CN211880196U

CN211880196U - Reluctance-free motor

Info

Publication number: CN211880196U
Application number: CN202020651829.9U
Authority: CN
Inventors: 沈榆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-11-06
Anticipated expiration: 2030-04-28

Abstract

The application discloses no magnetic resistance motor includes: a rotor set and a stator set; the stator group comprises a winding, a coil holder and a circular ring iron core. The rotor set comprises a magnet, a shaft, a rotor iron core and a balance sheet. The winding is fixed on the outer wall of the coil holder, the winding is limited between the inner wall of the annular iron core and the outer wall of the coil holder, and the rotor iron core is limited between the two balance pieces.

Description

Reluctance-free motor

Technical Field

The utility model relates to a motor.

Background

The motor generates mechanical rotational motion using electromagnetic conversion. Generally, the motor can only be used as a single motor, i.e. the motor is energized to produce a rotational movement.

In the working process of the existing motor, the temperature rise of a stator part of the motor rotating at a high speed is high, for example, a stator core generates temperature due to electromagnetic eddy current; a rotor portion of a motor rotating at a high speed generates a large noise, such as a "cogging" generated between a magnet of the rotor portion and a cogging of a stator core; these factors can reduce the efficiency and performance of the motor.

In some occasions, the motor is required to be used as a motor and a generator; for example, a turbo-charger fan, when the motor is electrified, the turbine rotates to generate airflow, otherwise, when the airflow passes through the turbine, the motor is driven to rotate to generate current which is rectified and converted into electric energy; for another example, a vane pump, the motor is energized to deliver fluid as it flows through the vane pump and vice versa to generate electricity. In such situations, uncertain environmental factors such as weak airflow and water flow power exist, and when the resistance generated by the motor 'cogging' is large, the power generation work is difficult after the rotor is blocked.

Therefore, the reluctance-free motor can effectively solve the problem caused by the cogging effect.

SUMMERY OF THE UTILITY MODEL

The utility model provides a there is not magnetic resistance motor includes: a stator group; a rotor set; the stator group comprises windings, a coil holder and a circular ring iron core, and the stator group comprises a circular ring iron core, a coil holder and at least three windings; the rotor set comprises a magnet, a shaft, a rotor iron core and a balance sheet. The rotor core is limited between two balance sheets, and the number of the balance sheets is at least two; because the magnets are divided into N poles and S poles, the number of the magnets embedded in the rotor core is integral multiple of 2, and the number of the magnets is at least two.

The winding is formed by winding self-adhesive enameled wires into an air-core coil through a die, and is solidified into a whole instead of being wound on the circular iron core. Therefore, the annular iron core can save stator slots, which is beneficial to reducing the 'cogging effect', the winding can be wound more compactly, and the 'slot filling rate' of the reluctance-free motor is further improved, so that the overall efficiency is improved.

The winding comprises a plurality of hollow coils which are uniformly arranged and fixed on the coil holder, are combined into a whole and are fixed in the circular iron core.

The thread frame comprises at least three separating threads, at least three thread holes, positioning salient points and at least one positioning groove. The windings are uniformly distributed among the separation warps, and the separation warps can fix the windings and ensure good insulation and uniform distribution among the adjacent windings; the wire ends of the windings pass through the threading holes of the wire frame and can be welded on a PCB (not shown in the attached drawing), and the PCB can be orderly fixed on the wire frame through the positioning salient points; the positioning groove can be connected with a shell (not shown in the attached drawing) to prevent the winding and the wire frame from slipping in the rotation process of the motor.

The winding and the bobbin are concentrically fixed on the inner wall of the circular iron core.

The reluctance-free motor further comprises a rotor set, magnets are uniformly embedded in grooves of the rotor core, balance pieces are fixed on two sides of the rotor core, and dynamic balance errors of the rotor set can be reduced by correcting the weights of the balance pieces.

Because the magnet is embedded in the rotor iron core instead of an integral magnetic cylinder, the cost of the magnetic material is reduced, the magnet mounting process is simplified, and the magnet is prevented from being thrown away by centrifugal force when the reluctance-free motor rotates at high speed; meanwhile, the plurality of windings are used for simplifying the manufacturing process of the whole stator group winding under the action of the wire frame, so that the production and manufacturing cost of the reluctance-free motor is reduced.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a cross-sectional view of the present invention; fig. 2 is a perspective view of the present invention; FIG. 3 is a diagram of a wire holder according to the present invention; fig. 4 is a structural diagram of the present invention.

The specific implementation mode is as follows:

fig. 1 shows a cross-section of a reluctance-free motor, fig. 2 shows a perspective view of the reluctance-free motor, fig. 3 shows a bobbin of the reluctance-free motor, and fig. 4 shows a structure of the reluctance-free motor. As shown in fig. 4, a rotor assembly 10 of a reluctance-free motor includes a balance sheet 11, a rotor core 12, magnets 13, and a shaft 14, wherein the magnets 13 are uniformly embedded in the rotor core 12, the balance sheets 11 are fixed to both sides of the rotor core 12, and the rotor core 12 and the balance sheets 11 are concentrically inserted through the shaft 14 and fixed to each other, thereby forming the rotor assembly 10.

As shown in fig. 3, the bobbin 21 includes a positioning groove 211, the outer wall 215 includes a plurality of partition channels 212, the inner wall 214 and the outer wall 215 form a cylinder, and a plurality of threading holes 213 are uniformly distributed at one end of the cylinder;

as shown in fig. 4, the windings 22 are fixed on the outer wall 215, and each winding is separated by a separation line 212, so that the windings 22 are uniformly distributed, and the ends 221 pass through the threading holes 213, thereby forming the stator assembly 20.

As shown in fig. 1 and 2, the windings 22 are fixed by the bobbin 21 and inserted into the inner wall 231 of the toroidal core 23, the rotor assembly 10 is defined between the inner wall 214 of the bobbin 21, and the windings are defined between the inner wall 231 and the outer wall 215 of the toroidal core.

In conclusion, the reluctance-free motor has the advantages that the tooth grooves of the iron core are omitted, and the circular iron core is adopted, so that the effects of eliminating reluctance, reducing running noise and temperature rise are achieved; because the winding is fixed by using the wire frame, the production and manufacturing process is simplified; the magnet is embedded in the rotor core, so that the cost of the magnetic material is reduced; because the winding can be wound more densely, the operation efficiency of the motor is improved.

While the embodiments have been described, it should be understood that various modifications may be made without departing from the scope of the invention as defined by the claims.

Claims

1. There is not magnetic resistance motor, its characterized in that includes: a stator set and a rotor set; the stator group comprises a winding, a wire frame and a circular ring iron core; the rotor group comprises a magnet, a shaft, a rotor iron core and a balance sheet; the winding is fixed on the outer wall of the coil holder, the winding is limited between the inner wall of the annular iron core and the outer wall of the coil holder, and the rotor iron core is limited between the two balance pieces.

2. The reluctance-free motor of claim 1, wherein the stator assembly comprises a toroidal core and a bobbin and at least three windings.

3. The reluctance-free motor of claim 2, wherein the bobbin comprises at least three partitions, at least three threading holes, and at least one positioning groove.

4. The reluctance-free motor of claim 2, wherein the thread ends of the windings pass through the threading holes of the bobbin.

5. The reluctance-free motor of claim 1, wherein the rotor assembly comprises a rotor core, at least two magnets, and at least two balance plates.