CN219458767U

CN219458767U - High-characteristic high-strength shaded pole type fan

Info

Publication number: CN219458767U
Application number: CN202320110757.0U
Authority: CN
Inventors: 陈军任; 范正鑫; 于收海; 谭金龙; 唐博; 陈倩
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2023-01-14
Filing date: 2023-01-14
Publication date: 2023-08-01
Anticipated expiration: 2033-01-14

Abstract

The utility model provides a high-characteristic high strength's shaded pole formula fan, includes housing assembly, stator module and rotor subassembly, and its technical essential is: the outer wall of the shaft sleeve of the shell assembly is provided with a stator key; a stator body-building groove matched with the stator body-building plug is formed in the inner side of the stator core of the stator assembly; a positioning ring for preventing the stator core from moving axially is fixedly arranged on the shaft sleeve; the rotor assembly comprises a rotor shell, wherein the rotor shell consists of a rotor base with a rotor shaft and a rotor enclosure with a rotor core; a circlip and a limit nut for preventing the axial displacement of the rotor shaft are fixedly arranged at the end part of the rotor shaft; an inclined groove is formed in the edge of the rotor core; a steel ring is fixedly sleeved on the outer side of the rotor core; a rotor cover with fan blades is fixedly arranged on the outer side of the rotor shell. According to the utility model, the rotating speed of the fan is improved through the inclined grooves; the starting moment of the fan is improved through the steel ring; meanwhile, the utility model has the advantages of high structural strength and long service life.

Description

High-characteristic high-strength shaded pole type fan

Technical Field

The utility model belongs to the technical field of building decoration, and particularly relates to a high-characteristic high-strength shaded pole type fan.

Background

With the rapid development of electronic technology, the application of the shaded pole type fan product is more and more extensive, and the structural design of the shaded pole type fan is very important. At present, the shaded pole type fan has the following defects: (1) the fan has small starting moment, so that a starting dead point or slow starting is caused; (2) the characteristics of the fan are soft (the rotation speed of the fan is lower and the rotation amplitude of the fan is larger under the condition of the maximum static pressure), so that the air quantity and the air pressure of the fan and the heat dissipation capacity are insufficient; (3) under the environment of high vibrations, fan structural strength is not enough, leads to fan life to be short.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the shaded pole type fan with high characteristics and high strength, which ensures the performance of the fan, improves the starting moment, the rotating speed and the wind volume and pressure of the fan, increases the overall structural strength of the fan and prolongs the service life of the fan.

The utility model is realized by the following technical scheme: the utility model provides a high-characteristic high strength's shaded pole formula fan, includes interconnect complex casing subassembly, stator module and rotor subassembly, and its technical essential is: the shell assembly comprises a shell and a shaft sleeve fixedly arranged in the center of the shell, and a stator key is arranged on the outer wall of the shaft sleeve;

the stator assembly comprises a stator core sleeved on the shaft sleeve, and a stator body-building groove matched with the stator body-building plug is formed in the inner side of the stator core; the stator core is also fixedly provided with a winding, a short circuit ring and a magnetic conduction sheet; a positioning ring for preventing the stator core from moving axially is fixedly arranged on the shaft sleeve;

the rotor assembly comprises a rotor shell, wherein the rotor shell consists of a rotor base and a rotor surrounding baffle; a rotor shaft positioned in the shaft sleeve is fixedly arranged in the center of the rotor base, and an elastic check ring and a limit nut for preventing the rotor shaft from axially shifting are fixedly arranged at the end part of the rotor shaft; the inner side of the rotor surrounding rail is sequentially provided with a steel ring and a rotor iron core which are fixedly connected with the rotor surrounding rail from outside to inside; the rotor core is formed by overlapping a plurality of rotor punching sheets; a positioning notch is arranged at the edge of the rotor punching sheet; the edge of the rotor core is provided with an inclined groove formed by obliquely overlapping the positioning notches; a rotor cover with fan blades is fixedly arranged on the outer side of the rotor shell.

Further, the inclined groove has an inclination angle of 37 to 45 °.

Further, two positioning notches are formed in the rotor punching sheet, and the positions of the two positioning notches are symmetrically arranged.

The beneficial effects of the utility model are as follows:

(1) the steel sleeve is added on the rotor core, so that the rotating speed of the fan is increased, the starting torque of the fan is improved, and the phenomena of slow starting and starting dead points of the fan are avoided; (2) the rotor core is additionally provided with the inclined groove structure, so that the rotating speed of the fan under the maximum wind pressure can be increased, the maximum wind quantity and the wind pressure of the fan are increased, and the characteristics of the fan are improved; (3) the stator assembly can be prevented from radial movement and axial movement by the cooperation of the stator key of the shaft sleeve and the stator key slot on the stator assembly and the rotation preventing ring added on the shaft sleeve, so that the connection strength of the shell assembly and the stator assembly is improved; the elastic check ring and the nut are added on the rotor shaft, so that the rotor assembly can be axially fixed, and the connection strength of the shell assembly and the rotor assembly is increased; the matching structural strength of the rotor base and the rotor shaft can be enhanced through the die casting ADC 10; (4) the rotor cover structure with the fan blades is molded, so that the weight of the fan can be reduced, and the load of the fan can be reduced.

Drawings

FIG. 1 is a schematic side cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic side cross-sectional view of a housing assembly of the present utility model;

FIG. 3 is a schematic cross-sectional view of a stator assembly of the present utility model;

FIG. 4 is a schematic side cross-sectional view of a rotor assembly of the present utility model;

fig. 5 is a schematic diagram of the a-direction of the rotor sheet of the present utility model.

In the figure, the main part number is described: 1. a housing assembly; 2. a stator assembly; 3. a rotor assembly; 4. a bearing; 5. a positioning ring; 6. a circlip; 7. a limit nut; 8. a shaft sleeve; 9. a housing; 10. stator health; 11. a stator core; 12. a winding; 13. magnetic conductive sheets; 14. a willow nail; 15. a shorting ring; 16. a rotor cover; 17. a rotor shaft; 18. a rotor base; 19. a rotor enclosure; 20. a steel ring; 21. a rotor core; 22. an inclined groove; 23. a stator is a sound groove; 24. rotor punching; 25. the notch is positioned.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Detailed Description

The following describes the utility model in detail by way of specific examples in connection with fig. 1-5.

Examples

This high-performance high-strength shaded pole type fan, including interconnect complex casing subassembly 1, stator module 2 and rotor subassembly 3, wherein: the shell assembly is a main supporting and protecting structure of the fan and comprises a shell 8 and a shaft sleeve 9 which is die-cast at the center of the shell, a stator key is arranged on the outer wall of the shaft sleeve, and a bearing 4 is arranged in the shaft sleeve; the stator assembly comprises a stator core 11 sleeved on the shaft sleeve, the stator core is formed by laminating stator punching sheets, and the stator core is fixed through rivets, so that the strength of the stator core is improved, and the phenomenon of stator core cracking in the subsequent machining process is avoided; a stator body-building groove 23 which is in plug-in connection with the stator body is arranged on the inner side of the stator core; the stator core is also fixedly provided with a winding, a short circuit ring and a magnetic conduction sheet; the short circuit ring provides starting torque for the shaded pole type fan, and ensures the normal starting of the fan; the magnetic conducting sheet is arranged on the notch of the stator core, so that the magnetic conducting performance of the notch is improved, cogging torque is avoided, the fan rotates more stably, self-vibration of the fan is reduced, and the reliability of the fan is improved. The positioning ring for preventing the stator core from moving axially is fixedly arranged on the shaft sleeve and welded on the shaft sleeve in a circumferential laser welding mode, so that the strength of the fan is improved;

the rotor assembly comprises a rotor housing consisting of a rotor base 18 and a rotor rail 19; in order to ensure that the performance of the fan improves the rotating speed of the fan, the rotor surrounding gear is made of pure aluminum. The center of the rotor base is fixedly provided with a rotor shaft 17 positioned in the shaft sleeve, the end part of the rotor shaft is fixedly provided with a circlip 6 and a limit nut 7 for preventing the rotor shaft from axially shifting, the rotor assembly is fixedly clamped with the shaft sleeve through the circlip 6 on the rotor shaft, the axial limit is realized, the limit nut 7 is used for fixing the rotor assembly again, the glue is applied and the whole strength of the fan is improved; a steel ring 20 and a rotor iron core 21 which are fixedly connected with the rotor rail are sequentially arranged on the inner side of the rotor rail from outside to inside, and the steel ring and the rotor iron core are in small clearance fit; in order to improve the production efficiency and the fan characteristics, a rotor iron core and a rotor shaft which are sleeved with a steel ring are integrally formed with a rotor shell through die casting; after the steel ring is added, the aluminum flow outside the rotor iron core can be reduced, the aluminum flow inside the iron core is increased, the die-casting air holes of the end ring are reduced, and the broken bar inside the rotor conducting bar can be prevented, so that the rotating speed of the fan is increased, the starting torque of the fan is improved, and the phenomena of slow starting and dead center starting of the fan are avoided.

The rotor core is formed by overlapping a plurality of rotor punching sheets 24; the edge of the rotor punching sheet is provided with two positioning notches 25, and the positions of the two positioning notches are symmetrically arranged; the edge of the rotor core is provided with an inclined groove 22 formed by obliquely stacking positioning notches, the inclined angle of the inclined groove is between 37 and 45 degrees, and the added inclined groove structure can increase the 'maximum wind pressure and fan rotating speed', so that the maximum wind volume and wind pressure of the fan are increased, and the fan characteristic is improved; in order to enhance the matching structural strength of the rotor base and the rotor shaft and improve the overall strength of the fan, the rotor base is made of aluminum alloy. A rotor cover 16 with blades is fixedly arranged on the outer side of the rotor shell, and is made of plastic material and integrally formed with the rotor shell through plastic compression in order to lighten the weight of the fan and reduce the load.

Test data

The first shaded pole type fan is a shaded pole type fan with no steel ring structure and inclined groove structure; the second shaded pole type fan is a shaded pole type fan with a steel ring structure and a 37-degree inclined groove structure; the third shaded pole type fan is a shaded pole type fan with a steel ring structure and a 41-degree inclined groove structure; the third shaded pole type fan is a shaded pole type fan with a steel ring structure and a 45-degree inclined groove structure.

As can be seen from the data, after the steel ring structure is added, the starting time of the shaded pole type fan is increased from 18s to 6s; after the inclined groove structure is increased, the rotating speed of the shaded pole type fan is obviously improved under the maximum wind pressure.

Claims

1. The utility model provides a high-characteristic high strength's shaded pole formula fan, includes interconnect complex casing subassembly, stator module and rotor subassembly, its characterized in that: the shell assembly comprises a shell and a shaft sleeve fixedly arranged in the center of the shell, and a stator key is arranged on the outer wall of the shaft sleeve;

2. The high-performance high-strength shaded pole type fan according to claim 1, wherein: the inclined grooves have an inclination angle of 37 to 45 degrees.

3. The high-performance high-strength shaded pole type fan according to claim 1, wherein: the rotor punching sheet is provided with two positioning notches, and the positions of the two positioning notches are symmetrically arranged.