CN216490046U

CN216490046U - Air duct device for motor

Info

Publication number: CN216490046U
Application number: CN202123190944.4U
Authority: CN
Inventors: 廖座朝
Original assignee: Guangdong Weimai Motor Co ltd
Current assignee: Guangdong Weimai Motor Co ltd
Priority date: 2021-12-18
Filing date: 2021-12-18
Publication date: 2022-05-10
Anticipated expiration: 2031-12-18

Abstract

The utility model relates to the technical field of electric motor, specifically disclose a wind channel device for motor, including motor body, the last rotor that is provided with the pivot and is connected with the pivot of motor body, last end cover and the fan of being provided with of motor body, be provided with on the fan with the wind-guiding circle that the fan integration is connected, be provided with on the end cover with the tangent arc surface of wind-guiding circle, the fan cover is located in the pivot. The utility model has the advantages that the arc surface tangent to the air guiding ring is arranged on the end cover, and the air guiding ring is integrally connected with the end surface of the fan, so that air backflow can be avoided, the utilization rate of air kinetic energy is improved, the heat dissipation effect is increased, and jitter is reduced; and the fan and the rotor are independently arranged, so that the production cost can be reduced.

Description

Air duct device for motor

Technical Field

The utility model relates to the technical field of motors, in particular to an air duct device for motor.

Background

The motor is a device for converting electric power into mechanical power, and is composed of a rotor and a stator. The existing motor generally comprises a cast aluminum fan and an air guide ring, the air guide ring and the cast aluminum fan are separately arranged, the air guide ring and a shell form a right angle, the end surface of the cast aluminum fan is parallel to the air guide ring, the end surface of the cast aluminum fan swings greatly, so that the qualified rate is ensured, the clearance between the cast aluminum fan and the air guide ring is large, and the right angle between the cast aluminum fan and the shell can cause that a part of air flows to return to an air inlet along the clearance between the end part of the fan and the air guide ring when the air flows to the inner wall of the shell, thereby causing waste and low utilization rate of air kinetic energy; in addition, the cast aluminum fan is cast on the rotor aluminum ring, so that the cost of the rotor is increased, the mold closing cost is increased, the cost of the mold is also increased, and the production cost is higher. In addition, the cast aluminum fan has a large outer diameter, needs to be adjusted and balanced if shaking is to be avoided, and is not easy to correct.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide an air duct device for a motor, which can avoid air backflow, improve the utilization rate of air kinetic energy, increase the heat dissipation effect, and reduce the jitter by arranging an arc surface tangent to an air guiding ring on an end cover, wherein the air guiding ring is integrally connected with the end surface of a fan; and the fan and the rotor are independently arranged, so that the production cost can be reduced.

In order to solve the technical problem, the technical scheme of the utility model is that:

an air duct device for a motor comprises a motor body, wherein a rotating shaft and a rotor connected with the rotating shaft are arranged on the motor body, an end cover and a fan are arranged on the motor body, an air guide ring integrally connected with the fan is arranged on the fan, an arc surface tangent to the air guide ring is arranged on the end cover, and the rotating shaft is sleeved with the fan.

Preferably, the motor body includes a casing, a motor stator is disposed in the casing, the rotor is disposed on the inner side of the motor stator, the end cover is mounted on the right side of the casing, and the rotating shaft sequentially penetrates through the rotor, the fan, the air guide ring and the end cover.

Preferably, the air guide ring is arranged on the right end face of the fan, and the air guide ring and the fan are integrally formed.

Preferably, the fan and the air guide ring are made of plastic materials.

Preferably, the outer side of the end cover is provided with a plurality of radiating fins, and the center of the end cover is provided with a rotating shaft through hole.

Preferably, the inner side of the end cover is provided with a plurality of screw columns, and the vertexes of the screw columns in a rectangular shape are sequentially distributed on the end cover.

Adopt above-mentioned technical scheme, the utility model provides a pair of an air duct device for motor has following beneficial effect: compared with the traditional cast aluminum motor, the air duct device cancels the original air guide ring by arranging the arc surface tangent to the air guide ring on the end cover, reduces the material cost and the labor cost, can avoid air backflow, improves the utilization rate of air kinetic energy, increases the heat dissipation effect, reduces the product cost, reduces the shake of the motor caused by dynamic unbalance and reduces the shake; and the fan and the rotor are independently arranged, so that the fan and the rotor are not integrally formed by die-casting, the die assembly cost and the die cost are reduced, and the production cost can be reduced.

Drawings

Fig. 1 is a cross-sectional view of a conventional cast aluminum motor;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is an exploded view of the present invention;

fig. 4 is a schematic structural view of the end cap of the present invention;

in the figure, 1-a motor body, 2-a rotating shaft, 3-a rotor, 4-an end cover, 5-a fan, 6-a wind guide ring, 7-an arc surface, 8-a machine shell, 9-a motor stator, 10-a radiating fin, 11-a rotating shaft through hole and 12-a screw column.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

As shown in fig. 1-4, the air duct device for a motor includes a motor body 1, a rotating shaft 2 and a rotor 3 connected to the rotating shaft 2 are disposed on the motor body 1, an end cover 4 and a fan 5 are disposed on the motor body 1, an air guiding ring 6 integrally connected to the fan 4 is disposed on the fan 4, an arc surface 7 tangent to the air guiding ring 6 is disposed on the end cover 4, and the fan 5 is sleeved on the rotating shaft 2. It can be understood that the fan 5 and the wind guiding ring 6 can be made of plastic material. The air duct device can improve the heat dissipation effect of the fan 5 on the motor, reduce vibration, reduce cost and improve manufacturability.

Specifically, the motor body 1 includes a casing 8, a motor stator 9 is disposed in the casing 8, the rotor 3 is disposed inside the motor stator 9, the end cover 4 is mounted on the right side of the casing 8, and the rotating shaft 2 sequentially penetrates through the rotor 3, the fan 5, the air guide ring 6 and the end cover 4; the air guiding ring 6 is arranged on the right end face of the fan 5, and the air guiding ring 6 and the fan 5 are integrally formed; a plurality of radiating fins 10 are arranged on the outer side of the end cover 4, and a rotating shaft through hole 11 is formed in the center of the end cover 4; the inner side of the end cover 4 is provided with a plurality of screw columns 12, and the rectangular vertexes of the screw columns 12 are sequentially distributed on the end cover 4 and are used for being fixedly installed on the machine shell 8. It can be understood that the inner wall of the arc surface 7 is tangent to the wind guiding ring 6, and the outer wall of the arc surface 7 is tangent to the inner wall of the casing 8.

It can be understood that the utility model relates to a rationally, the structure is unique, compares in traditional cast aluminium motor, and this ducting device has following advantage:

1. the original wind guide ring is eliminated, and the material cost and the labor cost are reduced;

2. an arc-shaped ring (namely an arc surface 7) is integrated on the end cover to meet the function of the original air guide ring, and the arc surface 7 is tangent to the inner wall of the shell 8, so that air backflow can be avoided;

3. the distance between the outer circle of the fan 5 and the inner circle of the air guide ring 6 is small, because the jumping of the outer circle can be well controlled relative to the jumping of the end face in production, and the smaller distance can also reduce the probability of air backflow to the greatest extent, improve the utilization rate of kinetic energy to air circulation and increase the heat dissipation effect;

4. the fan 5 can be made of plastic, thinner fan blades and more fan blades can be used as the plastic fan blades, and the plastic fan blades can provide larger air volume for the heat dissipation in the motor; the plastic fan blade is light in weight, and the shaking of the motor caused by dynamic unbalance is reduced while the product cost is reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides an air duct device for motor, includes motor body, the last rotor that is provided with the pivot and is connected with the pivot of motor body, its characterized in that: the motor comprises a motor body and is characterized in that an end cover and a fan are arranged on the motor body, an air guide ring integrally connected with the fan is arranged on the fan, an arc surface tangent to the air guide ring is arranged on the end cover, and the fan is sleeved on the rotating shaft.

2. The air duct device for the motor according to claim 1, wherein: the motor body comprises a casing, a motor stator is arranged in the casing, the rotor is arranged on the inner side of the motor stator, the end cover is arranged on the right side of the casing, and the rotating shaft sequentially penetrates through the rotor, the fan, the air guide ring and the end cover.

3. The air duct device for the motor according to claim 1, wherein: the air guide ring is arranged on the right end face of the fan, and the air guide ring and the fan are integrally formed.

4. The air duct device for the motor according to claim 1, wherein: the fan and the air guide ring are made of plastic materials.

5. The air duct device for the motor according to claim 1, wherein: the outer side of the end cover is provided with a plurality of radiating fins, and a rotating shaft through hole is formed in the center of the end cover.

6. The air duct device for the motor according to claim 1, wherein: the inner side of the end cover is provided with a plurality of screw columns, and the vertexes of the rectangular screw columns are sequentially distributed on the end cover.