WO2017195523A1 - Compresseur - Google Patents

Compresseur Download PDF

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Publication number
WO2017195523A1
WO2017195523A1 PCT/JP2017/015079 JP2017015079W WO2017195523A1 WO 2017195523 A1 WO2017195523 A1 WO 2017195523A1 JP 2017015079 W JP2017015079 W JP 2017015079W WO 2017195523 A1 WO2017195523 A1 WO 2017195523A1
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WO
WIPO (PCT)
Prior art keywords
hollow shaft
stator core
stator
compressor
crankshaft
Prior art date
Application number
PCT/JP2017/015079
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English (en)
Japanese (ja)
Inventor
中川　和也
Original Assignee
日本電産テクノモータ株式会社
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 日本電産テクノモータ株式会社 filed Critical 日本電産テクノモータ株式会社
Publication of WO2017195523A1 publication Critical patent/WO2017195523A1/fr

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    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to a compressor.
  • Japanese Unexamined Patent Application Publication No. 2005-180367 discloses a compressor applied to a household refrigerator.
  • the compressor forms a reciprocating compression element.
  • the compression element has a block forming a cylinder, a piston, a shaft, and a connecting rod.
  • the piston is placed in a cylinder.
  • the shaft includes a main shaft portion and an eccentric portion that are pivotally supported by the bearing portion of the block.
  • the connecting rod connects the eccentric part and the piston.
  • Compressor has an electric element.
  • the electric element has a stator and a rotor.
  • the stator is connected to the inverter drive circuit.
  • the rotor contains a permanent magnet and is fixed to the main shaft portion.
  • the eccentric movement of the eccentric portion causes the piston to reciprocate in the cylinder via the connecting rod.
  • the refrigerant gas sucked into the cylinder is compressed.
  • JP-A-2005-180367 a compressor having an inner rotor type motor as an electric element is known.
  • a compressor when used for a refrigerator, it is desired to reduce the thickness of the compressor in order to increase the capacity of the refrigerator.
  • an object of the present invention is to provide a thin compressor in which a motor is appropriately assembled.
  • An exemplary compressor of the present invention includes a compression part having a crankshaft disposed along a central axis extending in the vertical direction, a base part in which the compression part is disposed, and rotating the crankshaft around the central axis. And a motor to be operated.
  • the base portion has a hollow shaft that extends in the vertical direction and is arranged around the crankshaft.
  • the motor includes a stator having a stator core disposed radially outward of the hollow shaft, and a rotor coupled to the crankshaft and disposed radially outward of the stator.
  • a positioning portion is interposed between the lower surface of the base portion and the upper surface of the stator core.
  • FIG. 1 is a schematic cross-sectional view of a compressor according to a first embodiment of the present invention.
  • FIG. 2 is an enlarged schematic plan view showing a part of a spiral member included in the compressor according to the first embodiment of the present invention.
  • FIG. 3 is a schematic plan view of the positioning portion of the compressor according to the first embodiment of the present invention as viewed from below.
  • FIG. 4 is a schematic diagram for explaining a modified example of the positioning portion of the first embodiment of the present invention.
  • FIG. 5 is a schematic view for explaining a modification of the stator core according to the first embodiment of the present invention.
  • FIG. 6 is a schematic diagram illustrating a state in which the lubricating liquid circulates in the compressor according to the first embodiment of the present invention.
  • FIG. 7 is a schematic cross-sectional view of a compressor according to the second embodiment of the present invention.
  • FIG. 8 is a schematic plan view of the hollow shaft of the compressor according to the second embodiment of the present invention as viewed from below.
  • FIG. 9 is a schematic cross-sectional view of a compressor according to the third embodiment of the present invention.
  • FIG. 10 is a schematic plan view illustrating a configuration of a fixing member included in the compressor 3 according to the third embodiment.
  • FIG. 11 is an enlarged schematic cross-sectional view showing a fixing structure using a fixing member.
  • FIG. 12A is a schematic plan view illustrating a fixing member of another example.
  • FIG. 12B is a schematic side view illustrating a fixing member of another example.
  • the direction along the central axis A (see FIG. 1 and the like) of the motor included in the compressor is defined as the vertical direction.
  • the radial direction and the circumferential direction around the central axis A of the motor included in the compressor are simply referred to as “radial direction” and “circumferential direction”.
  • the up-down direction is a direction defined for the convenience of explanation, and is not intended to limit the posture when the compressor according to the present invention is used. ⁇ 1. First Embodiment>
  • FIG. 1 is a schematic sectional view of a compressor 1 according to a first embodiment of the present invention.
  • the compressor 1 includes a sealed container 10.
  • the container 10 has the container main-body part 10a and the container cover 10b covered on the container main-body part 10a.
  • a lubricating liquid 11 such as oil is stored at the bottom of the container body 10a.
  • the container 10 is filled with a refrigerant gas.
  • the compressor 1 includes a compression unit 20, a base unit 30, and a motor 40.
  • the compression unit 20, the base unit 30, and the motor 40 are accommodated in the container 10.
  • the motor 40 is an outer rotor type motor.
  • the compression part 20 has a crankshaft 21 arranged along a central axis A extending in the vertical direction.
  • the crankshaft 21 is a hollow member.
  • the crankshaft 21 rotates around the central axis A.
  • the lower end of the crankshaft 21 is immersed in the lubricating liquid 11.
  • the compression unit 20 includes an eccentric portion 22, a rod 23, a piston 24, and a cylinder 25.
  • the eccentric portion 22 is connected to the crankshaft 21 and rotates around the central axis A as the crankshaft 21 rotates.
  • One end of the rod 23 is connected to the eccentric portion 22, and the other end is connected to the piston 24.
  • Piston 24 is arrange
  • the compression unit 20 is disposed in the base unit 30.
  • the base part 30 is comprised by the metal block, for example.
  • the base portion 30 is elastically supported by the container 10 via a spring 31.
  • the spring 31 is constituted by a compression coil spring extending in the vertical direction, for example.
  • the base portion 30 has a hollow shaft 301 that extends in the vertical direction and is arranged around the crankshaft 21.
  • the hollow shaft 301 is a bearing that rotatably supports the crankshaft 21.
  • the base 30 has a base opening 302 extending in the vertical direction at a substantially central portion.
  • the base opening 302 has a circular shape in a plan view from the up and down direction.
  • the hollow shaft 301 is inserted into the base opening 302 and protrudes downward from the base 30.
  • the upper part of the hollow shaft 301 is fixed to the base part 30.
  • the lower end portion of the crankshaft 21 protrudes below the lower end of the hollow shaft 301.
  • the motor 40 has a stator 41.
  • the stator 41 includes a stator core 411, an insulator 412, and a coil 413.
  • the stator core 411 is disposed radially outward of the hollow shaft 301.
  • the stator core 411 can be configured by stacking a plurality of magnetic steel plates, for example.
  • the stator core 411 is provided in an annular shape and has a through hole 411a at the center. A part of the hollow shaft 301 is inserted into the through hole 411a. The lower end portion of the hollow shaft 301 protrudes below the lower end of the stator core 411.
  • the outer peripheral surface of the hollow shaft 301 and the inner peripheral surface of the stator core 411 are fitted together.
  • the hollow shaft 301 is welded to the stator core 411 at the lower end surface portion of the stator core 411. Thereby, the stator 41 is fixed to the hollow shaft 301.
  • the insulator 412 covers at least a part of the stator core 411. In the present embodiment, the insulator 412 covers a part of the stator core 411.
  • the coil 413 is constituted by a conductive wire wound around the stator core 411 via an insulator 412.
  • the insulator 412 is a resin-made insulating member that electrically insulates the stator core 411 and the conductive wire constituting the coil 413.
  • the insulator 412 may be provided in a range that achieves at least the purpose of electrically insulating the stator core 411 and the conductive wire.
  • the stator core 411 has an exposed portion 411b on the radially inner side from the coil 413. The exposed portion 411b is not covered with the insulator 412.
  • the stator 41 has a resin upper cover 414 that covers a part of the stator core 411 and the coil 413 on the upper surface side.
  • the stator 41 has a resin lower cover 415 that covers a part of the stator core 411 and the coil 413 on the lower surface side thereof.
  • the upper cover 414 and the lower cover 415 are insulating members that electrically insulate the coil 413 and members disposed above and below the coil 413.
  • the exposed portion 411b is not covered by the upper cover 414 and the lower cover 415.
  • the motor 40 has a rotor 42.
  • the rotor 42 is connected to the crankshaft 21.
  • the rotor 42 is disposed radially outward of the stator 41.
  • the rotor 42 includes a magnet 421 that is disposed to face the outer side of the stator core 411 in the radial direction.
  • the rotor 42 has a cup-shaped main body 42a.
  • the crankshaft 21 is fixed to the central portion of the bottom wall of the main body portion 42a.
  • the crankshaft 21 penetrates the bottom wall of the main body portion 42 a and part of the crankshaft 21 protrudes downward from the rotor 42.
  • the magnet 421 is disposed on the inner wall of the main body 42a.
  • the magnet 421 may be composed of a plurality of magnet pieces arranged in the circumferential direction with respect to the main body portion 42a, or may be composed of a ring-shaped magnet.
  • a positioning portion 50 is interposed between the lower surface of the base portion 30 and the upper surface of the stator core 411.
  • the positioning unit 50 is located radially inward from the coil 413.
  • the positioning part 50 is a protruding part 303 that protrudes from the lower surface of the base part 30.
  • the lower end surface of the protrusion 303 is in contact with the upper surface of the stator core 411.
  • the protruding portion 303 is configured by bending a part of the base portion 30 downward.
  • the protrusion 303 extends in the vertical direction along the hollow shaft 301.
  • the protrusion 303 has an annular shape in a plan view from the vertical direction.
  • the inner surface of the protrusion 303 constitutes the base opening 302 described above.
  • the outer surface of the hollow shaft 301 and the inner surface of the protruding portion 303 are joined.
  • the positioning unit 50 positions the base unit 30 in the vertical direction with respect to the motor 40.
  • the positioning unit 50 positions the base unit 30 by contacting the stator core 411 having high rigidity. For this reason, the vertical positioning of the base portion 30 with respect to the motor 40 can be performed with high accuracy.
  • Insulating cover 414 or insulator 412 may be used in place of stator core 411 for positioning base portion 30 with respect to motor 40. However, as in this embodiment, it is preferable to use the stator core 411 having higher rigidity and molding accuracy than the resin insulating cover 414 and the insulator 412 in order to improve positioning accuracy.
  • the positioning part 50 is configured to be positioned radially inward from the coil 413, but this is merely an example.
  • the positioning unit 50 may be provided at another position that can contact the upper surface of the stator core 411.
  • the positioning part 50 may be located at the radially outer end of the stator core 411.
  • the positioning portion 50 is disposed radially inward as in this embodiment, the radial size of the stator 41 can be prevented from increasing.
  • the positioning part 50 may be constituted by a part other than the protruding part 303 protruding from the base part 30.
  • the positioning part 50 may be constituted by a spacer member interposed between the base part 30 and the stator core 411.
  • the spacer member may be a metal ring member, for example.
  • the positioning portion 50 is the protruding portion 303 as in the present embodiment, positioning can be performed without increasing the number of parts, which facilitates assembly work and is economical.
  • the positioning unit 50 may be configured by a protruding portion that protrudes upward from the stator core 411.
  • the compressor 1 includes a circulation mechanism that supplies the lubricating liquid 11 stored in the bottom of the container 10 to the elements constituting the compression unit 20.
  • the compressor 1 includes a spiral member 32 that extends in the vertical direction along the central axis A. As shown in FIG. 1, most of the spiral member 32 is inserted into the crankshaft 21. The spiral member 32 is fixed with respect to the base portion 30.
  • FIG. 2 is a schematic plan view showing an enlarged part of the spiral member 32 included in the compressor 1 according to the first embodiment of the present invention.
  • the spiral member 32 has a spiral protrusion 32a on its outer peripheral surface.
  • the outer diameter of the portion of the spiral member 32 where the protrusion 32 a is formed is substantially equal to the inner diameter of the crankshaft 21.
  • the spiral member 32 constitutes a spiral groove 32 b through which the lubricating liquid 11 passes between the spiral member 32 and the inner surface of the crankshaft 21.
  • the base portion 30 has a through hole 304 extending in the vertical direction on the outer side in the radial direction from the base opening portion 302.
  • the number of through holes 304 is not particularly limited, and may be one or more.
  • the positioning part 50 has an opening on its outer peripheral surface. As the opening, a notch, a hole, a hole, or the like can be considered.
  • FIG. 3 is a schematic plan view of the positioning unit 50 of the compressor 1 according to the first embodiment of the present invention as viewed from below. As shown in FIG. 3, in this embodiment, the positioning part 50 has the some opening part 50a in the lower end part. Specifically, the opening 50 a has a rectangular cut-out shape configured by cutting out a part of the region at the lower end of the positioning unit 50.
  • the number of openings 50a is not particularly limited, and may be one.
  • the shape of the opening 50a is not particularly limited, and the shape may be changed as appropriate.
  • At least one of the outer peripheral surface of the hollow shaft 301 and the inner peripheral surface of the stator core 411 is provided with a groove portion extending in the vertical direction.
  • a groove 301 a is provided on the outer peripheral surface of the hollow shaft 301.
  • the groove 301a extends in the vertical direction.
  • the groove 301a extends to a position overlapping the opening 50a in the vertical direction.
  • the groove 301a is provided at a position connected to the opening 50a in the circumferential direction.
  • the lower end of the groove 301 a is positioned at least below the lower end of the stator core 411. In the present embodiment, the lower end of the groove 301 a coincides with the lower end of the hollow shaft 301.
  • the number of the groove portions 301a is not particularly limited. In the present embodiment, the number is the same as the number of openings 50a.
  • the opening 50a may be a hole shape or a hole shape instead of the notch shape.
  • the positioning part 50 may have a hole shape or a hole shape as the opening 50a in addition to the notch shape.
  • FIG. 4 is a schematic diagram for explaining a modification of the positioning unit 50 according to the first embodiment of the present invention.
  • the positioning portion 50 shown in FIG. 4 has an opening 50b on the outer peripheral surface thereof.
  • the opening 50b is a through hole extending in the radial direction.
  • the groove 301a extends to a position overlapping the opening 50b in the vertical direction and is connected to the opening 50b.
  • FIG. 5 is a schematic diagram for explaining a modification of the stator core 411 according to the first embodiment of the present invention.
  • a groove portion 411c extending in the vertical direction is provided on the inner peripheral surface of the stator core 411.
  • a groove portion is not provided on the outer peripheral surface of the hollow shaft 301.
  • the groove 411 extends from the upper surface to the lower surface of the stator core 411.
  • the groove part 411c is provided in the position connected with the opening part 50a in the circumferential direction.
  • FIG. 6 is a schematic diagram showing how the lubricating liquid 11 circulates in the compressor 1 according to the first embodiment of the present invention.
  • the arrow indicates the direction in which the lubricating liquid 11 flows.
  • FIG. 6 is a diagram illustrating an example of the flow of the lubricating liquid 11.
  • the raised lubricating liquid 11 reaches the upper part of the crankshaft 21 and lubricates the operations of the elements constituting the compression part 20 such as the eccentric part 22.
  • the lubricating liquid 11 pumped up at the top falls, for example, from the outer peripheral end of the base 30 to the bottom of the container 10. Further, the lubricating liquid 11 pumped up at the top falls to the bottom of the container 10 through a route indicated by an arrow in FIG. Specifically, the lubricating liquid 11 falls from the elements constituting the compression unit 20 to the upper surface of the base unit 30.
  • the lubricating liquid 11 that has fallen on the upper surface of the base portion 30 passes through the through hole 304 and falls below the base portion 30.
  • the lubricant 11 that has fallen under the base portion 30 falls under the stator core 411 through the opening 50a and the groove portion 301a.
  • the lubricant 11 that has fallen under the stator core 411 falls to the bottom of the container 10 through a through hole extending in the vertical direction of the rotor 42.
  • the positioning part 50 is provided with an opening 50a that allows the lubricating liquid 11 to pass therethrough.
  • the hollow shaft 301 is provided with a groove portion 301 a that allows the lubricating liquid 11 to pass therethrough. For this reason, the lubricating liquid 11 can be circulated efficiently.
  • an outer rotor type motor 40 is used as a motor for operating the compression unit 20.
  • the outer rotor type motor can be made thinner in the axial direction than the inner rotor type motor having the same motor output. For this reason, the compressor 1 of this embodiment can achieve thickness reduction compared with the compressor in which an inner rotor type motor is used. ⁇ 2. Second Embodiment>
  • FIG. 7 is a schematic cross-sectional view of the compressor 2 according to the second embodiment of the present invention.
  • the compressor 2 of the second embodiment is substantially the same as the configuration of the compressor 1 of the first embodiment. Portions that overlap the configuration of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted unless particularly necessary.
  • the compressor 2 of 2nd Embodiment also has the base part 30 by which the compression part 20 is arrange
  • the hollow shaft 305 is inserted into the base opening 302 and protrudes downward from the base 30.
  • the hollow shaft 305 has a base 3051 and a tip 3052.
  • Base 3051 extends downward from base 30.
  • the distal end portion 3052 extends downward from the base portion 3051 and has a smaller radial width than the base portion 3051.
  • FIG. 8 is a schematic plan view of the hollow shaft 305 included in the compressor 2 according to the second embodiment of the present invention as viewed from below.
  • the base 3051 and the tip 3052 have a cylindrical shape extending in the vertical direction.
  • the center of the base 3051 and the center of the tip 3051 coincide with the central axis A.
  • the outer diameter of the base portion 3051 is larger than the outer diameter of the distal end portion 3052.
  • the outer diameter of the base portion 3051 is larger than the inner diameter of the through hole 411 a at the center of the stator core 411.
  • the outer diameter of the tip 3051 is smaller than or equal to the inner diameter of the through hole 411a. For this reason, the tip 3052 enters the through hole 411a, but the base 3051 does not enter the through hole 411a.
  • the upper end portion of the base portion 3051 is fixed to the base portion 30.
  • a part of the tip portion 3052 is put in the through hole 411a.
  • the lower end portion of the tip portion 3052 protrudes downward from the lower end of the stator core 411.
  • the outer peripheral surface of the tip portion 3052 and the inner peripheral surface of the stator core 411 are fitted together.
  • the distal end portion 3052 is welded to the stator core 411 at the lower end surface portion of the stator core 411. Thereby, the stator 41 is fixed to the hollow shaft 305.
  • a part of the base 3051 is located between the lower surface of the base portion 30 and the upper surface of the stator core 411.
  • the lower end surface of the base portion 3051 is in contact with the upper surface of the stator core 411.
  • the base 3051 positions the base 30 in the vertical direction with respect to the motor 40.
  • the positioning portion 51 is provided on the hollow shaft 305.
  • the positioning portion 51 is located on the radially inner side from the coil 413.
  • the positioning unit 51 positions the base unit 30 in the vertical direction with respect to the motor 40 by contacting the stator core 411 having high rigidity and molding accuracy. For this reason, the vertical positioning of the base portion 30 with respect to the motor 40 can be performed with high accuracy.
  • the positioning part 51 has an opening 51a on the outer peripheral surface thereof.
  • the positioning unit 51 has a plurality of openings 51a at the lower end.
  • the opening 51 a has a rectangular notch shape configured by notching a part of the region at the lower end of the positioning part 51.
  • the number of openings 51a is not particularly limited, and may be one.
  • the shape of the opening 51a is not particularly limited, and the shape may be changed as appropriate.
  • a groove portion 305 a is provided on the outer peripheral surface of the tip portion 3052.
  • the groove portion 305a extends in the vertical direction.
  • the groove 305a extends to a position overlapping the opening 51a in the vertical direction.
  • the groove part 305a is provided in the position connected with the opening part 51a in the circumferential direction.
  • the lower end of the groove 305 a is positioned at least below the lower end of the stator core 411. In the present embodiment, the lower end of the groove portion 305a coincides with the lower end of the tip portion 3052.
  • the number of the groove portions 305a is not particularly limited. In the present embodiment, the number is the same as the number of openings 51a.
  • a groove portion may be provided on the inner peripheral surface of the stator core 411.
  • the lubricating liquid 11 pumped to the top can be dropped to the bottom of the container 10 through the through hole 304, the opening 51 a, the groove 305 a, and the through hole extending in the vertical direction of the rotor 42. . For this reason, the lubricating liquid 11 can be circulated efficiently.
  • the opening 51a may have a hole shape or a hole shape instead of the notch shape.
  • the positioning part 51 may have a hole shape or a hole shape as the opening 51a in addition to the notch shape.
  • the opening provided in the outer peripheral surface of the positioning unit 51 may be a hole.
  • the hole is connected to a cavity extending upward from the lower end surface of the base 3051.
  • tip part 3052 is connected with an opening part through the said cavity part.
  • FIG. 9 is a schematic sectional view of the compressor 3 according to the third embodiment of the present invention.
  • the compressor 3 of the third embodiment is substantially the same as the configuration of the compressor 1 of the first embodiment. Portions that overlap the configuration of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted unless particularly necessary.
  • the third embodiment differs from the first embodiment in the method of fixing the stator 41 to the hollow shaft 301.
  • the hollow shaft 301 is welded and fixed to the stator core 411 at the lower end surface portion of the stator core 411.
  • the hollow shaft 301 is fixed to the stator 41 by the fixing member 60. That is, in the compressor 3, the fixing operation of the stator 41 with respect to the hollow shaft 301 can be performed more easily and cheaply than welding.
  • the fixing member 60 has an annular portion 61 and a protruding portion 62.
  • the annular portion 61 is disposed around the hollow shaft 301.
  • the protrusion 62 is provided on the annular portion 61 and extends in the vertical direction.
  • FIG. 10 is a schematic plan view illustrating the configuration of the fixing member 60 included in the compressor 3 according to the third embodiment.
  • FIG. 11 is an enlarged schematic cross-sectional view showing a fixing structure by the fixing member 60.
  • the fixing member 60 is made of metal, for example.
  • the annular part 61 has a first part 611 and a second part 612.
  • the first portion 611 is provided in a C shape.
  • the second portion 612 includes a pair of wall portions 612a and 612b that protrude radially outward from the two end portions of the first portion 611, respectively.
  • the pair of wall portions 612a and 612b protrude in parallel from the first portion 611 and are disposed to face each other.
  • the pair of wall portions 612a and 612b are provided with through holes at opposing positions.
  • Bolts 63 are passed through the through holes of the pair of wall portions 612a and 612b.
  • a nut 64 is attached to the tip of the bolt 63.
  • the fixing member 60 has a connecting portion 65 that protrudes in the radial direction from the outer peripheral surface of the annular portion 61.
  • the connecting portion 65 is provided on the opposite side of the position where the second portion 612 is provided.
  • the protruding portion 62 extends upward from the end portion of the connecting portion 65.
  • the stator 41 has an insertion hole 66 into which the protrusion 62 is inserted.
  • the insertion hole 66 extends in the vertical direction.
  • the stator core 411 has the insertion hole 66.
  • the present invention is not limited to this, and the insulator 412 may have an insertion hole.
  • the insertion hole 66 has a rectangular shape in plan view in accordance with the shape of the protrusion 62. The shape of the insertion hole 66 may be appropriately changed according to the shape of the protrusion 62.
  • the annular portion 61 When attaching the fixing member 60 to the lower end portion of the hollow shaft 301, the annular portion 61 is disposed at a position surrounding the hollow shaft 301. Further, the protrusion 62 is inserted into the insertion hole 66. In this state, when the bolt 63 is rotated in the tightening direction, the inner diameter of the annular portion 61 is reduced, and the fixing member 60 cannot be removed from the hollow shaft 301. Thereby, the stator 41 is supported by the fixing member 60. Further, the protrusion 62 prevents the stator 41 from rotating around the hollow shaft 301. That is, the stator 41 is fixed to the hollow shaft 301 by the fixing member 60.
  • the fixing member 60 can also be applied to the configuration of the second embodiment. That is, by using the fixing member 60, it is possible to fix the stator 41 to the hollow shaft 305 without performing welding in the compressor 2 of the second embodiment.
  • FIG. 12A is a schematic plan view illustrating a fixing member 70 according to another embodiment.
  • FIG. 12B is a schematic side view illustrating a fixing member 70 according to another embodiment.
  • the fixing member 70 also has an annular portion 71 and a protruding portion 72.
  • the annular portion 71 has an annular annular portion 711.
  • the annular portion 71 has a plurality of projecting pieces 712 that project radially inward from the inner periphery of the annular portion 711.
  • the plurality of protruding pieces 712 are arranged in the circumferential direction.
  • the fixing member 70 has a connecting portion 73 that protrudes in the radial direction from the outer peripheral surface of the annular portion 71.
  • the protruding portion 72 extends upward from the end portion of the connecting portion 73.
  • the annular portion 71 When attaching the fixing member 70 to the hollow shafts 301 and 305, the annular portion 71 is disposed at a position surrounding the hollow shafts 301 and 305. Further, the protrusion 72 is inserted into the insertion hole 66 provided in the stator 41.
  • the fixing member 70 when the hollow shafts 301 and 305 are inserted into the hole located at the center of the annular portion 711, the plurality of projecting pieces 712 are elastically deformed. The plurality of elastically deformed projecting pieces 712 have their distal ends bite into the outer surfaces of the hollow shafts 301 and 305 and are caught by the hollow shafts 301 and 305.
  • the fixing member 70 cannot be removed from the hollow shafts 301 and 305, and the stator 41 is supported by the fixing member 70. Further, the protrusion 72 prevents the stator 41 from rotating around the hollow shafts 301 and 305. That is, the stator 41 is fixed to the hollow shafts 301 and 305 by the fixing member 70. ⁇ 4. Other>
  • the present invention can be suitably used for a refrigerator, for example.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un compresseur qui comporte : une partie de compression qui comporte un vilebrequin agencé le long d'un axe central s'étendant verticalement ; une partie de base dans laquelle la partie de compression est disposée ; et un moteur qui fait tourner le vilebrequin autour de l'axe central. La partie de base comporte un arbre creux qui s'étend verticalement et qui est agencé autour du vilebrequin. Le moteur comporte : un stator qui comporte un noyau de stator agencé radialement vers l'extérieur de l'arbre creux ; et un rotor qui est raccordé au vilebrequin et agencé radialement vers l'extérieur du stator. Une partie de positionnement est intercalée entre la surface inférieure de la partie de base et la surface supérieure du noyau de stator.
PCT/JP2017/015079 2016-05-09 2017-04-13 Compresseur WO2017195523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-093857 2016-05-09
JP2016093857A JP2019112940A (ja) 2016-05-09 2016-05-09 圧縮機

Publications (1)

Publication Number Publication Date
WO2017195523A1 true WO2017195523A1 (fr) 2017-11-16

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PCT/JP2017/015079 WO2017195523A1 (fr) 2016-05-09 2017-04-13 Compresseur

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JP (1) JP2019112940A (fr)
WO (1) WO2017195523A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020085427A1 (fr) * 2018-10-26 2020-04-30 パナソニック アプライアンシズ リフリジレーション デヴァイシズ シンガポール Compresseur hermétique et dispositif de réfrigération

Citations (3)

* Cited by examiner, † Cited by third party
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