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:
Jun. 19, 2012
Filed:
Aug. 18, 2009
Hirokatsu Kohsokabe, Omitama, JP;
Hirotaka Kameya, Tsuchiura, JP;
Kazuaki Shiinoki, Yokohama, JP;
Toshiaki Yabe, Shizuoka, JP;
Hirokatsu Kohsokabe, Omitama, JP;
Hirotaka Kameya, Tsuchiura, JP;
Kazuaki Shiinoki, Yokohama, JP;
Toshiaki Yabe, Shizuoka, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
An oil-free scroll compressor prevents wraps from being broken and provides improved reliability. The oil-free scroll compressor includes an orbiting scroll member and fixed scroll members, and has compression channels into which water is injected each formed between the intake port and exhaust port provided in the fixed scroll member. The oil-free scroll compressor includes temperature sensors each of which detects temperature in the compression channel, regulating valves each of which controls ratio of the amount of the water to be injected into the respective compression channels to the total amount of the water to be injected into the compression channels, and controller which controls the opening degrees of the regulating valves such that a difference between the detected temperatures from the compression channels is small.