Variable compression system for controlling slant angle of slant plate

Abstract

A variable compression system for controlling a slant angle of a slant plate may include a rotation plate, the slant plate coupled to one side of the rotation plate, a compression piston connected to an edge of the slant plate, a slant control shaft connected to a center of the slant plate with a variable pin arranged to rotate with the slant plate for pushing or pulling the slant plate by a hydraulic pressure being supplied thereto to control the slant angle of the slant plate, a position guiding shaft arranged passed through a center portion of the slant control shaft, a position detecting sensor engaged to the position guiding shaft for detecting a position of the position guiding shaft, and a control unit for determining the slant angle of the slant plate with reference to a signal from the position detecting sensor.

What is claimed is: 
     
         1 . A variable compression system for controlling a slant angle of a slant plate comprising:
 a rotation plate arranged to rotate with reference to a rotation axis;   the slant plate coupled to one side of the rotation plate with a hinge arranged to rotate with the rotation plate;   a compression piston connected to an edge of the slant plate arranged to reciprocate along the rotation axis by rotation of the slant plate;   a slant control shaft connected to a center of the slant plate with a variable pin arranged to rotate with the slant plate for pushing or pulling the slant plate by a hydraulic pressure being supplied thereto to control the slant angle of the slant plate;   a position guiding shaft arranged passed through a center portion of the slant control shaft for moving according to movement of the slant control shaft;   a position detecting sensor engaged to the position guiding shaft for detecting a position of the position guiding shaft; and   a control unit for determining the slant angle of the slant plate with reference to a signal from the position detecting sensor.   
     
     
         2 . The variable compression system of  claim 1 , wherein the control unit controls to vary a compression capacity of the compression piston which compresses a refrigerant with the slant angle of the slant plate. 
     
     
         3 . The variable compression system of  claim 1 , wherein the position guiding shaft is connected to the variable pin to rotate with the slant plate. 
     
     
         4 . The variable compression system of  claim 1 , wherein the position guiding shaft is arranged to rotate at the slant control shaft and to move with the slant control shaft in a length direction of the slant control shaft. 
     
     
         5 . The variable compression system of  claim 4 , further comprising:
 a securing flange formed on one side of the position guiding shaft, and   a securing cap fastened to an end portion of the slant control shaft rotatably passed through the position guiding shaft for fastening the securing flange to the slant control shaft in a length direction thereof.   
     
     
         6 . The variable compression system of  claim 5 , wherein a valve is mounted to an outer circumference of the securing cap. 
     
     
         7 . The variable compression system of  claim 1 , wherein the position detecting sensor is a contact sensor which is in contact with the position guiding shaft. 
     
     
         8 . The variable compression system of  claim 7 , wherein the position detecting sensor has a guide groove for guiding movement of the position guiding shaft, the guide groove being matched with an outside circumference of the position guiding shaft.