Abstract: The purpose of the present invention is to suppress noise caused by contact between a depression and a ring. Provided is an electric compressor comprising: a housing that forms an outer shell; a fixed scroll that is housed in the housing and fixed on the housing side; a turning scroll that meshes with the fixed scroll and turns with respect to the fixed scroll; an autorotation inhibiting mechanism (30) that inhibits autorotation of the turning scroll; and a lubricant supply unit that supplies a lubricant to the autorotation inhibiting mechanism (30). The autorotation inhibiting mechanism (30) has: a ring hole (32) which is formed in the turning scroll; a ring (33) which is disposed in the ring hole (32), and the outer circumferential surface (33b) of which faces the inner circumferential surface 32a of the ring hole (32); and a pin (34) which is provided to the housing and which engages with the inner circumferential surface (33a) of the ring (33).

Abstract: This electric compressor (10) has: an accommodating case (15) that accommodates an inverter device (19) and includes an accommodating section body (31), a substrate support section (32) protruding from a bottom surface (31a) of the accommodating section body (31), and a cover member (34) that closes an opening in the accommodating section body (31); and an antivibration member (17) that is positioned between one surface (51a) of a head part (51) of a bolt (16) fastened to the substrate support section (32) and an inner surface (34a) of the cover member (34), and that is bonded to the one surface (51a) of the head part (51) and the inner surface (34a) of the cover member (34).

Abstract: An electric compressor has an electric motor housed in a casing and that drives a compression part for compressing a refrigerant guided into the casing, and a connecting part accommodating container in which an external power line is guided from an exterior of the casing, and accommodating a connecting part for electrically connecting the external power line that supplies power to the electric motor and an internal power line guided from the electric motor. An insertion hole through which the internal power line is inserted is provided to the connecting part container; the connecting part container can be split with a splitting line for splitting the connecting part container and splitting the insertion hole; a first rubber ring for blocking off the insertion hole in a liquid-tight state is disposed inside the connecting part container; and the first rubber ring is sandwiched between split walls forming the insertion hole.

Abstract: A motor rotor equipped with a cylindrical rotor core formed by stacking multiple electromagnetic steel plates, end plates and balance weights stacked at both ends of the rotor core, and multiple headed swaging pins penetrating and integrally connecting the rotor core, the end plates, and the balance weights, wherein spacers or washers formed of a harder material than the swaging pins are interposed between the seating surface of the balance weights and the heads of the swaging pins. Thus, resistance of the motor rotor to excessive excitation force can be increased and a decrease in fastening strength can easily be prevented without changing the structure integrally fastened together by the swaging pins.

Abstract: A scroll compressor includes a flow path that is disposed in a portion of a bearing holder, which corresponds to each formation position of a plurality of stator groove portions, and that penetrates the bearing holder in an axial direction, a first recess portion (72) disposed in a portion of a thrust bearing, which faces the flow path, and recessed from one side in the axial direction to the other side in the axial direction, and a first groove portion (74) disposed in an outer peripheral portion of the first recess portion (72), extending from a bottom surface (72a) of the recess portion (72) to a surface located on a side opposite to a surface having the first recess portion (72) formed thereon, and communicating with the first recess portion (72) in the axial direction.

Abstract: The purpose of the present invention is to provide a connecting part accommodating container for insulating an external power line without compromising ease of assembly, and an electric compressor provided therewith.

Abstract: A connecting part accommodating container for insulating an external power line and an electric compressor. The electric compressor comprising an electric motor that is housed in a casing and drives a compression part for compressing a refrigerant guided into a casing, and a connecting part accommodating container in which an external power line is guided from the exterior of the casing, and which is for accommodating a connecting part for electrically connecting in the interior of the casing the external power line that supplies power to the electric motor and an internal power line that is guided from the electric motor.

Abstract: A scroll compressor includes a flow path that is disposed in a portion of a bearing holder, which corresponds to each formation position of a plurality of stator groove portions, and that penetrates the bearing holder in an axial direction, a first recess portion (72) disposed in a portion of a thrust bearing, which faces the flow path, and recessed from one side in the axial direction to the other side in the axial direction, and a first groove portion (74) disposed in an outer peripheral portion of the first recess portion (72), extending from a bottom surface (72a) of the recess portion (72) to a surface located on a side opposite to a surface having the first recess portion (72) formed thereon, and communicating with the first recess portion (72) in the axial direction.

Abstract: Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.

Abstract: An inverter-integrated electric compressor according to the present invention is provided with an inverter case for forming an inverter-accommodating space for housing an inverter device, and an inverter cover configured to close an opening of the inverter-accommodating space. The inverter case is assembled with the inverter cover using a spigot joint, and when the inverter cover closes the opening of the inverter-accommodating space, an end-face-opposing face that opposes an end face of the inverter cover is formed. Such an inverter-integrated electric compressor may make it unlikely for the end face of the inverter cover to be exposed to corrosive environments, and may suppress corrosion of the end face of the inverter cover.

Abstract: Provided are: an oil separator with which oil-separation efficiency can be improved by reliably capturing oil once separated, and inhibiting the re-entrainment of the oil; and a compressor provided with the oil separator. This oil separator (1) is provided with a cylindrical separation cylinder (2), and is configured such that oil included in a gas flowing in from a gas inflow port (5) provided along an inner circumferential surface (4) of the separation cylinder (2) in a tangential direction is centrifugally separated, and the separated oil is discharged from one end side of the separation cylinder (2), while the gas is discharged from another end side of the separation cylinder (2). The oil separator (1) has, provided to the inner circumferential surface (4) of the separation cylinder (2) therein, an opening (9) which communicates with the gas inflow port (5), and a plurality of oil-capturing openings (10) which protrude toward and are open at an inner circumferential side.

Abstract: A motor rotor equipped with a cylindrical rotor core formed by stacking multiple electromagnetic steel plates, end plates and balance weights stacked at both ends of the rotor core, and multiple headed swaging pins penetrating and integrally connecting the rotor core, the end plates, and the balance weights, wherein spacers or washers formed of a harder material than the swaging pins are interposed between the seating surface of the balance weights and the heads of the swaging pins. Thus, resistance of the motor rotor to excessive excitation force can be increased and a decrease in fastening strength can easily be prevented without changing the structure integrally fastened together by the swaging pins.

Abstract: Provided is a motor rotor which, without changing an integral fastening structure relying on swage pins, increases resistance to the excessive excitation force of the motor rotor and which can easily prevent decreases in fastening strength; a motor that uses the motor rotor, and an electric compressor are also provided. This motor rotor is provided with a cylindrical rotor core comprising multiple laminated magnetic steel sheets, end plates and balance weights laminated on both ends of the rotor core, and multiple headed swage pins which are inserted from one side and which integrally fasten the rotor core, the end plates and the balance weights. The material of the balance weight arranged to the head of the swage pin is harder than that of the swage pin, and the material of the balance weight arranged to the swage part of the swage pin is softer than that of the swage pin.

Abstract: An electric compressor includes a motor, a scroll compression mechanism, a housing, a circuit unit, a circuit housing housing the circuit unit and integrated with the housing. The electric compressor includes a heat sink provided on a circuit unit side of a partition wall so as to project to be brought into contact with a semiconductor element of a power substrate, facing the partition wall that erects along a vertical direction to separate the inside of the housing from the circuit housing. The heat sink has a lower surface and an upper surface formed into a cylindrical shape so that width of an upper end portion and a lower end portion of the heat sink gradually decreases to reach a tip portion.

Abstract: An inverter-integrated electric compressor according to the present invention is provided with an inverter case for forming an inverter-accommodating space for housing an inverter device, and an inverter cover configured to close an opening of the inverter-accommodating space. The inverter case is assembled with the inverter cover using a spigot joint, and when the inverter cover closes the opening of the inverter-accommodating space, an end-face-opposing face that opposes an end face of the inverter cover is formed. Such an inverter-integrated electric compressor may make it unlikely for the end face of the inverter cover to be exposed to corrosive environments, and may suppress corrosion of the end face of the inverter cover.

Abstract: The properties of lubricating oil are utilized to avoid excessive quality in terms of the circularity of roller members while reducing the noise from a radial roller bearing alone during rotation and thereby reducing the noise from a rotary machine. The radial roller bearing includes an outer ring member (30A), a plurality of roller members (30B), and a retainer, and a lubricating oil (O) is supplied between the outer ring member (30A) or a rotating shaft and the roller members (30B). The circularity (?R) of the roller members (30B) in a cross section perpendicular to a centerline (CL) thereof is set to be lower than or equal to the minimum oil film thickness (hmin) of an oil film formed by the lubricating oil (O).

Abstract: In rollers used in a radial needle bearing, the circularity of crowning sections provided at opposite ends of each roller is 0.6 ?m or smaller. This allows for reduction of sound (noise) produced when the radial needle bearing rotates by itself and can also allow for reduction of sound (noise) of a rotational machine when the radial needle bearing is installed and rotates therein.

Abstract: Provided are: an oil separator with which oil-separation efficiency can be improved by reliably capturing oil once separated, and inhibiting the re-entrainment of the oil; and a compressor provided with the oil separator. This oil separator (1) is provided with a cylindrical separation cylinder (2), and is configured such that oil included in a gas flowing in from a gas inflow port (5) provided along an inner circumferential surface (4) of the separation cylinder (2) in a tangential direction is centrifugally separated, and the separated oil is discharged from one end side of the separation cylinder (2), while the gas is discharged from another end side of the separation cylinder (2). The oil separator (1) has, provided to the inner circumferential surface (4) of the separation cylinder (2) therein, an opening (9) which communicates with the gas inflow port (5), and a plurality of oil-capturing openings (10) which protrude toward and are open at an inner circumferential side.

Abstract: An electric compressor includes a motor, a scroll compression mechanism, a housing, a circuit unit, a circuit housing housing the circuit unit and integrated with the housing. The electric compressor includes a heat sink provided on a circuit unit side of a partition wall so as to project to be brought into contact with a semiconductor element of a power substrate, facing the partition wall that erects along a vertical direction to separate the inside of the housing from the circuit housing. The heat sink has a lower surface and an upper surface formed into a cylindrical shape so that width of an upper end portion and a lower end portion of the heat sink gradually decreases to reach a tip portion.

Abstract: The purpose of the present invention is to provide a connecting part accommodating container for insulating an external power line without compromising ease of assembly, and an electric compressor provided therewith.