CN216981659U

CN216981659U - Internal air cooling structure of alternating current motor

Info

Publication number: CN216981659U
Application number: CN202123196219.8U
Authority: CN
Inventors: 李世旺; 余建恒
Original assignee: Wuhu Zhaoli Motor Co ltd
Current assignee: Wuhu Zhaoli Motor Co ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-07-15
Anticipated expiration: 2031-12-16

Abstract

The utility model discloses an internal air cooling structure of an alternating current motor, which comprises a double-layer casing, a rotor and an air cooling braking part, wherein the rotor is rotatably connected in the double-layer casing; the outside of the rotor is provided with a stator fixed with the inner cavity wall of the double-layer shell, and two ends of the outside of the rotor are also vertically provided with a liquid cooling part A. The utility model aims at solving the problems that the reasonable cooling structure is not arranged in the motor in the prior art, the existing structure is not beneficial to heat dissipation, the motor has poor reliability in the use process, and the like.

Description

Internal air cooling structure of alternating current motor

Technical Field

The utility model relates to the technical field of motors, in particular to an internal air cooling structure of an alternating current motor.

Background

The existing household appliances usually adopt a motor to provide power, the motor is an electromagnetic device which realizes electric energy conversion or transmission according to the law of electromagnetic induction, the motor can generate a large amount of heat in the running state, a reasonable cooling structure is not arranged in the existing alternating current motor, most of the heat is transmitted to a motor shell and then transmitted to an external appliance body, and certain potential safety hazard is brought in the use process; and current cooling structure is unfavorable for thermal giving off, and the motor is under the state of overload work for a long time, and the reliability often can be very poor, can influence the work efficiency of motor, reduces the practical life of electrical apparatus.

Aiming at the technical problems, the utility model discloses an internal air cooling structure of an alternating current motor, which has the advantages of quickly discharging heat energy in a cavity, reducing the case overheating condition caused by heat energy transfer, being beneficial to heat dissipation, enhancing the reliability of the motor in the using process and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an internal air cooling structure of an alternating current motor so as to solve the problems that a reasonable cooling structure is not arranged in the motor in the prior art, the prior structure is not beneficial to heat dissipation, and the reliability of the motor in the use process is poor. The utility model has the advantages of quickly discharging heat energy in the cavity, reducing the case overheating caused by heat energy transfer, being beneficial to heat dissipation, enhancing the reliability of the motor in the use process and the like.

The utility model is realized by the following technical scheme: the utility model discloses an internal air cooling structure of an alternating current motor, which comprises a double-layer casing, a rotor and an air cooling braking part, wherein the rotor is rotatably connected in the double-layer casing; a stator fixed with the inner cavity wall of the double-layer shell is arranged outside the rotor, and liquid cooling parts A are vertically arranged at two ends outside the rotor; double-deck casing comprises casing B and fixing at the outside casing A of casing B, forms between casing B, the casing A and reserves the chamber, and casing B, casing A surface all offer be used for the inside ventilation groove of intercommunication fan housing, and liquid cooling portion A outer wall is fixed with casing B inner wall, is equipped with liquid cooling portion B in reserving the chamber.

Furthermore, in order to facilitate uniform absorption of the temperature of the inner shell and avoid heat energy from being transferred to the outer shell, the liquid cooling part B wraps the outer wall of the shell B; liquid cooling portion B includes that inside is hollow structure's cooling piece, still includes that the equidistance wears to establish the heat conduction fin who fixes at the cooling piece inner wall, and heat conduction fin one side is fixed with casing B outer wall inlay card, the opposite side runs through the cooling piece inner wall and extends to its inner chamber in, and the outside cladding of cooling piece inner wall and heat conduction fin junction has the package piece that leaks.

Furthermore, in order to be able to absorb heat energy to the maximum extent through air cooling, the liquid cooling part A is of an annular structure with a hollow interior, a plurality of air penetrating holes for ventilation are also preset on the surface of the liquid cooling part A, and at least two heat absorption lugs with staggered positions are integrally formed in the air penetrating holes.

Furthermore, in order to facilitate the heat transfer to the external heat exchange device, a cooling liquid inlet pipe and a cooling liquid outlet pipe are reserved in the liquid cooling part A and the liquid cooling part B, and both the cooling liquid inlet pipe and the cooling liquid outlet pipe penetrate through the double-layer shell and extend to the outside of the double-layer shell.

Furthermore, in order to ensure that the whole motor operates stably, two ends of the rotor are respectively connected with the double-layer shell in a rotating mode through a bearing and a thrust bearing.

The utility model has the following advantages:

(1) the double-layer casing with the reserved cavity inside is arranged, the two liquid cooling parts A sleeved outside the rotor are also fixed with the outer layer casings of the casings on the two sides, the liquid cooling part B used for absorbing the heat energy of the inner layer casing is also arranged between the two liquid cooling parts A, the liquid cooling part B clamps the heat conducting fins with the inner walls arranged at equal intervals into the outer surface of the inner layer casing, the inner layer casing absorbing the internal heat energy can be cooled by utilizing cooling liquid flowing inside, the quick absorption of the heat energy can be better facilitated by the clamping operation on the outer surface of the inner layer casing, and the heat absorption area is greatly increased;

(2) the surface of a ring-shaped cooling part of a liquid cooling part A is provided with a plurality of air penetrating holes for air circulation in a cavity, a plurality of heat absorption lugs are integrally formed in the air penetrating holes and are communicated with an inner cavity of the cooling part, air needs to pass through the air penetrating holes when entering and exiting a double-layer shell, when the air passes through the surfaces of the heat absorption lugs in the air penetrating holes, heat energy is absorbed by the heat absorption lugs and is conducted to cooling liquid, and finally the air is taken out of a heat exchange device outside a machine body through circulation of the cooling liquid for heat exchange and then is recycled, and meanwhile, the heat energy on the surfaces of the liquid cooling part A and the liquid cooling part B can be quickly taken out through the air;

(3) the utility model uses the mutual cooperation of air cooling and liquid cooling, so that the wind energy entering and exiting the motor can more quickly take out the heat in the cavity, and the design of the double-layer casing avoids the situation that the heat energy is directly transmitted to the outer wall of the motor to avoid scalding caused by continuous use.

Drawings

FIG. 1 is a schematic cross-sectional view of a dual-layer housing of the present invention;

FIG. 2 is a schematic view of the structure of the liquid cooling section A of the present invention;

FIG. 3 is a schematic view of the structure of the liquid cooling section B of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 6 is a schematic structural view of a housing A according to the present invention;

fig. 7 is a schematic structural diagram of a housing B according to the present invention.

In the figure: 1. a double-layer housing; 2. a stator; 3. a rotor; 4. a heat conductive fin; 5. a heat absorbing bump; 6. a fan housing; 7. a leakage-blocking packet block; 8. a wind penetration hole; 9. an air-cooled brake member; 10. a liquid cooling section A; 11. a liquid cooling section B; 12. a ventilation slot; 13. a shell A; 14. and a shell B.

Detailed Description

In the description of the present invention, words similar to "front", "rear", "left", "right", etc. indicating directions or positional relationships are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

The utility model provides a technical scheme that: an internal air cooling structure of an alternating current motor is shown in figures 1 to 7 and comprises a double-layer casing 1, a rotor 3 rotatably connected in the double-layer casing 1 and an air cooling braking part 9, wherein the rotor 3 movably penetrates through the double-layer casing 1, two ends of the rotor 3 extend to the outside of the double-layer casing 1, one end of the rotor 3 is connected with an output shaft rod, the other end of the rotor is provided with the air cooling braking part 9, an air cover 6 fixed with the double-layer casing 1 is covered on the air cooling braking part 9, and an air inlet and outlet hole for ventilation is formed in the surface of the air cover 6; the stator 2 fixed with the inner cavity wall of the double-layer casing 1 is arranged outside the rotor 3, and the liquid cooling part A10 is also vertically arranged at the two ends outside the rotor 3; double-deck casing 1 comprises casing B14 and the casing A13 of fixing in casing B14 outside, forms between casing B14, the casing A13 and reserves the chamber, and casing B14, casing A13 surface all offer be used for communicating the inside draft slot 12 of fan housing 6, and liquid cooling portion A10 outer wall is fixed with casing B14 inner wall, is equipped with liquid cooling portion B11 in reserving the chamber.

As shown in fig. 1, 3 and 4, the liquid cooling part B11 is wrapped on the outer wall of the shell B14; liquid cooling portion B11 includes that inside is hollow structure's cooling piece, still wear to establish the heat conduction fin 4 of fixing at the cooling piece inner wall including the equidistance, heat conduction fin 4 one side is fixed with casing B14 outer wall inlay card, the opposite side runs through the cooling piece inner wall and extends to in its inner chamber, the outside cladding of cooling piece inner wall and the heat conduction fin 4 junction has and hinders hourglass package piece 7, be convenient for evenly absorb the inner shell temperature, avoid heat energy transfer to the shell on, it can avoid the coolant liquid leakage condition that outside striking caused to hinder hourglass package piece 7.

As shown in fig. 1, 2 and 5, the liquid cooling portion a10 is a ring structure with a hollow interior, a plurality of air holes 8 for ventilation are preset on the surface of the liquid cooling portion a10, at least two heat absorption protrusions 5 with staggered positions are integrally formed in the air holes 8, and on the premise that the operation of the rotor 3 is not affected, the heat absorption protrusions 5 can be passed through in the air circulation process in the cavity, and the heat energy can be absorbed to the maximum extent by the heat absorption protrusions 5.

As shown in fig. 1, 2 and 3, a coolant inlet pipe and a coolant outlet pipe are reserved in each of the liquid-cooling part a10 and the liquid-cooling part B11, and both the coolant inlet pipe and the coolant outlet pipe penetrate through the double-layer casing 1 and extend to the outside of the double-layer casing, so that heat can be conveniently transported to an external heat exchange device.

As shown in figure 1, two ends of the rotor 3 are respectively connected with the double-layer casing 1 through a bearing and a thrust bearing in a rotating way, so that the whole motor operates stably.

The principle of the utility model is as follows: external air enters the double-layer shell 1 from the air cover 6, the air-cooled brake member 9 rotates at a high speed along with the rotor 3 after the motor is started, gas containing heat energy in a cavity of the double-layer shell 1 is brought out through negative pressure in the rotating process, external air is absorbed and enters the double-layer shell 1, a cooling liquid inlet pipe and a cooling liquid outlet pipe are communicated with an external heat exchange device, cooling liquid circulates and works, a liquid cooling part B11 used for absorbing heat energy of the inner layer shell is arranged between two liquid cooling parts A10 sleeved outside the rotor 3, the liquid cooling part B11 clamps heat conduction fins 4 with the inner walls arranged at equal intervals on the outer surface of the inner layer shell, the inner layer shell absorbing the internal heat energy can be cooled through the cooling liquid flowing inside, the heat energy can be better and rapidly absorbed by clamping on the outer surface of the inner layer shell, and the heat absorption area is greatly increased; a plurality of air penetrating holes 8 used for air circulation in the cavity are also preset in the surface of the annular cooling part of the liquid cooling part A10, a plurality of heat absorption lugs 5 are integrally formed in the air penetrating holes 8, the heat absorption lugs 5 are communicated with the inner cavity of the cooling part, air needs to pass through the air penetrating holes 8 when passing in and out of the double-layer shell 1, when the air passes through the surfaces of the heat absorption lugs 5 in the air penetrating holes 8, heat energy is absorbed and conducted to cooling liquid through the heat absorption lugs 5, and finally the air is taken out of an external heat exchange device of the machine body through circulation of the cooling liquid to be recycled after heat exchange, and the liquid cooling part A10 can be also taken out through the air, the heat energy on the surface of the liquid cooling part B11 can be quickly taken out, the heat extraction performance of the motor can be greatly improved through water-cooling matching, and the use reliability of the motor is enhanced.

Claims

1. The internal air cooling structure of the alternating current motor is characterized by comprising a double-layer casing, a rotor and an air cooling braking part, wherein the rotor is rotatably connected in the double-layer casing; a stator fixed with the inner cavity wall of the double-layer shell is arranged outside the rotor, and liquid cooling parts A are vertically arranged at two ends of the outside of the rotor; the double-layer casing comprises casing B and the casing A of fixing in casing B outside, form between casing B, the casing A and reserve the chamber, and casing B, casing A surface all offer and be used for the inside ventilation groove of intercommunication fan housing, liquid cooling portion A outer wall is fixed with casing B inner wall, it is equipped with liquid cooling portion B in the chamber to reserve.

2. The internal air cooling structure of the alternating current motor according to claim 1, wherein the liquid cooling part B is wrapped on the outer wall of the shell B; liquid cooling portion B includes that inside is hollow structure's cooling piece, still includes that the equidistance wears to establish the heat conduction fin who fixes at the cooling piece inner wall, and heat conduction fin one side is fixed with casing B outer wall inlay card, the opposite side runs through the cooling piece inner wall and extends to its inner chamber in, and the outside cladding of cooling piece inner wall and heat conduction fin junction has the package piece that leaks.

3. The internal air cooling structure of an ac motor according to claim 1, wherein the liquid cooling portion a is a ring structure with a hollow interior, a plurality of ventilation holes are preset on the surface of the liquid cooling portion a for ventilation, and at least two heat absorption protrusions with staggered positions are integrally formed in the ventilation holes.

4. The internal air cooling structure of an ac motor according to claim 1, wherein a coolant inlet pipe and a coolant outlet pipe are reserved in each of the liquid cooling portion a and the liquid cooling portion B, and both the coolant inlet pipe and the coolant outlet pipe penetrate through the double-layer casing and extend to the outside of the double-layer casing.

5. The internal air cooling structure of an ac motor according to claim 1, wherein both ends of said rotor are rotatably connected to the double-layered casing through bearings and thrust bearings, respectively.