CN110890805A

CN110890805A - Permanent magnet motor

Info

Publication number: CN110890805A
Application number: CN201911332842.6A
Authority: CN
Inventors: 邹腊年; 郭玲琼; 夏益锋
Original assignee: Shaoxing Shangyu District Institute Of Technology
Current assignee: Shaoxing Shangyu District Institute Of Technology
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-03-17

Abstract

The invention relates to a permanent magnet motor which comprises a rotating shaft and a motor main body, wherein the rotating shaft penetrates through the motor main body and is fixed with components in the motor main body, a plurality of metal heat conducting sheets are arranged on the outer surface of the motor main body, heat dissipation pieces are arranged among the metal heat conducting sheets, cooling liquid is filled in the heat dissipation pieces, the heat dissipation pieces are made of heat conducting materials and are in contact with the metal heat conducting sheets, and the heat dissipation pieces absorb heat conducted by the metal heat conducting sheets, so that heat dissipation is realized. According to the permanent magnet motor, the plurality of metal heat conducting fins are arranged on the outer surface of the motor main body, the heat dissipation parts are arranged among the metal heat conducting fins and filled with cooling liquid, and the heat dissipation parts absorb heat conducted out by the metal heat conducting fins, so that heat dissipation is realized, and the permanent magnet motor is simple in structure, low in cost, high in practicability and suitable for popularization and use.

Description

Permanent magnet motor

Technical Field

The invention belongs to the technical field of motor heat dissipation, and particularly relates to a permanent magnet motor.

Background

The motor is widely applied to mechanical equipment and production processes around people, and heat dissipation management of the motor is a problem generally concerned by people. The heat dissipation capability of the motor will affect the load capacity and the service life of the motor. The design of the motor is also continuously improved, the rotor of the motor and the permanent magnet motor are mostly in a mode that the rotor is embedded with the permanent magnet to realize high-efficiency operation, but the problem that the heat dissipation of the permanent magnet is difficult is caused, the temperature of the permanent magnet is too high, the magnetism of the permanent magnet is easily weakened or even disappears, and the safety accidents of failure or burning of the motor are caused.

Disclosure of Invention

The present invention is directed to provide a permanent magnet motor in view of the above situation.

The technical scheme adopted by the invention is as follows: a permanent magnet electric machine comprising: the rotating shaft penetrates through the motor main body and is fixed with components in the motor main body, a plurality of metal heat conducting sheets are arranged on the outer surface of the motor main body, heat dissipation pieces are arranged between the metal heat conducting sheets, cooling liquid is filled in the heat dissipation pieces, the heat dissipation pieces are made of heat conduction materials and are in contact with the metal heat conducting sheets, and the heat dissipation pieces absorb heat conducted out by the metal heat conducting sheets, so that heat dissipation is achieved.

The invention has the following effects: according to the permanent magnet motor, the plurality of metal heat conducting fins are arranged on the outer surface of the motor main body, the heat dissipation parts are arranged among the metal heat conducting fins and filled with cooling liquid, and the heat dissipation parts absorb heat conducted out by the metal heat conducting fins, so that heat dissipation is realized, and the permanent magnet motor is simple in structure, low in cost, high in practicability and suitable for popularization and use.

Drawings

Fig. 1 is a schematic cross-sectional view of a permanent magnet motor according to the present invention;

fig. 2 shows a cross-sectional view at the front axle in fig. 1.

Detailed Description

The invention provides a permanent magnet motor, which is described in the following with reference to the attached drawings:

referring to fig. 1 and fig. 2, a permanent magnet motor according to the present invention includes: axis of rotation 1 and motor body 2, axis of rotation 1 wears to locate motor body 2, and with components and parts in the motor body 2 are fixed.

The rotating shaft 1 comprises a front shaft 11, a rear shaft 12 and a rotating commutator 13, the front shaft 11 penetrates through the motor body 2 and is fixed with components in the motor body 2, the front shaft 11 is coaxially connected with the rear shaft 12 through the rotating commutator 13, and the rotating commutator 13 enables the rotation direction of the front shaft 11 to be opposite to that of the rear shaft 12.

The front shaft 11 is provided with a front heat dissipation fan 111, and the rear shaft 12 is provided with a rear heat dissipation fan 121.

A front bevel gear 131, a reversing bevel gear 132 and a rear bevel gear 133 are arranged in the rotary reverser 13, the front bevel gear 131 and the rear bevel gear 133 are respectively coaxially connected with the front shaft 11 and the rear shaft 12, and the front bevel gear 131 and the rear bevel gear 133 are meshed with the reversing bevel gear 132.

The rotation direction of the front shaft 11 and the rear shaft 12 is opposite by rotating the commutator 13, and the rotation direction of the front heat dissipation fan 111 and the rear heat dissipation fan 121 is opposite, so that one fan blows air to the motor, and the other fan sucks air to form an air duct, thereby enhancing the heat dissipation effect.

The motor is characterized in that a plurality of metal heat conducting sheets 21 are arranged on the outer surface of the motor main body 2, heat dissipation pieces 22 are arranged between the metal heat conducting sheets 21, cooling liquid is filled in the heat dissipation pieces 22, the heat dissipation pieces 22 are made of heat conducting materials and are in contact with the metal heat conducting sheets 21, and the heat dissipation pieces 22 absorb heat conducted out by the metal heat conducting sheets 21, so that heat dissipation is achieved.

The heat dissipation member 22 is provided with a plurality of through holes 221 along the axial direction of the rotating shaft 1, so that the air blown by the front heat dissipation fan 111 and the rear heat dissipation fan 121 can pass through the through holes 221 conveniently to take away heat, and a better heat dissipation effect is achieved.

According to the permanent magnet motor, the plurality of metal heat conducting fins are arranged on the outer surface of the motor main body, the heat dissipation parts are arranged among the metal heat conducting fins and filled with cooling liquid, and the heat dissipation parts absorb heat conducted out by the metal heat conducting fins, so that heat dissipation is realized, and the permanent magnet motor is simple in structure, low in cost, high in practicability and suitable for popularization and use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A permanent magnet electric machine, comprising: the rotating shaft penetrates through the motor main body and is fixed with components in the motor main body, a plurality of metal heat conducting sheets are arranged on the outer surface of the motor main body, heat dissipation pieces are arranged between the metal heat conducting sheets, cooling liquid is filled in the heat dissipation pieces, the heat dissipation pieces are made of heat conduction materials and are in contact with the metal heat conducting sheets, and the heat dissipation pieces absorb heat conducted out by the metal heat conducting sheets, so that heat dissipation is achieved.

2. The permanent magnet motor according to claim 1, wherein a front heat dissipation fan and a rear heat dissipation fan are provided on the rotating shaft, and the front heat dissipation fan and the rear heat dissipation fan are respectively located at both ends of the motor main body.

3. The permanent magnet motor of claim 2 wherein said rotating shaft comprises a front shaft, a rear shaft and a rotating commutator, said front shaft passing through said motor body and being fixed to components in said motor body, said front shaft and said rear shaft being coaxially connected by said rotating commutator, said rotating commutator causing said front shaft and said rear shaft to rotate in opposite directions.

4. The permanent magnet motor of claim 3 wherein said rotating commutator has a front bevel gear, a reversing bevel gear and a rear bevel gear, said front bevel gear and said rear bevel gear being coaxially connected to said front shaft and said rear shaft, respectively, said front bevel gear and said rear bevel gear being engaged with said reversing bevel gear.

5. The permanent magnet motor according to claim 3, wherein the heat dissipating member is provided with a plurality of through holes along an axial direction of the rotating shaft, so that wind from the front heat dissipating fan and the rear heat dissipating fan can pass through the through holes to take away heat, thereby achieving a better heat dissipating effect.