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US 2004/0164268 A1Published application
Compressor discharge valve retainer
AssigneeCopeland Corporation
InventorsRichard A. Obara, Saikrishnan S. Mattancheril, Kevin J. Gehret, Michael J. Monnin
Life of this patent
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Abstract
A discharge valve retainer is manufactured from powder metal using FLC4608, FL4405, FC0205 or FC0208 material. The finisher retainer has a density of approximately 6.8 to 7.6 gm/cc. The retainer is carbonitrided, quenched and tempered to achieve a surface hardness of Rockwell 15N 89-93. The exterior of the retainer is contoured to provide for the non-turbulent flow of pressurized gas around the discharge valve.
Claims12
A discharge valve assembly for a compressor, said discharge valve assembly comprising
- a valve plate assembly defining a discharge valve seat;
- a discharge valve member movable between a closed position where said discharge valve member engages said discharge valve seat and an open position where said discharge valve member is spaced from said discharge valve seat;
- a biasing member urging said discharge valve member into its closed position;
- a retainer attached to said valve plate assembly overlying said discharge valve member to limit opening movement of said discharge valve member, said retainer comprising:
- a circular central body defining a recess extending into a bottom surface of said central body within which said discharge valve member and said biasing member are disposed;
- a pair of flanges extending radially outwardly from said circular central body, each of said pair of flanges defining a bore for attaching said retainer to said valve plate assembly;
- and
- an annular recess extending into a top surface of said central body, said annular recess defining a more consistent wall thickness for said retainer.
5 more elements
Dependencies are inferred from the claim text.