F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
230/50, 137/61,
F04B 39/10 (2006.01) F16K 15/16 (2006.01)
Patent
CA 1250555
REED VALVE FOR REFRIGERATION COMPRESSOR ABSTRACT OF THE DISCLOSURE A suction valve for a small refrigeration com- pressor is in the form of a thin sheet metal reed having a sealing portion adapted to make sealing contact with a valve seat around the suction port on a valve plate. The valve reed is formed from a valve sheet by an outline defining cut so that the valve reed is integral with the sheet. The valve reed has a reduced width neck portion and in this neck portion the material is plastically deformed along a bend line so that in a normal unstressed condition the sealing portion of the reed is spaced away from the valve seat by a slight distance and as soon as the piston starts on the compression stroke the fluid pressure forces the sealing portion into sealing engage- ment to prevent back-flow through the suction port. When the piston starts the suction stroke, the biasing of the valve reed causes the sealing portion to move out of engagement with the valve seat before there is a substan- tial pressure differential across the suction valve. The compressor also has a reed-type discharge valve in which the valve head is normally inclined to the valve seat while making contact with the seat only at one point at the side of the valve head.
474857
Macrae & Co.
White Consolidated Industries Inc.
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