EP 0100078 B1 19871021 - AXIAL VENTILATOR
Title (en)
AXIAL VENTILATOR
Publication
Application
Priority
DE 3227698 A 19820724
Abstract (en)
[origin: US4734015A] An axial-flow fan, particularly a small fan which is axially compact, with a scroll plate surrounding the impeller and whose inner contour has a cylindrical configuration in the vicinity of the axial median plane and extends both towards the inlet side and the outlet side in a polygonal, particularly square profile accompanied by the formation of corner areas, and with a central, coaxial core formed by the drive motor, the impeller hub and the mounting flange for the drive motor; the core thereby has an annular surface conically tapering towards the inlet side face whose axial length is at least one-third of the hub length; with respect to the axial median plane, the scroll plate is asymmetrical in the corner areas and is made cylindrical over a longer distance from the axial median plane to the inlet side than to the outlet side.
IPC 1-7
IPC 8 full level
F24F 7/013 (2006.01); F04D 19/00 (2006.01); F04D 25/06 (2006.01); F04D 29/52 (2006.01)
CPC (source: EP US)
F04D 19/002 (2013.01 - EP US); F04D 25/0613 (2013.01 - EP US); F04D 29/526 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0100078 A1 19840208; EP 0100078 B1 19871021; EP 0100078 B2 19930630; CA 1338735 C 19961126; DE 3227698 A1 19840126; DE 3227698 C2 19910117; DE 3374144 D1 19871126; JP H0650119 B2 19940629; JP S5977240 A 19840502; SG 64990 G 19910214; US 4734015 A 19880329
DOCDB simple family (application)
EP 83107227 A 19830722; CA 433021 A 19830722; DE 3227698 A 19820724; DE 3374144 T 19830722; JP 13451783 A 19830725; SG 64990 A 19900806; US 6738987 A 19870626