Multiple blade fan, forming method and device for producing melting metal thereof

Application Number: 00108353
Application Date: 2000.03.02
Publication Number: 1280254
Publication Date: 2001.01.17
Priority Information: 1999/12/17 JP 358935/99; 1999/12/17 JP 358936/99; 1999/3/3 JP 55123/99; 1999/3/3 JP 55124/99
International: F04D29/28;F04D29/32;B22D17/00
Applicant(s) Name: Mitsubishi Motor Co., Ltd.
Inventor(s) Name: Kikuchi Jin;Iwamura Yoshiki;Makino Yasuyoshi
Patent Agency Code: 72001
Patent Agent: wen dapeng
Abstract As to sirocco fan blade with thin-plate shape and complicated structure, if it is made of high-strength special plastic material, there exist recycling problems; also if made of steel-plate and filling-gap material, there exist time-consuming manufacturing problems. A fan according to the present invention can be monolithically molded out of a metal with a low energy in combination with a structure of a metal mold, in which gate arrangement and/or distribution of dimensions of vanes is devised in injecting a low melting-point metal such as magnesium, wherein not only production but also reproducing such as recycling are facilitated, and also a metal wave of the fan can be produced in consideration of the global atmosphere preservation.