CN210201641U

CN210201641U - Motor heat radiation structure

Info

Publication number: CN210201641U
Application number: CN201921370800.7U
Authority: CN
Inventors: Haojie Jiang; 蒋浩杰; Ting Wang; 王霆
Original assignee: Hengdian Group Innuovo Electric Co Ltd
Current assignee: Hengdian Group Innuovo Electric Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-03-27
Anticipated expiration: 2029-08-22

Abstract

The utility model aims at providing a better motor heat radiation structure of radiating effect. In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a motor heat radiation structure, is equipped with air intake and air outlet on the motor, be equipped with the pivot in the motor, the pivot rear end is fixed with the fan blade, the fan blade includes a plurality of blades, and a plurality of blades are the even interval setting of annular with pivot axis center and set up in pivot circumference outside, the air outlet is located the fan blade circumference outside, the air intake is located the air outlet front side, the motor is including being located the portion that closes of fan blade circumference outside, the air outlet set up in close the portion in, the distance between close portion circumference inner wall and fan blade circumference outside increases gradually along the pivot rotation direction by the one end of air outlet to the other end of air outlet.

Description

Motor heat radiation structure

Technical Field

The utility model relates to a motor, concretely relates to motor heat radiation structure.

Background

The motor is a power machine with wide application, converts electric energy into mechanical energy to drive various mechanical equipment to operate, in the process of converting the energy of the motor, a part of energy can be dissipated in a coil in a heat mode, the part of energy converted into heat can cause the motor to generate heat, and if the heat cannot be dissipated in time, the motor coil can be damaged in an insulation way to cause short circuit or other faults affecting the motor to generate so that the motor cannot operate normally; in order to ensure that the motor can normally operate, the motor shell is provided with heat dissipation ribs, and the tail part of a rotating shaft of the motor is also provided with heat dissipation fan blades, so that the temperature rise of the motor in the working process is controlled within a certain range. Wherein, be equipped with air inlet and gas outlet respectively on motor front end face and the rear end face, through axial compressor heat dissipation fan blade in order to realize the removal of air in order to dispel the heat.

However, in many situations, such as high temperature of the environment, frequent start/stop or forward/reverse rotation of the motor, long-term connection and operation of the motor, the heat dissipation structure cannot ensure the temperature of the motor to be controlled within the allowable temperature rise, and thus the motor cannot stably run for a long time.

Disclosure of Invention

The utility model aims at providing a better motor heat radiation structure of radiating effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a motor heat radiation structure, is equipped with air intake and air outlet on the motor, be equipped with the pivot in the motor, the pivot rear end is fixed with the fan blade, the fan blade includes a plurality of blades, and a plurality of blades are the even interval setting of annular with pivot axis center and set up in pivot circumference outside, the air outlet is located the fan blade circumference outside, the air intake is located the air outlet front side, the motor is including being located the portion that closes of fan blade circumference outside, the air outlet set up in close the portion in, the distance between close portion circumference inner wall and fan blade circumference outside increases gradually along the pivot rotation direction by the one end of air outlet to the other end of air outlet.

The fan blades rotate to drive air to move from the air inlet to the air outlet, so that air flows in the motor to take away heat; when the air moves to the rear end of the motor, the air moves to the air outlet along the space between the fan blade and the enclosing part. The setting of enclosing the portion of closing not only is used for the direction of air, encloses the distance (with the distance between the pivot) between portion inner wall and the fan blade and increases gradually to make hot-air can add up and produce the wind pressure together, so that hot-air's discharge, in order to realize more hot-air's discharge, in order to improve the radiating effect.

Preferably, the inner edge of the enclosing part is circular, and the axis of the enclosing part is eccentric with the axis of the fan blade. The above arrangement is convenient for guiding air and is also convenient for manufacturing, processing and assembling the motor.

Preferably, the fan blade comprises a blocking portion, the blocking portion is located on the axial rear side of the fan blade, the motor is provided with a circular groove which penetrates through the motor from front to back and is used for yielding the blocking portion, the outer edge of the blocking portion is circular, the blocking portion is located in the circular groove, and a gap is formed between the circumferential outer wall of the blocking portion and the circumferential inner groove wall of the circular groove. If no circular groove is arranged, a certain distance exists between the fan blade at the rear end of the motor and the axial inner wall of the motor, the discharge of hot air is influenced, and part of the hot air can move to the space between the fan blade and the axial inner wall of the motor. The arrangement makes the discharge of the hot air more smooth, so as to improve the discharge amount of the hot air.

Preferably, the vane outer edge is located circumferentially outside the blocking portion circumferential outer edge. The blades are used for guiding the hot air so as to reduce the influence of air entering the gap between the circular groove and the blocking part on the flowing direction of the hot air and ensure the flowing speed of the hot air.

Preferably, the rear ends of the outer edges of the blades are all provided with notches. The arrangement is used for avoiding the blocking of the fan blade during rotation.

Preferably, the rear end of the motor is provided with a guide block, the guide block is provided with an air outlet groove communicated with the air outlet, and the direction of the air outlet groove is the same as the rotation direction of the rotating shaft. The above arrangement improves the discharge effect of the hot air.

Preferably, the blades of the fan blade comprise an inner section and an outer section, the inner end of the outer section is connected with the inner section, and the outer end of the outer section extends towards the side far away from the rotating direction of the rotating shaft. The arrangement is used for further realizing the guiding of the hot air so as to improve the discharging effect of the hot air.

Preferably, the outer section is arc-shaped, and an arc opening of the outer section faces to a side far away from the rotation direction of the rotating shaft. The arrangement is used for better separating hot air between two adjacent blades so as to improve the discharge amount of the hot air and improve the heat dissipation effect.

Preferably, the motor rear end is equipped with rear end cap body and housing, the housing is located rear end cap body axial rear side, the circular slot set up in on the housing, enclose the portion of closing and set up on the rear end cap body or on the housing, the rear end cap body is formed with a plurality of front and back and runs through with the through groove that the gas passes through, be formed with the bearing room on the rear end cap body and fix through the bearing the pivot. The aforesaid sets up to be convenient for the utility model discloses the manufacturing assembly of motor.

Preferably, the circumferential inner side or the circumferential outer side of the enclosing part is provided with a shielding part, and the shielding part and the enclosing part are respectively arranged on the rear end cover body and the housing; the housing is fixed on the rear side of the rear end cover body through a buckle structure, the buckle structure comprises a male buckle and a female buckle, the male buckle is arranged on the enclosing portion, and the shielding portion is located on the circumferential outer side of the enclosing portion. The aforesaid sets up to be convenient for the utility model discloses the manufacturing assembly of motor.

The utility model has the advantages of the hot air discharge capacity is bigger to make the radiating effect better.

Drawings

Fig. 1 is a schematic structural diagram of an electric machine according to the present invention;

fig. 2 is an axial sectional view of the motor of the present invention;

fig. 3 is a radial cross-sectional view of the present invention;

FIG. 4 is a schematic structural view of the housing of the present invention;

fig. 5 is a schematic structural view of the rear end cap body according to the present invention;

fig. 6 is a schematic structural diagram of the fan blade of the present invention.

Detailed Description

The invention will be further described with reference to the drawings and the specific embodiments.

Shown by fig. 1 to 6, the utility model discloses a motor heat radiation structure is equipped with air intake 11 and air outlet 12 on the motor 1, is equipped with pivot 2 in the motor 1, and 2 rear ends in pivot are fixed with fan blade 3, and fan blade 3 includes a plurality of blades 31, and a plurality of blades 31 are and set up in the 2 circumference outsides of pivot with the even interval of annular at 2 axis centers in pivot, and air outlet 12 is located the 3 circumference outsides of fan blade, and air intake 11 is located air outlet 12 front sides.

The rear end of the motor 1 is provided with a rear end cover assembly, the rear end cover assembly comprises a rear end cover body 4 and a housing 5, the housing 5 is located on the axial rear side of the rear end cover body 4, the rear end cover body 4 is fixed with a shell 10 of the motor through a fastening screw, and the axial face of a front end cover body 13 on the front side of the shell 10 is provided with the air inlet 11. Wherein, an air inlet can also be arranged on the circumferential surface of the front end cover body 13 or the circumferential surface of the front end of the casing 10. The rear end cover body 4 is formed with a plurality of through grooves 41 which are penetrated back and forth for the gas to pass through, and the middle part of the rear end cover body 4 is formed with a bearing chamber 42 and fixes the rotating shaft 2 through a bearing 43. Rear end housing body 4 extends backward has encloses and closes portion 44, it is located the 3 circumference outsides of fan blade to enclose to close portion 44, the fan blade is located between housing 5 and the rear end housing body 4, housing 5 edge is formed with the shielding portion 51 of forward extension, housing 5 is fixed in the 4 rear sides of rear end housing body through buckle structure, buckle structure includes pin 45 and box 52, pin 45 sets up on enclosing a 44 circumference outer walls, box 52 sets up in housing 5, housing 5 is fixed so that shielding portion 51 is located encloses a circumference outside with rear end housing body 4, it all is formed with radial breach that runs through with shielding portion 51 and closes to enclose portion 44 and shielding portion 51 and constitute air outlet 12. The rear end cover assembly is provided with a guide block 53, the guide block 53 is provided with an air outlet groove communicated with the air outlet, and the orientation of the air outlet groove is the same as the rotation direction of the rotating shaft; the guide block 53 is divided into front and rear portions to be provided on the rear cover body 4 and the cover 5, respectively.

The inner edge and the outer edge of the enclosing part 44 are circular, the axis of the enclosing part 44 is eccentric to the axis of the fan blade 3, and the distance between the circumferential inner wall of the enclosing part 44 and the circumferential outer edge of the fan blade 3 gradually increases from one end of the air outlet 12 to the other end of the air outlet 12 along the rotating direction of the rotating shaft. In fig. 3, the rotation shaft is rotated in a clockwise manner as shown in the drawing.

The fan blade 3 further comprises a blocking portion 32, the blocking portion 32 is located on the axial rear side of the blade 31, the housing 5 of the motor is provided with a circular groove 54 which penetrates through the front and the rear to give way to the blocking portion 32, the outer edge of the blocking portion 32 is circular, the blocking portion 32 is located in the circular groove 54, and a gap is formed between the circumferential outer wall of the blocking portion 32 and the circumferential inner groove wall of the circular groove 54. Wherein, the middle part of the blocking part 32 is provided with an annular fixing part 33, the fixing part 33 is tightly matched at the rear end of the rotating shaft, and the blades 31 of the fan blade are fixed at the front side of the blocking part 32.

The outer edge of the blade 31 is located on the circumferential outer side of the circumferential outer edge of the blocking portion 32, notches 34 are formed at the rear ends of the outer edges of the blade 31, and a gap is formed between the rear end face of the outer edge of the blade 31 and the front end face of the housing 5. The blade 31 of the fan blade 3 comprises an inner section 311 and an outer section 312, the inner end of the outer section 312 is connected with the inner section 311, the outer end of the outer section 312 extends to the side far away from the rotation direction of the rotating shaft, the outer section 312 is arc-shaped, and the arc-shaped opening of the outer section 312 faces to the side far away from the rotation direction of the rotating shaft.

Claims

1. The utility model provides a motor heat radiation structure, is equipped with air intake and air outlet on its characterized in that motor, be equipped with the pivot in the motor, the pivot rear end is fixed with the fan blade, the fan blade includes a plurality of blades, and a plurality of blades are the even interval setting of annular with pivot axis center and set up in pivot circumference outside, the air outlet is located the fan blade circumference outside, the air intake is located the air outlet front side, the motor is including being located the portion of enclosing in the fan blade circumference outside, the air outlet set up in enclose in the portion, enclose the distance between a circumference inner wall and the fan blade circumference outside and increase gradually along the other end of pivot rotation direction by the one end of air outlet to air outlet.

2. The heat dissipation structure of an electric motor according to claim 1, wherein an inner edge of the enclosure portion is circular, and an axis of the enclosure portion is eccentric to an axis of the fan blade.

3. The heat dissipating structure of an electric motor according to claim 1, wherein the fan blade includes a blocking portion, the blocking portion is located at an axial rear side of the fan blade, the electric motor has a circular groove penetrating forward and backward to give way to the blocking portion, an outer edge of the blocking portion is circular, the blocking portion is located in the circular groove, and a gap is formed between an outer circumferential wall of the blocking portion and an inner circumferential wall of the circular groove.

4. The motor heat dissipation structure according to claim 3, wherein the blade outer edge is located circumferentially outside the blocking portion circumferential outer edge.

5. The heat dissipating structure for an electric motor according to claim 4, wherein the rear ends of the outer edges of the blades are formed with notches.

6. The heat dissipation structure of motor as claimed in claim 1, wherein the rear end of the motor is provided with a guide block, the guide block is formed with an air outlet slot communicated with the air outlet, and the air outlet slot is oriented in the same direction as the rotation direction of the rotation shaft.

7. The heat dissipation structure of the motor as claimed in claim 1 or 2, wherein the blades of the fan blade include an inner section and an outer section, the inner end of the outer section is connected to the inner section, and the outer end of the outer section extends to the side away from the rotation direction of the rotating shaft.

8. The heat dissipating structure of an electric motor according to claim 7, wherein the outer section has an arc shape, and an arc opening of the outer section faces a side away from a rotation direction of the rotation shaft.

9. The heat dissipation structure of an electric motor according to claim 3, wherein the rear end of the electric motor is provided with a rear end cap body and a housing, the housing is located at a rear side of the rear end cap body in an axial direction, the circular groove is formed in the housing, the enclosure portion is formed on the rear end cap body or on the housing, the rear end cap body is formed with a plurality of through grooves which are formed in a front-back direction and through which the air passes, and the rear end cap body is formed with a bearing chamber and fixes the rotating shaft through a bearing.

10. The motor heat dissipation structure of claim 9, wherein the circumferential inner side or the circumferential outer side of the enclosure portion is provided with a shielding portion, and the shielding portion and the enclosure portion are respectively disposed on the rear end cover body and the housing; the housing is fixed on the rear side of the rear end cover body through a buckle structure, the buckle structure comprises a male buckle and a female buckle, the male buckle is arranged on the enclosing portion, and the shielding portion is located on the circumferential outer side of the enclosing portion.