摘要:
A discharge muffler construction having a casing which defines a noise attenuation cavity and which is provided with an inlet and outlet located at substantially opposite portions thereof and communicating with the cavity, a baffle plate in the cavity intermediate the inlet and outlet and partitioning the same into at least two chambers, the baffle plate having an arcuate surface concave to the inlet, an aperture through the baffle plate, and a tubular conduit mounted through the aperture and placing the chambers in fluid communication.
摘要:
A compressor unit having a housing consisting of steel inner and outer shells, the shells being spaced apart from each other to provide an attenuation cell substantially occupying all of the space between the shells, a suction gas inlet and a discharge gas outlet extending through both of the shells and the cell and being isolated from the outer shell by sound absorbing means, and spacer material having sound absorbing properties positioned between the shells and maintaining the spacing therebetween, the spacing being, preferably, at least about 0.06 in. in width over at least a major portion of the cell.
摘要:
A shell for a hermetic compressor unit, the shell having a top section or dome, and a bottom section, the dome having a unique shape which gives enhanced capacity for absorbing and attenuating structural and fluid transmitted wave energies emanating from the unit at wave frequencies of between 1,000 Hz and 2,000 Hz, while reducing total operating noise of the unit, the dome being formed of sheet metal and having a generally inverted cup-shaped configuration with generally cylindrical sidewalls and a top wall having a central portion surrounded by a peripheral portion, wherein the sidewall taken in a generally axial direction is substantially straight, wherein the central portion of the top constitutes from about 40 to about 90% of the total area of the top and has a generally hemispherical configuration on a mean radius of from about 6.5 to about 10.0 inches as measured from an origin point O.sub.2, and wherein the lower section of said shell has a generally cylindrical sidewall and an outwardly curved bottom wall of a generally hemispherical configuration, the ratio of the radius of curvature of the bottom wall to the diameter of the sidewall being from about 0.4 to about 2.0.
摘要:
A bearing cap for the gas compressor of a compressor unit in which oil is normally entrained with the refrigerant gas and recirculated therewith, the cap being adapted for mounting on the compressor block in substantial axial alignment with a crankshaft mounted therein, the cap body having a cavity therein formed by a wall providing both axial and lateral shoulders or bearings for containing the sump end portion of the crankshaft, a shelf on the body extending generally laterally outwardly therefrom and having a face oriented generally transverse to the axis of the cavity, pockets formed in the face and adapted to catch and retain sediment, and one or more ports extending from the face through the shelf and adapted to drain oil from the crankcase to the sump of a compressor unit.
摘要:
A heat exchanger including a plurality of thermally-conductive, fluid-conveyance tubes, and at least one header from which each of the plurality of fluid-conveyance tubes extends. The header includes an elongate outer tube and an elongate inner tube disposed eccentrically within the outer tube, with a fluid conduit being defined between the inner tube and the outer tube. The plurality of fluid-conveyance tubes are in fluid communication with the conduit.
摘要:
A compressor assembly including a housing, a motor and a compression mechanism disposed within the housing, the compression mechanism driven by the motor. A pulsating discharge fluid flow emanates from the compression mechanism through a first conduit; the first conduit having an outlet which is open to a discharge muffler chamber. A standing pressure waveform is established by the first pulsating discharge fluid flow within the discharge muffler chamber. A second conduit is provided which has an inlet which is open to the discharge muffler chamber and disposed outside the standing pressure waveform therein, and an outlet through which discharge fluid exits, whereby the magnitude of the discharge pulse transmitted by the discharge fluid is attenuated. The present invention also provides a compressor assembly including a compression mechanism and a discharge muffler chamber having a substantially hemispherical inner surface and a central axis. First and second conduits are in fluid communication through the discharge muffler chamber, the openings of the first and second conduits within said discharge muffler chamber are directed substantially towards the central axis and oriented at approximately a right angle relative to each other therealong. A discharge fluid flow is received in the discharge muffler chamber from the compression mechanism via the first conduit. The discharge fluid flow contains pressure pulses of a first magnitude. The discharge fluid flow is exhausted from the discharge muffler chamber via the second conduit, the discharge fluid flow exhausted from the discharge muffler containing pressure pulses of a second magnitude less than the first magnitude.
摘要:
A suction gas feed assembly for a gas compressor unit having a shell, an electric motor driven dual piston compressor mounted therein having dual suction ports, one end of the motor being interconnected with and adjacent the compressor, the other end of the motor being substantially unencumbered, the feed assembly consisting of an end cap having a circumferential side wall and a top wall and adapted to be mounted within the shell with the side wall in substantial sealing contact with the unencumbered end of the motor to provide a suction plenum substantially containing the unencumbered end, dual suction conduits each having one of its ends mounted in an aperture in the side wall of the end cap, the apertures being spaced apart on the side wall a distance of at least about one eighth the total circumferential dimension of the side wall, the other ends of the conduits adapted to be mounted in communication with the suction porting of the compressor, intermediate portions of each of the conduits lying in contiguous relationship, a housing surrounding the intermediate portions and spaced therefrom to provide a substantially closed attenuator cell containing the intermediate portions, and gas passages in each of the intermediate portions placing each of the conduits in fluid communication with the cell.
摘要:
A valve plate for a motor compressor has a continuously smooth figure-eight shaped port for reducing stresses along the primary longitudinal axis of a reed valve associated with the port, and an arrangement for providing a mechanical interlock for a head gasket to inhibit pressure loss between adjacent compressor cylinders.
摘要:
A reciprocating piston compressor having a suction muffler and a pair of discharge mufflers to attenuate noise created by the primary pumping frequency in the primary pumping pulse. The suction muffler is disposed along a suction tube extending between the motor cap and the cylinder head of the compressor. The discharge mufflers are positioned in series within the compressor to receive discharge gases from the compression mechanism and are spaced one quarter of a wavelength from each other so as to sequentially diminish the problematic or noisy frequencies created during compressor operation. The motor/compressor assembly including the motor and compression mechanism is mounted to the interior surface of the compressor housing by spring mounts. These mounted are secured to the housing to define the position of the nodes and anti-nodes of the frequency created in the housing to reduce noise produced by natural frequencies during compressor operation.
摘要:
A reciprocating piston compressor having a suction muffler and a pair of discharge mufflers to attenuate noise created by the primary pumping frequency in the primary pumping pulse. The suction muffler is disposed along a suction tube extending between the motor cap and the cylinder head of the compressor. The discharge mufflers are positioned in series within the compressor to receive discharge gases from the compression mechanism and are spaced one quarter of a wavelength from each other so as to sequentially diminish the problematic or noisy frequencies created during compressor operation. The motor/compressor assembly including the motor and compression mechanism is mounted to the interior surface of the compressor housing by spring mounts. These mounted are secured to the housing to define the position of the nodes and anti-nodes of the frequency created in the housing to reduce noise produced by natural frequencies during compressor operation.