Pumps – Expansible chamber type – Moving cylinder
Patent
1998-10-19
2000-08-15
Walberg, Teresa
Pumps
Expansible chamber type
Moving cylinder
4174103, 4174104, 417902, F04B 1902
Patent
active
061026778
ABSTRACT:
A hermetic compressor according to the present invention uses a compressing mechanism which includes a rotary cylinder having a groove, and a piston slidable in the groove, so that the piston is rotated on a locus of a radius E about a position spaced apart at a distance E from the center of the rotary cylinder, thereby performing a compression stroke. In this compressing mechanism, the rotary cylinder is rotated and slid within the groove by rotation of the piston on the locus of the radius E about the position spaced apart at the distance E from the center of the rotary cylinder. Therefore, two spaces are defined in the groove by the piston and varied in volume by the sliding movement of the piston, whereby the compression and suction can be carried out.
In this way, the compressing mechanism performs the compression and suction by only the rotating motions of the rotary cylinder and the piston, and does not require a member which is moved in a diametrical direction, such as vanes required in a rotary compressor, Oldham ring required in a scroll compressor and the like. Therefore, it is possible to realize a hermetic compressor, in which even if the compressing mechanism is fixed within a shell, only an extremely small vibration occurs.
REFERENCES:
patent: 4648811 (1987-03-01), Tahata et al.
patent: 5358386 (1994-10-01), Koyama et al.
patent: 5419692 (1995-05-01), Irino
patent: 5531574 (1996-07-01), Honma
Iida Noboru
Sawai Kiyoshi
Matsushita Electric - Industrial Co., Ltd.
Patel Vinod D
Walberg Teresa
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