Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1997-12-09
2000-07-18
Nguyen, Hoang
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 552, 418 15, F01C 102
Patent
active
060898399
ABSTRACT:
The locations of economizer ports in a scroll compressor are optimized such that the ports supply supplemental fluid to compression chambers prior to the outer seal points closing the compression chambers. Thus, the economizer port supplies fluid against a low average pressure and the amount of fluid injected from the economizer port is maximized. The location of the economizer port is preferably selected such that a wave caused in the compression chamber due to the injection of fluid from the economizer port does not reach the outer seal point until the outer seal point closes the compression chamber. Thus, there is no back flow from the economizer port toward the main suction chamber, and no corresponding reductions in the main suction flow.
REFERENCES:
patent: 4331002 (1982-05-01), Ladusaw
patent: 4514150 (1985-04-01), Hiraga et al.
patent: 4547137 (1985-10-01), Terauchi et al.
Patent Abstracts of Japan, Publication No. 10037868; Publication Date: Feb. 13, 1998.
Patent Abstracts of Japan, Publication No. 5715384; Publication Date: Sep. 22, 1982.
Bush James W.
Lifson Alexander
Carrier Corporation
Nguyen Hoang
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