Step-type capacity varying apparatus of scroll compressor

Details Step-type capacity varying apparatus of scroll compressor Step-type capacity varying apparatus of scroll compressor

2008-01-08

2008-01-08

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

C418S055100, C417S310000

Reexamination Certificate

active

11167150

ABSTRACT:
Disclosed is a step-type capacity varying apparatus of a scroll compressor comprising: an orbiting scroll having a first filling portion step-formed with a constant height from an outer end portion of a wrap towards an inner side of the wrap, and a second filling portion extendingly formed at the first filling portion with a certain length from the outer end of the wrap; a fixed scroll engaged with the orbiting scroll by being provided with a stepped low wrap corresponding to the first filling portion and the second filling portion of the orbiting scroll; and an opening/closing unit for opening and closing a passage formed by the second filling portion of the orbiting scroll and the stepped low wrap of the fixed scroll. According to this, a fabrication cost is lowered, a capacity variation width is greatly increased, and an operation is facilitated.

REFERENCES:
patent: 4477238 (1984-10-01), Terauchi
patent: 6585501 (2003-07-01), Takeuchi et al.
patent: 04311693 (1992-11-01), None
patent: 05071477 (1993-03-01), None
patent: 05288169 (1993-11-01), None
patent: 2000-329079 (2000-11-01), None
English Language Abstract of JP 2000-329079.

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