Volute inlet of fan
AssigneeCheng Home Electronics Co., Ltd.
InventorDenni Liao
Life of this patent
Estimating the term…
Abstract
The fan has a volute inlet. Designing the shape of inlet to improve the heat dissipation of the fan. The fan has a volute inlet having a reference point on the housing with respect to an outlet. The blades are partially covered by the inlet from the reference point wherein an area of the blades covered by the inlet is from a maximum to a minimum gradually in a closed loop. As a result, the set up current of air can reach a maximum prior to output from the outlet, thereby increasing the heat dissipation capability of the fan.
Claims20
A fan for cooling an electronic device, comprising:
- a plurality of blades rotatably supported by an axis;
- an outlet;
- and
- an inlet having a non-circular circumference starting from a first reference point thereof with respect to the outlet,
- the inlet partially covering the blades, the inlet being in a plane and being non-symmetrical with respect to all axes lying in the plane.
A fan for cooling an electronic device, comprising:
- a plurality of blades rotatably supported by an axis;
- an outlet;
- and
- an inlet having a circumference starting from a first reference point thereof with respect to the outlet, the inlet maximally covering the blades at the first reference point and minimally covering the blades at a second reference point, the coverage of the blades by the inlet continuously decreasing from the first reference point to the second reference point in both a first direction and a second direction, the first direction being one of clockwise and counterclockwise, the second direction being opposite to the first direction.
A fan for cooling an electronic device, comprising:
- a plurality of blades rotatably supported by an axis;
- an outlet;
- and
- an inlet having a spiral circumference starting from a first reference point thereof with respect to the outlet, the spiral circumference having a first varying radius and a second varying radius with respect to the axis, the first varying radius continuously increasing when measured from the first reference point in a first direction to a second reference point, the second varying radius continuously increasing when measured from the first reference point in a second direction to the second reference point, the first direction being one of clockwise and counterclockwise, the second direction being opposite to the first direction, the first varying radius increasing more slowly than the second varying radius.
Dependencies are inferred from the claim text.