inner wall of the motor installation cavity.

[0009] As a preferred technical solution, the cooling water channel extends along a spiral line.

[0010] As a preferred technical solution, a cooling water pipe is embedded in the housing of the motor, and the cooling water pipe extends in a spiral shape.

[0011] As a preferred technical solution, a water storage chamber is provided between the front end face of the motor and the water pump housing, an evaporation hole is provided on the water pump housing, the inner end of the evaporation hole extends to the water storage chamber, the outer end of the evaporation hole extends to the outer surface of the water pump housing, and a breathable valve is installed on the evaporation hole.

[0012] As a preferred technical solution, the cooling jacket comprises a jacket body and a mounting ring located at the front side of the jacket body, the mounting ring and the jacket body are an integrated structure, and an oil seal is provided between the inner circumference of the mounting ring and the motor.

[0013] As a preferred technical solution, an inner impeller located in the water storage chamber is fixedly mounted on the output shaft of the motor, and the inner impeller includes a plurality of inner blades.

[0014] Due to the adoption of the above technical solution, an improved electric water pump includes a water pump housing, a motor mounting cavity is provided in the water pump housing, a motor is installed in the motor mounting cavity, a pump shaft mounting hole connected to the motor mounting cavity is also provided on the water pump housing, the output shaft of the motor also serves as the pump shaft, the output shaft of the motor extends from the pump shaft mounting hole and is installed with an impeller. The output shaft of the motor also serves as the pump shaft, which further reduces the volume of the water pump housing, reduces the installation space, and further simplifies the structure, making it easier to perform assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0016] Figure 2 is a structural diagram of Embodiment 2 of the present invention;

[0017] Figure 3 is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0018] Figure 4 is a schematic structural diagram of a fourth embodiment of the present invention;

[0019] Figure 5 is a structural diagram of Embodiment 5 of the present invention;

[0020] Among them: 1. Water pump housing; 2. Motor installation cavity; 3. Motor; 4. Pump shaft installation hole; 5. Output shaft; 6. Impeller; 7. Cooling water tank; 8. Sealing gasket; 9. Sleeve; 10. Cooling water pipe; 11. Water storage cavity; 12. Evaporation hole; 13. Mounting ring; 14. Oil seal; 15. Outer shell; 16. Breathing valve; 17. Inner blades. DETAILED DESCRIPTION

[0021] Embodiment 1: Figure 1As shown, an improved electric water pump comprises a water pump housing 1, wherein a motor mounting cavity 2 is provided in the water pump housing 1, a motor 3 is installed in the motor mounting cavity 2, a pump shaft mounting hole 4 communicating with the motor mounting cavity 2 is further provided on the water pump housing 1, an output shaft 5 of the motor 3 also serves as the pump shaft, and the output shaft 5 of the motor 3 extends from the pump shaft mounting hole 4 and is installed with an impeller 6. The output shaft 5 of the motor 3 also serves as the pump shaft, further reducing the volume of the water pump housing 1, reducing the installation space, and further simplifying the structure, making it easier to perform assembly operations.

[0022] A cooling jacket is provided between the motor 3 and the water pump housing 1, and a cooling water groove 7 is provided on the outer peripheral surface of the cooling jacket. A cooling water channel is formed between the cooling water groove 7 and the inner wall of the motor installation cavity 2, and a sealing mechanism is provided between the two ends of the cooling jacket and the inner wall of the motor installation cavity 2. The cooling water groove 7 extends in a spiral shape. By pumping coolant into the cooling water channel, the motor 3 is cooled and the heat is dissipated, and at the same time, the coolant leakage is prevented from affecting the life of the motor 3. A sealing mechanism is provided between the two ends of the cooling jacket and the water pump housing 1. The sealing mechanism includes a sealing gasket 8 provided between the two ends of the cooling jacket and the water pump housing 1.

[0023] The cooling jacket includes a jacket body 9 and a mounting ring 13 located at the front side of the jacket body 9. The mounting ring 13 and the jacket body 9 are an integrated structure, and an oil seal 14 is provided between the inner circumference of the mounting ring 13 and the motor 3. A sealing gasket between the front end of the cooling jacket and the inner wall of the motor mounting cavity 2 can be provided between the inner circumference of the mounting ring 13 and the inner wall of the motor mounting cavity 2, and an oil seal 14 is provided between the inner circumference of the mounting ring 13 and the motor 3, thereby ensuring the sealing of the motor mounting cavity 2.

[0024] A water storage chamber 11 is provided between the front end surface of the motor 3 and the water pump housing 1. The provision of the water storage chamber 11 can effectively prevent false water leakage of the water pump from causing misjudgment. An evaporation hole 12 is provided on the water pump housing 1, the inner end of the evaporation hole 12 extends to the water storage chamber 11, and the outer end of the evaporation hole 12 extends to the outer surface of the water pump housing 1, and a breathable valve 16 is installed on the evaporation hole 12. The evaporation hole 12 is connected to the water storage chamber 11, providing a way for the water in the water storage chamber 11 to evaporate, thereby avoiding excessive accumulation of water in the water storage chamber 11.

[0025] Embodiment 2:

[0026] The structure of the second embodiment is basically the same as that of the first embodiment, except that Figure 2As shown, a cooling water tank 7 is provided on the housing 15 of the motor 3, and the inner wall of the water pump housing 1 and the cooling water tank 7 form a cooling water channel. In this way, the cooling water tank 7 is provided on the housing 15 of the motor, and the coolant can exchange heat with the motor 3 more directly, thereby improving the heat dissipation efficiency. Sealing pads can be provided between the two ends of the housing of the motor 3 and the water pump housing to achieve sealing.

[0027] Embodiment three:

[0028] The structure of the third embodiment is basically the same as that of the first embodiment, except that Figure 3 As shown, the inner wall of the water pump housing 1 is provided with a cooling water groove 7, and the housing of the motor and the cooling water groove 7 form a cooling water channel. The cooling water groove 7 can also be arranged on the inner wall of the water pump housing, and the housing 15 of the motor 3 and the cooling water groove 7 form a cooling water channel, and the coolant can also directly act on the motor 3, thereby improving the heat exchange efficiency.

[0029] Embodiment 4:

[0030] The structure of the fourth embodiment is basically the same as that of the first embodiment, except that Figure 4 As shown, a cooling water pipe 10 is embedded in the housing 15 of the motor 3, and the cooling water pipe 10 extends in a spiral shape. The cooling water pipe is embedded in the housing of the motor 3, so that the coolant can flow in the housing 15 of the motor 3, directly taking away the heat, and improving the heat dissipation efficiency.

[0031] Embodiment five:

[0032] The structure of the fifth embodiment is substantially the same as that of the first embodiment, except that Figure 5 As shown, an inner impeller located in the water storage chamber 11 is fixedly mounted on the output shaft 5 of the motor 3, and the inner impeller includes a plurality of inner blades 17. The inner impeller rotates with the output shaft 5, accelerating the air flow in the water storage chamber, promoting the evaporation of water in the water storage chamber, effectively taking away heat, improving the heat dissipation effect, and ensuring the efficient operation of the water pump.

[0033] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. An improved electric water pump, characterized in that: The invention comprises a water pump housing (1), wherein a motor mounting cavity (2) is provided in the water pump housing (1), a motor (3) is mounted in the motor mounting cavity (2), a pump shaft mounting hole (4) communicating with the motor mounting cavity (2) is also provided on the water pump housing (1), an output shaft (5) of the motor (3) also serves as the pump shaft, and the output shaft (5) of the motor (3) extends from the pump shaft mounting hole (4) and is mounted with an impeller (6).

2. The improved electric water pump according to claim 1, characterized in that: A cooling water groove (7) is provided on the housing (15) of the electric motor (3), and the inner wall of the water pump housing (1) and the cooling water groove (7) form a cooling water channel.

3. The improved electric water pump according to claim 1, characterized in that: The inner wall of the water pump housing (1) is provided with a cooling water groove (7), and the housing (15) of the electric motor (3) and the cooling water groove (7) form a cooling water channel.

4. The improved electric water pump according to claim 2 or 3, characterized in that: The cooling water trough (7) extends in a spiral shape.

5. The improved electric water pump according to claim 1, characterized in that: A cooling jacket is provided between the motor (3) and the water pump housing (1), a cooling water groove (7) is provided on the outer peripheral surface of the cooling jacket, and a cooling water channel is formed between the cooling water groove (7) and the inner wall of the motor installation cavity (2).

6. The improved electric water pump as claimed in claim 5, characterized in that: The cooling water channel extends along a spiral line.

7. The improved electric water pump according to claim 1, characterized in that: A cooling water pipe (10) is embedded in the housing (15) of the motor (3), and the cooling water pipe (10) extends in a spiral shape.

8. The improved electric water pump according to claim 1, characterized in that: A water storage chamber (11) is provided between the front end surface of the motor (3) and the water pump housing (1); an evaporation hole (12) is provided on the water pump housing (1); the inner end of the evaporation hole (12) extends to the water storage chamber (11); the outer end of the evaporation hole (12) extends to the outer surface of the water pump housing (1); and a breathable valve (16) is installed on the evaporation hole (12).

9. The improved electric water pump as claimed in claim 5, characterized in that: The cooling sleeve comprises a sleeve body (9) and a mounting ring (13) located at the front side of the sleeve body (9); the mounting ring (13) and the sleeve body (9) are an integrated structure; an oil seal (14) is provided between the inner circumferential surface of the mounting ring (13) and the motor (3).

10. The improved electric water pump according to claim 8, characterized in that: An inner impeller located in the water storage chamber (11) is fixedly mounted on the output shaft (5) of the motor (3), and the inner impeller includes a plurality of inner blades (17).

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