CN109560677A

CN109560677A - A kind of high-speed motor

Info

Publication number: CN109560677A
Application number: CN201910101078.5A
Authority: CN
Inventors: 张震坚
Original assignee: Daojin Electric Machinery (zhuhai) Co Ltd
Current assignee: Daojin Electric Machinery (zhuhai) Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2019-04-02

Abstract

The invention relates to the technical field of motors, and specifically discloses a high-speed motor, comprising: a casing, a bearing bracket, a rotor and a stator; the bearing bracket is provided with a shaft hole, and a bearing is installed in the shaft hole; a 2-pole magnetic ring rotor is surrounded by the inner hole Fixed on the rotating shaft on one side of the bearing bracket, the magnetic field of the 2-pole magnetic ring rotor radiates in the radial direction with the rotating shaft as the center; there are 6 tooth slots evenly distributed in the circumferential direction of the stator, and each tooth slot is provided with a concentrated The windings in the opposite two tooth slots are of the same phase, and the windings in the opposite two tooth slots are wound in opposite directions. The invention makes the stator winding and the rotor generate symmetrical magnetic field, fully solves the problems of noise, vibration and short life caused by radial force caused by the asymmetric force of the 2-pole rotor in the asymmetrical magnetic field, and at the same time improves the motor's performance. efficiency.

Description

A kind of high-speed motor

Technical field

The present invention relates to motor technologies fields, and in particular to a kind of high-speed motor.

Background technique

Current existing use superfast field (30000rpm or more) motor, in order to reach high revolving speed, magnetic field Part is substantially using the magnetic field matching method of 3 phase, 3 slot, 2 pole or single-phase 4 slot, 2 pole, single-phase 2 slot, 2 pole, and which results in motors in iron core Volume on need to be made larger, in addition the magnetic field of 3 slot, 2 pole is when each phase is powered, since the Distribution of Magnetic Field of itself is not right Claim, rotor is caused to generate a radial component when being rotated by magnetic force, makes rotor that a periodically vibration occur, affect Noise and vibration of the motor when ultrahigh speed rotates, and then influence the service life of motor.And single-phase 4 slot, 2 pole or single-phase 2 slot, 2 pole Magnetic field matching method, since rotor rotates a circle, phase be respectively necessary for switching 4 times, 2 times, so that it may complete a cycle, institute Poor with the rotary speed precision in fixed rotating speed, in addition the efficiency of single-phase motor is lower with respect to for three-phase motor.

Summary of the invention

Based on the deficiencies of the prior art, the present invention provides a kind of high-speed motors, to allow motor rotor can be in superelevation Still stable rotation under revolving speed, allows rotor uniform force, reduces vibrating noise, improves precision and the motor longevity of motor rotary speed Life.

The technical solution of the present invention is as follows:

A kind of high-speed motor characterized by comprising

Shell, both ends penetrate through and accommodation space is contained in inside；And

The support of bearing is arranged in the accommodation space of shell, and fixes with shell, and axis hole, axis are provided on the support of bearing Hole is provided with bearing, the inner hole interference fit of rotary shaft and bearing 3；

Rotor, using 2 pole magnet rings, 2 pole magnet rings are fastened around in the rotary shaft of support of bearing side by its inner hole；

Stator, the periphery of stator and the inner wall of shell are fixed, and the inner circumferential of stator is set in rotor outer periphery, the inner circumferential of stator with Rotor outer periphery interval is evenly equipped with 6 tooth sockets on stator circumference direction, winding, two opposite teeth is provided in each tooth socket Winding in slot is same phase, and the opposite winding technique of same phase is contrary.

Further, 6 windings are centered on rotary shaft to radial radially arrangement setting.

Further, each winding is concentratred winding.

Further, the tail end connection triangular in shape or star-like connection of the same phase winding in opposite tooth socket.

Further, the opening direction of two windings in opposite tooth socket is point-blank.

Further, be provided with several grooves in the peripheral direction of the stator, on the outer casing inner wall with groove It is provided with protrusion, groove and male cooperation on corresponding position, is fixed to each other.

Further, the groove is vertical-shaped recessed on the axial direction along rotary shaft being evenly arranged on stator excircle Slot.

Further, the rotor is spelled by the identical semiorbicular magnet of two structures for being saturated acquisition of magnetizing by orientation At a semicircle magnet is the pole N, another half-ring-shaped magnets is the pole S.

Further, a ladder, rank are additionally provided on the circumference of the axis hole of the inside and bearing spacer of the support of bearing Bearing prepressing force spring is provided between ladder and bearing, the central through hole that rotary shaft passes through the pre-compressed spring is arranged.

Further, the support of bearing has the axle sleeve of flange using side, and axis hole is the axle sleeve hole, described outer Shell side includes the mounting portion with axis hole, and the flange on the support of bearing and mounting portion overlap joint are fixed.

The invention has the benefit that passing through the electricity for 6 slot, 2 pole magnetized to magnet ring field waveform using certain orientation saturation Magnetic structure design enables stator winding to generate symmetrical magnetic field when inputting driving current, sufficiently solves 2 pole rotors not right Stress is asymmetric in the magnetic field of title, and noise caused by the radial force of generation, vibration improve the efficiency of motor, while substantially subtracting Blower motor outer diameter is lacked, has reduced the volume of motor, reduce cost.

Detailed description of the invention

Fig. 1 is assembly diagrammatic cross-section of the invention；

Fig. 2 is shell section figure of the invention；

Fig. 3 is stator structure schematic diagram of the invention；

Fig. 4 is rotor structure schematic diagram of the invention；

Fig. 5 is the structural schematic diagram of 2 pole magnet ring rotors of the invention；

Fig. 6 is star winding attachment structure schematic diagram of the invention；

Fig. 7 is delta windings attachment structure schematic diagram of the invention.

Specific embodiment

Below with reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in detail.It should be noted that in the feelings not conflicted Under condition, the feature in following embodiment and embodiment can be combined with each other.

As shown in Figs 1-4, a kind of high-speed motor, comprising:

Shell 1, both ends penetrate through and accommodation space is contained in inside；

The support of bearing 2 is arranged in the accommodation space of shell 1, and fixes with shell, is provided with axis hole on the support of bearing 2, Axis hole is provided with bearing 3, the inner hole interference fit of rotary shaft 4 and bearing 3；

Rotor 5, is 2 pole magnet ring rotors, and 2 pole magnet ring rotors are fastened around the rotation of support of bearing side by its inner hole On axis 4, the magnetic field of 2 pole magnet ring rotors, as shown in Figure 5；

Stator 6, the periphery of stator 6 and the inner wall of shell 1 are fixed, and the inner circumferential of stator 6 is set in 5 periphery of rotor, stator 6 Inner circumferential and the outer weekly interval of rotor 5 are evenly equipped with 6 tooth sockets 61 on 6 circumferencial direction of stator, are provided with concentratred winding in each tooth socket 7, as shown in Figure 6 and shown in Fig. 7, the winding 7 in two opposite tooth sockets is same phase, and with the opposite winding technique direction of phase On the contrary, winding connection has triangle connection and star-like connection two ways.

By being uniformly distributed 6 tooth sockets in stator core circumference, a winding, opposite tooth are provided in each tooth socket Slot constitutes a pair of of tooth socket group, the opening direction of two windings in a pair of of tooth socket group point-blank, and coiling coiling direction On the contrary, its sense of current is on the contrary, simultaneously, rotor is 2 pole magnet ring structures, in this way when i.e. driving current inputs a wherein phase winding So that stator winding and rotor is generated symmetrical magnetic field, sufficiently solves noise caused by the unbalance stress of magnetic field, vibration, improve horse The efficiency reached, while blower motor outer diameter is greatly reduced, reduce the volume of motor, reduces cost.

6 windings 7 are centered on rotary shaft to radial radially arrangement setting.Two in opposite tooth socket around The opening direction of group is point-blank.

Several grooves 62 are provided in the peripheral direction of the stator 6, right with groove 62 on the inner wall of the shell Protrusion 11 is provided on the position answered, groove 62 and protrusion 11 cooperate, be fixed to each other.

The groove 62 is the vertical-shaped groove being evenly arranged on the axial direction along rotary shaft on stator excircle.

Protrusion 11 can be integrally formed in processing with shell 1, and protrusion 11 cooperates with groove 62, limit 6 phase of stator Axial direction rotation for circumference.

Be additionally provided with a ladder 21 on the circumference of the axis hole of the inside and bearing spacer of the support of bearing 2, ladder 21 with Bearing prepressing force spring 7 is provided between bearing, bearing prepressing force spring 7 is fastened between ladder and bearing, bearing prepressing force spring 7 Side and ladder face contact, the other side are contacted with bearing outer ring to provide bearing prepressing force power, and rotary shaft 4 passes through the pre-compressed spring 7 central through hole setting.

The support of bearing 2 has the axle sleeve of flange 22 using side, and axis hole is the axle sleeve hole, the shell 1 Side have with the integrally formed bottom surface mounting portion 12 of shell, the via hole of rotary shaft, institute are provided in the middle part of the mounting portion of bottom surface Flange 22 and the axis hole mounting portion overlap joint stated on the support of bearing 2 are fixed, and flange 22 can ride over the outer of bottom surface mounting portion Portion can also be overlapped on the inside of bottom surface mounting portion, be both provided with hole on flange 22 and bottom surface mounting portion, can be carried out by screw Installation is fixed, and rotary shaft is pierced by bottom surface mounting portion by the via hole on the mounting portion of bottom surface.

Embodiment belonging to above only expresses concentration embodiment of the invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as, it is noted that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

1. a high-speed motor, is characterized in that, comprises:

an outer shell with two ends penetrating through and containing a receiving space inside; and

The bearing bracket is arranged in the accommodating space of the shell and fixed with the shell, the bearing bracket is provided with a shaft hole, a bearing is installed in the shaft hole, and the rotating shaft has an interference fit with the inner hole of the bearing 3;

The rotor adopts a 2-pole magnetic ring, and the 2-pole magnetic ring is fixed on the rotating shaft on one side of the bearing bracket through its inner hole;

Stator, the outer circumference of the stator is fixed with the inner wall of the casing, the inner circumference of the stator is sleeved on the outer circumference of the rotor, the inner circumference of the stator is spaced from the outer circumference of the rotor, and there are 6 tooth slots evenly distributed in the circumferential direction of the stator, and each tooth slot is provided with The windings in the two opposite tooth slots are of the same phase, and the opposite windings of the same phase are wound in opposite directions.

2 . The high-speed motor according to claim 1 , wherein the six windings are arranged radially with the rotating shaft as the center. 3 .

3. The high-speed motor of claim 2, wherein each winding is a concentrated winding.

4. The high-speed motor according to any one of claims 1-3, wherein the windings are wound in a delta connection or a star connection.

5 . The high-speed motor according to claim 2 , wherein the opening directions of the two windings in the opposite tooth slots are on a straight line. 6 .

6. The high-speed motor according to claim 1, wherein a plurality of grooves are provided on the outer circumferential direction of the stator, and protrusions are provided on the inner wall of the casing at positions corresponding to the grooves, and the grooves Cooperate with the protrusions and fix each other.

7 . The high-speed motor according to claim 6 , wherein the grooves are vertical grooves uniformly distributed on the outer circumference of the stator along the axial direction of the rotating shaft. 8 .

8. The high-speed motor according to claim 1, wherein the rotor is composed of two semi-ring magnets with the same structure obtained by directional saturation magnetization, one semi-circular magnet is N pole, the other The semi-ring magnet is S pole.

9 . The high-speed motor according to claim 1 , wherein a step is provided on the circumference of the shaft hole spaced between the inside of the bearing bracket and the bearing, and a bearing pre-compression spring is arranged between the step and the bearing. It is arranged through the central through hole of the pre-compression spring.

10 . The high-speed motor according to claim 9 , wherein the bearing bracket adopts a shaft sleeve with a flange edge on one side, the shaft hole is the shaft sleeve hole, and one side of the housing includes a shaft hole with a shaft hole. 11 . The mounting part, the flange on the bearing bracket is overlapped and fixed with the mounting part.