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. 01, 2019
Filed:
Feb. 22, 2013
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
An object of the present invention is to decrease a surging limit flow rate at a low flow rate time, by increasing the inflow velocity to the blade of the impeller wheel, by providing a resistive element that narrows in the radial direction a passage cross section of an air intake passage which communicates between a impeller wheel of a centrifugal compressor and an air intake opening. The centrifugal compressor includes: the compressor housinghaving the air intake openingopened in a rotary shaft direction, and the air intake passage; and the impeller wheelfor compressing the air flowing in from the air intake opening, inside the housing. The resistive elementsandagainst the air intake flow are provided in either the inner peripheral wallside portion or the center side portion of the air intake passage, so that, at the low flow rate time, a cross-sectional area of the air intake passageis narrowed by the resistive elementsandthereby increasing the inflow velocity to the bladeof the impeller wheel, and the intake air flow is biased to the hub side of the blade, and the intake air flow is biased to flow to the hub side or the shroud side of the blade