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:
Jul. 14, 2009
Filed:
May. 06, 2005
Yasuhiro Inoue, Kasumigaura, JP;
Takashi Aki, Tsuchiura, JP;
Seiji Kawabata, Tsuchiura, JP;
Sadashi Tanaka, Kasumigaura, JP;
Yasuhiro Inoue, Kasumigaura, JP;
Takashi Aki, Tsuchiura, JP;
Seiji Kawabata, Tsuchiura, JP;
Sadashi Tanaka, Kasumigaura, JP;
Hitachi Industries Co., Ltd., Tokyo, JP;
Abstract
A prewhirl type inlet casing for inducing a spiral stream in fluid has a suction passage arranged on an upstream side, being orthogonal to a rotary shaft of fluid machinery, and an internal passage connected to the suction passage, the internal passage being formed in a spiral shape so as to induce a swirl stream orthogonal to the rotary shaft in the fluid. A guide vane provided in the fluid passage in the inlet casing has a rectifying function capable of distributing flow rates in the swirl stream of the fluid in the internal passage between the swirl center side and the swirl outer peripheral side, and causing the fluid to deflect into the swirling direction of the swirl stream induced by the internal passage.