Provided is a scroll fluid machine which can appropriately set a tip clearance between a tooth base and a tooth crest having an inclined portion and can achieve desired performance. An inclined portion in which a distance between opposing surfaces of an end plate of a fixed scroll and an end plate of an orbiting scroll facing each other gradually decreases from an outer peripheral side toward an inner peripheral side is provided. A tip clearance between a tooth crest of a wall of the orbiting scroll and a tooth base of the end plate of the fixed scroll facing the tooth crest at normal temperature is greater on the inner peripheral side than on the outer peripheral side.

A mutual rotating scroll compressor includes: a first frame fixed to a casing; a second frame provided with an interval between the first frame and the second frame, a compression space being provided between the first frame and the second frame; a first scroll rotatably supported by the first frame and coupled to a driving motor to rotate in the compression space; a second scroll engaged with the first scroll to rotate about the second frame, the second scroll and the first scroll forming a compression chamber in the compression space; and a bearing housing including a housing part, including a boss accommodation part to which the second scroll is rotatably coupled, and a hinge lug which extends from the housing part and is movably coupled to the second frame.

To provide a scroll fluid machine that can improve reliability in abrasion resistance of a power transmission mechanism including a pin member and a ring member. The machine includes a driving scroll member (20), a driven scroll member (22), and a power transmission mechanism (26) that transmits power to synchronously rotate both scroll members (20, 22) and allow the scroll members to revolve and orbit relative to each other. The power transmission mechanism (26) includes a pin (30) attached to the driven scroll member (22), a ring body (34) provided in the driving scroll member (20) and having an inner circumference in contact with an outer circumference of the pin (30), and a circular groove (32) housing the ring body (34) and having an inner circumference in contact with an outer circumference of the ring body (34). Of surface contact pressure in a contact portion between the outer circumference of the pin (30) and the inner circumference of the ring body (34), and surface contact pressure in a contact portion between the outer circumference of the ring body (34) and the inner circumference of the circular groove (32), the contact portion having higher surface contact pressure has a larger frictional torque.

Disclosed herein is an apparatus that includes a first buffer circuit, a plurality of first driver circuits configured to drive the first buffer circuit, and a plurality of first switch circuits configured to supply an operation voltage to the first driver circuits, respectively. The first driver circuits are collectively arranged in a first region in a matrix, and the first switch circuits are collectively arranged in a second region different from the first region.

To provide a scroll fluid machine that can improve reliability in abrasion resistance of a power transmission mechanism including a pin member and a ring member. The machine includes a driving scroll member (20), a driven scroll member (22), and a power transmission mechanism (26) that transmits power to synchronously rotate both scroll members (20, 22) and allow the scroll members to revolve and orbit relative to each other. The power transmission mechanism (26) includes a pin (30) attached to the driven scroll member (22), a ring body (34) provided in the driving scroll member (20) and having an inner circumference in contact with an outer circumference of the pin (30), and a circular groove (32) housing the ring body (34) and having an inner circumference in contact with an outer circumference of the ring body (34). Of surface contact pressure in a contact portion between the outer circumference of the pin (30) and the inner circumference of the ring body (34), and surface contact pressure in a contact portion between the outer circumference of the ring body (34) and the inner circumference of the circular groove (32), the contact portion having higher surface contact pressure has a larger frictional torque.

A compressor may include a shell, first and second compression mechanisms, and first and second motor assemblies. The first compression mechanism may include first and second compression members that are rotatable relative to the shell about first and second rotational axes, respectively. The first motor assembly may be disposed within the shell and may include a first rotor attached to the first compression member. The second compression mechanism may include third and fourth compression members that are rotatable relative to the shell about third and fourth rotational axes, respectively. The second motor assembly may be disposed within the shell and may include a second rotor attached to the third compression member.

A co-rotating scroll compressor is provided in which pressure differences between inner and outer portions of a suction chamber are maintained, back pressures are applied to rear surfaces of end plates of a drive scroll and a driven scroll in directions in which the two scrolls are moved toward each other to prevent compression leakage of a fluid, and a lubricant oil is easily supplied to the two scrolls using the back pressures. The co-rotating scroll compressor may include pressure seals between the rear surfaces of the end plates of the drive scroll and the driven scroll and an inner wall of the suction chamber such that the two scrolls are pressed in directions to be moved toward each other by the back pressures, and the oil is supplied to rotary supports and close contact portions of the two scrolls using the back pressures.

A system may include a first compressor, a second compressor, a first heat exchanger and a second heat exchanger. The first compressor has a first inlet and a first outlet. The second compressor is a sumpless compressor and has a second inlet and a second outlet. The second compressor provides working fluid discharged from the second outlet to the first compressor. The first heat exchanger is disposed upstream of the second compressor and provides working fluid to the second compressor. The second heat exchanger is disposed upstream of the first compressor and provides working fluid to the first compressor.

Systems and methods for providing lubricant from a first compressor to a second compressor are provided. A control module receives a start command for a climate-control system having the first and second compressors, allows lubricant from the first compressor to flow into an inlet of the second compressor, turns the second compressor to an ON-mode, and prevents lubricant from the first compressor from flowing into the inlet of the second compressor after the second compressor has been in the ON-mode for a predetermined time period.

A co-rotating scroll is disclosed having a motor having a shaft, a drive scroll connected to the shaft for moving the drive scroll, a driven scroll connected to the drive scroll to be moved by the drive scroll, and an idler shaft for aligning the drive scroll and the driven scroll and for allowing the driven scroll to be moved by the drive scroll.