1138954-A1 is referenced by 87 patents and cites 7 patents.

The volute (17) defines, on its periphery, a gas flow guide channel (100) which has is sensibly symmetrical in section with respect to an output plane (P) of its fins on its gas flow drive wheel (14). On either side of the wheel fins are annular walls, both these walls and the fins define disjoint guides for the gas flow. Each fin defines a left surface whose normal varies through three orthogonal directions along the length of the fin. The high speed centrifuge ventilator is of the type having a casing in which is a gas flow guide volute, a finned gas flow drive wheel rotating in the volute, and a drive (12) which rotates the wheel at more than 25000 revolutions per minute, preferably between 47000 and 56000 rpm. A gas flow aspiration loop (30) extends from an input (18) formed in the casing.; A passage (32) reverses the gas flow in a centrifugal way along an output plane (P) of the wheel. The casing has an output (20) for reversing the gas flow out of the volute. The guide channel (100) is progressively increased in the direction of the output (20).

Title
Centrifugal fan
Application Number
EP20010400803 20010328
Publication Number
1138954 (A1)
Application Date
March 28, 2001
Publication Date
October 4, 2001
Inventor
Fontalbat Thierry
FR
Darnis Olivier
FR
Assignee
Technofan
FR
IPC
F04D 29/28
F04D 25/06
F04D 29/42
F04D 29/42
F04D 29/28
F04D 25/02
A61M 16/00
F04D 29/42
F04D 29/28
F04D 25/06
A61M 16/00
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