Abstract: It is an object of the present invention to provide an electric compressor capable of enhancing the mountability with respect to a vehicle without increasing the compressor in size when the electric compressor and a motor-driving circuit which drives a motor of the electric compressor are integrally formed together. A suction chamber 61 which is in communication with a fixed panel suction port 16 provided in a fixed scroll 11 from a suction port 8 provided in a sub-casing 102, and a discharge chamber 62 which is in communication with a communication passage 63 from a fixed panel discharge port 31 provided in the fixed scroll 11 are disposed on the same plane in a radial direction of a compressor, and the motor-driving circuit 101 is disposed in an axial direction of the compressor so that an IPM 105 which is a heat generating part of the circuit substrate 103 can be brought into tight contact with the suction chamber 61.

Abstract: A cooling space in an inverter case is disposed at a position opposed to a stationary scroll of a scroll compressor. A refrigerant having low temperature is allowed to flow in and out between the cooling space and the stationary scroll through a seal, thereby cooling an inverter.

Abstract: The present invention provides an electric compressor in which the centering operation between a container and a main bearing member can be carried out precisely, and the compressor can easily be assembled. A main bearing member is provided at its peripheral edge with an inserting portion and an abutting portion, an outer diameter of the inserting portion is set smaller than that of the abutting portion. The outer diameter of the inserting portion is set slightly smaller than an inner diameter of an opening end of the container. With this structure, a centering operation can be carried out precisely and easily, and the reliability and performance of the compressor are enhanced, and costs thereof can be reduced.

Abstract: In an electric compressor, an inverter case of an inverter is externally attached to an end wall of a housing in an axial direction on the side of a suction port to a compression mechanism. An intake passage for leading fluid returned from the outside into the suction port is provided in the inverter case. The intake passage has a thermal binding portion for thermally binding the intake passage to the inverter. According to the above structure, an exclusive part in the housing is eliminated even though the inverter is installed in the electric compressor, and the inverter is cooled efficiently.

Abstract: Lubricating liquid fed from a reservoir to a compression mechanism is collected by a circumferential wall that surrounds the drive shaft of the compression mechanism and rotates synchronously with it immediately after liquid is discharged into the space inside the housing with or without compressed fluid. Liquid is then urged outward under centrifugal force from an outlet formed at a preset axial location of the circumferential wall. Exiting liquid is received by a fixed liquid return cover that surrounds the circumferential wall near its outlet and led back to the reservoir.

Abstract: A linear compressor is provided in which a driving spring and an elastic supporting member for supporting a compressing mechanism portion are disposed such that a piston and the compressing mechanism portion move in opposite phases such that vibration of a hermetic vessel is canceled out. The linear compressor comprises a hermetic vessel having a compressing mechanism portion and a linear motor therein. The compressing mechanism portion includes a piston-side mechanism and a cylinder-side mechanism, the former includes the piston and the mechanism member which is movable together with the piston, the latter includes the cylinder and the stator which connects with the cylinder. The cylinder-side mechanism member is elastically supported at opposite ends in the hermetic vessel by a first elastic member, and a reciprocating force in the axial direction is given the piston-side mechanism by a second elastic member whose one end is supported by the hermetic vessel.

Abstract: Separated seating members are used to mount a compressor onto an engine of a mobile structure. The compressor has a compressing mechanism and an electric motor, which are accommodated in a case, and the separated seating members embrace and fix the case by mutually linking together. Mounting seats provided on the separated seating members are held against the engine, and are mounted by bolts.

Abstract: An electric motor accommodated fixedly in position within its own casing or a housing of a compressor is provided with a non-conductive member between its stator and the casing or the housing, for preventing the stator and the casing or housing from making contact with each other. The non-conductive member is made of a material having a thermal expansion coefficient greater than that of the stator, such as resin.

Abstract: It is an object of the present invention to provide a linear compressor in which a driving spring and a elastic supporting member for supporting a compressing mechanism portion are disposed such that a piston and the compressing mechanism portion move in reversed phases so that vibration of a hermetic vessel is canceled out. The linear compressor comprises a hermetic vessel having a compressing mechanism portion and a linear motor therein.

Abstract: Separated seating members are used to mount a compressor onto an engine of a mobile structure. The compressor has a compressing mechanism and an electric motor, which are accommodated in a case, and the separated seating members embrace and fix the case by mutually linking together. Mounting seats provided on the separated seating members are held against the engine, and are mounted by bolts.

Abstract: An electric motor accommodated fixedly in position within its own casing or a housing of a compressor is provided with a non-conductive member between its stator and the casing or the housing, for preventing the stator and the casing or housing from making contact with each other. The non-conductive member is made of a material having a thermal expansion coefficient greater than that of the stator, such as resin.

Abstract: A scroll compressor which can be easily sealed and assembled is presented. Also a scroll compressor which can be sealed easily and at low cost is presented. It includes a cylindrical front casing with a bottom, a rear cover to be fitted to the inner circumference of the front casing, a fixed scroll having an end plate to be fitted to the inner circumference, a fitting portion to be fitted concentrically to the rear cover, and a spiral blade disposed at the opposite side of the fitting portion, a movable scroll engaged with the fixed scroll and swiveling at a specified radius of swivel, and a rotation preventive mechanism for preventing rotation of the movable scroll and permitting swivel motion only.

Abstract: A compressor which can be easily assembled and can prevent damage of seal members is presented. Its assembling method includes of (a) a step of feeding a front casing having a first inner circumference, a second inner circumference, an opening, a bottom, and a side wall, compression units having a first fitting portion and a first seal groove, and a rear cover having a second fitting portion and a second seal groove, (b) a step of installing a first seal member in the fist seal groove, (c) a step of installing s second seal member in the second seal groove, (e) a step of installing the fixed scroll on the front casing, while fitting the first fitting portion to the first inner circumference, and (f) a step of installing the rear cover to the front casing so as to cover the opening, while fitting the second fitting portion to the second inner circumference.

Abstract: A scroll compressor includes an orbital drive mechanism for orbiting an orbiting scroll relative to a stationary scroll. The orbiting scroll is formed with a generally cylindrical boss extending in a direction away from the stationary scroll. The orbital drive mechanism includes a main shaft rotatably supported by a compressor housing, an eccentric shaft extending from one end face of the main shaft and having a longitudinal axis parallel to, but offset laterally from a longitudinal axis of the main shaft, and an eccentric bush having a socket inserted rotatably into the cylindrical boss. The eccentric shaft, engaged in the socket, has first and second rounded side faces opposite to each other both having a common center of curvature, while the socket has first and second inner wall portions opposite to each other, each of which has a center of curvature substantially aligned with the common center of curvature of the first and second rounded side faces of the eccentric shaft.