Scroll fluid machine

Details Scroll fluid machine Scroll fluid machine

2007-01-18

2008-09-02

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

With coolant air impelling means or finned cylinder surface

C418S006000, C418S055200, C418S059000, C418S083000

Reexamination Certificate

active

07419371

ABSTRACT:
In a scroll fluid machine, a driving shaft extends axially to allow an orbiting scroll to revolve with respect to a fixed scroll thereby compressing a gas introduced from the outer circumference of the fixed scroll in a compressing chamber formed between the orbiting and fixed scrolls. From one end of the driving shaft, external air is introduced in a cooling hole extending axially of the driving shaft to cool the driving shaft. A cooling fan is rotatably secured at one end of the driving shaft to rotate by the driving shaft to cool the fixed scroll. The cooling fan comprises a base plate having a main fin on one side surface facing the side of the fixed scroll and a plurality of auxiliary fins on the other side surface to prevent cooling-finished air from invading into the cooling hole of the driving shaft.

REFERENCES:
patent: 5346374 (1994-09-01), Guttinger
patent: 5842843 (1998-12-01), Haga
patent: 6109897 (2000-08-01), Haga
patent: 7121816 (2006-10-01), Matsushima
patent: 7210913 (2007-05-01), Midorikawa
patent: 2003269101 (2003-09-01), None

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