Water-cooling double-head permanent magnet synchronous motor and mobile permanent magnet frequency conversion air compressor

Abstract

The utility model relates to a permanent magnet synchronous motor and an air compressor, in particular to a water-cooling double-head permanent magnet synchronous motor and a movable permanent magnet frequency conversion air compressor. The permanent magnet synchronous motor comprises a double-end permanent magnet synchronous motor body, a water pump body and a water cooling pipe, one end of the double-head permanent magnet synchronous motor body is a water pump shaft, the water pump shaft is inserted into the water pump body and drives the water pump body to work, a water outlet of the water pump body is communicated with a water inlet of a water cooling pipe, a water outlet of the water cooling pipe is communicated with a water inlet of the water pump body, and the water cooling pipe is connected with a motor shell of the double-head permanent magnet synchronous motor body. The utility model relates to a water-cooling double-head permanent magnet synchronous motor and a mobile permanent magnet frequency conversion air compressor. The water-cooling double-head permanent magnet synchronous motor comprises a water-cooling double-head permanent magnet synchronous motor, a compressor, a bracket, a radiator and a mobile device, the technical problems that an existing permanent magnet synchronous motor is slow in heat dissipation and easy to burn down are solved.

Description

Technical Field

[0001] The utility model relates to a permanent magnet synchronous motor and an air compressor, in particular to a water-cooled double-head permanent magnet synchronous motor and a mobile permanent magnet variable frequency air compressor. Background Art

[0002] The permanent magnet synchronous motor is mainly composed of various parts such as the rotor, end cover and stator. The permanent magnet synchronous motor is easy to generate a lot of heat when in use. When the temperature of the permanent magnet synchronous motor is too high, it affects the working efficiency and may also cause the permanent magnet synchronous motor to burn out. The existing permanent magnet synchronous motor heat dissipation method is generally air cooling, that is, using a fan to blow the motor shell of the permanent magnet synchronous motor. The air cooling heat dissipation speed is slow, and it cannot achieve the expected effect when cooling a large-power permanent magnet synchronous motor. Utility Model Content

[0003] The main purpose of the utility model is to provide a water-cooled double-head permanent magnet synchronous motor, which solves the technical problems of slow heat dissipation and easy burning of the existing permanent magnet synchronous motor.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a water-cooled double-head permanent magnet synchronous motor, comprising a double-head permanent magnet synchronous motor body, a water pump body and a water cooling pipe;

[0005] One end of the double-headed permanent magnet synchronous motor body is a water pump shaft, which is inserted into the water pump body. The water pump shaft drives the water pump body to work. The water outlet of the water pump body is connected to the water inlet of the water cooling pipe, and the water outlet of the water cooling pipe is connected to the water inlet of the water pump body. The water cooling pipe is serpentinely arranged on the outside of the motor shell of the double-headed permanent magnet synchronous motor body.

[0006] Preferably, the water-cooling pipe includes a water inlet pipe, a water outlet pipe, a water-cooling straight pipe and a water-cooling bent pipe. The water inlet pipe is connected to the water outlet of the water pump, the water outlet pipe is connected to the water inlet of the water pump, the water inlet pipe and the water outlet pipe are respectively connected to different water-cooling straight pipes, and multiple water-cooling straight pipes are distributed at equal intervals along the outer wall of the motor housing. The water-cooling straight pipes are close to the outer wall, and adjacent water-cooling straight pipes are connected through water-cooling bent pipes.

[0007] Preferably, the water cooling pipe is also connected to a radiator.

[0008] Preferably, the outer side of the water cooling tube is covered with a shell, and the shell is fixedly connected to the double-head permanent magnet synchronous motor body.

[0009] The utility model also discloses a mobile permanent magnet variable frequency air compressor, including a water-cooled double-head permanent magnet synchronous motor, a compressor, a bracket, a radiator and a mobile device;

[0010] The mobile device includes wheels, a chassis and a brake disc, the wheels are arranged at the bottom of the chassis, the chassis is rotatably connected to the wheels, and the wheels are coaxially rotatably connected to the brake disc;

[0011] A water-cooled double-head permanent magnet synchronous motor, a compressor, and a radiator are fixed on the top of the chassis, and the radiator is arranged at one end of the chassis;

[0012] The water-cooled double-head permanent magnet synchronous motor is connected to the compressor through a bracket.

[0013] The beneficial effects achieved by the utility model are:

[0014] The utility model adopts water cooling to cool the permanent magnet synchronous motor, which can cool the permanent magnet synchronous motor more quickly, thereby improving the working stability of the permanent magnet synchronous motor; a double-headed permanent magnet synchronous motor is adopted, one of which is used as a water pump shaft to drive the water pump to work, thereby realizing the circulation of water-cooled water, thereby improving the overall integration and saving installation space; the water cooling pipe and the water pump are both arranged on the outside of the motor casing, and the motor casing can protect the inner core of the motor and prevent the water-cooled water from leaking into the double-headed permanent magnet synchronous motor.

[0015] The utility model discloses a mobile permanent magnet variable frequency air compressor which adopts a water-cooled double-head permanent magnet synchronous motor, can improve the working efficiency, and also adds a moving device to the air compressor, so that the air compressor is more convenient to move and the convenience of use is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a front view of a water-cooled double-headed permanent magnet synchronous motor with its housing hidden, disclosed in a specific embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of a water-cooled double-headed permanent magnet synchronous motor with its housing hidden behind a specific embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a water-cooled double-headed permanent magnet synchronous motor disclosed in a specific embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of a mobile permanent magnet variable frequency air compressor disclosed in a specific embodiment of the utility model;

[0021] Figure 5 It is another schematic diagram of a mobile permanent magnet variable frequency air compressor disclosed in a specific embodiment of the utility model;

[0022] Figure 6 It is a bottom view of a mobile permanent magnet variable frequency air compressor disclosed in a specific implementation manner of the utility model.

[0023] Description of reference numerals:

[0024] 1. Double-headed permanent magnet synchronous motor body; 11. Water pump shaft; 12. Rotating shaft; 2. Water pump body; 3. Water cooling pipe; 31. Water inlet pipe; 32. Water outlet pipe; 33. Water cooling straight pipe; 34. Water cooling bent pipe; 4. Casing; 5. Water-cooled double-headed permanent magnet synchronous motor; 6. Compressor; 7. Bracket; 8. Moving device; 81. Wheel; 82. Chassis; 83. Brake disc; 9. Radiator. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below. Embodiment 1:

[0026] like Figure 1-Figure 3 As shown, the utility model discloses a water-cooled double-headed permanent magnet synchronous motor, including a double-headed permanent magnet synchronous motor body 1, a water pump body 2 and a water cooling pipe 3. One end of the double-headed permanent magnet synchronous motor body 1 is a rotating shaft 12, which rotates synchronously with the motor shaft, and the rotating shaft 12 is used to provide power to other devices; the other end of the double-headed permanent magnet synchronous motor body 1 is a water pump shaft 11, which also rotates synchronously with the motor shaft, and is used to provide power to the water pump body 2. Specifically, the water pump shaft 11 is inserted into the water pump body 2, and when the water pump shaft 11 rotates, it can drive the water pump body 2 to work, so that the water-cooled water in the water cooling pipe 3 can complete the circulation in the water cooling pipe 3. As a connection mode between the water pump body 2 and the water cooling pipe 3, the water outlet of the water pump body 2 is connected to the water inlet of the water cooling pipe 3, the water outlet of the water cooling pipe 3 is connected to the water inlet of the water pump body 2, the water cooling pipe 3 is connected to the motor shell of the double-headed permanent magnet synchronous motor body 1, and the water cooling pipe 3 is arranged in a serpentine shape around the outside of the motor shell of the double-headed permanent magnet synchronous motor body 1. In order to further increase the amount of water cooling water and improve the cooling effect, an external water tank (not shown in the figure) can be connected to the middle section of the water cooling pipe 3. When the water pump body 2 is working, the water in the external water tank can be pressed into the water cooling pipe 3. In this case, the water cooling pipe 3 can be divided into two sections, the water outlet of the water pump body 2 is connected to the water inlet of the first section of the water cooling pipe 3, the water outlet of the first section of the water cooling pipe 3 is connected to the water inlet of the external water tank, the water outlet of the external water tank is connected to the water inlet of the second section of the water cooling pipe 3, and the water outlet of the second section of the water cooling pipe 3 is connected to the water inlet of the water pump body 2.

[0027] like Figure 1 , Figure 2As shown, as an embodiment of a water cooling pipe 3, the water cooling pipe 3 includes a water inlet pipe 31, a water outlet pipe 32, a water cooling straight pipe 33 and a water cooling elbow 34. The water inlet pipe 31 is connected to the water outlet of the water pump body 2, and the water outlet pipe 32 is connected to the water inlet of the water pump body 2. The water inlet pipe 31 and the water outlet pipe 32 are respectively connected to different water cooling straight pipes 33. A plurality of water cooling straight pipes 33 are evenly spaced along the outer wall of the motor housing. The water cooling straight pipes 33 are fixedly connected to the outer wall of the motor housing. At this time, the water cooling straight pipes 33 are tightly fitted to the outer wall, thereby improving the heat dissipation efficiency. Two adjacent water cooling straight pipes 33 are respectively connected to the water inlet and the water outlet of the external water tank, and the adjacent water cooling straight pipes 33 are connected through the water cooling elbow 34. The above connections are all sealed to prevent water leakage at the connection.

[0028] In order to cool the water-cooled water and further improve the cooling efficiency of the double-headed permanent magnet synchronous motor body 1, the water-cooling pipe 3 is also connected to a radiator 9, which can be composed of a heat dissipation honeycomb and a fan. In this case, the water-cooling pipe 3 and the heat dissipation honeycomb can be tightly fitted. Because the radiator 9 is a relatively conventional technology, it will not be described in detail. Obviously, other radiators 9 can also be used to dissipate heat for the external water tank.

[0029] When in use, the double-headed permanent magnet synchronous motor body 1 is started, the water pump shaft 11 rotates and drives the water pump body 2 to operate, and the water-cooled water flows into the water inlet pipe 31 through the water pump body 2, and then passes through a plurality of water-cooled straight pipes 33 and a plurality of water-cooled curved pipes 34 in sequence, and finally flows through the water outlet pipe 32 into the water pump body 2, completing a water-cooled water cycle. In this process, any water-cooled straight pipe 33 can be extended to the radiator 9 (the specific connection method of the water-cooled straight pipe 33 and the radiator 9 is not shown in the figure), and the radiator 9 is used to cool the water-cooled water.

[0030] In order to prevent the leakage of cooling water from the water cooling pipe 3 and affect the normal operation of the double-headed permanent magnet synchronous motor body 1, the outer side of the water cooling pipe 3 is also covered with a shell 4, and the shell 4 is fixedly connected to the double-headed permanent magnet synchronous motor body 1. Embodiment 2:

[0031] like Figure 3-Figure 6 As shown, the utility model discloses a mobile permanent magnet variable frequency air compressor, comprising the water-cooled double-head permanent magnet synchronous motor 5 in embodiment 1, a compressor 6, a bracket 7, a radiator 9 and a mobile device 8. The mobile device 8 comprises a wheel 81, a chassis 82 and a brake disc 83, wherein the wheel 81 is arranged at the bottom of the chassis 82, the chassis 82 is rotatably connected to the wheel 81, and the wheel 81 is coaxially rotatably connected to the brake disc 83.

[0032] The water-cooled double-headed permanent magnet synchronous motor 5 is fixed to the top of the chassis 82 through a support frame. The water-cooled double-headed permanent magnet synchronous motor 5 is connected to the compressor 6 through a bracket 7, and the compressor 6 is also fixedly connected to the chassis 82; a radiator 9 is fixedly connected to one end of the chassis 82 away from the compressor 6.

[0033] When in use, the mobile device 8 is started, and the mobile device 8 can move with the mobile permanent magnet variable frequency air compressor, thereby improving the convenience of the overall equipment. The water-cooled double-head permanent magnet synchronous motor 5 is started, and the rotating shaft 12 rotates, thereby driving the compressor 6 to work.

[0034] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A water-cooled double-headed permanent magnet synchronous motor, characterized in that: It comprises a double-head permanent magnet synchronous motor body (1), a water pump body (2) and a water cooling pipe (3); One end of the double-headed permanent magnet synchronous motor body (1) is a water pump shaft (11), and the water pump shaft (11) is inserted into the water pump body (2). The water pump shaft (11) drives the water pump body (2) to work. The water outlet of the water pump body (2) is connected to the water inlet of the water cooling pipe (3), and the water outlet of the water cooling pipe (3) is connected to the water inlet of the water pump body (2). The water cooling pipe (3) is arranged in a serpentine shape around the outside of the motor shell of the double-headed permanent magnet synchronous motor body (1).

2. A water-cooled double-headed permanent magnet synchronous motor according to claim 1, characterized in that: The water cooling pipe (3) comprises a water inlet pipe (31), a water outlet pipe (32), a water cooling straight pipe (33) and a water cooling bent pipe (34); the water inlet pipe (31) is connected to the water outlet of the water pump body (2); the water outlet pipe (32) is connected to the water inlet of the water pump body (2); the water inlet pipe (31) and the water outlet pipe (32) are respectively connected to different water cooling straight pipes (33); a plurality of water cooling straight pipes (33) are distributed at equal intervals along the outer wall of the motor housing; the water cooling straight pipes (33) are in close contact with the outer wall; and adjacent water cooling straight pipes (33) are connected via the water cooling bent pipe (34).

3. A water-cooled double-headed permanent magnet synchronous motor according to claim 2, characterized in that: The water cooling pipe (3) is also connected to a radiator (9).

4. A water-cooled double-headed permanent magnet synchronous motor according to claim 3, characterized in that: The water cooling pipe (3) is covered with a shell (4) on the outside, and the shell (4) is fixedly connected to the double-head permanent magnet synchronous motor body (1).

5. A mobile permanent magnet variable frequency air compressor, characterized in that: It comprises a water-cooled double-headed permanent magnet synchronous motor (5), a compressor (6), a bracket (7), a radiator (9) and a moving device (8) as described in any one of claims 1 to 4; The mobile device (8) comprises a wheel (81), a chassis (82) and a brake disc (83), wherein the wheel (81) is arranged at the bottom of the chassis (82), the chassis (82) is rotationally connected to the wheel (81), and the wheel (81) is coaxially rotationally connected to the brake disc (83); The water-cooled double-head permanent magnet synchronous motor (5), the compressor (6) and the radiator (9) are fixedly arranged on the top of the chassis (82); the radiator (9) is arranged at one end of the chassis (82); The water-cooled double-headed permanent magnet synchronous motor (5) is connected to the compressor (6) via the bracket (7).

Images