Cross-flow fan and air conditioner
AssigneeGree Electric Appliances, Inc. of Zhuhai
InventorsMeiling Huang, Jianhuang Zou, Fuqi Chen, Haohao He
Life of this patent
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Abstract
A cross-flow fan and an air conditioner. The cross-flow fan includes a plurality of blades. The plurality of blades are arranged and spaced apart around a rotation axis of the cross-flow fan. Each blade has a blade centerline, and in a cross-section of each blade, the blade centerline is an arc, and a thickness of the blade continuously increases first and then continuously decreases from a middle position of the blade centerline toward two end positions thereof. In a flow channel of an airflow, the thickness of the blade of the cross-flow fan forms a double-hump distribution, thereby reducing an airflow separation and loss.
Claims11
A cross-flow fan, comprising a plurality of blades, wherein the plurality of blades are arranged and spaced apart around a rotation axis of the cross-flow fan;
- each blade has a blade centerline;
- and in a cross-section of each blade, the blade centerline is an arc, and a thickness of each blade continuously increases first and then continuously decreases from a middle position of the blade centerline toward two end positions thereof;
- wherein each blade has an outer end and an inner end;
- a minimum thickness of each blade at the middle position is dmin;
- a first portion of each blade between the middle position and the outer end has a first maximum thickness dmax1;
- a second portion of each blade between the middle position and the inner end has a second maximum thickness dmax2;
- and it is satisfied that dmin<dmax2<dmax1.
Dependencies are inferred from the claim text.