WO2019030841A1 - 圧縮機および冷凍サイクル装置 - Google Patents

圧縮機および冷凍サイクル装置 Download PDF

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Publication number
WO2019030841A1
WO2019030841A1 PCT/JP2017/028883 JP2017028883W WO2019030841A1 WO 2019030841 A1 WO2019030841 A1 WO 2019030841A1 JP 2017028883 W JP2017028883 W JP 2017028883W WO 2019030841 A1 WO2019030841 A1 WO 2019030841A1
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WO
WIPO (PCT)
Prior art keywords
container
terminal
terminals
compressor
center
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/JP2017/028883
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
聡経 新井
尚久 五前
佐々木　亮
敏充 飯田
久保　健一
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 KR1020207001824A priority Critical patent/KR102320908B1/ko
Priority to JP2019535491A priority patent/JP6746000B2/ja
Priority to CZ202011A priority patent/CZ309325B6/cs
Priority to CN201780093649.4A priority patent/CN111033052B/zh
Priority to PCT/JP2017/028883 priority patent/WO2019030841A1/ja
Publication of WO2019030841A1 publication Critical patent/WO2019030841A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B39/123—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
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/803—Electric connectors or cables; Fittings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a

Definitions

  • the present invention relates to a compressor and a refrigeration cycle apparatus.
  • a hermetic rotary compressor which is an example of a rotary compressor
  • internal components such as a motor and a compression mechanism are accommodated in a welded integrated hermetic container.
  • a discharge pipe for discharging the refrigerant and an airtight terminal connected to the internal stator via a lead wire are provided on the upper part of the sealed container.
  • a hermetic container of a rotary compressor is provided with one airtight terminal.
  • two airtight terminals it is possible to reduce the current flowing to the airtight terminals and the lead wire, and to switch the wire connection method of the motor winding.
  • Patent Document 1 describes a technique in which a first lead wire is drawn in a counterclockwise direction and connected to a first terminal, and a second lead wire is drawn in a clockwise direction and connected to a second terminal. ing.
  • An object of the present invention is to shorten a length of a plurality of connection lines for electrically connecting a plurality of terminals attached to a container of a compressor and an electric motor stored in the container of the compressor.
  • a compressor is A compression mechanism for compressing a refrigerant; An electric motor for driving the compression mechanism; A container for containing the compression mechanism and the motor; A first straight line including a first terminal and a second terminal and attached to one axial end of the container, the first straight line having a center passing through a center of the container and a center of the first terminal in plan view; A plurality of terminals located within an angle range of 180 ° or less formed by a second straight line passing through the center of the second terminal and the center of the second terminal; The plurality of terminals and the motor are electrically connected in the container, and a plurality of connection lines extracted from the plurality of terminals in the angle range in plan view are provided.
  • each connecting wire electrically connecting each terminal and the motor is, in plan view, a first straight line passing through the center of the container and the center of the first terminal, the center of the container and the center of the second terminal It is taken out within an angle range of 180 ° or less formed by the passing second straight line. Therefore, the length of each connection line can be shortened.
  • FIG. 1 is a circuit diagram of a refrigeration cycle apparatus according to Embodiment 1.
  • FIG. 1 is a circuit diagram of a refrigeration cycle apparatus according to Embodiment 1.
  • FIG. 1 is a longitudinal sectional view of a compressor according to Embodiment 1.
  • FIG. Fig. 2 is a cross-sectional view of a part of the compressor according to the first embodiment.
  • FIG. 2 is a plan view of a part of the compressor according to Embodiment 1.
  • FIG. 2 is a longitudinal sectional view of part of the compressor according to Embodiment 1;
  • FIG. 2 is a partial vertical cross-sectional view of a part of the compressor according to Embodiment 1.
  • FIG. 2 is a side view of part of the compressor according to Embodiment 1;
  • FIG. 1 is a circuit diagram of a refrigeration cycle apparatus according to Embodiment 1.
  • FIG. 1 is a circuit diagram of a refrigeration cycle apparatus according to Embodiment 1.
  • FIG. 1 is a longitudinal sectional
  • FIG. 2 is a bottom view of a part of the compressor according to Embodiment 1.
  • FIG. 2 is a diagram showing a connection method of connection lines at the time of assembly of a compressor according to Embodiment 1. The figure which shows the connection method of the connecting wire at the time of the assembly of the compressor concerning a comparative example.
  • FIG. 2 is a plan view of a part of the compressor according to Embodiment 1. The top view of a part of compressor concerning a comparative example. The graph which shows the comparison result of the deformation with respect to the internal pressure of the container upper part of the compressor which concerns on Embodiment 1 and a comparative example.
  • FIG. 7 is a plan view of a portion of a compressor according to a second embodiment.
  • FIG. 9 is a longitudinal sectional view of a compressor according to a third embodiment.
  • FIG. 10 is a longitudinal sectional view of a compressor according to a fourth embodiment.
  • Embodiment 1 The present embodiment will be described with reference to FIGS. 1 to 14.
  • FIG. 1 shows the refrigerant circuit 11 in the cooling operation.
  • FIG. 2 shows the refrigerant circuit 11 in the heating operation.
  • the refrigeration cycle apparatus 10 is an air conditioner in the present embodiment, but may be an apparatus other than an air conditioner such as a refrigerator or a heat pump cycle apparatus.
  • the refrigeration cycle apparatus 10 includes a refrigerant circuit 11 in which a refrigerant circulates.
  • the refrigeration cycle apparatus 10 includes a compressor 12, a four-way valve 13, a first heat exchanger 14 which is an outdoor heat exchanger, an expansion mechanism 15 which is an expansion valve, and a second heat exchanger which is an indoor heat exchanger. And 16.
  • the compressor 12, the four-way valve 13, the first heat exchanger 14, the expansion mechanism 15, and the second heat exchanger 16 are connected to the refrigerant circuit 11.
  • the compressor 12 compresses the refrigerant.
  • the four-way valve 13 switches the flow direction of the refrigerant between the cooling operation and the heating operation.
  • the first heat exchanger 14 operates as a condenser during the cooling operation, and dissipates the refrigerant compressed by the compressor 12. That is, the first heat exchanger 14 performs heat exchange using the refrigerant compressed by the compressor 12.
  • the first heat exchanger 14 operates as an evaporator at the time of heating operation, performs heat exchange between outdoor air and the refrigerant expanded by the expansion mechanism 15, and heats the refrigerant.
  • the expansion mechanism 15 expands the refrigerant that has dissipated heat in the condenser.
  • the second heat exchanger 16 operates as a condenser during heating operation, and dissipates the refrigerant compressed by the compressor 12. That is, the second heat exchanger 16 performs heat exchange using the refrigerant compressed by the compressor 12.
  • the second heat exchanger 16 operates as an evaporator during the cooling operation, performs heat exchange between room air and the refrigerant expanded by the expansion mechanism 15, and heats the refrigerant.
  • the refrigeration cycle apparatus 10 further includes a controller 17.
  • the control device 17 is, for example, a microcomputer. Although only the connection between the control device 17 and the compressor 12 is shown in FIGS. 1 and 2, the control device 17 includes not only the compressor 12 but also components other than the compressor 12 connected to the refrigerant circuit 11. It may be connected. The controller 17 monitors and controls the state of each component connected to the controller 17.
  • an HFC refrigerant such as R32, R125, R134a, R407C or R410A is used.
  • HFO-based refrigerants such as R1123, R1132 (E), R1132 (Z), R1132 a, R1141, R1234yf, R1234ze (E) or R1234ze (Z) are used.
  • natural refrigerants such as R290 (propane), R600a (isobutane), R744 (carbon dioxide) or R717 (ammonia) are used.
  • other refrigerants are used.
  • a mixture of two or more of these refrigerants is used.
  • HFC is an abbreviation of Hydrofluorocarbon.
  • HFO is an abbreviation of Hydrofluoroolefin.
  • FIG. 3 shows a longitudinal cross section of the compressor 12.
  • the compressor 12 is a hermetic compressor in the present embodiment.
  • the compressor 12 is specifically a multi-cylinder rotary compressor, but may be a single-cylinder rotary compressor, a scroll compressor or a reciprocating compressor.
  • the compressor 12 includes a container 20, a compression mechanism 30, an electric motor 40, and a crankshaft 50.
  • the container 20 is a closed container. At the bottom of the container 20, refrigeration oil 25 is stored. A suction pipe 21 for suctioning the refrigerant into the container 20 and a discharge pipe 22 for discharging the refrigerant to the outside of the container 20 are attached to the container 20.
  • the motor 40 is housed in the container 20. Specifically, the motor 40 is installed at the upper inside of the container 20.
  • the motor 40 is a concentrated winding motor in the present embodiment, but may be a distributed winding motor.
  • the compression mechanism 30 is housed in the container 20. Specifically, the compression mechanism 30 is installed at the lower inside of the container 20. That is, the compression mechanism 30 is disposed below the motor 40 in the container 20.
  • the crankshaft 50 connects the motor 40 and the compression mechanism 30.
  • the crankshaft 50 forms an oil supply passage of the refrigerator oil 25 and a rotation shaft of the electric motor 40.
  • the refrigeration oil 25 is pumped up by the oil supply mechanism such as an oil pump provided at the lower part of the crankshaft 50 as the crankshaft 50 rotates.
  • the refrigeration oil 25 is supplied to the sliding parts of the compression mechanism 30 to lubricate the sliding parts of the compression mechanism 30.
  • POE is an abbreviation of Polyolester.
  • PVE is an abbreviation for Polyvinyl Ether.
  • AB is an abbreviation of Alkylbenzene.
  • the motor 40 rotates the crankshaft 50.
  • the compression mechanism 30 is driven by the rotation of the crankshaft 50 to compress the refrigerant. That is, the compression mechanism 30 compresses the refrigerant by being driven by the rotational force of the electric motor 40 transmitted through the crankshaft 50. Specifically, this refrigerant is a low-pressure gas refrigerant sucked into the suction pipe 21. The high temperature and high pressure gas refrigerant compressed by the compression mechanism 30 is discharged from the compression mechanism 30 into the space in the container 20.
  • the crankshaft 50 has an eccentric shaft 51, a main shaft 52, and a countershaft 53. These are provided in the order of the main shaft portion 52, the eccentric shaft portion 51, and the sub shaft portion 53 in the axial direction D0. That is, the main shaft portion 52 is provided on one end side in the axial direction of the eccentric shaft portion 51, and the sub shaft portion 53 is provided on the other end side in the axial direction of the eccentric shaft portion 51.
  • the eccentric shaft portion 51, the main shaft portion 52, and the sub shaft portion 53 each have a cylindrical shape.
  • the main shaft portion 52 and the sub shaft portion 53 are provided such that the central axes thereof coincide with each other, that is, coaxially.
  • the eccentric shaft portion 51 is provided such that the central axis thereof is offset from the central axes of the main shaft portion 52 and the auxiliary shaft portion 53.
  • the eccentric shaft portion 51 eccentrically rotates.
  • the container 20 has a body portion 20a, a container upper portion 20b, and a container lower portion 20c.
  • the body 20a is cylindrical.
  • the container upper part 20b is closing the upper opening of the trunk
  • the container upper portion 20 b corresponds to one axial end of the container 20.
  • the lower part 20c of the container is closing the lower opening of the body 20a.
  • the container lower portion 20 c corresponds to the other axial end of the container 20.
  • the body 20a and the container upper portion 20b are connected by welding, and the body 20a and the container lower portion 20c are connected by welding, whereby the container 20 is sealed.
  • the body 20 a is provided with a suction pipe 21 connected to the suction muffler 23.
  • a discharge pipe 22 is provided in the container upper portion 20b.
  • the motor 40 is a brushless DC motor in the present embodiment, but may be a motor other than a brushless DC motor such as an induction motor.
  • DC is an abbreviation of Direct Current.
  • the motor 40 has a stator 41 and a rotor 42.
  • the stator 41 is cylindrical and fixed so as to be in contact with the inner circumferential surface of the container 20.
  • the rotor 42 has a cylindrical shape, and is installed inside the stator 41 with an air gap.
  • the width of the air gap is, for example, 0.3 mm or more and 1.0 mm or less.
  • the stator 41 has a stator core 43 and windings 44.
  • the stator core 43 is manufactured by punching a plurality of magnetic steel sheets containing iron as a main component into a predetermined shape, laminating them in the axial direction D0, and fixing them by caulking.
  • the thickness of each electromagnetic steel sheet is, for example, 0.1 mm or more and 1.5 mm or less.
  • the stator core 43 has an outer diameter larger than the inner diameter of the body 20 a of the container 20, and is fixed to the inside of the body 20 a of the container 20 by shrink fitting.
  • the windings 44 are wound around a stator core 43. Specifically, the winding 44 is wound in a concentrated manner around the stator core 43 via an insulating member.
  • the winding 44 comprises a core wire and at least one layer of coating covering the core wire.
  • the material of the core wire is copper.
  • the material of the film is AI / EI.
  • AI is an abbreviation of Amide-Imide.
  • EI is an abbreviation of Ester-Imide.
  • the material of the insulating member is PET.
  • PET is an abbreviation for Polyethylene Terephthalate.
  • the method of fixing the electromagnetic steel plates of the stator core 43 is not limited to caulking, and other methods such as welding may be used.
  • the method of fixing the stator core 43 to the inside of the body portion 20a of the container 20 is not limited to shrink fitting, and may be another method such as press fitting or welding.
  • the material of the core wire of the winding 44 may be aluminum.
  • the material of the insulating member may be PBT, FEP, PFA, PTFE, LCP, PPS or a phenol resin.
  • PBT is an abbreviation for Polybutylene Terephthalate.
  • FEP is an abbreviation for Fluorinated Ethylene Propylene.
  • PFA is an abbreviation of Perfluoroalkoxy Alkane.
  • PTFE is an abbreviation of Polytetrafluoroethylene.
  • LCP is an abbreviation for Liquid Crystal Polymer.
  • PPS is an abbreviation of Polyphenylene Sulfide.
  • the rotor 42 has a rotor core 45 and permanent magnets 46. Similar to the stator core 43, the rotor core 45 is manufactured by punching a plurality of magnetic steel sheets containing iron as a main component into a predetermined shape, laminating them in the axial direction D0, and fixing them by caulking. The thickness of each electromagnetic steel sheet is, for example, 0.1 mm or more and 1.5 mm or less.
  • the permanent magnets 46 are inserted into a plurality of insertion holes formed in the rotor core 45.
  • the permanent magnet 46 forms a magnetic pole.
  • As the permanent magnet 46 a ferrite magnet or a rare earth magnet is used.
  • the method of fixing the electromagnetic steel plates of the rotor core 45 is not limited to caulking, and other methods such as welding may be used.
  • an axial hole is formed in which the main shaft portion 52 of the crankshaft 50 is shrink-fit or press-fitted. That is, the inner diameter of the rotor core 45 is smaller than the outer diameter of the main shaft portion 52.
  • a plurality of through holes penetrating in the axial direction D0 are formed around the shaft hole of the rotor core 45.
  • Each through hole is one of the passages of the gas refrigerant discharged from the discharge muffler 35 described later to the space in the container 20.
  • Each through hole also serves as one of the passages for dropping the refrigerator oil 25 led to the upper part of the container 20 to the lower part of the container 20.
  • the motor 40 when configured as an induction motor, a plurality of slots formed in the rotor core 45 are filled or inserted with a conductor formed of aluminum or copper or the like. Then, a cage winding in which both ends of the conductor are shorted by the end ring is formed.
  • the container upper portion 20b is provided with a terminal 24 connected to an external power supply such as an inverter device, and a rod 28 to which a cover for protecting the terminal 24 is attached.
  • the terminal 24 is an airtight terminal such as a glass terminal.
  • the terminal 24 is fixed to the container 20 by welding.
  • the terminal 24 is connected to a connecting wire 26 extended from the winding 44 of the motor 40.
  • the terminal 24 and the motor 40 are electrically connected.
  • the discharge pipe 22 which the axial direction both ends opened is provided in the container upper part 20b.
  • the gas refrigerant discharged from the compression mechanism 30 sequentially passes through the rotor 42 and the oil separation plate 29 above the rotor 42, and from the space in the container 20 to the external refrigerant circuit 11 through the discharge pipe 22. It is discharged.
  • the oil separating plate 29 separates the refrigerating machine oil 25 in the container 20 pumped up with the refrigerant.
  • the oil separation plate 29 is fixed to the crankshaft 50 by press-fitting, and rotates as the crankshaft 50 rotates.
  • the oil separation plate 29 is fixed to the rotor 42 using a fixing tool such as a rivet, and rotates at high speed as the rotor 42 rotates.
  • the refrigeration oil 25 has a specific gravity larger than that of the refrigerant. Therefore, the oil separation plate 29 can separate the refrigerator oil 25 by flying it in the outer peripheral direction by centrifugal force.
  • the discharge pipe 22 may be installed at the outer peripheral portion of the container upper portion 20b, but in the present embodiment, it is installed at the center of the container upper portion 20b just above the crankshaft 50. Assuming that the discharge pipe 22 is installed on the outer peripheral portion of the container upper portion 20b, the refrigerator oil 25 separated by the oil separating plate 29 enters the discharge pipe 22 and is discharged to the outside of the container 20. The amount of refrigeration oil 25 may be reduced, and the lubricity of the compression mechanism 30 may be reduced. In order to prevent such a decrease in lubricity, it is desirable that the discharge pipe 22 be installed at the center of the upper portion 20b of the container.
  • FIG. 4 shows a cross section of a portion of the compressor 12 as viewed along the axial direction D0.
  • hatching representing a cross section is omitted.
  • the compression mechanism 30 has a cylinder 31, a rolling piston 32, a main bearing 33, an auxiliary bearing 34, and a discharge muffler 35.
  • the inner periphery of the cylinder 31 is circular in plan view. Inside the cylinder 31, a cylinder chamber 61 which is a circular space in plan view is formed. A suction port for suctioning the gas refrigerant from the refrigerant circuit 11 is provided on the outer peripheral surface of the cylinder 31. The refrigerant drawn from the suction port is compressed in the cylinder chamber 61. Both ends in the axial direction of the cylinder 31 are open.
  • the rolling piston 32 is ring-shaped. Therefore, the inner circumference and the outer circumference of the rolling piston 32 are circular in plan view.
  • the rolling piston 32 rotates eccentrically in the cylinder chamber 61.
  • the rolling piston 32 is slidably fitted on an eccentric shaft portion 51 of a crankshaft 50 which is a rotation shaft of the rolling piston 32.
  • the cylinder 31 is provided with vane grooves 62 connected to the cylinder chamber 61 and extending in the radial direction.
  • a back pressure chamber 63 which is a circular space in plan view connected to the vane groove 62 is formed.
  • a vane 64 for separating the cylinder chamber 61 into a suction chamber, which is a low pressure operating chamber, and a compression chamber, which is a high pressure operating chamber is installed in the vane groove 62.
  • the vanes 64 are in the form of a plate whose tip is rounded.
  • the vanes 64 reciprocate while sliding in the vane grooves 62.
  • the vanes 64 are always pressed against the rolling piston 32 by vane springs provided in the back pressure chamber 63.
  • the vane spring is mainly used for the purpose of pressing the vane 64 against the rolling piston 32 when the compressor 12 starts with no difference in pressure in the container 20 and in the cylinder chamber 61.
  • the main bearing 33 is a reverse T-shaped bearing in a side view.
  • the main bearing 33 is slidably fitted on a main shaft portion 52 which is a portion above the eccentric shaft portion 51 of the crankshaft 50.
  • a through hole 54 serving as an oil supply passage is provided along the axial direction D0 inside the crankshaft 50, and is sucked through the through hole 54 between the main bearing 33 and the main shaft portion 52.
  • An oil film is formed by the supply of the refrigerating machine oil 25.
  • the main bearing 33 closes the upper side of the cylinder chamber 61 and the vane groove 62 of the cylinder 31. That is, the main bearing 33 closes the upper side of the two working chambers in the cylinder 31.
  • the auxiliary bearing 34 is a T-shaped bearing in a side view.
  • the sub bearing 34 is slidably fitted in a sub shaft portion 53 which is a portion below the eccentric shaft portion 51 of the crankshaft 50.
  • An oil film is formed between the sub bearing 34 and the sub shaft portion 53 by supplying the refrigerating machine oil 25 sucked up through the through hole 54 of the crankshaft 50.
  • the sub bearing 34 closes the lower side of the cylinder chamber 61 and the vane groove 62 of the cylinder 31. That is, the sub bearing 34 closes the lower side of the two working chambers in the cylinder 31.
  • the main bearing 33 and the sub bearing 34 are fixed to the cylinder 31 by fasteners 36 such as bolts, respectively, and support a crankshaft 50 which is a rotation shaft of the rolling piston 32.
  • the main bearing 33 supports the main shaft 52 without contacting the main shaft 52 by fluid lubrication of the oil film between the main bearing 33 and the main shaft 52.
  • the secondary bearing 34 supports the secondary shaft 53 without contacting the secondary shaft 53 by fluid lubrication of the oil film between the secondary bearing 34 and the secondary shaft 53 as the main bearing 33 does.
  • the main bearing 33 is provided with a discharge port for discharging the refrigerant compressed in the cylinder chamber 61 to the refrigerant circuit 11.
  • the discharge port is at a position where it is connected to the compression chamber when the cylinder chamber 61 is divided by the vane 64 into a suction chamber and a compression chamber.
  • the main bearing 33 is attached with a discharge valve that closes the discharge port so as to open and close. The discharge valve is closed until the gas refrigerant in the compression chamber reaches a desired pressure, and is opened when the gas refrigerant in the compression chamber reaches a desired pressure. Thereby, the discharge timing of the gas refrigerant from the cylinder 31 is controlled.
  • the discharge muffler 35 is attached to the outside of the main bearing 33.
  • the high-temperature, high-pressure gas refrigerant discharged when the discharge valve is opened enters the discharge muffler 35 and is then discharged from the discharge muffler 35 into the space in the container 20.
  • the discharge port and the discharge valve may be provided in the sub bearing 34 or both the main bearing 33 and the sub bearing 34.
  • the discharge muffler 35 is attached to the outside of the bearing on which the discharge port and the discharge valve are provided.
  • An intake muffler 23 is provided beside the container 20.
  • the suction muffler 23 sucks the low-pressure gas refrigerant from the refrigerant circuit 11.
  • the suction muffler 23 prevents the liquid refrigerant from directly entering the cylinder chamber 61 of the cylinder 31 when the liquid refrigerant returns.
  • the suction muffler 23 is connected to a suction port provided on the outer peripheral surface of the cylinder 31 via a suction pipe 21.
  • the suction port is in a position to be connected to the suction chamber when the cylinder chamber 61 is divided by the vane 64 into the suction chamber and the compression chamber.
  • the main body of the suction muffler 23 is fixed to the side surface of the body 20 a of the container 20 by welding or the like.
  • the material of the eccentric shaft portion 51, the main shaft portion 52 and the countershaft portion 53 of the crankshaft 50 is a cast material or a forged material.
  • the material of the main bearing 33 and the auxiliary bearing 34 is a cast material or a sintered material, and specifically, sintered steel, gray cast iron or carbon steel.
  • the material of the cylinder 31 is also sintered steel, gray cast iron or carbon steel.
  • the material of the rolling piston 32 is a cast material, and specifically, an alloy steel containing molybdenum, nickel and chromium, or an iron-based cast material.
  • the material of the vanes 64 is high speed tool steel.
  • the vanes 64 are provided integrally with the rolling piston 32.
  • the vanes 64 reciprocate along the grooves of a support rotatably mounted on the rolling piston 32.
  • the vanes 64 radially advance and retract while oscillating as the rolling piston 32 rotates, thereby dividing the inside of the cylinder chamber 61 into a compression chamber and a suction chamber.
  • the support is constituted by two columnar members having a semicircular cross section. The support is rotatably fitted in a circular holding hole formed at an intermediate portion between the suction port and the discharge port of the cylinder 31.
  • Electric power is supplied from the terminal 24 to the stator 41 of the motor 40 via the connection line 26.
  • current flows through the windings 44 of the stator 41, and magnetic flux is generated from the windings 44.
  • the rotor 42 of the motor 40 is rotated by the action of the magnetic flux generated from the winding 44 and the magnetic flux generated from the permanent magnet 46 of the rotor 42.
  • the rotor 42 is rotated by the attraction and repulsion between the rotating magnetic field generated by the flow of current through the winding 44 of the stator 41 and the magnetic field of the permanent magnet 46 of the rotor 42.
  • the rotation of the rotor 42 causes the crankshaft 50 fixed to the rotor 42 to rotate.
  • the rolling piston 32 of the compression mechanism 30 eccentrically rotates in the cylinder chamber 61 of the cylinder 31 of the compression mechanism 30.
  • a cylinder chamber 61 which is a space between the cylinder 31 and the rolling piston 32 is divided by a vane 64 into a suction chamber and a compression chamber.
  • the volume of the suction chamber and the volume of the compression chamber change.
  • the low-pressure gas refrigerant is sucked from the suction muffler 23 through the suction pipe 21 by gradually expanding the volume.
  • the volume of the gas refrigerant is gradually reduced by gradually reducing the volume.
  • the compressed, high-pressure and high-temperature gas refrigerant is discharged from the discharge muffler 35 into the space in the container 20.
  • the discharged gas refrigerant further passes through the electric motor 40 and is discharged from the discharge pipe 22 in the container upper portion 20 b to the outside of the container 20.
  • the refrigerant discharged out of the container 20 returns to the suction muffler 23 again through the refrigerant circuit 11.
  • FIG. 5 shows a top view of a portion of the compressor 12 as viewed along the axial direction D0.
  • FIG. 6 shows a cross section of a portion of the compressor 12 as viewed along a first direction D1 orthogonal to the axial direction D0.
  • FIG. 7 shows a front view and a cross section of a portion of the compressor 12 as viewed along a second direction D2 orthogonal to the axial direction D0 and the first direction D1.
  • FIG. 8 shows a side view of a portion of the compressor 12 as viewed along the first direction D1. In FIG. 8, the terminal 24 is omitted.
  • drum 20a is circular shape in planar view.
  • a discharge pipe 22 is provided at the center of the container upper portion 20b.
  • a first flat surface portion 81, a second flat surface portion 82, and a curved surface portion 83 are formed on the surface of the container upper portion 20b.
  • the first flat portion 81 is provided with a plurality of terminals 24. Each terminal 24 is electrically connected to the motor 40 in the container 20. Each terminal 24 is fitted in a through hole provided in the first flat portion 81. The outermost shell of each terminal 24 is in contact with the inner peripheral edge of the through hole.
  • the second flat portion 82 is provided with a rod 28 perpendicular to the second flat portion 82.
  • the outer diameter of the discharge pipe 22 provided at the central portion of the container upper portion 20b is desirably 0.1 times or more the outer diameter of the container upper portion 20b.
  • the outer diameter of the discharge pipe 22 is preferably 0.2 or less times the outer diameter of the container upper portion 20b.
  • the surface of the curved surface portion 83 is composed of a plurality of curved surfaces.
  • the curved surface portion 83 has a shape similar to a partially missing hemisphere.
  • the edges of the first flat surface portion 81 and the second flat surface portion 82 are connected to the curved surface portion 83 by the concave portion 84 which is smoothly curved. That is, portions between the first flat surface portion 81 and the second flat surface portion 82 and the curved surface portion 83 are recessed.
  • the recess 84 is formed thick and has a function as a rib for improving the strength.
  • the first flat surface portion 81 is inclined at a first inclination angle ⁇ 1 in a direction away from the virtual vertical plane with respect to a virtual vertical surface formed in the upper end or upper opening of the cylindrical body portion 20a and orthogonal to the axial direction D0. ing.
  • the first inclination angle ⁇ 1 is desirably 5 ° or more and 30 ° or less, and is 5 ° in the present embodiment.
  • One end 81 a of the first flat surface 81 protrudes outward beyond the curved surface 83.
  • the distance from one end 81 a of the first flat surface 81 to the imaginary vertical plane is longer than the distance from the other end 81 b of the first flat surface 81 to the imaginary vertical plane.
  • the first plane portion 81 is inclined with respect to the virtual vertical plane.
  • the first flat surface portion 81 is smoothly connected to the curved surface portion 83 by the concave portion 84. Therefore, even when the distance between the terminal 24 and the discharge pipe 22 is maintained in plan view, the distance along the shape of the container upper portion 20b between the outermost shell of the terminal 24 and the outer peripheral wall of the discharge pipe 22 And, the distance along the shape of the container upper portion 20b between the outermost shell of the terminal 24 and the inner peripheral wall of the container upper portion 20b is extended.
  • one end 81a of the first flat surface 81 is further separated from the curved surface 83, and one end 81a of the first flat surface 81 is It protrudes beyond the curved surface portion 83, and the distance to the virtual vertical surface is increased. Therefore, the distance along the surface of the container upper portion 20b from the terminal 24 to the discharge pipe 22 is further extended.
  • the container upper portion 20b has a diameter of 100 mm, the distance between the outermost shell of the terminal 24 and the outer peripheral wall of the discharge pipe 22 is less than 3 mm, and the outermost shell of the terminal 24 between the inner peripheral wall of the container upper 20b Distance of less than 5 mm.
  • the first flat portion 81 is not inclined, the distance between the outermost shell of the terminal 24 and the outer peripheral wall of the discharge pipe 22, and the outermost shell of the terminal 24 and the inner peripheral wall of the container upper portion 20b The distance between the two can not be secured enough. That is, it is not possible to design according to the specification of the insulation distance.
  • the distance between the outermost shell of the terminal 24 and the outer peripheral wall of the discharge pipe 22 is 3 mm or more, and the outermost shell of the terminal 24 and the container upper portion 20b 5 mm or more can be secured between the inner circumferential wall of That is, the design according to the specification of the insulation distance is possible.
  • the first inclination angle ⁇ 1 of the first flat portion 81 is within the range of 5 ° to 30 ° with respect to the virtual vertical plane, the distance between the outermost shell of the terminal 24 and the outer peripheral wall of the discharge pipe 22; And, the distance between the outermost shell of the terminal 24 and the inner peripheral wall of the container upper portion 20b is secured.
  • the discharge pipe 22 is provided at a position overlapping the central axis of the container 20 at one end in the axial direction of the container 20.
  • the container 20 has a curved surface portion 83 in which the discharge pipe 22 is disposed, and a first flat portion 81 in which the plurality of terminals 24 are disposed at one axial end of the container 20.
  • the first flat portion 81 is virtually perpendicular to the central axis of the container 20 along at least one direction with respect to a virtual vertical plane perpendicular to the axial direction D0, which is located between the plurality of terminals 24 and the motor 40. Inclined at an inclination angle away from the surface.
  • the first flat portion 81 is inclined at an inclination angle away from the virtual vertical plane as approaching the central axis of the container 20 along the two directions with respect to the virtual vertical plane.
  • the first flat portion 81 including one end of the first direction D1 orthogonal to the axial direction D0 is the central axis of the container 20 along the first direction D1 with respect to the virtual vertical plane. As it approaches, it inclines at the 1st inclination angle (theta) 1 which leaves
  • the entire first flat surface portion 81 is inclined at the first inclination angle ⁇ 1 with respect to the virtual vertical plane along the first direction D1.
  • a part of the first flat portion 81 including one end in the first direction D1 is farther from the virtual vertical plane as it approaches the central axis of the container 20 along the first direction D1.
  • the remaining portion of the first flat portion 81 including the other end in the first direction D1 is farther from the virtual vertical plane as it goes away from the central axis of the container 20 along the first direction D1.
  • the first inclination angle ⁇ 1 is desirably 5 ° or more and 30 ° or less, and is 5 ° in the present embodiment.
  • the first flat portion 81 including one end of the second direction D2 orthogonal to the axial direction D0 and the first direction D1 is the center of the container 20 along the second direction D2 with respect to the virtual vertical plane. As it approaches the axis, it inclines at a second inclination angle ⁇ 2 that is away from the virtual vertical plane. In the present embodiment, the entire first flat surface portion 81 is inclined at a second inclination angle ⁇ 2 with respect to the virtual vertical plane along the second direction D2. Thus, a part of the first flat portion 81 including one end in the second direction D2 is farther from the virtual vertical plane as it approaches the central axis of the container 20 along the second direction D2.
  • the remaining portion of the first flat portion 81 including the other end in the second direction D2 is farther from the virtual vertical plane as it goes away from the central axis of the container 20 along the second direction D2.
  • the second tilt angle ⁇ 2 is different from the first tilt angle ⁇ 1. Is desirable. That is, if the distance from one end to the other end of first flat portion 81 in the second direction D2 is larger than the distance from one end to the other end in first direction D1 of first flat portion 81, the second inclination angle ⁇ 2 Is desirably smaller than the first inclination angle ⁇ 1.
  • the second inclination angle ⁇ 2 is It is desirable to be larger than the first inclination angle ⁇ 1. This is because the steeper the slope, the shorter the distance can be obtained. If the height can be obtained, it will be easier to secure the distance and the area.
  • the second inclination angle ⁇ 2 is desirably 5 ° or more and 30 ° or less, and is 10 ° in the present embodiment.
  • At least one of the first inclination angle ⁇ 1 and the second inclination angle ⁇ 2 of the first flat surface portion 81 may be different in each region where the terminal 24 is provided. That is, the inclination angle of the first flat portion 81 may be different for each of the terminals 24.
  • the container 20 When the refrigerant compressed in the compression mechanism 30 is discharged into the space in the container 20, the container 20 receives an outward force by the high temperature and high pressure gas refrigerant.
  • the cylindrical portion of the body portion 20a can reduce stress concentration due to the outward force.
  • the hemispherical or dome-shaped lower container portion 20c can reduce stress concentration due to an outward force.
  • the first flat portion 81 In the container upper portion 20b, the first flat portion 81 is inclined, and one end 81a of the first flat portion 81 protrudes outward beyond the curved surface portion 83 and extends to a position higher than the center of the container upper portion 20b There is.
  • first flat surface portion 81 and the curved surface portion 83 are connected by the concave portion 84 which is smoothly curved. Therefore, when the distance between the plurality of terminals 24 provided in the first flat portion 81 and the discharge pipe 22 provided in the center of the container upper portion 20b is that the surface of the container upper portion 20b is flat, and the container upper portion 20b This is more than if the surface of the is hemispherical.
  • the recess 84 is formed thick and has a function as a rib. Therefore, even if the pressure in the container 20 rises, the stress is not easily concentrated, and the deformation of the container upper portion 20b is suppressed.
  • the first flat surface portion 81 is flat, and the curved surface portion 83 approximates to a hemispherical shape partially missing, and the concave portion 84 connecting the first flat surface portion 81 and the curved surface portion 83. Is formed thick and smoothly curved, stress concentration due to outward force can be reduced.
  • one axial end of the container 20 is circular in plan view.
  • the outer diameter of the discharge pipe 22 is at least 0.1 times the outer diameter of one axial end of the container 20.
  • the first flat surface portion 81 is inclined, and the distance between the terminal 24 provided on the first flat surface portion 81 and the discharge pipe 22 provided on the curved surface portion 83 is extended. Therefore, even when the discharge pipe 22 having a large diameter of 0.1 times or more of the outer diameter of the container upper portion 20b is used, the terminal 24 and the discharge pipe 22 can be disposed sufficiently apart from each other.
  • the rod 28 to which the cover for covering the terminal 24 is attached may be disposed in the first flat portion 81, it is disposed in the second flat portion 82 in the present embodiment.
  • the rod 28 is extended to a position higher than the curved portion 83 of the container upper portion 20b. Therefore, the arrangement and mounting operation of the terminal 24 and the rod 28 are easy. The attachment of the cover to the rod 28 is also facilitated.
  • Accessories such as a temperature sensor may be attached to the second flat portion 82.
  • the second flat portion 82 is lower than the top of the first flat portion 81 by the distance H1. Therefore, when the temperature sensor is attached to the second flat portion 82, the temperature sensor can be disposed at a position near the compression mechanism 30. As the temperature sensor is closer to the compression mechanism 30, the temperature change of the refrigerant discharged from the compression mechanism 30 can be detected earlier, even when the circulation flow rate of the refrigerant is small.
  • the container 20 has the second flat portion 82 in which the rod 28 is disposed at one axial end of the container 20.
  • a cover for covering the plurality of terminals 24 is attached to the rod 28.
  • the second flat portion 82 may be inclined with respect to the virtual vertical plane, but in the present embodiment, is parallel to the virtual vertical plane.
  • the rod 28 is provided perpendicularly to the second flat portion 82. That is, the rod 28 is provided to extend along the axial direction D0.
  • accessories different from the plurality of terminals 24 and the rod 28 may be disposed.
  • an accessory such as a temperature sensor is disposed in the second flat portion 82, it is desirable that the maximum distance from the virtual vertical plane of the second flat portion 82 be closer than the first flat portion 81.
  • resistance welding is used as a method of attaching the discharge pipe 22 to the container upper portion 20b.
  • the discharge pipe 22 is joined to the curved surface portion 83 via the ring member 85.
  • the material of the ring member 85 is iron.
  • the method of attaching the discharge pipe 22 to the container upper portion 20b is not limited to resistance welding, and may be other methods such as gas welding using a brazing material or laser welding.
  • gas welding has a large heat input and a wide heat input range. Therefore, when the plurality of terminals 24 are attached by resistance welding after the discharge pipe 22 is attached by gas welding, distortion may occur on the surface of the portion of the container upper portion 20b to which the terminals 24 are attached. If distortion occurs, the surface of the container upper portion 20b and the surface of the terminal 24 do not come in contact with each other, which may cause welding defects during resistance welding. Therefore, also in the welding of the discharge pipe 22, it is desirable to reduce the heat input and the heat input range by using resistance welding or laser welding.
  • FIG. 9 shows the underside of a portion of the compressor 12 as viewed from inside the vessel 20 along the axial direction D0.
  • the plurality of terminals 24 includes a first terminal 24 a and a second terminal 24 b.
  • the plurality of terminals 24 may include terminals 24 different from the first terminals 24 a and the second terminals 24 b.
  • the plurality of terminals 24 have a first straight line L1 whose center passes through the center P0 of the container 20 and the center P1 of the first terminal 24a, and the center P0 of the container 20 and the center P2 of the second terminal 24b in plan view. It is attached to one axial direction end of the container 20 so as to be located within an angle range R1 of 180 ° or less formed by the second straight line L2 passing through.
  • the plurality of terminals 24 are collectively arranged on the first flat portion 81 of the container upper portion 20b.
  • the plurality of connection lines 26 electrically connect the plurality of terminals 24 and the motor 40 in the container 20.
  • the plurality of connection lines 26 include a first connection line 26 a electrically connecting the first terminal 24 a and the motor 40, and a second connection line 26 b electrically connecting the second terminal 24 b and the motor 40.
  • first connection line 26 a electrically connecting the first terminal 24 a and the motor 40
  • second connection line 26 b electrically connecting the second terminal 24 b and the motor 40.
  • another plurality of connecting wires 26 may be used to electrically connect the other terminal 24 to the motor 40.
  • Connecting lines 26 may be included.
  • the plurality of connection lines 26 are extracted from the plurality of terminals 24 into the angular range R1 in plan view. Specifically, the portion of each connecting wire 26 following the end connected to each terminal 24 is taken out of the existing range R2 of each terminal 24 at a position within the angular range R1 in plan view.
  • the existence range R2 of each terminal 24 is a region surrounded by an outline formed by the outermost shell of each terminal 24 in a plan view. Although the presence range R2 of each terminal 24 may be an area of any shape, it is a circular area in the present embodiment.
  • the connecting wire 26 extends from the end of the connecting wire 26 connected to the certain terminal 24 and the connecting wire 26 extends from the end of the connection range 26 of the terminal 24 in plan view. It is the position being taken out.
  • the plurality of connection lines 26 are routed such that this position falls within the angular range R1 for all the connection lines 26. Therefore, the lengths of the plurality of connection lines 26 can be shortened. Also, the wiring space can be reduced. In order to reduce the wiring space as much as possible, it is desirable that the plurality of connection lines 26 be disposed within the angular range R1 in plan view. That is, it is desirable that the plurality of connection lines 26 be routed so that the whole of all the connection lines 26 falls within the angle range R1.
  • each connecting wire 26 is taken out toward the center of the angle range R1. That is, the first connection line 26a and the second connection line 26b are on the third straight line L3 passing through the center P0 of the container 20 and the midpoint P3 of the center P1 of the first terminal 24a and the center P2 of the second terminal 24b. It is taken out in the approaching direction. Therefore, the wiring space can be made smaller.
  • the angular range R1 formed by a straight line passing the center of the container upper portion 20b and the centers of the plurality of terminals 24 is 180 ° or less.
  • the range of the extraction direction of each connection line 26 connected to each terminal 24 corresponds to the angle range R1.
  • the connection line 26 extended from the stator 41 is connected to the terminal 24 via the cluster 72 inside the container upper portion 20b.
  • the point P4 of the body 20a in the angle range R1 and the point P5 of the container upper portion 20b are aligned, and the point P6 of the body 20a and the point P7 of the container upper portion 20b on the opposite side are aligned.
  • the container upper portion 20b is fixed to the body 20a by welding so as to cover the opening of the body 20a.
  • each connecting line 26 is extended from the stator 41 The point is also on the point P4 side, that is, within the angle range R1. Therefore, each connection line 26 can be connected to each terminal 24 at the shortest.
  • the compressor 12 can be assembled without causing the connecting wire 26 to extend in the container 20 without extending the connecting wire 26 more than necessary.
  • the connecting line 26 is fixed when the take-out direction of the connecting line 26 connected to a certain terminal 24 is out of the angle range R1 and the body 20a and the container upper portion 20b are aligned.
  • the connecting wire 26 or the other connecting wire 26 is extended more than necessary, and a slack occurs in the container 20.
  • the second connection line 26b connected to the second terminal 24b is more than necessary because the extraction direction of the first connection line 26a connected to the first terminal 24a is outside the angle range R1.
  • connection line 26 passes near the discharge pipe 22, the refrigeration oil 25 pumped up in the upper space of the container 20 is trapped in the connection line 26, enters the discharge pipe 22, and is discharged to the outside of the container 20 It becomes easy to be done.
  • the refrigeration oil 25 is trapped in the band, and the refrigeration oil 25 is easily discharged out of the container 20.
  • the first terminal 24 a and the second terminal 24 b each have three pins 71. It is desirable that the three pins 71 of the first terminal 24a and the second terminal 24b be disposed symmetrically with respect to the third straight line L3.
  • At least one connection line 26 included in the plurality of connection lines 26 is connected to one terminal 24 included in the plurality of terminals 24 via the cluster 72.
  • the first connection line 26 a and the second connection line 26 b are connected to each of the first terminal 24 a and the second terminal 24 b via the cluster 72.
  • a cluster 72 configured by covering a metal connection terminal with a resin cover is used for connection between the connection wire 26 and the terminal 24 inside the container upper portion 20b. Since connection to the three pins 71 can be performed at one time, workability is improved. In order to prevent erroneous connection between the terminals 24, the cluster 72 may be used for some of the terminals 24 and only metal connection terminals may be used for the remaining terminals 24.
  • the three pins 71 of the two terminals 24 are arranged symmetrically with respect to a straight line passing through the center of the discharge pipe 22 and the middle point of the terminal 24.
  • the connection lines 26 connected to the three pins 71 of the terminal 24 are taken out in the direction approaching this straight line. Therefore, the connection line 26 can be taken out collectively in the vicinity of the point P4 of the trunk portion 20a and the point P5 of the container upper portion 20b. Therefore, the lengths of the connection lines 26 can be set to be uniform and minimum.
  • Some connection wires 26 do not sag in the container 20, and the wire connection workability is improved. Parts sharing of the connection line 26 can also be achieved, reducing the cost of parts and increasing the part management efficiency.
  • FIG. 12 shows the top of a portion of the compressor 12 as viewed in the axial direction D0, as in FIG.
  • the plurality of power supply lines 27 are connected to the plurality of terminals 24 outside the container 20.
  • the plurality of power supply lines 27 electrically connect the plurality of terminals 24 to the external power supply.
  • the plurality of power supply lines 27 include a first power supply line 27a connected to the first terminal 24a and a second power supply line 27b connected to the second terminal 24b.
  • a first power supply line 27a connected to the first terminal 24a
  • a second power supply line 27b connected to the second terminal 24b.
  • another power supply line 27 connected to the other terminal 24 is connected to the plurality of power supply lines 27. It may be included.
  • each power supply line 27 following the end connected to each terminal 24 is taken out of the existing range R2 of each terminal 24 in plan view.
  • the power supply line 27 extends from the end of a certain power supply line 27 connected to a certain terminal 24, and the power supply line 27 extends from the end of the existence range R2 of the terminal 24 in plan view. It is the position being taken out.
  • each power supply line 27 is taken out from each terminal 24 may be any direction, but in the present embodiment, the first power supply line 27a is taken out in the direction away from the third straight line L3 in plan view.
  • the line 27b is taken out in a direction approaching the third straight line L3. That is, the first power supply line 27a is taken out in the direction away from the third straight line L3 in plan view.
  • the second power supply line 27b is extracted in a direction away from the third straight line L3 in plan view.
  • the first power supply line 27a may be extracted in a direction approaching the third straight line L3 and the second power supply line 27b may be extracted in a direction away from the third straight line L3 in plan view.
  • the first power supply line 27a and the second power supply line 27b may be taken out in a direction away from the third straight line L3.
  • the power supply line 27 for supplying power is connected to the terminal 24 outside the container upper portion 20b.
  • a plurality of power supply lines 27 are integrated as in the comparative example shown in FIG. It is desirable that the power supply lines 27 be separated and clearly distinguished even after the cover is attached. As shown in FIG. 12, erroneous connection can be prevented by extracting one of the power supply lines 27 in a direction away from the straight line passing through the center of the discharge pipe 22 and the middle points of the plurality of terminals 24.
  • the angle range R1 is a second straight line passing through the center P0 of the container 20 and the center P1 of the first terminal 24a and the center P0 of the container 20 and the center P2 of the second terminal 24b in plan view. It is the range of 180 degrees or less which L2 makes.
  • the connection wires 26 electrically connecting the terminals 24 and the motor 40 are taken out of the existing range R2 of the terminals 24 at a position within the angle range R1 in plan view. Therefore, the length of each connection line 26 can be shortened.
  • the present embodiment even if there are more places where the terminal 24 provided in the container upper portion 20b and the discharge pipe 22 are close, when the inside of the container 20 becomes high in pressure, the space between the terminal 24 and the discharge pipe The stress is less likely to be concentrated in the region of (b), so deformation of the container 20 is less likely to occur. Leakage of refrigerant gas and breakage of the terminal 24 due to deformation of the container 20 can be prevented.
  • the risk of disconnection due to contact with a structure rotating at high speed with the rotor 42 in the container 20 is reduced.
  • the efficiency of the work of connecting the connecting wire 26 to the terminal 24 is increased.
  • the first flat portion 81 where the terminal 24 is disposed is inclined with respect to a virtual vertical plane orthogonal to the axial direction D0.
  • the distance between the discharge pipe 22 and the terminal 24 and the distance between the terminal 24 and the peripheral wall of the container 20 are extended. Therefore, even if the plurality of terminals 24 are provided while maintaining the outer diameter of the container 20, concentration of stress between the discharge pipe 22 and the terminals 24 is suppressed, and the container 20 is less likely to be deformed. That is, the strength of the container 20 can be secured.
  • angle range R1 which connected the center of the container 20 and the center of the some terminal 24 in planar view is 180 degrees or less.
  • the extraction direction of the connection line 26 is within the angle range R1.
  • FIG. 14 shows a comparison result of the amount of deformation relative to the internal pressure of the container upper portion 20b of the present embodiment and the container upper portion of the comparative example.
  • the load pressure was set to 5 MPa, the numerical analysis conditions were set, and the amount of deformation under load was calculated.
  • the black bar graph is the variation of the present embodiment, and the white bar graph is the comparison of the comparative example.
  • the amount of deformation of the upper portion of the container of the comparative example was 100%.
  • the amount of deformation between the discharge pipe 22 and the terminal 24 of the container upper portion 20b is reduced to about 50% of that of the comparative example.
  • the amount of deformation of the central portion of the terminal 24 is reduced to about 80% of that of the comparative example. It is considered that this is because the distance between the discharge pipe 22 and the terminal 24 is sufficiently maintained.
  • one of the factors is that the first flat portion 81 in which the terminal 24 is disposed and the curved surface portion 83 in which the discharge pipe 22 is disposed are connected by the smooth concave portion 84.
  • stress applied to the terminal 24 can be reduced, and refrigerant leakage due to a micro crack or the like of the glass portion of the terminal 24 can be suppressed. Even if a flammable refrigerant having a low global warming potential, including R290, is sealed in the container 20, the flammable refrigerant does not leak from the container 20, and safety is maintained.
  • the container 20 is sufficiently strong, so safety can be maintained.
  • the wedge-shaped hermetic container is press-fit into the release portion of the cylindrical hermetic container, and a discharge pipe is provided at the center It can be applied to cases.
  • FIG. 15 shows a top view of a portion of the compressor 12 as viewed along the axial direction D0.
  • the plurality of terminals 24 are collectively disposed in one first flat portion 81, but in the present embodiment, the plurality of terminals 24 are disposed in two or more first flat portions 81. It is divided and arranged.
  • each first flat portion 81 has an oval shape such as an oval or a rounded rectangle.
  • the edge of each first flat section 81 is connected to the curved section 83 by a smoothly curved recess 84. That is, the portion between the first flat surface portion 81 and the curved surface portion 83 is recessed.
  • the recess 84 is formed thick and has a function as a rib for improving the strength.
  • each first flat surface portion 81 is inclined at an inclination angle away from the virtual vertical plane as approaching the central axis of the container 20 along the two directions with respect to the virtual vertical plane.
  • the entire first flat surface portion 81 is inclined at a first inclination angle ⁇ 1 with respect to the virtual vertical plane.
  • a part including the end of the 1st direction D1 of each 1st plane part 81 is separated from an imaginary perpendicular plane as the central axis of container 20 is approached along with the 1st direction D1.
  • the remaining portion including the other end of the first flat portion 81 in the first direction D1 is farther from the virtual vertical plane as it goes away from the central axis of the container 20 along the first direction D1.
  • the first inclination angle ⁇ 1 is desirably 5 ° or more and 30 ° or less, and is 5 ° in the present embodiment.
  • each first flat surface portion 81 including one end in the second direction D2 is farther from the virtual vertical plane as it approaches the central axis of the container 20 along the second direction D2.
  • the remaining portion of each first flat portion 81 including the other end in the second direction D2 is farther from the virtual vertical plane as it goes away from the central axis of the container 20 along the second direction D2.
  • the second inclination angle ⁇ 2 is desirably 5 ° or more and 30 ° or less, and is 10 ° in the present embodiment.
  • At least one of the first inclination angle ⁇ 1 and the second inclination angle ⁇ 2 of the first flat surface portion 81 may be different for each first flat surface portion 81. That is, the inclination angle of the first flat portion 81 may be different for each of the terminals 24.
  • the rods 28 are disposed on the lower side of the respective first flat portions 81.
  • the rod 28 is provided to extend along the axial direction D0.
  • the connecting wire 26 is integrated with the winding 44 of the motor 40. However, as shown in FIG. 16, the connecting wire 26 is connected to the winding 44 of the motor 40 via the connection terminal 47. It may be
  • the body 20a and the container lower portion 20c of the container 20 are connected by welding, but as shown in FIG. 17, the body 20a and the container lower portion 20c of the container 20 are integrally formed. It is also good.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
PCT/JP2017/028883 2017-08-09 2017-08-09 圧縮機および冷凍サイクル装置 Ceased WO2019030841A1 (ja)

Priority Applications (5)

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KR1020207001824A KR102320908B1 (ko) 2017-08-09 2017-08-09 압축기 및 냉동 사이클 장치
JP2019535491A JP6746000B2 (ja) 2017-08-09 2017-08-09 圧縮機および冷凍サイクル装置
CZ202011A CZ309325B6 (cs) 2017-08-09 2017-08-09 Kompresor a zařízení chladicího cyklu
CN201780093649.4A CN111033052B (zh) 2017-08-09 2017-08-09 压缩机以及制冷循环装置
PCT/JP2017/028883 WO2019030841A1 (ja) 2017-08-09 2017-08-09 圧縮機および冷凍サイクル装置

Applications Claiming Priority (1)

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PCT/JP2017/028883 WO2019030841A1 (ja) 2017-08-09 2017-08-09 圧縮機および冷凍サイクル装置

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WO2019030841A1 true WO2019030841A1 (ja) 2019-02-14

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JP (1) JP6746000B2 (cs)
KR (1) KR102320908B1 (cs)
CN (1) CN111033052B (cs)
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WO (1) WO2019030841A1 (cs)

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JPWO2021181463A1 (cs) * 2020-03-09 2021-09-16
US20220127507A1 (en) * 2019-02-11 2022-04-28 Mexichem Fluor S.A. De C.V. Compositions
WO2025088751A1 (ja) * 2023-10-26 2025-05-01 三菱電機株式会社 圧縮機、及び冷凍サイクル装置

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CN201621038U (zh) * 2010-02-25 2010-11-03 东芝开利株式会社 压缩机及使用该压缩机的制冷循环装置
JP2011229221A (ja) * 2010-04-16 2011-11-10 Hitachi Appliances Inc 密閉形電動圧縮機，冷凍サイクル装置
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JP2009108837A (ja) * 2007-11-01 2009-05-21 Mitsubishi Electric Corp 圧縮機
JP2012082776A (ja) * 2010-10-13 2012-04-26 Toshiba Carrier Corp 密閉型圧縮機及び冷凍サイクル装置
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WO2021181463A1 (ja) * 2020-03-09 2021-09-16 東芝キヤリア株式会社 圧縮機、および冷凍サイクル装置
CN115103962A (zh) * 2020-03-09 2022-09-23 东芝开利株式会社 压缩机以及制冷循环装置
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JP7405946B2 (ja) 2020-03-09 2023-12-26 東芝キヤリア株式会社 圧縮機、および冷凍サイクル装置
JP2024022665A (ja) * 2020-03-09 2024-02-16 東芝キヤリア株式会社 圧縮機、および冷凍サイクル装置
CN115103962B (zh) * 2020-03-09 2024-07-02 东芝开利株式会社 压缩机以及制冷循环装置
WO2025088751A1 (ja) * 2023-10-26 2025-05-01 三菱電機株式会社 圧縮機、及び冷凍サイクル装置

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CN111033052B (zh) 2021-12-10
CZ309325B6 (cs) 2022-08-24
KR102320908B1 (ko) 2021-11-03
CZ202011A3 (cs) 2020-06-17
KR20200020860A (ko) 2020-02-26
JP6746000B2 (ja) 2020-08-26
CN111033052A (zh) 2020-04-17
JPWO2019030841A1 (ja) 2019-11-07

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