Hitachi, Ltd.

Yukio Chihara

Kazuo Kobayashi

Masayuki Fujio

Kengo Hasegawa

Eiichi Ito

Takashi Watanabe

Susumu Yamazaki

Hiroshi Asabuki

Hiromoto Ashihara

Hajime Fujita

Kanzi Mizutani

Yuichi Nakatsuhama

Yukio Makuta

Kazuo Yanagiya

Tomoya Tamura

Takeshi Abe

Toshiharu Yoshidomi

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.

Method of manufacturing an impeller

Vortex flow blower having blades each formed by curved surface

Vortex flow blower having blades each formed by curved surface and

Vortex blower

Growing community of inventors

Chiba, Japan

Yukio Chihara