Impeller for radial-flow heat dissipating fan
AssigneeSunonwealth Electric Machine Industry Co., Ltd.
InventorsAlex Horng, Yu-Yuan Lu, Mei-Chih Fang
Life of this patent
Estimating the term…
Abstract
An impeller for a radial-flow heat dissipating fan includes a hub and a plurality of blades surrounding the hub. The blades are connected to a circumference of the hub to allow joint rotation of the hub and the blades. More than one blade include an air inlet side edge and an air outlet side edge. The air inlet side edge of each of the more than one blade has a radial length smaller than that of the air out side edge, thereby increasing an air inlet amount and smoothly changing incoming axial airflow into centrifugal airflow.
Claims26
An impeller for a radial-flow heat dissipating fan, comprising:
- a hub having a circumference;
- a plurality of blades surrounding the hub;
- and
- at least one supporting member connecting at least one of the blades to the circumference of the hub;
- and,
- wherein the impeller includes a first set of said blades and a second set of said blades that are alternately disposed, each of said second set of blades having a rectilinear inner edge, the air inlet side edge of each of the second set of blades having a radial length the same as that of the air outlet side edge of each of the second set of blades, the air inlet side edge of each of the first set of blades having a radial length smaller than that of the air outlet side edge of each of the second set of blades, thereby increasing an air inlet amount and smoothly changing incoming axial airflow into centrifugal flow.
An impeller for a radial-flow heat dissipating fan, comprising:
- a hub having a circumference;
- a plurality of blades surrounding the hub;
- and
- at least one supporting member connecting at least one of the blades to the circumference of the hub;
- wherein said at least one of the blades includes an air inlet side edge and an air outlet side edge, the air inlet side edge having a radial length smaller than that of the air outlet side edge;
- and wherein an inner edge of said at least one of the blades includes a first section and a second section that are rectilinear to form a shoulder.
An impeller for a radial-flow heat dissipating fan, comprising:
- a hub having a circumference;
- a plurality of blades surrounding the hub;
- at least one supporting member connecting the blade to the circumference of the hub;
- and
- at least one connecting ring extending across the blade;
- wherein at least one of the blades includes an air inlet side edge and an air outlet side edge, the air inlet side edge having a radial length smaller than that of the air outlet side edge.
An impeller for a radial-flow heat dissipating fan, comprising:
- a hub having a circumference;
- a plurality of blades surrounding the hub;
- and
- at least one plate-like supporting member extending from the circumference of the hub, aid blades being mounted on a dies of the plate-like supporting member;
- wherein at least one of the blades includes an air inlet side edge and an air outlet side edge, the air inlet side edge having a radial length smaller than that of the air outlet side edge.
Dependencies are inferred from the claim text.