Abstract: A fixed scroll member includes a fixed base and a spiral fixed tooth member mounted to the fixed base. An orbiting scroll member is made of a resin material and includes an orbiting base arranged to face the fixed base; and a spiral orbiting tooth member. A housing is configured to house the fixed scroll member and the orbiting scroll member with the fixed scroll member being fixed thereto. An orbiting slide surface is located to be radially outside of the orbiting base of the orbiting scroll member, and a housing slide surface is formed on a portion of the housing. The portion is made of a metal material and is arranged to face the orbiting slide surface. The orbiting slide surface is in slidable contact with the housing slide surface. The portion of the housing has an outer wall exposed to atmospheric air.

Abstract: An oil separator includes a separation part and an oil storage part. The separation part includes a separation cylinder, an inner cylinder disposed in the separation cylinder and an inlet pipe connecting to the separation cylinder tangential to an inner surface of the separation cylinder. The separation part defines an inlet opening to introduce CO2 refrigerant containing oil in the separation cylinder. The separation cylinder separates the oil from the CO2 refrigerant by means of centrifugal force. A ratio of a flow rate (kg/h) of the CO2 refrigerant flowing in the separation cylinder to an area (mm2) of the inlet opening is at least 4. Alternative to or in addition to the above, a ratio of a distance (mm) from an end of the inner cylinder to a bottom wall of the separation cylinder to an inner diameter (mm) of the separation cylinder is at least 2.5.

Abstract: A compressor comprises an oil separator for separating oil from a refrigerant compressed by a compression mechanism unit, and a high-pressure oil storage chamber for storing the oil separated by the oil separator. At least a portion of the oil separator is provided outside a housing. The high-pressure oil storage chamber has an outer wall that is thicker than the outer wall of the housing accommodating the compression mechanism unit, and an end wall of the housing is formed by this thicker outer wall.

Abstract: A scroll compressor (11) comprising a thrust bearing (53) including a first sliding surface (100) and a second sliding surface (101) in opposed relation to the first sliding surface (100) is disclosed. The first sliding surface (100) is formed with a plurality of insular pressure-receiving portions (83) surrounded by grooves (85) and independent of each other. The part of the second sliding surface (101) in opposed relation to the pressure-receiving portions (83) is flat as compared with the first sliding surface (100). The outermost front surface of the second sliding surface (101) is formed with a diamond-like carbon layer (101a).

Abstract: A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.

Abstract: A scroll compressor is disclosed. A plurality of grooves (85) communicating with each other are formed on a sliding surface of a thrust bearing (53) subjected to the axial force received by a movable scroll (32). The areas surrounded by the plurality of the grooves (85) make up a plurality of insular pressure receiving portions (83) independent of each other. The pressure receiving portions (83) represent at least one half of the area of the sliding surface.

Abstract: A waste heat collecting system for an internal combustion engine has an object to collect waste heat from the engine and make most use of the collected waste heat to achieve the maximum effect of improving fuel consumption ratio. The waste heat utilizing system has a waste heat collecting cycle for collecting waste heat from an internal combustion engine and having an expansion device for generating rotational driving force from the collected waste heat, a refrigerating cycle having a compressor device for compressing a refrigerant and a power transmitting means rotationally driven by a driving force generating means and operatively connected to the compressor device to rotationally drive the same. In this system, the expansion device is operatively connected to the compressor device to rotationally drive the same.

Abstract: A scroll compressor (11) comprising a thrust bearing (53) including a first sliding surface (100) and a second sliding surface (101) in opposed relation to the first sliding surface (100) is disclosed. The first sliding surface (100) is formed with a plurality of insular pressure-receiving portions (83) surrounded by grooves (85) and independent of each other. The part of the second sliding surface (101) in opposed relation to the pressure-receiving portions (83) is flat as compared with the first sliding surface (100). The outermost front surface of the second sliding surface (101) is formed with a diamond-like carbon layer (101a).

Abstract: A switch valve structure of a fluid machine (10) having a pump mode to operate as a compressor and a motor mode to operate as an expander is disclosed. In pump mode, a communication path (106) between a working chamber (V) and a high-pressure chamber (104) is closed, while in motor mode, the communication path (106) is opened by a valve unit (107d). The valve unit (107d) is includes a spool portion (117) sliding in the direction substantially perpendicular to the surface to which the communication path (106) opens and a valve portion (127) arranged at the forward end of the spool portion (127) and sliding with the spool portion (117) thereby to open/close the communication path (106). A swivel mechanism (137) is interposed between the spool portion (117) and the valve portion (127) to tilt the sliding axis of the valve portion (127) at an arbitrary angle with respect to the sliding axis of the spool portion (117).

Abstract: An oil separator includes a separation part and an oil storage part. The separation part includes a separation cylinder, an inner cylinder disposed in the separation cylinder and an inlet pipe connecting to the separation cylinder tangential to an inner surface of the separation cylinder. The separation part defines an inlet opening to introduce CO2 refrigerant containing oil in the separation cylinder. The separation cylinder separates the oil from the CO2 refrigerant by means of centrifugal force. A ratio of a flow rate (kg/h) of the CO2 refrigerant flowing in the separation cylinder to an area (mm2) of the inlet opening is at least 4. Alternative to or in addition to the above, a ratio of a distance (mm) from an end of the inner cylinder to a bottom wall of the separation cylinder to an inner diameter (mm) of the separation cylinder is at least 2.5.

Abstract: A complex fluid machine (100) comprises a compressor device (110) for a refrigerating cycle (20) and an expansion device (120) for Rankine cycle (30) to collect waste heat from an engine (10) and convert into a rotational force, wherein the compressor device (110) and the expansion device (120) are arranged in a fluid machine housing (111, 101c, 121), but those devices (110, 120) are operatively independent from each other. The compressor and expansion devices (110, 120) are formed as scroll type devices, and each of the fixed scroll wraps (112b, 122b) are formed at a common base plate (101) and extend in opposite directions.

Abstract: A compressor comprises an oil separator for separating oil from a refrigerant compressed by a compression mechanism unit, and a high-pressure oil storage chamber for storing the oil separated by the oil separator. At least a portion of the oil separator is provided outside a housing. The high-pressure oil storage chamber has an outer wall that is thicker than the outer wall of the housing accommodating the compression mechanism unit, and an end wall of the housing is formed by this thicker outer wall.

Abstract: A complex fluid machine has an expansion-compressor device, a pump, and a motor generator, wherein the expansion-compressor device, the pump, and the motor generator are operatively connected and arranged in series, and a power transmitting device for disconnecting the pump from the motor generator, when the expansion-compressor device is driven by the motor generator so as to be operated as a compressor device.

Abstract: A check valve is provided to each discharge port, which communicates between a corresponding working chamber and a high pressure chamber in an integrated compressor/expander apparatus. A valve mechanism, which is opened in a motor mode, is provided to communicate between the working chamber and the high pressure chamber.

Abstract: After the tooth portion 102b of the stationary scroll 102 and the tooth portion 103b of the revolving scroll 103 have contacted each other on one contact face 121 in the central portion of the scroll (shown in FIG. 5A), when this contact face 121 is shifted to two sliding contact portions 122, 123, the operating chamber V is formed between the two sliding contact portions 122, 123 (shown in FIG. 5B), and the refrigerant introducing port 105a is open to the region on the contact face 121. Accordingly, the operating chamber can be instantaneously changed over while the sealing property is ensured. Due to the above structure, the sealing property for suppressing leakage from the high pressure side at the time of the expansion mode can be compatible with the smoothing property for smoothing a change-over of the scroll operating chamber successively formed.

Abstract: A scroll compressor is disclosed. A plurality of grooves (85) communicating with each other are formed on a sliding surface of a thrust bearing (53) subjected to the axial force received by a movable scroll (32). The areas surrounded by the plurality of the grooves (85) make up a plurality of insular pressure receiving portions (83) independent of each other. The pressure receiving portions (83) represent at least one half of the area of the sliding surface.

Abstract: An outer end of a seal element for a fixed scroll is extended to a position close to an end of an inside spiral wall of the fixed scroll, and an outwardly extended portion is formed at an outer periphery of a disc-shaped base plate of a movable scroll, so that a bottom surface of the movable scroll is always kept in a sliding contact entirely with the seal element during the orbital movement of the movable scroll. A thickness of the outwardly extended portion formed at the outer periphery of the disc-shaped base plate is made smaller than that of the disc-shaped base plate, so that the weight of the fluid machine can be smaller.

Abstract: In a hybrid compressor for a vehicle where a vehicle engine is stopped when the vehicle is temporally stopped, a pulley, a motor and a compressor can be driven in independent from each other, and are connected to a sun gear, planetary carriers and a ring gear of a planetary gear. A rotational speed of the motor is adjusted by a controller, so that a rotational speed of the compressor is changed with respect to a rotational speed of the pulley. Accordingly, production cost of the hybrid compressor and the size thereof can be reduced, while a cooling function can be ensured even when the vehicle engine is stopped.

Abstract: A low-cost vehicle air-conditioning apparatus for idle stopping vehicles is capable of performing both cooling and heating operations throughout the year. The air-conditioning apparatus includes an engine-driven compressor and engine-driven pump for a heating unit. The air-conditioning apparatus includes a motor-driven compressor and pump. A control unit drives the motor such that the motor-driven compressor is operated when there is a need for cooling and the motor-driven pump is operated when there is a need for heating when the engine is stopped. Battery power is conserved through various methods.

Abstract: A compressor device compresses refrigerant of a refrigeration cycle system and is connected to an engine and a motor to selectively receive drive force from one or both of the engine and the motor. When the engine is operated in an idling mode, a control apparatus energizes the motor to drive the compressor device alone or in cooperation with the engine and controls the energization of the motor to adjust load on the engine.