Cooling fan without returning flow
AssigneeAsia Vital Component Co., Ltd.
InventorWen-Hao Liu
Life of this patent
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Abstract
A cooling fan without returning flow comprises a motor stator, a frame and a motor rotor. The frame is joined to the stator with a support device at the inlet side thereof. The motor rotor is disposed at the stator. A fan blade set is disposed under the rotor and at the outlet side of the frame. An airflow area of the outlet can be increased to prevent the outlet side from producing a stagnation zone so as to increase cooling area and reduce noise.
Claims27
A cooling fan without returning flow, comprising:
- a motor stator;
- a frame with an inlet side and outlet side, the inlet side joining the stator with a support device;
- and
- a motor rotor, being disposed at the stator;
- characterized in that a fan blade set is disposed under the rotor and at the outlet side;
- whereby, an airflow area of the outlet can be increased to prevent the outlet side from producing a stagnation zone so as to increase cooling area and reduce noise.
19 A cooling fan without returning flow as defined in claim 1, comprising:
- a motor stator;
- a frame with an inlet side and outlet side, the inlet side joining the stator with a support device;
- and
- a motor rotor, being disposed at the stator and providing an outer annular plane;
- characterized in that a plurality of auxiliary fan blades are mounted at the outer annular plane, a fan blade set is disposed under the rotor and at the outlet side;
- whereby, an airflow performance can be enhanced and an area of the outlet can be increased to prevent the lower part of the fan blade set from producing a stagnation zone so as to increase cooling area and reduce noise.
The cooling fan without returning flow as defined in claim 19, wherein the fan blade set is integrally made with the rotor and is disposed under the rotor.
The cooling fan without returning flow as defined in claim 19, wherein the fan blade set is attached to a central part.
The cooling fan without returning flow as defined in claim 19, wherein the central part is provided with a shape of stem.
The cooling fan without returning flow as defined in claim 19, wherein the central part has a cross section of cone and the tip thereof is disposed at the outlet side of cooling fan.
The cooling fan without returning flow as defined in claim 19, wherein the central part has a cross section of trapezoidal cone with a flat end thereof being disposed at the outlet side.
The cooling fan without returning flow as defined in claim 19, wherein the central part is attached with a joining part to allow the fan blade set being fixedly joined to the rotor.
The cooling fan without returning flow as defined in claim 19, wherein the joining part is a shaft.
The cooling fan without returning flow as defined in claim 19, wherein the joining part is a joining hook piece.
Dependencies are inferred from the claim text.