Control cylinder device in variable displacement compressor

Details Control cylinder device in variable displacement compressor Control cylinder device in variable displacement compressor

F - Mech Eng,Light,Heat,Weapons

04

B

230/77

F04B 1/28 (2006.01) F04B 27/18 (2006.01)

Patent

CA 1332594

ABSTRACT OF THE DISCLOSURE In control cylinder device in a variable displacement compressor, an annular cylinder concentric with the driving rotary shaft is provided in a housing of a compressor body, and annular control piston is slideably fitted in the cylinder to define a control pressure chamber within the cylinder. The annular control piston is connected to the sleeve, so that the sliding movement of the sleeve can be controlled by the operation of the control piston. Further, inner and outer seal rings are interposed in an axially misaligned relation to each other between inner and outer slide surfaces of the cylinder and control piston. This eliminates a high machining accuracy of the inner and outer surfaces of the cylinder in the cylinder device on which the control piston slides. Also, this easily insures sealing properties required between the slide surfaces of the cylinder and the piston. In addition, it is possible to effectively prevent the inclination of the control piston within the cylinder.

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