WO2019242218A1 - 转子、电机和压缩机 - Google Patents
转子、电机和压缩机 Download PDFInfo
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- WO2019242218A1 WO2019242218A1 PCT/CN2018/115714 CN2018115714W WO2019242218A1 WO 2019242218 A1 WO2019242218 A1 WO 2019242218A1 CN 2018115714 W CN2018115714 W CN 2018115714W WO 2019242218 A1 WO2019242218 A1 WO 2019242218A1
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- Prior art keywords
- punches
- rotor
- punch
- pole
- sub
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Definitions
- the invention relates to the field of compressors, in particular to a rotor, a motor and a compressor.
- the motor In the existing rotary DC variable frequency compressor using a motor, the motor generally uses a built-in permanent magnet motor. Due to the existence of a magnetic bridge in the rotor core, this rotor structure has a large magnetic leakage. By reducing the width of the magnetic isolation bridge, the magnetic leakage can be reduced and the motor performance can be improved. However, if the width of the magnetic isolation bridge is too small, the mechanical strength of the rotor will be weakened, and the rotor core will be deformed at high speed, which will degrade the performance. In more serious cases, the chamber will be blown, the stator and the rotor will collide, and the compressor pump body Stuck, the motor is blocked, resulting in winding damage. Therefore, this type of motor has a design contradiction between the improvement of operating performance and the guarantee of mechanical strength.
- the magnet of the traditional built-in permanent magnet motor is set inside the rotor core, under a load condition, the armature reacts strongly, especially when the motor is in a weak field condition or even a short circuit condition, which makes the motor easy to demagnetize.
- the present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.
- a first aspect of the invention is to propose a rotor.
- a second aspect of the present invention is to provide a rotor.
- a third aspect of the present invention is to provide a rotor.
- a fourth aspect of the present invention is to provide a motor.
- a fifth aspect of the present invention is to provide a compressor.
- a rotor for a motor which includes a plurality of first punches and a plurality of second punches, a plurality of first punches and a plurality of second punches.
- the punches are stacked to form a rotor core; a plurality of openings are circumferentially provided on each of the plurality of first punches and the plurality of second punches, and the plurality of openings connect the plurality of first punches and the plurality of second punches.
- the punching piece is divided into a rotor yoke and a plurality of pole crowns.
- the plurality of pole crowns are surrounded on the outer periphery of the rotor yoke.
- a plurality of openings penetrate through the rotor core in the axial direction to form a plurality of slots.
- a rotor for a motor which includes a plurality of first punches and a plurality of second punches, and the plurality of first punches and the plurality of second punches are stacked to A rotor core is formed; a plurality of openings are circumferentially provided on each of a plurality of first punches and a plurality of second punches, and the plurality of openings divide the plurality of first punches and the plurality of second punches into Rotor yoke and multiple pole crowns.
- the multiple pole crowns surround the outer periphery of the rotor yoke. Multiple openings penetrate through the rotor core in the axial direction to form multiple slots.
- each of the plurality of first punches includes at least one connecting rib, and any one of the at least one connecting rib is disposed between adjacent two of the plurality of polar crowns, and a plurality of the first punches
- the openings are not connected to each other, and at least two of the plurality of openings in each of the plurality of second punches are in communication.
- the rotor provided by the present invention includes a plurality of first punches, a plurality of second punches, a plurality of openings, and a plurality of magnets.
- the plurality of first punches and the plurality of second punches are stacked to form a rotor core.
- the openings are circumferentially provided on each of the plurality of first punches and the second punches.
- the plurality of openings divide the first punches and the second punches into a rotor yoke and a plurality of pole crowns.
- a plurality of openings pass through in the axial direction of the rotor core to form a plurality of slots, and a plurality of magnets are correspondingly arranged in the plurality of slots, preferably, the magnets are in a sheet shape or an arc shape
- the magnet is adapted to the slot, and each of the plurality of first punches includes at least one connection rib, and any one of the at least one connection rib is disposed between adjacent two of the plurality of pole crowns, preferably
- the connecting rib is connected to the rotor yoke, and the plurality of openings of the first punching piece are not connected to each other.
- At least two openings of the plurality of openings of each of the plurality of second punching pieces are connected to each other. Magnets of different polarities are alternately arranged in the openings.
- the first punch provided with connecting ribs provided by the present invention The mechanical strength of the plate is high, thereby preventing the rotor core from being deformed during high-speed rotation and affecting the performance of the motor.
- the magnets of different polarities are connected through The open openings communicate with each other, effectively reducing the magnetic flux leakage of the rotor, increasing the air gap magnetic density amplitude, reducing the copper loss, and improving the performance of the motor.
- the rotor in the above technical solution provided by the present invention may also have the following additional technical features:
- the minimum radial thickness of the connecting ribs of the first punch is W1; each of the plurality of second punches includes at least one connecting rib, and any one of the at least one connecting rib is disposed on Between adjacent two of the plurality of polar crowns, the minimum radial thickness of the connecting ribs of the second punch is W2, and satisfies 0.2 ⁇ W2 / W1 ⁇ 2.
- the minimum radial thickness of the connecting ribs of the first punch is W1
- each of the second punches includes at least one connecting rib, and any one of the at least one connecting rib is provided on a plurality of polar crowns.
- the minimum radial thickness of the connecting ribs of the second punch is W2.
- adjacent two of the plurality of pole crowns in the second punch are not connected to each other.
- adjacent two of the plurality of pole crowns of the second punch are not connected to each other, that is, the second punch does not have a connecting rib, which can effectively remove part of the magnetic bridge in the axial direction of the rotor core and reduce
- the strength of the armature reaction is effectively improved, and the anti-demagnetization ability of the motor is effectively improved.
- a rotor for a motor.
- the rotor includes a plurality of first punches, a plurality of second punches, a plurality of openings, and a plurality of magnets, a plurality of first punches, and A plurality of second punches are stacked to form a rotor core.
- a plurality of openings are circumferentially provided on each of the plurality of first punches and the plurality of second punches. The plurality of openings connect the first punch and the second punch.
- the punching piece is divided into a rotor yoke and a plurality of pole crowns.
- each of the plurality of first punches includes at least one connecting rib, and any one of the at least one connecting rib is disposed between adjacent two of the plurality of polar crowns, and the second punch Adjacent two of the multiple pole crowns in the sheet are not connected to each other.
- the rotor provided by the present invention includes a plurality of first punches, a plurality of second punches, a plurality of openings, and a plurality of magnets.
- the plurality of first punches and the plurality of second punches are stacked to form a rotor core.
- the openings are circumferentially provided on each of the plurality of first punches and the second punches.
- the plurality of openings divide the first punches and the second punches into a rotor yoke and a plurality of pole crowns.
- a plurality of openings pass through in the axial direction of the rotor core to form a plurality of slots, and a plurality of magnets are correspondingly arranged in the plurality of slots.
- the magnets are in the shape of a sheet or an arc.
- the magnet is adapted to the slot, and each of the plurality of first punches includes at least one connection rib, and any one of the at least one connection rib is disposed between adjacent two of the plurality of pole crowns, preferably The connecting rib is connected to the rotor yoke, and adjacent two of the plurality of pole crowns in the second punching piece are not connected to each other.
- the rotor core of the present invention is composed of a first punching piece including at least one connecting rib and no connecting rib.
- the second punch is formed by stacking.
- the connecting rib can ensure the mechanical strength of the first punch and avoid the rotor core. Deformation during high-speed rotation affects the performance of the motor. Since adjacent two of the multiple pole crowns of the second punch are not connected to each other, that is, the second punch does not have a connecting rib, it can effectively remove the rotor core in the axial direction. Part of the magnetic bridge reduces the reaction strength of the armature and effectively improves the anti-demagnetization ability of the motor.
- the present invention can effectively reduce the magnetic flux leakage of the rotor and increase the air gap magnetic density amplitude by using the first punch and the second punch with different structures. , Reduce copper consumption and improve motor performance.
- the plurality of first punches include a plurality of first sub punches and a plurality of second sub punches, and a plurality of polar crowns of each of the plurality of first sub punches.
- a connecting rib is provided between each two adjacent ones of the two; each of the plurality of polar crowns of each of the plurality of second sub punches is a first polar crown, and one end of the first polar crown is connected to Adjacent pole crowns are connected, and the other end of the first pole crown is not connected to the adjacent pole crowns; the second punch is sandwiched between the first sub punches; and / or the second sub punch is sandwiched between the first sub punches Between the sub punch pieces; and / or the second punch piece is sandwiched between the second sub punch pieces.
- the plurality of first punches includes a plurality of first sub punches and a plurality of second sub punches, wherein adjacent ones of the plurality of polar crowns of each of the plurality of first sub punches are There are connecting ribs between the two, that is, the two-pole crowns on the first sub punch are connected by connecting ribs, thereby ensuring the mechanical strength of the first punch, and preventing the rotor core from deforming during high-speed rotation and affecting the motor.
- each of the plurality of polar crowns of each of the plurality of second sub punches is a first polar crown, one end of the first polar crown is connected to an adjacent polar crown through a connecting rib, and the other of the first polar crown is One end is not connected to the adjacent polar crown, that is, the second sub punch is provided with a connecting rib at intervals.
- Some of the polar crowns are connected by the connecting rib, and the other part of the crown is not connected to each other. Therefore, the second sub punch can be
- the role of the connecting ribs ensures its own mechanical strength, which prevents the rotor core from deforming during high-speed rotation and affects the performance of the motor.
- the rotor core shaft can be effectively removed
- the upward part of the magnetic bridge reduces the armature response With strength, effectively improve the anti-demagnetization ability of the motor.
- the second punch is sandwiched between the first sub punches; and / or the second punch is sandwiched between the first sub punches; and / or the second punch is sandwiched between the second sub punches
- the rotor core is formed by stacking the first sub punch, the second sub punch, and the second punch with different structures, and the first sub punch, the second sub punch, and the second punch are stacked. Diversified methods, which can effectively reduce rotor leakage, increase air gap magnetic density amplitude, reduce copper consumption, and improve motor performance.
- the projections of the connecting ribs of the plurality of second sub punches and the connecting ribs of the plurality of first sub punches on a plane perpendicular to the axial direction of the rotor core completely overlap.
- the projections of the connecting ribs of the plurality of second sub punches and the connecting ribs of the plurality of first sub punches on a plane perpendicular to the axial direction of the rotor core completely overlap, and the plurality of second sub punches
- the sheet includes the first type of the second sub punch and the second type of the second sub punch.
- the connection ribs of the second type of the second sub punch and the connection ribs of the second type of the second sub punch are perpendicular to the rotor core.
- the sum of the projections on the axial plane and the projections of the connecting ribs of the first sub punch on the plane perpendicular to the axial direction of the rotor core completely overlap, that is, the second sub punch of the first type and the second of the second type
- the sub punches are stacked out of position, and the connecting ribs of the second sub punch of the first type correspond to the area stacking of the second sub punches of the second type without the connecting ribs.
- the second punch is sandwiched between the first sub punches, and / or the second sub punch of the first type is sandwiched between the first sub punches, and / or the second sub punch is the second type.
- the rotor core is formed by stacking the first sub punch, the second sub punch of the first type, the second sub punch of the second type, and the second punch, and the first sub punch, the first The stacking methods of the second sub punch, the second sub punch, and the second punch are diversified, which can effectively reduce the magnetic flux leakage of the rotor, increase the air gap magnetic density amplitude, reduce the copper loss, and improve the performance of the motor.
- the stack thickness of the plurality of first sub punches is L1
- the sum of the stack thicknesses of the plurality of second punches and the plurality of second sub punches is L, and satisfies 0.0105 ( L1 + L) ⁇ L1 ⁇ 0.1 (L1 + L).
- the stack thickness of the plurality of first sub punches is L1
- the sum of the stack thicknesses of the plurality of second punches and the plurality of second sub punches is L, and satisfies 0.0105 (L1 + L) ⁇ L1 ⁇ 0.1 (L1 + L)
- the second punching piece can effectively reduce the intensity of the armature reaction, thereby improving the anti-demagnetization ability of the motor.
- a rivet hole or a riveting buckle is provided on each of the plurality of pole crowns of the first punching piece and the second punching piece, so that A plurality of first punches and a plurality of second punches are connected.
- a rivet hole or a riveting buckle is provided on each of the plurality of pole crowns of the first punching piece and the second punching piece, and the plurality of first punching pieces and multiple
- the two second punches can be connected through rivets provided on each pole crown, or rivet holes in each pole crown of the plurality of first punches and the plurality of second punches can be nailed through rivets to make multiple
- the first punches are connected to the plurality of second punches.
- the plurality of first punching pieces and the plurality of second punching pieces may also be connected by other fixing structures, as long as they do not depart from the design concept of the present invention, they all fall within the protection scope of the present invention.
- a rivet hole or a riveting buckle is provided on each of the plurality of pole crowns of the first punching piece and the second punching piece.
- the riveting buckle is located between two magnets of the same polarity among a plurality of magnets.
- a rivet hole or a riveting buckle is provided on each of the plurality of pole crowns of the first punching piece and the second punching piece, and the rivet hole or the riveting buckle is located on a plurality of pole crowns.
- a plurality of first punches and a plurality of second punches may be connected by a riveting buckle provided on each pole crown, or a plurality of first punches may be nailed through rivets.
- a rivet hole on each pole crown of the punching piece and the plurality of second punching pieces to connect the plurality of first punching pieces and the plurality of second punching pieces.
- the plurality of first punching pieces and the plurality of second punching pieces may also be connected by other fixing structures, as long as they do not depart from the design concept of the present invention, they all fall within the protection scope of the present invention.
- the rivet holes are circular, triangular, and hexagonal; and / or the shape of the riveting buckle is rectangular or circular.
- the rivet holes are circular, triangular, hexagonal, or other shapes; and / or the shape of the riveting buckle is rectangular, circular, or other shapes, which can be set on the polar crown according to actual needs, effectively improving the first Flexibility of mounting connection between one punch and second punch.
- the magnet is a straight magnet, a V-shaped magnet; and / or the magnet is a rare earth magnet, a ferrite magnet, or a mixed magnet of rare earth and ferrite.
- the magnet is a straight magnet, a V-shaped magnet, or other shape magnets.
- the magnet may be a radial and tangential hybrid structure, and the slot is adapted to the magnet; and / or the magnet is Rare earth magnets, ferrite magnets, or mixed magnets of rare earth and ferrite.
- the magnet can also be of other shapes, and the magnet can also be made of other materials. As long as the design concept of the present invention is satisfied, they all fall into the protection scope of the present invention .
- a motor which includes the rotor as described in any one of the above technical solutions, and therefore has all the beneficial effects of the rotor, which will not be repeated here.
- the motor further includes: a stator body, which is surrounded on the outside of the rotor; wherein the rated torque of the motor is T, the inner diameter of the stator body is Di, and the unit volume torque of the rotor is Is TPV and satisfies 5.18 ⁇ 10 -7 ⁇ T ⁇ Di -3 ⁇ TPV -1 ⁇ 1.17 ⁇ 10 -6 , 5kN ⁇ m ⁇ m -3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m -3 , the rated torque T
- the unit is N ⁇ m
- the unit of the inner diameter Di is mm
- the unit of the unit volume torque TPV is kN ⁇ m ⁇ m -3 .
- the motor further includes a stator body, which is surrounded on the outside of the rotor; wherein, the rated torque of the motor is T, the inner diameter of the stator body is Di, and the unit volume torque of the rotor is TPV, which meets 5.18 ⁇ 10 -7 range ⁇ T ⁇ Di -3 ⁇ TPV -1 ⁇ 1.17 ⁇ 10 -6, the torque per unit volume of TPV 5kN ⁇ m ⁇ m -3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m -3, by The range of the combination of the rated torque T of the motor, the inner diameter Di of the stator body, and the unit volume torque TPV of the rotor is limited, so that the motor can meet the power requirements of the compressor. In addition, for the motor using the rotor and the The compressor can effectively reduce the magnetic flux leakage of the rotor, increase the utilization of the permanent magnet, and improve the efficiency of the motor.
- the stator body further includes a plurality of stator convex teeth and a plurality of stator slots, and the plurality of stator convex teeth are provided on the inner side wall of the stator body toward the rotor, and each of the plurality of stator slots It is located between two adjacent ones of the stator teeth.
- the coil crosses one stator teeth and is located in the stator slot.
- the number of stator slots is Z
- the number of pole pairs of the rotor is P
- it satisfies Z / 2P 3/2 or 6/5 or 6/7 or 9/8 or 9/10.
- the stator body further includes a plurality of stator convex teeth and a plurality of stator slots.
- the plurality of stator convex teeth are provided on the inner side wall of the stator body toward the rotor, and each of the plurality of stator slots is provided on the stator body. Between two adjacent ones of the plurality of stator teeth, when the number of stator teeth crossed by one coil is one, that is, the coil is located in the stator slot, and the number of stator slots is limited by the number Z
- the proportional relationship with the number of pole pairs P of the rotor further limits the pole-slot coordination of the motor.
- the motor can be a 6-pole 9-slot motor, 4 6-pole motors, 8-pole 12-slot motors, 10-pole 9-slot motors, 10-pole 12-slot motors, 8-pole 9-slot motors, the above types of motors can effectively reduce rotor magnetic leakage, increase magnetic flux, and help improve motor efficiency.
- a compressor which includes a rotor or a motor described in any one of the above technical solutions, and therefore has all the beneficial effects of the rotor or the motor, which will not be repeated here.
- FIG. 1 is a schematic structural diagram of a rotor core of a rotor according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a first punch of a rotor according to an embodiment of the present invention
- FIG. 3 shows a partial enlarged view of the first punch in FIG. 2 at A according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram of a first punch of a rotor according to another embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a first punch of a rotor according to another embodiment of the present invention.
- FIG. 6 is a schematic structural diagram of a second punch of a rotor according to an embodiment of the present invention.
- FIG. 7 shows a partial enlarged view of the second punch piece at B in FIG. 6 according to an embodiment of the present invention
- FIG. 8 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 11 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 12 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 14 is a schematic structural diagram of a second punch of a rotor according to still another embodiment of the present invention.
- FIG. 15 is a schematic structural diagram of a rotor core of a rotor according to another embodiment of the present invention.
- FIG. 16 is a schematic structural diagram of a first sub punch of a rotor according to an embodiment of the present invention.
- FIG. 17 is a schematic structural diagram of a first sub punch of a rotor according to another embodiment of the present invention.
- FIG. 18 is a schematic structural diagram of a first sub punch of a rotor according to another embodiment of the present invention.
- FIG. 19 is a schematic structural diagram of a first sub punch of a rotor according to still another embodiment of the present invention.
- FIG. 20 is a schematic structural diagram of a first sub punch of a rotor according to another embodiment of the present invention.
- FIG. 21 is a schematic structural diagram of a second punch of a rotor according to an embodiment of the present invention.
- FIG. 22 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 23 is a schematic structural diagram of a second punch of a rotor according to another embodiment of the present invention.
- FIG. 24 is a schematic structural diagram of a second sub punch of a rotor according to an embodiment of the present invention.
- FIG. 25 is a schematic structural diagram of a second sub punch of a rotor according to another embodiment of the present invention.
- FIG. 26 is a schematic structural diagram of a compressor according to an embodiment of the present invention.
- FIG. 27 shows a back-EMF comparison diagram of an embodiment of the present invention and an embodiment in the related art
- FIG. 28 is a cost comparison diagram of an embodiment of the present invention and an embodiment in the related art.
- FIG. 29 shows a comparison diagram of the low-frequency efficiency of a motor according to an embodiment of the present invention and an embodiment in the related art
- FIG. 30 shows a comparison diagram of the low-frequency efficiency of a motor according to another embodiment of the present invention and an embodiment in the related art
- FIG. 31 shows a comparison diagram of the low-frequency efficiency of a motor according to still another embodiment of the present invention and an embodiment in the related art
- FIG. 32 shows a comparison diagram of the low-frequency efficiency of a motor according to still another embodiment of the present invention and an embodiment in the related art
- FIG. 33 is a cost comparison diagram of an embodiment of the present invention and an embodiment in the related art.
- FIG. 34 is a diagram showing the effect and cost comparison between an embodiment of the present invention and an embodiment in the related art.
- a rotor, a motor, and a compressor according to some embodiments of the present invention are described below with reference to FIGS. 1 to 26.
- a rotor for a motor 2 including a plurality of first punches 12 and a plurality of second punches 13, a plurality of first punches 12 and a plurality of second
- the punches 13 are stacked to form the rotor core 1; a plurality of openings 14 are circumferentially provided on each of the plurality of first punches 12 and the plurality of second punches 13, and the plurality of openings 14 punch a plurality of first punches.
- the blade 12 and the plurality of second punching pieces 13 are divided into a rotor yoke 15 and a plurality of pole crowns 16.
- the plurality of pole crowns 16 are surrounded on the outer periphery of the rotor yoke 15.
- a plurality of slots 19 are formed; a plurality of magnets 11 are correspondingly disposed in the plurality of slots 19 one by one; wherein each of the plurality of first punches 12 includes at least one connecting rib 17, Any one is disposed between two adjacent ones of the plurality of pole crowns 16, and at least two openings 14 of the plurality of openings 14 of each of the plurality of second punches 13 are in communication with each other.
- the rotor provided by the present invention includes a plurality of first punches 12, a plurality of second punches 13, a plurality of openings 14, and a plurality of magnets 11, a plurality of first punches 12 and a plurality of magnets 11.
- a plurality of second punches 13 are stacked to form the rotor core 1, and a plurality of openings 14 are circumferentially provided on each of the plurality of first punches 12 and the second punches 13.
- the plurality of openings 14 receive the first punches.
- the 12 and the second punch 13 are divided into a rotor yoke 15 and a plurality of pole crowns 16.
- the plurality of pole crowns 16 surrounds the outer periphery of the rotor yoke 15.
- a plurality of openings 14 penetrate through the rotor core 1 in the axial direction to form a plurality of pole crowns 16.
- Slots 19, and a plurality of magnets 11 are provided in the slots 19 one by one, preferably, the magnets 11 are in the shape of a sheet or a circular arc, the magnets 11 are matched with the slots 19, and the plurality of first punches 12
- Each of them includes at least one connecting rib 17, and any one of the at least one connecting rib 17 is disposed between adjacent two of the plurality of pole crowns 16.
- the connecting rib 17 is connected to the rotor yoke 15, and a plurality of At least two openings 14 of the plurality of openings 14 of each of the second punches 13 are communicated.
- magnets 11 of different polarities among the plurality of magnets 11 are alternately disposed in the openings 14.
- the first punching sheet 12 provided with the connecting ribs 17 has high mechanical strength, thereby preventing the rotor core 1 from being deformed during high-speed rotation and affecting the performance of the motor 2.
- At least two of the openings 14 communicate with each other, so that the magnets 11 of different polarities communicate through the communicating openings 14, effectively reducing the magnetic flux leakage of the rotor, increasing the air gap magnetic density amplitude, reducing the copper loss, and improving the performance of the motor 2. .
- a rotor for a motor 2 including a plurality of first punches 12 and a plurality of second punches 13, a plurality of first punches 12 and a plurality of second
- the punches 13 are stacked to form the rotor core 1; a plurality of openings 14 are circumferentially provided on each of the plurality of first punches 12 and the plurality of second punches 13, and the plurality of openings 14 punch a plurality of first punches.
- the blade 12 and the plurality of second punching pieces 13 are divided into a rotor yoke 15 and a plurality of pole crowns 16.
- the plurality of pole crowns 16 are surrounded on the outer periphery of the rotor yoke 15.
- a plurality of slots 19 are formed; a plurality of magnets 11 are correspondingly disposed in the plurality of slots 19 one by one; wherein each of the plurality of first punches 12 includes at least one connecting rib 17, Any one is disposed between two adjacent ones of the plurality of pole crowns 16, the plurality of openings 14 of the first punch 12 are not connected to each other, and the plurality of openings 14 of each of the plurality of second punches 13 are At least two openings 14 communicate.
- the rotor provided by the present invention includes a plurality of first punches 12, a plurality of second punches 13, a plurality of openings 14, and a plurality of magnets 11, a plurality of first punches 12 and a plurality of magnets 11.
- a plurality of second punches 13 are stacked to form the rotor core 1, and a plurality of openings 14 are circumferentially provided on each of the plurality of first punches 12 and the second punches 13.
- the plurality of openings 14 receive the first punches.
- the 12 and the second punch 13 are divided into a rotor yoke 15 and a plurality of pole crowns 16.
- the plurality of pole crowns 16 surrounds the outer periphery of the rotor yoke 15.
- a plurality of openings 14 penetrate through the rotor core 1 in the axial direction to form a plurality of pole crowns 16.
- Slots 19, and a plurality of magnets 11 are provided in the slots 19 one by one, preferably, the magnets 11 are in the shape of a sheet or a circular arc, the magnets 11 are matched with the slots 19, and the plurality of first punches 12
- Each of them includes at least one connecting rib 17, and any one of the at least one connecting rib 17 is disposed between adjacent two of the plurality of pole crowns 16.
- the connecting rib 17 is connected to the rotor yoke 15, and the first The plurality of openings 14 of one punch piece 12 are not connected to each other, and at least two of the plurality of openings 14 of each of the plurality of second punch pieces 13 are in communication with each other.
- the magnets 11 of the same polarity are alternately arranged in the openings 14.
- the first punch 12 provided with the connecting rib 17 provided by the present invention has high mechanical strength, thereby preventing the rotor core 1 from deforming during high-speed rotation and affecting the performance of the motor 2.
- each second punching piece 13 By communicating at least two openings 14 of the plurality of openings 14 on each second punching piece 13 so that the magnets 11 of different polarities are communicated through the communicating openings 14, effectively reducing the magnetic flux leakage of the rotor and increasing the air gap.
- the magnetic flux density reduces the copper consumption and improves the performance of the motor 2.
- the minimum radial thickness of the connecting ribs 17 of the first punching sheet 12 is W1; each of the plurality of second punching sheets 13 includes at least one connecting rib 17 and at least one connecting Any one of the ribs 17 is disposed between two adjacent ones of the plurality of pole crowns 16.
- the minimum radial thickness of the connecting ribs 17 of the second punch 13 is W2 and satisfies 0.2 ⁇ W2 / W1 ⁇ 2.
- the minimum radial thickness of the connecting ribs 17 of the first punch 12 is W1
- each of the second punches 13 includes at least one connecting rib 17, at least Any one of the connecting ribs 17 is disposed between two adjacent ones of the plurality of pole crowns 16.
- the minimum radial thickness of the connecting ribs 17 of the second punch 13 is W2.
- FIG. 32 shows that in the fourth embodiment, the second punch 13 is used for 2/3 of the axial length, and the first punch 12 is used for 1/3 of the axial length.
- W2 / W1 0.6
- the low-frequency efficiency of this embodiment 4 is improved by 0.25 compared with the conventional example;
- FIG. 34 shows a comparison of the effect difference and the cost difference between the embodiment of the present invention and the related art.
- the figure shows that under the condition that the efficiency of the motor is not greatly affected, the amount of the magnet in the embodiment of the present invention can be reduced by 3.7% to 15.9%, when the amount of magnets in the embodiment of the present invention is reduced by 3.7% compared with the related art, the difference in motor efficiency is 0.31%, and the cost can be reduced by 1.7 yuan; when the amount of magnets in the embodiment of the present invention is reduced by 4.7% compared to the related art When the efficiency difference of the motor is 0.27%, the cost can be reduced by 2.1 yuan; when the amount of magnets used in the embodiment of the present invention is reduced by 6.5% compared to the related art, the difference in the efficiency of the motor is 0.24%, and the cost can be reduced by 2.9 yuan; When the amount of magnets in the embodiment is reduced by 9.4% compared to the related art, the difference in motor efficiency is 0.18%, and the cost can be reduced by 4.2 yuan. When the amount of magnets in the embodiment of the present invention is reduced by 15.9%
- two adjacent ones of the plurality of pole crowns 16 in the second punch 13 are not connected to each other.
- adjacent two of the plurality of pole crowns 16 of the second punching piece 13 are not connected to each other, that is, the second punching piece 13 does not have a connecting rib 17, which is effective.
- Elimination of some magnetic bridges in the axial direction of the rotor core 1 reduces the armature reaction strength and effectively improves the anti-demagnetization ability of the motor 2.
- the first punch 12 and the second punch 13 with different structures can effectively reduce the rotor Magnetic leakage, increase air gap magnetic density amplitude, reduce copper loss, and improve the performance of motor 2.
- a rotor is provided, as shown in FIG. 15 to FIG. 23, for a motor 2.
- the rotor includes a plurality of first punches 12, a plurality of second punches 13, and a plurality of openings.
- a plurality of first punches 12 and a plurality of second punches 13 are stacked to constitute the rotor core 1, a plurality of openings 14 are circumferentially provided on the plurality of first punches 12 and the plurality of second punches
- a plurality of openings 14 divide the first punching piece 12 and the second punching piece 13 into a rotor yoke 15 and a plurality of pole crowns 16, and the plurality of pole crowns 16 surrounds the outer periphery of the rotor yoke 15.
- a plurality of openings 14 are penetrated along the axial direction of the rotor core 1 to form a plurality of slots 19, and a plurality of magnets are correspondingly disposed in the plurality of slots 19, wherein each of the plurality of first punches 12 includes At least one connecting rib 17, any one of the at least one connecting rib 17 is disposed between adjacent two of the plurality of pole crowns 16, and adjacent two of the plurality of pole crowns 16 in the second punch 13 are mutually adjacent Not connected.
- the rotor provided by the present invention includes a plurality of first punches 12, a plurality of second punches 13, a plurality of openings 14, and a plurality of magnets.
- the plurality of first punches 12 and the plurality of second punches 13 are stacked to form a rotor.
- Iron core 1 a plurality of openings 14 are circumferentially provided on each of a plurality of first punching pieces 12 and a second punching piece 13, the plurality of openings 14 divide the first punching piece 12 and the second punching piece 13 into a rotor
- the yoke 15 and a plurality of pole crowns 16 are arranged around the outer periphery of the rotor yoke 15.
- a plurality of openings 14 penetrate in the axial direction of the rotor core 1 to form a plurality of slots 19, and a plurality of magnets correspond one by one.
- the magnets are arranged in a plurality of slots 19, preferably, the magnets are sheet-like or arc-shaped, the magnets are adapted to the slots 19, and each of the plurality of first punches 12 includes at least one connecting rib 17, at least one Any one of the connecting ribs 17 is disposed between two adjacent ones of the plurality of pole crowns 16.
- the connecting ribs 17 are connected to the rotor yoke 15, and the phases of the plurality of pole crowns 16 in the second punch 13 are connected.
- the two adjacent rotor cores 1 are not connected to each other.
- the rotor core 1 of the present invention is formed by stacking a first punch 12 including at least one connecting rib 17 and a second punch 13 without connecting rib 17.
- the ribs 17 can ensure the mechanical strength of the first punching sheet 12 and prevent the rotor core 1 from deforming during high-speed rotation to affect the performance of the motor 2.
- the second punch 13 does not have a connecting rib 17, which can effectively remove part of the magnetic bridge in the axial direction of the rotor core 1, reduce the armature reaction intensity, and effectively improve the anti-demagnetization ability of the motor 2.
- the first and second punches 12 and 13 with different structures can effectively reduce the magnetic flux leakage of the rotor, increase the air gap magnetic density amplitude, reduce the copper loss, and improve the performance of the motor 2. As shown in Figure 27 and Figure 28, The invention can increase the back EMF of the rotor and reduce the production cost of the motor 2.
- the plurality of first punching pieces 12 include a plurality of first sub punching pieces 122 and a plurality of second sub punching pieces 124, and each of the plurality of first sub punching pieces 122 A connecting rib 17 is provided between each adjacent two of the plurality of pole crowns 16; each of the plurality of pole crowns 16 of each of the plurality of second sub punches 124 is a first pole crown, the first One end of one pole crown is connected to the adjacent pole crown 16 through a connecting rib 17, and the other end of the first pole crown is not connected to the adjacent pole crown 16; the second punch 13 is sandwiched between the first sub punch 122 And / or the second sub punch 124 is sandwiched between the first sub punches 122; and / or the second punch 13 is sandwiched between the second sub punches 124.
- the plurality of first punches 12 include a plurality of first sub punches 122 and a plurality of second sub punches 124, of which a plurality of Connecting ribs 17 are provided between adjacent two of the plurality of pole crowns 16 of each of the first sub-punching pieces 122, that is, two pole-pole crowns 16 on the first sub-punching piece 122 pass through the connecting ribs 17.
- each of the plurality of second sub punching pieces 124 in the plurality of pole crowns 16 Each one is a first pole crown. One end of the first pole crown is connected to the adjacent pole crown 16 through a connecting rib 17, and the other end of the first pole crown is not connected to the adjacent pole crown 16, that is, the second sub punch 124
- the upper space is provided with connecting ribs 17, some of the pole crowns 16 are connected by the connecting ribs 17, and the other pole crowns 16 are not connected to each other.
- the second sub punch 124 can ensure its own machinery under the action of the connecting ribs 17 Strength to prevent the rotor core 1 from deforming during high-speed rotation and affecting the performance of the motor 2; on the other hand, due to the polar crown 16 on the second sub punch 124 Are not mutually connected, which can effectively remove the bridge portion of the magnetic core in the axial direction of the rotor 1, the armature reaction effect of reduced strength, effectively lift motor 2 is resistant to demagnetization.
- the second punch 13 is sandwiched between the first sub punches 122; and / or the second sub punch 124 is sandwiched between the first sub punches 122; and / or the second punch 13 is sandwiched Between the second sub punches 124, that is, the rotor core 1 is formed by stacking the first sub punches 122, the second sub punches 124, and the second punch 13 of different structures, and the first sub punches 122, the first The stacking methods of the second sub punch 124 and the second punch 13 are diversified, which can effectively reduce the magnetic flux leakage of the rotor, increase the air gap magnetic density amplitude, reduce the copper loss, and improve the performance of the motor 2.
- the connecting ribs 17 of the plurality of second sub punches 124 and the connecting ribs 17 of the plurality of first sub punches 122 are on a plane perpendicular to the axial direction of the rotor core 1. The projections completely overlap.
- connection ribs 17 of the plurality of second sub punches 124 and the connection ribs 17 of the plurality of first sub punches 122 on the plane perpendicular to the axial direction of the rotor core 1 completely overlap, and more
- the second sub punches 124 include a second sub punch of the first type and a second sub punch of the second type, the connecting ribs 17 of the second sub punch of the first type, and the connecting ribs of the second sub punch of the second type.
- the sum of the projections of 17 on a plane perpendicular to the axial direction of the rotor core 1 and the projections of the connecting ribs 17 of the first sub punch 122 on the plane perpendicular to the axial direction of the rotor core 1 completely overlap, that is, the first
- the second sub punch of the second type is stacked with the second sub punch of the second type.
- the connecting rib 17 of the second sub punch of the first type corresponds to the area stacking of the second sub punch of the second type without the connecting rib 17.
- the second punch 13 is sandwiched between the first sub punches 122, and / or the second sub punch of the first type is sandwiched between the first sub punches 122, and / or the second type of the second The sub punches are sandwiched between the first sub punches 122, and / or the second punches 13 are sandwiched between the second sub punches of the first type, and / or the second punches 13 are sandwiched between the second Between the second sub punches, the rotor core 1 is formed by stacking the first sub punches 122 of different structures, the second sub punches of the first type, the second sub punches of the second type, and the second punch 13.
- the stacking methods of the first sub punch 122, the second sub punch of the first type, the second sub punch of the second type, and the second punch 13 are diversified, thereby effectively reducing the magnetic flux leakage of the rotor and increasing the air gap magnetic density. Value, reduce copper consumption, and improve motor 2 performance.
- the stack thickness of the plurality of first sub punches 122 is L1
- the sum of the stack thicknesses of the plurality of second punches 13 and the plurality of second sub punches 124 is L
- the stack thickness of the plurality of first sub punches 122 is L1
- the sum of the stack thicknesses of the plurality of second punches 13 and the plurality of second sub punches 124 is L, and satisfies 0.0105 (L1 + L) ⁇ L1 ⁇ 0.1 (L1 + L).
- a rivet hole 184 or a riveting buckle 182 is provided in the plurality of pole crowns 16 of the first punching piece 12 and the second punching piece 13. Each of them is connected with a plurality of first punches 12 and a plurality of second punches 13.
- a rivet hole 184 or a riveting buckle 182 is provided at a plurality of poles of the first and second punches 12 and 13.
- a plurality of first punches 12 and a plurality of second punches 13 may be connected by rivet buckles 182 provided on each pole crown 16, or a plurality of first punches may be nailed by rivets.
- the plurality of first punching pieces 12 and the plurality of second punching pieces 13 may also be connected by other fixing structures, as long as they do not depart from the design concept of the present invention, they all fall within the protection scope of the present invention.
- a rivet hole 184 or a riveting buckle 182 is provided in the plurality of pole crowns 16 of the first punching piece 12 and the second punching piece 13. On each, a rivet hole 184 or a rivet clasp 182 is located between two magnets 11 of the same polarity among the plurality of magnets 11.
- a rivet hole 184 or a riveting buckle 182 is provided on a plurality of poles of the first punching piece 12 and the second punching piece 13.
- a plurality of first punches 12 and a plurality of second punches 13 may be provided by The rivet buckles 182 on each pole crown 16 are connected, or the rivet holes 184 on each pole crown 16 of the plurality of first punching pieces 12 and the plurality of second punching pieces 13 are nailed by rivets so that the plurality of first One punch 12 is connected to a plurality of second punches 13.
- the plurality of first punching pieces 12 and the plurality of second punching pieces 13 may also be connected by other fixing structures, as long as they do not depart from the design concept of the present invention, they all fall within the protection scope of the present invention.
- the rivet hole 184 is circular, triangular, or hexagonal; and / or the shape of the riveting buckle 182 is rectangular or circular.
- the rivet holes 184 are circular, triangular, hexagonal, or other shapes; and / or the shape of the riveting buckle 182 is rectangular, circular, or other shapes, which can be provided on the pole crown 16 according to actual needs. Effectively improve the flexibility of the installation and connection between the first punch 12 and the second punch 13.
- the magnet 11 is a straight magnet or a V-shaped magnet; and / or the magnet 11 is a rare earth magnet, a ferrite magnet, or a mixed magnet of rare earth and ferrite.
- the magnet 11 is a straight magnet, a V-shaped magnet, or other shapes of magnets.
- the magnet 11 may be a radial and tangential hybrid structure.
- the groove 19 is adapted to the magnet 11; and / or the magnet 11 is a rare earth magnet, a ferrite magnet, or a mixed magnet of a rare earth and a ferrite, wherein the magnet 11 may also have other shapes, and the magnet 11 may also be made of other materials.
- a motor 2 which includes: a rotor as described in any of the above embodiments, and therefore has all the beneficial effects of the rotor, which will not be repeated here.
- the motor 2 further includes a stator body, which is surrounded on the outside of the rotor; wherein the rated torque of the motor 2 is T, the inner diameter of the stator body is Di, and the unit volume torque of the rotor is Is TPV and satisfies 5.18 ⁇ 10 -7 ⁇ T ⁇ Di -3 ⁇ TPV -1 ⁇ 1.17 ⁇ 10 -6 , 5kN ⁇ m ⁇ m -3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m -3 , the rated torque T
- the unit is N ⁇ m
- the unit of the inner diameter Di is mm
- the unit of the unit volume torque TPV is kN ⁇ m ⁇ m -3 .
- the motor 2 further includes a stator body, which is surrounded on the outside of the rotor; wherein the rated torque of the motor 2 is T, the inner diameter of the stator body is Di, and the torque per unit volume of the rotor is TPV, and satisfy 5.18 ⁇ 10 -7 range ⁇ T ⁇ Di -3 ⁇ TPV -1 ⁇ 1.17 ⁇ 10 -6, the torque per unit volume of TPV 5kN ⁇ m ⁇ m -3 ⁇ TPV ⁇ 45kN ⁇ m ⁇ m -3
- the motor 2 can meet the power requirements of the compressor 3.
- the motor 2 and the compressor 3 of the rotor can effectively reduce the magnetic flux leakage of the rotor, increase the utilization rate of the magnet 11, and improve the efficiency of the motor 2.
- the stator body further includes a plurality of stator convex teeth and a plurality of stator slots.
- the stator body further includes a plurality of stator convex teeth and a plurality of stator slots.
- the plurality of stator convex teeth are provided on the inner side wall of the stator body toward the rotor, and each of the plurality of stator slots is provided on the stator body. Between two adjacent ones of the plurality of stator teeth, when the number of stator teeth crossed by one coil is one, that is, the coil is located in the stator slot, and the number of stator slots is limited by the number Z
- the proportional relationship with the number of pole pairs P of the rotor further limits the pole-slot coordination of the motor 2.
- the motor 2 can be a 6-pole 9-slot motor , 4-pole 6-slot motor, 8-pole 12-slot motor, 10-pole 9-slot motor, 10-pole 12-slot motor, 8-pole 9-slot motor, the above-mentioned types of motor 2 can effectively reduce rotor leakage, increase magnetic flux, and help improve Motor 2 efficiency.
- a compressor 3 as shown in FIG. 26, which includes the rotor or the motor 2 according to any one of the above embodiments, and thus has all the beneficial effects of the rotor or the motor 2. , Will not repeat them here.
Abstract
Description
Claims (15)
- 一种转子,用于电机,其特征在于,包括:多个第一冲片和多个第二冲片,所述多个第一冲片和所述多个第二冲片堆叠以构成转子铁芯;多个开口,周向设置于所述多个第一冲片和所述多个第二冲片中的每一个上,所述多个开口将所述多个第一冲片和所述多个第二冲片划分为转子轭和多个极冠,所述多个极冠围设于所述转子轭的外周,所述多个开口沿所述转子铁芯的轴向贯通以形成多个插槽;多个磁铁,所述多个磁铁一一对应设置于所述多个插槽中;其中,所述多个第一冲片中的每一个包括至少一个连接筋,所述至少一个连接筋中的任一个设置于所述多个极冠中的相邻两个之间,所述多个第二冲片的每一个的所述多个开口中至少两个开口相连通。
- 一种转子,用于电机,其特征在于,包括:多个第一冲片和多个第二冲片,所述多个第一冲片和所述多个第二冲片堆叠以构成转子铁芯;多个开口,周向设置于所述多个第一冲片和所述多个第二冲片中的每一个上,所述多个开口将所述多个第一冲片和所述多个第二冲片划分为转子轭和多个极冠,所述多个极冠围设于所述转子轭的外周,所述多个开口沿所述转子铁芯的轴向贯通以形成多个插槽;多个磁铁,所述多个磁铁一一对应设置于所述多个插槽中;其中,所述多个第一冲片中的每一个包括至少一个连接筋,所述至少一个连接筋中的任一个设置于所述多个极冠中的相邻两个之间,所述第一冲片的所述多个开口之间互不连通,所述多个第二冲片的每一个的所述多个开口中至少两个开口相连通。
- 根据权利要求2所述的转子,其特征在于,所述第一冲片的所述连接筋的最小径向厚度为W1;所述多个第二冲片中的每一个包括至少一个连接筋,所述至少一个连接筋中的任一个设置于所述多个极冠中的相邻两个之间,所述第二冲片的 所述连接筋的最小径向厚度为W2,且满足0.2≤W2/W1≤2。
- 根据权利要求2所述的转子,其特征在于,所述第二冲片中的多个极冠中的相邻两个互不连接。
- 一种转子,用于电机,其特征在于,包括:多个第一冲片和多个第二冲片,所述多个第一冲片和所述多个第二冲片堆叠以构成转子铁芯;多个开口,周向设置于所述多个第一冲片和所述多个第二冲片中的每一个上,所述多个开口将所述多个第一冲片和所述多个第二冲片划分为转子轭和多个极冠,所述多个极冠围设于所述转子轭的外周,所述多个开口沿所述转子铁芯的轴向贯通以形成多个插槽;多个磁铁,所述多个磁铁一一对应设置于所述多个插槽中;其中,所述多个第一冲片中的每一个包括至少一个连接筋,所述至少一个连接筋中的任一个设置于所述多个极冠中的相邻两个之间,所述第二冲片中的多个极冠中的相邻两个互不连接。
- 根据权利要求1至5中任一项所述的转子,其特征在于,所述多个第一冲片包括多个第一子冲片和多个第二子冲片,所述多个第一子冲片中的每一个的所述多个极冠中的每相邻两个之间设有所述连接筋;所述多个第二子冲片中的每一个的所述多个极冠中的每一个为第一极冠,所述第一极冠的一端通过所述连接筋与相邻极冠相连,所述第一极冠的另一端与相邻极冠互不连接;所述第二冲片夹设于所述第一子冲片之间;和/或所述第二子冲片夹设于所述第一子冲片之间;和/或所述第二冲片夹设于所述第二子冲片之间。
- 根据权利要求6所述的转子,其特征在于,所述多个第二子冲片的所述连接筋和所述多个第一子冲片的所述连接筋在垂直于所述转子铁芯的轴向的平面上的投影完全重叠。
- 根据权利要求6所述的转子,其特征在于,所述多个第一子冲片的堆叠厚度为L1,所述多个第二冲片和所述多个 第二子冲片的堆叠厚度之和为L,且满足0.0105(L1+L)≤L1≤0.1(L1+L)。
- 根据权利要求所述的转子,其特征在于,当所述磁铁为径向充磁磁铁时,铆钉孔或铆接扣设置于所述第一冲片和所述第二冲片的所述多个极冠的每一个上,以使所述多个第一冲片、所述多个第二冲片相连接。
- 根据权利要求所述的转子,其特征在于,当所述磁铁为切向充磁磁铁时,铆钉孔或铆接扣设置于所述第一冲片和所述第二冲片的所述多个极冠的每一个上,所述铆钉孔或所述铆接扣位于所述多个磁铁中相同极性的两个磁铁之间。
- 根据权利要求2或5所述的转子,其特征在于,所述磁铁为一字型磁铁、V字形磁铁;和/或所述磁铁为稀土磁铁、铁氧体磁铁或稀土与铁氧体混合磁铁。
- 一种电机,其特征在于,包括:如权利要求1至11中任一项所述的转子。
- 根据权利要求12所述的电机,其特征在于,所述电机还包括:定子本体,所述定子本体围设于所述转子的外侧;其中,所述电机的额定转矩为T,所述定子本体的内径为Di,所述转子的单位体积转矩为TPV,且满足5.18×10 -7≤T×Di -3×TPV -1≤1.17×10 -6,5kN·m·m -3≤TPV≤45kN·m·m -3,额定转矩T的单位为N·m,内径Di的单位为mm,单位体积转矩TPV的单位为kN·m·m -3。
- 根据权利要求13所述的电机,其特征在于,所述定子本体还包括多个定子凸齿和多个定子槽隙,所述多个定子凸齿朝向所述转子设置于所述定子本体的内侧壁上,所述多个定子槽隙中的每一个设置于所述多个定子凸齿中的相邻两个之间;线圈,所述线圈跨过一个所述定子凸齿而位于所述定子槽隙中;所述定子槽隙的数量为Z,所述转子的极对数为P,且满足Z/2P=3/2或6/5或6/7或9/8或9/10。
- 一种压缩机,其特征在于,包括:如权利要求1至11中任一项所述的转子;或如权利要求12至14中任一项所述的电机。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2020565457A JP7224373B2 (ja) | 2018-06-20 | 2018-11-15 | ローター、モーター、及び圧縮機 |
KR1020207032931A KR102532060B1 (ko) | 2018-06-20 | 2018-11-15 | 회전자, 모터와 압축기 |
EP18923169.9A EP3783773B1 (en) | 2018-06-20 | 2018-11-15 | Rotor, motor and compressor |
US17/111,943 US20210091616A1 (en) | 2018-06-20 | 2020-12-04 | Rotor, electric motor and compressor |
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CN201810637504.2 | 2018-06-20 | ||
CN201810637504.2A CN110620452A (zh) | 2018-06-20 | 2018-06-20 | 转子、电机和压缩机 |
CN201810636348.8A CN110620451A (zh) | 2018-06-20 | 2018-06-20 | 转子、电机和压缩机 |
CN201810636348.8 | 2018-06-20 |
Related Child Applications (1)
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US17/111,943 Continuation US20210091616A1 (en) | 2018-06-20 | 2020-12-04 | Rotor, electric motor and compressor |
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WO2019242218A1 true WO2019242218A1 (zh) | 2019-12-26 |
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PCT/CN2018/115714 WO2019242218A1 (zh) | 2018-06-20 | 2018-11-15 | 转子、电机和压缩机 |
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Country | Link |
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US (1) | US20210091616A1 (zh) |
EP (1) | EP3783773B1 (zh) |
JP (1) | JP7224373B2 (zh) |
KR (1) | KR102532060B1 (zh) |
WO (1) | WO2019242218A1 (zh) |
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Publication number | Publication date |
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US20210091616A1 (en) | 2021-03-25 |
KR102532060B1 (ko) | 2023-05-11 |
EP3783773A4 (en) | 2021-07-07 |
KR20200143729A (ko) | 2020-12-24 |
EP3783773B1 (en) | 2023-04-12 |
EP3783773A1 (en) | 2021-02-24 |
JP7224373B2 (ja) | 2023-02-17 |
JP2021525054A (ja) | 2021-09-16 |
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