skip to main content

Title: Oil cooled, hermetic refrigerant compressor

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 and is then delivered through the shell to the top of the motor rotor where most of it is flung radially outwardly within the confined space provided by the cap which channels the flow of most of the oil around the top of the stator and then out to a multiplicity of holes 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 to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator from which the suction gas passes by a confined path in pipe to the suction plenum 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 passagemore » of the suction gas through the shell to the suction plenum. 3 figs.« less
Authors:
;
Publication Date:
OSTI Identifier:
7258143
Report Number(s):
US 4516916; A
PPN: US 6-447927
DOE Contract Number:
W-7405-ENG-26
Resource Type:
Patent
Resource Relation:
Patent File Date: 9 Dec 1982
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COMPRESSORS; COOLING SYSTEMS; DESIGN; ELECTRIC MOTORS; REFRIGERATING MACHINERY; HEAT TRANSFER; OILS; OPERATION; ENERGY SYSTEMS; ENERGY TRANSFER; ENGINES; EQUIPMENT; MACHINERY; MOTORS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS 320303* -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Equipment & Processes