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US 11,454,249 B2Granted
Heat dissipation fan
AssigneeAcer Incorporated
InventorsTsung-Ting Chen, Wei-Chin Chen, Cheng-Wen Hsieh, Wen-Neng Liao
Life of this patent
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Abstract
A heat dissipation fan including a housing, a hub, and a plurality of blades is provided. The hub is rotatably disposed in the housing. The blades are disposed at a surrounding edge of the hub to be rotated with the hub. When the heat dissipation fan is operated, at least one flow path is formed by two adjacent blades, and the flow path has a reduction section away from the hub.
Claims17
A heat dissipation fan, comprising:
- a housing;
- a hub rotatably disposed in the housing;
- and
- a blade structure disposed at a surrounding edge of the hub to be rotated with the hub, wherein the blade structure has a plurality of first blades and a plurality of second blades spaced apart from each other, wherein the first blades are connected to the hub, the second blades are not connected to the hub, when the heat dissipation fan is operated, the two adjacent first blades form a flow path, each of the second blades is located between the two adjacent first blades to form two divided paths branching from the flow path, in a direction away from the hub, one of the divided paths is continuously tapered, and the other of the divided paths is continuously expanded.
1 more element
A heat dissipation fan, comprising:
- a housing;
- a hub rotatably disposed in the housing;
- and
- a blade structure disposed at a surrounding edge of the hub to be rotated with the hub, wherein the blade structure has a plurality of first blades and a plurality of second blades spaced apart from each other, wherein the first blades are connected to the hub, the second blades are not connected to the hub, when the heat dissipation fan is operated, the two adjacent first blades form a flow path, each of the second blades is located at the flow path and a width of the second blades gradually increases in a direction away from the hub, to form two divided paths branching from the flow path, and in the direction away from the hub, the two divided paths are continuously tapered.
1 more element
Dependencies are inferred from the claim text.