Synchronous motor with heat dissipation structure

Abstract

The utility model discloses a synchronous motor with a heat dissipation structure, which comprises a motor body, the motor body comprises a shell and a motor driver arranged in the shell, and the motor driver comprises a power module; wherein the power module is connected to the inner wall of the shell, and a plurality of first fins are correspondingly arranged on the outer wall of the shell and used for dissipating heat of the power module. According to the technical scheme, the power module of the motor driver is connected to the inner wall of the shell, the multiple first fins are arranged on the corresponding outer wall of the shell, and when the ventilator works, heat generated by the power module can be transmitted to the first fins and can be taken away by axial flow air.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a synchronous motor with a heat dissipation structure. Background Art

[0002] Traditional fans are mostly driven by three-phase or single-phase asynchronous motors. Although asynchronous motors are low in cost, simple in structure, and easy to maintain, they have low efficiency and power factor, and large losses. At the same time, the flow regulation of fans and water pumps driven by such motors is usually completed by adjusting dampers and valves, so there is a serious waste of electricity. People use frequency converters to adjust the speed of asynchronous motors in fans and water pumps to adjust their flow, achieving considerable energy-saving effects, but the cost of frequency converters is high, and the low efficiency of asynchronous motors themselves still exists.

[0003] The AC permanent magnet synchronous motor is a motor that can be started directly in a 50Hz three-phase AC environment. It is a high-efficiency and energy-saving motor made by replacing traditional electric excitation with rare earth permanent magnet materials. It not only has the advantages of simple structure, reliable operation, and low heat generation of general permanent magnet motors, but also has the remarkable characteristics of small size, light weight, low loss, and high efficiency. It can achieve high performance that is difficult to achieve with traditional electric excitation motors.

[0004] However, when the fan is working, the power module of its motor driver will generate a lot of heat. If this heat is not discharged in time, it will easily burn out the electronic components and cause component aging, which will affect the performance of the motor over a long period of time. Utility Model Content

[0005] The main purpose of the utility model is to provide a synchronous motor with a heat dissipation structure, aiming to solve the technical problem that the power module of the existing synchronous motor driver generates a large amount of heat and affects the motor performance over a long period of time.

[0006] To achieve the above object, the utility model provides a synchronous motor with a heat dissipation structure, which includes:

[0007] A motor body, the motor body comprising a housing and a motor driver disposed in the housing, the motor driver comprising a power module;

[0008] The power module is connected to the inner wall of the shell, and a plurality of first fins are correspondingly arranged on the outer wall of the shell to dissipate heat for the power module.

[0009] Optionally, each of the first fins extends axially.

[0010] Optionally, the outer wall of the shell is further provided with a plurality of second fins for dissipating heat from the stator and rotor inside the shell.

[0011] Optionally, each of the second fins extends axially.

[0012] Optionally, a heat conductive material is provided at a connection between the power module and an inner wall of the housing.

[0013] In the technical solution of the utility model, the power module of the motor driver is connected to the inner wall of the shell, and a plurality of first fins are provided on the outer wall of the corresponding shell. When the fan is working, the heat generated by the power module will be transferred to the first fins and will be carried away by the axial flow air. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of a synchronous motor with a heat dissipation structure provided by the utility model;

[0016] Figure 2 for Figure 1 A three-dimensional structure diagram from another perspective;

[0017] Figure 3 for Figure 1 A three-dimensional diagram of the structure of the middle part;

[0018] Figure 4 for Figure 3 Top view of the .

[0019] In the figure: a synchronous motor with a heat dissipation structure - 100, a motor body - 1, a housing - 11, a first fin - 112, a second fin - 113, a motor driver - 12, a power module - 121, and a circuit board - 122.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the utility model creation of the present application, any of the currently described embodiments or preferred methods.

[0023] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" are based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate that the device referred to must have a specific direction or operate in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] When the fan is working, the power module of its motor driver will generate a lot of heat. If this heat is not discharged in time, it will easily burn out the electronic components and cause component aging, which will affect the performance of the motor over a long period of time.

[0026] In view of this, the utility model proposes a synchronous motor with a heat dissipation structure. Figure 1-4 For an embodiment of a synchronous motor with a heat dissipation structure provided by the utility model, please refer to Figure 1-4 The synchronous motor 100 with a heat dissipation structure includes a motor body 1, the motor body 1 includes a housing 11 and a motor driver 12 disposed in the housing 11, the motor driver 12 includes a circuit board 122 and a power module 121 mounted on the circuit board 122. It should be noted that the power module 121 includes components such as power semiconductors.

[0027] The power module 121 is connected to the inner wall of the housing 11 , and a plurality of first fins 112 are provided on the outer wall of the housing 11 at positions corresponding to the power module 121 for dissipating heat for the power module 121 .

[0028] In the technical solution of the present utility model, by connecting the power module 121 of the motor driver 12 to the inner wall of the shell 11, and providing a plurality of first fins 112 on the outer wall of the corresponding shell 11, when the fan is working, the heat generated by the power module 121 will be transferred to the first fins 112 and will be carried away by the axial flow wind.

[0029] When the synchronous motor is used in an axial flow fan, in order to improve the heat dissipation efficiency of the power module 121, please refer to Figure 2 and Figure 4 In one embodiment of the present invention, each of the first fins 112 extends in the axial direction, so that the flowing air can fully contact the surface of each of the first fins 112, and the heat can be dissipated faster. It should be noted that the axial direction here refers to the direction extending along the motor shaft.

[0030] To dissipate the heat generated by other components inside the motor, refer to Figure 1 and Figure 2 In one embodiment of the utility model, the outer wall of the housing 11 is further provided with a plurality of first fins 113 for discharging heat generated by friction between the stator and the rotor.

[0031] Furthermore, in order to improve the heat dissipation efficiency of the power module 121, in one embodiment of the present invention, a heat conductive material is provided at the connection between the power module 121 and the inner wall of the housing 11 to improve the heat conduction rate.

[0032] Similarly, when a synchronous motor is used in an axial flow fan, to improve the heat dissipation efficiency of other components inside the motor, please refer to Figure 1 and Figure 2 In one embodiment of the present invention, each of the first fins 113 extends axially, so that the flowing air can fully contact the surface of each of the first fins 113, and the heat can be dissipated faster.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A synchronous motor with a heat dissipation structure, characterized in that: include: A motor body (1), the motor body (1) comprising a housing (11) and a motor driver (12) disposed in the housing (11), the motor driver (12) comprising a power module (121); The power module (121) is connected to the inner wall of the outer shell (11), and a plurality of first fins (112) are correspondingly provided on the outer wall of the outer shell (11) for dissipating heat from the power module (121).

2. The synchronous motor with a heat dissipation structure according to claim 1, characterized in that: Each of the first fins (112) extends axially.

3. The synchronous motor with a heat dissipation structure according to claim 1, characterized in that: The outer wall of the housing (11) is also provided with a plurality of second fins (113) for dissipating heat from the stator and rotor inside the housing.

4. The synchronous motor with a heat dissipation structure according to claim 3, characterized in that: Each of the second fins (113) extends in the axial direction.

5. The synchronous motor with a heat dissipation structure according to claim 1, characterized in that: A heat-conducting material is provided at the connection between the power module (121) and the inner wall of the housing (11).

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