Back to results
US 7,802,969 B2Granted
Fan and impeller thereof
AssigneeDelta Electronics, Inc.
InventorsChin-Hong Lee, Sung-Wei Lee, Wen-Shi Huang
Life of this patent
Estimating the term…
Abstract
A fan includes a housing, an impeller and a motor. The housing has a main body, a motor base and at least one supporting member disposed between the main body and the motor base. The impeller is disposed on the motor base and has a hub and a plurality of blades disposed around the hub. The motor is connected to the impeller for driving the impeller to rotate. Each of the blades is connected to the hub at a predetermined angle ranging from 22.5 degrees to 36 degrees.
Claims18
An impeller, comprising:
- a hub;
- and
- a plurality of blades disposed around the hub;
- wherein each of the blades is connected to the hub at a predetermined angle ranging from 22.5 degrees to 36 degrees;
- wherein each of the blades comprises an outer edge (b1) and an inner edge (b2), the outer edge is spaced apart from the hub, the inner edge is connected to the hub, and a blade ratio (A) is defined that a blade length (W) divides the average of the outer edge and the inner edge, ranges from 0.2 to 2.0.
2 more elements
A fan, comprising:
- a housing comprising a main body, a motor base, and at least one supporting member disposed between the main body and the motor base;
- an impeller disposed on the motor base and comprising a hub, and a plurality of blades disposed around the hub;
- and
- a motor connected to the impeller for driving the impeller to rotate;
- wherein each of the blades is connected to the hub at a predetermined angle ranging from 22.5 degrees to 36 degrees;
- wherein each of the blades comprises an outer edge (b1) and an inner edge (b2), the outer edge is spaced apart from the hub, the inner edge is connected to the hub, and a blade ratio (A) is defined as a blade length (W) divided by the average of the outer edge and the inner edge, ranges from 0.2 to 2.0.
3 more elements
Dependencies are inferred from the claim text.