A compressor valve plate (80) for a reed valve (94) has a mounting surface portion for mounting a base portion (104) of a reed (100). The compressor has a port (90). A seat (150) surrounds the port. A trepan (154) surrounds the seat. A relieved area (180, 182) less deep than the trepan extends proximally (182) of and distally (180) of the trepan. A reciprocating piston compressor comprises a valve assembly having such a compressor valve plate and a reed.

A head assembly for a multi-cylinder compressor or pump having a first cylinder and a second cylinder includes a valve plate that has a first cylinder portion, a second cylinder portion, and a third portion positioned therebetween. The valve plate further including a valve plate face with a first aperture extending through the first cylinder portion and a second aperture extending through the second cylinder portion. The head assembly also includes a head cover having a head cover face, and at least one wall extending from one of the valve plate face and the head cover face to form a channel. The head cover being couplable to the valve plate such that the channel cooperates with the other of the valve plate face and the head cover face to form a chamber extending between and enclosing the first and second apertures of the valve plate.

Reciprocating-type compressor for refrigeration and/or conditioning and/or heat pump systems, comprisinga casing in which there is defined at least one compression section comprising at least one cylinder and a corresponding compression piston, a head provided on said casing, defining a delivery chamber immediately down-stream of said compression section, and adapted to receive the compressed fluid from said compression section, an intake zone from where the fluid to be compressed in the at least one cylinder of said compression section is introduced, a delivery tap at the operational outlet of said compression chamber, characterized in that it comprises a check valve placed between said operational outlet of said compression chamber and said delivery tap, adapted to prevent the return of fluid into the compression chamber from said delivery tap.

A cylinder head assembly for a compressor according to the present disclosure includes a valve plate and a cylinder head. The valve plate is configured to mount to a mounting surface of the compressor. The valve plate includes a suction chamber, a suction passage providing fluid communication between the suction chamber and a cylinder of the compressor, a suction valve seat through which the suction passage extends, and a discharge passage extending through the valve plate and defined by a discharge valve seat. The cylinder head at least partially covers the valve plate and defines a discharge chamber that is in selective fluid communication with the cylinder via the discharge passage. The cylinder head and the valve plate are formed together as a unitary body.

A rotating machine valve health monitor. Aspects of the valve monitor include instrumenting each valve of a reciprocating compressor, or other rotating machine, with a sensor capable of detecting at least vibration and instrumenting the crank shaft with a sensor capable of detecting at least rotation. A controller directly monitors the operation and condition of each valve to precisely identify any individual valve exhibiting leakage issues rather than only identifying the region of the leakage. The valve monitor uses a relatively high frequency stress wave analysis technique to provide a good signal-to-noise ratio to identify impact events indicative of leakage. The valve monitor uses circular waveforms of vibration data for individual valves to identify leakage by pattern recognition or visual identification. The valve monitor provides ongoing data collection to give warning of predicted valve failure and scheduling of preventative maintenance for failing valves.

A pumping device compresses fluid, provides a vacuum, or both compresses fluid and provides a vacuum. A pumping device may be used to force gas through a sieve bed, draw gas out of a sieve bed, or both force gas through a sieve bed and drawing gas out of a sieve bed. A pumping device may be operated at high speed to provide a high fluid flow rate with a small pumping device.

A rotating machine valve health monitor. Aspects of the valve monitor include instrumenting each valve of a reciprocating compressor, or other rotating machine, with a sensor capable of detecting at least vibration and instrumenting the crank shaft with a sensor capable of detecting at least rotation. A controller directly monitors the operation and condition of each valve to precisely identify any individual valve exhibiting leakage issues rather than only identifying the region of the leakage. The valve monitor uses a relatively high frequency stress wave analysis technique to provide a good signal-to-noise ratio to identify impact events indicative of leakage. The valve monitor uses circular waveforms of vibration data for individual valves to identify leakage by pattern recognition or visual identification. The valve monitor provides ongoing data collection to give warning of predicted valve failure and scheduling of preventative maintenance for failing valves.