CN215682056U

CN215682056U - Small-size air feed motor

Info

Publication number: CN215682056U
Application number: CN202121946810.8U
Authority: CN
Inventors: 唐华生
Original assignee: Guangdong Roman Technology Co Ltd
Current assignee: Dongguan Kede Precision Manufacturing Co.,Ltd.
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-01-28
Anticipated expiration: 2031-08-18

Abstract

The utility model relates to the technical field of motors, in particular to a small-sized air supply motor, which comprises: the air duct is internally provided with an inner tube, and at least two air ducts are formed between the inner wall of the air duct and the inner tube; the impeller is arranged in the air duct and can rotate relative to the air duct; the heat dissipation frame is fixedly arranged at the air inlet end part of the air duct, and at least one air inlet is formed in the side of the heat dissipation frame; the rotor assembly comprises a rotating shaft which is rotatably arranged in the heat dissipation frame, and the rotating shaft is fixedly connected with the impeller; stator module, stator module fixed mounting are in the heat dissipation frame. Compared with the prior art, through external with the rotor subassembly to having reduced the volume of inner tube, having made the distance increase between inner tube outer wall and the dryer inner wall, thereby having made the wind channel grow, having increased the flow in wind channel, thereby improved air feed motor's work efficiency.

Description

Small-size air feed motor

Technical Field

The utility model relates to the technical field of motors, in particular to a small-sized air supply motor.

Background

Most of air supply equipment or blowing equipment in the market at present adopt a motor as a driving source, an impeller is fixedly connected to an output shaft of the motor, and the motor drives the impeller to rotate so as to generate airflow to supply air or blow air. Along with the demand change of the consumer to the product volume, the space volume that requires the motor to occupy is littleer and more to make the whole small of product, the structure is more pleasing to the eye and more conveniently carry.

See patent document CN201611140022.3, see fig. 1, which provides a motor comprising a frame 11, a rotor 13 and blades 14. The frame 11 is a cylindrical structure and is provided with an inner cylinder 12, a plurality of annular air ducts are formed between the inner wall of the frame 11 and the inner wall of the inner cylinder 12, holes are formed inside the inner cylinder 12 and used for installing the rotor 13, the blades 14 are installed at one end part inside the frame 11, and the rotor 13 is matched with the stator assembly to drive the blades 14 to rotate so as to realize air supply. Although the rotor 13 is embedded in the frame 11, the overall volume of the fan is reduced, the rotor 13 needs to be installed on the inner cylinder 12, which inevitably results in the overlarge volume of the inner cylinder 12, the distance between the inner cylinder 12 and the frame 11 is reduced, the flow rate of the air duct is reduced, and the air output is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small air supply motor with large air volume aiming at the defects in the prior art.

The purpose of the utility model is realized by the following technical scheme: the application provides a small-size air feed motor includes: the air duct is internally provided with an inner tube, and at least two air ducts are formed between the inner wall of the air duct and the inner tube; the impeller is arranged in the air duct and can rotate relative to the air duct; the heat dissipation frame is fixedly arranged at the air inlet end part of the air duct, and at least one air inlet is formed in the side of the heat dissipation frame; the rotor assembly comprises a rotating shaft which is rotatably arranged in the heat dissipation frame, and the rotating shaft is fixedly connected with the impeller; stator module, stator module fixed mounting are in the heat dissipation frame.

The heat dissipation frame comprises a heat dissipation frame body and a clamping ring clamped with the air duct, the heat dissipation frame body is fixedly connected with the clamping ring through at least two connecting pieces arranged at intervals, and an air inlet is formed between every two adjacent connecting pieces.

Wherein, the inner side wall of the clamping ring protrudes inwards to form a limit convex ring;

the clamping ring is sleeved at the end part of the air duct in an assembling state, and the top surface of the limiting convex ring is abutted to the end surface of the air duct.

The cross section of the clamping ring is the same as that of the air duct.

Wherein, the material of heat dissipation frame is aluminium or aluminum alloy.

Wherein, the periphery side of heat dissipation frame is seted up a plurality of intervals and is arranged and along the heat dissipation slot that heat dissipation frame axial set up, and each heat dissipation slot does not communicate with each other with the terminal surface of heat dissipation frame towards the dryer.

The rotor assembly further comprises a rotor sheath, a spring and two bearings, the middle of the heat dissipation frame is provided with an axial mounting hole along the heat dissipation frame, the rotor sheath is fixedly mounted in the mounting hole, the rotating shaft penetrates through the rotor sheath, the two bearings are sleeved on the rotating shaft and are respectively mounted at two ends inside the rotor sheath, and the spring is mounted between the two bearings.

The rotor assembly further comprises a magnet sleeved at the tail end of the rotating shaft, and the magnet is rotatably arranged inside the stator assembly.

Wherein, the peripheral side of the rotor sheath is fixedly connected with the hole wall of the mounting hole in a sealing way.

Wherein, the bottom of heat dissipation frame is equipped with the joint groove, and stator module joint is in the joint inslot.

The utility model has the beneficial effects that: compared with the prior art, the small-size air supply motor of this application, through external with the rotor subassembly to reduced the volume of inner tube, made the increase of distance between inner tube outer wall and the dryer inner wall, thereby made the wind channel grow, increased the flow in wind channel, and then improved air supply motor's work efficiency.

Drawings

The utility model is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the utility model, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a wind supply motor in the prior art.

Fig. 2 is a schematic structural diagram of a small-sized air supply motor in the embodiment.

Fig. 3 is an exploded view of a small and medium-sized air supply motor in this embodiment.

Fig. 4 is a sectional view of a small-sized air supply motor in the embodiment.

Fig. 5 is a schematic structural diagram of an air duct in the present embodiment.

Fig. 6 is a schematic structural diagram of the heat dissipation frame in this embodiment.

Reference numerals: the heat dissipation device comprises a frame 11, an inner cylinder 12, a rotor 13, blades 14, an air duct 2, an air duct 21, an inner cylinder 22, diffusion blades 23, a heat dissipation frame 3, an air inlet 30, a heat dissipation frame body 31, a clamping ring 32, a connecting piece 33, a limiting convex ring 34, a heat dissipation groove 35, a mounting hole 36, an impeller 4, a rotor assembly 5, a rotating shaft 51, a rotor sheath 52, a bearing 53, a spring 54, a magnet 55 and a stator assembly 6.

Detailed Description

The utility model is further described with reference to the following examples.

Referring to fig. 2 to 4, the small air supply motor of the present invention includes an air duct 2, an impeller 4, a heat dissipation frame 3, a rotor assembly 5, and a stator assembly 6.

Referring to fig. 5, an inner cylinder 22 is disposed in the air duct 2, and a plurality of air ducts 21 are formed between the inner wall of the air duct 2 and the inner cylinder 22. The inner cylinder 22 is preferably a hollow tubular structure, and may be a blind cavity structure, so that the weight of the whole motor can be reduced. In this embodiment, wind channel 21 is the heliciform structure, and is concrete, is equipped with a plurality of diffusion blade 23 of arranging along the circumference interval of inner tube 22 between dryer 2 and the inner tube 22, and diffusion blade 23, dryer 2 and inner tube 22 are integrated into one piece structure, form a wind channel 21 between two adjacent diffusion blade 23, and diffusion blade 23 can design into heliciform, wavy or straight strip according to actual demand, specifically can select according to actual demand.

As an improvement, referring to fig. 6, the heat dissipation frame 3 is fixedly installed at the air inlet end of the air duct 2, and a plurality of air inlets 30 are formed at the side of the heat dissipation frame 3. Specifically, the heat dissipation frame 3 includes a heat dissipation frame body 31 and a clamping ring 32 clamped with the air duct 2, the heat dissipation frame body 31 and the clamping ring 32 are fixedly connected through a plurality of connecting pieces 33 arranged at intervals, and an air inlet 30 is formed between two adjacent connecting pieces 33. Because dryer 2 is the axial air supply, the air feed motor of this embodiment adopts the air inlet mode of side income wind, can design into the size that the external diameter of heat dissipation frame 3 and dryer 2 are equal basically, need not to reduce the volume of heat dissipation frame 3 and reserve inlet air channel, guarantees that air intake 30 can the large tracts of land air inlet, provides the guarantee for large-traffic wind channel 21.

In this embodiment, in order to ensure the concentricity of the rotating shaft 51, the cross-sectional shape of the snap ring 32 is the same as that of the air duct 2, and in this embodiment, the snap ring is a circular structure, but of course, other structures such as a polygonal structure may also be used, and the cross-sectional shape may be specifically selected according to actual requirements. In addition, the inside wall of the clamping ring 32 protrudes inwards to form a limiting convex ring 34, the clamping ring 32 is sleeved outside the end part of the air duct 2 in an assembling state, and the top surface of the limiting convex ring 34 is abutted to the end surface of the air duct 2. Adopt the joint mode that cup joints, can guarantee the concentricity between heat dissipation frame 3 and dryer 2 effectively, improve the job stabilization nature of air feed motor.

In this embodiment, the heat dissipation frame 3 is made of aluminum or aluminum alloy, and this material has the characteristics of good heat dissipation performance and light weight, and can improve the heat dissipation rate of the rotor assembly 5 and reduce the overall weight of the product.

In this embodiment, the end surface of the heat dissipation frame body 31 close to the air duct 2 is a large plane, the peripheral side surface of the heat dissipation frame body 31 is provided with a plurality of heat dissipation grooves 35 which are arranged at intervals and axially arranged along the heat dissipation frame 3, and each heat dissipation groove 35 is not communicated with the end surface of the heat dissipation frame body 31 facing the air duct 2, so that the stability of side air entering is ensured, and air is prevented from entering from a plurality of directions, thereby generating turbulence.

In the present embodiment, as shown in fig. 3 and 4, the impeller 4 is installed inside the air duct 2 and is rotatable with respect to the air duct 2. And the rotor assembly 5 includes a rotating shaft 51, a rotor sheath 52, a spring 54, and two bearings 53. The middle part of the heat dissipation frame 3 is provided with an installation hole 36 along the axial direction thereof, the rotor sheath 52 is fixedly installed in the installation hole 36, the two bearings 53 are sleeved on the rotating shaft 51 and respectively installed at the two ends inside the rotor sheath 52, the spring 54 is installed between the two bearings 53, and the rotating shaft 51 is fixedly connected with the impeller 4. The bottom of heat dissipation frame 3 is equipped with the joint groove, and stator module 6 joint is in the joint inslot. The rotor assembly 5 further comprises a magnet 55 disposed at the end of the rotating shaft 51, and the magnet 55 is rotatably mounted inside the stator assembly 6.

In this embodiment, the peripheral side surface of the rotor sheath 52 is fixedly connected to the hole wall of the mounting hole 36 in a sealing manner, so that the rotation stability and reliability of the rotating shaft 51 can be effectively ensured.

Compared with the prior art, the small-size air supply motor of this embodiment is through external 5 with rotor assemblies to reduced inner tube 22's volume, made the increase of distance between inner tube 22 outer wall and the 2 inner walls of dryer, thereby made wind channel 21 grow, increased wind channel 21's flow, and then improved air supply motor's work efficiency, solved the less problem of wind channel 21 flow in the past.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A small-sized air supply motor is characterized by comprising:

the air duct is internally provided with an inner tube, and at least two air ducts are formed between the inner wall of the air duct and the inner tube;

the impeller is arranged in the air duct and can rotate relative to the air duct;

the heat dissipation frame is fixedly arranged at the air inlet end part of the air duct, and at least one air inlet is formed in the side of the heat dissipation frame;

the rotor assembly comprises a rotating shaft which is rotatably arranged in the heat dissipation frame, and the rotating shaft is fixedly connected with the impeller;

and the stator assembly is fixedly installed in the heat dissipation frame.

2. The small-sized air supply motor according to claim 1, wherein the heat dissipation frame comprises a heat dissipation frame body and a clamping ring clamped with the air duct, the heat dissipation frame body is fixedly connected with the clamping ring through at least two connecting pieces arranged at intervals, and the air inlet is formed between every two adjacent connecting pieces.

3. The small-sized wind supply motor according to claim 2, wherein the inner side wall of the clamping ring protrudes inwards to form a limit convex ring;

in an assembly state, the clamping ring is sleeved outside the end part of the air duct, and the top surface of the limiting convex ring is abutted to the end surface of the air duct.

4. The small air supply motor according to claim 2, wherein the snap ring has the same cross-sectional shape as the air duct.

5. The small-sized air supply motor according to claim 1, wherein the heat dissipation frame is made of aluminum or aluminum alloy.

6. The small-sized air supply motor according to claim 1, wherein a plurality of heat dissipation grooves are formed in the peripheral side surface of the heat dissipation frame, the heat dissipation grooves are arranged at intervals and are axially arranged along the heat dissipation frame, and each heat dissipation groove is not communicated with the end surface of the heat dissipation frame facing the air duct.

7. The small-sized air supply motor according to claim 1, wherein the rotor assembly further comprises a rotor sheath, a spring and two bearings, the middle portion of the heat dissipation frame is provided with an installation hole along the axial direction of the heat dissipation frame, the rotor sheath is fixedly installed in the installation hole, the rotating shaft penetrates through the rotor sheath, the two bearings are sleeved on the rotating shaft and are respectively installed at two ends inside the rotor sheath, and the spring is installed between the two bearings.

8. The miniature air supply motor of claim 7, wherein said rotor assembly further comprises a magnet disposed about an end of said shaft, said magnet being rotatably mounted within said stator assembly.

9. The small-sized wind-powered generator according to claim 7, wherein the outer peripheral side surface of the rotor sheath is fixedly connected with the wall of the mounting hole in a sealing manner.

10. The small-sized air supply motor according to claim 1, wherein a clamping groove is formed in the bottom end of the heat dissipation frame, and the stator assembly is clamped in the clamping groove.