Oiless rotary scroll air compressor air inlet valve

Details Oiless rotary scroll air compressor air inlet valve Oiless rotary scroll air compressor air inlet valve

F - Mech Eng,Light,Heat,Weapons

01

C

F01C 17/06 (2006.01) F04C 18/02 (2006.01) F04C 29/02 (2006.01)

Patent

CA 2325085

An air inlet valve assembly for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements which are intermeshed and nested to form at least one spiraling compression pocket therebetween, a drive mechanism drives the orbiting scroll element in an orbit about the stationary scroll element, and an anti-rotation bearing device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element. The air inlet valve assembly supplies an uncompressed gas (e. g., ambient air) to the compression apparatus and prevents backward rotation of the orbiting scroll element when power to the drive mechanism is terminated. The air inlet valve assembly includes a valve piston positioned within an air intake channel leading to the suction region of the rotary scroll compressor, the valve piston having a first position blocking the air intake channel and a second position unblocking the air intake channel. A valve stem member is connected to a valve housing, the valve housing enclosed a valve cavity wherein the valve piston is located, the valve piston coacts with a valve seat formed on the valve housing, and stop surfaces are provided on the valve piston and the valve stem to limit movement of the valve piston toward the suction region of the rotary scroll compressor.

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