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. 11, 2022
Filed:
Oct. 21, 2020
Mitsubishi Heavy Industries Compressor Corporation, Tokyo, JP;
Hiroaki Oka, Hiroshima, JP;
Abstract
A centrifugal compressor includes a rotary shaft rotating around an axis, and a plurality of impellers fixed to and integrally rotating with the rotary shaft so that a gas flowing from an upstream side in an axial direction is compressed by being pumped outward in a radial direction. At least one of the plurality of impellers has a design point of a flow rate coefficient φ which is 0.1 to 0.2, and a machine Mach number Mof 1.1 to 1.3 and is configured to be operable between a flow rate coefficient minimum value φmin and a flow rate coefficient maximum value φmax. An operation range expressed by the following Equation (a) is 30% or higher,(Operation Range)={(Flow Rate Coefficient Maximum Value φmax)−(Flow Rate Coefficient Minimum Value φmin)}/(Flow Rate Coefficient Maximum Value φmax)   (a).