CN210273736U

CN210273736U - High-speed fan motor

Info

Publication number: CN210273736U
Application number: CN201921475028.5U
Authority: CN
Inventors: 张震坚
Original assignee: Inatsu Electric Zhuhai Co ltd
Current assignee: Inatsu Electric Zhuhai Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-04-07
Anticipated expiration: 2029-09-06

Abstract

The utility model relates to a high-speed fan motor, which comprises a shell, an impeller, a rotating shaft, a shaft sleeve, a stator, a first bearing, a second bearing, a third bearing and a magnetic ring; the magnetic ring and the third bearing are sequentially arranged and fixed in the stator from top to bottom; the upper end of pivot is equipped with the impeller, and the lower extreme stretches into in the shell and rotationally wears to establish on first bearing, second bearing, magnetic ring and third bearing. Like this, the side vibration of magnetic ring is effectively retrained to the pivot that can rotate at a high speed under the interact of first bearing, second bearing and third bearing, and then reduces the noise and the wearing and tearing of first bearing, second bearing, third bearing that the vibration that dynamic balance too big arouses produced under the super high rotational speed, effectively improves pivot stability, and the stable performance is reliable, and life is longer.

Description

High-speed fan motor

Technical Field

The utility model belongs to the technical field of the motor, in particular to high-speed fan motor.

Background

At present, the rotating speed of the existing high-speed fan motor in the market is very high (the rotating speed is up to more than 60000 rpm) when the high-speed fan motor works, so the requirement on the dynamic balance precision of a rotor is very strict. However, the applicant found that: the rotor of the existing high-speed fan motor is easy to generate large rotor vibration and large noise under ultrahigh rotating speed due to overlarge dynamic balance, the performance is extremely unstable, and even bearing abrasion is caused, so that the service life of the motor is greatly shortened, and the component mainly causing the large dynamic balance of the rotor is a magnetic ring, so how to reduce the dynamic balance of the magnetic ring becomes an important research and development subject of the applicant.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a three bearing of accessible is to high-speed pivoted pivot interact, and the lateral vibration of effective restraint magnetic ring reduces the vibration that the magnetic ring caused, and the stable performance is reliable, long service life's high-speed fan motor.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a high-speed fan motor comprises a shell, an impeller, a rotating shaft, a shaft sleeve, a stator, a first bearing, a second bearing, a third bearing and a magnetic ring; the magnetic ring and the third bearing are sequentially arranged and fixed in the stator from top to bottom; the upper end of pivot is equipped with the impeller, and the lower extreme stretches into in the shell and rotationally wears to establish on first bearing, second bearing, magnetic ring and third bearing.

Furthermore, the third bearing is close to the lower end of the magnetic ring, and the lower end of the rotating shaft is located in the third bearing.

Furthermore, the rotating shaft, the shaft sleeve, the stator, the first bearing, the second bearing, the third bearing and the magnetic ring are coaxial.

Furthermore, the first bearing, the second bearing, the third bearing and the rotating shaft are in interference fit.

Further, the one end opening inner wall of shell is equipped with the radial bellied guide post of many circumferences, simultaneously the week side surface of stator is equipped with the draw-in groove, the card of draw-in groove one-to-one when the stator is installed in the shell is on the guide post.

The utility model discloses beneficial effect:

the above technical scheme, the utility model, can be under the main bearing that constitutes by first bearing and second bearing and the auxiliary bearing's that constitutes by the third bearing interact at high-speed pivoted pivot, effectively retrain the lateral vibration of magnetic ring, reduce the vibration that the magnetic ring arouses, and then reduce the noise and the wearing and tearing of first bearing, second bearing, third bearing that the vibration that dynamic balance arouses produced under super high rotational speed, effectively improve pivot stability, the stable performance is reliable, life is longer.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an embodiment of a high-speed fan motor according to the present invention;

fig. 2 is a schematic structural diagram of a housing in an embodiment of a high-speed fan motor according to the present invention;

fig. 3 is a schematic view of a partial structure of a stator in an embodiment of a high-speed fan motor according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 3:

the embodiment of the utility model provides a high-speed fan motor, including shell 1, impeller 2, pivot 3, axle sleeve 4 and stator 5 to and first bearing 6, second bearing 7, third bearing 8 and magnetic ring 9. The shaft sleeve 4 and the stator 5 are sequentially arranged in the shell 1 from top to bottom, the first bearing 6 and the second bearing 7 are respectively installed and fixed at the upper end and the lower end of the inside of the shaft sleeve 4, and the magnetic ring 9 and the third bearing 8 are sequentially installed and fixed in the inside of the stator 5 from top to bottom; the upper end of pivot 3 is equipped with impeller 2, and the lower extreme stretches into in the shell 1 and rotationally wears to establish on first bearing 6, second bearing 7, magnetic ring 9 and third bearing 8.

The concrete structure can be as follows: a plurality of guide posts 10 protruding in the radial direction of the circumference are arranged on the inner wall of an opening at one end of the shell 1, meanwhile, clamping grooves 11 are arranged on the circumferential side surface of the stator 5, and the clamping grooves 11 are correspondingly clamped on the guide posts 10 when the stator 5 is installed in the shell 1; the first bearing 6 and the second bearing 7 are respectively installed and fixed at the upper end and the lower end of the inside of the shaft sleeve 4, and the magnetic ring 9 and the third bearing 8 are sequentially installed and fixed inside the stator 5 from top to bottom; the rotating shaft 3, the shaft sleeve 4, the stator 5, the first bearing 6, the second bearing 7, the third bearing 8 and the magnetic ring 9 are coaxial, the third bearing 8 is close to the lower end of the magnetic ring 9, the lower end of the rotating shaft 3 is located in the third bearing 8, the first bearing 6, the second bearing 7, the third bearing 8 and the rotating shaft 3 are in interference fit, the stator 5 can be a 6-slot stator, and the magnetic ring 9 can be a 2-pole magnetic ring.

When the high-speed fan motor moves, high-speed pivoted pivot 3 is under the main bearing that comprises first bearing 6 and second bearing 7 and the auxiliary bearing's that comprises third bearing 8 interact, effective restraint magnetic ring 9's lateral vibration, reduce the vibration that magnetic ring 9 arouses, and then noise and first bearing 6 that the vibration that reduces dynamic balance and arouse produces under super high speed, second bearing 7, the wearing and tearing of third bearing 8 effectively improve pivot 3 stability, stable performance is reliable, long service life.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A high-speed fan motor is characterized by comprising a shell (1), an impeller (2), a rotating shaft (3), a shaft sleeve (4), a stator (5), a first bearing (6), a second bearing (7), a third bearing (8) and a magnetic ring (9); the shaft sleeve (4) and the stator (5) are sequentially arranged in the shell (1) from top to bottom, the first bearing (6) and the second bearing (7) are respectively fixedly arranged at the upper end and the lower end of the inside of the shaft sleeve (4), and the magnetic ring (9) and the third bearing (8) are sequentially fixedly arranged in the stator (5) from top to bottom; the upper end of the rotating shaft (3) is provided with an impeller (2), and the lower end of the rotating shaft extends into the shell (1) and is rotatably arranged on the first bearing (6), the second bearing (7), the magnetic ring (9) and the third bearing (8) in a penetrating mode.

2. A high speed fan motor according to claim 1, wherein the third bearing (8) is located near the lower end of the magnetic ring (9), and the lower end of the rotating shaft (3) is located inside the third bearing (8).

3. The high-speed fan motor according to claim 1 or 2, wherein the shaft (3), the shaft sleeve (4), the stator (5), the first bearing (6), the second bearing (7), the third bearing (8) and the magnetic ring (9) are coaxial.

4. The high-speed fan motor according to claim 1 or 2, wherein the first bearing (6), the second bearing (7) and the third bearing (8) are in interference fit with the rotating shaft (3).

5. The high-speed fan motor according to claim 1 or 2, wherein the inner wall of the opening at one end of the housing (1) is provided with a plurality of guide posts (10) protruding in the circumferential direction, and the circumferential side surface of the stator (5) is provided with clamping grooves (11), and the clamping grooves (11) are correspondingly clamped on the guide posts (10) when the stator (5) is installed in the housing (1).