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:
Oct. 14, 2014
Filed:
Mar. 15, 2010
Shigeharu Shikano, Sakai, JP;
Nozomi Gotou, Sakai, JP;
Norio Matsumoto, Sakai, JP;
Hideyuki Gotou, Sakai, JP;
Harunori Miyamura, Sakai, JP;
Shigeharu Shikano, Sakai, JP;
Nozomi Gotou, Sakai, JP;
Norio Matsumoto, Sakai, JP;
Hideyuki Gotou, Sakai, JP;
Harunori Miyamura, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A screw compressor includes a casing, a screw rotor, an oil sump containing lubricant oil, a lubrication passage and a flow rate controller. The screw rotor is inserted in a cylinder portion of the casing to form a fluid chamber. The screw rotor rotates to suck a fluid into the fluid chamber for compression. The lubrication passage supplies the lubricant oil in the oil sump to the fluid chamber due to a difference in pressure between the oil sump and the fluid chamber. The flow rate controller reduces a flow rate of the lubricant oil supplied to the fluid chamber in accordance with a decrease in operating capacity of the screw compressor.