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. 02, 2024
Filed:
Feb. 28, 2020
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Takehiro Matsuzaka, Tokyo, JP;
Masakatsu Okaya, Tokyo, JP;
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD., Tokyo, JP;
Abstract
A system has a compressor for discharging compressed gas, an aftercooler for cooling the compressed gas, a first cooling liquid pathway for supplying a cooling liquid to the compressor and for cooling the cooling liquid by means of a cooling heat exchanger, and a second cooling liquid pathway for passing the cooling liquid through the aftercooler and for recovering waste heat from the cooling liquid by means of a heat recovery heat exchanger, in which the compressor system includes a first valve and a second valve disposed in a plurality of bypass pathways connecting the first cooling liquid pathway and the second cooling liquid pathway, a third valve and a fourth valve disposed in the first cooling liquid pathway, and a control unit, and in which the control unit performs first control to close the first valve and the second valve and open the third valve and the fourth valve.