Scroll compressor having a supply passage connecting the...

Details Scroll compressor having a supply passage connecting the... Scroll compressor having a supply passage connecting the...

2007-03-27

2007-03-27

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S055100, C418S055600, C418S057000, C418S089000, C418S096000, C418SDIG001

Reexamination Certificate

active

11015996

ABSTRACT:
A scroll type compressor includes a housing defining a discharge pressure region, a fixed scroll member having a fixed base plate and a fixed scroll wall, a movable scroll member having a movable base plate and a movable scroll wall, a fixed wall slidably supporting the movable scroll member, a back pressure chamber defined on a back surface side of the movable base plate. A supply passage connects the back pressure chamber to the discharge pressure region and passes through a sliding portion between the movable scroll member and the fixed wall. A clearance at the sliding portion varies in response to a position of the movable scroll member in a direction in which the movable scroll member approaches to or leaves from the fixed wall, whereby cross-sectional area of the clearance where gas passes is varied to adjust pressure in the back pressure chamber.

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Chinese Office Action dated Jan. 5, 2007 for Chinese Patent Application No. 2004100820897 with English translation.

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