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. 16, 1996
Filed:
Nov. 30, 1994
Susumu Yamazaki, Tsuchiura, JP;
Eiichi Ito, Narashino, JP;
Hiroshi Asabuki, Sakura, JP;
Masayuki Fujio, Sakura, JP;
Hajime Fujita, Tsuchiura, JP;
Kazuo Kobayashi, Chiba, JP;
Kengo Hasegawa, Sakura, JP;
Yukio Chihara, Chiba, JP;
Hiromoto Ashihara, Funabashi, JP;
Takashi Watanabe, Narita, JP;
Kanzi Mizutani, Sakura, JP;
Yuichi Nakatsuhama, Narita, JP;
Yukio Makuta, Narashino, JP;
Kazuo Yanagiya, Funabashi, JP;
Tomoya Tamura, Sakura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A vortex flow blower used as an air source to be incorporated into general industrial machines. The vortex flow blower is characterized in that the shape of the blade in its impeller is three dimensionally formed such that at least the inner portion of the blade can be adapted to the three dimensional internal flow. According to the present invention, the aerodynamic performance can be significantly improved and the size of a vortex flow blower can be reduced. Furthermore, an impeller having three dimensionally shaped blades is manufactured by independently manufacturing the shroud and the blades and coupling them, so that the impeller of a complicated shape can be readily manufactured. Furthermore, since the blade can be made of a thin and light material, the secondary moment of inertia of the impeller can be reduced.