Control valve for variable capacity vane compressor

Details Control valve for variable capacity vane compressor Control valve for variable capacity vane compressor

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 1/22 (2006.01) F04B 49/02 (2006.01) F04C 18/344 (2006.01)

Patent

CA 2132172

A control valve for a variable rotary vane compressor is modular. The control operates an actuator to vary the position of a rotary valve plate located between the intake chamber and the compression chamber. The control valve locates in a cavity which has a suction pressure portion, a control pressure portion, and a discharge pressure portion. The control valve has an end cap and a valve seat member connected together by a sleeve. A valve element engages a seat in the valve seat member. The spring and a bias pin urge the valve element to the closed position. A bellows located within the sleeve has a stem that contacts the valve element to move it off of the seat. The sleeve allows the distance between the valve seat member and the end cap to be varied to preset the bellows prior to installation in the compressor.

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