Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – With pump for non-working fluid
Patent
1987-12-22
1989-05-09
Vrablik, John J.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
With pump for non-working fluid
418 94, 418150, 184 616, F04C 2902, F01M 102, F01M 1102
Patent
active
048284661
ABSTRACT:
A horizontal type rotary compressor incorporating an oil feeding means comprises, in a casing, a lubricant reservoir retaining the lubricating oil, a compression section, a horizontally disposed electrical motor and a frame incorporating a journal-bearing in the middle thereof for supporting the shaft of the electric motor directly connected to the said compression section. The oil feeding means comprises an oil flow passage which is formed inside the said frame and lower part of which extends below the surface of the oil, an annular space formed between the journal-bearing and the shaft to communicate with the said oil flow passage and oil supply grooves formed on the periphery of the shaft to communicate with the annular space wherein the said oil supply grooves extends to the outside of the sliding portion of the axis to be exposed to the inside of the casing and the depth of the oil supply grooves is limited below the value, h, represented by the relationship. ##EQU1## where .mu. is viscosity of refrigerant, .omega. is angular velocity of shaft, R is radius of shaft, .rho. is density of lubricant, g is acceleration of gravity, H is distance from surface of lubricant to sliding surface of journal-bearing, .theta. is angle between groove and axial line of shaft and L is total length of shaft where grooves are formed.
REFERENCES:
patent: 4568253 (1986-02-01), Wood
patent: 4624630 (1986-11-01), Hirahara et al.
patent: 4626180 (1986-12-01), Tagawa et al.
Daewoo Electronics Co. Ltd.
Vrablik John J.
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