Abstract: A reciprocating compressor including cylinder block with a plurality of cylinder bores. A piston is positioned in each bore and mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head, which includes bores corresponding to the bores in the cylinder block, and a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate. Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.

Abstract: Suction gas feed assemblies to provide gas to a hermetic compressor are provided. The feed assemblies have capacity for reducing suction noise resulting from suction conduit vibration, valving operation, suction gas pulsing, or the like. The suction gas feed assemblies include a suction plenum in the form of a substantially cylindrical end cap or motor cap having substantially straight side wall, a contoured top wall, and a gas inlet aperture and suction conduit aperture which are configured to provide strong suction and motor cooling, with reduced superheat, suction pulsation, and noise attenuation. The motor cap has excellent structural stiffness and low sound radiation.

Abstract: A hermetic compressor unit housing comprised of a shell having a top section and a bottom section which receives the top section, the shell being formed of sheet metal and having generally cylindrical sidewalls wherein the sidewall taken in a generally axial direction is substantially straight, each shell section having an opening, a substantially cylindrical portion, and a closed end portion, the opening having a substantially circular horizontal cross-sectional geometry defined by a major axis and a minor axis, the horizontal cross-sectional geometry including substantially liner opposing sidewall portions preferably disposed adjacent to the intersection of the horizontal sectional geometry with the minor axis, and methods of aligning the shell sections for installation of fixtures and mating of the shell sections.

Abstract: A muffler system for a compressor includes an expansion chamber muffler for attenuating sound pressure pulses and an acoustic muffler for filtering high-frequency pressure pulsations. The acoustic muffler is connected inline along the discharge side of the compressor between the discharge port of the cylinder head and a discharge tube in fluid communication with the outlet port of the compressor housing. A conduit is in fluid communication between the outlet port of the compressor housing and the condenser to supply the flow of refrigerant therebetween. Interposed adjacent the compressor housing, but exterior to the compressor housing is an expansion chamber muffler in fluid communication with the conduit for further attenuating pressure pulses generated by operation of the compressor.

Abstract: A die cast aluminum piston for a reciprocating compressor. The piston is cast with no coring and thus includes no aperture in the as-cast piston for a wrist pin. The aperture for the wrist pin is subsequently formed in the wrist pin in a preselected location after casting. The wrist pin is formed of a preselected diameter. Because the wrist pin can be placed in a preselected location with a preselected diameter, the same cast piston design can be used in a plurality of applications by varying the location of the aperture or the size of the aperture, or both.

Abstract: A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head which includes bores corresponding to the bores in the cylinder block. The cylinder head includes a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum in the cylinder head. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.

Abstract: A muffler system for a compressor includes an expansion chamber muffler for attenuating sound pressure pulses and an acoustic muffler for filtering high-frequency pressure pulsations. The acoustic muffler is connected inline along the discharge side of the compressor between the discharge port of the cylinder head and a discharge tube in fluid communication with the outlet port of the compressor housing. A conduit is in fluid communication between the outlet port of the compressor housing and the condenser to supply the flow of refrigerant therebetween. Interposed adjacent the compressor housing, but exterior to the compressor housing is an expansion chamber muffler in fluid communication with the conduit for further attenuating pressure pulses generated by operation of the compressor.

Abstract: A reciprocating compressor that includes a cylinder block with a plurality of cylinder bores. A piston is positioned in each bore. Each piston is mounted to move in response to the a crankshaft, causing each piston to reciprocate within the cylinder bore. The compressor further includes a cylinder head which includes bores corresponding to the bores in the cylinder block. The cylinder head includes a suction port in fluid communication with a source of compressible gas and a plurality of suction plenum in the cylinder head. Protrusions or ribs extend into the suction plenum. The cylinder head also includes a discharge plenum in communication with the outlet ports of the valve plate Interposed between the cylinder head and the cylinder block is a valve plate assembly having a discharge valve, and a discharge valve retainer having a pair of radii assembled to the valve plate by snap fitting a cylinder head gasket over the discharge valve and retainer.

Abstract: A muffler for use in a refrigerant compressor which includes a muffler housing, an intake tube at one end of the muffler housing for receiving a flow of refrigerant fluid, and an exhaust tube at another end opposed of the muffler housing to exhaust the flow of refrigerant fluid. The muffler housing is adapted to structurally carry a pressure relief member therein. The pressure relief member is in fluid communication with the intake tube. A discharge tube is connected to the exhaust tube for transporting the flow of refrigerant fluid from the exhaust tube to a compressor discharge port for discharging the refrigerant fluid from the compressor.

Abstract: Suction gas feed assemblies to provide gas to a hermetic compressor are provided. The feed assemblies have capacity for reducing suction noise resulting from suction conduit vibration, valving operation, suction gas pulsing, or the like. The suction gas feed assemblies include a suction plenum in the form of a substantially cylindrical end cap or motor cap having substantially straight side wall, a contoured top wall, and a gas inlet aperture and suction conduit aperture which are configured to provide strong suction and motor cooling, with reduced superheat, suction pulsation, and noise attenuation. The motor cap has excellent structural stiffness and low sound radiation.

Abstract: A hermetic compressor unit housing comprised of a shell having a top section and a bottom section which receives the top section, the shell being formed of sheet metal and having generally cylindrical sidewalls wherein the sidewall taken in a generally axial direction is substantially straight, each shell section having an opening, a substantially cylindrical portion, and a closed end portion, the opening having a substantially circular horizontal cross-sectional geometry defined by a major axis and a minor axis, the horizontal cross-sectional geometry including substantially liner opposing sidewall portions preferably disposed adjacent to the intersection of the horizontal sectional geometry with the minor axis, and methods of aligning the shell sections for installation of fixtures and mating of the shell sections.

Abstract: A die cast aluminum piston for a reciprocating compressor. The piston is cast with no coring and thus includes no aperture in the as-cast piston for a wrist pin. The aperture for the wrist pin is subsequently formed in the wrist pin in a preselected location after casting. The wrist pin is formed of a preselected diameter. Because the wrist pin can be placed in a preselected location with a preselected diameter, the same cast piston design can be used in a plurality of applications by varying the location of the aperture or the size of the aperture, or both.