Fan wheel
AssigneeIe Assets GmbH & Co. KG
InventorsKARL HAEGELE, MARKUS LECHLER
Life of this patent
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Abstract
A fan wheel with a hub is centrally supported with respect to a drive and coaxially rotatable with the hub between stops relative to the hub. The fan wheel having fan blades extending radially from the hub are rotatable about their axes in a range delimited by the stops. Overlaying the rotational support between the stops of the hub, a rotational support between the hub and the drive is provided including a planetary drive in operative arrangement with an adjustment control ring of the driven hub. The fan blades are rotatable in the hub about their blade axes, and adjustment of the blade angles of the fan blades via drive connections to the adjustment control ring, which connections operate in a manner superimposed on one another starting from the drive of the fan wheel.
Claims5
A fan wheel (1) with a hub (4) which is centrally supported with respect to a drive (8) and coaxially rotatable therewith and with fan blades (2) extending radially from the hub (4) over its circumference and being supported in the hub (4) via pinions (13) so as to be rotatable about their axes (5) over a limited range relative to the hub (4) for an adjustment of the angular radial position of the fan blades (2) and an overlaying rotational drive (17) including a central adjustment control ring (10) rotatably disposed on the hub (4) in engagement with the blade pinions (13) and operatively connected to the drive (8) via a planetary gear arrangement (18).
The fan wheel according to claim 3, wherein the fan blades (2) are engaged with the central adjustment control ring (10) via a miter wheel gearing with pinions (13) provided at the foot ends (11) of the fan blades (2) and engaged by a gear ring (14) provided on the control ring (10).
Dependencies are inferred from the claim text.