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. 28, 2025
Filed:
Mar. 03, 2023
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Takehiro Matsuzaka, Tokyo, JP;
Masahiko Takano, Tokyo, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
A gas compressor includes: a low pressure gas path that introduces compressed gas delivered from a low pressure stage compressor body into a high pressure stage compressor body; a first low pressure gas release valve disposed on a first low pressure branch path branched from the low pressure gas path; a high pressure gas path that introduces the compressed gas delivered from the high pressure stage compressor body to a demand destination; a first high pressure gas release valve disposed on a first high pressure branch path branched from the high pressure gas path; and a control device. The first low pressure branch path is disposed on a downstream side of a heat exchanger for low pressure stage exhaust heat recovery. The first high pressure branch path is disposed on a downstream side of a heat exchanger for high pressure stage exhaust heat recovery. The control device opens the first low pressure gas release valve and the first high pressure gas release valve at a time of switching from load operation to no-load operation.