CN214177090U

CN214177090U - High-power water-cooling permanent magnet synchronous motor with heat dissipation function

Info

Publication number: CN214177090U
Application number: CN202022465672.3U
Authority: CN
Inventors: 王阳; 李静洁; 何向召; 卜艳红; 袁丽娟
Original assignee: Hebei Electric Motor Co ltd
Current assignee: Hebei Electric Motor Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-09-10
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses a high-power water-cooling permanent magnet synchronous motor with a heat dissipation function, which comprises a shaft, a bearing, a heat dissipation device and a rotor; the rotor is sleeved on the shaft, and the shafts at two ends of the rotor are respectively sleeved with a bearing; a heat dissipation device is arranged on the shaft between each bearing and the rotor; each heat dissipation device comprises a fixing plate and a fan blade; the fixing plate is a circular plate, and shaft holes penetrating through two end faces of the fixing plate are formed in the center of the fixing plate; the fixed plate is fixedly connected with the shaft through the shaft hole or is integrally arranged on the shaft; the two end faces of the fixing plate are uniformly and fixedly connected with a plurality of fan blades along the circumference of the fixing plate. The utility model discloses effectively reduced the temperature of rotor and bearing, avoided rotor and bearing to damage because of the high temperature, had characteristics such as the radiating efficiency is high, simple structure, easy and simple to handle.

Description

High-power water-cooling permanent magnet synchronous motor with heat dissipation function

Technical Field

The utility model relates to a high power water-cooling PMSM, especially a high power water-cooling PMSM with heat dissipation function.

Background

The motor is used as a basic power source of industrial production and is generally used in industrial production. With the integration and optimization design of industrial products, the proportion of a high-power permanent magnet synchronous motor in a permanent magnet synchronous motor is larger and larger. However, the service life of the bearings in the traditional motor and the high-power permanent magnet synchronous motor is influenced by the heat generated by the motor; compared with the traditional motor, the high-power permanent magnet synchronous motor has the advantages that the internal structure distribution is compact, after a rotor in the high-power permanent magnet synchronous motor generates heat, the bearing is obviously affected, and the condition that the temperature of the bearing is overhigh often occurs. Although the high-power permanent magnet synchronous motor often uses the water cooling base to cool the inside of the high-power permanent magnet synchronous motor, the inside of the high-power permanent magnet synchronous motor has no rotor wind wing, and a good circulation wind path cannot be formed inside the motor, so that the heat exchange efficiency inside the high-power permanent magnet synchronous motor is low. Therefore, the bearing inside the high-power permanent magnet synchronous motor can be in a high-heat state for a long time, the service life of the bearing is influenced, and the service life of the motor is further influenced. Therefore, how to reduce the temperature of the inner bearing of the high-power permanent magnet synchronous motor is a problem to be solved by those in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a high power water-cooling PMSM with heat dissipation function who reduces bearing temperature fast.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a high-power water-cooling permanent magnet synchronous motor with a heat dissipation function comprises a shaft, a bearing, a heat dissipation device and a rotor; the rotor is sleeved on the shaft, and the shafts at two ends of the rotor are respectively sleeved with a bearing; a heat dissipation device is arranged on the shaft between each bearing and the rotor; each heat dissipation device comprises a fixing plate and a fan blade; the fixing plate is a circular plate, and shaft holes penetrating through two end faces of the fixing plate are formed in the center of the fixing plate; the fixed plate is fixedly connected with the shaft through the shaft hole or is integrally arranged on the shaft; the two end faces of the fixing plate are uniformly and fixedly connected with a plurality of fan blades along the circumference of the fixing plate.

In the high-power water-cooling permanent magnet synchronous motor with the heat dissipation function, the plurality of fan blades positioned at the same end of the fixing plate form a group, and the number of the fan blades in each group is the same; the two groups of fan blades are arranged in an equidistant and staggered manner.

In the high-power water-cooling permanent magnet synchronous motor with the heat dissipation function, two ends of the rotor are fixedly connected with or integrally provided with the plurality of balance columns respectively; the plurality of balance columns are uniformly distributed along the circumference of the rotor.

In the high-power water-cooling permanent magnet synchronous motor with the heat dissipation function, the plurality of balance columns positioned at the same end of the rotor form a group, and the number of each group of balance columns is the same; the two groups of balancing columns are arranged in an equidistant and staggered mode.

In the high-power water-cooling permanent magnet synchronous motor with the heat dissipation function, the fan blades are curved plates, and the section perpendicular to the axial direction is of a hockey stick shape.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses a set up heat abstractor between rotor and bearing, dispel the heat to rotor and bearing simultaneously. When heat is dissipated, the fan blades which are uniformly distributed along the axial circumference are arranged at the two ends of the fixed plate in the heat dissipation device, so that the balance of the fixed plate when the fixed plate rotates along with the shaft is ensured; meanwhile, in the process that the double-sided fan blades rotate along with the shaft, on one hand, bidirectional airflow is generated to accelerate the flow of internal heat of the motor, and the water-cooling heat exchange efficiency of the motor is effectively improved; on the other hand, the double-sided fan blades respectively correspond to the rotor and the bearing, and the air flow generated by the double-sided fan blades directly sweeps the surfaces of the rotor and the bearing, so that the heat on the surfaces of the rotor and the bearing is taken away, and the heat dissipation speed of the rotor and the bearing is accelerated. The utility model discloses effectively reduced the temperature of rotor and bearing, avoided rotor and bearing to damage because of the high temperature, had characteristics such as the radiating efficiency is high, simple structure, easy and simple to handle.

The utility model discloses still set up quantity the same and equidistance staggered arrangement flabellum at the both ends of fixed plate, further guaranteed the equilibrium when the fixed plate follows the axle and rotates. The utility model discloses still set up quantity the same and the crisscross equilibrium post of equidistance at the both ends of rotor, guaranteed the balance when the rotor is rotatory, improved the stability when the rotor is rotatory. The utility model discloses still set up perpendicular axial tangent plane and regard as the flabellum for hockey stick type curved plate, make things convenient for the inside gaseous flow of motor. The utility model has the characteristics of balanced line height, simple structure, gaseous type of flowing are high.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

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

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

FIG. 3 is a schematic structural view of the heat dissipating ring of the present invention;

fig. 4 is a front view of the heat dissipating ring of the present invention.

The reference numbers of the files in the figure are as follows: 1-shaft, 2-bearing, 3-heat dissipation device, 3-1-fixing plate, 3-2-fan blade, 4-rotor and 4-1-balancing column.

Detailed Description

Referring to fig. 1, 2, 3 and 4, the high power water-cooled permanent magnet synchronous motor with a heat dissipation function includes a shaft 1, a bearing 2, a heat dissipation device 3 and a rotor 4. The rotor 4 is sleeved on the shaft 1, and a plurality of balance columns 4-1 are fixedly connected to two ends of the rotor 4 respectively or integrally arranged. The balance columns 4-1 positioned at the same end of the rotor 4 are in a group, and the balance columns 4-1 in each group are uniformly distributed along the circumference of the rotor 4. The two groups of balance columns 4-1 are the same in number and are arranged in an equidistant and staggered mode along the axial direction of the shaft 1. The shaft 1 is sleeved with two bearings 2, wherein one bearing 2 is adjacent to one end of the rotor 4, and the other bearing 2 is adjacent to the other end of the rotor 4. And a heat dissipation device 3 is arranged between each bearing 2 and the rotor 4. Each heat dissipation device 3 comprises a fixing plate 3-1 and fan blades 3-2. The fixing plate 3-1 is a circular plate, and a shaft hole penetrating through two ends of the fixing plate 3-1 is formed in the center of the fixing plate. The fixed plate 3-1 is fixedly connected with the shaft 1 through a shaft hole or integrally connected with the shaft 1. The fan blades 3-2 are curved plates, the section perpendicular to the axial direction is of a hockey stick shape and is fixedly connected to two end faces of the fixed plate 3-1, so that air flow flows along the fan blades 3-2 in the curved plate shape. The fan blades 3-2 are provided with a plurality of fan blades 3-2, and the fan blades 3-2 are divided into two groups with the same number. The two groups of fan blades 3-2 are respectively fixedly connected with two ends of the fixing plate 3-1. The two groups of fan blades 3-2 are uniformly distributed along the axis of the shaft 1 in a circumferential manner. The two groups of fan blades 3-2 are arranged in an equidistant and staggered mode along the axis direction of the shaft 1. When the fixed plate 3-1 rotates, the two groups of fan blades 3-2 respectively blow airflow to the bearing 2 and the rotor 4. Therefore, when the rotor 4 drives the shaft 1 to rotate, the fixing plate 3-1 rotates coaxially with the shaft 1, and the stability of the rotor 4 during rotation is improved because the balancing columns 4-1 on the rotor 4 are arranged in an equidistant and staggered mode. Because the rotating fixing plate 3-1 is positioned between the rotor 4 and the bearing 2, and the surface of the fixing plate 3-1 opposite to the rotor 4 or the bearing 2 is fixedly connected with a group of fan blades 3-2 which are uniformly distributed along the circumference of the axis, the group of fan blades 3-2 opposite to the bearing 2 can rotate along with the fixing plate 3-1 and generate air flow, and the generated air flow can sweep the bearing 2 and take away heat on the bearing 2; and a set of fan blades 3-2 opposite to the rotor 4 can rotate together with the fixed plate 3-1 and generate air flow, and the generated air flow can sweep the rotor 4 and take away heat on the rotor 4. Because each fixed plate 3-1 is provided with two groups of fan blades 3-2, the four groups of fan blades 3-2 can form stronger air flow so as to quickly take away heat on the rotor 4 or the bearing 2, and the taken away heat can be quickly subjected to heat exchange and temperature reduction at the position of the water-cooling base. Because the two groups of fan blades 3-2 positioned on the fixed plate 3-1 are arranged in an equidistant and staggered manner, the stability of the fixed plate 3-1 during rotation is improved; the end part of the rotor 4 is provided with a balance post 4-1, which increases the stability of the rotor 4.

With reference to fig. 1, 2, 3 and 4, the heat dissipation steps of the high power water-cooled permanent magnet synchronous motor with heat dissipation function will be further described in conjunction with the use process of the high power water-cooled permanent magnet synchronous motor with heat dissipation function: first step, turn on high power water-cooling PMSM, rotor 4 drives axle 1 and rotates on bearing 2 this moment, and rotor 4 is rotatory to produce heat. Secondly, as the fixed plate 3-1 is fixedly connected with the shaft 1 through the shaft hole or integrally arranged on the shaft 1, the fixed plate 3-1 and the shaft 1 rotate simultaneously and drive the two groups of fan blades 3-2 positioned at the two ends of each fixed plate 3-1 to rotate to generate air flow. Because the two groups of fan blades 3-2 are respectively opposite to the bearing 2 and the rotor 4, the two groups of fan blades 3-2 generate air flow in a rotating way and can blow and take away heat on the bearing 2 and the rotor 4. Thirdly, because the four groups of fan blades 3-2 generate wind simultaneously, the heat on the bearing 2 and the rotor 4 is quickly brought to the water cooling base by the strong wind flow for heat exchange, so that the temperature of the bearing 2 is quickly reduced, and the bearing 2 is protected.

Claims

1. The utility model provides a high power water-cooling PMSM with heat dissipation function which characterized in that: comprises a shaft (1), a bearing (2), a heat sink (3) and a rotor (4); the rotor (4) is sleeved on the shaft (1), and the shafts (1) at the two ends of the rotor (4) are respectively sleeved with a bearing (2); a heat dissipation device (3) is arranged on the shaft (1) between each bearing (2) and the rotor (4); each heat dissipation device (3) comprises a fixing plate (3-1) and a fan blade (3-2); the fixing plate (3-1) is a circular plate, and the center of the fixing plate is provided with shaft holes penetrating through two end faces of the fixing plate (3-1); the fixed plate (3-1) is fixedly connected with the shaft (1) through a shaft hole or integrally arranged on the shaft (1); the two end faces of the fixing plate (3-1) are uniformly and fixedly connected with a plurality of fan blades (3-2) along the circumference of the fixing plate (3-1).

2. The high-power water-cooling permanent magnet synchronous motor with the heat dissipation function of claim 1, characterized in that: the fan blades (3-2) positioned at the same end of the fixing plate (3-1) form a group, and the number of the fan blades (3-2) in each group is the same; the two groups of fan blades (3-2) are arranged in an equidistant and staggered manner.

3. The high-power water-cooling permanent magnet synchronous motor with the heat dissipation function of claim 1, characterized in that: two ends of the rotor (4) are fixedly connected or integrally provided with a plurality of balance columns (4-1) respectively; the balancing columns (4-1) are uniformly distributed along the circumference of the rotor (4).

4. The high-power water-cooling permanent magnet synchronous motor with the heat dissipation function of claim 3, characterized in that: the balance columns (4-1) positioned at the same end of the rotor (4) form a group, and the number of the balance columns (4-1) in each group is the same; the two groups of balancing columns (4-1) are arranged in an equidistant and staggered mode.

5. The high-power water-cooling permanent magnet synchronous motor with the heat dissipation function according to any one of claims 1 to 4, characterized in that: the fan blades (3-2) are curved plates, and the section perpendicular to the axial direction is of a hockey stick shape.