The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2011
Filed:
Sep. 03, 2004
Masakazu Okamoto, Osaka, JP;
Michio Moriwaki, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Katsumi Sakitani, Osaka, JP;
Masakazu Okamoto, Osaka, JP;
Michio Moriwaki, Osaka, JP;
Eiji Kumakura, Osaka, JP;
Tetsuya Okamoto, Osaka, JP;
Katsumi Sakitani, Osaka, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A rotary type expander is provided with two rotary mechanism parts which differ from each other in displacement volume. The outflow side of the first rotary mechanism part of small displacement volume is fluidly connected to the inflow side of the second rotary mechanism part of large displacement volume. The processes by which the volume of a first low-pressure chamber in the first rotary mechanism part decreases and the volume of a second high-pressure chamber in the second rotary mechanism part increases are respectively in sync. Refrigerant at high pressure is first introduced into a first high-pressure chamber of the first rotary mechanism part. Thereafter, this high-pressure refrigerant passes through a communicating passage and then flows by way of the first low-pressure chamber into the second high-pressure chamber while expanding. The after-expansion refrigerant flows out to an outflow port from a second low-pressure chamber of the second rotary mechanism part.