CN222029773U - Permanent magnet motor heat radiation structure - Google Patents

Abstract

The utility model discloses a permanent magnet motor heat dissipation structure, which relates to the technical field of motors and comprises a casing assembly, wherein a heat sink is arranged inside the casing assembly, the outer surface of the heat sink is circumferential and a plurality of groups of heat fins are arranged horizontally at equal intervals, and the free end side surfaces of the plurality of groups of heat sinks are in contact with the inner annular surface of the casing assembly, the inner surface of the heat sink is connected with a stator, a rotor is arranged through the center of the stator, a wind wheel is sleeved on the outer side of one end of the rotor, the wind wheel is driven to rotate by the rotor, the heat generated by the stator during operation is conducted to the heat sink, the rotation of the wind wheel drives the air flow in the casing assembly to circulate, and then the external air flow passes through two groups of arc plates and a plurality of groups of air inlets into one end of the casing assembly, the air flow passes between the plurality of groups of heat fins on the heat sink, takes away the heat on the heat sink and discharges it, and the structure dissipates heat when the permanent magnet motor is working, so as to avoid demagnetization of the motor and affect the use of the permanent magnet motor.

Description

Permanent magnet motor heat radiation structure

Technical Field

The utility model relates to the technical field of motors, in particular to a permanent magnet motor heat dissipation structure.

Background

The permanent magnet synchronous motor uses the permanent magnet to provide excitation, so that the motor structure is simpler, the processing and assembly cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the operation reliability of the motor is improved; because exciting current is not needed, exciting loss is avoided, and the efficiency and the power density of the motor are improved;

The permanent magnet synchronous motor has poor heat dissipation effect, and if a large amount of heat energy is generated during operation and cannot be dissipated in time, the influence on the internal magnetism of the motor can be caused, the motor is demagnetized, and the service life is influenced.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a permanent magnet motor heat dissipation structure, which solves the problems in the background art.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a permanent magnet motor heat radiation structure, includes the casing subassembly, the inside of casing subassembly is provided with the radiating piece, the surface of radiating piece is circumference form and equidistant transversely is provided with multiunit radiating fin, and multiunit radiating fin's free end side and the interior ring face of casing subassembly contact, the internal surface of radiating piece is connected with the stator, the center of stator runs through and is provided with the rotor, the outside cover of one end of rotor is equipped with the wind wheel, multiunit air intake has been seted up to the surface of casing subassembly and the one end of keeping away from the wind wheel.

As a further technical scheme of the utility model, two groups of arc plates are arranged on the outer surface of the shell component and positioned outside the plurality of groups of air inlets, and the surface of each group of arc plates is provided with an air hole group.

As a further technical scheme of the utility model, the heat dissipation piece is made of aluminum alloy, and the chambers at the two ends of the shell component form a communication structure through the intervals of a plurality of groups of heat dissipation fins on the heat dissipation piece.

As a further technical scheme of the utility model, the shell assembly comprises a shell, a side cover is arranged on one side surface of the shell and close to the air inlet, and a plurality of groups of bolts are connected with edges of the shell and the side cover together.

As a further technical scheme of the utility model, one end of the inner surface of the shell, which is close to the side cover, is connected with an inner ring, the inner surface of the other end of the shell is provided with a stepped groove, and the inner part of the stepped groove is connected with a fixing ring through a plurality of groups of screws.

As a further technical scheme of the utility model, the side surfaces of the two ends of the heat dissipation piece are respectively attached to the side surfaces of the inner ring and the fixing ring.

Advantageous effects

The utility model provides a permanent magnet motor heat dissipation structure. Compared with the prior art, the method has the following beneficial effects:

A permanent magnet motor radiating structure drives a wind wheel to rotate through a rotor, heat generated by the stator during operation is conducted to a radiating piece, the wind wheel rotates to drive airflow in a shell assembly to circulate, then external airflow enters one end of the shell assembly through two groups of arc plates and multiple groups of air inlets, the airflow passes through between multiple groups of radiating fins on the radiating piece to take away heat on the radiating piece to be discharged, and the structure radiates heat during operation of the permanent magnet motor, so that demagnetization of the motor is avoided, and the use of the permanent magnet motor is influenced.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation structure of a permanent magnet motor;

FIG. 2 is a top view of a permanent magnet motor heat dissipating structure;

FIG. 3 is a cross-sectional view of A-A of FIG. a;

Fig. 4 is a schematic structural diagram of a housing assembly in a heat dissipation structure of a permanent magnet motor.

In the figure: 1. a housing assembly; 11. a housing; 12. a side cover; 13. a bolt; 14. an inner ring; 15. a stepped groove; 16. a fixing ring; 2. a heat sink; 3. a stator; 4. a rotor; 5. a wind wheel; 6. an air inlet; 7. an arc-shaped plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution for a heat dissipation structure of a permanent magnet motor: the utility model provides a permanent magnet motor heat radiation structure, including casing subassembly 1, the inside of casing subassembly 1 is provided with radiating member 2, radiating member 2's outward appearance is circumference form and equidistant transversely is provided with multiunit radiating fin, and multiunit radiating fin's free end side contacts with casing subassembly 1's inner ring face, radiating member 2's internal surface is connected with stator 3, stator 3's center runs through and is provided with rotor 4, rotor 4's one end outside cover is equipped with wind wheel 5, casing subassembly 1's outward appearance and the one end of keeping away from wind wheel 5 have been seted up multiunit air intake 6, casing subassembly 1's outward appearance just is located multiunit air intake 6's externally mounted has two sets of arc 7, air pocket group has all been seted up on every set of arc 7's surface, radiating member 2's material is the aluminum alloy, casing subassembly 1's both ends cavity forms the communication structure through the multiunit radiating fin interval on the radiating member 2.

It should be noted that, stator 3 can be at the rotatory magnetic field that produces after the circular telegram, owing to installed the permanent magnet on rotor 4, its magnetic pole is fixed, this rotatory magnetic field can drive rotor 4 rotation according to the principle that like nature is attracted opposite to each other, and then rotor 4 drives wind wheel 5 rotation, stator 3 is on heat conduction to radiator 2 that the work was used to produce, wind wheel 5 rotation drives the interior air current circulation of casing subassembly 1, and then external air current gets into the one end of casing subassembly 1 through two sets of arc 7 and multiunit air intake 6, the air current is through between the multiunit fin on the radiator 2, take away the heat on the radiator 2 and discharge, thereby dispel the heat when permanent magnet motor work, avoid leading to the motor demagnetizing, influence permanent magnet motor's use.

Referring to fig. 4, the housing assembly 1 includes a housing 11, a side cover 12 is disposed at a side surface of the housing 11 and one end close to the air inlet 6, a plurality of sets of bolts 13 are connected to edges of the housing 11 and the side cover 12 together, an inner ring 14 is connected to an inner surface of the housing 11 and one end close to the side cover 12, a stepped groove 15 is formed in an inner surface of the other end of the housing 11, a fixing ring 16 is connected to an inner portion of the stepped groove 15 through a plurality of sets of screws, and two end side surfaces of the heat dissipation member 2 are respectively attached to side surfaces of the inner ring 14 and the fixing ring 16.

It should be noted that, by installing the heat sink 2 inside the casing 11 such that the side surface of the heat sink 2 abuts against the side surface of the inner ring 14, and then installing the fixing ring 16 inside the stepped groove 15 by screws, the side surface of the fixing ring 16 and the side surface of the heat sink 2 are attached to each other, thereby fixing the heat sink 2 and the stator 3.

The working principle of the utility model is as follows: when the novel heat dissipation device is used, the stator 3 can generate a rotating magnetic field after being electrified, as the permanent magnet is arranged on the rotor 4, the magnetic poles of the permanent magnet are fixed, the rotating magnetic field can drive the rotor 4 to rotate according to the principle that like poles attract and opposite poles repel, the rotor 4 drives the wind wheel 5 to rotate, the stator 3 conducts heat generated by working to the heat dissipation piece 2, the wind wheel 5 rotates to drive air flow in the shell assembly 1 to circulate, and then external air flow enters one end of the shell assembly 1 through the two groups of arc plates 7 and the multiple groups of air inlets 6, and the air flow is discharged through the multiple groups of heat dissipation fins on the heat dissipation piece 2, so that heat on the heat dissipation piece 2 is taken away.

Claims (6)

1. A permanent magnet motor heat dissipation structure, characterized in that it comprises a casing assembly (1), a heat sink (2) is arranged inside the casing assembly (1), the outer surface of the heat sink (2) is circular and has multiple groups of heat sink fins arranged horizontally at equal intervals, and the free end side surfaces of the multiple groups of heat sink fins are in contact with the inner annular surface of the casing assembly (1), the inner surface of the heat sink (2) is connected to a stator (3), a rotor (4) is arranged through the center of the stator (3), a wind wheel (5) is sleeved on one end of the rotor (4), and multiple groups of air inlets (6) are provided on the outer surface of the casing assembly (1) and at one end away from the wind wheel (5). 2. A permanent magnet motor heat dissipation structure according to claim 1, characterized in that two groups of arc plates (7) are installed on the outer surface of the housing assembly (1) and outside the multiple groups of air inlets (6), and each group of the arc plates (7) has a group of air holes on its surface. 3. A permanent magnet motor heat dissipation structure according to claim 1, characterized in that the heat sink (2) is made of aluminum alloy, and the chambers at both ends of the housing assembly (1) form a connecting structure through the spacing of multiple groups of heat dissipation fins on the heat sink (2). 4. A permanent magnet motor heat dissipation structure according to claim 1, characterized in that the housing assembly (1) comprises a housing (11), a side cover (12) is provided on a side of the housing (11) and at one end close to the air inlet (6), and the edges of the housing (11) and the side cover (12) are commonly connected by a plurality of groups of bolts (13). 5. A permanent magnet motor heat dissipation structure according to claim 4, characterized in that an inner ring (14) is connected to one end of the inner surface of the casing (11) close to the side cover (12), and a stepped groove (15) is opened on the inner surface of the other end of the casing (11), and a fixing ring (16) is connected to the inside of the stepped groove (15) by multiple sets of screws. 6. A permanent magnet motor heat dissipation structure according to claim 5, characterized in that the side surfaces at both ends of the heat dissipation element (2) are respectively in contact with the side surfaces of the inner ring (14) and the fixing ring (16).