CN213754250U - Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor - Google Patents
Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor Download PDFInfo
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- CN213754250U CN213754250U CN202023140993.2U CN202023140993U CN213754250U CN 213754250 U CN213754250 U CN 213754250U CN 202023140993 U CN202023140993 U CN 202023140993U CN 213754250 U CN213754250 U CN 213754250U
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Abstract
本实用新型提供一种永磁无刷力矩电动机半开放式强迫风冷散热结构，它包括机身和设于机身内部的转子、定子，所述机身的前端和后端分别设置有第一扇叶和第二扇叶，转子上设置有转轴，所述转轴的两端延伸出机身并与第一扇叶、第二扇叶轴接，所述机身的前端面和后端面开设有与机身内部连通的通风结构。该散热结构可以提高电机的有效散热能力，间接地提高电机的转矩密度和功率密度，提高电机的可靠性，而且驱动散热的第一扇叶和第二扇叶是采用电机本身的转轴驱动，无需额外连接驱动源。此外，第一扇叶和第二扇叶相向设置，可以实现对电机内部相向鼓风，防止电机局部热量的累积，并且该散热结构还适用于其它封闭式风冷或自然冷却的内转子电机使用。
The utility model provides a semi-open forced air cooling heat dissipation structure of a permanent magnet brushless torque motor, which comprises a body, a rotor and a stator arranged inside the body, and the front end and the rear end of the body are respectively provided with a first The fan blade and the second fan blade, the rotor is provided with a rotating shaft, the two ends of the rotating shaft extend out of the fuselage and are connected with the first fan blade and the second fan blade, and the front and rear surfaces of the fuselage are provided with A ventilation structure that communicates with the interior of the fuselage. The heat dissipation structure can improve the effective heat dissipation capacity of the motor, indirectly improve the torque density and power density of the motor, and improve the reliability of the motor, and the first fan blade and the second fan blade for driving heat dissipation are driven by the rotating shaft of the motor itself. No additional drive source is required. In addition, the first fan blade and the second fan blade are arranged opposite to each other, which can achieve opposite blowing inside the motor to prevent the accumulation of local heat in the motor, and the heat dissipation structure is also suitable for other enclosed air-cooled or naturally cooled inner rotor motors. .
Description
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of brushless motor and specifically relates to a permanent magnet brushless torque motor semi-open forced air cooling heat radiation structure is related to.
[ background of the invention ]
With the miniaturization, miniaturization and portability of household electrical appliances, the permanent magnet brushless torque motor in the household electric tool is gradually designed in the direction of compact structure and high density. Under the same working condition, the size of the motor is limited by the heat dissipation structure of the motor to a great extent, and the heat dissipation capacity of the motor is improved, so that the load pressure under the same working condition can be reduced. In household power tools, the power and torque of permanent magnet brushless torque motors are higher than other motor types, but their heat dissipation requires additional design and consideration. In addition, the working environment of the torque motor is usually closed, and the whole motor is also usually sealed, so that heat is difficult to dissipate when the motor works under a heavy load. The continuous accumulation of heat will seriously affect the operational reliability of the motor and the safety of the internal components.
For this reason, further improvements are necessary.
[ Utility model ] content
The utility model aims at overcoming above-mentioned problem, we provide a permanent magnetism brushless torque motor semi-open forced air cooling heat radiation structure, can provide better heat dissipation condition for torque motor, indirectly increase the power density and the torque density of motor, guarantee radiating reliability of motor and high efficiency in compact structure.
In order to achieve the purpose, the semi-open forced air cooling heat dissipation structure of the permanent magnet brushless torque motor comprises a machine body, and a rotor and a stator which are arranged inside the machine body, wherein a first fan blade and a second fan blade are respectively arranged at the front end and the rear end of the machine body, a rotating shaft is arranged on the rotor, the machine body is extended out of the two ends of the rotating shaft and is in shaft connection with the first fan blade and the second fan blade, and a ventilation structure communicated with the inside of the machine body is arranged on the front end face and the rear end face of the machine body.
In one or more embodiments, the body includes a casing, a front cover plate and a rear cover plate, the front cover plate and the rear cover plate are detachably mounted on the front end and the rear end of the casing through connecting members, and the ventilation structure is disposed on the front cover plate and the rear cover plate.
In one or more embodiments, the ventilation structure comprises a plurality of first ventilation holes which are axially and uniformly distributed, and the ventilation structure corresponds to a winding inside the machine body.
In one or more embodiments, the rotating shaft is provided with a limiting structure located at the first fan blade and the second fan blade for preventing the first fan blade and the second fan blade from moving axially.
In one or more embodiments, the limiting structure is a screw, and the first blade, the second blade and the rotating shaft are all provided with screw holes.
In one or more embodiments, the limiting structure is a shaft retaining ring, the rotating shaft is provided with grooves in front of and behind the first fan blade and in front of and behind the second fan blade, and the grooves are provided with the shaft retaining rings.
In one or more embodiments, the rotor is provided with a plurality of second ventilation holes extending in the axial direction, and the plurality of second ventilation holes are uniformly distributed in the circumferential direction.
In one or more embodiments, the air outlet direction of the first fan blade is opposite to the air outlet direction of the second fan blade.
Compared with the background art, the utility model has the following technical effects: the heat dissipation structure can improve the effective heat dissipation capacity of the motor, indirectly improve the torque density and the power density of the motor, and improve the reliability of the motor, and the first fan blade and the second fan blade which drive the heat dissipation are driven by the rotating shaft of the motor, so that additional connection of a driving source is not needed. In addition, first flabellum and second flabellum set up in opposite directions, can realize the inside air blast in opposite directions of motor, prevent the accumulation of the local heat of motor to this heat radiation structure still is applicable to other closed forced air cooling or natural cooling's inner rotor motors and uses.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a permanent magnet brushless torque motor with a forced cold air heat dissipation structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at another angle;
FIG. 3 is a schematic structural view of the first fan blade, the front cover plate, the rear cover plate, and the second fan blade according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a rotor according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
Referring to fig. 1-4, the present application provides a semi-open forced air cooling heat dissipation structure for a permanent magnet brushless torque motor, which comprises a body, and a rotor 1 and a stator disposed inside the body, wherein the front end and the rear end of the body are respectively provided with a first fan blade 2 and a second fan blade 3, the rotor 1 is provided with a rotating shaft 4, the rotating shaft 4 is disposed at the axis of the rotor and rotates synchronously with the rotor, two ends of the rotating shaft 4 extend out of the body and are coupled to the first fan blade 2 and the second fan blade 3, the front end surface and the rear end surface of the body are provided with a ventilation structure communicated with the inside of the body, the rotation of the rotating shaft 4 during operation of the motor drives the first fan blade 2 and the second fan blade 3 at two ends to rotate, so that the first fan blade 2 and the second fan blade 3 generate cold air entering the inside of the body to cool and dissipate heat inside the body, thereby improving the reliability and the heat dissipation efficiency of the motor, indirectly increasing the torque density and power density of the motor.
Preferably, the fuselage includes casing 5, front shroud 6 and back shroud 7, and front shroud 6 and back shroud 7 pass through connecting piece demountable installation in the front end and the rear end of casing 5, and is concrete, and the connecting piece is bolt or screw, and corresponding screw hole has all been seted up at front shroud 6, back shroud 7 and the front and back both ends of casing 5, ventilation structure sets up on front shroud 6 and back shroud 7, offers ventilation structure and changes machine-shaping on front shroud 6 and back shroud 7. Specifically, ventilation structure comprises the first ventilation hole 8 of a plurality of axial equipartitions, and first ventilation hole 8 is fan-shaped, ventilation structure corresponds the inside winding of fuselage to the better carries out cooling for inside winding.
Preferably, pivot 4 is located first flabellum 2 and second flabellum 3 department and is provided with the limit structure who prevents first flabellum 2, 3 axial displacement of second flabellum, and is concrete, limit structure is the screw, all opened the screw hole on first flabellum 2, second flabellum 3 and the pivot 4, fix first flabellum 2 and second flabellum 3 in pivot 4 through the screw. The limiting structure can also be a shaft retaining ring, grooves are formed in the front and back of the first fan blade 2 and the front and back of the second fan blade 3 of the rotating shaft 4, and the shaft retaining ring is arranged on the grooves and passes through the shaft retaining ring. The manufacturing enterprise can select corresponding limit structure to use according to actual production demand.
Preferably, a plurality of second ventilation holes 9 extending axially are formed in the rotor 1, the plurality of second ventilation holes 9 are uniformly distributed in the circumferential direction, and the second ventilation holes 9 are also called as fabrication holes, so that cooling is facilitated, and the overall weight of the motor can be reduced.
Preferably, the air outlet direction of the first fan blade 2 is opposite to the air outlet direction of the second fan blade 3, that is, bidirectional air blowing is realized, and accumulation of local heat of the motor is prevented.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment, but all equivalent modifications or changes made by those skilled in the art according to the present invention should be included in the protection scope of the claims.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023140993.2U CN213754250U (en) | 2020-12-23 | 2020-12-23 | Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023140993.2U CN213754250U (en) | 2020-12-23 | 2020-12-23 | Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor |
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| CN213754250U true CN213754250U (en) | 2021-07-20 |
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| CN202023140993.2U Active CN213754250U (en) | 2020-12-23 | 2020-12-23 | Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531972A (en) * | 2020-12-23 | 2021-03-19 | 广东力然电器实业有限公司 | Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor |
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2020
- 2020-12-23 CN CN202023140993.2U patent/CN213754250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112531972A (en) * | 2020-12-23 | 2021-03-19 | 广东力然电器实业有限公司 | Semi-open forced air cooling heat dissipation structure of permanent magnet brushless torque motor |
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Effective date of registration: 20250709 Address after: 528000 No.1, Peilong Road, Longyongkou Village, Ronggui Street, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong lianbai Technology Group Co.,Ltd. Country or region after: China Address before: 528425 Guangdong city of Zhongshan Province Dongfeng Town Village Ji Road No. 18 with spike into two Patentee before: Guangdong Liran Electric Appliance Industry Co.,Ltd. Country or region before: China Patentee before: Shenzhen tiemeizhong Technology Co.,Ltd. |