Impeller with variable backsweep angle
AssigneeCarrier Corporation
InventorsVishnu Sishtla, Chaitanya Halbe
Life of this patent
Estimating the term…
Abstract
Described herein is an impeller for a flow device. The impeller comprises a hub, and a plurality of blades extending radially outwards from the hub, wherein each of the blades is at least partially attached to an outer surface of the hub such that at least a portion of a tip end, opposite to the hub, of the corresponding blades remains unattached to the outer surface of the hub, wherein the unattached portion of the blades is free to deflect based on a rotational speed of the impeller and correspondingly adjust a backsweep angle of the corresponding blades within a predefined range.
Claims20
An impeller for a flow device, the impeller comprising:
- a hub;
- and
- a plurality of blades, wherein each blade comprises:
- an attached portion, attached to an outer surface of the hub;
- and
- an unattached tip end portion, extending radially beyond and unattached to the outer surface of the hub,
- wherein the unattached tip end portion of a blade of the plurality of blades is configured to deflect based on a rotational speed of the impeller and correspondingly adjust a backsweep angle of the blade within a predefined range, and
- wherein at least part of the attached portion is curved in a direction different from a curvature of the unattached tip end portion of the blade.
Dependencies are inferred from the claim text.