Abstract: A variable displacement compressor has a drive shaft, a rotor supported by the drive shaft, a drive plate supported by the drive shaft and a hinge mechanism located between the rotor and the drive plate. The hinge mechanism includes a cam, which is located on the rotor, and a guide portion, which is located on the drive plate. The cam has a cam surface, which has a predetermined profile. One of the cam surface and the guide portion slides against the other in accordance with inclination of the drive plate. The guide portion traces a path corresponding to the profile of the cam surface with respect to the cam. The path includes a first path corresponding to a small displacement region of the compressor and a second path corresponding to a large displacement region of the compressor. The profile of the cam surface is determined such that the first path and the second path bulge in a direction opposite to each other to compensate for fluctuation of a top dead center position of the piston.

Abstract: An electromagnetic spring clutch may be utilized to engage a drive shaft 8 of a auxiliary machine for vehicle 2 and may include an input pulley 1 rotatably supported by a housing of the auxiliary machine for vehicle 2. An electromagnetic coil 5a may be disposed within the input pulley 1 and an armature 11 may be reversibly coupled to the input pulley 1 by the electromagnetic coil 5a. An output hub 7 may transmit torque applied to the input pulley 1 to the drive shaft 8. Preferably, the output hub 7 is prevented from moving in an axial direction relative to the drive shaft 8 and a clearance C is defined between the input pulley 1 and the output hub 7. Preferably, the clearance C is prevented from increasing during operation. A coil spring 4 may couple the armature 11 to the output hub 7. The coil spring is preferably prevented from the intruding into the clearance C between the input pulley 1 and the output hub 7.

Abstract: A rotary valve is used as a suction valve mechanism of a compressor. The rotary valve rotates integrally with a drive shaft to selectively open or close a suction passage of refrigerant gas from a suction chamber to a compression chamber in accordance with relative positions of the suction communicating passage and the suction guiding groove. An outer surface of the rotary valve directly slides on an inner surface of a valve accommodating chamber formed in a cylinder block, thereby constituting a slide bearing surface. The slide bearing surface rotatably supports the rear end of the drive shaft on housings. Accordingly, a piston type compressor which is comfortably used, inexpensively manufactured, and has high compression efficiency is provided.

Abstract: Fluid heating devices may be utilized, for example, to heat a vehicle coolant and may include a rotor body rotatably supported within a rotor housing. A plurality of blades may be disposed on a circumferential surface of the rotor body and a channel may be defined between each two adjacent blades. Each channel has a base portion, an inner circumferential end and an outer circumferential end. Preferably, the inner circumferential end is longer than the outer circumferential end as measured from the base portion. Further, the outer circumferential ends of the channels may define wall portions and the wall portions are preferably shorter than the inner circumferential ends as measured from the base portions of the channels. In view of this design, it is not necessary to provide shields toward the outer circumferential ends of the channels.

Abstract: A scroll type compressor has a housing, a fixed metal scroll member and a movable metal scroll member. The fixed and the movable scroll members each have a base plate and scroll wall extending therefrom. The fixed scroll member is fixed to the housing. The movable scroll member engages the fixed scroll member to trace an orbital motion when driven by a crank mechanism. The scroll members define compression chambers. Resin tip seals are respectively provided on distal ends of the scroll walls and slidably engage the metallic surfaces of the facing base plates. The tip seals seal the compression chambers. A resin coating layer is formed on a region of at least one of the end surfaces of the base plates that is not contacted by a tip seal.

Abstract: A compressor has a compression unit, a drive motor, a motor housing and an outer cylinder. The compression unit compresses fluid. The drive motor drives the compression unit. The motor housing surrounds the drive motor. The outer cylinder is mounted on an outer circumferential side of the motor housing for defining a cooling jacket between the outer cylinder and the motor housing for cooling the drive motor by a refrigerant flowing in the cooling jacket. The outer cylinder is directly or indirectly fixed to the motor housing by fastening a plurality of bolts or by press-fitting.

Abstract: A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The drive shaft is connected to the compression unit for driving the compression unit. Imbalance on the drive shaft is generated due to movement of the compression unit. The balancer is mounted on the drive shaft and includes a main portion and adjustable portion for correcting the imbalance on the drive shaft. Preferably, at least one of the weight and the shape of the adjustable portion is adjustable.

Abstract: The scroll-type compressor with an integrated motor of the present invention comprises a housing 1, a fixed scroll 21 fixed to the housing 1, a movable scroll 31 installed eccentrically to the fixed scroll 21, and a motor portion 5, and is characterized in that the housing 1 comprises a high pressure chamber 25 to which compressed gases are supplied, a first cooling chamber 26′ installed contiguous to the high pressure chamber 25 and to which cooling fluid is supplied, a second cooling chamber 42 which cools the motor portion 5 and is supplied with the cooling fluid, and a fluid passage 7 that connects the first cooling chamber 26′ and the second cooling chamber 42 and passes the cooling fluid in the direction from the first cooling chamber 26′ to the second cooling chamber 42.

Abstract: A scroll type compressor has a housing, a drive shaft, a fixed scroll member, a movable scroll member, a suction port and a discharge port. The drive shaft is rotatably supported by the housing. The fixed scroll member is fixed to the housing. The movable scroll member is accommodated in the housing, and the faces the fixed scroll member. The housing and the fixed scroll member define a cooling region. The fixed scroll member and the movable scroll member define a compression region. The suction port introduces gas into the compressor. The discharge port discharges the gas. Heat resistant means is disposed at least between the cooling region and the compression region. Heat resistance of the heat resistant means adjacent to the outermost compression region is greater than that of the heat resistant means adjacent to the innermost compression region.

Abstract: A scroll type compressor includes a housing, a fixed scroll member, a movable scroll member, a discharge port, a cooling chamber and a gas cooler. The fixed scroll member is fixed to the housing. The movable scroll member is accommodated in the housing and defining a compression region with the fixed scroll member where gas is compressed by orbiting the movable scroll member relative to the fixed scroll member. The compressed gas is discharged from the compression region through the discharge port. The cooling chamber for cooling the compressed gas is disposed in the vicinity of the compression region in the housing. The gas cooler for passing the gas discharged from the discharge port extends along the cooling chamber.

Abstract: A scroll-type compressor 1 of the present invention comprises a fixed scroll 30, a movable scroll 51 which orbits so that it slides along the fixed scroll 30, draws, and compresses gas, and a housing 3 which includes a discharge port 6 from which the gas compressed by the movable scroll 51 is discharged; wherein a cooling fin 35, which directly contacts at least a part of the compressed gas, receives heat from the compressed gas, and reduces the temperature of the compressed gas, is included inside the discharge port 6. In the scroll-type compressor in the present invention the cooling fin is provided in the discharge port. When the cooling fin is provided in the discharge port, and not around the discharge port, the discharge gas of high temperature directly contacts the cooling fin, so that the cooling efficiency of the compressor is improved.

Abstract: The scroll-type compressor with an integrated motor of the present invention comprises a housing 1, a fixed scroll 21 fixed to the housing 1, a movable scroll 31 installed eccentrically to the fixed scroll 21, and a motor portion 5, and is characterized in that the housing 1 comprises a high pressure chamber 25 to which compressed gases are supplied, a first cooling chamber 26′ installed contiguous to the high pressure chamber 25 and to which cooling fluid is supplied, a second cooling chamber 42 which cools the motor portion 5 and is supplied with the cooling fluid, and a fluid passage 7 that connects the first cooling chamber 26′ and the second cooling chamber 42 and passes the cooling fluid in the direction from the first cooling chamber 26′ to the second cooling chamber 42.

Abstract: In a scroll compressor with an electric motor incorporated of the present invention, a housing is provided with a cooling chamber which is provided adjacently on the outer peripheral side of a motor portion, so that cooling fluid is supplied to the cooling chamber, and a high pressure chamber which is provided adjacently on the outer peripheral side of the cooling chamber so that a gas, compressed by a fixed scroll and a movable scroll, is supplied to the high pressure chamber. Consequently, reduction in the mass flow rate of the discharge gas of the compressor can be suppressed, and it is possible to cool both the discharge gas and the motor portion by the single cooling chamber.

Abstract: A scroll compressor for a fuel a cell which vibrates little and is compact in size. The scroll compressor includes a front housing formed integrally with a stationary scroll, a center housing molded as a unitary structure coupled to the front housing and covering at least a portion of a drive crank mechanism and a portion of a drive motor, and a rear housing coupled to the center housing and covering the rear side of the drive motor. The front housing, the center housing and the rear housing form an outer shell of the compressor. The center housing that is molded as a unitary structure helps markedly increase the rigidity as a whole, and suppresses the vibration of the scroll compressor for a fuel cell.

Abstract: A heating pump 10 includes a rotor 20 having a plurality of blades 21. A dividing wall 15 radially extends within an interior portion of the heating pump 10. The dividing wall 15 has a width W. A distance L is defined along a circular arc between adjacent blades 21 in an intermediate position 21a along the radial direction of the blades 21. A ratio W/L is preferably about 0.07 to 0.36, more preferably about 0.11 to 0.30 and most preferably, about 0.20.

Abstract: Fluid heating devices may be utilized, for example, heat a vehicle coolant and may include a rotor body rotatably supported within a rotor housing. A plurality of blades may be disposed on a circumferential surface of the rotor body and a channel may be defined between each two adjacent blades. Each channel has a base portion, an inner circumferential end and an outer circumferential end. Preferably, the inner circumferential end is longer than the outer circumferential end as measured from the base portion. Further, the outer circumferential ends of the channels may define wall portions and the wall portions are preferably shorter than the inner circumferential ends as measured from the base portions of the channels. It is not necessary to provide shields toward the outer circumferential ends of the channels.

Abstract: Fluid heating devices preferably include a housing defining an actuation chamber and having a suction port and a discharge port. The housing may comprise a front housing and a rear housing. Preferably, at least one of the front housing and/or the rear housing is made of a resin, such as polyphenylene sulfide. A rotor may be rotatably disposed within the actuation chamber. The rotor preferably operates to pressurize fluid drawn from the suction port and to release pressurized fluid from the discharge port. A drive shaft is preferably connected to the rotor. One end portion of the drive shaft may be rotatably supported by the front housing member via a bearing. A throttle may communicate with the pressurized fluid released from the discharge port and apply a braking force to the pressurized fluid.

Abstract: An electromagnetic spring clutch may be utilized to engage a drive shaft 8 of a auxiliary machine for vehicle 2 and may include an input pulley 1 rotatably supported by a housing of the auxiliary machine for vehicle 2. An electromagnetic coil 5a may be disposed within the input pulley 1 and an armature 11 may be reversibly coupled to the input pulley 1 by the electromagnetic coil 5a. An output hub 7 may transmit torque applied to the input pulley 1 to the drive shaft 8. Preferably, the output hub 7 is prevented from moving in an axial direction relative to the drive shaft 8 and a clearance C is defined between the input pulley 1 and the output hub 7. Preferably, the clearance C is prevented from increasing during operation. A coil spring 4 may couple the armature 11 to the output hub 7. The coil spring is preferably prevented from the intruding into the clearance C between the input pulley 1 and the output hub 7.

Abstract: A heat generator comprises a partitioning wall 34 in opposed relation to a rotor in a heat generating area, in which the partitioning wall is formed with a supply groove 38 for introducing the viscous fluid to the outer peripheral area of the heat generating area from a storage area, and a recovery groove 39 for leading out the viscous fluid to the storage area from the outer peripheral area of the heat generating area. The shape, position and the mounting angle of the supply groove 38 and the recovery groove 39 are designed to set the outflow ratio &agr; to not more than 0.92. The outflow ratio &agr; is defined as the ratio (&agr;=Qout1/Qin) of the amount Qout1 of the viscous fluid flowing out from the heat generating area due to the forcible transfer function of the recovery groove 39 to the total amount Qin of the viscous fluid flowing from the storage area into the heat generating area.

Abstract: A vehicle heat generator, which can easily be installed in an engine room, includes a housing, and a heating chamber housed in the housing. The heating chamber contains viscous fluid. A heat transfer chamber is housed in the housing about the heating chamber. Circulating fluid flows through the heat transfer chamber. A rotor is rotatably supported in the heating chamber. The rotor shears the viscous fluid to generate heat. A flow passage of the circulating fluid is defined in the heat transfer chamber. The flow passage encompasses substantially the entire rotor. An ingoing passage connects the exterior of the housing to the flow passage. The circulating fluid flows through the ingoing passage from the exterior to the flow passage. An outgoing passage connects the flow passage to the exterior. The circulating fluid flows through the outgoing passage from the flow passage to the exterior. The ingoing passage and the outgoing passage extend substantially parallel to the rotor axis.