Pumps – Expansible chamber type – Having separate noncyclic valve
Patent
1997-05-19
1999-11-30
Freay, Charles G.
Pumps
Expansible chamber type
Having separate noncyclic valve
417308, 417310, F04B 4900
Patent
active
059931779
ABSTRACT:
In a scroll type compressor wherein a fixed scroll (8) has an end plate (8b) and an involute vane (8a) fixed to the end plate and is coupled to a movable scroll (5) so as to define a pair of working spaces therebetween, the end plate of the fixed scroll are formed a pair of cylinders each of which communicates with the working spaces via bypass holes (15a) and (15b) formed in the end plate of the fixed scroll. In each of the cylinders, a cylindrical piston valve member (10) is slidably received for opening and closing the bypass holes. Opening or closing of each bypass hole is determined depending on a position of an axial end of the piston valve member relative to the corresponding bypass hole.
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Higashiyama Akiyoshi
Kawano Akihiro
Shimizu Shigemi
Terauchi Kiyoshi
Evora Robert Z.
Freay Charles G.
Sanden Corporation
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