CN113027765A

CN113027765A - Torque compensation assembly, electric assembly and electric equipment

Info

Publication number: CN113027765A
Application number: CN202110403606.XA
Authority: CN
Inventors: 甘磊; 李文瑞; 吴迪; 程云峰
Original assignee: Midea Welling Motor Technology Shanghai Co Ltd
Current assignee: Midea Welling Motor Technology Shanghai Co Ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-06-25

Abstract

The invention provides a torque compensation assembly, an electric assembly and electric equipment. The torque compensation subassembly is used for electronic subassembly, and electronic subassembly includes support piece and pivot, and the torque compensation subassembly includes: the first magnetic assembly comprises a first iron core and a first compensation part, the first iron core is connected with the support, and the first compensation part is annularly arranged along the circumferential direction of the first iron core; the second magnetic assembly comprises a second iron core and a second compensation part, the second iron core is connected with the rotating shaft, and the second compensation part is annularly arranged along the circumferential direction of the second iron core; wherein the first compensation component and the second compensation component generate mechanical action through a magnetic field. According to the torque compensation assembly provided by the invention, the compensation torque is generated through the interaction of the static magnetic field generated by the first compensation component and the rotating magnetic field generated by the second compensation component, so that the torque compensation can be realized through the structure of the electric assembly.

Description

Torque compensation assembly, electric assembly and electric equipment

Technical Field

The invention relates to the field of compressors, in particular to a torque compensation assembly, an electric assembly and electric equipment.

Background

Currently, in the related art, the gas resistance torque of the compressor varies periodically during the compression of the gas, resulting in periodic fluctuations of the load torque of the compressor. However, the output torque of the compressor driving motor is a constant value, so that the torque imbalance of the compressor occurs, and the rotation speed of the compressor fluctuates.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention proposes a torque compensation assembly.

A second aspect of the invention provides a motorized assembly.

A third aspect of the invention proposes an electrical appliance.

In view of the above, a first aspect of the present invention provides a torque compensation assembly for an electromotive assembly including a support and a rotation shaft, the torque compensation assembly comprising: the first magnetic assembly comprises a first iron core and a first compensation part, the first iron core is connected with the support, and the first compensation part is annularly arranged along the circumferential direction of the first iron core; the second magnetic assembly comprises a second iron core and a second compensation part, the second iron core is connected with the rotating shaft, and the second compensation part is annularly arranged along the circumferential direction of the second iron core; wherein the first compensation part and the second compensation part generate compensation torque through the action of a magnetic field.

In this technical scheme, there is the air gap interval between first magnetic component and the second magnetic component, and first magnetic component is connected with electronic subassembly's support piece, and second magnetic component is connected with electronic subassembly's pivot, and then realizes that electronic subassembly during operation, and electronic subassembly drives the piston rotation and compresses gas, and second magnetic component also synchronous revolution to take place relative rotary motion with first magnetic component, realize first magnetic component and second magnetic component's installation and fixed. When the electric component works, the static magnetic field generated by the first compensation part and the rotating magnetic field generated by the second compensation part interact to generate compensation torque, and then the compensation of the torque can be realized through the structure of the electric component, so that the output torque of the electric component can change along with the gas compression process of the electric component, the condition that the torque of the electric component is unbalanced is avoided, the fluctuation of the rotating speed of the compressor is reduced, and therefore the vibration and the noise are reduced.

And, the single cylinder compressor has simple structure and low cost's advantage, can wide application in refrigeration plant such as air conditioner and refrigerator, especially when being the single cylinder compressor to the electronic subassembly, because single cylinder compressor load torque fluctuation is big, if not carrying out torque compensation will appear obvious rotational speed fluctuation problem, produce vibration and noise and reduce the reliability, seriously influence the low frequency performance of compressor, this application compensates the torque of compressor through the torque compensation subassembly, and then the reduction rotational speed that can be better is undulant, and reduce vibration and noise, improve the low frequency performance of single cylinder compressor.

And compared with the conventional compensation torque generated by regulating the motor current through electric control, the compensation current is not required to be additionally introduced, the efficiency of the electric drive system is not reduced, and the required torque compensation can be met.

The first magnetic assembly contains a first compensation component, the number of pole pairs of the first compensation component in the first magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The second magnetic assembly contains a second compensation component, the number of pole pairs of the second compensation component in the second magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The magnetic fields generated by the first magnetic assembly and the second magnetic assembly interact to form a compensation torque. The fundamental cycle number of the compensation torque is 1 for each revolution of the electrical component.

Specifically, the first magnetic assembly forms a stationary magnetic field distribution in the air gap, and the second magnetic assembly forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic assembly. When the electric component operates, the static magnetic field distribution generated in the first magnetic component and the rotating magnetic field distribution generated by the second magnetic component interact, the number of pole pairs of the static magnetic field distribution and the rotating magnetic field distribution is 1, and the condition that the number of pole pairs of the magnetic fields is equal is met, so that a torque effect is formed. Because the static magnetic field distribution and the rotating magnetic field distribution move relatively, the generated torque is not a constant value, but is an alternating torque with periodically changing direction and magnitude, and the alternating period is equal to the mechanical period of the operation of the electric component divided by the number of pole pairs of the magnetic field. Thus, the number of cycles of the compensating torque is 1 per revolution of the electrical component.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are radial, and the magnetic flux paths are closed in a plane orthogonal to the rotating shaft, similar to the magnetic flux direction of the air gap magnetic field of the permanent magnet motor with the conventional radial magnetic flux structure.

The arrangement modes of the first magnetic assembly and the second magnetic assembly are flexible and various, and only the number of the pole pairs of the fundamental wave of the magnetic field distribution generated in the air gap is 1. The arrangement of the first magnetic assembly and the second magnetic assembly includes, but is not limited to, a coreless structure, a Halbach (Halbach) array structure, a surface-mounted structure in which the first compensation part and the second compensation part are mounted on the surface of the core, and a built-in structure in which the first compensation part and the second compensation part are mounted in the slot of the core, that is, the arrangement of the permanent magnet of the conventional permanent magnet motor can be conveniently transplanted.

In one embodiment of the present invention, the first magnetic assembly is sleeved outside the second magnetic assembly.

In the technical scheme, the first magnetic assembly is sleeved on the outer portion of the second magnetic assembly, so that the structure is not arranged on the stator assembly and the rotor assembly of the electric assembly, the function of the electric assembly cannot be affected, and the compensation torque can be generated when the electric assembly runs.

In one technical scheme of the invention, the first iron core is annular, and the first compensation component is arranged along the inner wall of the first iron core; the second compensation part is arranged along the outer wall of the second iron core; the first compensation part and the second compensation part have a gap therebetween.

In the technical scheme, the first iron core is annular, so that the first contact can also be sleeved outside the second compensation component, the first compensation component is arranged on the inner wall of the first iron core, the second compensation component is arranged on the outer wall of the second iron core, the first compensation component and the second compensation component are mounted and fixed, a gap is formed between the first compensation component and the second compensation component, the first compensation component can form static magnetic field distribution in the air gap, and the second compensation component forms rotating magnetic field distribution in the air gap.

Specifically, the first magnetic assembly and the second magnetic assembly both comprise 2 tile-shaped magnetic poles, and N, S two polarities are realized by adopting opposite magnetizing directions. The magnetizing mode is radial radiation type magnetizing or radial parallel magnetizing, and the like, and the magnetizing mode refers to the permanent magnet magnetizing mode of a common surface-mounted permanent magnet motor.

Optionally, the first and second magnetic assemblies are assembled by a plurality of first and second compensation parts split in a circumferential direction, thereby reducing the size of the single first and second compensation parts. Based on this first and second compensation component tile combination scheme, each individual first and second compensation component allows for design into different sizes to meet the requirements of magnetic field harmonic configuration.

In one aspect of the present invention, the first magnetic assembly and the second magnetic assembly are disposed along an axial direction of the rotating shaft.

In this technical scheme, first magnetic component and second magnetic component can also be along the axial setting of electronic subassembly pivot, and then make first magnetic component and second magnetic component can produce static magnetic field and rotating magnetic field in the axial.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are both axial, and the magnetic flux paths are closed in a curved surface parallel to the rotating shaft.

In one aspect of the present invention, the first iron core is disk-shaped or ring-shaped, and the first compensation member is disposed on at least one side of the first iron core in the axial direction; the second iron core is disc-shaped or annular, and the second compensation part is arranged on at least one side of the second iron core in the axial direction and is opposite to the first compensation part; a gap between the first compensation member and the second compensation member.

In this embodiment, the first compensation member is provided on at least one side of the first core in the axial direction, the second compensation member is provided on at least one side of the second core in the axial direction, the second compensation member is provided so as to face the first compensation member, and a gap is provided between the first compensation member and the second compensation member.

Specifically, when the second compensation part is disposed between two first compensation parts, the second compensation parts are disposed on both sides of the second core, and the first compensation parts are disposed on one side of the first core.

Specifically, when the first compensation part is disposed between two second compensation parts, the first compensation part is disposed on both sides of the first core, and the second compensation part is disposed on one side of the second core.

In one technical scheme of the invention, the number of the second compensation parts is multiple, and the second compensation parts are respectively arranged at two sides of the second iron core in the axial direction; the number of the first magnetic assemblies is two, and the first magnetic assemblies are respectively arranged on two sides of the second magnetic assembly in the axial direction.

In this technical scheme, two sets of first magnetic assemblies are arranged on both sides of the second magnetic assembly in the axial direction, and the second compensation assemblies can be multiple and arranged on both sides of the second iron core in the axial direction, so that multiple second compensation parts can be arranged between the two sets of first magnetic assemblies to form an axial composite structure, and further a new second air gap is formed between the first magnetic assemblies and the second magnetic assemblies, the number of pole pairs of the first magnetic assemblies newly added with the axial composite section is 1, the first magnetic assemblies are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves of 1 is formed in the second air gap. The other side of the second magnetic component has a pole pair number of 1 and is alternately arranged according to N, S polarities, and an air gap magnetic field distribution with the same fundamental pole pair number of 1 is formed in the second air gap.

Specifically, the number of the second compensation parts is one, and the second compensation parts are respectively arranged on two sides of the second iron core in the axial direction; the number of the first magnetic assemblies is two, and the first magnetic assemblies are respectively arranged on two sides of the second magnetic assembly in the axial direction.

Specifically, the number of the second compensation parts is two, and the two second compensation parts are respectively arranged on two sides of the second iron core in the axial direction; the number of the first magnetic assemblies is two, and the first magnetic assemblies are respectively arranged on two sides of the second magnetic assembly in the axial direction.

In one technical scheme of the invention, the number of the first compensation parts is multiple, and the first compensation parts are respectively arranged at two sides of the first iron core in the axial direction; the number of the second magnetic assemblies is two, and the second magnetic assemblies are respectively arranged on two sides of the first magnetic assembly in the axial direction.

In this technical solution, the number of the second magnetic assemblies is two, the second magnetic assemblies are disposed on two sides of the first magnetic assembly in the axial direction, the number of the first compensation components may be multiple, the first compensation components are respectively disposed on two sides of the first iron core in the axial direction, the axial composite structure may also be formed, and then a new second air gap is formed between the first magnetic assembly and the second magnetic assembly, so that the number of pole pairs of the first magnetic assembly to which the axial composite section is newly added is 1, the pole pairs are alternately arranged according to N, S polarities, and an air gap magnetic field distribution in which the number of pole pairs of the fundamental wave is also 1 is formed in the second air gap. The other side of the second magnetic component has a pole pair number of 1 and is alternately arranged according to N, S polarities, and an air gap magnetic field distribution with the same fundamental pole pair number of 1 is formed in the second air gap.

Specifically, the number of the first compensation parts is one, and the first compensation parts are respectively arranged on two sides of the first iron core in the axial direction; the number of the second magnetic assemblies is two, and the second magnetic assemblies are respectively arranged on two sides of the first magnetic assembly in the axial direction.

Specifically, the number of the first compensation parts is two, and the two first compensation parts are respectively arranged on two sides of the first iron core in the axial direction; the number of the second magnetic assemblies is two, and the second magnetic assemblies are respectively arranged on two sides of the first magnetic assembly in the axial direction.

In one technical scheme of the invention, the first compensation component comprises at least two groups of first magnetic components, and the at least two groups of magnetic components are arranged at intervals along the circumferential direction of the first iron core; the second compensation component comprises at least two groups of second magnetic components which are arranged at intervals along the circumferential direction of the second iron core.

In the technical scheme, the first compensation part is composed of at least two groups of first magnetic parts and is arranged at intervals along the circumferential direction of the first iron core, similarly, the second compensation part is composed of at least two groups of second magnetic parts and is arranged at intervals along the circumferential direction of the second iron core, and the arrangement mode can be realized in such a way that in the working process of the electric assembly, at least two groups of first compensation parts and two groups of second compensation components are arranged, so that in the processes of sucking gas and exhausting gas of the electric assembly, a static magnetic field generated by the first compensation part and a rotating magnetic field generated by the second compensation part interact to generate compensation torque, and further the torque of the electric assembly can be compensated.

Specifically, the magnetic directions of the two groups of first magnetic components are opposite, the magnetic directions of the two groups of first magnetic components are clockwise directions, that is, the group of first magnetic components are magnetized according to the clockwise direction, and the magnetic direction of the other group of first magnetic components is counterclockwise directions, that is, the group of first magnetic components are magnetized according to the counterclockwise direction.

Specifically, the second compensation component includes two groups of second magnetic components, the magnetic directions of the two groups of second magnetic components are opposite, the magnetization direction of one group of second magnetic components in the two groups of second magnetic components is from the axis of the rotor core to the outer wall of the second core, and the magnetization direction of the other group of second magnetic components in the two groups of second magnetic components is from the outer wall of the second core to the axis of the rotor core.

In one aspect of the present invention, each of the at least two sets of first magnetic members includes at least one first magnetic member; and/or each of the at least two sets of second magnetic components comprises at least one second magnetic component.

In this solution, each of the at least two sets of first magnetic components includes at least one first magnetic component; each set of second magnetic parts in at least two sets of second magnetic parts includes at least one second magnetic part, makes in the electric component work in-process, through changing the quantity of first magnetic part and the quantity of second magnetic part, and then can change the size of compensation torque.

Specifically, each of the at least two groups of first magnetic components includes two first magnetic components; each of the at least two groups of second magnetic parts comprises two second magnetic parts, so that the pole pair number is 1 in the first compensation assembly and the second compensation assembly respectively, the pole pairs are arranged alternately according to N, S, and air gap magnetic field distribution with the same fundamental pole pair number as 1 is formed in the second air gap.

Specifically, each of the at least two groups of first magnetic components includes three first magnetic components; each of the at least two groups of second magnetic parts comprises three second magnetic parts, so that the pole pair number is 1 in the first compensation assembly and the second compensation assembly respectively, the pole pairs are arranged alternately according to N, S, and air gap magnetic field distribution with the same fundamental pole pair number as 1 is formed in the second air gap.

In one aspect of the present invention, the gap between the first compensation member and the second compensation member decreases from one end to the other end and then increases.

In the technical scheme, the gap between the first compensation component and the second compensation component is arranged to be reduced from one end to the other end and then increased, so that the gap between the first compensation component and the second compensation component is not uniform any more, and the waveform of the compensation torque is optimized.

Specifically, the thickness of the second compensation part is uniform, the thickness of the first compensation part is smaller than the thickness of the middle of the first compensation part at two ends, and a gap is ensured between the first compensation part and the second compensation part, so that the gap between the first compensation part and the second compensation part is firstly reduced from one end to the other end and then is increased.

Specifically, the thickness of the first compensation part is uniform, the thickness of the second compensation part is smaller than the thickness of the middle of the second compensation part at two ends, and a gap is ensured between the first compensation part and the second compensation part, so that the gap between the first compensation part and the second compensation part is firstly reduced from one end to the other end and then is increased.

In one technical scheme of the invention, the axial length of the first magnetic assembly is not equal to the axial length of the second magnetic assembly; and/or the diameter of the first magnetic component is not equal to the diameter of the second magnetic component.

In the technical scheme, the axial length of the first magnetic assembly is not equal to the axial length of the second magnetic assembly; the diameter of the first magnetic assembly is not equal to that of the second magnetic assembly, so that the first magnetic assembly and the second magnetic assembly can stably generate compensation torque when the electric assembly operates.

In one technical scheme of the invention, the first magnetic assembly further comprises a through hole which is arranged on the first iron core and penetrates through the first iron core along the axial direction of the first iron core; and/or the second magnetic assembly also comprises a through hole which is arranged on the second iron core and penetrates through the second iron core along the axial direction of the second iron core.

In the technical scheme, the first iron core of the first magnetic assembly is provided with the through hole and penetrates through the first iron core in the axial direction, and the second iron core of the second magnetic assembly is provided with the through hole and penetrates through the second iron core in the axial direction, so that the electric assembly can compress the sucked gas and then discharge the compressed gas through the through hole in the first iron core.

Specifically, when there are a plurality of sets of first compensation members in the first magnetic assembly, there are through holes in each first core, and when there are a plurality of sets of second compensation members in the second magnetic assembly, there are through holes in each second core.

According to a second aspect of the present invention, there is provided an electric assembly comprising the above-mentioned torque compensation assembly, thereby providing all the advantages of any of the above-mentioned aspects.

In the technical scheme, an air gap interval exists between a first magnetic assembly and a second magnetic assembly, the first magnetic assembly is connected with a support of an electric assembly, the second magnetic assembly is connected with a rotating shaft of the electric assembly, so that when the electric assembly works, the electric assembly drives a piston to rotate and compress air, the second magnetic assembly synchronously rotates and generates relative rotation motion with the first magnetic assembly, the first magnetic assembly and the second magnetic assembly are installed and fixed, when the electric assembly works, a static magnetic field generated by a first compensation part and a rotating magnetic field generated by a second compensation part interact to generate compensation torque, and further the torque compensation can be realized through the structure of the electric assembly, so that the output torque of the electric assembly can change along with the air compression process of the electric assembly, and the condition that the torque of the electric assembly is unbalanced is avoided, the rotating speed fluctuation of the compressor is reduced, so that the vibration and the noise are reduced, and particularly when the compressor works at a low frequency and a low speed, the rotating speed fluctuation of the compressor can be better reduced, the vibration and the noise are reduced, and the low-frequency performance of the compressor is further improved.

The first magnetic assembly contains a first compensation component, the number of pole pairs of the first compensation component in the first magnetic assembly is 1 (the number of pole pairs is 2), the first compensation component is alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The second magnetic assembly contains a second compensation component, the number of pole pairs of the second compensation component in the second magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The magnetic fields generated by the first magnetic assembly and the second magnetic assembly interact to form a compensation torque. The fundamental cycle number of the compensation torque is 1 per one rotation of the compressor.

Specifically, the first magnetic assembly forms a stationary magnetic field distribution in the air gap, and the second magnetic assembly forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic assembly. When the compressor runs, the static magnetic field distribution generated by the first magnetic assembly and the rotating magnetic field distribution generated by the second magnetic assembly interact, the number of pole pairs of the static magnetic field distribution and the rotating magnetic field distribution is 1, the condition that the number of pole pairs of the magnetic fields is equal is met, and therefore a torque effect is formed. Because the static magnetic field distribution and the rotating magnetic field distribution move relatively, the generated torque is not a constant value, but is an alternating torque with periodically changing direction and magnitude, and the alternating period is equal to the mechanical period of the operation of the electric component divided by the number of pole pairs of the magnetic field. Thus, the number of cycles of the compensating torque is 1 per revolution of the electrical component.

Specifically, the first magnetic assembly and the second magnetic assembly can also be arranged along the axial direction of the rotating shaft of the electric assembly, so that the first magnetic assembly and the second magnetic assembly can generate a static magnetic field and a rotating magnetic field in the axial direction.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are both axial, and similar to the magnetic flux direction of the air gap magnetic field of a permanent magnet motor (disc motor) with a conventional axial magnetic flux structure, the magnetic flux paths are closed in a curved surface parallel to the rotating shaft.

In addition, the electric assembly in the above technical solution provided by the present invention may further have the following additional technical features:

in one aspect of the present invention, the supporting member is a housing, and the electric component further includes: the stator is arranged in the shell and is connected with the shell; the rotor is inserted in the stator, and the rotating shaft is inserted in the rotor; the cylinder, the cylinder includes cylinder body and piston, and the cylinder body is connected with the casing, and the piston is connected with the pivot.

In the technical scheme, a stator is arranged in a shell and connected with the shell, a rotor is inserted in the stator, and a rotating shaft is inserted in the rotor; the cylinder comprises a cylinder body and a piston, the cylinder body is connected with the shell, the piston is connected with the rotating shaft, the stator, the rotor and the rotating shaft are installed and fixed, when the electric assembly operates, the stator and the rotor generate torque according to the principle of the permanent magnet synchronous motor, and therefore initial power can be provided for the compressor cylinder to drive the piston to rotate and compress gas.

According to a third aspect of the present invention, there is provided an electrical apparatus comprising the above-mentioned motorized assembly, wherein the electrical apparatus has all the advantages of any one of the above-mentioned aspects.

In the technical scheme, an air gap interval exists between a first magnetic assembly and a second magnetic assembly, the first magnetic assembly is connected with a support of an electric assembly, the second magnetic assembly is connected with a rotating shaft of the electric assembly, so that when the electric assembly works, the electric assembly drives a piston to rotate and compress air, the second magnetic assembly synchronously rotates and generates relative rotation motion with the first magnetic assembly, the first magnetic assembly and the second magnetic assembly are installed and fixed, when the electric assembly works, a static magnetic field generated by a first compensation part and a rotating magnetic field generated by a second compensation part interact to generate compensation torque, and further the torque compensation can be realized through the structure of the electric assembly, so that the output torque of the electric assembly can change along with the air compression process of the electric assembly, and the condition that the torque of the electric assembly is unbalanced is avoided, the rotating speed fluctuation of the electric component is reduced, so that vibration and noise are reduced, especially when the electric component works at low frequency and low speed, the rotating speed fluctuation of the electric component can be better reduced, the vibration and noise are reduced, and the low-frequency performance of the electric component is improved.

The first magnetic assembly contains a first compensation component, the number of pole pairs of the first compensation component in the first magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The second magnetic assembly contains a second compensation component, the number of pole pairs of the second compensation component in the second magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of the fundamental wave as 1 is formed in an air gap. The magnetic fields generated by the first magnetic assembly and the second magnetic assembly interact to form a compensation torque. The fundamental cycle number of the compensation torque is 1 for each revolution of the electrical component.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates one of the schematic diagrams of a torque compensation assembly and an electric assembly according to one embodiment of the present invention;

FIG. 2 illustrates one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 3 illustrates one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 4 illustrates one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 5 illustrates a schematic diagram of the relationship between compensation torque and magnetic field according to one embodiment of the present invention;

FIG. 6 illustrates one of the schematic diagrams of the torque compensation assembly according to one embodiment of the present invention;

FIG. 7 illustrates one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 8 illustrates one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 9 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 10 shows one of the schematic diagrams of an electrical device according to one embodiment of the present invention;

FIG. 11 illustrates one of the schematic diagrams of the torque compensation assembly and the electric assembly according to one embodiment of the present invention;

FIG. 12 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the invention;

FIG. 13 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 14 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the invention;

FIG. 15 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the invention;

FIG. 16 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention;

FIG. 17 shows one of the schematic diagrams of a torque compensation assembly according to one embodiment of the invention;

FIG. 18 shows one of the schematic electrical apparatus diagrams according to one embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 18 is:

100 torque compensation assembly, 110 first magnetic assembly, 112 first iron core, 114 first compensation part, 120 second magnetic assembly, 122 second iron core, 124 second compensation part, 200 electric assembly, 202 rotating shaft, 204 shell, 206 stator, 208 rotor, 210 cylinder.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Torque compensation assemblies, electrical assemblies, and electrical devices according to some embodiments of the present invention are described below with reference to fig. 1-18.

The first embodiment is as follows:

the invention provides a torque compensation assembly 100, the torque compensation assembly 100 is used for an electric assembly 200, the electric assembly 200 comprises a support and a rotating shaft 202, the torque compensation assembly 100 comprises: the first magnetic assembly 110, the first magnetic assembly 110 includes a first iron core 112 and a first compensation component 114, the first iron core 112 is connected with the support, the first compensation component 114 is annularly arranged along the circumference of the first iron core 112; the second magnetic assembly 120, the second magnetic assembly 120 includes a second core 122 and a second compensating component 124, the second core 122 is connected with the rotating shaft 202, and the second compensating component 124 is annularly arranged along the circumferential direction of the second core 122; wherein the first compensation component 114 and the second compensation component 124 generate the compensation torque through the action of the magnetic field.

As shown in fig. 1, 2 and 5, in this embodiment, an air gap is formed between the first magnetic assembly 110 and the second magnetic assembly 120, the first magnetic assembly 110 is connected to a support of the electric assembly 200, the second magnetic assembly 120 is connected to a rotating shaft 202 of the electric assembly 200, so that when the electric assembly 200 works, the electric assembly drives the piston to rotate and compress air, the second magnetic assembly also rotates synchronously and rotates relatively to the first magnetic assembly, so as to mount and fix the first magnetic assembly 110 and the second magnetic assembly 120, when the electric assembly 200 works, a static magnetic field generated by the first compensation component 114 interacts with a rotating magnetic field generated by the second compensation component 124 to generate a compensation torque, so that the torque compensation can be realized by the structure of the electric assembly 200 itself, so that the output torque of the electric assembly 200 can change along with the process of compressing air by the electric assembly 200, the condition that torque imbalance occurs in the electric component 200 is avoided, and the rotating speed fluctuation of the electric component 200 is reduced, so that vibration and noise are reduced, and particularly when the electric component 200 works at a low frequency and a low speed, the rotating speed fluctuation of the electric component 200 can be better reduced, the vibration and the noise are reduced, and further the low-frequency performance of the electric component 200 is improved.

And, the single cylinder electric component 200 has the advantages of simple structure and low cost, can be widely applied to refrigeration equipment such as air conditioners and refrigerators, especially when the electric component 200 is a single cylinder compressor, because the single cylinder compressor has large load torque fluctuation, if obvious rotational speed fluctuation problem will appear without torque compensation, vibration and noise are generated and reliability is reduced, the low frequency performance of the single cylinder compressor is seriously influenced, the torque of the compressor is compensated through the torque compensation component 100 in the application, and then the rotational speed fluctuation can be better reduced, and vibration and noise are reduced, and the low frequency performance of the single cylinder compressor is improved.

The first magnetic assembly 110 contains a first compensation member, the number of pole pairs of the first compensation member in the first magnetic assembly 110 is 1 (the number of pole pairs is 2), the first compensation member is alternately arranged according to N, S polarities, and an air gap magnetic field distribution with the same number of pole pairs of the fundamental wave as 1 is formed in the air gap. The second magnetic assembly 120 contains a second compensation member, and the second compensation member in the second magnetic assembly 120 has a pole pair number of 1 (pole number of 2), is alternately arranged in N, S polarities, and forms an air gap magnetic field distribution in which the fundamental wave pole pair number is also 1 in the air gap. The magnetic fields generated by the first magnetic assembly 110 and the second magnetic assembly 120 interact to form a compensation torque. The fundamental cycle number of the compensation torque is 1 for each revolution of the electrical component 200.

Specifically, the first magnetic assembly 110 forms a stationary magnetic field distribution in the air gap, and the second magnetic assembly 120 forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic assembly. When the electromotive assembly 200 operates, the stationary magnetic field distribution generated by the first magnetic assembly 110 interacts with the rotating magnetic field distribution generated by the second magnetic assembly 120, and the number of pole pairs of the stationary magnetic field distribution and the rotating magnetic field distribution is 1, so that the condition that the number of pole pairs of the magnetic field is equal is satisfied, and thus a torque action is formed. Because of the relative motion between the stationary magnetic field distribution and the rotating magnetic field distribution, the generated torque is not a constant value, but is an alternating torque with a direction and a magnitude that are periodically changed, and the alternating period is equal to the mechanical period of the operation of the electric component 200 divided by the number of pole pairs of the magnetic field. Therefore, the number of cycles of the compensating torque is 1 for each rotation of the electric component 200.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly 110 and the second magnetic assembly 120 are both radial, and similar to the magnetic flux directions of the air gap magnetic fields of the permanent magnet motor with the conventional radial magnetic flux structure, the magnetic flux paths are closed in a plane orthogonal to the rotating shaft 202.

The first magnetic assembly 110 and the second magnetic assembly 120 are flexibly arranged in various ways, and only the number of the fundamental wave pole pairs of the magnetic field distribution generated in the air gap is 1. The arrangement of the first and second

magnetic assemblies

110 and 120 includes, but is not limited to, a coreless structure, a Halbach (Halbach) array structure, a surface-mounted structure in which the first and second compensation components are mounted on the surface of the core, and a built-in structure in which the first and second compensation components are mounted in the slots of the core, that is, the arrangement of the permanent magnet of the conventional permanent magnet motor can be easily transplanted.

When the electromotive assembly operates, a stationary magnetic field distribution generated in the first magnetic assembly 110 interacts with a rotating magnetic field distribution generated in the second magnetic assembly 120 to form a compensation torque.

In fig. 5, N · m represents the unit N · m of the torque and the compensation torque.

Example two:

the present embodiment provides a torque compensation assembly 100, and in addition to the technical features of the above-described embodiments, further includes the following technical features.

The first magnetic element 110 is sleeved outside the second magnetic element 120.

As shown in fig. 2, 3 and 4, in this embodiment, the first magnetic component 110 is sleeved outside the second magnetic component 120, so that the structure is not disposed on the stator 206 component and the rotor 208 component of the electric component 200, and further the function of the electric component 200 is not affected, and the compensation torque can be generated when the electric component 200 operates.

Example three:

The first iron core 112 is annular, and the first compensation component 114 is arranged along the inner wall of the first iron core 112; the second compensation part 124 is disposed along an outer wall of the second core 122; the first compensation member 114 and the second compensation member 124 have a gap therebetween.

As shown in fig. 2, 3 and 4, in this embodiment, the first core 112 is annular, so that the first abutment can also be sleeved outside the second compensation component 124, the first compensation component 114 is disposed on the inner wall of the first core 112, the second compensation component 124 is disposed on the outer wall of the second core 122, and the first compensation component 114 and the second compensation component 124 are mounted and fixed, because a gap is formed between the first compensation component 114 and the second compensation component 124, the first compensation component 114 can form a stationary magnetic field distribution in the air gap, and the second compensation component 124 forms a rotating magnetic field distribution in the air gap.

Specifically, the first magnetic assembly 110 and the second magnetic assembly 120 each include 2 tile-shaped magnetic poles, and N, S are implemented with opposite magnetization directions. The magnetizing mode is radial radiation type magnetizing or radial parallel magnetizing, and the like, and the magnetizing mode refers to the permanent magnet magnetizing mode of a common surface-mounted permanent magnet motor.

Alternatively, the first and second

magnetic assemblies

110 and 120 are split in the circumferential direction by a plurality of first and second compensation members, thereby reducing the size of the single first and second compensation members. Based on this first and second compensation component tile combination scheme, each individual first and second compensation component allows for design into different sizes to meet the requirements of magnetic field harmonic configuration.

Example four:

The first magnetic assembly 110 and the second magnetic assembly 120 are disposed along an axial direction of the rotation shaft 202.

As shown in fig. 11, 12 and 13, in this embodiment, the first magnetic assembly 110 and the second magnetic assembly 120 may also be disposed along the axial direction of the rotating shaft 202 of the electromotive assembly 200, so that the first magnetic assembly 110 and the second magnetic assembly 120 may generate a static magnetic field and a rotating magnetic field in the axial direction.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are both axial, and the magnetic flux paths are closed in a curved surface parallel to the rotating shaft 202.

Example five:

The first iron core 112 is disc-shaped or annular, and the first compensation component 114 is disposed on at least one side of the first iron core 112 in the axial direction; the second core 122 is disc-shaped or ring-shaped, and the second compensation component 124 is disposed on at least one side of the second core 122 in the axial direction, and is disposed opposite to the first compensation component 114; a gap between the first compensation member 114 and the second compensation member 124.

As shown in fig. 11, 12, 13, 14, and 15, in this embodiment, the first compensation part 114 is provided on at least one side of the first core 112 in the axial direction, the second compensation part 124 is provided on at least one side of the second core 122 in the axial direction, is disposed opposite to the first compensation part 114, and a gap exists between the first compensation part 114 and the second compensation part 124.

Specifically, when the second compensation part 124 is disposed between two first compensation parts 114, the second compensation part 124 is disposed at both sides of the second core 122, and the first compensation part 114 is disposed at one side of the first core 112.

Specifically, when the first compensation part 114 is disposed between two second compensation parts 124, the first compensation part 114 is disposed at both sides of the first core 112, and the second compensation part 124 is disposed at one side of the second core 122.

Example six:

The number of the second compensation members 124 is plural, and the second compensation members are respectively arranged on both sides of the second iron core 122 in the axial direction; the number of the first magnetic assemblies 110 is two, and the two first magnetic assemblies are respectively disposed on two sides of the second magnetic assembly 120 in the axial direction.

As shown in fig. 16, in this embodiment, the first magnetic assemblies 110 are two sets and are disposed on both sides of the second magnetic assembly 120 in the axial direction, and the second compensation assemblies may be plural and are disposed on both sides of the second core 122 in the axial direction, so that the second compensation parts 124 may be disposed between the two sets of the first magnetic assemblies 110 to form an axial composite structure, and further so that a new second air gap is formed between the first magnetic assemblies 110 and the second magnetic assembly 120, so that the number of pole pairs of the first magnetic assemblies to which the axial composite section is newly added is 1, the pole pairs are alternately arranged in N, S polarities, and an air gap magnetic field distribution in which the number of pole pairs of the fundamental wave is also 1 is formed in the air gap. The other side of the second magnetic component has a pole pair number of 1 and is alternately arranged according to N, S polarities, and an air gap magnetic field distribution with the same fundamental pole pair number of 1 is formed in the second air gap.

Specifically, the number of the second compensation parts 124 is one, and the second compensation parts are respectively arranged on two sides of the second iron core 122 in the axial direction; the number of the first magnetic assemblies 110 is two, and the two first magnetic assemblies are respectively disposed on two sides of the second magnetic assembly 120 in the axial direction.

Specifically, the number of the second compensation members 124 is two, and the two second compensation members are respectively arranged on two sides of the second iron core 122 in the axial direction; the number of the first magnetic assemblies 110 is two, and the two first magnetic assemblies are respectively disposed on two sides of the second magnetic assembly 120 in the axial direction.

Example seven:

The number of the first compensation parts 114 is plural, and the first compensation parts are respectively arranged on two sides of the first iron core 112 in the axial direction; the number of the second magnetic assemblies 120 is two, and the two second magnetic assemblies are respectively disposed on two sides of the first magnetic assembly 110 in the axial direction.

As shown in fig. 17, in this embodiment, the number of the second magnetic assemblies 120 is two, and the second magnetic assemblies are disposed on both sides of the first magnetic assembly 110 in the axial direction, and the number of the first compensation parts 114 may be plural, and the first compensation parts are respectively disposed on both sides of the first iron core 112 in the axial direction, and may also form an axial composite structure, so that a new second air gap is formed between the first magnetic assembly 110 and the second magnetic assembly 120, so that the number of pole pairs of the first magnetic assembly of the newly added axial composite section is 1, the first magnetic assembly is alternately arranged according to N, S polarities, and an air gap magnetic field distribution in which the number of pole pairs of the fundamental wave is also 1 is formed in the second air gap. The other side of the second magnetic component has a pole pair number of 1 and is alternately arranged according to N, S polarities, and an air gap magnetic field distribution with the same fundamental pole pair number of 1 is formed in the second air gap.

Specifically, the number of the first compensation parts 114 is one, and the first compensation parts are respectively arranged on both sides of the first iron core 112 in the axial direction; the number of the second magnetic assemblies 120 is two, and the two second magnetic assemblies are respectively disposed on two sides of the first magnetic assembly 110 in the axial direction.

Specifically, the number of the first compensation parts 114 is two, and the two first compensation parts are respectively arranged on two sides of the first iron core 112 in the axial direction; the number of the second magnetic assemblies 120 is two, and the two second magnetic assemblies are respectively disposed on two sides of the first magnetic assembly 110 in the axial direction.

Example eight:

The first compensation component 114 includes at least two sets of first magnetic components, which are arranged at intervals along the circumferential direction of the first core 112; the second compensation part 124 includes at least two sets of second magnetic parts, which are disposed at intervals in a circumferential direction of the second core 122.

As shown in fig. 6 and 7, in this embodiment, the first compensation component 114 is composed of at least two sets of first magnetic components and is arranged at intervals along the circumferential direction of the first iron core 112, and similarly, the second compensation component 124 is composed of at least two sets of second magnetic components and is arranged at intervals along the circumferential direction of the second iron core 122, such that, during the operation of the electric module 200, by arranging at least two sets of first compensation components 114 and two sets of second compensation components, during the gas suction and gas discharge of the electric module 200, the static magnetic field generated by the first compensation component 114 and the rotating magnetic field generated by the second compensation component 124 interact to generate a compensation torque, and thus the torque of the electric module 200 can be compensated.

Specifically, the second compensation component includes two sets of second magnetic components, the magnetic directions of the two sets of second magnetic components are opposite, the magnetization direction of one set of second magnetic component in the two sets of second magnetic components is from the axis of the rotor 208 core to the outer wall of the second core, and the magnetization direction of the other set of second magnetic component in the two sets of second magnetic components is from the outer wall of the second core to the axis of the second core.

Example nine:

In this embodiment, each of the at least two sets of first magnetic components includes at least one first magnetic component; each of the at least two sets of second magnetic components includes at least one second magnetic component, so that during the operation of the electric assembly 200, the magnitude of the compensation torque can be changed by changing the number of the first magnetic components and the number of the second magnetic components.

Example ten:

The gap between the first compensation member 114 and the second compensation member 124 decreases from one end to the other end and then increases.

As shown in fig. 8 and 9, in this embodiment, the gap between the first compensation component 114 and the second compensation component 124 is decreased from one end to the other end and then increased, so that the gap distance between the first compensation component 114 and the second compensation component 124 is not uniform, and the waveform of the compensation torque is optimized.

Specifically, the thickness of the second compensation member 124 is uniform, the thickness of the first compensation member 114 is smaller at both ends than in the middle of the first compensation member 114, and a gap is ensured between the first compensation member 114 and the second compensation member 124, so that the gap between the first compensation member 114 and the second compensation member 124 is first reduced from one end to the other end and then increased.

Specifically, the thickness of the first compensation member 114 is uniform, the thickness of the second compensation member 124 is smaller at both ends than in the middle of the second compensation member 124, and a gap is ensured between the first compensation member 114 and the second compensation member 124, so that the gap between the first compensation member 114 and the second compensation member 124 is first reduced from one end to the other end and then increased.

Example eleven:

The axial length of the first magnetic assembly 110 is not equal to the axial length of the second magnetic assembly 120; and/or the diameter of the first magnetic component 110 is not equal to the diameter of the second magnetic component 120.

As shown in fig. 3, in this embodiment, the axial length of the first magnetic assembly 110 is not equal to the axial length of the second magnetic assembly 120; the diameter of the first magnetic assembly 110 is not equal to the diameter of the second magnetic assembly 120, so that the first magnetic assembly 110 and the second magnetic assembly 120 can stably generate the compensation torque when the electric assembly 200 operates.

Example twelve:

The first magnetic assembly 110 further includes a through hole disposed on the first core and penetrating in an axial direction of the first core 112; and/or, the second magnetic assembly 120 also includes a through hole, which is provided in the second core 122 and penetrates in the axial direction of the second core 122.

In this embodiment, a through hole is formed in the first core 112 of the first magnetic assembly 110 and penetrates in the axial direction of the first core 112, and a through hole is formed in the second core 122 of the second magnetic assembly 120 and penetrates in the axial direction of the second core 122, so that the gas drawn in by the electromotive assembly 200 can be compressed and then discharged through the through hole in the first core 112.

Specifically, when there are a plurality of sets of first compensation parts 114 in the first magnetic assembly 110, there are through holes in each first core 112, and when there are a plurality of sets of second compensation parts 124 in the second magnetic assembly 120, there are also through holes in each second core 122.

Example thirteen:

the present embodiment provides an electric assembly 200, which includes the torque compensation assembly 100, and therefore, the electric assembly 200 has all the advantages of any of the embodiments.

As shown in fig. 10, in this embodiment, an air gap is formed between the first magnetic assembly 110 and the second magnetic assembly 120, the first magnetic assembly 110 is connected to a support of the electric assembly 200, the second magnetic assembly 120 is connected to a rotating shaft 202 of the electric assembly 200, so that when the electric assembly 200 works, the electric assembly drives the piston to rotate and compress air, the second magnetic assembly also rotates synchronously and generates relative rotation with the first magnetic assembly, so as to mount and fix the first magnetic assembly 110 and the second magnetic assembly 120, when the electric assembly 200 works, a static magnetic field generated by the first compensation part 114 interacts with a rotating magnetic field generated by the second compensation part 124 to generate a compensation torque, so that the compensation of the torque can be realized through the structure of the electric assembly 200 itself, so that the output torque of the electric assembly 200 can change along with the process of compressing air by the electric assembly 200, the condition that torque imbalance occurs in the electric component 200 is avoided, and the rotating speed fluctuation of the electric component 200 is reduced, so that vibration and noise are reduced, and particularly when the electric component 200 works at a low frequency and a low speed, the rotating speed fluctuation of the electric component 200 can be better reduced, the vibration and the noise are reduced, and further the low-frequency performance of the electric component 200 is improved.

And, single cylinder electric component 200 has simple structure and low cost's advantage, can wide application in refrigeration plant such as air conditioner and refrigerator, especially when being single cylinder compressor to electric component 200, because single cylinder compressor 200 load torque fluctuates greatly, if not carry out torque compensation will appear obvious rotational speed fluctuation problem, produce vibration and noise and reduce the reliability, seriously influence the low frequency performance of single cylinder compressor, this application compensates the torque of single cylinder compressor through torque compensation subassembly 100, and then the reduction rotational speed that can be better is undulant, and reduce vibration and noise, improve the low frequency performance of single cylinder compressor.

The first magnetic assembly contains a first compensation component, the number of pole pairs of the first compensation component in the first magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The second magnetic assembly contains a second compensation component, the number of pole pairs of the second compensation component in the second magnetic assembly is 1 (the number of pole pairs is 2), the pole pairs are alternately arranged according to N, S polarities, and air gap magnetic field distribution with the same number of pole pairs of fundamental waves as 1 is formed in an air gap. The magnetic fields generated by the first magnetic assembly and the second magnetic assembly interact to form a compensation torque. The fundamental cycle number of the compensation torque is 1 for each revolution of the electrical component 200.

Specifically, the first magnetic assembly forms a stationary magnetic field distribution in the air gap, and the second magnetic assembly forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic assembly. When the electric component 200 operates, the static magnetic field distribution generated by the first magnetic component and the rotating magnetic field distribution generated by the second magnetic component interact, the number of pole pairs of the static magnetic field distribution and the rotating magnetic field distribution is 1, and the condition that the number of pole pairs of the magnetic fields is equal is met, so that a torque effect is formed. Because of the relative motion between the stationary magnetic field distribution and the rotating magnetic field distribution, the generated torque is not a constant value, but is an alternating torque with a direction and a magnitude that are periodically changed, and the alternating period is equal to the mechanical period of the operation of the electric component 200 divided by the number of pole pairs of the magnetic field. Therefore, the number of cycles of the compensating torque is 1 for each rotation of the electric component 200.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are both radial, and similar to the magnetic flux directions of the air gap magnetic field of the permanent magnet motor with the conventional radial magnetic flux structure, the magnetic flux paths are closed in a plane orthogonal to the rotating shaft 202.

As shown in fig. 18, in particular, the first magnetic assembly 110 and the second magnetic assembly 120 may also be disposed along the axial direction of the rotating shaft 202 of the electromotive assembly 200, so that the first magnetic assembly 110 and the second magnetic assembly 120 may generate a static magnetic field and a rotating magnetic field in the axial direction.

Specifically, the magnetic flux directions of the magnetic fields generated in the air gap by the first magnetic assembly and the second magnetic assembly are both axial, and similar to the magnetic flux direction of the air gap magnetic field of a conventional axial magnetic flux structure permanent magnet motor (disk motor), the magnetic flux paths are closed in a curved surface parallel to the rotating shaft 202.

Example fourteen:

The support is a housing 204, and the electric assembly 200 further includes: the stator 206, the stator 206 is set up in the body 204, link with body 204; a rotor 208, wherein the rotor 208 is inserted into the stator 206, and the rotating shaft 202 is inserted into the rotor 208; the cylinder 210, the cylinder 210 includes a cylinder body and a piston, the cylinder body is connected with the housing 204, and the piston is connected with the rotating shaft 202.

As shown in fig. 1 and 11, in this embodiment, the stator 206 is disposed in the housing 204 and connected to the housing 204, the rotor 208 is inserted in the stator 206, and the rotating shaft 202 is inserted in the rotor 208; the cylinder 210 comprises a cylinder body and a piston, the cylinder body is connected with the shell 204, the piston is connected with the rotating shaft 202, the stator 206, the rotor 208 and the rotating shaft 202 are installed and fixed, when the electric component 200 operates, the stator 206 and the rotor 208 generate torque according to the principle of a permanent magnet synchronous motor, and therefore initial power can be provided for the electric component 200 to drive the piston to rotate and compress air.

Example fifteen:

the present embodiment provides an electrical apparatus including the above-mentioned electric component 200, and therefore, the electrical apparatus has all the advantages of any of the above-mentioned embodiments.

As shown in fig. 10, an air gap is formed between the first magnetic assembly 110 and the second magnetic assembly 120, the first magnetic assembly 110 is connected to a support of the electric assembly 200, the second magnetic assembly 120 is connected to a rotating shaft 202 of the electric assembly 200, so that when the electric assembly 200 works, the electric assembly drives the piston to rotate and compress air, the second magnetic assembly also synchronously rotates and generates relative rotation with the first magnetic assembly, so as to realize the installation and fixation of the first magnetic assembly 110 and the second magnetic assembly 120, when the electric assembly 200 works, a static magnetic field generated by the first compensation part 114 interacts with a rotating magnetic field generated by the second compensation part 124 to generate a compensation torque, so that the torque compensation can be realized through the structure of the electric assembly 200, and the output torque of the electric assembly 200 can change along with the process of compressing air by the electric assembly 200, the condition that torque imbalance occurs in the electric component 200 is avoided, and the rotating speed fluctuation of the electric component 200 is reduced, so that vibration and noise are reduced, and particularly when the electric component 200 works at a low frequency and a low speed, the rotating speed fluctuation of the electric component 200 can be better reduced, the vibration and the noise are reduced, and further the low-frequency performance of the electric component 200 is improved.

And, the single cylinder electric component 200 has the advantages of simple structure and low cost, can be widely applied to refrigeration equipment such as air conditioners and refrigerators, especially when the electric component 200 is a single cylinder compressor, because the single cylinder compressor has large load torque fluctuation, if obvious rotational speed fluctuation problem will appear without torque compensation, vibration and noise are generated and reliability is reduced, the low frequency performance of the single cylinder compressor is seriously influenced, the torque of the compressor is compensated through the torque compensation component 100 in the application, and then the rotational speed fluctuation can be better reduced, and vibration and noise are reduced, and the low frequency performance of the single cylinder compressor is improved. And compared with the conventional compensation torque generated by regulating the motor current through electric control, the compensation current is not required to be additionally introduced, the efficiency of the electric drive system is not reduced, and the required torque compensation can be met.

In the claims, the specification and the drawings of the specification of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings only for the purpose of describing the present invention more conveniently and simplifying the description, and do not indicate or imply that the referred device or element must have the described specific orientation, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art from the above data specifically.

In the claims, specification, and drawings that follow the present disclosure, the description of the terms "one embodiment," "some embodiments," "specific embodiments," and so forth, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In the claims, specification and drawings of the present invention, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A torque compensation assembly for a motorized assembly including a support and a shaft, the torque compensation assembly comprising:

the first magnetic assembly comprises a first iron core and a first compensation part, the first iron core is connected with the support, and the first compensation part is annularly arranged along the circumferential direction of the first iron core;

the second magnetic assembly comprises a second iron core and a second compensation component, the second iron core is connected with the rotating shaft, and the second compensation component is annularly arranged along the circumferential direction of the second iron core;

wherein the first compensation component and the second compensation component generate compensation torque through the action of a magnetic field.

2. The torque compensation assembly of claim 1,

the first magnetic component is sleeved outside the second magnetic component.

3. The torque compensation assembly of claim 2,

the first iron core is annular, and the first compensation component is arranged along the inner wall of the first iron core;

the second compensation part is arranged along the outer wall of the second iron core;

the first compensation member and the second compensation member have a gap therebetween.

4. The torque compensation assembly of claim 1,

the first magnetic assembly and the second magnetic assembly are arranged along the axial direction of the rotating shaft.

5. The torque compensation assembly of claim 4,

the first iron core is disc-shaped or annular, and the first compensation part is arranged on at least one side of the first iron core in the axial direction;

the second iron core is disc-shaped or annular, and the second compensation part is arranged on at least one side of the second iron core in the axial direction and is opposite to the first compensation part;

6. Torque compensating assembly according to claim 5,

the number of the second compensation parts is multiple, and the second compensation parts are respectively arranged on two sides of the second iron core in the axial direction;

the number of the first magnetic assemblies is two, and the first magnetic assemblies are respectively arranged on two sides of the second magnetic assembly in the axial direction.

7. Torque compensating assembly according to claim 5,

the first compensation parts are arranged on two sides of the first iron core in the axial direction respectively;

the number of the second magnetic assemblies is two, and the second magnetic assemblies are respectively arranged on two sides of the first magnetic assembly in the axial direction.

8. Torque compensating assembly according to any of claims 1 to 7,

the first compensation component comprises at least two groups of first magnetic components which are arranged at intervals along the circumferential direction of the first iron core;

the second compensation component comprises at least two groups of second magnetic components which are arranged at intervals along the circumferential direction of the second iron core.

9. The torque compensation assembly of claim 8,

each of the at least two sets of first magnetic components comprises at least one first magnetic component; and/or

Each of the at least two sets of second magnetic components includes at least one second magnetic component.

10. Torque compensating assembly according to any of claims 1 to 7,

the gap between the first compensation part and the second compensation part is firstly reduced from one end to the other end and then is increased.

11. Torque compensating assembly according to any of claims 1 to 7,

the axial length of the first magnetic component is not equal to the axial length of the second magnetic component; and/or

The diameter of the first magnetic component is not equal to the diameter of the second magnetic component.

12. Torque compensating assembly according to any of claims 1 to 7,

the first magnetic assembly further comprises a through hole which is arranged on the first iron core and penetrates through the first iron core in the axial direction; and/or

The second magnetic assembly further comprises a through hole, and the through hole is formed in the second iron core and penetrates through the second iron core in the axial direction.

13. An electrical assembly comprising a torque compensation assembly according to any one of claims 1 to 12.

14. The powered assembly of claim 13, wherein the support member is a housing, the powered assembly further comprising:

the stator is arranged in the shell and is connected with the shell;

the rotor is inserted into the stator, and the rotating shaft is inserted into the rotor;

the air cylinder comprises a cylinder body and a piston, the cylinder body is connected with the shell, and the piston is connected with the rotating shaft.

15. An electrical apparatus, characterized in that it comprises an electrically powered assembly according to claim 13 or 14.