WO2022101975A1 - 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法 - Google Patents

固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法 Download PDF

Info

Publication number
WO2022101975A1
WO2022101975A1 PCT/JP2020/041913 JP2020041913W WO2022101975A1 WO 2022101975 A1 WO2022101975 A1 WO 2022101975A1 JP 2020041913 W JP2020041913 W JP 2020041913W WO 2022101975 A1 WO2022101975 A1 WO 2022101975A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
stator
stator core
compressor
electrical steel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2020/041913
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
泰樹 橋本
敏充 飯田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2022561719A priority Critical patent/JPWO2022101975A1/ja
Priority to PCT/JP2020/041913 priority patent/WO2022101975A1/ja
Publication of WO2022101975A1 publication Critical patent/WO2022101975A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Definitions

  • the present disclosure relates to a stator core in which a plurality of electrical steel sheets are laminated, a stator and a compressor having the stator core, and a method for manufacturing a compressor using the stator core.
  • Patent Document 1 discloses a stator core in which a plurality of electrical steel sheets are laminated and resin-filled holes are formed.
  • a plurality of electrical steel sheets are fixed by the resin material flowing in from the resin filling holes.
  • the present disclosure solves the above-mentioned problems, and is a stator core having improved rigidity, a stator and a compressor having a stator core having improved rigidity, and a compressor for improving the rigidity of the stator core. It is an object of the present invention to provide the manufacturing method of.
  • the stator core of the present disclosure includes an annular first core having a plurality of laminated first electromagnetic steel sheets and an annular second core laminated on the first core, and the first core is the same. It has a resin filling hole that penetrates the first core in the stacking direction of the plurality of first electrical steel sheets and is closed by the second core.
  • stator of the present disclosure includes the above-mentioned stator core.
  • the compressor of the present disclosure includes the above-mentioned stator.
  • the method for manufacturing a compressor of the present disclosure is the above-mentioned method for manufacturing a compressor having a stator core, which includes a shrink fitting step of shrinking the stator core into the housing of the compressor and the shrink fitting. After the step, a curing step of flowing a resin material through the resin filling hole to cure the stator core is included.
  • the resin filling hole penetrating the first iron core is closed by the second iron core, the resin material flowing into the resin filling hole is dammed by the second iron core, and the resin filling hole is filled in the gap of the electrical steel sheet. It flows. Therefore, since the inflow amount of the resin material from the resin filling hole into the gap of the electromagnetic steel sheet can be increased, the rigidity of the stator core can be improved.
  • the resin material is flowed through the resin filling hole of the above-mentioned stator core to harden the stator core, so that the shrinkage stress is obtained. Therefore, the separation of the adjacent first electromagnetic steel sheet can be suppressed. Therefore, in the manufacturing method of the present disclosure, the separation of the adjacent first electrical steel sheet due to the shrinkage stress can be suppressed, so that the rigidity of the stator core can be improved.
  • FIG. 3 is a cross-sectional view taken along the line BB of FIG. It is a side view of the stator core which concerns on embodiment.
  • FIG. 1 is a cross-sectional view schematically showing the structure of a closed-type compressor as a compressor 100 equipped with a stator core 50 according to an embodiment.
  • the compressor 100 is used in, for example, a refrigerating cycle device such as an air conditioner.
  • a single cylinder type rotary compressor is exemplified in FIG. 1, a multi-cylinder type rotary compressor may be used, a reciprocating compressor, a scroll compressor, or the like. May be.
  • the compressor 100 is formed as a vertical compressor, but it may be a horizontal compressor.
  • the compressor 100 has a closed container 1, a compression mechanism 3, an electric mechanism 5, and a crankshaft 7 that connects the compression mechanism 3 and the electric mechanism 5.
  • the compression mechanism 3, the electric mechanism 5, and the crankshaft 7 are housed in the closed container 1. Further, the compressor 100 has a suction muffler 9 provided outside the closed container 1.
  • the closed container 1 has a lower container 1a and an upper container 1b.
  • the upper container 1b seals and covers the upper opening of the lower container 1a.
  • the upper container 1b is fixed to the lower container 1a by welding or the like.
  • the lower container 1a is formed in the shape of a bottomed cylinder.
  • a suction pipe 11 is connected between the lower container 1a and the suction muffler 9.
  • the suction pipe 11 is a refrigerant pipe that allows low-temperature low-pressure refrigerant gas to flow into the compression mechanism 3 via the suction muffler 9. Further, in the bottom of the lower container 1a, refrigerating machine oil that functions as lubricating oil for the compressor 100 is stored.
  • a discharge pipe 13 is connected to the upper container 1b.
  • the discharge pipe 13 is a refrigerant pipe that discharges the high-temperature and high-pressure refrigerant gas compressed by the compression mechanism 3 from the closed container 1.
  • the upper container 1b is provided with a glass terminal 15 as an input / output interface for supplying electric power to the electric mechanism 5 from the outside and transmitting / receiving an electric signal for driving the electric mechanism 5.
  • the compression mechanism 3 is fixed to the lower container 1a by shrink fitting or the like.
  • the compression mechanism 3 has a cylinder 30, a rolling piston 31, a main bearing 32, an auxiliary bearing 33, and a discharge muffler 34. Further, although not shown, the compression mechanism 3 has a vane.
  • the cylinder 30 is formed in a cylindrical shape and has a hollow portion with both ends open in the axial direction.
  • a suction hole 30a is formed in the cylinder 30 by connecting the suction pipe 11 and communicating with the hollow portion.
  • An eccentric portion 7a of the crankshaft 7 is rotatably housed in the hollow portion of the cylinder 30. Further, although not shown, the cylinder 30 is provided with a groove communicating with the hollow portion, and the vane is slidably accommodated.
  • the rolling piston 31 is housed in the hollow portion of the cylinder 30 and is fitted to the outer peripheral surface of the eccentric portion 7a of the crankshaft 7.
  • the rolling piston 31 rotates eccentrically in conjunction with the rotation of the crankshaft 7.
  • a cylinder chamber is formed between the cylinder 30 and the rolling piston 31.
  • One end of the vane comes into contact with the outer circumference of the rolling piston 31, and the vane reciprocates in the groove of the cylinder 30 in conjunction with the eccentric rotation of the rolling piston 31.
  • a suction chamber which is a low pressure space and a compression chamber which is a high pressure space are formed in the cylinder chamber.
  • the suction chamber is formed in the cylinder chamber so as to communicate with the suction hole 30a.
  • the main bearing 32 and the auxiliary bearing 33 slidably support the crankshaft 7.
  • the main bearing 32 closes one opening of the hollow portion of the cylinder 30.
  • the main bearing 32 has a communication hole, which communicates with the compression chamber formed in the cylinder chamber of the cylinder 30.
  • the main bearing 32 is provided with a discharge valve formed of a leaf spring or the like.
  • the communication hole of the main bearing 32 is covered with a discharge valve.
  • the auxiliary bearing 33 closes the other opening of the hollow portion of the cylinder 30.
  • the discharge muffler 34 is attached to the main bearing 32, and reduces the passing noise of the gas refrigerant flowing in from the communication hole of the main bearing 32.
  • the discharge muffler 34 is formed with a discharge hole 34a for discharging the gas refrigerant flowing into the discharge muffler 34.
  • the electric mechanism 5 has a stator 5a having a hollow cylindrical shape and a rotor 5b rotatably provided in the hollow portion of the stator 5a.
  • the electric mechanism 5 is formed as a brushless type DC motor.
  • the electric mechanism 5 is arranged on the upper side of the compression mechanism 3, but may be arranged on the lower side of the compression mechanism 3.
  • the stator 5a has a stator core 50, a coil 51, and an insulator 52.
  • the stator core 50 is formed in a hollow cylindrical shape and is fixed to the lower container 1a. At the fixed position between the stator core 50 and the lower container 1a, the diameter of the outer peripheral surface of the stator core 50 is formed to be larger than the diameter of the inner peripheral wall of the lower container 1a, and is formed into the lower container 1a by shrink fitting. It is fixed. Although not shown, a through groove can be formed on the outer peripheral surface of the stator core 50 so as to open toward the inner peripheral wall of the lower container 1a and penetrate from the upper surface to the lower surface of the stator core 50. By forming a through groove on the outer peripheral surface of the stator core 50, the gas refrigerant discharged from the compression mechanism 3 can be guided to the discharge pipe 13. Other detailed structures of the stator core 50 will be described later.
  • the coil 51 is formed by winding a wire such as a copper wire around the stator core 50 via insulators 52 provided at the upper and lower ends of the stator core 50.
  • a lead wire 53 for supplying electric power to the stator 5a is provided between the stator 5a and the glass terminal 15, and the coil 51 and the glass terminal 15 are electrically connected by the lead wire 53.
  • the rotor 5b has a rotor core 54, a balance weight 55, a rivet 56, and an oil separation plate 57.
  • the rotor core 54 is formed into a hollow cylindrical shape by laminating hollow disk-shaped electromagnetic steel sheets that have been punched and molded.
  • the rotor core 54 is fixed to the outer peripheral surface of the crankshaft 7.
  • the diameter of the inner peripheral wall of the rotor core 54 is formed to be smaller than the diameter of the outer peripheral surface of the crankshaft 7, and is fixed to the crankshaft 7 by shrink fitting.
  • the rotor core 54 is provided with a first through hole 54a into which the permanent magnet 58 is inserted. Further, the rotor core 54 is provided with a second through hole 54b for guiding the gas refrigerant discharged from the compression mechanism 3 to the discharge pipe 13. Further, the rotor core 54 is provided with a third through hole 54c into which the rivet 56 is inserted.
  • the balance weight 55 is a balancer that cancels out the unbalanced centrifugal force of the crankshaft 7 generated when the rolling piston 31 rotates.
  • the balance weight 55 has a first balance weight 55a arranged at the upper end of the rotor core 54 and a second balance weight 55b arranged at the lower end of the rotor core 54.
  • the balance weight 55 is provided with an opening that communicates with the second through hole 54b. Further, the balance weight 55 is provided with an opening communicating with the third through hole 54c separately from the opening communicating with the second through hole 54b.
  • the balance weight 55 can also be a terminal member for closing the first through hole 54a.
  • the balance weight 55 By using the balance weight 55 as a terminal member, it is possible to prevent the permanent magnet 58 from being detached from the first through hole 54a.
  • the balance weight 55 and the terminal member may be formed as separate parts.
  • the rivet 56 is a fastening member that fastens and integrates the rotor core 54 and the balance weight 55.
  • the rivet 56 is inserted into the third through hole 54c of the rotor core 54 and the opening of the balance weight 55, and is fastened to the rotor core 54 and the balance weight 55 by plastically deforming one end.
  • the oil separation plate 57 is arranged above the first balance weight 55a.
  • the oil separation plate 57 separates the refrigerating machine oil contained in the high-pressure gas refrigerant discharged from the compression mechanism 3 by the centrifugal force generated when the crankshaft 7 rotates.
  • the separated refrigerating machine oil falls due to the action of gravity and is re-stored in the bottom of the lower container 1a. For example, a part of the separated refrigerating machine oil passes through the opening of the second through hole 54b of the rotor core 54 and the balance weight 55 and falls.
  • the crankshaft 7 is a drive shaft that transmits the rotational driving force of the rotor 5b of the electric mechanism 5 to the rolling piston 31 of the compression mechanism 3 to eccentrically rotate the rolling piston 31.
  • the crankshaft 7 is formed with an oil hole extending in the axial direction from the lower end of the crankshaft 7 and through which refrigerating machine oil flows.
  • a centrifugal pump is arranged at the lower end of the crankshaft 7. The centrifugal pump sucks up the refrigerating machine oil stored in the bottom of the lower container 1a by the rotation of the crankshaft 7, and sends it to the oil hole of the crankshaft 7. Due to the rotation of the crankshaft 7, the refrigerating machine oil flows into the oil hole of the crankshaft 7 via the centrifugal pump, for example, the gap portion between the crankshaft 7 and the main bearing 32, and the crankshaft 7 and the auxiliary bearing 33. It is supplied as lubricating oil to the gap between the two.
  • the suction muffler 9 functions as an accumulator having a refrigerant storage function for storing excess refrigerant and a gas-liquid separation function for temporarily retaining liquid refrigerant generated when the operating state changes.
  • the gas-liquid separation function of the suction muffler 9 can prevent a large amount of liquid refrigerant from flowing into the closed container 1 and causing liquid compression by the compressor 100.
  • the suction muffler 9 also has a function as a silencer that reduces or eliminates the flow noise of the refrigerant passing through the inside of the suction muffler 9.
  • the suction muffler 9 can be omitted depending on the application of the compressor 100 and the like.
  • the rolling piston 31 housed inside the cylinder 30 of the compression mechanism 3 rotates eccentrically.
  • the vane in contact with the rolling piston 31 reciprocates in the groove of the cylinder 30 in conjunction with the eccentric rotation of the rolling piston 31.
  • the low-pressure gas refrigerant that has flowed into the compression mechanism 3 from the suction pipe 11 flows into the cylinder chamber of the cylinder 30, and is compressed into the high-pressure gas refrigerant by the eccentric rotation of the rolling piston 31 and the reciprocating motion of the vanes.
  • the high-pressure gas refrigerant flows into the discharge muffler 34 from the communication hole of the main bearing 32 through the discharge valve, and is discharged to the outside of the compression mechanism 3 from the discharge hole 34a of the discharge muffler 34.
  • the high-pressure gas refrigerant discharged to the outside of the compression mechanism 3 is guided to the discharge pipe 13 through the second through hole 54b of the electric mechanism 5, and is discharged from the discharge pipe 13.
  • FIG. 2 is a top view of the stator core 50 according to the embodiment.
  • FIG. 3 is an enlarged view of the region A of FIG.
  • FIG. 4 is a cross-sectional view taken along the line BB of FIG.
  • FIG. 5 is a side view of the stator core 50 according to the embodiment.
  • the stator core 50 has an annular first core 50a and an annular second core 50b laminated on the first core 50a.
  • a plurality of mounting holes 50a1 for mounting the insulator 52 shown in FIG. 1 are formed in the first iron core 50a.
  • the first iron core 50a is formed by laminating a plurality of first electromagnetic steel sheets 60.
  • the first electrical steel sheet 60 is formed in an annular shape by, for example, a plurality of adjacent first steel sheet segments 65 being connected by caulking or welding at the first connecting portion 65a.
  • the first connecting portion 65a of the first steel plate segment 65 is alternately arranged with the first connecting portion 65a of the adjacent first steel plate segment 65.
  • the first steel plate segment 65 is manufactured by punching a silicon steel plate or the like having a thickness of 0.1 to 0.7 mm, which contains a small amount of silicon of about 0.5 to 6.5% in iron. ..
  • the first steel plate segment 65 may be formed by punching in a shape in which the first steel plate segment 65 is connected in an annular shape or a strip shape.
  • each first core segment 68 has an arc-shaped first core back 68a forming an outer peripheral surface of the first core 50a.
  • the first core back 68a is fixed to the inner peripheral wall of the lower container 1a of the closed container 1 shown in FIG. 1 by shrink fitting.
  • each first core segment 68 has a first teeth 68b extending toward the center of the stator core 50.
  • the first teeth 68b is formed in a T shape.
  • the first teeth 68b are arranged at the tip of the first base wall 68b1 extending from the first core back 68a toward the center of the stator core 50 and the tip of the first base wall 68b1 to form the inner peripheral wall of the stator core 50. It has a first tip wall 68b2.
  • the first tip wall 68b2 extends from the tip of the first base wall 68b1 on both sides toward the circumferential direction of the stator core 50.
  • the second iron core 50b is formed of one or more second electrical steel sheets 70.
  • the second core 50b is formed of a plurality of second electrical steel sheets 70
  • the second core 50b is formed by laminating a plurality of second electrical steel sheets 70.
  • the second electromagnetic steel plate 70 is formed in an annular shape by, for example, a plurality of adjacent second steel plate segments 75 being connected by caulking or welding at the second connecting portion 75a.
  • the second connecting portion 75a of the second steel plate segment 75 is alternately arranged with the second connecting portion 75a of the adjacent second steel plate segment 75.
  • the second steel plate segment 75 is manufactured by punching a silicon steel plate or the like in the same manner as the first steel plate segment 65. Further, since the second steel plate segment 75 is hidden under the first steel plate segment 65, the position of the second steel plate segment 75 is shown by a dotted leader in FIG. 2.
  • each second core segment 78 has an arc-shaped second core back 78a forming an outer peripheral surface of the second core 50b.
  • the second core back 78a is formed in the same shape as the first core back 68a.
  • the second core back 78a is fixed to the inner peripheral wall of the lower container 1a of the closed container 1 shown in FIG. 1 by shrink fitting. Since the second core back 78a is hidden under the first core back 68a, the position of the second core back 78a is shown by a dotted leader in FIG. 2.
  • each second core segment 78 has a second teeth 78b extending in the central direction of the stator core 50.
  • the second teeth 78b is formed in a T-shape and has the same shape as the first teeth 68b.
  • the second teeth 78b are arranged at the tip of the second base wall 78b1 extending from the second core back 78a toward the center of the stator core 50 and the tip of the second base wall 78b1 to form the inner peripheral wall of the stator core 50. It has a second tip wall 78b2.
  • the second tip wall 78b2 extends from the tip of the second base wall 78b1 to both sides in the circumferential direction of the stator core 50.
  • a wire forming the coil 51 is wound around the first base wall 68b1 and the second base wall 78b1 via the insulator 52 shown in FIG. Since the second teeth 78b are hidden under the first teeth 68b, in FIG. 2, the positions of the second teeth 78b, the second base wall 78b1, and the second tip wall 78b2 are shown by dotted lines. It is shown by a leader line.
  • the first iron core 50a is formed with resin filling holes 60a penetrating in the stacking direction of the plurality of first electromagnetic steel sheets 60.
  • the resin filling hole 60a is filled with a resin material for fixing the first electrical steel sheet 60 and the second electrical steel sheet 70.
  • a resin material for example, a resin composition containing a thermosetting resin such as an epoxy resin is used.
  • FIG. 4 the flow of the resin material filled from the resin filling hole 60a is shown by a dotted line.
  • the resin material is filled in the gap between the laminated first electromagnetic steel sheet 60 and the second electromagnetic steel sheet 70. Further, the resin material is filled in the gap formed in the first connecting portion 65a of the first steel plate segment 65 and the gap formed in the second connecting portion 75a of the second steel plate segment 75. Therefore, by filling the resin filling hole 60a with the resin material, the gap formed in the stator core 50 can be filled with the resin material, so that the rigidity of the stator core 50 can be improved. Therefore, it is possible to suppress the resonance due to the decrease in the rigidity of the stator core 50 and suppress the generation of noise due to the resonance of the stator core 50.
  • the manufacturing efficiency of the stator core 50 is improved, but a gap is generated between the first connecting portion 65a and the second connecting portion 75a.
  • the rigidity of the stator core 50 decreases.
  • the resin filling holes 60a with the resin material, the gaps formed in the first connecting portion 65a of the first steel plate segment 65 and the gaps formed in the second connecting portion 75a of the second steel plate segment 75 are filled.
  • the resin material is filled. Therefore, by filling the resin filling hole 60a with the resin material, both the improvement of the manufacturing efficiency of the stator core 50 and the improvement of the rigidity of the stator core 50 can be ensured.
  • the resin filling hole 60a in the stator core 50 is closed by the second core 50b. That is, the second iron core 50b has a terminal portion 50b1 that closes the resin filling hole 60a.
  • the resin material flowing into the resin filling hole 60a is dammed by the second iron core 50b and flows from the resin filling hole 60a into the gap formed in the stator core 50. .. Therefore, since the amount of the resin material flowing into the gap formed in the stator core 50 can be increased, the rigidity of the stator core 50 can be further improved.
  • the resin filling holes 60a are formed, for example, at one end or both ends in the circumferential direction of the first core back 68a.
  • the resin filling hole 60a is formed in the first core back 68a, the magnetic force generated in the first base wall 68b1 and the second base wall 78b1 is reduced by the interference of the resin material filled in the resin filling hole 60a. Can be suppressed.
  • the resin filling holes 60a are formed at both ends of the first core back 68a in the circumferential direction, the uniformity of the inflow amount of the resin material can be improved.
  • one end of the stator core 50 for example, from the upper end of the stator core 50 to the other end of the stator core 50, for example, the lower end of the stator core 50.
  • a first recess 50c extending axially toward the surface is formed.
  • the first recess 50c can be formed on the outer peripheral surface of the first iron core 50a along the laminating direction of the first electromagnetic steel sheet 60, and can be formed, for example, on the outer peripheral surface at the center of the circumferential direction of the first core back 68a.
  • the first recess 50c is formed, for example, by cutting.
  • the first recess 50c can be formed only on the outer peripheral surface of the first core back 68a at the center in the circumferential direction. That is, the first recess 50c may not be formed on the outer peripheral surfaces of both ends in the circumferential direction of the first core back 68a, and the outer peripheral surfaces of both ends in the circumferential direction of the first core back 68a may be unprocessed regions.
  • the shrinkage fitting allowance between the stator core 50 and the closed container 1 can be reduced, so that when the stator core 50 is fixed to the closed container 1.
  • the shrinkage stress generated in the stator core 50 of the above can be reduced. Therefore, by forming the first recess 50c on the outer peripheral surface of the first core 50a, the shrinkage stress generated in the stator core 50 can be reduced, so that iron loss in the stator core 50 can be suppressed. Further, by forming the first recess 50c on the outer peripheral surface at the center of the circumferential direction of the first core back 68a, it is possible to suppress a decrease in the rigidity of the stator core 50.
  • the first recess 50c is formed only on the outer peripheral surface at the center of the circumferential direction of the first core back 68a, and is not formed on the outer peripheral surfaces at both ends in the circumferential direction of the first core back 68a. A distance from the gap of the connecting portion 65a can be secured. Therefore, by forming the first recess 50c only on the outer peripheral surface at the center of the circumferential direction of the first core back 68a and not on the outer peripheral surfaces at both ends in the circumferential direction of the first core back 68a, the rigidity of the stator core 50 is increased. The decrease can be further suppressed.
  • stator core 50 On the outer peripheral surface of the stator core 50, from the other end of the stator core 50, for example, the lower end of the stator core 50, one end of the stator core 50, for example, the upper end of the stator core 50.
  • a second recess 50d extending axially toward the surface is formed.
  • the second recess 50d is formed at intervals from the first recess 50c along the stacking direction of the first electromagnetic steel sheet 60.
  • the second recess 50d can be formed on the outer peripheral surface of the second iron core 50b along the stacking direction of the first electromagnetic steel sheet 60, and is formed, for example, in the center of the second core back 78a in the circumferential direction.
  • the second recess 50d is formed by, for example, cutting, in the same manner as the first recess 50c.
  • the second recess 50d is not formed on the outer peripheral surfaces of both ends of the second core back 78a in the circumferential direction, and the outer peripheral surfaces of both ends of the second core back 78a in the circumferential direction are unprocessed. It can also be an area. That is, in the stator core 50, the outer peripheral surfaces of both ends of the first core back 68a and the second core back 78a in the circumferential direction can be formed as unprocessed regions.
  • the shrinkage fitting allowance between the stator core 50 and the closed container 1 can be reduced, so that when the stator core 50 is fixed to the closed container 1.
  • the shrinkage stress generated in the stator core 50 of the above can be reduced. Therefore, by forming the second recess 50d on the outer peripheral surface of the second core 50b, the shrinkage stress generated in the stator core 50 can be reduced, so that iron loss in the stator core 50 can be suppressed. Further, by forming the second recess 50d on the outer peripheral surface at the center of the circumferential direction of the second core back 78a, it is possible to suppress a decrease in the rigidity of the stator core 50.
  • the distance between the second recess 50d and the gap between the second connecting portion 75a can be secured. Therefore, by not forming the second recess 50d on the outer peripheral surfaces of both ends in the circumferential direction of the second core back 78a, it is possible to further suppress the decrease in the rigidity of the stator core 50.
  • the second recess 50d is formed at a distance from the first recess 50c. That is, in the axial direction of the stator core 50, an unprocessed region 50e is secured between the first recess 50c and the second recess 50d. By securing the unprocessed region 50e between the first recess 50c and the second recess 50d, the unprocessed region 50e of the stator core 50 can be reliably fixed to the inner wall surface of the closed container 1 by heat caulking.
  • the second recess 50d may be formed only on the outer peripheral surface of the second iron core 50b, as shown in FIG. 5, of the second iron core 50b. It may extend to a part of the outer peripheral surface of the first iron core 50a via the outer peripheral surface.
  • the method for manufacturing the compressor 100 includes a shrink fitting step of shrinking the stator core 50 into the housing of the compressor 100, for example, a closed container 1, and after the shrink fitting step, a resin material is poured from the resin filling hole 60a and cured. It has a curing step to make it.
  • the rigidity of the stator core 50 can be improved by curing the stator core 50 with a resin material.
  • the stator core 50 cured with the resin material is shrink-fitted into the closed container 1, the portion cured with the resin material may be destroyed by the shrinkage stress.
  • stator core 50 by shrinking the stator core 50 into the closed container 1 and then flowing the resin material through the resin filling hole 60a to cure it, it is possible to suppress the destruction of the portion cured by the resin material. Therefore, according to the manufacturing method, the rigidity of the stator core 50 can be improved.
  • the resin filling hole 60a of the stator core 50 is closed by the second core 50b, it is possible to prevent the resin material from leaking to the outside of the stator core 50. Therefore, it is possible to improve the work efficiency at the time of manufacturing the compressor 100.
  • 68 1st core segment 68a 1st core back, 68b 1st tooth, 68b1 1st base wall, 68b2 1st tip wall, 70 2nd electrical steel sheet, 75 2nd steel sheet segment, 75a 2nd connecting part, 78th 2 iron core segment, 78a 2nd core back, 78b 2nd teeth, 78b1 2nd base wall, 78b2 2nd tip wall, 100 compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
PCT/JP2020/041913 2020-11-10 2020-11-10 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法 Ceased WO2022101975A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022561719A JPWO2022101975A1 (https=) 2020-11-10 2020-11-10
PCT/JP2020/041913 WO2022101975A1 (ja) 2020-11-10 2020-11-10 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/041913 WO2022101975A1 (ja) 2020-11-10 2020-11-10 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法

Publications (1)

Publication Number Publication Date
WO2022101975A1 true WO2022101975A1 (ja) 2022-05-19

Family

ID=81600849

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/041913 Ceased WO2022101975A1 (ja) 2020-11-10 2020-11-10 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法

Country Status (2)

Country Link
JP (1) JPWO2022101975A1 (https=)
WO (1) WO2022101975A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2024004510A1 (https=) * 2022-06-28 2024-01-04

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005080451A (ja) * 2003-09-02 2005-03-24 Matsushita Electric Ind Co Ltd 電動機
JP2016111865A (ja) * 2014-12-09 2016-06-20 株式会社三井ハイテック 積層鉄心用積層体及びその製造方法並びに積層鉄心の製造方法
JP2020150627A (ja) * 2019-03-12 2020-09-17 日本電産株式会社 積層鉄心、ステータおよびロータ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005080451A (ja) * 2003-09-02 2005-03-24 Matsushita Electric Ind Co Ltd 電動機
JP2016111865A (ja) * 2014-12-09 2016-06-20 株式会社三井ハイテック 積層鉄心用積層体及びその製造方法並びに積層鉄心の製造方法
JP2020150627A (ja) * 2019-03-12 2020-09-17 日本電産株式会社 積層鉄心、ステータおよびロータ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2024004510A1 (https=) * 2022-06-28 2024-01-04
WO2024004510A1 (ja) * 2022-06-28 2024-01-04 三菱電機株式会社 固定子、回転電機、固定子の製造方法、および、回転電機の製造方法
JP7738758B2 (ja) 2022-06-28 2025-09-12 三菱電機株式会社 固定子、回転電機、固定子の製造方法、および、回転電機の製造方法

Also Published As

Publication number Publication date
JPWO2022101975A1 (https=) 2022-05-19

Similar Documents

Publication Publication Date Title
JP4143827B2 (ja) スクロール圧縮機
CN103237990B (zh) 封闭式压缩机及其制造方法
US10432050B2 (en) Motor rotor, and compressor motor and compressor incorporated with the motor rotor
US5998904A (en) Motor
US9581160B2 (en) Scroll compression device
WO2014083939A1 (ja) スクロール圧縮機
US9388808B2 (en) Scroll compression device
JP2010226830A (ja) 電動機及びそれを搭載した圧縮機
WO2008065802A1 (fr) Compresseur
JP5334555B2 (ja) 電動機及びそれを搭載した冷媒圧縮機
US9181947B2 (en) Compressor
WO2022101975A1 (ja) 固定子鉄心、固定子、圧縮機、及び圧縮機の製造方法
CN202579195U (zh) 回转式流体机械
JP6151324B2 (ja) 密閉型電動圧縮機
WO2018131088A1 (ja) 圧縮機
JP2003343439A (ja) 圧縮機
JPH09215236A (ja) ブラシレスｄｃモータ
WO2005028869A1 (en) Rotational motor and electric compressor
JP2014181592A (ja) 圧縮機
US10227982B2 (en) Scroll compression device
JP3096628B2 (ja) 密閉型回転圧縮機
JP5075733B2 (ja) スクロール圧縮機
JP5135779B2 (ja) 圧縮機
KR20120076133A (ko) 밀폐형 압축기 및 그의 제조방법
JP7038249B1 (ja) 圧縮機

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20961503

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022561719

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20961503

Country of ref document: EP

Kind code of ref document: A1