摘要:
Refrigerant gas is introduced into a suction chamber through a suction line. Refrigerant gas is allowed to flow from the crank chamber into the suction chamber through an outlet line. An open degree adjustment valve (34) has a first valve body for adjusting an open degree of the suction line and a second valve body for adjusting an open degree of the outlet line. The first valve body and the second valve body are connected to each other. The first valve body moves in such a manner as to increase the open degree of the suction line when the difference between the pressure in the suction chamber and the pressure in the crank chamber decreases, and reduce the open degree of the suction line when the difference between the pressure in the suction chamber and the pressure in the crank chamber increases. Thus, variation of gas pressure is reliably suppressed while maintaining favorable starting performance of the compressor.
摘要:
A fluid machine is served as an expansion device and a compression device. The fluid machine compresses gas in an operation chamber upon functioning as the compression device. The fluid machine expands the gas in the operation chamber upon functioning as the expansion device. The fluid machine includes a movable discharge valve served as a differential pressure regulating valve that discharges the gas from the operation chamber when the fluid machine functions as the compression device. The discharge valve is moved to a non-operation position where the discharge valve fails to function as the differential pressure regulating valve when the fluid machine functions as the expansion device.
摘要:
Refrigerant gas is introduced into a suction chamber through a suction line. Refrigerant gas is allowed to flow from the crank chamber into the suction chamber through an outlet line. An open degree adjustment valve (34) has a first valve body for adjusting an open degree of the suction line and a second valve body for adjusting an open degree of the outlet line. The first valve body and the second valve body are connected to each other. The first valve body moves in such a manner as to increase the open degree of the suction line when the difference between the pressure in the suction chamber and the pressure in the crank chamber decreases, and reduce the open degree of the suction line when the difference between the pressure in the suction chamber and the pressure in the crank chamber increases. Thus, variation of gas pressure is reliably suppressed while maintaining favorable starting performance of the compressor.
摘要:
A fluid machine is served as an expansion device and a compression device. The fluid machine compresses gas in an operation chamber upon functioning as the compression device. The fluid machine expands the gas in the operation chamber upon functioning as the expansion device. The fluid machine includes a movable discharge valve served as a differential pressure regulating valve that discharges the gas from the operation chamber when the fluid machine functions as the compression device. The discharge valve is moved to a non-operation position where the discharge valve fails to function as the differential pressure regulating valve when the fluid machine functions as the expansion device.
摘要:
A compressor includes a housing, a rotary shaft, a pulley, an electric motor, a pulley one-way clutch, and a motor one-way clutch. The shaft is rotatably supported by the housing. The pulley is operably connected to the shaft and includes a power transmission portion. When power is transmitted from a vehicular engine to the power transmission portion, the pulley is rotated. The electric motor rotates the shaft and includes a rotor, which is operably connected to the shaft. At least part of the electric motor overlaps the power transmission portion in the axial direction of the shaft. The pulley one-way clutch is located between the pulley and the shaft and selectively permits and prevents power transmission between the pulley and the shaft. The motor one-way clutch is located between the rotor and the shaft and selectively permits and prevents power transmission between the rotor and the shaft.
摘要:
A swash plate type variable displacement compressor includes a housing, a drive shaft, a piston, a lug plate, a swash plate, a hinge mechanism provided between the lug plate and the swash plate, and a control mechanism. The hinge mechanism includes a restraining hinge element that is located on a suction side with respect to a first imaginary plane that includes a top position of the swash plate corresponding to the top dead center position of the piston and the axis of the drive shaft for restraining the lug plate and the swash plate from rotating relative to each other and the swash plate to move away from the lug plate. The hinge mechanism further includes a non-restraining hinge element that is located on a discharge side with respect to the first imaginary plane for not restraining the swash plate from moving away from the lug plate.
摘要:
Each suction port 43 of a cylinder block 11 has a narrow passage 50 located at a top dead center side and a wide passage 51 located at a bottom dead center side. A suction communication passage 45 of a rotary valve 41 passes by a first succeeding end 50b of the narrow passage 50 before passing by a second succeeding end 51b of the wide passage 51. A high-pressure groove 47 of a residual gas bypass groove 46 faces only a narrow passage 50 of a suction port 43A that corresponds to a high-pressure side compression chamber 26 when in communication with the suction port 43A. A width Tc between the first succeeding end 50b and a second preceding end 51a of the wide passage 51 in the rotation direction of the rotary valve 41 is smaller than a seal width W of a seal region S between the high-pressure groove 47 and the outlet 45b of the suction communication passage 45. This reduces the suction loss amount of gas in each compression chamber and improves the compression efficiency while advancing the timing at which the suction of gas into the compression chamber starts.
摘要:
A variable speed compressor has a housing, a compression mechanism and a variable speed mechanism including input and output shafts and a carrier each rotatable around a first axis, planetary cones received by the carrier and each rotatable around a respective second axis inclining to the first axis, and a control ring coaxial with the first axis to vary the speed of rotation of the planetary cones to move along the first axis. The rotating speed of the input shaft is controllably transmittable to the output shaft by transmitting torque thereof to the output shaft so that the input and output shafts and the control ring contact the planetary cones. The control ring having a cylindrical shape has first and second pressure sensing surfaces coaxial with the first axis, formed on the opposite side thereof, sensing pressure applied to the sensing surfaces for movement.
摘要:
A hybrid compressor system has a hybrid compressor for compressing refrigerant. The compressor is selectively driven by one of a first drive source and a second drive source. The hybrid compressor system also includes a first one-way clutch, a driver for driving the second drive source, a sensor for detecting a rotational state of the first drive source and a controller. The first one-way clutch is arranged on a first power transmission path between the compressor and the first drive source for permitting power transmission from the first drive source to the compressor. The controller is electrically connected to the driver and the sensor. When a drive source of the compressor is switched from the second drive source to the first drive source, the controller orders the driver to stop the second drive source after the rotation of the first drive source is detected.