Scroll compressor having an annular recess located outside...

Details Scroll compressor having an annular recess located outside... Scroll compressor having an annular recess located outside...

2007-06-12

2007-06-12

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S055200, C418S057000, C418S075000

Reexamination Certificate

active

10552579

ABSTRACT:
A surface of a fixed scroll which is opposed to a end plate of an orbiting scroll existing outside of a lap of the fixed scroll is formed with: a substantially annular seal portion which extends such as to have an outer wall surface of the fixed scroll outwardly extending from an inner wall surface of outermost periphery of the lap substantially along the inner wall surface, and which comes into slide contact with the end plate of the orbiting scroll; a substantially annular recess located outside of the substantially annular seal portion; and a recess which is brought into communication with an intake port of the fixed scroll independently from the substantially annular recess. With this, back pressure of the orbiting scroll is increased, and turning-over phenomenon of the orbiting scroll can be suppressed.

REFERENCES:
patent: 4443166 (1984-04-01), Ikegawa et al.
patent: 5730588 (1998-03-01), Terai et al.
patent: 5791887 (1998-08-01), Williams et al.
patent: 6345967 (2002-02-01), Mukai et al.
patent: 04321701 (1992-11-01), None
patent: 06137281 (1994-05-01), None
patent: 2001153068 (2001-06-01), None
patent: 2001-355584 (2001-12-01), None

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