CN118100488B - Rotor punching sheet, rotor assembly with same, motor, compressor and air conditioner - Google Patents
Rotor punching sheet, rotor assembly with same, motor, compressor and air conditioner Download PDFInfo
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- CN118100488B CN118100488B CN202410496072.3A CN202410496072A CN118100488B CN 118100488 B CN118100488 B CN 118100488B CN 202410496072 A CN202410496072 A CN 202410496072A CN 118100488 B CN118100488 B CN 118100488B
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to the technical field of compressors and discloses a rotor punching sheet, a rotor assembly with the rotor punching sheet, a motor, a compressor and an air conditioner, wherein the rotor punching sheet comprises: the punching sheet comprises a punching sheet body, wherein a permanent magnet groove and a fastener mounting hole are formed in the punching sheet body, the permanent magnet groove is suitable for accommodating a permanent magnet, and the fastener mounting hole is suitable for mounting a fastener; wherein the sum of the sectional areas of the fastener installation holes is S1, the sum of the sectional areas of the permanent magnet slots is S2, and the sum of the sectional areas of the permanent magnet slots is satisfied: S1/S2 is more than or equal to 0.25 and less than or equal to 0.85. The rotor punching sheet meets the requirement that S1/S2 is less than or equal to 0.25 and less than or equal to 0.85, wherein S1 is the sum of the sectional areas of the plurality of fastener mounting holes, and S2 is the sum of the sectional areas of the plurality of permanent magnet grooves, so that the rotor punching sheet reduces the influence on the maximum surface magnetism of the rotor while improving the rigidity of the rotor, ensures the magnetic performance of the rotor, and reduces the noise of a compressor by improving the rigidity of the rotor.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a rotor punching sheet, a rotor assembly with the rotor punching sheet, a motor, a compressor and an air conditioner.
Background
The motor is used as the core component of the compressor, the structural design of the motor directly influences the overall performance of the compressor, the motor has the effects of vibration noise, compressor energy efficiency, compressor reliability and the like, as the requirements of people on life quality are higher and higher, the requirements on noise reduction properties of the compressor are higher and higher, the motor is used as a driving source of the compressor, the optimization improvement of multiple motors is favorable for improving the noise reduction effect of the compressor from the source, the higher the rigidity of the motor is, the better the rigidity of the motor is, the lower the noise of the motor is, the better the motor is, the motor generates electric power through the cooperation of a stator and a rotor, the motor noise can be effectively reduced through the enhancement of the strength of the rotor, and in the prior art, the rotor structure of the motor is unreasonable in design, and the rigidity and the magnetic performance are difficult to balance with each other.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a rotor lamination. The rotor punching sheet meets the requirement that S1/S2 is less than or equal to 0.25 and less than or equal to 0.85, wherein S1 is the sum of the sectional areas of the plurality of fastener mounting holes, and S2 is the sum of the sectional areas of the plurality of permanent magnet grooves, so that the rotor punching sheet reduces the influence on the maximum surface magnetism of the rotor while improving the rigidity of the rotor, ensures the magnetic performance of the rotor, and reduces the noise of a compressor by improving the rigidity of the rotor.
The invention also provides a rotor assembly with the rotor punching sheet.
The invention also provides a motor with the rotor assembly.
The invention also provides a compressor with the motor.
The invention also provides an air conditioner with the compressor.
The rotor punching sheet according to the present invention includes: the punching sheet comprises a punching sheet body, wherein a permanent magnet groove and a fastener mounting hole are formed in the punching sheet body, the permanent magnet groove is suitable for accommodating a permanent magnet, and the fastener mounting hole is suitable for mounting a fastener; wherein the sum of the sectional areas of the fastener installation holes is S1, the sum of the sectional areas of the permanent magnet slots is S2, and the sum of the sectional areas of the permanent magnet slots is satisfied: S1/S2 is more than or equal to 0.25 and less than or equal to 0.85.
According to the rotor punching sheet, the plurality of fastener mounting holes are formed in the punching sheet body, fasteners can be inserted into the fastener mounting holes, the plurality of punching sheet bodies are stacked to form the rotor iron core, the plurality of punching sheet bodies are fixed in order by arranging the plurality of fasteners to be respectively matched with the plurality of fastener mounting holes, and the sum of the sectional areas of the plurality of fastener mounting holes is S1; the application has the advantages that the punching sheet body is provided with the plurality of permanent magnet grooves, the sum of the sectional areas of the plurality of permanent magnet grooves is S2, and the S1/S2 is less than or equal to 0.25 and less than or equal to 0.85, so that the rigidity of the rotor can be improved, the noise of the compressor can be reduced, the surface magnetic quantity of the rotor can be ensured, and the magnetic performance of the rotor can be ensured.
According to some embodiments of the invention, the permanent magnet slots are configured as a plurality of permanent magnets arranged at intervals in the circumferential direction, each of the permanent magnets being fitted into a permanent magnet to form a magnetic pole; wherein the number of poles is P and satisfies: p is more than or equal to 8.
According to some embodiments of the invention, the permanent magnet slots are configured as m permanent magnet slots arranged at intervals in the circumferential direction of the punching body, and each magnetic pole is provided with k permanent magnet slots; and satisfies the following: m=k×p, k being a positive integer.
According to some embodiments of the invention, the fastener mounting holes are provided between at least one pair of adjacent permanent magnet slots.
According to some embodiments of the present invention, through holes penetrating in a thickness direction are formed in the punching sheet body, the through holes are configured into a plurality of through holes and are circumferentially spaced along the punching sheet body, and the sum of areas of the through holes is S3 and satisfies: S1/S3 is more than or equal to 0.2 and less than or equal to 0.4.
According to some embodiments of the present invention, the punching sheet body is provided with a rotor inner hole penetrating in a thickness direction, the through hole is arranged at the periphery of the rotor inner hole, a minimum distance between the through hole and the rotor inner hole is L1, a minimum width of the permanent magnet slot at a position where the permanent magnet is installed is L2, and the requirements are that: l1 is more than or equal to L2.
According to some embodiments of the invention, the minimum distance between the fastener mounting hole and the permanent magnet slot is L3 and satisfies that L3 is equal to or greater than L2.
A rotor assembly according to another embodiment of the present invention is briefly described below.
A rotor assembly according to the present invention includes rotor sheets configured as a plurality of rotor sheets stacked in a thickness direction, and each of the rotor sheets is configured as the rotor sheet according to any one of the embodiments described above; a rotor end plate provided at least one end of the plurality of rotor punching sheets in the thickness direction; the balancing weight is arranged on one side, away from the rotor punching sheet, of the rotor end plate and is fixedly connected with the rotor punching sheets through fasteners.
Because the rotor assembly comprises the rotor punching sheet according to any one of the embodiments, and the rotor punching sheets are laminated to form the rotor core, the rotor core of the rotor assembly has higher strength, less noise generated when the rotor assembly rotates, and the rotor end plates are arranged at one end of the thickness direction of the rotor core or at two ends of the thickness direction of the rotor core so as to limit the laminated rotor punching sheets and ensure that the laminated punching sheet bodies are tightly laminated; one side of the rotor end plate, which is away from the rotor punching sheet, is provided with a balance block, a rivet penetrates through the balance block and the rotor punching sheet to fix the plurality of laminated rotor punching sheets, and the center of mass position of the rotor assembly in the rotation process is adjusted by arranging the balance block, so that the rotor assembly is ensured to rotate stably, and the noise of the compressor is reduced.
An electric machine according to another embodiment of the present invention is briefly described below.
The motor according to the invention comprises the rotor assembly in the embodiment, the motor shell is constructed as a permanent magnet motor consisting of a stator and a rotor, and the motor according to the invention is provided with the rotor assembly in the embodiment, so that the strength of the rotor assembly is high, the noise of the motor is reduced, the surface magnetic quantity of the rotor assembly is high, and the running efficiency of the motor is ensured.
A compressor according to another embodiment of the present invention is briefly described as follows.
The motor according to the invention is provided with the motor according to the embodiment, and the motor according to the invention is provided with the motor according to the embodiment, so that after the motor according to the embodiment is assembled, the compressor according to the invention runs, the noise generated by the operation of the compressor is small, the running efficiency of the motor is high, and the compressor is ensured to have higher cold energy.
An air conditioner according to another embodiment of the present invention is briefly described as follows.
The air conditioner according to the invention comprises the compressor in the embodiment, and the air conditioner is provided with the compressor in the embodiment, so that the noise generated by the compressor of the air conditioner is small, the cold quantity of the compressor is high, the noise reduction performance of the air conditioner is better, and the refrigerating effect of the air conditioner is good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of a rotor sheet according to one embodiment of the invention;
FIG. 2 is a schematic view of a rotor sheet according to another embodiment of the present disclosure;
FIG. 3 is a schematic view of a rotor sheet according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a rotor assembly according to one embodiment of the present disclosure;
FIG. 5 is an axial end view schematic of a rotor assembly according to one embodiment of the invention;
FIG. 6 is a schematic diagram of an axial end face of an electric machine according to one embodiment of the invention;
FIG. 7 is a schematic view of a compressor configuration according to one embodiment of the present invention;
FIG. 8 is a graph of rotor stiffness and rotor maximum apparent magnetic variation according to one embodiment of the invention;
FIG. 9 is a rotor stiffness and compressor cold variation graph according to one embodiment of the invention.
Reference numerals:
rotor punching sheet 1;
A punching body 11; permanent magnet slots 12, permanent magnets 121;
a fastener mounting hole 13; a through-flow hole 14; a rotor bore 15; a rivet 16;
rotor assembly 20, rotor end plate 201, balance weight 202, rotor core 203;
motor 30, stator 301, stator winding 302, stator core 303;
Compressor 40, compressor housing 401, base 402.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The motor is used as the core component of the compressor, the structural design of the motor directly influences the overall performance of the compressor, the motor has the effects of vibration noise, compressor energy efficiency, compressor reliability and the like, as the requirements of people on life quality are higher and higher, the requirements on noise reduction properties of the compressor are higher and higher, the motor is used as a driving source of the compressor, the optimization improvement of multiple motors is favorable for improving the noise reduction effect of the compressor from the source, the higher the rigidity of the motor is, the better the rigidity of the motor is, the lower the noise of the motor is, the better the motor is, the motor generates electric power through the cooperation of a stator and a rotor, the motor noise can be effectively reduced through the enhancement of the strength of the rotor, and in the prior art, the rotor structure of the motor is unreasonable in design, and the rigidity and the magnetic performance are difficult to balance with each other.
A rotor sheet according to an embodiment of the present invention is described below with reference to fig. 1 to 9.
The rotor punching sheet 1 according to the present invention comprises a punching sheet body 11, wherein a permanent magnet groove 12 and a fastener mounting hole 13 are formed on the punching sheet body 11, the permanent magnet groove 12 is adapted to accommodate a permanent magnet 121, and the fastener mounting hole 13 is adapted to mount a fastener; wherein the fastener installation hole 13 is configured as a plurality of and the sum of sectional areas of the plurality of fastener installation holes 13 is S1, the permanent magnet slot 12 is configured as a plurality of and the sum of sectional areas of the plurality of permanent magnet slots 12 is S2, and the following is satisfied: S1/S2 is more than or equal to 0.25 and less than or equal to 0.85.
As shown in fig. 1 to 3, a plurality of permanent magnet slots 12 are formed on the sheet body 11, the plurality of permanent magnet slots 12 are spaced around the center of the sheet body 11, and a plurality of permanent magnets 121 may be inserted into the permanent magnet slots 12 to form a plurality of magnetic poles; a plurality of fastener mounting holes 13 are formed in the sheet body 11, the fastener mounting holes 13 being usable for mounting fasteners, wherein the fasteners are configured as rivets 16, the fastener mounting holes 13 being configured as rivet holes through which the sheet body 11 is fastened by the rivets 16, the plurality of fastener mounting holes 13 being arranged at intervals in the circumferential direction of the sheet body 11 and being located radially inward of the plurality of permanent magnet grooves 12, wherein the sum of the sectional areas of the plurality of fastener mounting holes 13 is S1, the sum of the sectional areas of the plurality of permanent magnet grooves 12 is S2, for example, n fastener mounting holes 13 are provided in the sheet body 11, the n fastener mounting holes 13 have a cross section of S11, S12, … …, S1n, the sum of the sectional areas s1=s11+s12+ … … +s1n, m permanent magnet grooves 12 are provided in the sheet body 11, the m permanent magnet grooves 12 have a sectional area of S21, S22, … …, S2m, respectively, the sum of the sectional areas S2=S21+S22+ … … +S2m, and the value of S1/S2 satisfies 0.25.ltoreq.S1/S2.ltoreq.0.85, as shown in FIG. 8, when 0.1.ltoreq.S1/S2.ltoreq.0.025, the rotor rigidity increases with increasing value of S1/S2, and the rotor rigidity increases faster, and the maximum surface magnetism of the rotor is in the descending stage and the descending speed is gentle, when 0.85.ltoreq.S1/S2.ltoreq.1.15, the rotor rigidity increases slowly, and when 0.25.ltoreq.S1/S2.ltoreq.0.85, the rotor rigidity increases more obviously, and the maximum surface magnetism of the rotor decreases slowly, therefore, the rotor sheet 1 of the present application can reduce the influence on the maximum surface magnetism of the rotor, ensure the rotor magnetic performance, and reduce the noise of the compressor 40 by increasing the rotor rigidity.
According to the rotor punching sheet 1, a plurality of fastener mounting holes 13 are formed in a punching sheet body 11, fasteners can be inserted into the fastener mounting holes 13, the plurality of punching sheet bodies 11 are stacked to form a rotor core 203, the plurality of punching sheet bodies 11 are fixed in order by arranging the plurality of fasteners to be respectively matched with the plurality of fastener mounting holes 13, and the sum of the sectional areas of the plurality of fastener mounting holes 13 is S1; the punching sheet body 11 is provided with a plurality of permanent magnet grooves 12, the sum of the sectional areas of the plurality of permanent magnet grooves 12 is S2, and the punching sheet body 11 of the application satisfies that S1/S2 is less than or equal to 0.25 and less than or equal to 0.85, thereby not only improving the rigidity of the rotor and reducing the noise of the rotor, but also ensuring the surface magnetic quantity of the rotor and the magnetic performance of the rotor.
According to some embodiments of the present invention, the permanent magnet slots 12 are configured in a plurality of circumferentially spaced apart, each permanent magnet slot 12 having a permanent magnet 121 inserted therein to form a magnetic pole; wherein the number of poles is P and satisfies: p is more than or equal to 8.
As shown in fig. 1 to 3, a plurality of permanent magnet slots 12 are provided at intervals in the circumferential direction of the punching body 11, and one or more permanent magnets 121 can be inserted into each of the plurality of permanent magnet slots 12 to form a plurality of magnetic poles, wherein the number P of the magnetic poles satisfies p.gtoreq.8.
According to some embodiments of the present invention, the permanent magnet slots 12 are configured as m permanent magnet slots 12 arranged at intervals in the circumferential direction of the sheet body 11, each magnetic pole being provided with k permanent magnet slots 12; and satisfies the following: m=k×p, k being a positive integer.
Specifically, when the permanent magnet 121 is inserted into the permanent magnet slot 12, the number of generated magnetic poles p=8, when k=1, the number m=8 of the permanent magnet slot 12, when k=2, the number m=16 of the permanent magnet slot 12, when k is other positive integer, the number of the permanent magnet slot 12 is correspondingly changed, and under the condition that the number of magnetic poles is fixed, by limiting the number of the magnetic poles, the number of the permanent magnet slot 12 is a positive integer multiple of the number of the magnetic poles, when the rotor and the stator 301 are matched to rotate, the strength of the rotor is improved, and the deformation of the punching body 11 is avoided.
According to some embodiments of the present invention, fastener mounting holes 13 are provided between at least one pair of adjacent permanent magnet slots 12.
As shown in fig. 1 to 3, the permanent magnet slots 12 are configured in a V-shaped structure, the first slot body and the second slot body are inclined relative to each other, the permanent magnet slots 12 are arranged in pairs, fastener mounting holes 13 are formed between at least one pair of adjacent permanent magnet slots 12, fasteners are inserted into the fastener mounting holes 13, a plurality of stacked punching sheet bodies 11 are fixed, the lamination of the punching sheet bodies 11 is ensured to be tight, and noise generated in the rotation process of the rotor is reduced.
According to some embodiments of the present invention, through-holes 14 penetrating in the thickness direction are provided on the die body 11, the through-holes 14 are configured in a plurality and are arranged at intervals along the circumferential direction of the die body 11, and the sum of the areas of the through-holes 14 is S3 and satisfies: S1/S3 is more than or equal to 0.2 and less than or equal to 0.4.
Specifically, a plurality of through holes 14 are arranged on the punching body 11, the through holes 14 and the through holes 14 are circumferentially arranged around the center of the punching body 11, through the arrangement of the through holes 14, a rotor and a stator 301 in a motor 30 rotate in a matching way to generate current and drive a pump body in a compressor 40 to spray oil-bearing gas, the oil-bearing gas circulates through the through holes 14 and can enter a permanent magnet groove 12 to radiate heat of the permanent magnet 121 under the action of centrifugal force, so that the permanent magnet 121 is avoided from overheating, wherein the sum of the sectional areas of the through holes 14 is S3, for example, t through holes 14 can be arranged on the punching body 11, the areas of the t through holes 14 are S31, S32, … … and S3t respectively, S3=S31+S32+ … … +S3t is defined, as shown in figure 9, when S1/S3 is less than or equal to 0.2 and the value of S1/S3 is increased, the rotor rigidity is improved faster, the cooling capacity of the compressor 40 is reduced along with the increase of S1/S3, the reducing speed is relatively slow, when S1/S3 is less than or equal to 0.4 and less than or equal to 0.6, the rotor rigidity is improved slowly along with the increase of S1/S3 value, but the cooling capacity of the compressor 40 is increased, therefore, when S1/S3 value is less than or equal to 0.2 and less than or equal to 0.4, the rotor rigidity is in an ascending state, and the cooling capacity of the compressor 40 is reduced slowly, and therefore, when S1/S3 is less than or equal to 0.2 and less than or equal to 0.4, the improvement of the rotor rigidity, the noise reduction of the compressor 40 and the cooling capacity of the compressor 40 are ensured to be in a higher value, the refrigerating efficiency of the compressor 40 are improved, and the permanent magnet 121 can be cooled by arranging a plurality of through holes 14, and the use safety of the permanent magnet 121 is ensured.
According to some embodiments of the present invention, the punching body 11 is provided with a rotor inner hole 15 penetrating in the thickness direction, the through-flow hole 14 is provided at the outer periphery of the rotor inner hole 15, the minimum distance between the through-flow hole 14 and the rotor inner hole 15 is L1, the minimum width of the permanent magnet slot 12 at the position where the permanent magnet 121 is installed is L2, and the following is satisfied: l1 is larger than or equal to L2, and the minimum distance between the through hole 14 and the peripheral wall of the rotor inner hole 15 is always not smaller than the minimum width of the permanent magnet 121 arranged in the permanent magnet groove 12, so that the magnetic circuit width of the rotor punching sheet 1 body can be increased, and the rotor magnetism is increased.
According to some embodiments of the present invention, the minimum distance between the fastener mounting hole 13 and the permanent magnet slot 12 is L3, and satisfies that L3 is greater than or equal to L2, the fastener mounting hole 13 may be configured as a rivet hole, the fastener may be configured as a rivet 16, the plurality of punching bodies 11 form the rotor core 203 in a lamination manner, and the plurality of punching bodies 11 are fixed as a whole by the cooperation of the rivet 16 and the rivet hole, and the minimum distance L3 between the rivet hole and the permanent magnet slot 12 is always greater than the minimum width of the position of the permanent magnet 121 installed in the permanent magnet slot 12, which is beneficial to enhancing the rigidity of the rotor and reducing the noise of the compressor 40.
The rotor assembly 20 according to the present invention is briefly described below.
The rotor assembly 20 according to the present invention includes the rotor sheet 1, the rotor end plate 201, and the weight 202, the rotor sheet 1 is configured as a plurality of rotor sheets 1 stacked in the thickness direction, and each rotor sheet 1 is configured as the rotor sheet 1 according to any one of the embodiments described above; the rotor end plate 201 is provided at least one end of the plurality of rotor punching sheets 1 in the thickness direction; the balance weight 202 is disposed on a side of the rotor end plate 201 facing away from the rotor punching sheet 1 and is fixedly connected with a plurality of rotor punching sheets 1 through fasteners.
Since the rotor assembly 20 according to the present application includes the rotor sheet 1 according to any one of the embodiments described above, and the rotor sheets 1 are laminated to form the rotor core 203, the rotor core 203 of the rotor assembly 20 according to the present application has higher strength, less noise generated when the rotor assembly 20 rotates, and the rotor end plates 201 are provided at one end of the rotor core 203 in the thickness direction or at both ends of the rotor core 203 in the thickness direction, so as to limit the laminated rotor sheet 1, and ensure that the lamination of the sheet body 11 is tight; the balance weight 202 is arranged on one side, away from the rotor punching sheet 1, of the rotor end plate 201, rivets 16 penetrate through the balance weight 202 and the rotor punching sheet 1 to fix the plurality of laminated rotor punching sheets 1, and the center of mass position of the rotor assembly 20 in the rotation process is adjusted by arranging the balance weight 202 through the rotation process of the rotor assembly 20, so that the rotor assembly 20 is ensured to rotate stably, and noise generated by the rotor assembly 20 is reduced.
The motor 30 according to the present invention is briefly described below.
The motor 30 according to the present invention includes the rotor assembly 20 of the above embodiment, and the housing of the motor 30 is configured as a permanent magnet motor composed of the stator 301 and the rotor, and since the motor 30 according to the present invention is provided with the rotor assembly 20 of the above embodiment, the strength of the rotor assembly 20 is high, which is advantageous in reducing noise of the motor 30, and the surface magnetic quantity of the rotor assembly 20 is high, which ensures the operation efficiency of the motor 30.
After the stator 301 and the rotor are assembled, the structure of the stator 301 is shown in fig. 6, the stator 301 includes a stator core 303 and a stator winding 302, and the rotor is configured as the rotor assembly 20 described in the above embodiment.
The compressor 40 according to the present invention is briefly described below.
The motor 30 according to the present invention has the motor 30 according to the above embodiment, and since the motor 30 according to the present invention has the motor 30 according to the above embodiment, the compressor 40 according to the present invention has less noise generated by the operation of the compressor 40 after the motor 30 according to the above embodiment is assembled, the operation efficiency of the motor 30 is high, and the compressor 40 is ensured to have high cooling capacity.
In some embodiments, as shown in fig. 7, a base 402 is disposed at the bottom of the compressor housing 401, for supporting and fixing the compressor housing 401, and the motor 30 described in the foregoing embodiments is disposed inside the compressor housing 401.
The air conditioner according to the present invention is briefly described as follows.
The air conditioner according to the present invention includes the compressor 40 of the above embodiment, and since the air conditioner according to the present invention is provided with the compressor 40 of the above embodiment, the noise generated from the compressor 40 of the air conditioner is small, the cooling capacity of the compressor 40 is high, the noise reduction performance of the air conditioner is better, and the refrigerating effect of the air conditioner is good.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the description of the invention, a "first feature" or "second feature" may include one or more of such features.
In the description of the present invention, "plurality" means two or more.
In the description of the invention, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.
In the description of the invention, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A rotor punching sheet, comprising:
the punching sheet comprises a punching sheet body, wherein a permanent magnet groove and a fastener mounting hole are formed in the punching sheet body, the permanent magnet groove is suitable for accommodating a permanent magnet, and the fastener mounting hole is suitable for mounting a fastener; wherein the sum of the sectional areas of the fastener installation holes is S1, the sum of the sectional areas of the permanent magnet slots is S2, and the sum of the sectional areas of the permanent magnet slots is satisfied: S1/S2 is more than or equal to 0.25 and less than or equal to 0.85.
2. The rotor punching of claim 1, wherein the rotor is,
The permanent magnet slots are configured into a plurality of permanent magnets which are arranged at intervals in the circumferential direction, and each permanent magnet slot is internally provided with a permanent magnet to form a magnetic pole; wherein the number of poles is P and satisfies: p is more than or equal to 8.
3. The rotor sheet according to claim 2, wherein the permanent magnet slots are configured as m pieces spaced apart in a circumferential direction of the sheet body, each of the magnetic poles being provided with k permanent magnet slots; and satisfies the following: m=k×p, k being a positive integer.
4. A rotor punching sheet according to claim 3, characterized in that the fastener mounting holes are provided between at least one pair of adjacent permanent magnet slots.
5. The rotor punching sheet according to claim 1, characterized in that through holes penetrating in a thickness direction are provided in the punching sheet body, the through holes are configured in a plurality and are arranged at intervals along a circumferential direction of the punching sheet body, and a sum of areas of the through holes is S3 and satisfies: S1/S3 is more than or equal to 0.2 and less than or equal to 0.4.
6. The rotor punching sheet according to claim 5, characterized in that a rotor inner hole penetrating in a thickness direction is provided on the punching sheet body, the through-flow hole is provided on an outer periphery of the rotor inner hole, a minimum distance between the through-flow hole and the rotor inner hole is L1, a minimum width of the permanent magnet groove at a position where the permanent magnet is mounted is L2, and the following is satisfied: l1 is more than or equal to L2.
7. The rotor punching of claim 5, wherein a minimum distance between the fastener mounting hole and the permanent magnet slot is L3 and satisfies L3 ≡l2.
8. A rotor assembly, comprising:
a rotor sheet configured as a plurality of rotor sheets stacked in a thickness direction, and each of the rotor sheets is configured as a rotor sheet according to any one of claims 1 to 7;
a rotor end plate provided at least one end of the plurality of rotor punching sheets in the thickness direction;
the balancing weight is arranged on one side, away from the rotor punching sheet, of the rotor end plate and is fixedly connected with the rotor punching sheets through fasteners.
9. An electric machine comprising the rotor assembly of claim 8.
10. A compressor comprising the motor of claim 9.
11. An air conditioner comprising the compressor of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410496072.3A CN118100488B (en) | 2024-04-24 | 2024-04-24 | Rotor punching sheet, rotor assembly with same, motor, compressor and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410496072.3A CN118100488B (en) | 2024-04-24 | 2024-04-24 | Rotor punching sheet, rotor assembly with same, motor, compressor and air conditioner |
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| Publication Number | Publication Date |
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| CN118100488A CN118100488A (en) | 2024-05-28 |
| CN118100488B true CN118100488B (en) | 2024-07-23 |
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| CN202410496072.3A Active CN118100488B (en) | 2024-04-24 | 2024-04-24 | Rotor punching sheet, rotor assembly with same, motor, compressor and air conditioner |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264950A (en) * | 1999-02-22 | 2000-08-30 | 株式会社东芝 | Permanent-magnet magnetic resistance electric rotating machinery |
| CN109980814A (en) * | 2017-12-28 | 2019-07-05 | 丹佛斯（天津）有限公司 | Built-in permanent magnet motor rotor and magneto |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09163647A (en) * | 1995-11-30 | 1997-06-20 | Toshiba Corp | Permanent magnet rotor |
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2024
- 2024-04-24 CN CN202410496072.3A patent/CN118100488B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264950A (en) * | 1999-02-22 | 2000-08-30 | 株式会社东芝 | Permanent-magnet magnetic resistance electric rotating machinery |
| CN109980814A (en) * | 2017-12-28 | 2019-07-05 | 丹佛斯（天津）有限公司 | Built-in permanent magnet motor rotor and magneto |
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| Publication number | Publication date |
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| CN118100488A (en) | 2024-05-28 |
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