CN210724470U

CN210724470U - Heat abstractor for electric motor rotor

Info

Publication number: CN210724470U
Application number: CN201921333783.XU
Authority: CN
Inventors: 李静洁; 张伟; 高月华; 郝慧鹏; 王阳; 李倩; 单岳明
Original assignee: Hebei Electric Motor Co ltd
Current assignee: Hebei Electric Motor Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-06-09
Anticipated expiration: 2029-08-16

Abstract

A heat dissipation device for a motor rotor comprises a rotating shaft, a rotor and a heat dissipation ring; the middle part of the rotating shaft is provided with a rotor, both sides of the rotor are provided with heat dissipation rings, and the rotor is also provided with a rotor end ring; the heat dissipation ring is sleeved on the rotating shaft in a hot mode; one end of the heat dissipation ring is arranged in the rotor end ring; the heat dissipation ring comprises a heat dissipation ring shaft sleeve, heat dissipation ring fan blades and a heat dissipation ring end plate, wherein the heat dissipation ring shaft sleeve, the heat dissipation ring fan blades and the heat dissipation ring end plate are connected into a whole and are sleeved on the rotating shaft; the heat dissipation ring fan blades are assembled in the rotor end ring; and the heat dissipation ring end plate is attached to the rotor end ring. The utility model discloses rational in infrastructure, the radiating efficiency is high, and can effectively reduce the temperature between rotor and the bearing, avoids appearing the bad damage of motor that causes because of the high temperature.

Description

Heat abstractor for electric motor rotor

Technical Field

The utility model relates to a rotor heat abstractor suitable for compact structure type motor belongs to motor technical field.

Background

With the integration and optimization design of the motor, the high-integration motor is also improved as an important ring in modern industrial products. Among them, the compact motor is widely used in various equipments due to its characteristics of dense structure, high efficiency, etc., thereby effectively promoting the rapid development of the highly integrated motor. However, since the internal structure of the motor is distributed compactly, the heat dissipation function of the motor must be improved. At present, most of rotor wind wings of the motor are usually arranged outside an end ring, the length of the rotor is increased by the structural design mode, and the compact design requirement of the motor cannot be well met. In addition, because the motor has a compact internal structure and a short distance between the rotor and the bearing, the rotor generates heat to obviously affect the bearing, and the bearing is easily damaged due to overhigh temperature, thereby further affecting the service life of the motor. Therefore, how to enable the motor to perform more efficient heat dissipation under the condition of more compact structure becomes a hot point of research on the compact structure motor at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a rational in infrastructure, radiating efficiency high, and can effectively reduce the heat abstractor for electric motor rotor of temperature between rotor and the bearing.

The problem is solved through following technical scheme:

a heat dissipation device for a motor rotor comprises a rotating shaft, a rotor and a heat dissipation ring; the middle part of the rotating shaft is provided with a rotor, both sides of the rotor are provided with heat dissipation rings, and the rotor is also provided with a rotor end ring; the heat dissipation ring is sleeved on the rotating shaft in a hot mode; one end of the heat dissipation ring is arranged in the rotor end ring; the heat dissipation ring comprises a heat dissipation ring shaft sleeve, heat dissipation ring fan blades and a heat dissipation ring end plate, wherein the heat dissipation ring shaft sleeve, the heat dissipation ring fan blades and the heat dissipation ring end plate are connected into a whole and are sleeved on the rotating shaft; the heat dissipation ring fan blades are assembled in the rotor end ring; and the heat dissipation ring end plate is attached to the rotor end ring.

Above-mentioned heat abstractor for motor rotor, the cooling ring flabellum sets up to 8 ~ 12, and it even interval sets up on the cooling ring axle sleeve that distributes.

In the heat dissipation device for the motor rotor, the outer diameter of the heat dissipation ring end plate is the same as that of the rotor end ring; the heat dissipation ring end plate is of a petal type structure and is assembled with the heat dissipation ring fan blades to form a plurality of independent air path channels.

The utility model discloses an optimal design of heat dissipation ring can be controlled the heat dissipation condition of compact structure motor effectively to the cooperation is installed at the inside heat dissipation ring flabellum of rotor end links, has not only rationally utilized the motor inner space, can also increase rotor flabellum's radiating effect effectively, avoids appearing because of motor inner structure is comparatively compact, and leads to the rotor to generate heat the inside high temperature of motor that causes, influences the condition such as motor life. In addition, the heat dissipation ring also takes the dynamic balance function of the rotor into consideration, and the rotor balance ring and the heat dissipation ring are integrated into a whole by adopting a method of removing the weight and finding the balance, so that the problem that a balance part needs to be added in the traditional motor is effectively solved.

The utility model discloses rational in infrastructure, the radiating efficiency is high, and can effectively reduce the temperature between rotor and the bearing, avoids appearing the bad damage of motor that causes because of the high temperature.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a heat dissipating ring.

The reference numerals in the figures denote: 1. the rotor comprises a rotating shaft, 2. a rotor, 2-1. a rotor end ring, 3. a heat dissipation ring, 3-1. a heat dissipation ring shaft sleeve, 3-2. heat dissipation ring fan blades and 3-3. a heat dissipation ring end plate.

Detailed Description

Referring to fig. 1 and 2, the present invention includes a rotating shaft 1, a rotor 2 and a heat dissipating ring 3; a rotor 2 is arranged in the middle of the rotating shaft 1, heat dissipation rings 3 are arranged on two sides of the rotor 2, and a rotor end ring 2-1 is further arranged on the rotor 2; the heat dissipation ring 3 is sleeved on the rotating shaft 1 in a hot mode; one end of the heat dissipation ring 3 is arranged in the rotor end ring 2-1; the heat dissipation ring 3 comprises a heat dissipation ring shaft sleeve 3-1, heat dissipation ring fan blades 3-2 and a heat dissipation ring end plate 3-3, wherein the heat dissipation ring shaft sleeve 3-1, the heat dissipation ring fan blades 3-2 and the heat dissipation ring end plate 3-3 are connected into a whole and are sleeved on the rotating shaft 1.

In order to make the structure more compact, the heat dissipation ring fan blades 3-2 are assembled in the rotor end ring 2-1; and the heat dissipation ring end plate 3-3 is attached to the rotor end ring 2-1.

In order to better dissipate heat, the heat dissipation ring shaft sleeve 3-1, the heat dissipation ring fan blades 3-2 and the heat dissipation ring end plate 3-3 of the utility model all adopt cast aluminum technology.

In the utility model, the number of the heat dissipation ring fan blades 3-2 is 8-12, and the heat dissipation ring fan blades are evenly arranged on the heat dissipation ring shaft sleeve 3-1 at intervals. The number and the distribution of the fan blades 3-2 of the heat dissipation ring can be adjusted according to the design requirement of the motor, so that the heat dissipation requirement of the motor is met.

In order to better match the rotor for heat dissipation, the size of the fan blades 3-2 of the heat dissipation ring can be adjusted according to the inner space of the rotor end ring 2-1.

In the utility model, the outer diameter of the end plate 3-3 of the heat dissipation ring is the same as that of the end ring 2-1 of the rotor; the heat dissipation ring end plate 3-3 is of a petal type structure and is assembled with the heat dissipation ring fan blades 3-2 to form a plurality of independent air path channels, so that stagnation of hot air between the fan blades is avoided.

The utility model discloses a theory of operation does: in the utility model, the heat dissipation ring 3 adopts the aluminum casting process, which is beneficial to improving the heat dissipation efficiency; the heat dissipation ring 3 is sleeved on the rotating shaft in a hot mode, so that the heat conduction efficiency between the heat dissipation ring 3 and the rotor 2 and between the heat dissipation ring and the bearing 1-1 is improved to the maximum extent; the installation position of the fan blades 3-2 of the heat dissipation ring is arranged inside the rotor end ring 2-1, the internal space distribution of the motor is reasonably utilized, the heat dissipation effect of the rotor fan blades is met, the internal compact design requirement of the motor is met, and the high power density design of the motor is realized. And 8-12 cooling ring flabellum 3-2 sets up to, evenly distributed, and flabellum number and distribution are adjusted according to motor design demand, have improved the suitability. The outer diameter of the end plate 3-3 of the radiating ring is the same as that of the end ring 2-1 of the rotor, so that the heat conducting capacity is improved, and the petal type design is adopted to form a plurality of independent air path units in a matching manner, so that the effective heat transfer between the radiating ring and the end ring of the rotor is ensured, the heat conducting efficiency is greatly improved, and the stagnation of hot air between fan blades is effectively avoided; the size of the heat dissipation ring fan blade 3-2 can be adjusted according to the inner space of the rotor end ring 2-1.

Claims

1. A heat dissipation device for a motor rotor comprises a rotating shaft (1), a rotor (2) and a heat dissipation ring (3); a rotor (2) is arranged in the middle of the rotating shaft (1), heat dissipation rings (3) are arranged on two sides of the rotor (2), and a rotor end ring (2-1) is further arranged on the rotor (2); the heat dissipation ring (3) is sleeved on the rotating shaft (1) in a hot manner; one end of the heat dissipation ring (3) is arranged in the rotor end ring (2-1); the heat dissipation ring (3) comprises a heat dissipation ring shaft sleeve (3-1), heat dissipation ring fan blades (3-2) and a heat dissipation ring end plate (3-3), and is characterized in that the heat dissipation ring shaft sleeve (3-1), the heat dissipation ring fan blades (3-2) and the heat dissipation ring end plate (3-3) are connected into a whole and are sleeved on the rotating shaft (1); the heat dissipation ring fan blades (3-2) are assembled in the rotor end ring (2-1); the heat dissipation ring end plate (3-3) is attached to the rotor end ring (2-1).

2. The heat sink for motor rotor as claimed in claim 1, wherein the number of the heat dissipating ring blades (3-2) is 8-12, and the heat dissipating ring blades are uniformly spaced on the heat dissipating ring sleeve (3-1).

3. The heat sink for motor rotor according to claim 2, wherein the outer diameter of the end plate (3-3) of the heat sink ring is the same as the outer diameter of the rotor end ring (2-1); the heat dissipation ring end plate (3-3) is of a petal type structure, and is assembled with the heat dissipation ring fan blades (3-2) to form a plurality of independent air path channels.