Torque compensation components, electric components and electrical equipment

Abstract

The present invention provides a torque compensation component, an electric component and an electrical device. The torque compensation component is used for the electric component, the electric component includes a support and a rotating shaft, and the torque compensation component includes: a first magnetic component, the first magnetic component includes a first core and a first compensation component, the first core is connected to the support, and the first compensation component is arranged in a ring shape along the circumference of the first core; a second magnetic component, the second magnetic component includes a second core and a second compensation component, the second core is connected to the rotating shaft, and the second compensation component is arranged in a ring shape along the circumference of the second core; wherein the first compensation component and the second compensation component generate mechanical effects through magnetic fields. The torque compensation component provided by the present invention generates a compensation torque through the interaction between the static magnetic field generated by the first compensation component and the rotating magnetic field generated by the second compensation component, thereby realizing torque compensation through the structure of the electric component itself.

Description

Technical Field

[0001] The invention relates to the field of compressors, and in particular to a torque compensation component, an electric component and electrical equipment. Background Art

[0002] At present, in the relevant technology, when the compressor compresses gas, the gas resistance torque changes periodically, causing the compressor load torque to fluctuate periodically. However, since the output torque of the compressor drive motor is a constant value, the compressor has torque imbalance, which in turn causes the compressor speed to fluctuate. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present invention provides a torque compensation component.

[0005] A second aspect of the present invention provides an electric component.

[0006] A third aspect of the present invention provides an electrical device.

[0007] In view of this, a first aspect of the present invention provides a torque compensation component, which is used for an electric component, the electric component includes a support member and a rotating shaft, and the torque compensation component includes: a first magnetic component, the first magnetic component includes a first iron core and a first compensation component, the first iron core is connected to the support member, and the first compensation component is annularly arranged along the circumference of the first iron core; a second magnetic component, the second magnetic component includes a second iron core and a second compensation component, the second iron core is connected to the rotating shaft, and the second compensation component is annularly arranged along the circumference 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.

[0008] In this technical solution, there is an air gap between the first magnetic component and the second magnetic component, the first magnetic component is connected to the support of the electric component, and the second magnetic component is connected to the rotating shaft of the electric component, so that when the electric component is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component, so as to achieve the installation and fixation of the first magnetic component and the second magnetic component. When the electric component is working, the static magnetic field generated by the first compensation component interacts with the rotating magnetic field generated by the second compensation component to generate a compensation torque, so that the torque can be compensated by the structure of the electric component itself, so that the output torque of the electric component can change with the process of compressing the gas of the electric component, avoiding the situation of torque imbalance of the electric component, reducing the speed fluctuation of the compressor, thereby reducing vibration and noise, especially when the compressor is working at low frequency and low speed, it can better reduce the speed fluctuation of the compressor, reduce vibration and noise, and thus improve the low-frequency performance of the compressor.

[0009] In addition, the single-cylinder compressor has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. Especially when the electric component is a single-cylinder compressor, due to the large load torque fluctuation of the single-cylinder compressor, if torque compensation is not performed, there will be obvious speed fluctuation problems, generating vibration and noise and reducing reliability, seriously affecting the low-frequency performance of the compressor. The present application compensates the torque of the compressor through a torque compensation component, thereby better reducing speed fluctuations, reducing vibration and noise, and improving the low-frequency performance of the single-cylinder compressor.

[0010] Moreover, compared with the conventional method of generating compensation torque by regulating the motor current through electronic control, there is no need to introduce additional compensation current, nor will it cause a decrease in the efficiency of the electric drive system, and the required torque compensation can be met.

[0011] The first magnetic component contains a first compensation component, the pole pair number of the first compensation component in the first magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component contains a second compensation component, the pole pair number of the second compensation component in the second magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component and the second magnetic component interact with each other to form a compensation torque. For each rotation of the electric component, the fundamental wave period number of the compensation torque is 1.

[0012] Specifically, the first magnetic component forms a static magnetic field distribution in the air gap, and the second magnetic component forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the electric component is running, the static magnetic field distribution generated in the first magnetic component interacts with the rotating magnetic field distribution generated by the second magnetic component, and the pole pairs of both are 1, satisfying the condition that the pole pairs of the magnetic field are equal, thereby forming a torque effect. Since there is relative motion between the above-mentioned static magnetic field distribution and the rotating magnetic field distribution, the torque generated is not a constant value, but an alternating torque with a periodic change in direction and magnitude. The alternating period is equal to the mechanical period of the operation of the electric component divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component.

[0013] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux path is closed in a plane orthogonal to the rotating shaft.

[0014] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0015] In a technical solution of the present invention, the first magnetic component is sleeved on the outside of the second magnetic component.

[0016] In this technical solution, the first magnetic component is arranged outside the second magnetic component, so that the structure is not arranged on the stator component and the rotor component of the electric component, and thus will not affect the function of the electric component, and can generate compensating torque when the electric component is running.

[0017] In a technical solution of the present invention, the first core is annular, the first compensation component is arranged along the inner wall of the first core; the second compensation component is arranged along the outer wall of the second core; and there is a gap between the first compensation component and the second compensation component.

[0018] In this technical solution, the first iron core is annular, so that the first core can also be mounted on the outside of the second compensation component, and the first compensation component is arranged on the inner wall of the first iron core, and the second compensation component is arranged on the outer wall of the second iron core, so as to realize the installation and fixation of the first compensation component and the second compensation component. Since there is a gap between the first compensation component and the second compensation component, the first compensation component can form a static magnetic field distribution in the air gap, and the second compensation component can form a rotating magnetic field distribution in the air gap.

[0019] Specifically, the first permanent magnetic component and the second permanent magnetic component both include two tile-shaped magnetic poles, and use opposite magnetizing directions to realize two polarities of N and S. The magnetizing method is radial radiation magnetizing or radial parallel magnetizing, etc., referring to the permanent magnet magnetizing method of ordinary surface-mounted permanent magnet motors.

[0020] Optionally, the first magnetic component and the second magnetic component are composed of a plurality of first compensation components and a plurality of second compensation components assembled in a circumferential direction, thereby reducing the size of a single first compensation component and a single second compensation component. Based on this first compensation component and a second compensation component assembly scheme, each single first compensation component and a second compensation component can be designed to have different sizes to meet the requirements of the magnetic field harmonic structure.

[0021] In a technical solution of the present invention, the first magnetic component and the second magnetic component are arranged along the axial direction of the rotating shaft.

[0022] In this technical solution, the first magnetic component and the second magnetic component can also be arranged along the axial direction of the rotating shaft of the electric component, so that the first magnetic component and the second magnetic component can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0023] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0024] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both axial, and the magnetic flux path is closed in a curved surface parallel to the rotating shaft.

[0025] In one technical solution of the present invention, the first core is disc-shaped or ring-shaped, and the first compensation component is arranged on at least one side of the first core in the axial direction; the second core is disc-shaped or ring-shaped, and the second compensation component is arranged on at least one side of the second core in the axial direction, opposite to the first compensation component; there is a gap between the first compensation component and the second compensation component.

[0026] In this technical solution, the first compensation component is arranged on at least one side of the first core in the axial direction, and the second compensation component is arranged on at least one side of the second core in the axial direction, opposite to the first compensation component, and there is a gap between the first compensation component and the second compensation component.

[0027] Specifically, when the second compensation component is disposed between two first compensation components, the second compensation component is disposed on both sides of the second core, and the first compensation component is disposed on one side of the first core.

[0028] Specifically, when the first compensation component is disposed between two second compensation components, the first compensation component is disposed on both sides of the first core, and the second compensation component is disposed on one side of the second core.

[0029] In a technical solution of the present invention, there are multiple second compensation components, which are respectively arranged on both sides of the second core in the axial direction; there are two groups of first magnetic components, which are respectively arranged on both sides of the second magnetic component in the axial direction.

[0030] In this technical solution, there are two groups of first magnetic components, which are arranged on both sides of the second magnetic component in the axial direction, and there can be multiple second compensation components, which are arranged on both sides of the second core in the axial direction, so that multiple second compensation components can be arranged between the two groups of first magnetic components to form an axial composite structure, thereby forming a new second air gap between the first magnetic component and the second magnetic component, so that the pole pair number of the first magnetic component of the newly added axial composite section is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap. The pole pair number on the other side of the second magnetic component is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap.

[0031] Specifically, the number of the second compensation component is one, which is respectively arranged on both sides of the second core in the axial direction; the number of the first magnetic components is two groups, which are respectively arranged on both sides of the second magnetic components in the axial direction.

[0032] Specifically, there are two second compensation components, which are respectively arranged on both sides of the second core in the axial direction; there are two groups of first magnetic components, which are respectively arranged on both sides of the second magnetic component in the axial direction.

[0033] In a technical solution of the present invention, there are multiple first compensation components, which are respectively arranged on both sides of the first core in the axial direction; there are two groups of second magnetic components, which are respectively arranged on both sides of the first magnetic component in the axial direction.

[0034] In this technical solution, the number of second magnetic components is two groups, which are arranged on both sides of the first magnetic component in the axial direction. The number of first compensation components can be multiple, which are respectively arranged on both sides of the first core in the axial direction, and an axial composite structure can also be formed, thereby forming a new second air gap between the first magnetic component and the second magnetic component, so that the pole pair number of the first magnetic component of the newly added axial composite section is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap. The pole pair number on the other side of the second magnetic component is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap.

[0035] Specifically, there is one first compensation component, which is disposed on both sides of the first core in the axial direction; and there are two groups of second magnetic components, which are disposed on both sides of the first magnetic component in the axial direction.

[0036] Specifically, there are two first compensation components, which are respectively arranged on both sides of the first core in the axial direction; and there are two groups of second magnetic components, which are respectively arranged on both sides of the first magnetic component in the axial direction.

[0037] In one technical solution of the present invention, the first compensation component includes at least two groups of first magnetic components, and the at least two groups of magnetic components are arranged at intervals along the circumference of the first core; the second compensation component includes at least two groups of second magnetic components, and the at least two groups of second magnetic components are arranged at intervals along the circumference of the second core.

[0038] In this technical solution, the first compensation component is composed of at least two groups of first magnetic components, which are arranged at intervals along the circumference of the first iron core. Similarly, the second compensation component is composed of at least two groups of second magnetic components, which are arranged at intervals along the circumference of the second iron core. Such an arrangement can be achieved in the operation of the electric component by arranging at least two groups of first compensation components and two groups of second compensation components. When the electric component inhales and exhausts gas, the static magnetic field generated by the first compensation component interacts with the rotating magnetic field generated by the second compensation component to generate a compensation torque, thereby compensating the torque of the electric component.

[0039] Specifically, the magnetic directions of the two groups of first magnetic components are opposite. The magnetic direction of the two groups of first magnetic components is clockwise, that is, the first magnetic components of this group are magnetized in the clockwise direction, and the magnetic direction of the other group of first magnetic components is counterclockwise, that is, the first magnetic components of this group are magnetized in the counterclockwise direction.

[0040] 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 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 the two groups of second magnetic components is from the outer wall of the second core to the axis of the rotor core.

[0041] In a technical solution of the present invention, each of the at least two groups of first magnetic components includes at least one first magnetic component; and / or each of the at least two groups of second magnetic components includes at least one second magnetic component.

[0042] In this technical solution, each of the at least two groups of first magnetic components includes at least one first magnetic component; each of the at least two groups of second magnetic components includes at least one second magnetic component, so that during the operation of the electric component, the size of the compensation torque can be changed by changing the number of first magnetic components and the number of second magnetic components.

[0043] 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 components includes two second magnetic components, thereby forming a pole pair number of 1 in the first compensation component and the second compensation component, respectively, and arranged alternately with N and S polarities, and forming an air gap magnetic field distribution in the second air gap with a fundamental wave pole pair number of 1.

[0044] 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 components includes three second magnetic components, thereby forming a pole pair number of 1 in the first compensation component and the second compensation component, respectively, and arranged alternately with N and S polarities, and forming an air gap magnetic field distribution in the second air gap with a fundamental wave pole pair number of 1.

[0045] In a technical solution of the present invention, the gap between the first compensation component and the second compensation component first decreases and then increases from one end to the other end.

[0046] In this technical solution, by setting the gap between the first compensation component and the second compensation component to first decrease and then increase from one end to the other end, the air gap spacing between the first compensation component and the second compensation component is no longer uniform, thereby optimizing the waveform of the compensation torque.

[0047] Specifically, the thickness of the second compensation component is uniform, the thickness of the first compensation component at both ends is smaller than the thickness in the middle of the first compensation component, and a gap is ensured between the first compensation component and the second compensation component, so that the gap between the first compensation component and the second compensation component first decreases and then increases from one end to the other end.

[0048] Specifically, the thickness of the first compensation component is uniform, the thickness of the second compensation component at both ends is smaller than the thickness in the middle of the second compensation component, and a gap is ensured between the first compensation component and the second compensation component, so that the gap between the first compensation component and the second compensation component first decreases and then increases from one end to the other end.

[0049] In a technical solution of the present invention, 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.

[0050] In this technical solution, the axial length of the first magnetic component is not equal to the axial length of the second magnetic component; the diameter of the first magnetic component is not equal to the diameter of the second magnetic component, so that the first magnetic component and the second magnetic component can stably generate compensating torque when the electric component is running.

[0051] In one technical solution of the present invention, the first magnetic component further includes a flow hole, which is arranged on the first core and passes through the first core in the axial direction; and or the second magnetic component also includes a flow hole, which is arranged on the second core and passes through the second core in the axial direction.

[0052] In this technical solution, a flow hole is provided on the first core of the first magnetic component and passes through the first core in the axial direction. A flow hole is provided on the second core of the second magnetic component and passes through the second core in the axial direction, so that the electric component can discharge the drawn gas through the flow hole on the first core after compressing it.

[0053] Specifically, when there are multiple groups of first compensation components in the first magnetic assembly, each first core has a flow hole, and when there are multiple groups of second compensation components in the second magnetic assembly, each second core also has a flow hole.

[0054] A second aspect of the present invention provides an electric component, including the above-mentioned torque compensation component, so that the electric component has all the beneficial effects of any of the above-mentioned technical solutions.

[0055] In this technical solution, there is an air gap between the first magnetic component and the second magnetic component, the first magnetic component is connected to the support member of the electric component, and the second magnetic component is connected to the rotating shaft of the electric component, so that when the electric component is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component to achieve the installation and fixation of the first magnetic component and the second magnetic component. When the electric component is working, the static magnetic field generated by the first compensation component interacts with the rotating magnetic field generated by the second compensation component to generate a compensating torque, so that the torque can be compensated through the structure of the electric component itself, so that the output torque of the electric component can change with the gas compression process of the electric component, avoiding the situation of torque imbalance in the electric component, reducing the speed fluctuation of the compressor, thereby reducing vibration and noise, especially when the compressor is working at low frequency and low speed, it can better reduce the speed fluctuation of the compressor, reduce vibration and noise, and thus improve the low-frequency performance of the compressor.

[0056] In addition, the single-cylinder compressor has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. Especially when the electric component is a single-cylinder compressor, due to the large load torque fluctuation of the single-cylinder compressor, if torque compensation is not performed, there will be obvious speed fluctuation problems, generating vibration and noise and reducing reliability, seriously affecting the low-frequency performance of the compressor. The present application compensates the torque of the compressor through a torque compensation component, thereby better reducing speed fluctuations, reducing vibration and noise, and improving the low-frequency performance of the single-cylinder compressor.

[0057] Moreover, compared with the conventional method of generating compensation torque by regulating the motor current through electronic control, there is no need to introduce additional compensation current, nor will it cause a decrease in the efficiency of the electric drive system, and the required torque compensation can be met.

[0058] The first magnetic component contains a first compensation component, the pole pair number of the first compensation component in the first magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component contains a second compensation component, the pole pair number of the second compensation component in the second magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component and the second magnetic component interact with each other to form a compensation torque. For each rotation of the compressor, the fundamental wave period number of the compensation torque is 1.

[0059] Specifically, the first magnetic component forms a static magnetic field distribution in the air gap, and the second magnetic component forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the compressor is running, the static magnetic field distribution generated by the first magnetic component interacts with the rotating magnetic field distribution generated by the second magnetic component. The pole pairs of both are 1, which satisfies the condition that the pole pairs of the magnetic field are equal, thus forming a torque effect. Since there is relative motion between the above-mentioned static magnetic field distribution and the rotating magnetic field distribution, the torque generated is not a constant value, but an alternating torque with periodic changes in direction and magnitude. The alternating period is equal to the mechanical period of the operation of the electric component divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component.

[0060] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux path is closed in a plane orthogonal to the rotating shaft.

[0061] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0062] Specifically, the first magnetic component and the second magnetic component may also be arranged along the axial direction of the rotating shaft of the electric component, so that the first magnetic component and the second magnetic component can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0063] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0064] Specifically, the magnetic flux direction of the magnetic field generated by the first magnetic component and the second magnetic component in the air gap is axial, which is similar to the magnetic flux direction of the air gap magnetic field of a conventional axial flux structure permanent magnet motor (disc motor), and the magnetic flux path is closed in a curved surface parallel to the rotating shaft.

[0065] In addition, the electric component in the above technical solution provided by the present invention may also have the following additional technical features:

[0066] In one technical solution of the present invention, the support member is a shell, and the electric component also includes: a stator, which is arranged in the shell and connected to the shell; a rotor, which is inserted in the stator and the rotating shaft is inserted in the rotor; a cylinder, which includes a cylinder body and a piston, the cylinder body is connected to the shell, and the piston is connected to the rotating shaft.

[0067] In this technical solution, the stator is arranged in the shell and connected to the shell, the rotor is inserted in the stator, and the rotating shaft is inserted in the rotor; the cylinder includes a cylinder body and a piston, the cylinder body is connected to the shell, and the piston is connected to the rotating shaft, thereby realizing the installation and fixation of the stator, rotor and rotating shaft. When the electric component is running, the stator and the rotor generate torque according to the principle of permanent magnet synchronous motor, thereby providing initial power for the compressor cylinder to drive the piston to rotate and compress the gas.

[0068] The third aspect of the present invention provides an electrical device, including the above-mentioned electric component, so that the electrical device has all the beneficial effects of any of the above-mentioned technical solutions.

[0069] In this technical solution, there is an air gap between the first magnetic component and the second magnetic component, the first magnetic component is connected to the support member of the electric component, and the second magnetic component is connected to the rotating shaft of the electric component, so that when the electric component is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component, thereby realizing the installation and fixation of the first magnetic component and the second magnetic component. When the electric component is working, the static magnetic field generated by the first compensation component interacts with the rotating magnetic field generated by the second compensation component to generate a compensating torque, so that the torque can be compensated through the structure of the electric component itself, so that the output torque of the electric component can change with the gas compression process of the electric component, avoiding the situation of torque imbalance in the electric component, reducing the speed fluctuation of the electric component, thereby reducing vibration and noise, especially when the electric component is working at low frequency and low speed, the speed fluctuation of the electric component can be better reduced, vibration and noise can be reduced, and the low-frequency performance of the electric component can be improved.

[0070] In addition, the single-cylinder compressor has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. Especially when the electric component is a single-cylinder compressor, due to the large load torque fluctuation of the single-cylinder compressor, if torque compensation is not performed, there will be obvious speed fluctuation problems, generating vibration and noise and reducing reliability, seriously affecting the low-frequency performance of the compressor. The present application compensates the torque of the compressor through a torque compensation component, thereby better reducing speed fluctuations, reducing vibration and noise, and improving the low-frequency performance of the single-cylinder compressor.

[0071] Moreover, compared with the conventional method of generating compensation torque by regulating the motor current through electronic control, there is no need to introduce additional compensation current, nor will it cause a decrease in the efficiency of the electric drive system, and the required torque compensation can be met.

[0072] The first magnetic component contains a first compensation component, the pole pair number of the first compensation component in the first magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component contains a second compensation component, the pole pair number of the second compensation component in the second magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component and the second magnetic component interact with each other to form a compensation torque. For each rotation of the electric component, the fundamental wave period number of the compensation torque is 1.

[0073] Specifically, the first magnetic component forms a static magnetic field distribution in the air gap, and the second magnetic component forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the electric component is running, the static magnetic field distribution generated in the first magnetic component interacts with the rotating magnetic field distribution generated by the second magnetic component, and the pole pairs of both are 1, satisfying the condition that the pole pairs of the magnetic field are equal, thereby forming a torque effect. Since there is relative motion between the above-mentioned static magnetic field distribution and the rotating magnetic field distribution, the torque generated is not a constant value, but an alternating torque with a periodic change in direction and magnitude. The alternating period is equal to the mechanical period of the operation of the electric component divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component.

[0074] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux path is closed in a plane orthogonal to the rotating shaft.

[0075] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0076] Specifically, the first magnetic component and the second magnetic component may also be arranged along the axial direction of the rotating shaft of the electric component, so that the first magnetic component and the second magnetic component can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0077] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0078] Specifically, the magnetic flux direction of the magnetic field generated by the first magnetic component and the second magnetic component in the air gap is axial, which is similar to the magnetic flux direction of the air gap magnetic field of a conventional axial flux structure permanent magnet motor (disc motor), and the magnetic flux path is closed in a curved surface parallel to the rotating shaft.

[0079] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0081] Figure 1 One of the schematic diagrams of a torque compensation assembly and an electric assembly according to an embodiment of the present invention is shown;

[0082] Figure 2 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0083] Figure 3 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0084] Figure 4 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0085] Figure 5 A schematic diagram showing the relationship between the compensation torque and the magnetic field according to an embodiment of the present invention is shown;

[0086] Figure 6 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0087] Figure 7 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0088] Figure 8One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0089] Fig. 9 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0090] Fig.10 One of the schematic diagrams of an electrical device according to an embodiment of the present invention is shown;

[0091] Fig.11 One of the schematic diagrams of a torque compensation assembly and an electric assembly according to an embodiment of the present invention is shown;

[0092] Fig.12 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0093] Fig.13 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0094] Fig.14 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0095] Fig.15 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0096] Fig.16 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0097] Fig.17 One of the schematic diagrams of a torque compensation assembly according to one embodiment of the present invention is shown;

[0098] Fig.18 One of the schematic diagrams of an electrical device according to an embodiment of the present invention is shown.

[0099] in, Figures 1 to 18 The corresponding relationship between the reference numerals and component names in the figure is:

[0100] 100 torque compensation component, 110 first magnetic component, 112 first iron core, 114 first compensation component, 120 second magnetic component, 122 second iron core, 124 second compensation component, 200 electric component, 202 rotating shaft, 204 housing, 206 stator, 208 rotor, 210 cylinder. DETAILED DESCRIPTION

[0101] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0102] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0103] Refer to the following Figures 1 to 18 A torque compensation assembly, an electric assembly and an electrical device according to some embodiments of the present invention are described.

[0104] Embodiment 1:

[0105] The present invention provides a torque compensation component 100, which is used for an electric component 200. The electric component 200 includes a support member and a rotating shaft 202. The torque compensation component 100 includes: a first magnetic component 110, the first magnetic component 110 includes a first iron core 112 and a first compensation component 114, the first iron core 112 is connected to the support member, and the first compensation component 114 is annularly arranged along the circumference of the first iron core 112; a second magnetic component 120, the second magnetic component 120 includes a second iron core 122 and a second compensation component 124, the second iron core 122 is connected to the rotating shaft 202, and the second compensation component 124 is annularly arranged along the circumference of the second iron core 122; wherein the first compensation component 114 and the second compensation component 124 generate compensation torque through the action of a magnetic field.

[0106] like Figure 1 , Figure 2 and Figure 5As shown, in this embodiment, there is an air gap between the first magnetic component 110 and the second magnetic component 120, the first magnetic component 110 is connected to the support of the electric component 200, and the second magnetic component 120 is connected to the rotating shaft 202 of the electric component 200, so that when the electric component 200 is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component, thereby realizing the installation and fixation of the first magnetic component 110 and the second magnetic component 120. When the electric component 200 is working, the first compensation component 114 generates The static magnetic field interacts with the rotating magnetic field generated by the second compensation component 124 to generate a compensating torque, thereby realizing torque compensation through the structure of the electric component 200 itself, so that the output torque of the electric component 200 can change with the gas compression process of the electric component 200, thereby avoiding the torque imbalance of the electric component 200, reducing the speed fluctuation of the electric component 200, and thus reducing vibration and noise. Especially when the electric component 200 works at low frequency and low speed, the speed fluctuation of the electric component 200 can be better reduced, and vibration and noise can be reduced, thereby improving the low-frequency performance of the electric component 200.

[0107] In addition, the single-cylinder electric component 200 has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. Especially when the electric component 200 is a single-cylinder compressor, since the load torque fluctuation of the single-cylinder compressor is large, if torque compensation is not performed, there will be obvious speed fluctuation problems, generating vibration and noise and reducing reliability, which will seriously affect the low-frequency performance of the single-cylinder compressor. The present application compensates the torque of the compressor through the torque compensation component 100, thereby better reducing the speed fluctuation, as well as reducing vibration and noise, and improving the low-frequency performance of the single-cylinder compressor.

[0108] Moreover, compared with the conventional method of generating compensation torque by regulating the motor current through electronic control, there is no need to introduce additional compensation current, nor will it cause a decrease in the efficiency of the electric drive system, and the required torque compensation can be met.

[0109] The first magnetic component 110 contains a first compensation component, and the pole pair number of the first compensation component in the first magnetic component 110 is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component 120 contains a second compensation component, and the pole pair number of the second compensation component in the second magnetic component 120 is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component 110 and the second magnetic component 120 interact with each other to form a compensation torque. For every rotation of the electric component 200, the fundamental wave period number of the compensation torque is 1.

[0110] Specifically, the first magnetic component 110 forms a static magnetic field distribution in the air gap, and the second magnetic component 120 forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the electric component 200 is running, the static magnetic field distribution generated by the first magnetic component 110 interacts with the rotating magnetic field distribution generated by the second magnetic component 120, and the pole pairs of both are 1, satisfying the condition that the pole pairs of the magnetic field are equal, thereby forming a torque effect. Since the above-mentioned static magnetic field distribution and the rotating magnetic field distribution have relative motion, the torque generated is not a constant value, but an alternating torque with a periodic change in direction and magnitude, and the alternating period is equal to the mechanical period of the operation of the electric component 200 divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component 200.

[0111] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component 110 and the second magnetic component 120 in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux paths are closed in a plane orthogonal to the rotating shaft 202 .

[0112] The arrangement of the first magnetic component 110 and the second magnetic component 120 is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are both 1. The arrangement of the first magnetic component 110 and the second magnetic component 120 includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0113] When the electric component is running, the static magnetic field distribution generated in the first magnetic component 110 interacts with the rotating magnetic field distribution generated by the second magnetic component 120 to form a compensation torque.

[0114] exist Figure 5 In the figure, N·m represents the unit of torque and compensation torque, which is Newton meter.

[0115] Embodiment 2:

[0116] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0117] The first magnetic component 110 is sleeved on the outside of the second magnetic component 120 .

[0118] like Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, the first magnetic component 110 is arranged outside the second magnetic component 120, so that the structure is not arranged on the stator 206 component and the rotor 208 component of the electric component 200, and thus will not affect the function of the electric component 200, and can generate a compensating torque when the electric component 200 is running.

[0119] Embodiment three:

[0120] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0121] The first core 112 is ring-shaped, and the first compensation component 114 is disposed along the inner wall of the first core 112 ; the second compensation component 124 is disposed along the outer wall of the second core 122 ; and there is a gap between the first compensation component 114 and the second compensation component 124 .

[0122] like Figure 2 , Figure 3 and Figure 4 As shown, in this embodiment, the first core 112 is annular, so that the first core can also be mounted on the outside of the second compensation component 124, and the first compensation component 114 is arranged on the inner wall of the first core 112, and the second compensation component 124 is arranged on the outer wall of the second core 122, so as to realize the installation and fixation of the first compensation component 114 and the second compensation component 124. Since there is a gap between the first compensation component 114 and the second compensation component 124, the first compensation component 114 can form a static magnetic field distribution in the air gap, and the second compensation component 124 can form a rotating magnetic field distribution in the air gap.

[0123] Specifically, the first permanent magnetic component 110 and the second permanent magnetic component 120 both include two tile-shaped magnetic poles, and use opposite magnetizing directions to realize two polarities of N and S. The magnetizing method is radial radiation magnetizing or radial parallel magnetizing, etc., referring to the permanent magnet magnetizing method of ordinary surface-mounted permanent magnet motors.

[0124] Optionally, the first magnetic assembly 110 and the second magnetic assembly 120 are composed of a plurality of first compensation components and a plurality of second compensation components that are assembled in a circumferential direction, thereby reducing the size of a single first compensation component and a single second compensation component. Based on this first compensation component and a second compensation component assembly scheme, each single first compensation component and a second compensation component can be designed to have different sizes to meet the requirements of the magnetic field harmonic structure.

[0125] Embodiment 4:

[0126] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0127] The first magnetic assembly 110 and the second magnetic assembly 120 are disposed along the axial direction of the rotating shaft 202 .

[0128] like Fig.11 , Fig.12 and Fig.13 As shown, in this embodiment, the first magnetic component 110 and the second magnetic component 120 can also be arranged axially along the rotating shaft 202 of the electric component 200, so that the first magnetic component 110 and the second magnetic component 120 can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0129] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0130] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both axial, and the magnetic flux path is closed in a curved surface parallel to the rotating shaft 202 .

[0131] Embodiment five:

[0132] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0133] The first core 112 is disc-shaped or ring-shaped, and the first compensation component 114 is arranged on at least one side of the first core 112 in the axial direction; the second core 122 is disc-shaped or ring-shaped, and the second compensation component 124 is arranged on at least one side of the second core 122 in the axial direction, and is arranged opposite to the first compensation component 114; there is a gap between the first compensation component 114 and the second compensation component 124.

[0134] like Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15As shown, in this embodiment, the first compensation component 114 is arranged on at least one side of the first core 112 in the axial direction, and the second compensation component 124 is arranged on at least one side of the second core 122 in the axial direction, opposite to the first compensation component 114, and there is a gap between the first compensation component 114 and the second compensation component 124.

[0135] Specifically, when the second compensation component 124 is disposed between two first compensation components 114 , the second compensation component 124 is disposed on both sides of the second core 122 , and the first compensation component 114 is disposed on one side of the first core 112 .

[0136] Specifically, when the first compensation component 114 is disposed between two second compensation components 124 , the first compensation component 114 is disposed on both sides of the first core 112 , and the second compensation component 124 is disposed on one side of the second core 122 .

[0137] Embodiment six:

[0138] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0139] There are multiple second compensation components 124 , which are respectively disposed on both sides of the second core 122 in the axial direction; there are two groups of first magnetic components 110 , which are respectively disposed on both sides of the second magnetic component 120 in the axial direction.

[0140] like Fig.16 As shown, in this embodiment, the first magnetic component 110 is two groups, which are arranged on both sides of the second magnetic component 120 in the axial direction, and the second compensation component can be multiple, which are arranged on both sides of the second core 122 in the axial direction, so that multiple second compensation components 124 can be arranged between the two groups of first magnetic components 110 to form an axial composite structure, thereby forming a new second air gap between the first magnetic component 110 and the second magnetic component 120, so that the pole pair number of the first magnetic component of the newly added axial composite section is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap. The pole pair number of the other side of the second magnetic component is 1, arranged alternately with N and S polarities, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap.

[0141] Specifically, there is one second compensation component 124 , which is disposed on both sides of the second core 122 in the axial direction; there are two groups of first magnetic components 110 , which are disposed on both sides of the second magnetic component 120 in the axial direction.

[0142] Specifically, there are two second compensation components 124 , which are respectively disposed on both sides of the second core 122 in the axial direction; there are two groups of first magnetic components 110 , which are respectively disposed on both sides of the second magnetic component 120 in the axial direction.

[0143] Embodiment seven:

[0144] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0145] There are multiple first compensation components 114 , which are respectively disposed on both sides of the first core 112 in the axial direction. There are two groups of second magnetic components 120 , which are respectively disposed on both sides of the first magnetic component 110 in the axial direction.

[0146] like Fig.17 As shown, in this embodiment, the number of the second magnetic components 120 is two groups, which are arranged on both sides of the first magnetic component 110 in the axial direction. The number of the first compensation components 114 can be multiple, which are respectively arranged on both sides of the first core 112 in the axial direction, and an axial composite structure can also be formed, so that a new second air gap is formed between the first magnetic component 110 and the second magnetic component 120, so that the pole pair number of the first magnetic component of the newly added axial composite section is 1, and the N and S polarities are alternately arranged, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap. The pole pair number on the other side of the second magnetic component is 1, and the N and S polarities are alternately arranged, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the second air gap.

[0147] Specifically, there is one first compensation component 114 , which is disposed on both sides of the first core 112 in the axial direction; there are two groups of second magnetic components 120 , which are disposed on both sides of the first magnetic component 110 in the axial direction.

[0148] Specifically, there are two first compensation components 114 , which are respectively disposed on both sides of the first core 112 in the axial direction; there are two groups of second magnetic components 120 , which are respectively disposed on both sides of the first magnetic component 110 in the axial direction.

[0149] Embodiment eight:

[0150] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0151] The first compensation component 114 includes at least two groups of first magnetic components, which are spaced apart circumferentially along the first core 112 ; the second compensation component 124 includes at least two groups of second magnetic components, which are spaced apart circumferentially along the second core 122 .

[0152] like Figure 6 and Figure 7 As shown, in this embodiment, the first compensation component 114 is composed of at least two groups of first magnetic components, which are arranged at intervals along the circumference of the first core 112. Similarly, the second compensation component 124 is composed of at least two groups of second magnetic components, which are arranged at intervals along the circumference of the second core 122. Such an arrangement can be achieved by arranging at least two groups of first compensation components 114 and two groups of second compensation components during the operation of the electric component 200, so that when the electric component 200 inhales and exhausts gas, the static magnetic field generated by the first compensation component 114 interacts with the rotating magnetic field generated by the second compensation component 124 to generate a compensation torque, thereby compensating the torque of the electric component 200.

[0153] Specifically, the magnetic directions of the two groups of first magnetic components are opposite. The magnetic direction of the two groups of first magnetic components is clockwise, that is, the first magnetic components of this group are magnetized in the clockwise direction, and the magnetic direction of the other group of first magnetic components is counterclockwise, that is, the first magnetic components of this group are magnetized in the counterclockwise direction.

[0154] 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 the two groups 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 group of the two groups of second magnetic components is from the outer wall of the second core to the axis of the second core.

[0155] Embodiment nine:

[0156] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0157] In this embodiment, each of the at least two groups of first magnetic components includes at least one first magnetic component; each of the at least two groups of second magnetic components includes at least one second magnetic component, so that during the operation of the electric component 200, the size of the compensation torque can be changed by changing the number of first magnetic components and the number of second magnetic components.

[0158] 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 components includes two second magnetic components, thereby forming a pole pair number of 1 in the first compensation component and the second compensation component, respectively, and arranged alternately with N and S polarities, and forming an air gap magnetic field distribution in the second air gap with a fundamental wave pole pair number of 1.

[0159] 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 components includes three second magnetic components, thereby forming a pole pair number of 1 in the first compensation component and the second compensation component, respectively, and arranged alternately with N and S polarities, and forming an air gap magnetic field distribution in the second air gap with a fundamental wave pole pair number of 1.

[0160] Embodiment ten:

[0161] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0162] The gap between the first compensation component 114 and the second compensation component 124 first decreases and then increases from one end to the other end.

[0163] like Figure 8 and Fig. 9 As shown, in this embodiment, by setting the gap between the first compensation component 114 and the second compensation component 124 to first decrease and then increase from one end to the other end, the air gap spacing between the first compensation component 114 and the second compensation component 124 is no longer uniform, thereby achieving optimization of the waveform of the compensation torque.

[0164] Specifically, the thickness of the second compensation component 124 is uniform, the thickness of the first compensation component 114 at both ends is smaller than the thickness in the middle of the first compensation component 114, and a gap is ensured between the first compensation component 114 and the second compensation component 124, so that the gap between the first compensation component 114 and the second compensation component 124 first decreases and then increases from one end to the other end.

[0165] Specifically, the thickness of the first compensation component 114 is uniform, the thickness of the second compensation component 124 at both ends is smaller than the thickness in the middle of the second compensation component 124, and a gap is ensured between the first compensation component 114 and the second compensation component 124, so that the gap between the first compensation component 114 and the second compensation component 124 first decreases and then increases from one end to the other end.

[0166] Embodiment eleven:

[0167] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0168] The axial length of the first magnetic component 110 is not equal to the axial length of the second magnetic component 120 ; and / or the diameter of the first magnetic component 110 is not equal to the diameter of the second magnetic component 120 .

[0169] like Figure 3 As shown, in this embodiment, the axial length of the first magnetic component 110 is not equal to the axial length of the second magnetic component 120; the diameter of the first magnetic component 110 is not equal to the diameter of the second magnetic component 120, so that the first magnetic component 110 and the second magnetic component 120 can stably generate compensation torque when the electric component 200 is running.

[0170] Embodiment 12:

[0171] This embodiment provides a torque compensation assembly 100. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features.

[0172] The first magnetic component 110 further includes a through hole, which is disposed on the first core and passes through the first core 112 in the axial direction; and or the second magnetic component 120 also includes a through hole, which is disposed on the second core 122 and passes through the second core 122 in the axial direction.

[0173] In this embodiment, a flow hole is provided on the first core 112 of the first magnetic component 110 and penetrates the first core 112 in the axial direction. A flow hole is provided on the second core 122 of the second magnetic component 120 and penetrates the second core 122 in the axial direction, so that the electric component 200 can discharge the compressed gas through the flow hole on the first core 112.

[0174] Specifically, when there are multiple groups of first compensation components 114 in the first magnetic component 110, each first core 112 has a flow hole, and when there are multiple groups of second compensation components 124 in the second magnetic component 120, each second core 122 also has a flow hole.

[0175] Embodiment 13:

[0176] This embodiment provides an electric component 200, including the above-mentioned torque compensation component 100, so the electric component 200 has all the beneficial effects of any of the above-mentioned embodiments.

[0177] like Fig.10As shown, in this embodiment, there is an air gap between the first magnetic component 110 and the second magnetic component 120, the first magnetic component 110 is connected to the support of the electric component 200, and the second magnetic component 120 is connected to the rotating shaft 202 of the electric component 200, so that when the electric component 200 is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component, thereby realizing the installation and fixation of the first magnetic component 110 and the second magnetic component 120. When the electric component 200 is working, the first compensation component 114 generates The static magnetic field interacts with the rotating magnetic field generated by the second compensation component 124 to generate a compensating torque, thereby realizing torque compensation through the structure of the electric component 200 itself, so that the output torque of the electric component 200 can change with the gas compression process of the electric component 200, thereby avoiding the torque imbalance of the electric component 200, reducing the speed fluctuation of the electric component 200, and thus reducing vibration and noise. Especially when the electric component 200 works at low frequency and low speed, the speed fluctuation of the electric component 200 can be better reduced, and vibration and noise can be reduced, thereby improving the low-frequency performance of the electric component 200.

[0178] In addition, the single-cylinder electric component 200 has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. Especially when the electric component 200 is a single-cylinder compressor, since the load torque fluctuation of the single-cylinder compressor 200 is large, if torque compensation is not performed, there will be obvious speed fluctuation problems, generating vibration and noise and reducing reliability, seriously affecting the low-frequency performance of the single-cylinder compressor. The present application compensates the torque of the single-cylinder compressor through the torque compensation component 100, thereby better reducing the speed fluctuation, as well as reducing vibration and noise, and improving the low-frequency performance of the single-cylinder compressor.

[0179] Moreover, compared with the conventional method of generating compensation torque by regulating the motor current through electronic control, there is no need to introduce additional compensation current, nor will it cause a decrease in the efficiency of the electric drive system, and the required torque compensation can be met.

[0180] The first magnetic component contains a first compensation component, the pole pair number of the first compensation component in the first magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component contains a second compensation component, the pole pair number of the second compensation component in the second magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component and the second magnetic component interact with each other to form a compensation torque. For every rotation of the electric component 200, the fundamental wave period number of the compensation torque is 1.

[0181] Specifically, the first magnetic component forms a static magnetic field distribution in the air gap, and the second magnetic component forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the electric component 200 is running, the static magnetic field distribution generated by the first magnetic component interacts with the rotating magnetic field distribution generated by the second magnetic component, and the pole pairs of both are 1, satisfying the condition that the pole pairs of the magnetic field are equal, thereby forming a torque effect. Since there is relative motion between the above-mentioned static magnetic field distribution and the rotating magnetic field distribution, the torque generated is not a constant value, but an alternating torque with a periodic change in direction and magnitude, and the alternating period is equal to the mechanical period of the operation of the electric component 200 divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component 200.

[0182] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux path is closed in a plane orthogonal to the rotating shaft 202 .

[0183] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0184] like Fig.18 As shown, specifically, the first magnetic component 110 and the second magnetic component 120 can also be arranged along the axial direction of the rotating shaft 202 of the electric component 200, so that the first magnetic component 110 and the second magnetic component 120 can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0185] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0186] Specifically, the magnetic flux direction of the magnetic field generated by the first magnetic component and the second magnetic component in the air gap is axial, which is similar to the magnetic flux direction of the air gap magnetic field of a conventional axial flux structure permanent magnet motor (disc motor), and the magnetic flux path is closed in a curved surface parallel to the rotating shaft 202.

[0187] Embodiment 14:

[0188] This embodiment provides an electric component 200, including the above-mentioned torque compensation component 100, so the electric component 200 has all the beneficial effects of any of the above-mentioned embodiments.

[0189] The supporting member is a shell 204, and the electric component 200 also includes: a stator 206, which is arranged in the shell 204 and connected to the shell 204; a rotor 208, which is inserted in the stator 206, and the rotating shaft 202 is inserted in the rotor 208; a cylinder 210, which includes a cylinder body and a piston, the cylinder body is connected to the shell 204, and the piston is connected to the rotating shaft 202.

[0190] like Figure 1 and Fig.11 As shown, in this embodiment, the stator 206 is arranged in the shell 204 and connected to the shell 204, the rotor 208 is inserted in the stator 206, and the rotating shaft 202 is inserted in the rotor 208; the cylinder 210 includes a cylinder body and a piston, the cylinder body is connected to the shell 204, and the piston is connected to the rotating shaft 202, thereby realizing the installation and fixation of the stator 206, the rotor 208 and the rotating shaft 202. When the electric component 200 is running, the stator 206 and the rotor 208 generate torque according to the principle of a permanent magnet synchronous motor, thereby providing initial power for the cylinder of the electric component 200 to drive the piston to rotate and compress the gas.

[0191] Embodiment 15:

[0192] This embodiment provides an electrical device, including the above-mentioned electric component 200, so the electrical device has all the beneficial effects of any of the above-mentioned embodiments.

[0193] like Fig.10As shown, there is an air gap between the first magnetic component 110 and the second magnetic component 120, the first magnetic component 110 is connected to the support of the electric component 200, and the second magnetic component 120 is connected to the rotating shaft 202 of the electric component 200, so that when the electric component 200 is working, the electric component drives the piston to rotate and compress the gas, and the second magnetic component also rotates synchronously and rotates relative to the first magnetic component, thereby realizing the installation and fixation of the first magnetic component 110 and the second magnetic component 120. When the electric component 200 is working, the static compensation component 114 generated by the first compensation component 114 The magnetic field interacts with the rotating magnetic field generated by the second compensation component 124 to generate a compensating torque, thereby realizing torque compensation through the structure of the electric component 200 itself, so that the output torque of the electric component 200 can change with the gas compression process of the electric component 200, thereby avoiding the torque imbalance of the electric component 200, reducing the speed fluctuation of the electric component 200, and thus reducing vibration and noise. Especially when the electric component 200 works at low frequency and low speed, the speed fluctuation of the electric component 200 can be better reduced, and vibration and noise can be reduced, thereby improving the low-frequency performance of the electric component 200.

[0194] In addition, the single-cylinder electric component 200 has the advantages of simple structure and low cost, and can be widely used in refrigeration equipment such as air conditioners and refrigerators. In particular, when the electric component 200 is a single-cylinder compressor, due to the large load torque fluctuation of the single-cylinder compressor, if torque compensation is not performed, there will be obvious speed fluctuation problems, vibration and noise will be generated, and reliability will be reduced, which will seriously affect the low-frequency performance of the single-cylinder compressor. The present application compensates the torque of the compressor through the torque compensation component 100, thereby better reducing speed fluctuations, vibration and noise, and improving the low-frequency performance of the single-cylinder compressor. In addition, compared with the conventional method of generating compensation torque by adjusting the motor current through electronic control, there is no need to introduce additional compensation current, and the efficiency of the electric drive system will not be reduced, and the required torque compensation can be met.

[0195] The first magnetic component contains a first compensation component, the pole pair number of the first compensation component in the first magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The second magnetic component contains a second compensation component, the pole pair number of the second compensation component in the second magnetic component is 1 (the pole number is 2), and the N and S polarities are arranged alternately, and an air gap magnetic field distribution with a fundamental wave pole pair number of 1 is formed in the air gap. The magnetic fields generated by the first magnetic component and the second magnetic component interact with each other to form a compensation torque. For every rotation of the electric component 200, the fundamental wave period number of the compensation torque is 1.

[0196] Specifically, the first magnetic component forms a static magnetic field distribution in the air gap, and the second magnetic component forms a rotating magnetic field distribution in the air gap and rotates synchronously with the second magnetic component. When the electric component 200 is running, the static magnetic field distribution generated by the first magnetic component interacts with the rotating magnetic field distribution generated by the second magnetic component, and the pole pairs of both are 1, satisfying the condition that the pole pairs of the magnetic field are equal, thereby forming a torque effect. Since there is relative motion between the above-mentioned static magnetic field distribution and the rotating magnetic field distribution, the torque generated is not a constant value, but an alternating torque with a periodic change in direction and magnitude, and the alternating period is equal to the mechanical period of the operation of the electric component 200 divided by the number of magnetic field pole pairs. Therefore, the number of cycles of the compensation torque is 1 for each rotation of the electric component 200.

[0197] Specifically, the magnetic flux directions of the magnetic fields generated by the first magnetic component and the second magnetic component in the air gap are both radial, similar to the magnetic flux directions of the air gap magnetic fields of conventional radial flux structure permanent magnet motors, and the magnetic flux path is closed in a plane orthogonal to the rotating shaft 202 .

[0198] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0199] like Fig.18 As shown, specifically, the first magnetic component 110 and the second magnetic component 120 can also be arranged along the axial direction of the rotating shaft 202 of the electric component 200, so that the first magnetic component 110 and the second magnetic component 120 can generate a static magnetic field and a rotating magnetic field in the axial direction.

[0200] The arrangement of the first magnetic component and the second magnetic component is flexible and diverse, and it is only necessary to ensure that the fundamental wave pole pairs of the magnetic field distribution generated in the air gap are 1. The arrangement of the first magnetic component and the second magnetic component includes but is not limited to a coreless structure, a Halbach array structure, a surface-mounted structure in which the first compensation component and the second compensation component are mounted on the surface of the core, and a built-in structure in which the first compensation component and the second compensation component are mounted in the core slot, that is, the permanent magnet arrangement of conventional permanent magnet motors can be easily transplanted and used.

[0201] Specifically, the magnetic flux direction of the magnetic field generated by the first magnetic component and the second magnetic component in the air gap is axial, which is similar to the magnetic flux direction of the air gap magnetic field of a conventional axial flux structure permanent magnet motor (disc motor), and the magnetic flux path is closed in a curved surface parallel to the rotating shaft 202.

[0202] In the claims, specification and drawings of the present invention, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, which is only for the purpose of more conveniently describing the present invention and making the description process simpler, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limiting the present invention; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances of the above data.

[0203] In the claims, specification and drawings of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0204] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A torque compensation component, characterized in that: The torque compensation assembly is used for an electric assembly, the electric assembly includes a support and a rotating shaft, and the torque compensation assembly includes: A first magnetic component, the first magnetic component comprising a first core and a first compensation component, the first core is connected to the support member, and the first compensation component is annularly arranged along the circumference of the first core; a second magnetic component, the second magnetic component comprising a second core and a second compensation component, the second core is connected to the rotating shaft, and the second compensation component is annularly arranged along the circumference of the second core; Wherein, the first compensation component and the second compensation component generate compensation torque through the action of magnetic field; The first magnetic component and the second magnetic component are arranged along the axial direction of the rotating shaft; The first core is in a disc or ring shape, and the first compensation component is arranged on at least one side of the first core in the axial direction; The second core is in a disc or ring shape, and the second compensation component is arranged on at least one side of the second core in the axial direction and is arranged opposite to the first compensation component; There is a gap between the first compensating component and the second compensating component; The gap between the first compensation component and the second compensation component first decreases and then increases from one end to the other end, and the thickness at both ends of the first compensation component is smaller than the thickness in the middle of the first compensation component, or the thickness at both ends of the second compensation component is smaller than the thickness in the middle of the second compensation component.

2. The torque compensation assembly according to claim 1, characterized in that: There are multiple second compensation components, which are respectively arranged on both sides of the second core in the axial direction; The number of the first magnetic components is two, which are respectively arranged on two sides of the second magnetic component in the axial direction.

3. The torque compensation assembly according to claim 1, characterized in that: There are multiple first compensation components, which are respectively arranged on both sides of the first core in the axial direction; The number of the second magnetic components is two, and they are respectively arranged on two sides of the first magnetic component in the axial direction.

4. The torque compensation assembly according to any one of claims 1 to 3, characterized in that: The first compensation component includes at least two groups of first magnetic components, and the at least two groups of first magnetic components are arranged at intervals along the circumference of the first core; The second compensation component includes at least two groups of second magnetic components, and the at least two groups of second magnetic components are arranged at intervals along the circumferential direction of the second core.

5. The torque compensation assembly according to claim 4, characterized in that: Each of the at least two groups of first magnetic components comprises at least one first magnetic component; and / or Each of the at least two groups of second magnetic components includes at least one second magnetic component.

6. The torque compensation assembly according to any one of claims 1 to 3, characterized in that: 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.

7. The torque compensation assembly according to any one of claims 1 to 3, characterized in that: The first magnetic component further includes a through hole, wherein the through hole is arranged on the first core and penetrates the first core in an axial direction; and / or The second magnetic component further includes a through hole, which is disposed on the second core and penetrates the second core in an axial direction.

8. An electric component, characterized in that: Comprising a torque compensation assembly as claimed in any one of claims 1 to 7.

9. The electric component according to claim 8, characterized in that: The support member is a housing, and the electric assembly further comprises: A stator, the stator is disposed in the housing and connected to the housing; A rotor, wherein the rotor is inserted in the stator, and the rotating shaft is inserted in the rotor; The cylinder comprises a cylinder body and a piston, wherein the cylinder body is connected to the housing, and the piston is connected to the rotating shaft.

10. An electrical device, characterized in that: Comprising the electric assembly as claimed in claim 8 or 9.

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