CN110943579A

CN110943579A - A motor stator coil cooling device

Info

Publication number: CN110943579A
Application number: CN201911379207.3A
Authority: CN
Inventors: 蒋彩峰; 周晓文; 王长江
Original assignee: Jiangxi Maxwell Technology Co Ltd
Current assignee: Jiangxi Maxwell Technology Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-03-31

Abstract

The invention discloses a heat dissipation device for a stator coil of a motor, which comprises a machine shell, wherein a stator core is fixedly connected to the inner surface of the machine shell, the stator iron core is fixedly connected with a stator tooth pole, the surface of the stator tooth pole is fixedly wound with a stator coil, stator slots are arranged between the stator coils, a casing cooling pipe is fixedly connected with the outer surface of the casing, one side of the cooling pipe of the machine shell is communicated with a water inlet pipe, one end of the water inlet pipe penetrates through the machine shell and extends into the machine shell, one end of the water inlet pipe is fixedly connected with a first clamping joint, one side of the first clamping joint is communicated with a coil cooling pipe, the surface of the coil cooling pipe is arranged in the stator slot, the invention arranges the coil cooling water pipe in the stator slot, can take away the heat that the stator coil gived off, coil condenser tube both ends are connected through the mode of joint, and convenient to detach clears away the incrustation scale wherein.

Description

Motor stator coil heat abstractor

Technical Field

The invention relates to the field of motor structure design, in particular to a motor stator coil heat dissipation device.

Background

Compared with the traditional electric excitation motor, the permanent magnet motor, especially the rare earth permanent magnet motor has simple structure and reliable operation; the mechanical property is good, and the torque property is excellent; the volume is small and the weight is light; the loss is small, and the efficiency is high; the shape and the size of the motor can be flexible and various, and the like. The fractional slot concentrated winding permanent magnet motor also has the advantages of small positioning torque and small torque fluctuation, so the application range is extremely wide and the fractional slot concentrated winding permanent magnet motor almost covers various fields of aerospace, national defense, industrial and agricultural production and daily life.

The existing fractional slot concentrated winding permanent magnet motor has low slot fullness rate due to the limitation of a winding machine, is not beneficial to improving the heat dissipation capacity of a stator coil, has no need of power density, and greatly limits the development of the fractional slot concentrated winding permanent magnet motor; the inner wall of the cooling water pipe of the partial fractional slot concentrated winding permanent magnet motor is easy to accumulate water scale, and is inconvenient to disassemble and clean.

Disclosure of Invention

The invention aims to provide a motor stator coil heat dissipation device, wherein a coil cooling water pipe is arranged in a stator slot, heat dissipated by a stator coil can be taken away, two ends of the coil cooling water pipe are connected in a clamping manner, so that disassembly can be realized, and the disassembly is convenient, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a heat sink for stator coil of motor is composed of a casing with a stator core fixed to its internal surface, the stator iron core is fixedly connected with a stator tooth pole, the surface of the stator tooth pole is fixedly wound with a stator coil, stator slots are arranged between the stator coils, a casing cooling pipe is fixedly connected with the outer surface of the casing, one side of the cooling pipe of the machine shell is communicated with a water inlet pipe, one end of the water inlet pipe penetrates through the machine shell and extends into the machine shell, one end of the water inlet pipe is fixedly connected with a first clamping joint, one side of the first clamping joint is communicated with a coil cooling pipe, the surface of the coil cooling pipe is arranged in the stator slot, one end of the coil cooling pipe is fixedly connected with a second clamping joint, one side of the second clamping joint is fixedly connected with a water outlet pipe, one end of the water outlet pipe penetrates through the machine shell, and one end of the water outlet pipe is communicated with the cooling pipe of the machine shell.

Preferably, a front end cover and a rear end cover are fixedly mounted on two sides of the shell through bolts respectively, an output shaft is rotatably connected to the middle of the front end cover through a bearing, and one end of the output shaft is rotatably connected to the rear end cover through a bearing.

Preferably, the surface of the output shaft is fixedly sleeved with a rotor core, the surface of the rotor core is fixedly connected with permanent magnets, and the permanent magnets are distributed on the surface of the rotor core in an annular array.

Preferably, rotor pressing rings are attached to two sides of the rotor core.

Preferably, the lower side of the machine shell is fixedly connected with a machine base, and four corners of the machine base are provided with mounting holes.

Preferably, a gap is provided between the coil cooling pipe and the stator coil.

Compared with the prior art, the invention has the beneficial effects that:

1. the cooling water enters the coil cooling water pipe from the shell cooling water pipe through the water inlet pipe, can take away the heat emitted by the coil, and then flows back to the shell cooling water pipe through the water outlet pipe without independently designing a cooling water circulation system;

2. coil condenser tube and inlet tube, outlet pipe are 90 settings, through screwed joint be not convenient for dismantle, coil condenser tube one end through first joint and advance water piping connection, the other end passes through second joint and goes out water piping connection to convenient to detach.

Drawings

FIG. 1 is a schematic side view of a stator core portion of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic diagram of a coil cooling tube structure according to the present invention.

In the figure: 1. a housing; 2. a stator core; 3. a stator tooth pole; 4. a stator coil; 5. a stator slot; 6. a housing cooling tube; 7. a water inlet pipe; 8. a first card connector; 9. a coil cooling tube; 10. a second card connector; 11. a water outlet pipe; 12. a front end cover; 13. a rear end cap; 14. an output shaft; 15. a rotor core; 16. a permanent magnet; 17. pressing a ring by a rotor; 18. a machine base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a motor stator coil heat abstractor, includes casing 1, for the ease of supporting casing 1, at 1 downside fixedly connected with frame 18 of casing, for the ease of installing casing 1, has seted up the mounting hole in 18 four corners of frame.

Fixed surface is connected with stator core 2 in

casing

1, 2 fixedly connected with stator tooth utmost point 3 in stator core, 3 fixed surface of stator tooth utmost point have stator coil 4 around rolling up, stator slot 5 has been seted up between

stator coil

4, 1 outer fixed surface of casing is connected with casing cooling tube 6, casing cooling tube 6 is used for giving casing 1 heat dissipation, 6 both ends intercommunications of casing cooling tube have cooling water circulation system, a circulation flow for the cooling water, 6 one side intercommunications of casing cooling tube have

inlet tube

7, 7 one ends of inlet tube run through casing 1 and extend inside casing 1, the first joint head 8 of 7 one end fixedly connected with of inlet tube, 8 one side intercommunications of first joint head have coil cooling tube 9, in order to make coil cooling tube 9 and stator coil 4 contactless, be provided with the clearance between coil cooling tube 9 and the stator coil 4. The surface of the coil cooling pipe 9 is arranged in the stator slot 5, one end of the coil cooling pipe 9 is fixedly connected with a second clamping connector 10, one side of the second clamping connector 10 is fixedly connected with a water outlet pipe 11, one end of the water outlet pipe 11 penetrates through the machine shell 1, and one end of the water outlet pipe 11 is communicated with the machine shell cooling pipe 6.

In order to facilitate the installation of the output shaft 14, a front end cover 12 and a rear end cover 13 are respectively fixedly installed on two sides of the machine shell 1 through bolts, the middle part of the front end cover 12 is rotatably connected with the output shaft 14 through a bearing, and one end of the output shaft 14 is rotatably connected with the rear end cover 13 through a bearing. The surface of the output shaft 14 is fixedly sleeved with a rotor core 15, the surface of the rotor core 15 is fixedly connected with permanent magnets 16, and the permanent magnets 16 are distributed on the surface of the rotor core 15 in an annular array. Rotor pressing rings 17 are tightly attached to two sides of the rotor core 15.

The working principle is as follows: cooling water gets into coil cooling tube 9 through inlet tube 7 in the casing cooling tube 6, can take away the heat that stator coil 4 distributed out, cooling water flows back to in casing cooling tube 6 through outlet pipe 11 afterwards, and the space in the make full use of stator slot 5 dispels the heat to stator coil 4, when piling up and reducing cooling efficiency because of the incrustation scale in coil cooling tube 9, can dismantle front end housing 12 and rear end housing 13, open first joint 8 and second joint 10, dismantle coil cooling tube 9, be convenient for detach the incrustation scale wherein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a motor stator coil heat abstractor, includes casing (1), its characterized in that: the stator cooling structure is characterized in that a stator core (2) is fixedly connected to the inner surface of the casing (1), a stator tooth pole (3) is fixedly connected to the stator core (2), a stator coil (4) is wound on the surface of the stator tooth pole (3), a stator groove (5) is formed between the stator coils (4), a casing cooling pipe (6) is fixedly connected to the outer surface of the casing (1), an inlet pipe (7) is communicated with one side of the casing cooling pipe (6), one end of the inlet pipe (7) penetrates through the casing (1) and extends into the casing (1), a first clamping connector (8) is fixedly connected to one end of the inlet pipe (7), a coil cooling pipe (9) is communicated with one side of the first clamping connector (8), the surface of the coil cooling pipe (9) is arranged in the stator groove (5), and a second clamping connector (10) is fixedly connected to one end of the coil cooling, and one side of the second clamping connector (10) is fixedly connected with a water outlet pipe (11), one end of the water outlet pipe (11) penetrates through the machine shell (1), and one end of the water outlet pipe (11) is communicated with the machine shell cooling pipe (6).

2. The heat sink for stator coil of motor as claimed in claim 1, wherein: the motor shell is characterized in that a front end cover (12) and a rear end cover (13) are fixedly mounted on two sides of the motor shell (1) through bolts respectively, an output shaft (14) is rotatably connected to the middle of the front end cover (12) through a bearing, and one end of the output shaft (14) is rotatably connected to the rear end cover (13) through the bearing.

3. The heat sink for stator coil of motor as claimed in claim 2, wherein: the surface of the output shaft (14) is fixedly sleeved with a rotor core (15), the surface of the rotor core (15) is fixedly connected with permanent magnets (16), and the permanent magnets (16) are distributed on the surface of the rotor core (15) in an annular array.

4. The heat sink for stator coil of motor as claimed in claim 3, wherein: and rotor pressing rings (17) are tightly attached to two sides of the rotor iron core (15).

5. The heat sink for stator coil of motor as claimed in claim 1, wherein: the motor is characterized in that a base (18) is fixedly connected to the lower side of the shell (1), and mounting holes are formed in four corners of the base (18).

6. The heat sink for stator coil of motor as claimed in claim 1, wherein: a gap is arranged between the coil cooling pipe (9) and the stator coil (4).