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:
Sep. 13, 2016
Filed:
Aug. 08, 2011
Masahiko Takano, Shizuoka, JP;
Hideharu Tanaka, Shizuoka, JP;
Masahiko Takano, Shizuoka, JP;
Hideharu Tanaka, Shizuoka, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
An oil-cooled gas compressor provided with: a compressor body (); an oil separator () that separates out oil from a compressed gas; a gas pipe () for sending the compressed gas, from which oil has been separated out by the oil separator, to a user; and an oil pipe () for returning, to the compressor, the oil separated out by the oil separator. The following are also provided: an air-cooled heat exchanger () for cooling the aforementioned oil; a controllable-speed cooling fan () for blowing cooling air at said air-cooled heat exchanger; and a waste-heat-recovery heat exchanger (), provided upstream of the air-cooled heat exchanger, for recovering heat from the oil flowing through the abovementioned oil pipe. The speed of the cooling fan is controlled so as to bring the temperature of the compressed gas discharged from the compressor body to within a prescribed range. This makes it possible both to recover waste heat from the oil heated by being used to cool the compressor, and to suppress compressor temperature fluctuations even if the load on the waste-heat-recovery equipment varies.