Centrifugal heat dissipation fan
AssigneeAcer Incorporated
InventorsTsung-Ting Chen, Wen-Neng Liao, Cheng-Wen Hsieh, Yu-Ming Lin, Jau-Han Ke, Kuang-Hua Lin
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Abstract
A centrifugal heat dissipation fan including a housing and an impeller is provided. The housing has at least one flow inlet. The impeller assembled in the housing and rotating about an axial direction includes a hub and a plurality blades disposed around the hub. The flow inlet is located in the axial direction and faces the hub. Each of the blades has a wing tab next to the flow inlet, and the wing tab extends from a main surface of the blade to another blade. The wing tab has an inclined surface facing toward a periphery of the flow inlet along a radial direction of the impeller.
Claims13
A centrifugal heat dissipation fan, comprising:
- a housing having at least one flow inlet;
- and
- an impeller rotatably assembled in the housing along an axial direction, wherein the impeller has a hub and multiple blades arranged around the hub, the flow inlet is located in the axial direction and faces the hub, each of the blades has a wing tab adjacent to the flow inlet, the wing tab extends from a top edge of a main surface of the blade toward another adjacent blade,
- wherein the wing tab has a curved surface, a height of the curved surface relative to a bottom edge of the main surface of the blade decreases along a radial direction of the impeller, and a portion of the curved surface faces toward a periphery edge of the flow inlet,
- wherein the top edge and the bottom edge are two opposite edges of the main surface of the blade along the axial direction.
Dependencies are inferred from the claim text.