CN210839083U

CN210839083U - Non-contact rotating electrical machine

Info

Publication number: CN210839083U
Application number: CN201921610162.1U
Authority: CN
Inventors: 凌栋; 张继勇
Original assignee: Hangzhou Fuyang Fuchuang Big Data Industry Innovation Research Institute Co ltd
Current assignee: Huarui Xinzhi Baoding Technology Co.,Ltd.; Zhejiang handrui Intelligent Technology Co., Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-23
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a non-contact rotating electrical machine, which comprises a variable frequency controller, a stator, a shaft and a rotor, wherein the variable frequency controller is connected with the stator, and the variable frequency controller outputs currents with different frequencies, sizes and shapes to the stator; the stator comprises a fixed disc, a stator coil and a stator core, wherein the stator coil is wound on the stator core, the section of the stator core is trapezoidal, and the stator coil and the stator core are fixed on the fixed disc to form concentric circles; the rotor comprises a turntable, S-pole permanent magnets and N-pole permanent magnets, the S-pole permanent magnets and the N-pole permanent magnets are arranged alternately in a ring shape to form concentric circles with the turntable, the cross section of each S-pole permanent magnet is trapezoidal, and the positions of the S-pole permanent magnets and the N-pole permanent magnets correspond to those of the stator coils; the shaft is fixedly connected with the center of the turntable. The utility model discloses realize non-contact's stator and rotor, to the equipment that needs often connect with the disconnection eliminated coupling part's wearing and tearing, reduce cost, increase of service life.

Description

Non-contact rotating electrical machine

Technical Field

The utility model belongs to the electromechanical field relates to a non-contact rotating electrical machines.

Background

The motor can be divided according to the structure and the working principle: can be divided into a direct current motor, an asynchronous motor and a synchronous motor; the rotor can be divided into the following parts according to the structure of the rotor: cage induction motors (older standards are known as squirrel cage asynchronous motors) and wound rotor induction motors (older standards are known as wound rotor asynchronous motors).

The electromagnetic DC motor is composed of stator magnetic pole, rotor (armature), commutator (commonly called as commutator), brush, casing and bearing, the stator magnetic pole (main magnetic pole) is composed of iron core and exciting winding; the permanent magnet type dc motor is also composed of a stator magnetic pole, a rotor, an electric brush, a housing, etc., the stator magnetic pole is made of permanent magnet (permanent magnetic steel), such as ferrite, alnico, neodymium iron boron, etc., the rotor is generally made of silicon steel sheets by laminating, and the number of slots of the rotor is less than that of the rotor of the electromagnetic type dc motor.

The single-phase asynchronous motor is composed of stator, rotor, bearing, casing and end cover.

The structure of three-phase asynchronous motor is formed from stator, rotor and other accessories.

The common feature of these motors is that the stator is assembled with the rotor, and the motor generates power which is connected to an external device through a shaft on the motor, and the power is transmitted to a desired device or apparatus through a connector.

However, in some devices or apparatuses, it is necessary to perform connection and disconnection operations frequently (for example, a food breaking machine, a juice extractor, a soymilk maker, etc.), such connectors generate noise, although an elastic material is attached to a portion where the connectors are connected in order to reduce noise, the noise is reduced, the noise is still generated, the elastic material is easily worn, the service life is affected, and the devices are complicated.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the technical scheme of the utility model is that: a non-contact type rotating electrical machine is provided,

comprises a variable frequency controller, a stator, a shaft and a rotor, wherein,

the variable frequency controller is connected with the stator and outputs currents with different frequencies, sizes and shapes to the stator; the stator comprises a fixed disc, a stator coil and a stator core, wherein the stator coil is wound on the stator core, the section of the stator core is trapezoidal, and the stator coil and the stator core are fixed on the fixed disc to form concentric circles; the rotor comprises a turntable, S-pole permanent magnets and N-pole permanent magnets, the S-pole permanent magnets and the N-pole permanent magnets are arranged alternately in a ring shape to form concentric circles with the turntable, the cross section of each S-pole permanent magnet is trapezoidal, and the positions of the S-pole permanent magnets and the N-pole permanent magnets correspond to those of the stator coils; the shaft is fixedly connected with the center of the turntable.

Preferably, a plurality of stator coils and stator cores are arranged on the fixed plate to form concentric circles with decreasing radiuses.

Preferably, a plurality of circles of circular rings with the S-pole permanent magnets and the N-pole permanent magnets arranged alternately are arranged on the rotating disc to form concentric circles with decreasing radiuses.

Preferably, the stator core is made of iron.

Preferably, the stator core is made of a magnetic material.

Preferably, a constant magnet is fixed at the center of the fixed plate.

Preferably, a constant magnet is fixed at the center of the turntable.

Preferably, the device further comprises a bearing sleeved on the shaft.

Preferably, the rotor further comprises a casing and an end cover, which form a sealed space for enclosing the rotor therein.

Preferably, the rotor cover is used for wrapping the rotor and is made of soft insulating materials.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses following beneficial effect has at least:

1. the rotor is sealed and separated from the stator, and no mechanical connection loss exists;

2. the variable frequency controller supplies currents with different frequencies, sizes and shapes to the stator coil according to requirements, the frequency determines the rotating speed of the rotary table, the size determines the torque acting on the shaft, and the different shapes are associated with the torque and the energy consumption;

3. the motor generates power and is connected with external equipment through a shaft, and the connection part needs to be frequently connected and disconnected, such as: broken wall cooking machine, juice extractor, soybean milk machine etc. have eliminated wearing and tearing and noise that the friction and the collision of coupling part lead to among the prior art, have prolonged life.

Drawings

Fig. 1 is a schematic structural view of a non-contact rotating electrical machine according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a non-contact rotating electrical machine according to another embodiment of the present invention;

fig. 3 is a schematic view of a stator structure of a non-contact rotating electrical machine according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a rotor of a non-contact rotating electrical machine according to an embodiment of 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 merely illustrative of the invention and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

Referring to fig. 1-3, including variable frequency controller 10, stator 20, rotor 30, shaft 40, bearings 50, and cutter head 60, wherein,

the variable frequency controller 10 is connected with the stator 20, and the variable frequency controller 10 outputs currents with different frequencies, sizes and shapes to the stator 20; the stator 20 comprises a fixed disc 21, a stator coil 22 and a stator core 23, wherein the stator coil 22 is wound on the stator core 23, the section of the stator core 23 is trapezoidal, and the stator coil 22 and the stator core 23 are fixed on the fixed disc 21 to form concentric circles; the rotor 30 comprises a rotary disc 31, an S-pole permanent magnet 32 and an N-pole permanent magnet 33, wherein the S-pole permanent magnet 32 and the N-pole permanent magnet 33 are arranged in a ring shape at intervals to form a concentric circle with the rotary disc 31, the section of the S-pole permanent magnet is trapezoidal, and the position of the S-pole permanent magnet corresponds to that of the stator coil 22; the shaft 40 is fixedly connected to the center of the turntable 31.

With the above arrangement, when the variable frequency controller 10 applies current to the stator coil 22, the magnetic field formed by the circular ring arranged between the S-pole permanent magnet 32 and the N-pole permanent magnet 33 in the rotor 30 and the circuit in the stator coil 22 form lorentz force, which pushes the S-pole permanent magnet 32 and the N-pole permanent magnet 33 to move forward, and when moving to the next magnetic field, the current flows in the reverse direction, so that the S-pole permanent magnet 32 and the N-pole permanent magnet 33 move in the reverse direction, and this mode determines the rotation speed of the rotary table 31 by changing the frequency of the current.

In the specific embodiment, a plurality of stator coils 22 and stator cores 23 are arranged on a fixed disc 21 to form concentric circles with decreasing radiuses; the turntable 31 is provided with a plurality of circles of circular rings which are arranged between the S-pole permanent magnet 32 and the N-pole permanent magnet 33 to form concentric circles with decreasing radiuses. The stator coils 22 and the stator core 23 on the fixed disc 21 correspond to the annular positions of the S-pole permanent magnets 32 and the N-pole permanent magnets 33 on the rotating disc 31 at intervals.

The stator core 23 may be made of iron or magnetic material, such as silicon steel, which attracts the S pole permanent magnet 32/N pole permanent magnet 33, increasing the stability of the motor during operation, and the magnetic material automatically fits the S pole permanent magnet 32/N pole permanent magnet 33 during placement.

A permanent magnet is fixed at the center of the fixed disk 21 or the rotary disk 31, when the rotor 30 is placed on the stator 20, the rotary disk 31 and the fixed disk 21 are correspondingly combined together by utilizing mutual attraction, the positions are automatically matched, and meanwhile, the stability of the motor in working is improved.

The bearing 50 is sleeved on the shaft 40 to play a role in supporting and lubricating.

Also included is a housing and end cap 60 which form a sealed space enclosing the rotor 30 therein.

Also included is a rotor cover 34, made of a soft insulating material, which encases the rotor 30.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A non-contact rotating electrical machine comprising a variable frequency controller, a stator, a shaft and a rotor, wherein,

2. The non-contact rotating electric machine according to claim 1, wherein the stator disc is provided with a plurality of stator coils and stator cores forming concentric circles with decreasing radii.

3. The non-contact rotating electrical machine according to claim 1, wherein the turntable is provided with a plurality of rings of S-pole permanent magnets and N-pole permanent magnets arranged alternately in a circular shape to form concentric circles having decreasing radii.

4. The non-contact rotating electric machine according to claim 1, wherein the stator core is made of iron.

5. The non-contact rotary electric machine according to claim 1, wherein the stator core is made of a magnetic material.

6. A non-contact rotating electric machine according to claim 1, wherein a constant magnet is fixed to the center of the fixed plate.

7. The non-contact rotating electric machine according to claim 1, wherein a constant magnet is fixed to the center of the turntable.

8. The non-contact rotating electrical machine according to claim 1, further comprising a bearing that is journaled on the shaft.

9. The non-contact rotating electric machine according to claim 1, further comprising a casing and an end cover which form a sealed space enclosing the rotor therein.

10. The non-contact rotary electric machine according to claim 1, further comprising a rotor cover, which encloses the rotor therein, and is made of a soft insulating material.