Patent
Axial ventilator wheel
Oliver Haaf,Erhard Gruber +1 more
TLDR
In this article, an axial ventilator wheel with a hollow cylindrical hub and a plurality of axial blades is described, in which the hub is shortened with respect to the axial hub length at its inflow side in a peripheral direction between the blade bases of the adjacent blades by means of recesses around the edges.Abstract:
The invention relates to an axial ventilator wheel (1), comprising a wheel body (2) having a hollow cylindrical hub (4) and a plurality of ventilator blades (6) which are distributed around the circumference and connected to the hub (4). Each ventilator blade (6) extends in an axial direction in the area of a blade base (8) connected to the hub (4), and is inclined in a peripheral direction between an inflow side (10) and an outflow side (12) of the hub (4). The hub (4) is shortened with respect to the axial hub length thereof at its inflow side (10) in a peripheral direction between the blade bases (8) of the adjacent ventilator blades (6), respectively, by means of recesses (16) around the edges.read more
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Patent
Impeller and motor
TL;DR: In this article, an impeller includes a hub rotated about an up-down axis and inclined blades disposed circumferentially on a hub's outer circumferential surface, where the connecting portion is arranged forward of a rotating-direction blade front edge.
References
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Patent
Fan with axial blades
TL;DR: In this paper, the axial fan is arranged in the hub region on the front side or suction side of the fan to stabilize the cooling-air flow and the hub flow is stabilized by the air-guide elements in combination with the fan flow.
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Fan and impeller thereof
TL;DR: In this article, an impeller is accommodated within a fan frame, and the impeller has a hub and a plurality of blades disposed around the hub, respectively, so that the blades are connected to the hub.
Patent
Rotor, in particular for an axial fan
TL;DR: An axial ventilator has a fan with a number of blades whose roots are attached to a circular hub as discussed by the authors, and the hub has an outer face on the root side and an inner face with a series of alternating thick (5b) and thin (5a) sections.