Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1998-09-30
2000-04-25
Denion, Thomas
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 97, 418 552, 418181, F01C 102
Patent
active
060537159
ABSTRACT:
An orbiting scroll is engaged to and moved orbitally in relation to a fixed scroll at variable speeds. An offset surface is provided in at least one of the wraps of the fixed scroll and/or the orbiting scroll, by which a space S is created in one of the compression chambers formed between the fixed scroll and the orbiting scroll, which is thereby unsealed and opened to the inlet port side. The offset surface has a length from a position in the spiral length which satisfies the required compression ratio of one of the compression chambers in a low speed operation to the end of the spiral. An injection port is positioned such as to open to an unsealed area of this compression chamber, and gas injection shutoff and resumption is controlled through this injection port as appropriate to the situation.
REFERENCES:
patent: 4927341 (1990-05-01), Bush
Hirano Hideo
Kawano Hiroyuki
Oka Hideto
Tsubokawa Masahiro
Denion Thomas
Matsushita Electric - Industrial Co., Ltd.
Trieu Theresa
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