FANWHEEL ATTACHMENT USING EXPANSION-TOLERANT CONICALLY TAPERED RINGS Russian patent published in 2016 - IPC F04D29/20 

FIELD: ventilation.

SUBSTANCE: invention relates to a fan comprising at least one wheel which is designed to collaborate with a fluid and which is attached to a shaft, itself able to rotate about axis (X-X′) of rotation, by clamping between a first supporting member and a second supporting member which are held by said shaft and forced axially toward one another. First supporting member has, where it meets wheel, a first substantially conical bearing surface, which is substantially borne by first generator cone (C₁₂) of which vertex (F₁₂), known as "first focal point", is directed toward second supporting member and of which vertex half angle (α₁₂) is greater than grip angle corresponding to coefficient of friction between said first bearing surface and wheel.

EFFECT: higher reliability of fan.

19 cl, 16 dwg