F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
230/37
F04D 17/06 (2006.01) F04C 29/02 (2006.01)
Patent
CA 2040721
HERMETICALLY SEALED SCROLL TYPE REFRIGERANT COMPRESSOR WITH AN IMPROVED LUBRICATING MECHANISM ABSTRACT OF THE DISCLOSURE A hermetically sealed scroll type compressor includes a lubri- cating mechanism. The compressor includes a hermetically sealed housing and a motor driven drive shaft supported by a plurality of plain bearings in an inner block member. The drive shaft is provided with pin member at its upper end. The axis of pin member is radially offset from the axis of the drive shaft. The pin member is opera- tively connected to an orbiting scroll which orbits within a fixed scroll. A rotation preventing device prevents rotation of the orbiting scroll. The drive shaft includes an axial bore extending from a lower end thereof to a lower end of the pin member. A centrifugal pump is provided at a lower end of the axial bore, and immersed in the lubri- cating oil pump at an inner bottom of the housing. A throttling device, such as an orifice tube, penetrates through the pin member. The lubricating oil at the inner bottom of the housing is supplied to the frictional surfaces of the slidable members of the compressor by operation of the centrifugal pump supplying lubricating oil through the axial bore and the orifice tube. The frictional surfaces can thereby receive a sufficient, but not excessive, amount of the lubri- cating oil at any rotational speed of the drive shaft so that the fric- tional surfaces are effectively lubricated.
Fukui Tsuyoshi
Kikuchi Kazuto
Yoshii Yuji
Fukui Tsuyoshi
Kikuchi Kazuto
Sanden Corporation
Sim & Mcburney
Yoshii Yuji
LandOfFree
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