PURPOSE: To improve blast efficiency ever so better, by setting outlet height of an impeller of a blower smaller than inlet height of a volute chamber of an air guide, while setting exhaust passage height of the air guide higher as much as 1-2 times than the volute chamber inlet height.
CONSTITUTION: In regard of outlet height B1 of an impeller 14 of a blower and inlet height B2 of a volume chamber 15a as well as the volume chamber height B2 and height B3 of an exhaust passage 15b, B1<B2, B2≤B2≤2B2 is expressed. Therefore, in due consideration of the outlet height of the impeller and the volute chamber inlet height as well as the volute chamber inlet height and the exhaust passage height, blast efficiency is improvable and, what is more, surging is reducible.
TORIGOE MASAO
FUKUMOTO MASAMI
SHIMADA SADAHIRO
| JPS5546749B2 | 1980-11-26 | |||
| JPS5377318A | 1978-07-08 |