Scroll-type fluid machine having a back-pressure chamber

Details Scroll-type fluid machine having a back-pressure chamber Scroll-type fluid machine having a back-pressure chamber

2008-08-14

2011-10-04

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S051000, C418S057000, C418S140000

Reexamination Certificate

active

08029254

ABSTRACT:
Provided is scroll-type fluid machine that facilitates the formation of a back-pressure chamber so as to increase the design freedom in the space on the back side of the revolving scroll member, where it is difficult to ensure sufficient space, by decreasing, as much as possible, the installation space of the sealing member partitioning the back-pressure chamber. In the scroll-type fluid machine, a back-pressure chamber to which high-pressure gas is introduced is partitioned between the revolving scroll member and a fixed support member, a sealing member is constructed of an annular U sealing member, the annular U sealing member is oriented in a direction orthogonal to the back side of the revolving scroll member, and one side contacts a side surface (sealed surface) of a fixed support member.

REFERENCES:
patent: 6389837 (2002-05-01), Morozumi
patent: 2002/0020186 (2002-02-01), Morozumi
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International Search Report of PCT/JP2008/064578, mailing date of Oct. 14, 2008.

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