US 12,710,052 B2 · Impeller

Abstract

An impeller includes a hub, an outer ring, a plurality of first blades and a plurality of second blades. The plurality of first blades are arranged around the hub at intervals. Each of the plurality of first blades passes through the outer ring, extends inward from the outer ring, and is connected to the hub. The plurality of second blades are arranged around the hub at intervals. Each of the plurality of second blades passes through the outer ring. At least one of the plurality of second blades is disposed between the plurality of first blades. Each of the second blades includes a guiding portion, which is an inclined plane disposed on an inner end, and extends obliquely downward toward the hub. A length of each of the plurality of second blades is between 10% and 45% of a length of each of the plurality of first blades.

Claims12

Dependent claims

An impeller used in a fan, comprising:

a hub;
an outer ring;
a plurality of first blades arranging around the hub at intervals, wherein each of the plurality of first blades passes through the outer ring, extends inward from the outer ring, and is connected to the hub;
a plurality of second blades arranging around the hub at intervals, wherein each of the plurality of second blades passes through the outer ring, at least one of the plurality of second blades is disposed between the plurality of first blades, each of the plurality of second blades includes a guiding portion, the guiding portion extends obliquely downward toward the hub, and a length of each of the plurality of second blades is between 10% and 45% of a length of each of the plurality of first blades;
and
two inner rings respectively arranged on two corresponding sides of the plurality of first blades between the hub and the outer ring.

3 more elements

Dependencies are inferred from the claim text.

Impeller

Life of this patent

Impeller

Life of this patent

Abstract

Claims12