Capacity modulation system for compressor and method
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United States of America Patent
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Apr 17, 2012
Grant Date -
Jan 29, 2009
app pub date -
Jul 22, 2008
filing date -
Jul 23, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus is provided and may include a compression mechanism, a valve plate associated with the compression mechanism and having at least one port in fluid communication with the compression mechanism, and a manifold disposed adjacent to the valve plate. A cylinder may be formed in the manifold and a piston may be disposed within the manifold and may be movable relative to the manifold between a first position separated from the valve plate and a second position engaging the valve plate. A valve element may be disposed within the piston and may be movable relative to the piston and the manifold. The valve element may be movable between an open position spaced apart from the valve plate and permitting flow through the port and into the compression mechanism and a closed position engaging the valve plate and restricting flow through the port and into the compression mechanism.
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