Refrigeration compressor having a spherical discharge valve
AssigneeWhite Consolidated Industries, Inc.
InventorDelmar R. Riffe
Life of this patent
Estimating the term…
Abstract
A small single cylinder hermetic refrigeration compressor has a flat valve plate extending across the end of the cylinder. A discharge port is formed in the valve plate with a spherical valve seat and a spherical poppet member is moveable to and from the valve seat. A flat leaf spring and valve stop member fit over the poppet to control its motion and the spherical head of the popper, when closed, extends beyond the surface of the valve plate in alignment with a mating recess on the piston head to minimize the clearance space of the compressor.
Claims15
A discharge valve assembly for a refrigeration compressor comprising a valve plate having an inner face exposed to a compression space and an outer face exposed to a discharge space, said valve plate having a discharge port extending therethrough between said inner and outer faces, a valve seat surrounding said port on said outer face, said valve seat having a spherical surface, a valve poppet having a base portion with a flat surface facing away from said valve seat and a spherical head portion facing said valve seat, said valve seat and said head portion having the same radius of curvature so that said head portion makes surface abutting sealing contact with said valve seat in the closed position, said head portion spherical surface having a diameter greater than the diameter of said valve seat, a valve stop member extending over said valve poppet a spaced distance from said base portion, and a flat leaf spring engaging said poppet flat surface biasing said poppet toward said valve seat.
A hermetic refrigeration compressor comprising a cylinder block having an end surface, a cylinder bore extending through said cylinder block from said end surface and defining an axis perpendicular to said end surface, a valve plate secured to said end surface and extending across said cylinder bore, a piston mounted for reciprocation in said cylinder bore, means to reciprocate said piston in said cylinder bore to and from said valve plate, a discharge port extending through said valve plate and opening into said cylinder bore, a valve seat surrounding said discharge port on the side opposite said piston, said valve seat having a spherical surface, a valve poppet having a head having a spherical surface engageable with said valve seat, spring means biasing said poppet toward said valve seat, said poppet when in engagement with said valve seat having a central portion extending through said valve seat beyond a surface of said valve plate facing said piston, said piston having an end face extending adjacent said valve plate, said end face including a recessed portion in alignment with said discharge port to receive said central portion of said poppet.
Dependencies are inferred from the claim text.