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:
Jan. 07, 2014
Filed:
Feb. 28, 2008
Hideharu Tanaka, Shizuoka, JP;
Masahiko Takano, Shizuoka, JP;
Akihiro Nagasaka, Shizuoka, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
In an oil-cooled air compressor for controlling a temperature of a lubricant by changing a flow rate of a cooling medium supplied to a heat exchanger for the lubricant, for obtaining an energy saving effect by variable control of the flow rate of the cooling medium and preventing securely a condensed water from occurring in a compressor unit even when an exhaust duct is arranged inappropriately, a lubricant flow rate adjustor is arranged to measure a temperature of the lubricant and decreasing a flow rate of the lubricant supplied to the heat exchanger so that the lubricant temperature becomes Tto satisfy T>T≧TD when Tis a control temperature of the lubricant and TD is a condensed water occurrence critical temperature at which a condensed water occurs in the compressor.