CN204906038U

CN204906038U - Rotor

Info

Publication number: CN204906038U
Application number: CN201520694293.8U
Authority: CN
Inventors: 林永祥; 朱振南; 罗志忠
Original assignee: Rechi Precision Co Ltd
Current assignee: Rechi Precision Co Ltd
Priority date: 2015-09-09
Filing date: 2015-09-09
Publication date: 2015-12-23
Anticipated expiration: 2025-09-09

Abstract

The utility model discloses a rotor is the nahlock form, runs through a shaft hole that supplies to wear to put the motor mandrel in center department, and this rotor uses this shaft hole and on average distinguishes into a plurality of magnetic force blocks as the center, runs through a magnet groove that supplies installation magnet in each magnetic force block department, wherein, this rotor is equipped with two at least shapes air gap hole of symmetry each other respectively in the central line both sides of each magnetic force block, and this air gap hole is less than 90 degrees rather than the contained angle between this adjacent magnet groove, can effectively restrain motor vibrations noise.

Description

Rotor

Technical field

The utility model relates to a kind of rotor, relates to a kind of rotor that effectively can suppress motor vibration noise especially.

Background technology

Press, Normal squeezing machine 100, as shown in Figure 1, its internal structure includes rotor 1 and stator 2.

The rotor of compressor most on the market at present utilizes permanent magnet to replace wire-wound, and what this type of rotor claimed is permanent magnet synchronous motor, is generally divided into and has surface permanent magnetic motor and built-in type permanent-magnet motor.Surface permanent magnetic motor is to paste the surface that magnet to be arranged at rotor by mode, but this kind of rotor is lower because of magnetic property, cannot produce reluctance torque, the necessity be improved in fact.Built-in type permanent-magnet motor then as shown in Figure 2; rotor 1 is provided with a plurality of magnet groove 11 and magnetic force block 12; this a plurality of magnet groove 11 is inserted with inserted mode for magnet; by this; magnet not only can be subject to the protection of magnet groove 11; not having the problem that magnet comes off when running up, more can produce reluctance torque further, lifting motor running efficiency.

But, it is parallel magnetization that the magnet of existing rotor 1 is arranged in magnet groove 11, is unfavorable for the formation of sineization air-gap field, thus just cannot reduced harmonic, and then stable torque output and as far as possible little radial electromagnetic force as far as possible cannot be obtained, make motor vibration noise relatively large.

Utility model content

Namely solved technical problem of the present utility model is providing a kind of rotor that effectively can suppress motor vibration noise.

The technological means that the utility model adopts is as described below.

According to the purpose of this utility model, propose a kind of rotor, in nahlock shape, run through one in center for the axis hole placing motor spindle, this rotor is on average distinguished into a plurality of magnetic force block centered by this axis hole, runs through one for the magnet groove installing magnet in each magnetic force block place; Wherein, this rotor is respectively equipped with the symmetrical air gap hole of at least two shapes in the center line both sides of each magnetic force block, and the angle between this magnet groove that this air gap hole is adjacent is less than 90 degree.

Preferably, each air gap hole is identical with the angle between magnet groove.

Preferably, each air gap hole is different from the angle between magnet groove.

Preferably, relatively close to the angle between the air gap hole of magnet groove center and magnet groove, be greater than relatively away from the angle between the air gap hole of magnet groove center and magnet groove.

Preferably, the pore width in the air gap hole of part is greater than the pore width in other air gap hole.

Preferably, relatively close to the pore width in the air gap hole of magnet groove center, be greater than relatively away from the pore width in the air gap hole of magnet groove center.

Preferably, each air gap pitch-row is all greater than 0.5mm from the outer peripheral edges of magnet groove and rotor.

Preferably, the quantity in air gap hole is even numbers.

Preferably, this rotor more comprises an axis hole, is located at the center of a plurality of magnet groove institutes forming region.

The beneficial effect that the utility model produces is as follows.

From the above, rotor of the present utility model is in order to improve vibrating noise, air gap hole is added to rotor outer periphery portion through outside rotor magnet, utilize the arrangement mode in air gap hole, revise air-gap field waveform, back emf waveform and reluctance torque ratio, obtain stable torque by this to export and less radial electromagnetic force, and then can effectively suppress motor vibration noise.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of compressor.

Fig. 2 is the schematic diagram of the rotor of prior art.

Fig. 3 is the first schematic diagram of the first embodiment of rotor of the present utility model.

Fig. 4 is the second schematic diagram of the first embodiment of rotor of the present utility model.

Fig. 5 is the 3rd schematic diagram of the first embodiment of rotor of the present utility model.

Fig. 6 is the first schematic diagram of the second embodiment of rotor of the present utility model.

Fig. 7 is the second schematic diagram of the second embodiment of rotor of the present utility model.

Fig. 8 is the first schematic diagram of the 3rd embodiment of rotor of the present utility model.

Fig. 9 is the second schematic diagram of the 3rd embodiment of rotor of the present utility model.

Figure 10 is the schematic diagram of the 4th embodiment of rotor of the present utility model.

Figure number illustrates:

100 compressors

1,10 rotors

2 stators

11,101 magnet grooves

12 magnetic force blocks

102 air gap holes

103 axis holes

A, B angle

D1, D2 pore width.

Embodiment

Refer to Fig. 3 to Fig. 5, it is respectively the first schematic diagram of the first embodiment of rotor of the present utility model, the second schematic diagram and the 3rd schematic diagram.This rotor 10 is built-in type permanent-magnet motor, and it is provided with a plurality of magnet groove 101 and axis hole 103, and each magnet groove 101 is respectively in order to provide magnet to embed.The notch of each magnet groove 101 is strip, and the annular arrangement of a plurality of magnet groove 101 is to form polygonal aspect, and axis hole 103 is located at the center of a plurality of magnet grooves 101 forming regions.Technical characteristics of the present utility model is, a plurality of air gap hole 102 is respectively arranged with between the outer peripheral edges of each magnet groove 101 to rotor 10, air-gap field waveform can be revised through those air gap holes 102, make air-gap field sineization, and back emf waveform and reluctance torque ratio can be revised, export and less radial electromagnetic force to obtain stable torque, and then suppress motor vibration noise.

In above-mentioned, the angle between the magnet groove 101 that a plurality of air gap hole 102 is adjacent is less than 90 degree, and in a first embodiment, each air gap hole 102 has identical included angle A with between magnet groove 101, as shown in Figure 5.

Refer to Fig. 6 and Fig. 7 again, it is respectively the first schematic diagram and second schematic diagram of the second embodiment of rotor of the present utility model.In a second embodiment, angle between the magnet groove 101 that a plurality of air gap hole 102 is adjacent is less than 90 degree equally, and each air gap hole 102 can be designed to not identical with the angle between magnet groove 101, such as shown in Fig. 7, relatively close to the included angle B between the air gap hole 102 at magnet groove 101 center and magnet groove 101, be greater than relatively away from the included angle A between the air gap hole 102 at magnet groove 101 center and magnet groove 101.

Continue and refer to Fig. 8 and Fig. 9, it is respectively the first schematic diagram and second schematic diagram of the 3rd embodiment of rotor of the present utility model.In the third embodiment, angle between the magnet groove 101 that a plurality of air gap hole 102 is adjacent is less than 90 degree equally, and the pore width in the air gap hole 102 of part is greater than the pore width in other air gap hole 102, such as shown in Fig. 9, relatively close to the pore width D1 in the air gap hole 102 at magnet groove 101 center, be greater than relatively away from the pore width D2 in the air gap hole 102 at magnet groove 101 center.

In the various embodiments described above, the quantity in air gap hole 102 is better is designed to four, but not as limit.In addition, each air gap hole 102 all must be greater than 0.5mm apart from the outer peripheral edges of magnet groove 101 and rotor 10, as shown in Figure 10.

In sum, rotor of the present utility model is in order to improve vibrating noise, air gap hole is added to rotor outer periphery portion through outside rotor magnet, utilize the arrangement mode in air gap hole, sineization air-gap field can be obtained, reduced harmonic, and then obtain stable torque output and as far as possible little radial electromagnetic force as far as possible, make motor performance efficient, motor vibration noise is little.

Claims

1. a rotor, in nahlock shape, run through one in center for the axis hole placing motor spindle, this rotor is on average distinguished into a plurality of magnetic force block centered by this axis hole, runs through one for the magnet groove installing magnet in each magnetic force block place; It is characterized in that:

This rotor (10) is respectively equipped with the symmetrical air gap hole (102) of at least two shapes in the center line both sides of each magnetic force block, the angle between this magnet groove (101) that this air gap hole (102) is adjacent is less than 90 degree.

2. rotor as claimed in claim 1, it is characterized in that, the angle (A) respectively between this air gap hole (102) with this magnet groove (101) is for identical.

3. rotor as claimed in claim 1, it is characterized in that, the angle respectively between this air gap hole (102) from this magnet groove (101) is different.

4. rotor as claimed in claim 3, it is characterized in that, relatively close to the angle (B) between this air gap hole (102) at this magnet groove (101) center and this magnet groove (101), be greater than relatively away from the angle (A) between this air gap hole (102) at this magnet groove (101) center and this magnet groove (101).

5. the rotor as described in as wherein arbitrary in Claims 1-4, it is characterized in that, the pore width in this air gap hole (102) of part is greater than the pore width in other this air gap hole (102).

6. rotor as claimed in claim 5, wherein relatively close to the pore width (D1) in this air gap hole (102) at this magnet groove (101) center, be greater than relatively away from the pore width (D2) in this air gap hole (102) at this magnet groove (101) center.

7. the rotor as described in as wherein arbitrary in Claims 1-4, it is characterized in that, respectively this air gap hole (102) is all greater than 0.5mm apart from the outer peripheral edges of this magnet groove (101) and this rotor (10).

8. as Claims 1-4 arbitrary as described in rotor, it is characterized in that, the quantity in this air gap hole (102) is even numbers.

9. rotor as claimed in claim 1, is characterized in that, comprise an axis hole (103), be located at the center of this plurality of magnet groove (101) institutes forming region.