Oil cooled, hermetic refrigerant compressor

Details Oil cooled, hermetic refrigerant compressor Oil cooled, hermetic refrigerant compressor

1982-12-09

1985-05-14

Gluck, Richard E.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417372, 417902, 62469, 62505, F04B 3906, F25B 4302

Patent

active

045169160

ABSTRACT:
A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler 18 and is then delivered through the shell to the top of the motor rotor 24 where most of it is flung radially outwardly within the confined space provided by the cap 50 which channels the flow of most of the oil around the top of the stator 26 and then out to a multiplicity of holes 52 to flow down to the sump and provide further cooling of the motor and compressor. Part of the oil descends internally of the motor to the annular chamber 58 to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole 62 also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator 68 from which the suction gas passes by a confined path in pipe 66 to the suction plenum 64 and the separated oil drops from the separator to the sump. By providing the oil cooling of the parts, the suction gas is not used for cooling purposes and accordingly increase in superheat is substantially avoided in the passage of the suction gas through the shell to the suction plenum 64.

REFERENCES:
patent: 2178425 (1939-10-01), Johnson
patent: 2228364 (1941-01-01), Philipp
patent: 2492611 (1949-12-01), Zearfoss
patent: 3217193 (1965-11-01), Rayner
patent: 3248044 (1966-04-01), Parker
patent: 3279683 (1966-10-01), Kleinlein
patent: 3497135 (1970-02-01), Gannaway
patent: 4313715 (1982-02-01), Richardson

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