CN2086016U

CN2086016U - Permasyn motor with non-symmetrical stator claw-poles

Info

Publication number: CN2086016U
Application number: CN 91213567
Authority: CN
Inventors: 杨力
Original assignee: NANJING FAN FACTORY
Current assignee: NANJING FAN FACTORY
Priority date: 1991-04-19
Filing date: 1991-04-19
Publication date: 1991-10-02

Abstract

The utility model relates to a permasyn motor with small power single-phase claw-poles. The rotor of the permasyn motor with small power single-phase claw-poles is uniformly distributed along the N pole and S pole of the cylindrical surface of a multi-antipodal permanent magnet. A stator mainly comprises a coil and two claw type electric magnetic poles sheathed on both ends of the coil, a plurality of claw fingers of the stator claw-poles are uniformly distributed along a cylindrical surface, and the claw fingers are oppositely bent, adjacent and cross, and spaced one by one from both ends. The permasyn motor with small power single-phase claw-poles is characterized in that the bent claw fingers of the stator claw-poles is asymmetrical shape along the cylindrical surface, one side of the claw fingers is parallel to a rotating shaft, and the other side of the claw fingers is step-shaped, so the claw fingers whose shape suddenly turn narrow from wide is formed. The utility model has an obvious performance for directional assistance starting.

Description

Permasyn motor with non-symmetrical stator claw-poles

The utility model relates to a kind of permagnetic synchronous motor, the single-phase claw-pole permanent magnet synchronous motor of particularly a kind of small-power.

Single-phase claw-pole permanent magnet synchronous motor has purposes widely, especially power number watt is to tens of watts, do not have split-pole, pay winding, start electric capacity, isostructure this class motor of hysteresis material, have structure light and handy, make easy, power consumption is very little, realize constant many characteristics such as the slow-speed of revolution easily, but need to solve staring torque and turn to indefinite problem.When drive fan blade and so on have directedly require, during sizable load, the solution difficulty of this problem is more outstanding again for the moment of inertia square.Usually the mechanical system that can take to acquire starter or finder and so on motor solves, and this is a kind of prior art.Starter but miscellaneous or finder all are difficult to satisfy simultaneously many-sided requirements such as moment is sufficient, easy, reliable, noiseless.Except can be, can also utilize the variation of the electromagnetic structure of motor own to improve the directional starting performance of motor on the other hand to this further research and development.Take each not wide not uniform again method can realize directed the startup to the electromagnetism pawl utmost point of stator, this also is a prior art, but because starting torque is little, it is quite complicated that structure but becomes, and is difficult to widespread usage.In fact single-phase claw-pole permanent magnet synchronous motor substantially all is that pawl type electromagnetic pole and multipole permanent magnet number of poles are equal, the uniform complete symmetric mode along the face of cylinder respectively, structure is easy, running is steady though it has, strong points such as efficient height, but start-up course self does not have directionality.

The purpose of this utility model is exactly in order to overcome the problems referred to above, provides a kind of claw pole stator that has orientation to help startability asymmetric shape permagnetic synchronous motor.

Implement the integral body composition that the technical solution of the utility model does not change single-phase claw-pole permanent magnet synchronous motor, rotor is extremely alternate uniform along face of cylinder N.S by many permanent magnets to the utmost point, stator mainly comprises coil and is enclosed within the pawl type electromagnetic pole at two ends, that some pawls of claw pole stator refer to is curved in opposite directions from two ends, it is adjacent, alternate, uniform along the face of cylinder one by one to intersect, the face of cylinder of above-mentioned rotor is coaxial, and suitable gap is arranged, electromagnetic action takes place mutually during energising.Characteristics of the present utility model are, curved pawl refers to be asymmetric shape to claw pole stator along the face of cylinder, pawl refers to it highly is with the suitable long pawl utmost point of coil height, and two limits that pawl refers to are asymmetric, Yi Bian be the straight line with shaft parallel, it is step-like that another side is, formation is by the wide pawl finger-type shape that suddenly narrows down, and the pawl of claw pole stator refers to the width of narrow part, be its wide part 1/3rd to two of branch, the length of narrow part is for curved pawl refers to 1/3rd to 2/3rds of length overall along the face of cylinder.Pawl refers to refer to the top by wide junction that suddenly narrows down and pawl, answers arts demand and modification, can take random geometry.

Figure of description.

Fig. 1 is that a slice claw pole stator launches schematic diagram in the utility model;

Fig. 2 is claw pole stator of the present utility model and permanent magnet external rotor connection diagram.

As Fig. 1,2, the motor stator pawl utmost point 1 of the present utility model, its pawl refers to stop be with facing to the neutrality of the p-m rotor 2N utmost point and S interpolar during outage, but because it is asymmetric shape, pawl refers to follow the departure degree of the adjacent N utmost point in the left and right sides or the S utmost point different, connect alternating current, the pawl of claw pole stator 1 refers to towards the active force of left and right sides both direction inequality, refer to by wide to narrow structure owing to pawl simultaneously, make pawl refer to that the magnetic flux distribution of electromagnetic action face is even, strengthened the electromagnetic action between stator and rotor, made to the utlity model has the function that orientation helps startup.Fig. 2 is the embodiment of the utility model as low speed electric fan drive motors.

The good effect of the technical program is to keep on the whole the uniform and symmetry characteristic of motor multi-polar structure, motor does not change whole the composition, by the localized variation to claw pole stator, pawl refers to consist of specific asymmetrical shape, make motor reduce loss, raise the efficiency, when more giving full play to low power finite energy, possess significant orientation and help startability. Compared with prior art, have realize easy, reduce the advantages such as loss, effect be remarkable.

Claims

1, the asymmetric shape permagnetic synchronous motor of a kind of claw pole stator, its rotor by many permanent magnets to the utmost point along face of cylinder N, S is extremely alternate uniform, stator mainly comprises coil and is enclosed within the pawl type electromagnetic pole at two ends, some pawls of claw pole stator refer to curved in opposite directions from two ends, intersect adjacent, alternate one by one, uniform along the face of cylinder, above-mentioned fixed, the face of cylinder of rotor is coaxial, and suitable gap arranged, it is characterized in that, curved pawl refers to be asymmetric shape to claw pole stator 1 along the face of cylinder, pawl refers to it highly is with the suitable long pawl utmost point of coil height, two limits that pawl refers to are asymmetric, be straight line on one side with shaft parallel, it is step-like that another side is, formation is by the wide pawl finger-type shape that suddenly narrows down, the pawl of claw pole stator 1 refers to the width of narrow part, is 1/3rd to 2/3rds of its wide part, and pawl refers to that the length of narrow part is for curved pawl refers to 1/3rd to 2/3rds of length overall along the face of cylinder.

2, by the asymmetric shape permagnetic synchronous motor of the described claw pole stator of claim 1, the pawl that it is characterized in that claw pole stator 1 refers to refer to that by wide junction that suddenly narrows down and pawl the top can take random geometry according to arts demand and modification.