摘要:
A compressor has a compression chamber formed in a cylinder block, a suction passage formed upstream of the compression chamber and a suction throttle valve formed in the suction passage for adjusting opening of the suction passage. The suction throttle valve has a valve hole and a valve seat formed around the valve hole, a valve body for opening and closing the valve hole and an urging member for urging the valve body in the direction which causes the valve hole to be closed. The urging member is a disk spring. The spring characteristics of the disk spring includes a range where the increasing rate of the load required for displacement of the disk spring is reduced with an increase of displacement of the disk spring. The displacement range of the valve body includes a range where the increasing rate of the load of the disk spring is reduced with an increase of the displacement of the disk spring.
摘要:
A swash plate compressor that prevents a slide plate from being separated from a swash plate. The compressor includes a drive shaft. A slide plate is rotatable relative to the swash plate. Two shoes is arranged on the swash plate and the slide plate. A bearing arranged between the swash plate and the slide plate and in between the shoes. A piston is connected to the swash plate and the slide plate by the shoes and is reciprocated to compress gas. The swash plate includes a swash plate support surface, and the slide plate includes a slide plate support surface, in which each surface is for contacting the bearing. The swash plate is formed so that a clearance between the swash plate support surface and the slide plate support surface increases radially inwardly of the swash plate and the slide plate.
摘要:
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.
摘要:
In a swash plate type compressor, refrigerant in a discharge pressure region is introduced into a crank chamber through a supply passage while the refrigerant in the crank chamber is drawn out to a suction pressure region through a bleed passage for controlling pressure in the crank chamber, whereby inclination angle of a swash plate is changed. A heat-generating sliding portion is provided in the crank chamber. The supply passage includes a communication port that communicates with the crank chamber and a first throttle portion for throttling the refrigerant. At least parts of the supply passage and the bleed passage are formed in a drive shaft. A part of the bleed passage formed in the drive shaft is located between a part of the supply passage formed in the drive shaft and an outer peripheral surface of the drive shaft.
摘要:
A rotor is fixed to a drive shaft supported by a housing. A swash plate is supported slidably and tiltably by the drive shaft. A hinge mechanism is provided between the rotor and swash plate. The hinge mechanism comprises two rotor-side protrusions provided in the rotor and a protruding portion provided in the swash plate. The protruding portion is inserted between side faces in which the two rotor-side protrusions face each other, and perform power transfer between the rotor and swash plate by two-dimensionally abutting against a side face of one of the rotor-side protrusions. A concavity is provided in the side face of the rotor-side protrusion. Therefore, an area of the side face of the rotor-side protrusion abutting on the side face of the swash-plate-side protrusion decreases, and smooth change of discharge volume is achieved while controlling processing cost.
摘要:
A compressor comprises a drive shaft supported in a housing, a piston accommodated in a cylinder bore and connected to the drive plate, a valve plate for separating the cylinder bore from the suction chamber and the discharge chamber. A discharge passage passes through the housing and the valve plate to connect the discharge chamber to the external circuit. Gas is sent from the discharge chamber to the external circuit through the discharge passage. A check valve is located on the valve plate to selectively open and close the discharge passage. The check valve checks gas flow from the external circuit to the discharge chamber. This prevents the pressure in the crank chamber from increasing to an excessive degree.
摘要:
The present invention relates to a structure for separating oil from a refrigerant gas containing the oil. The refrigerant gas is discharged from a refrigerant compressor which forms a part of refrigerating cycle to an external refrigerant circuit. The oil separation structure includes a separation chamber in which the oil is separated from the discharge refrigerant gas having a cylindrical inner surface, and a plurality of introduction passages through which the discharge refrigerant gas is introduced into the separation chamber. The oil is separated by centrifugal action from the discharge refrigerant gas by turning the discharge refrigerant gas introduced into the separation chamber along the cylindrical inner surface.
摘要:
In a swash plate type compressor, refrigerant in a discharge pressure region is introduced into a crank chamber through a supply passage while the refrigerant in the crank chamber is drawn out to a suction pressure region through a bleed passage for controlling pressure in the crank chamber, whereby inclination angle of a swash plate is changed. A heat-generating sliding portion is provided in the crank chamber. The supply passage includes a communication port that communicates with the crank chamber and a first throttle portion for throttling the refrigerant. At least parts of the supply passage and the bleed passage are formed in a drive shaft. A part of the bleed passage formed in the drive shaft is located between a part of the supply passage formed in the drive shaft and an outer peripheral surface of the drive shaft.
摘要:
The check valve includes a valve housing, a valve body and an urging member. The valve housing has a peripheral wall and a valve seat. The peripheral wall has an opening therethrough for fluid communication. The opening is located more downstream than the valve seat. The end of the opening on the side of the valve seat is spaced at a predetermined length in a direction in which the valve body is spaced away from the valve seat. A first throttle is formed in a space between an inner peripheral surface of the valve housing and an outer peripheral surface of the valve body until the valve body is slid in the direction for the predetermined length from the state in which the valve body is seated on the valve seat.
摘要:
A compressor that generates relatively little noise and prevents partial clutch engagement and gas leakage when the inclination of a cam plate is suddenly decreased by a great amount. The compressor includes a control valve that electrically controls the compressor displacement based on external information. The rear end of a drive shaft is supported by a shaft bore formed in a cylinder block. A stopper is located endwise of the drive shaft to limit axial movement of the drive shaft. The stopper may be very stiff spring or a rigid member.