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:
Jul. 20, 2010
Filed:
Jan. 29, 2007
Kazuyuki Fujimura, Hitachinaka, JP;
Takeshi Tsuchiya, Tsuchiura, JP;
Yuichi Yanagase, Namegata, JP;
Makoto Aoki, Kasama, JP;
Masashi Miyake, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Satoshi Nakamura, Shizuoka, JP;
Masaru Ohtahara, Shizuoka, JP;
Syuuji Hasegawa, Shizuoka, JP;
Hiroyuki Imamura, Shizuoka, JP;
Yoshinobu Yosuke, Shizuoka, JP;
Kenji Tojo, Moriya, JP;
Kazuyuki Fujimura, Hitachinaka, JP;
Takeshi Tsuchiya, Tsuchiura, JP;
Yuichi Yanagase, Namegata, JP;
Makoto Aoki, Kasama, JP;
Masashi Miyake, Shizuoka, JP;
Mutsunori Matsunaga, Shizuoka, JP;
Satoshi Nakamura, Shizuoka, JP;
Masaru Ohtahara, Shizuoka, JP;
Syuuji Hasegawa, Shizuoka, JP;
Hiroyuki Imamura, Shizuoka, JP;
Yoshinobu Yosuke, Shizuoka, JP;
Kenji Tojo, Moriya, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
A scroll fluid machine comprises compression chambers defined with an orbiting scroll orbiting relative to a fixed scroll, and a back pressure chamber provided on the face opposite from a wrap of the orbiting scroll. A back pressure port is provided, which is formed in an end-plate of the orbiting scroll and connects from a compression chamber side opening opened to a compression chamber side and to a back pressure chamber side opening opened to a back pressure chamber side. The compression chamber side opening is opened and closed by an end-plate of the fixed scroll according as the orbiting motion of the orbiting scroll to perform connection and blockage of the back pressure port. The flow resistance of fluid flowing in and out between the back pressure chamber and the compression chamber is reduced and the compression efficiency and reliability are improved.