WO2016199884A1 - Compresseur électrique - Google Patents

Compresseur électrique Download PDF

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Publication number
WO2016199884A1
WO2016199884A1 PCT/JP2016/067318 JP2016067318W WO2016199884A1 WO 2016199884 A1 WO2016199884 A1 WO 2016199884A1 JP 2016067318 W JP2016067318 W JP 2016067318W WO 2016199884 A1 WO2016199884 A1 WO 2016199884A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
stator core
peripheral surface
electric compressor
strength
Prior art date
Application number
PCT/JP2016/067318
Other languages
English (en)
Japanese (ja)
Inventor
裕展 出口
Original Assignee
株式会社ヴァレオジャパン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ヴァレオジャパン filed Critical 株式会社ヴァレオジャパン
Priority to JP2017523710A priority Critical patent/JPWO2016199884A1/ja
Publication of WO2016199884A1 publication Critical patent/WO2016199884A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof

Definitions

  • the present invention relates to an electric compressor provided with a compression mechanism and an electric motor that drives the compression mechanism in a housing, and more particularly, to a stator core constituting the electric motor that is fixed to the housing by an interference fit.
  • An electric compressor is configured by housing a compression mechanism and an electric motor that drives the compression mechanism in a housing.
  • a method of fixing a stator core constituting the electric motor to the housing for example, an interference fit is used. .
  • the inner diameter of the housing is formed slightly smaller than the outer diameter of the stator core, and the housing is thermally expanded by bringing it to a high temperature state.
  • a shrink fit that fits a stator core at room temperature into the housing, and then shrinks the housing by returning the housing to room temperature to fix the stator core to the housing.
  • the outer diameter of the stator core is formed slightly larger than the inner diameter of the housing, the stator core is set to a low temperature state to reduce the outer diameter of the stator core, and the low temperature state stator core is inserted into the normal temperature housing. Then, there is also a cold fitting in which the stator core is fixed to the housing by returning the stator core to the original state by returning the stator core to room temperature.
  • the housing is attached to a predetermined portion of the vehicle, for example, as shown in FIG. A mounting foot portion is provided on the outer surface.
  • Patent Document 2 a plurality of gaps are provided on the inner peripheral surface of the housing or the outer peripheral surface of the stator core along the circumferential direction of the peripheral surface, and a portion where the housing and the stator core are in contact with each other is partially provided. Then, in the interference fit state, the pressing force acting on the stator core by the housing causes a variation in the circumferential direction, the stator core is partially deformed, and the dimension of the gap space between the stator core and the rotor is not uniform in the circumferential direction. The inconvenience that the vibration and noise of the motor of the electric compressor increase and the performance of the electric compressor decreases.
  • An object of the present invention is to provide an electric compressor capable of suppressing partial deformation of a stator core even when the strength is partially increased from the structure of the housing.
  • An electric compressor includes a compression mechanism, an electric motor that drives the compression mechanism, and a housing that houses the compression mechanism and the electric motor.
  • the electric motor includes a stator having a stator core, and a drive shaft.
  • a rotor that is fixed and rotatably disposed inside the stator, and the inner peripheral surface of the housing and the outer peripheral surface of the stator core are brought into contact with each other by an interference fit, and the stator is fixed in the housing.
  • the housing partly has a strength increasing portion whose strength is increased compared to other portions, and the portion where the pressing force acts on the stator core from the strength increasing portion side in the interference fit state.
  • a non-contact portion is formed in which the inner peripheral surface of the housing and the outer peripheral surface of the stator core are not in contact with each other (claim 1). .
  • the contact ratio in the circumferential direction between the stator core and the housing is similar to that in the case where the stator core and the housing are in contact with each other around the entire circumference.
  • the strength increasing portion is formed by a mounting foot portion provided on an outer surface of the housing in order to attach the electric compressor to an attached body, and the non-contact portion is The concave portion is formed on a portion of the inner peripheral surface of the housing between the mounting leg portion and the outer peripheral surface of the stator core.
  • the mounted body is, for example, an automobile or other vehicles.
  • the housing has a mounting foot, and even if a partial strength increase portion occurs in the housing due to the mounting foot, the contact ratio in the circumferential direction between the stator core and the housing is in contact with the entire circumference of the stator core and the housing. Forming a recess in the inner peripheral surface of the housing between the mounting foot and the outer peripheral surface of the stator core while making it closer to the case, it is stronger than other parts based on the strength increasing part The pressing force is prevented from acting on the outer peripheral surface of the stator core from the inner peripheral surface of the housing.
  • the electric compressor according to the invention of claim 3 is characterized in that a rib is provided on the outer surface of the housing so as to extend from the mounting foot in substantially the same direction as the axial direction of the drive shaft.
  • the rib extends from the mounting foot portion to the housing.
  • the present invention while the contact ratio in the circumferential direction between the stator core and the housing is close to the case where the stator core and the housing are in contact with each other on the entire circumference, there is a partial strength increasing portion in the housing. Even if there is a non-contact portion between the inner peripheral surface of the housing and the outer peripheral surface of the stator core, a stronger pressing force than the other portion based on the strength increasing portion is applied from the inner peripheral surface of the housing to the outer periphery of the stator core. It is possible to suppress working on the surface. Therefore, when the stator core is fixed to the housing by the interference fit, deformation of the stator core can be avoided even if the housing has a partial strength increasing portion.
  • the contact ratio in the circumferential direction between the stator core and the housing is determined as the stator core.
  • FIG. 1 is a cross-sectional view showing a configuration example of the electric compressor of the present invention and an aspect having both a non-contact portion and a rib.
  • 2 is a cross-sectional view of the electric compressor of FIG. 1 taken along line AA.
  • FIG. 3 is a cross-sectional view of the electric compressor showing Reference Example 1 having a configuration in which a portion where the housing and the stator are in contact is partially formed.
  • FIG. 4 is a cross-sectional view of an electric compressor showing Reference Example 2 in which a portion where the housing and the stator are in contact with each other extends over the entire circumference.
  • FIG. 5 is a graph showing that the present invention is superior in suppressing the deformation amount of the stator core as compared with Reference Example 1 and Reference Example 2.
  • FIG. 1 and FIG. 2 show an electric compressor 1 suitable for a refrigeration cycle using a refrigerant as a working fluid.
  • This electric compressor 1 is provided with a compression mechanism 3 on the right side in FIG. 1 and a motor 4 for driving the compression mechanism 3 on the left side in FIG. Yes.
  • the left side in FIG. 1 is the front side of the electric compressor 1, and the right side in FIG. 1 is the rear side of the electric compressor 1.
  • the housing 2 is assembled to an electric motor housing member 2a that houses an electric motor 4 that drives the compression mechanism 3, and one end side (front end side) in the axial direction of the electric motor housing member 2a.
  • An inverter housing member 2b for housing a substrate (not shown) on which a drive circuit in which a control circuit for controlling driving and an inverter are integrated is mounted, and the other end side (rear end) in the axial direction of the motor housing member 2a.
  • a compression mechanism accommodating housing member 2c that accommodates the compression mechanism 3.
  • the motor housing housing member 2 a and the inverter housing housing member 2 b are connected by a fastening bolt 5, and the motor housing housing member 2 a and the compression mechanism housing housing member 2 c are connected by a fastening bolt 6.
  • a partition wall 8 in which a shaft support portion 8a is integrally formed is provided on the side of the inverter housing member 2b that faces the motor housing housing member 2a.
  • the partition wall 9 in which the shaft support part 9a was integrally formed is provided in the side which opposes the compression mechanism accommodation housing member 2c of the electric motor accommodation housing member 2a.
  • the drive shaft 10 is rotatably supported by the shaft support portions 8 a and 9 a of the partition walls 8 and 9 via bearings 11 and 12.
  • the interior of the housing 2 accommodates the compression mechanism 3 in order from the rear side to the front side of the electric compressor 1 by the partition walls 9 and 8 formed on the electric motor accommodation housing member 2a and the inverter accommodation housing member 2b.
  • the inverter accommodating space 13b is formed by closing the open end of the inverter accommodating housing member 2b with the lid 14.
  • the compression mechanism 3 is, for example, a known scroll type having a fixed scroll member and an orbiting scroll member disposed opposite thereto.
  • the fixed scroll member is provided on the entire circumference along the outer edge of the disk-shaped end plate fixed to the housing and the end plate.
  • a cylindrical outer peripheral wall erected toward the front side of the compressor, and a spiral spiral wall extending from the end plate toward the front side of the compressor inside the outer peripheral wall; .
  • the orbiting scroll member has a disc-shaped end plate and a spiral-shaped spiral wall standing from the end plate toward the rear side of the compressor, and a boss portion formed on the back surface of the end plate.
  • the eccentric shaft provided at the rear end portion of the drive shaft 10 is connected, and is supported so as to be capable of swiveling around the shaft center of the drive shaft 10.
  • the fixed scroll member and the orbiting scroll member are engaged with each other by the respective spiral walls so that the compression chamber is surrounded by a space surrounded by the end plate and the spiral of the fixed scroll member and the end plate and the spiral wall of the orbiting scroll member. Is forming.
  • a refrigerant inlet for sucking the refrigerant introduced from the suction port 20 described later through the motor housing space 13a.
  • a discharge port for discharging the refrigerant gas compressed by the compression mechanism 3 is formed in the approximate center of the end plate of the fixed scroll member of the compression mechanism 3.
  • the orbiting scroll member orbits around the axis of the drive shaft 10 and the compression chamber moves from the outer peripheral side to the center side of the spiral walls of both scroll members.
  • the refrigerant gas is compressed by moving while the volume is gradually reduced, and the compressed refrigerant gas is discharged from the discharge port formed in the end plate of the fixed scroll member.
  • the stator 15 and the rotor 16 constituting the electric motor 4 are accommodated in the electric motor accommodating space 13a formed in the front part of the partition wall 9 in the housing 2.
  • the stator 15 is formed of an iron-based material and has a cylindrical stator core 17, a coil 18 (shown by a broken line in FIG. 2) wound around the teeth of the stator core 17, and an axial end ( An insulator bobbin (hereinafter abbreviated as “bobbin”) 19 attached to the coil end is configured, and is fixed to the inner peripheral surface of the housing 2 (electric motor housing member 2a).
  • the drive shaft 10 is fixedly mounted with a rotor 16 in which a magnet is accommodated inside the stator 15. The rotor 16 is rotated by the rotating magnetic force formed by the stator 15 to rotate the drive shaft 10.
  • a suction port 20 for sucking refrigerant gas is formed on the outer peripheral wall of the housing 2 (motor housing member 2a) facing the motor housing space 13a, and the refrigerant (to be compressed) is formed through the suction port 20. Fluid) is introduced into the motor housing space 13a and guided to the compression mechanism 3 through the motor housing space 13a.
  • the electric compressor 1 is mounted on the same side as the suction port 20 of the housing 2 so that the electric compressor 1 can be mounted on a vehicle when configuring a refrigeration cycle of a vehicle air conditioner such as an automobile.
  • a foot 21 is provided and a mounting foot 22 is provided on the opposite side of the housing 2 from the mounting foot 21 side.
  • These mounting feet 21 and 22 are formed integrally with the housing 2 and have bolt insertion holes 21a and 22a for mounting and fixing to a vehicle via bolts (not shown).
  • the electric compressor 1 of the present invention has a non-contact portion between the housing 2 and the stator core 17 at a portion between the mounting foot 21 of the housing 2 and the stator core 17.
  • a recess 23 is formed.
  • the recess 23 is curved in an arc shape toward the outer peripheral surface side of the housing 2.
  • the electric compressor 1 also has a non-contact portion between the housing 2 and the stator core 17 in a portion between the mounting foot portion 22 of the housing 2 and the stator core 17.
  • a recess 24 is formed.
  • the recess 24 has an arcuate shape toward the outer peripheral surface of the housing 2.
  • these recesses 23, 24 are forces that press from the housing 2 to the stator core 17 when the housing 2 and the stator core 17 are shrink-fitted in a range along the axial direction of the housing 2. It may be formed so as to cover substantially the entire range of the range to which is added.
  • the recesses 23 and 24 may not be arranged at positions symmetrical with respect to the drive shaft 10, or the radial widths of the mounting feet 21 and 22. However, it may be provided in a range that is a part of the above.
  • the shape of the recesses 23 and 24 is not particularly limited as long as it is possible to ensure non-contact between the housing 2 and the stator core 17, and is not particularly limited.
  • the electric compressor 1 is provided with ribs 25 and 26 extending in the axial direction from the mounting feet 21 and 22 toward the compression mechanism 3 on the side peripheral surface of the housing 2. ing.
  • the ribs 25 and 26 are formed integrally with the housing 2.
  • the electric compressor 100 of Reference Example 1 is shown in FIG. 3, and the electric compressor 200 of Reference Example 2 is shown in FIG.
  • These electric compressors 100 and 200 are similar to the electric compressor 1 of the present invention in their basic structures, and are respectively a compression mechanism (not shown), and electric motors 101 and 201 that drive the compression mechanism, Housings 102 and 202 for accommodating the compression mechanism and the electric motors 101 and 201 are provided.
  • the electric motors 101 and 201 have stators 103 and 203 and rotors 104 and 204, respectively.
  • the stators 103 and 203 include stator cores 105 and 205 whose side surfaces are cylindrical, and the rotors 104 and 204 have a drive shaft 106. , 206, and is disposed so as to be rotatable integrally with the drive shafts 106, 206 inside the stators 103, 203.
  • the electric compressors 100 and 200 have attachment feet 107 and 108 or attachment feet 207 and 208 in order to fix and mount the electric compressors 100 and 200 on the vehicle.
  • the stator cores 17, 105, 205 and the housings 2, 102, 202 are fixed by, for example, shrink fitting of shrink fitting. Yes. That is, the inner diameters of the housings 2, 102, 202 are formed slightly smaller than the outer diameters of the stator cores 17, 105, 205, and the housings 2, 102, 202 are thermally expanded by bringing them to a high temperature state.
  • stator cores 17, 105, and 205 at room temperature are fitted into the chambers 2, 102, and 202, and then the housings 2, 102, and 202 are contracted by returning the housings 2, 102, and 202 to room temperature, and the stator cores 17, 105, and 205 are contracted. Is fixed to the housing 2, 102, 202.
  • the electric compressor 100 of Reference Example 1 has six recesses 109 formed in the circumferential direction of the inner peripheral surface of the housing 102 on the stator core 105 side of the housing 102.
  • Two stator holding portions 110 are arranged at substantially equal intervals along the circumferential direction of the inner peripheral surface of the housing 102. That is, the electric compressor 100 of Reference Example 1 is configured such that the inner peripheral surface of the housing 102 and the outer peripheral surface of the stator core 105 are in partial contact.
  • the pressing force acting on the stator core 105 by the housing 102 during the shrink-fitting is concentrated on the six stator holding portions 110, so the pressing force acting on the stator core 105
  • the stator core 105 is deformed into a substantially polygonal shape (for example, a substantially hexagonal shape). Therefore, as shown in FIG. 5, according to the measurement results under a predetermined condition, the degree of deformation of the stator core 105 after shrink fitting with respect to the perfect circle is 1.3 points. It is beyond the allowable range.
  • the electric compressor 200 of Reference Example 2 does not have a concave portion corresponding to the concave portion 107 of the electric compressor 100 of Reference Example 1 on the inner peripheral surface of the housing 202.
  • the surface is in contact with the outer peripheral surface of the stator core 205 over the entire periphery. For this reason, it is avoided that the deformation amount of the stator core 205 increases due to the partial contact range between the housing 202 and the stator core 205 as in the electric compressor 100 of Reference Example 1.
  • the electric compressor 200 has mounting feet 207 and 208, and the portion of the housing 202 having the mounting feet 207 and 208 is thicker than the other portions of the housing 202. Since the thickness is increased, the structure has strength increasing portions 209 and 210. For this reason, in the strength increasing portions 209 and 210 of the housing 202, the pressing force acting on the stator core 205 becomes stronger than the other portions of the housing 202. For this reason, in the stator core 205, the amount of deformation of the portion that contacts the strength-increasing portions 209 and 210 of the housing is larger than other portions, and a portion that is partially distorted inward is generated in the stator core 205. Therefore, as shown in FIG. 5, according to the measurement result under a predetermined condition, the degree of deformation of the stator core 205 after shrink fitting with respect to the perfect circle is 0.8 point, and the deformation that can be allowed as the stator core. The amount is not up.
  • the housing 2 has strength increasing portions 27 and 28 by the mounting feet 21 and 22, and the mounting feet 21 and 22 of the housing 2, the stator core 17, and the like.
  • the recesses 23 and 24 are provided as non-contact portions with the stator core 17 between them.
  • the mounting feet 21 and 22 are not formed with the ribs 25 and 26. Yes.
  • the housing 2 has the intensity
  • Concave portions 23 and 24 are provided as non-contact portions between the stator cores 17 and 22 and the stator core 17, and ribs 25 and 26 are formed on the mounting feet 21 and 22.
  • the strength of the housing 2 is supplemented by the ribs 25 and 26 even if the recesses 23 and 24 are provided in the housing 2.
  • the degree of deformation of the stator core 17 after shrink fitting with respect to the perfect circle is 0.3 points.
  • the numerical value is slightly worse than that of the present invention 1, the numerical value can be kept significantly reduced as compared with the reference example 1 and the reference example 2.
  • the contact ratio in the circumferential direction between the stator core 17 and the housing 2 is changed over the entire circumference of the stator core 17 and the housing 2. Even if there are strength increasing portions 27 and 28 in the housing 2, the partial deformation of the stator core 17 can be suppressed while being close to the case of contact.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Le problème décrit par la présente invention consiste à fournir un compresseur électrique qui a une forme telle que le rapport de contact entre un noyau de stator et un boîtier dans une direction circonférentielle est quasiment un plein contact périphérique entre le noyau de stator et le boîtier, et dans lequel une déformation partielle du noyau de stator peut être réduite au minimum même lorsque la résistance du logement augmente partiellement en raison de la structure du boîtier. La solution selon l'invention porte sur un compresseur électrique (1), dans lequel un moteur électrique (4) et un mécanisme de compression (3) sont logés dans un boîtier (2), et un noyau de stator (17) d'un stator (15) constituant le moteur électrique (4) est fixé par ajustement serré avec le boîtier (2), le boîtier (2) comportant des sections (27, 28) d'augmentation de la résistance, dans lesquelles la résistance mécanique est augmentée de sorte à être supérieure à celle d'autres sections par fixation de parties pattes (21, 22), et des parties concaves (23, 24) comme sections qui n'entrent pas en contact avec la surface périphérique externe du noyau de stator (17) sont formées dans les sections où une force de pression agit sur le côté noyau de stator (17) à partir des côté section (27, 28) d'augmentation de la résistance dans l'état d'ajustement serré.
PCT/JP2016/067318 2015-06-12 2016-06-10 Compresseur électrique WO2016199884A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017523710A JPWO2016199884A1 (ja) 2015-06-12 2016-06-10 電動圧縮機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-119584 2015-06-12
JP2015119584 2015-06-12

Publications (1)

Publication Number Publication Date
WO2016199884A1 true WO2016199884A1 (fr) 2016-12-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/067318 WO2016199884A1 (fr) 2015-06-12 2016-06-10 Compresseur électrique

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JP (1) JPWO2016199884A1 (fr)
WO (1) WO2016199884A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564385A (zh) * 2019-09-25 2021-03-26 日本电产株式会社 驱动装置
WO2022131269A1 (fr) * 2020-12-18 2022-06-23 ダイキン工業株式会社 Procédé de fabrication de structure fixe de moteur, structure fixe de moteur, compresseur, et dispositif de réfrigération
WO2024062859A1 (fr) * 2022-09-22 2024-03-28 サンデン株式会社 Compresseur électrique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014513772A (ja) * 2011-05-19 2014-06-05 株式会社ヴァレオジャパン 埋込み固定手段を有するモジュール式電動コンプレッサ
JP2014240613A (ja) * 2013-06-11 2014-12-25 カルソニックカンセイ株式会社 ガイド部材及びこれを用いた電動圧縮機の組み付け方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014513772A (ja) * 2011-05-19 2014-06-05 株式会社ヴァレオジャパン 埋込み固定手段を有するモジュール式電動コンプレッサ
JP2014240613A (ja) * 2013-06-11 2014-12-25 カルソニックカンセイ株式会社 ガイド部材及びこれを用いた電動圧縮機の組み付け方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112564385A (zh) * 2019-09-25 2021-03-26 日本电产株式会社 驱动装置
JP2021052523A (ja) * 2019-09-25 2021-04-01 日本電産株式会社 駆動装置
JP7351167B2 (ja) 2019-09-25 2023-09-27 ニデック株式会社 駆動装置
CN112564385B (zh) * 2019-09-25 2024-05-17 日本电产株式会社 驱动装置
WO2022131269A1 (fr) * 2020-12-18 2022-06-23 ダイキン工業株式会社 Procédé de fabrication de structure fixe de moteur, structure fixe de moteur, compresseur, et dispositif de réfrigération
JP2022096754A (ja) * 2020-12-18 2022-06-30 ダイキン工業株式会社 モータ固定構造の製造方法、モータ固定構造、圧縮機、および冷凍装置
JP7252477B2 (ja) 2020-12-18 2023-04-05 ダイキン工業株式会社 モータ固定構造、圧縮機、および冷凍装置
WO2024062859A1 (fr) * 2022-09-22 2024-03-28 サンデン株式会社 Compresseur électrique

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