Hermetic rotary compressor with balancing weights

Details Hermetic rotary compressor with balancing weights Hermetic rotary compressor with balancing weights

1988-10-17

1990-04-10

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working fluid passage in inner working or reacting member

418 96, 418151, 418181, F04C 18356, F04C 2902

Patent

active

049155547

ABSTRACT:
A hermetic rotary compressor has a motor unit composed of a stator and a rotor which are arranged in an upper portion of a hermetic housing, an oil-lubricated compressor unit arranged in a lower portion of the hermetic housing, a crank shaft which interconnects said motor unit and said compressor unit, a discharging silencer which is formed by a lower bearing of the compressor unit positioned around the lower end of the crank shaft and a cover of the lower bearing. The hermetic rotary compressor further has a lower balancing weight mounted around a lower shaft end portion of the crank shaft which extends to a position below the discharging silencer and a weight cup surrounding the lower balancing weight. In this hermetic rotary compressor, the lower balancing weight is not disposed within the discharging silencer. Hence, even is the gas-liquid mixture of refrigerant is discharged from the discharging valve into the silencer chamber in the start-up or during liquid-back operation of the compressor, there is no risk that the lower balancing weight undesirably stirs such a fluid.

REFERENCES:
patent: 4710111 (1987-12-01), Kubo

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