CN111245139A

CN111245139A - Outer rotor motor shell

Info

Publication number: CN111245139A
Application number: CN202010175720.7A
Authority: CN
Inventors: 张陈曦; 赵又群; 邓汇凡; 林棻; 李宇昊; 王秋伟
Original assignee: Nanjing University of Aeronautics and Astronautics
Current assignee: Nanjing University of Aeronautics and Astronautics
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-06-05
Anticipated expiration: 2040-03-13
Also published as: CN111245139B

Abstract

The invention discloses an outer rotor motor shell which comprises an annular shell, wherein an annular outer lining is arranged on the outer ring of the shell, the outer lining and the shell are concentrically arranged, a plurality of flow deflectors are arranged in a gap between the outer lining and the shell and are circumferentially arranged along the outer surface of the shell, the flow deflectors are in a semi-parabolic shape, the bottoms of the flow deflectors are connected with the outer surface of the shell, and the tops of the flow deflectors are tangent to the inner surface of the outer lining; a detachable sealing cover is arranged on one side of the shell; according to the outer rotor motor shell, the outer lining is arranged on the outer ring of the shell, the plurality of semi-parabolic flow deflectors are arranged between the outer lining and the shell, the flow deflectors are connected with the shell and absorb heat of the shell, and in addition, the flow deflectors are arranged to be semi-parabolic, so that when the outer rotor motor rotates, a gust of air flow blown to the outside can be formed, the heat dissipation of the motor is facilitated, the use safety of the motor is improved, and the outer rotor motor shell has a wide application prospect.

Description

Outer rotor motor shell

Technical Field

The invention belongs to the technical field of motor shells, and particularly relates to an outer rotor motor shell with a quick ball heat dissipation effect.

Background

The motor can generate heat when in work, the shell of the common outer rotor motor considers the limitation of self rotation and working environment, and the shell of the common outer rotor motor does not have a grid structure to increase the heat dissipation area and is internally provided with a fan to assist in heat dissipation. Under general conditions, heat emitted by the motor can be dissipated to the outside, but when the motor works under a large load for a long time, the temperature often cannot be timely reduced, and even the safety of workers and equipment is affected in severe cases. The number of parts of the structure is large, and the number of parts is increased, so that the whole mechanism becomes heavy and is not beneficial to external use.

The patent application with the publication number of CN101752935A of the invention in China discloses a shell structure of an outer rotor motor and a rotor part manufactured by utilizing the shell, wherein the shell structure comprises an annular outer side wall and an end cover positioned at the bottom end of the side wall, a cavity is formed in the middle, an opening is formed by opening the top, a coupling seat is formed in the center of the end cover, a key groove connected with a motor transmission shaft is arranged in the center of the coupling seat, the coupling seat is connected with the annular outer side wall by a plurality of fan blades, and an air inlet is formed between two adjacent fan blades; although this shell structure can form the air intake between the fan blade and dispel the heat to motor winding, the ventilation hole is rectangular form again on the surface of end cover, and the air intake forms mutual interference's air current during the rotation easily, leads to the circulation of air not smooth, and even the air backward flow leads to the radiating effect not good.

Disclosure of Invention

In order to solve the problem that the heat dissipation effect of the existing outer rotor motor is not ideal, the invention provides an outer rotor motor shell with a good heat dissipation effect.

In order to achieve the purpose, the invention provides the technical scheme that: an outer rotor motor shell comprises an annular shell, wherein an annular outer lining is arranged on the outer ring of the shell, the outer lining and the shell are concentrically arranged, a plurality of flow deflectors are arranged in a gap between the outer lining and the shell and circumferentially arranged along the outer surface of the shell, the flow deflectors are in a semi-parabolic line shape, the bottoms of the flow deflectors are connected with the outer surface of the shell, and the tops of the flow deflectors are tangent to the inner surface of the outer lining; a detachable cover is installed on one side of the shell.

On the basis of the technical scheme, as a preferable technical scheme, a plurality of guide vanes are further arranged between the guide vane and the shell, one end of each guide vane is connected with the outer surface of the shell, and the other end of each guide vane is connected with the inner surface of the guide vane; and a gap is reserved between every two adjacent guide sheets.

In the above technical solution, further, the guide vane is disposed obliquely, one side of the guide vane, which is away from the cover, is inclined to the bottom of the guide vane, and one side of the guide vane, which is close to the cover, is inclined to the top of the guide vane.

Further, the guide pieces are all arranged in parallel.

In the above technical solution, preferably, the number of the guide pieces is 2 to 5.

In addition, in the above technical solution, the sealing cover is in an arc surface.

Furthermore, a plurality of bulges used for increasing the surface area are arranged on the outer surface of the sealing cover, and the bulges and the sealing cover are integrally formed.

Optionally, the protrusions are V-shaped, and the bottoms of all the V-shapes face the center of the sealing cover and are uniformly distributed on the outer surface of the sealing cover.

Compared with the prior art, the invention has the beneficial effects that: this external rotor electric machine shell is through setting up the outer lining at the casing outer lane, set up the water conservancy diversion piece of a plurality of semiparabolic linear between outer lining and casing, the water conservancy diversion piece all is connected with the casing, absorb the heat of casing, the protruding cambered surface of V font of closing cap is of value to the increase heat radiating area, in addition, set the water conservancy diversion piece to semiparabolic linear for when external rotor electric machine rotated, can form one array of air currents that blows to the external world, do benefit to the motor heat dissipation, improve the security that the motor used, wide application prospect has.

Drawings

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 and 4 are structural views of a guide vane and a guide vane according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the invention provides an outer rotor motor casing, which comprises an annular casing 1, an annular outer liner 2 is arranged on the outer ring of the casing 1, the outer liner 2 is concentrically arranged with the casing 1, a plurality of flow deflectors 3 are arranged in a gap between the outer liner 2 and the casing 1, and the flow deflectors 3 play a role in guiding air flow, as shown in fig. 1 and 3, the flow deflectors 3 are in a semi-parabolic shape, the bottoms of the flow deflectors 3 are connected with the outer surface of the casing 1, the tops of the flow deflectors 3 are tangent to the inner surface of the outer liner 2, and all the flow deflectors 3 are circumferentially arranged along the outer surface of the casing, when the outer rotor is installed, the selection direction of the rotor is the same as the orientation of the flow deflectors, so that the flow deflectors can play an effective flow guiding effect.

On the basis of the above technical solution, as an optional embodiment, a plurality of guide vanes 4 are further disposed between the flow deflector 3 and the casing 1, as shown in fig. 2-4, the guide vanes 4 are disposed between the casing 1 and the flow deflector 3, one end of each guide vane 4 is connected to the outer surface of the casing 1, and the other end is connected to the inner surface of the flow deflector 3; and a gap is reserved between every two adjacent guide blades 4. The guide sheet 4 can also absorb the heat of the shell 1 and play a role in guiding the air flow, when the motor rotates, the air flow rotates along the rotation direction of the motor, so that the flowing speed of the air flow can be increased, meanwhile, the air flow interference can be prevented, and the heat dissipation speed is improved.

The number of the specific guide pieces 4 is generally 2-5, 3 guide pieces are adopted in the embodiment and are arranged in parallel, so that the air flow can be ensured to be unimpeded and flow to the maximum extent, the guide pieces 4 are obliquely arranged, one side, away from the sealing cover, of each guide piece 4 is inclined to the bottom of the corresponding guide piece, and one side, close to the sealing cover, of each guide piece 4 is inclined to the top of the corresponding guide piece. The structure that water conservancy diversion piece and guide vane combined together is similar to the bamboo shoot limit of bamboo shoots, and the purpose that sets up like this improves with interior hub 1's contact, increase the heat ability, and second guarantees that the running direction of air current is the same with the running direction of motor, can not take place the refluence simultaneously by the flow velocity that increases like this, and maximum dispels the heat.

As shown in fig. 1, a detachable cover 5 is installed on one side of the housing 1, and in this embodiment, the cover 5 is installed on one side of the housing 1 by screws, it should be noted that, although in this embodiment, the cover is fixed by screws, other types of connection methods are within the scope of the present invention, such as screw connection, snap connection, and the like. The closing cap 5 is the cambered surface, and closing cap 5 surface is provided with a plurality of archs 51 that are used for increasing the surface area, protruding 51 with closing cap integrated into one piece, protruding 51 are the V font, and the bottom of all V fonts is towards the center of closing cap 5, and even subsection is at the surface of closing cap, and the protruding structure of closing cap surface increase is similar to cactus's surface, so not only can increase the mechanical strength of closing cap, can increase the surface area of closing cap simultaneously to increase the area of contact of closing cap and outside air, improve the radiating rate.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An outer rotor motor housing which characterized in that: the guide vane structure comprises an annular shell, wherein an annular outer lining is arranged on the outer ring of the shell, the outer lining and the shell are concentrically arranged, a plurality of guide vanes are arranged in a gap between the outer lining and the shell and are circumferentially arranged along the outer surface of the shell, the guide vanes are in a semi-parabolic line shape, the bottoms of the guide vanes are connected with the outer surface of the shell, and the tops of the guide vanes are tangent to the inner surface of the outer lining; a detachable cover is installed on one side of the shell.

2. The outer rotor motor housing of claim 1, wherein: a plurality of guide vanes are arranged between the guide vane and the shell, one end of each guide vane is connected with the outer surface of the shell, and the other end of each guide vane is connected with the inner surface of the guide vane; and a gap is reserved between every two adjacent guide sheets.

3. The outer rotor motor housing of claim 2, wherein: the guide piece is obliquely arranged, one side, far away from the sealing cover, of the guide piece is inclined to the bottom of the guide piece, and one side, close to the sealing cover, of the guide piece is inclined to the top of the guide piece.

4. The outer rotor motor housing of claim 2, wherein: the guide pieces are all arranged in parallel.

5. The outer rotor motor casing of any one of claims 2-4, wherein: the number of the guide pieces is 2-5.

6. The outer rotor motor housing of claim 1, wherein: the sealing cover is in a cambered surface.

7. The outer rotor motor housing of claim 1 or 6, wherein: the outer surface of the sealing cover is provided with a plurality of bulges used for increasing the surface area, and the bulges and the sealing cover are integrally formed.

8. The outer rotor motor housing of claim 7, wherein: the bulges are in a V shape, the bottoms of all the V shapes face to the center of the sealing cover, and the V shapes are uniformly distributed on the outer surface of the sealing cover.