CN211701647U

CN211701647U - Electric motor

Info

Publication number: CN211701647U
Application number: CN201920881215.7U
Authority: CN
Inventors: 张保龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-10-16
Anticipated expiration: 2029-06-13

Abstract

The utility model provides a motor, which comprises a motion part and a stator coil, wherein the motion part consists of more than one permanent magnet and more than one magnetic conduction part; the permanent magnets are uniformly distributed and are opposite to the same magnetic poles; the permanent magnets are axially magnetized; the magnetic conduction part is arranged in a gap between the adjacent permanent magnets; the magnetic conduction parts are all made of ferromagnetic materials; the magnetic conduction part is fixedly connected with the permanent magnet; the moving part is arranged in the moving part fixing device; the stator coil is sleeved outside the motion part and fixed in the stator coil fixing device; the stator coil fixing device is made of a magnetic conductive material. The utility model discloses a design magnetic material and the motion portion that the permanent magnet is constituteed to permanent magnet is the structure in opposite directions at the same level, deuterogamies the stator coil, and the stator coil is whole to be used in the tangential direction with the interact power (magnetic field force and ampere force) of motion portion, and the torque angle is invariably zero, and the performance and the efficiency of motor also improve.

Description

Electric motor

Technical Field

The utility model relates to the technical field of electric machines, in particular to motor.

Background

A Motor is a device that generates a rotating magnetic field by using an electrified coil (i.e., a stator winding) and acts on a rotor to form a magnetic-electric power rotating torque, thereby converting electric energy into mechanical energy. Motors are classified into dc motors and ac motors according to the power source used. At present, the motor is widely applied to the mechanical manufacturing industry, the metallurgical industry, the coal industry, the petroleum industry, the light textile industry, the chemical industry and other various mine enterprises, and plays an important role in the development of national economy.

The motor generally includes a rotor and a stator, and rotates the rotor using an ampere force or a magnetic field force and outputs power through an output shaft. An included angle exists between the magnetic field force between the stator magnetic field and the rotor magnetic field of the existing motor and the motion direction of the rotor, the included angle is a torque angle, the torque angle changes within a range, and the tangential component of the magnetic field force between the stator magnetic field and the rotor magnetic field drags the rotor to rotate. The torque angle of the existing motor is not constant to zero, and the efficiency of the motor still has a promotion potential.

CN108475977A relates to a device for converting mechanical energy generated by a vibrating motion into electrical current using permanent magnets and coils. The technical scheme comprises the following steps: a cylindrical housing; two cylindrical magnetic cores having axial magnetization, said magnetic cores being arranged within a cylindrical housing, wherein like poles face each other; two cylindrical coils having axial windings, said coils being disposed on a cylindrical housing above respective magnetic cores; and the solution is provided with cylindrical coils with radial windings arranged on a cylindrical shell between cylindrical coils with axial windings. Wherein the cylindrical housing 11 has openings 8, 9, 10 providing free air circulation without disturbing the axial movement of the first magnetic core 1. The technical effect is to convert the mechanical energy generated by the vibration motion into current, but the efficiency is not as good as that of the traditional generator. The development and popularization of high-efficiency motors are not slow enough.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a motor to overcome the technical problem that the torque angle of the existing motor is not constant zero and the efficiency is to be improved. In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an electric motor, said electric motor comprising

The motion part comprises more than one permanent magnet which is magnetized in the axial direction and more than one magnetic conduction part; the permanent magnets are uniformly distributed and are opposite to the same magnetic poles; the magnetic conduction part is arranged in a gap between the adjacent permanent magnets; the magnetic conduction part is fixedly connected with the permanent magnet, and the motion part is arranged in the motion part fixing device; and

and the stator coil is sleeved outside the moving part and is fixed in the stator coil fixing device.

Further, the ferromagnetic material is a silicon-iron alloy with the silicon content of 0.5-4.8%.

Further, the combination of the at least one permanent magnet and the at least one magnetic conductive part is annular.

Further, the motor also comprises a transmission mechanism.

Further, the transmission mechanism comprises

A gear provided outside the moving part; and

teeth arranged on the outer surface of the moving part;

the gear is engaged with the teeth.

Furthermore, the combination of more than one permanent magnet and more than one magnetic conduction part is linear.

Compared with the prior art, the utility model discloses following advantage has:

the utility model discloses a design magnetic material and the motion portion that the permanent magnet is constituteed to permanent magnet relative structure at the same level, the stator coil of close winding of deuterogamying, magnetic conduction portion is equivalent to stator coil's iron core, stator coil and permanent magnet produce magnetic field force in magnetic conduction portion, and permanent magnet repellent's magnetic field produces ampere force through partial stator coil, and the total effect of interaction force (magnetic field force and ampere force) is in the tangential direction, and the torque angle is invariable zero, and the performance and the efficiency of motor also improve. And simultaneously, the utility model discloses a structure of motor no traditional motor stator tooth's socket does not have horizontal marginal effect, primary winding high-usage (stator does not have end winding), does not have traditional motor stator tooth's socket again, has avoided harmonic, the pulse that consequently produces to shake.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of an electric motor according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of an electric motor according to embodiment 2 of the present invention;

description of the drawings:

1-a bearing; 2-a gear; 3-tooth; 4-a magnetic conductive part; 201-a first stator coil; 202-a second stator coil; 203-a third stator coil; 204-a fourth stator coil; 205-a fifth stator coil; 206-a sixth stator coil; 207-seventh stator coil; 208-an eighth stator coil; 209-ninth stator coil; 210-a tenth stator coil; 211-an eleventh stator coil; 212-a twelfth stator coil; 221-twenty-first stator coil; 222-a twenty-second stator coil; 223-the twenty-third stator coil; 224-a twenty-fourth stator coil; 225-a twenty-fifth stator coil; 226-twenty-sixth stator coil; 227-twenty-seventh stator coil; 228-twenty-eighth stator coil; 229-a twenty-ninth stator coil; 230-thirtieth stator coil; 231-a thirty-first stator coil; 232-thirty second stator coil; 31-a first permanent magnet; 32-a second permanent magnet; 33-a third permanent magnet; 34-fourth permanent magnet.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model relates to a motor, its main thought that relates to lies in: the magnetic conduction part is used as an iron core of the stator coil and rotates along with the movement part, a magnetic field generated in the magnetic conduction part by the stator coil and the permanent magnet generate magnetic field force, and the magnetic field repelled by the permanent magnet passes through part of the stator coil to generate ampere force. The motor has the advantages that the moving part moves partially through the magnetic field force of the electrified coil, the moving part moves partially through the ampere force, the torque angle is constant to zero, and finally the purpose of improving the performance and the efficiency of the motor is achieved.

Based on the above design concept, the following embodiments describe some specific applications under the design concept in detail.

Example 1

The present embodiment relates to an electric motor, one exemplary structure of which is shown in fig. 1. As can be seen from fig. 1, the motor mainly includes two permanent magnets, two magnetic conductive parts 4 and stator coils, but is not limited thereto, and a plurality of permanent magnets, magnetic conductive parts 4 and stator coils may be selected to maintain the stability of the motor when applied to the motor, and to be better applicable to different fields.

The rotor is a moving part in this embodiment, and mainly includes a permanent magnet 31, a permanent magnet 32, and two magnetic conductive parts 4 (equivalent to a stator core), specifically, the permanent magnet and the magnetic conductive parts 4 are arranged at intervals, uniformly distributed, and combined in a circular ring shape; the magnetic conduction part 4 is fixedly connected with the permanent magnet; the two permanent magnets are axially magnetized, and when the two permanent magnets are connected with the magnetic conduction part, the N poles are opposite, and the S poles are also opposite; meanwhile, the magnetic conductive part 4 is made of a ferromagnetic material.

In the embodiment, the magnetic conduction part 4 with the magnetic conductivity far greater than that of air is adopted, so that the magnetic resistance of the main magnetic flux magnetic circuit in the motor structure is reduced, the magnetic density (namely the magnetic induction intensity) is enhanced, and the performance and the efficiency of the motor are improved. The magnetic conductive part 4 of the present embodiment can be made of any ferromagnetic material with good performance.

In order to further improve the performance of the motor, in a specific embodiment of the present invention, the magnetic conductive portion 4 is made of a ferromagnetic material, and the ferromagnetic material may be one or more of a soft magnetic material and a hard magnetic material. The soft magnetic material can be selected from one or more of cast iron, cast steel, soft magnetic ferrite and silicon steel sheets. The hard magnetic material may be selected from one or more of cast alnico, powdered alnico, ferrite, rare earth cobalt, and neodymium iron boron. Preferably, the magnetic conductive part 4 is made of soft magnetic material.

In order to further improve the performance of the motor, in another embodiment of the present invention, the magnetic conductive part 4 is made of a silicon iron alloy containing 0.5 to 4.8% of silicon. Preferably, in order to reduce eddy current loss, the magnetic conductive part 4 is formed by overlapping silicon steel sheets.

In order to further improve the performance of the motor, in an embodiment of the present invention, the cross section of the permanent magnet and the magnetic conductive portion 4 is set to be circular. Therefore, when the motor is applied, the magnetic field intensity formed by the stator coil of the spiral structure in the annular magnetic conduction part is further increased, and the performance and the efficiency of the motor are improved.

The stator coil is tightly wound and sleeved outside the rotor except for the supporting bearing and the gear, and the stator coil can be fixed inside the motor shell, but the stator coil fixing device is not limited to the motor shell as long as the stator coil fixing device can fix the electronic coil. It is noted that the stator coil winding of the present invention is different from the conventional motor.

The traditional motor stator is provided with a tooth slot, a stator coil is fixed in the tooth slot, the tooth is equivalent to an iron core of the stator coil, and after the stator coil is electrified, a magnetic field is generated. In a synchronous machine, the tangential component of the magnetic field force between the stator field and the rotor field drags the rotor into rotation. And the stator teeth and slots can generate harmonic magnetic fields and torque pulsation. In this embodiment, the stator has a tooth-slot-free structure, and the stator coil is tightly wound and uniformly fixed inside the electrode shell. The magnetic conduction part on the motion part is equivalent to an iron core of the stator coil, the stator coil generates a magnetic field in the magnetic conduction part, the magnetic field force between the stator magnetic field and the permanent magnet magnetic field is totally acted on the tangential direction, a repulsive magnetic field is generated between the permanent magnets, and the ampere force is generated by passing through part of the stator coil and also acted on the tangential direction.

The stator coils of the present embodiment are divided into 12 groups, but the present invention is not limited thereto, and the specific grouping number of the stator coils can be adjusted according to the performance requirement of the motor, and the stator coils are divided into different number groups. Wherein, the shell is made of magnetic conductive material. The rotor fixing device of the present embodiment may be selected from the bearing 1, but is not limited thereto as long as it can fix the rotor. A bearing 1 is arranged between the rotor and the stator coil, and the bearing 1 is sleeved outside the rotor and plays a role in fixing the rotor, so that the rotor can freely rotate in the bearing; preferably, the number of the bearings 1 is 3.

As shown in fig. 1, in the illustrated position, the fourth stator coil 204, the fifth stator coil 205, the sixth stator coil 206, the tenth stator coil 210, the eleventh stator coil 211, and the twelfth stator coil 212 are energized at this time; the seventh stator coil 207, the eighth stator coil 208, the ninth stator coil 209, the first stator coil 201, the second stator coil 202, and the third stator coil 203 are de-energized at this time.

First, the magnetic fields generated by the three stator coils of the fourth stator coil 204, the fifth stator coil 205, and the sixth stator coil 206 are aligned in direction, that is, the magnetic field generated in the magnetic permeable section 4 is attracted to the second permanent magnet 32 and repelled from the first permanent magnet 31, so that the rotor receives a magnetic field force rotating counterclockwise. Due to the interaction of the energized coils and the permanent magnet magnetic field, the magnetic field repelling each other between the first permanent magnet 31 and the second permanent magnet 32 will pass through the sixth stator coil 206, also generating an ampere force that rotates the rotor counterclockwise. And all the forces applied to the rotor act on the tangential direction, and the torque angle is constant to zero. The tenth stator coil 210, the eleventh stator coil 211, and the twelfth stator coil 212 are similarly wound.

As the rotor rotates counterclockwise, when the rotor rotates past one stator coil position, the fourth stator coil 204 is de-energized and the seventh stator coil 207 is energized, and at the same time, the tenth stator coil 210 is de-energized and the first stator coil 201 is energized. At this time, the fifth stator coil 205, the sixth stator coil 206 and the seventh stator coil 207 of the three adjacent stator coils are in the same magnetic field direction, and the rotor is also rotated counterclockwise, similarly to the eleventh stator coil 211, the twelfth stator coil 212 and the first stator coil 201; by parity of reasoning, the stator coil is sequentially electrified and deenergized in the counterclockwise direction, and the rotor rotates counterclockwise. In the same way, the rotor can also rotate clockwise.

Secondly, the motor of the present embodiment has no stator slot structure of the conventional motor, the magnetic conductive part 4 in the motor is equivalent to the iron core of the stator coil of the conventional motor, and the housing thereof is a part of the magnetic circuit. Compared with the traditional motor, the motor of the embodiment has no transverse edge effect, high utilization rate of the primary winding (no end winding of the stator) and the like, and has no stator tooth slot of the traditional motor, so that harmonic waves and pulse vibration generated by the harmonic waves and the pulse vibration are avoided. Therefore, the interaction force of the stator coil and the rotor in the embodiment is all acted in the tangential direction, the torque angle is constant to zero, namely the attraction force generated by the motor is all in the tangential direction, and all the action force enables the rotor to rotate so as to convert the electric energy into the mechanical energy. The technical problem that only the tangential component of the attraction force generated by the stator coil and the rotor in the traditional motor is the rotating force is solved. And the magnetic density (namely, magnetic induction intensity) generated in the rotor by the spiral stator coil is large, so that the performance and the efficiency of the motor are improved.

In order to further improve the efficiency of the motor, the utility model discloses an in one embodiment, still include drive mechanism for drive exterior structure and carry out mechanical motion. The transmission mechanism can be any one selected from a gear transmission mechanism, a chain transmission mechanism, a belt transmission mechanism, a worm and gear transmission mechanism and a cam mechanism, as long as the transmission mechanism can drive an external structure to perform mechanical motion and convert electric energy into mechanical energy.

In order to further improve the transmission efficiency of the motor, in one embodiment of the present invention, the transmission mechanism includes a gear 2 and teeth 3 (see fig. 1). Specifically, the outer surface of the rotor is provided with a plurality of teeth 3 along the circumferential direction, and the teeth 3 are arranged at intervals along the axial direction of the rotor; and the gear 2 is fixedly connected to the outer side of the rotor, and a plurality of teeth are arranged on the outer surface of the gear along the circumferential direction and are arranged at intervals along the axial direction of the gear 2. The teeth on gear 2 cooperate with teeth 3. When the motor is electrified, the rotor rotates, the gear 2 and the teeth 3 which are matched with each other drive the external structure to perform mechanical motion, and the electric energy is converted into mechanical energy, so that the transmission is convenient and efficient.

Example 2

The present embodiment relates to a motor, one exemplary structure of which is shown in fig. 2. The structure of the motor of the present embodiment is similar to that of embodiment 1, except that: the moving part of the present embodiment is a mover, which is composed of two permanent magnets and two magnetic conductive parts 4, and the combination of the two permanent magnets and the two magnetic conductive parts 4 is a linear type.

The stator coils are tightly wound and sleeved outside the rotor, and can be fixed on the inner side of the shell and divided into 12 groups. Wherein, the shell is made of magnetic conductive material. Specifically, as shown in fig. 2, in the illustrated position, the twenty-first stator coil 221, the twenty-second stator coil 222, the twenty-third stator coil 223, the twenty-seventh stator coil 227, the twenty-eighth stator coil 228, and the twenty-ninth stator coil 229 are powered at this time; the twenty-fourth stator coil 224, the twenty-fifth stator coil 225, the twenty-sixth stator coil 226, the thirty-fourth stator coil 230, the thirty-first stator coil 231, and the thirty-second stator coil 232 are now de-energized.

First, the directions of the magnetic fields generated by the twenty-seventh stator coil 227, the twenty-eighth stator coil 228, and the twenty-ninth stator coil 229 are the same, that is, the magnetic field generated in the magnetically permeable section 4 attracts the fourth permanent magnet 34 and repels the third permanent magnet 33, so that the mover receives a magnetic force moving leftward. Due to the interaction of the energized coils with the permanent magnet field, the magnetic field repelling each other between the third permanent magnet 33 and the fourth permanent magnet 34 will pass through the twenty-sixth stator coil 226, also generating an ampere force that moves the mover to the left. And the forces experienced by the rotor all act in the horizontal direction. The twenty-first stator coil 221, the twenty-second stator coil 222, and the twenty-third stator coil 223 are the same.

As the mover moves leftward, when the mover moves one stator coil position, the twenty-third stator coil 223 loses power and the twenty-sixth stator coil 226 gets power; the twenty-ninth stator coil 229 is de-energized, and the twenty-sixth, twenty-seventh and twenty-eighth stator coils 226, 227 and 228 of adjacent energized coils are energized, with the same magnetic field direction, so that the mover moves leftward; by analogy, the stator coil is sequentially powered on and powered off leftwards, and the rotor moves leftwards. Similarly, the mover can move rightward.

Next, the motor of the present embodiment has no stator slot structure of the conventional motor, the magnetic conductive part 4 in the motor is equivalent to the iron core of the stator coil of the conventional motor, and the housing thereof is a part of the magnetic circuit. Compared with the traditional linear motor, the linear motor of the embodiment has no tooth groove positioning force and side end positioning force.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric motor characterized by: the motor comprises

The motion part comprises more than one permanent magnet which is magnetized in the axial direction and more than one magnetic conduction part (4); the permanent magnets are uniformly distributed and are opposite to the same magnetic poles; the magnetic conduction part (4) is respectively arranged in a gap between the adjacent permanent magnets; the magnetic conduction part (4) is fixedly connected with the permanent magnet, and the motion part is arranged in the motion part fixing device; the magnetic conduction part (4) is made of soft magnetic materials; and

2. The motor of claim 1, wherein: the cross sections of the permanent magnet and the magnetic conduction part (4) are circular.

3. The motor according to any one of claims 1 or 2, wherein: the combination of more than one permanent magnet and more than one magnetic conduction part (4) is in a circular ring shape.

4. The motor of claim 3, wherein: the motor further comprises a transmission mechanism.

5. The motor of claim 4, wherein: the transmission mechanism comprises

A gear (2) provided outside the moving part; and

teeth (3) provided on an outer surface of the moving part;

the gear (2) is matched with the teeth (3).

6. The motor according to any one of claims 1 or 2, wherein: the combination of more than one permanent magnet and more than one magnetic conduction part (4) is linear.