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:
An electromagnetic displacement control valve in a clutchless type variable displacement compressor is disclosed. The control valve includes a valve body, an electromagnetic driving device, a buffer spring, and an urging spring. The electromagnetic driving device drives the valve body toward a position for closing the valve hole. The buffer spring urges the valve body toward the position for closing the valve hole. The urging spring urges the valve body in a direction away from the position for closing the valve hole against an elastic urging force of the buffer spring. In a state where no current is supplied to the electromagnetic driving device, the valve body is capable of moving in a direction away from the position for closing the valve hole against the elastic urging force of the buffer spring.
摘要:
A displacement control valve (32) is connected to a variable displacement compressor. An open passage (53) in which a refrigerant gas flows is formed within a rod (31) and a valve body (30) of the displacement control valve (32). Further, an inner circumferential surface of a valve chamber (36) is formed as a guide portion (40) for moving the valve body (30) along an axis (L1) of the valve chamber (36). A valve portion (30a) of the valve body (30) is formed in a circular arc cross sectional shape along a surface of a sphere (K) in which an intermediate point (N) of a length of the guide portion (40) along the axis (L1) of the valve chamber (36) is set to a center on the axis (L1), and a distance from the intermediate point (N) to a contact point between a valve seat (36a) and the valve portion (30a) is set to a radius (r).