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. 22, 2013
Filed:
Jun. 04, 2010
Norio Matsumoto, Sakai, JP;
Nozomi Gotou, Sakai, JP;
Shigeharu Shikano, Sakai, JP;
Hideyuki Gotou, Sakai, JP;
Harunori Miyamura, Sakai, JP;
Norio Matsumoto, Sakai, JP;
Nozomi Gotou, Sakai, JP;
Shigeharu Shikano, Sakai, JP;
Hideyuki Gotou, Sakai, JP;
Harunori Miyamura, Sakai, JP;
Daikin Industries, Ltd., Osaka, JP;
Abstract
A screw compressor includes a screw rotor, a casing, a low pressure space, a bypass passage and a slide valve. The screw rotor is provided with a plurality of helical grooves forming fluid chambers. The casing includes a cylinder portion with the screw rotor disposed in the cylinder portion. The low pressure space is formed in the casing to receive a flow of uncompressed, low pressure fluid. The bypass passage is opened in an inner peripheral surface of the cylinder portion to communicate the fluid chamber with the low pressure space. The slide valve is slideable in an axial direction of the screw rotor to change an area of an opening of the bypass passage in the inner peripheral surface of the cylinder portion. An end face of the slide valve facing the bypass passage is inclined along an extending direction of the helical grooves.