Cooling fan impeller
AssigneesFurui Precise Component (Kunshan) Co., Ltd., Foxconn Technology Co., Ltd.
InventorsCHING-BAI HWANG, ZHI-HUI ZHAO, RAN LIN
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Abstract
An impeller of a centrifugal fan includes a hub and a plurality of blades arranged on and around the hub. Each of the blades includes a root portion and a tip portion. The tip portion of each of the blades has a concave surface and a convex surface in rear and front sides thereof respectively. In a rotational direction of the impeller, the tip portion of a rear blade protrudes towards a front blade.
Claims13
1 An impeller of a centrifugal fan, the impeller comprising:
- a hub;
- and
- a plurality of blades arranged on and around the hub, each of the blades including a root portion and a tip portion, the root portion connecting with the hub and the tip portion forming a free end of the blade, the tip portion being curved along at least one of a longitudinal axis and a transverse axis of each of the blades of the impeller.
The impeller of a centrifugal fan of claim 1, wherein the tip portion is curved along both the longitudinal axis and the transverse axis.
The impeller of a centrifugal fan of claim 1, wherein the tip portion of each of the blades is semicircular along the transverse axis thereof.
The impeller of a centrifugal fan of claim 1, wherein the root portion of each of the blades is curved along the transverse axis thereof.
The impeller of a centrifugal fan of claim 1, wherein the tip portion of each of the blades includes a concave surface facing and driving air when the impeller rotates.
The impeller of a centrifugal fan of claim 1, wherein the tip portion includes an upper portion and a lower portion, the upper portion is curved and the lower portion is straight.
An impeller of a centrifugal fan, the impeller comprising:
- a hub;
- and
- a plurality of blades arranged on and around the hub, each of the blades including a root portion and a tip portion, the tip portion of each of the blades having a concave surface and a convex surface on rear and front sides thereof respectively, and in a rotational direction of the impeller, the tip portion of a rear blade protrudes towards a front blade.
Dependencies are inferred from the claim text.