Displacement control valve of a variable displacement swash plate

Abstract

A displacement control valve of a variable displacement swash plate compressor comprises a valve body provided with a valve shaft, a driver for applying driving force to the valve body, a tube-shaped valve chest accommodating the valve body to be capable of reciprocal movement and provided with a valve shaft inserting hole through which the valve shaft of the valve body is passed slidably at one end wall, an inlet hole at a circumferential wall and a valve hole which is opened and closed by the valve body at the other end. The inlet hole communicates with an outlet chamber of the compressor and the valve hole communicates with a crank chamber of the compressor. The inlet hole is directed at right angle to and disposed offset in the radial direction from the central axis of the valve chest.

1 . A displacement control valve of a variable displacement swash plate compressor comprising a valve body provided with a valve shaft, a driver for applying driving force to the valve body, a tube-shaped valve chest accommodating the valve body to be capable of reciprocal movement and provided with a valve shaft inserting hole through which the valve shaft of the valve body is passed slidably at one end wall, an inlet hole at circumferential wall and a valve hole which is opened and closed by the valve body at the other end wall, wherein the inlet hole communicates with an outlet chamber of the compressor and the valve hole communicates with a crank chamber of the compressor, and wherein the inlet hole is directed at right angle to and located radially offset from the central axis of the valve chest.  
   
   
       2 . A displacement control valve of a variable displacement swash plate compressor of  claim 1 , wherein the valve chest is provided with a plurality of inlet holes circumferentially distanced from each other.  
   
   
       3 . A displacement control valve of a variable displacement swash plate compressor of  claim 1 , wherein the inlet hole is directed tangentially to the circumferential wall of the valve chest.  
   
   
       4 . A displacement control valve of a variable displacement swash plate compressor of  claim 1 , wherein the valve chest has a cylindrical shape.  
   
   
       5 . A displacement control valve of a variable displacement swash plate compressor of  claim 1 , wherein the valve chest has a truncated-cone-shape convex toward the other end wall.  
   
   
       6 . A displacement control valve of a variable displacement swash plate compressor of  claim 1 , wherein a tube member surrounding the valve shaft inserting hole extends from the one end wall of the valve chest toward the other end wall of the valve chest beyond the inlet hole.