摘要:
The disclosed variable-capacity compressor is provided with a capacity control valve (2) that can change the degree to which an air-supply passage (44, 46) is open between a valve seat (VS) and a valve body (VB), thereby changing the pressure in a crank chamber (9). The capacity control valve (2) is contained within a control-valve chamber (5c) in a rear housing (5) and fixed in place by means of a circlip (50). A notch (50g) is formed between the capacity control valve (2) and the circlip (50) and/or between the circlip (50) and the rear housing (5). A gap (C) formed by the notch (50g) and the like inhibits the transmission of vibrations caused by impacts between the valve seal (VS) and the valve body (VB). This makes the variable-capacity compressor quiet, reduces costs by obviating the need for a separate member, and results in excellent durability.
摘要:
A variable displacement swash-plate compressor includes an actuator that changes the inclination angle of a swash plate. The actuator includes a movable body that moves along a drive shaft axis. The movable body includes an acting portion that pushes the swash plate. The swash plate includes a receiving portion that contacts and is pushed by the acting portion. The acting portion and the receiving portion contact each other at an acting position. A bottom dead center associated part for positioning the piston at a bottom dead center is defined on the swash plate. When the drive shaft and the acting position are viewed from a direction that is perpendicular to a top dead center plane containing the top dead center associated part and the drive shaft axis, the acting position is defined at a position overlapping with the drive shaft regardless of the inclination angle.
摘要:
A variable displacement swash-plate compressor includes a housing in which a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore are formed, a drive shaft rotationally supported by the housing, a swash plate that is located in the swash plate chamber and rotated by rotation of the drive shaft, an actuator that changes the inclination angle of the swash plate, and a control mechanism that controls the actuator. A pressure regulation chamber is formed in the housing. The actuator includes a fixed body, a movable body that changes the inclination angle of the swash plate, and a control pressure chamber that moves the movable body. The control mechanism includes a control passage that connects together the discharge chamber, the pressure regulation chamber, and the control pressure chamber, and a control valve that, by adjusting the degree of opening of the control passage, changes the pressure in the control pressure chamber to allow the movable body to move. Refrigerant in the discharge chamber flows into the control pressure chamber via the pressure regulation chamber. The pressure regulation chamber functions as a muffler that reduces the pulsation of the refrigerant.
摘要:
A variable displacement swash-plate compressor includes an actuator that is configured to change the inclination angle of a swash plate. The actuator includes a movable body that moves along a drive shaft axis. The movable body includes an acting portion that is configured to push the swash plate with the pressure in a control pressure chamber. The swash plate includes a receiving portion that contacts and is pushed by the acting portion. The acting portion and the receiving portion contact each other at an acting position. A drive-shaft-parallel line segment is defined that contains the acting position and connects a proximal end of the acting portion and a proximal end of the receiving portion to each other, while extending in parallel with the drive shaft axis. The drive-shaft-parallel line segment is shorter when the inclination angle of the swash plate is maximized than when the inclination angle is minimized.
摘要:
A variable displacement compressor includes a housing assembly. A displacement control structure for the variable displacement compressor includes a passage forming member, a flat partition and a displacement control valve. The passage forming member is connected to an exterior surface of the housing assembly for forming a refrigerant passage for allowing the refrigerant to be discharged out from the compressor to an external refrigerant circuit. The flat partition is interposed between the passage forming member and the housing assembly. A throttle penetrates through the partition, which divides the refrigerant passage into an upstream passage and a downstream passage. The displacement control valve is provided in the passage forming member. The displacement control valve senses pressure of refrigerant in the upstream passage and pressure of the refrigerant in the downstream passage to control flow rate of the refrigerant flowing through a supply passage.
摘要:
A variable displacement swash-plate compressor includes an actuator (13) that is configured to change the inclination angle of a swash plate (5). The actuator (13) includes a movable body (13a) that moves along a drive shaft axis (O). The movable body (13a) includes an acting portion (14a) that is configured to push the swash plate (5) with the pressure in a control pressure chamber (13b). The swash plate (5) includes a receiving portion (5g) that contacts and is pushed by the acting portion (14a). The acting portion (14a) and the receiving portion (5g) contact each other at an acting position (F1). A bottom dead center associated part (U) for positioning the piston (9) at a bottom dead center is defined on the swash plate (5). When the inclination angle is minimized, the acting position (F1) is located at a position closer to the bottom dead center associated part (U) than the drive shaft axis (O).
摘要:
A variable displacement swash-plate compressor includes a housing in which a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore are formed, a drive shaft rotationally supported by the housing, a swash plate that is located in the swash plate chamber and rotated by rotation of the drive shaft, an actuator that changes the inclination angle of the swash plate, and a control mechanism that controls the actuator. A pressure regulation chamber is formed in the housing. The actuator includes a fixed body, a movable body that changes the inclination angle of the swash plate, and a control pressure chamber that moves the movable body. The control mechanism includes a control passage that connects together the discharge chamber, the pressure regulation chamber, and the control pressure chamber, and a control valve that, by adjusting the degree of opening of the control passage, changes the pressure in the control pressure chamber to allow the movable body to move. Refrigerant in the discharge chamber flows into the control pressure chamber via the pressure regulation chamber. The pressure regulation chamber functions as a muffler that reduces the pulsation of the refrigerant.