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:
May. 10, 1994
Filed:
Oct. 15, 1992
Masatoshi Terasaki, Tsuchiura, JP;
Koji Nakagawa, Matsudo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A centrifugal compressor has a diffuser with stator blades arranged therein for converting the kinetic energy of a fluid discharged from an impeller into a pressure energy. The stator blades have leading edges inclined in the downstream direction while extending away from a side plate toward a core plate. Auxiliary blades having a chord length shorter than that of each of the stator blades have leading edges inclined in the downstream direction while extending away from the side plate toward the core plate and are arranged at positions radially inward of the stator plates in such a manner that one of the surfaces of each of the auxiliary blades faces a stator blade. The compressor is capable of operating without suffering from surging and rotating stall even in a low flow rate region.