CN219145954U

CN219145954U - Novel drive plate heat radiation structure for brushless motor

Info

Publication number: CN219145954U
Application number: CN202222676864.8U
Authority: CN
Inventors: 王运帅; 徐桂冰
Original assignee: Suzhou Jinzhongwei Technology Co ltd
Current assignee: Suzhou Jinzhongwei Technology Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-06-06
Anticipated expiration: 2032-10-11

Abstract

The utility model relates to a novel driving plate heat radiation structure for a brushless motor, which comprises a shell with an opening at the upper end, an upper cover for closing the shell and a mounting cavity for forming the interior of the shell, wherein a driving plate is arranged in the mounting cavity, an air outlet is formed in the central position of the upper cover, the lower surface of the upper cover is connected with a heat radiation fan for blowing air in the mounting cavity into the air outlet, and the central axis of the air outlet is coincident with the central axis of the heat radiation fan; an air inlet for air intake is formed in at least one side wall of the shell, a shutter is arranged at the air inlet, the shutter is connected with the side wall of the shell and covers the air inlet, and a diversion heat dissipation structure is connected to the bottom of the shell. The beneficial effects of the utility model are as follows: the upper cover is provided with a cooling fan which can discharge the heat of the driving plate; adopt the shutter to assist the inlet air, make things convenient for low temperature gas to get into the installation cavity of casing on the one hand, dispel the heat to the drive plate, on the other hand can be isolated the dust in the air.

Description

Novel drive plate heat radiation structure for brushless motor

Technical Field

The utility model relates to the technical field of brushless motors, in particular to a novel driving plate heat dissipation structure for a brushless motor.

Background

The brushless DC motor is composed of a motor main body and a driver, is a typical electromechanical integrated product, and can not additionally add a starting winding on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation because the brushless DC motor runs in a self-control mode, and can not generate oscillation and step-out when the load is suddenly changed. Brushless motors are widely used in small and medium-sized electric devices, and because of their compact layout, the drives of brushless motors (particularly high-current brushless motors) tend to overheat easily, and there is a need to provide a novel heat dissipation structure to improve the problem.

Disclosure of Invention

In order to overcome at least part of the defects in the prior art, the embodiment of the utility model provides a novel driving plate heat dissipation structure for a brushless motor, which has the advantages of simple structure and convenience in use and can improve the heat dissipation effect on the driving plate of the brushless motor.

The utility model relates to a novel driving plate heat radiation structure for a brushless motor, which comprises a shell with an opening at the upper end, an upper cover for closing the shell and a mounting cavity for forming the interior of the shell, wherein a driving plate is arranged in the mounting cavity, an air outlet is formed in the central position of the upper cover, the lower surface of the upper cover is connected with a heat radiation fan for blowing air in the mounting cavity into the air outlet, and the central axis of the air outlet is coincident with the central axis of the heat radiation fan;

an air inlet for air intake is formed in at least one side wall of the shell, a shutter is arranged at the air inlet, the shutter is connected with the side wall of the shell and covers the air inlet, and a diversion heat dissipation structure is connected to the bottom of the shell.

Further, the cooling fan comprises a fan body and a fan mounting frame, 3 mounting holes and 1 fool-proof hole are formed in four corners of the fan mounting frame, and the fan mounting frame is connected with the upper cover through fixing bolts penetrating through the mounting holes.

Further, fixing holes are formed in four corners of the upper cover, and the upper cover is connected with the shell through bolts penetrating through the fixing holes.

Further, the shutter comprises a shutter fixing frame and curtain leaves connected to the shutter fixing frame, the cross sections of the curtain leaves are right-angled triangles, one right-angled side of each right-angled triangle is connected with the shutter fixing frame, and an air inlet channel with a downward opening is formed between every two adjacent curtain leaves.

Further, the curtain leaf and the shutter fixing frame are of an integrated structure.

Further, the diversion heat dissipation structure comprises a plurality of protruding parts which are connected to the bottom of the shell and extend downwards, and heat exchange channels are formed between the adjacent protruding parts.

Further, the shell, the upper cover, the shutter and the diversion heat dissipation structure are all made of metal materials.

The utility model has the advantages that: the upper cover is provided with a cooling fan which can discharge the heat of the driving plate; an air inlet is newly formed in the surface of the shell, and a shutter is adopted to assist air intake, so that low-temperature air can conveniently enter an installation cavity of the shell to dissipate heat of the driving plate, and dust in air can be isolated; the lower surface of the shell is provided with a diversion heat dissipation structure, so that the contact area with air can be enlarged, and heat dissipation is easier; the shell and the upper cover are made of metal materials, so that the heat dissipation effect is further improved.

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a novel drive board heat dissipation structure for a brushless motor.

Fig. 2 is a schematic view of the internal structure of fig. 1.

Fig. 3 is a schematic structural view of the heat dissipation fan.

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.

In a preferred embodiment of the present utility model, a novel driving board heat dissipation structure for a brushless motor includes a housing 1 with an opening at an upper end, an upper cover 2 for closing the housing 1, and a mounting cavity 3 forming an interior of the housing, wherein a driving board 4 is disposed in the mounting cavity 3, an air outlet 22 is provided at a central position of the upper cover 2, a heat dissipation fan 21 for blowing air in the mounting cavity 3 into the air outlet 22 is connected to a lower surface of the upper cover 2, and a central axis of the air outlet coincides with a central axis of the heat dissipation fan 21;

an air inlet 11 for air intake is formed in at least one side wall of the shell 1, a louver 5 is arranged at the air inlet 11, the louver 5 is connected with the side wall of the shell 1, the louver 5 covers the air inlet 11, and a diversion heat dissipation structure 6 is connected to the bottom of the shell 1. The upper cover 2 is provided with a cooling fan 21 which can discharge the heat of the driving plate 4; an air inlet 11 is newly formed in the surface of the shell 1, and meanwhile, a shutter 5 is adopted to assist air intake, so that low-temperature gas can conveniently enter the installation cavity 3 of the shell to dissipate heat of the driving plate 4, and dust in air can be isolated; the lower surface of the shell 1 is provided with the diversion heat dissipation structure 6, so that the contact area with air can be enlarged, and heat dissipation is easier.

In the above embodiment, in order to facilitate the installation of the heat radiation fan 21, it is convenient to align the heat radiation fan 21 with the air outlet 22. The cooling fan 21 includes a fan body 211 and a

fan mounting frame

212, 3

mounting holes

2121 and 1 fool-proof holes 2122 are formed at four corners of the fan mounting frame 212, and the fan mounting frame 212 is connected with the upper cover 2 by fixing bolts penetrating the mounting holes 2121.

In the above embodiment, in order to fix the upper cover 2 and the housing 1 to each other conveniently, fixing holes 23 are formed at four corners of the upper cover 2, and the upper cover 2 is connected to the housing 1 by bolts passing through the fixing holes 23.

In the above embodiment, in order to reduce the probability of dust entering the inside of the installation cavity 3, the shutter 5 includes a shutter fixing frame 51 and the shutter blades 52 connected to the shutter fixing frame 51, the cross section of the shutter blades is a right triangle, one right triangle side is connected to the shutter fixing frame 51, and an air inlet channel 53 with a downward opening is formed between the adjacent shutter blades 52.

In the above embodiment, in order to facilitate assembling the shutter 5 and reduce the assembling difficulty, the shutter 52 and the shutter fixing frame 51 adopt an integral structure.

In the above embodiment, the heat-guiding and radiating structure 6 includes a plurality of protruding portions 61 connected to the bottom of the housing 1 and protruding downward, and heat exchange channels 62 are formed between adjacent protruding portions 61.

In the above embodiment, in order to further improve the heat dissipation effect, the housing 1, the upper cover 2, the louver 5, and the flow guiding heat dissipation structure 6 are all made of a metal material.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims

1. A novel drive plate heat radiation structure for brushless motor, its characterized in that: the air-conditioner comprises a shell with an opening at the upper end, an upper cover for closing the shell and a mounting cavity for forming the interior of the shell, wherein a driving plate is arranged in the mounting cavity, an air outlet is formed in the center position of the upper cover, a cooling fan for blowing air in the mounting cavity into the air outlet is connected to the lower surface of the upper cover, and the central axis of the air outlet coincides with the central axis of the cooling fan;

2. The novel drive board heat radiation structure for a brushless motor according to claim 1, wherein: the cooling fan comprises a fan body and a fan mounting frame, 3 mounting holes and 1 fool-proof hole are formed in four corners of the fan mounting frame, and the fan mounting frame is connected with the upper cover through fixing bolts penetrating through the mounting holes.

3. The novel drive board heat radiation structure for a brushless motor according to claim 1, wherein: fixing holes are formed in four corners of the upper cover, and the upper cover is connected with the shell through bolts penetrating through the fixing holes.

4. The novel drive board heat radiation structure for a brushless motor according to claim 1, wherein: the shutter comprises a shutter fixing frame and curtain leaves connected to the shutter fixing frame, the cross sections of the curtain leaves are right-angled triangles, one right-angled side of each right-angled triangle is connected with the shutter fixing frame, and an air inlet channel with a downward opening is formed between every two adjacent curtain leaves.

5. The novel drive plate heat radiation structure for a brushless motor as claimed in claim 4, wherein: the curtain leaf and the shutter fixing frame are of an integrated structure.

6. The novel drive board heat radiation structure for a brushless motor according to claim 1, wherein: the flow guiding and heat dissipating structure comprises a plurality of protruding parts which are connected to the bottom of the shell and extend downwards, and heat exchange channels are formed between the adjacent protruding parts.

7. The novel drive plate heat radiation structure for a brushless motor as claimed in claim 6, wherein: the shell, the upper cover, the shutter and the diversion heat dissipation structure are all made of metal materials.