Kabushiki Kaisha Toshiba

Hirohumi Horino

Yoichiro Kobayashi

Akira Nagamori

Satoru Konno

Yoshio Ikeda

Tsutomu Hirose

A transverse fan includes a pair of end plates each having an annular shape, a plurality of blades annularly disposed between the end plates and a plurality of partition plates each having an annular shape and disposed at intermediate portions of the blades. Each of the partition plates has one side surface to which base ends of the blades are integrally secured to extend forward with a predetermined inclination and form a multi-blade impeller. A plurality of the multi-blade impeller are stacked axially so that each of the partition plates has another one side surface to which leading ends of the blades of adjacent multi-blade impeller are connected, and one of the end plate has one surface to which the leading ends of the blades of a leading end side one of the stacked multi-blade impellers are connected and another one of the end plates has one surface to which the base ends of the blades of a base end side one of the stacked multi-blade impellers is secured. The another one of the end plates is provided with a boss portion to which a rotation shaft for rotating the transverse fan is secured. Each of the multi-blade impellers is injection molded integrally in a mold and the multi-blade impeller is thereafter withdrawn from the mold while rotating the multi-blade impeller about a rotation axis thereof.

Transverse fan, method of manufacturing the same and apparatus therefor

A transverse fan in which a plurality of blades are disposed between disk- or ring-shaped end plates in a circumferential arrangement at fixed mounting pitches in a ring-shaped configuration. Partitions plates are disposed at intermediate portions in the longitudinal direction of the blades such that each of the blades is inclined at fixed angles with respect to a fan axis and mounted at unequal pitches. The transverse fan includes a plurality of multi-bladed impeller units disposed between the disk-shaped end plates. Each of the multi-bladed impeller units has one disk-shaped partition plate having one surface on which a plurality of blades are integrally disposed along a circumferential direction thereof at unequal pitches and inclined at predetermined angles so as to extend along the axial direction of the transverse fan. A plurality of the multi-bladed impeller units are integrally stacked coaxially with each other to form the transverse-fan. The multi-bladed impeller units are integrally stacked one by one in an arrangement such that the units are displaced at predetermined angles with respect to each other around the fan axis.

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Fuji, Japan

Hirohumi Horino