Fan

Patent metadata

Field	Value
Publication number	US-9334868-B2
Application number	US-201314074095-A
Country	US
Kind code	B2
Filing date	Nov 7, 2013
Priority date	Aug 7, 2013
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

A fan includes a motor, an impeller and a heat dissipating structure. The impeller includes a hub and a plurality of first blades. The hub receives the motor, and the hub comprises at least a heat dissipating hole. The first blades are disposed around the hub. The heat dissipating structure is disposed outside the hub. The heat dissipating structure includes a baffle and at least a second blade extending from the baffle and disposed corresponding to the heat dissipating hole.

First claim

What is claimed is:

1. A fan comprising:
a motor;
an impeller comprising:
a hub receiving the motor and comprising at least a heat dissipating hole; and
a plurality of first blades disposed around the hub; and
a heat dissipating structure disposed outside the hub, and having a baffle and at least a second blade that extends from the baffle corresponding to the heat dissipating hole,
wherein the hub includes at least a recess extending from the heat dissipating hole and the second blade is wedged in the recess, and shape of the recess corresponds to that of the bottom of the second blade.

2. The fan according to claim 1 , wherein the second blade is partially disposed in the recess and partially disposed over the heat dissipating hole.

3. The fan according to claim 1 , wherein the hub further comprises at least a first fixing portion, the heat dissipating structure includes at least a second fixing portion, and the first fixing portion is connected to the second fixing portion.

4. The fan according to claim 3 , wherein the first fixing portion and the second fixing portion are connected to each other by screwing, riveting or soldering.

5. The fan according to claim 1 , wherein the first blade and the second blade are curvature-type blades.

6. The fan according to claim 1 , wherein curvature directions of the first and second blades are the same.

7. The fan according to claim 1 , wherein the impeller further comprises two annular structures, the first blades are disposed between the annular structures, and one of the annular structures is connected to the hub.

8. The fan according to claim 7 , wherein one of the annular structures has a plurality of screw holes and is connected to the hub in a screwing way.

9. The fan according to claim 7 , wherein the annular structure connected to the hub includes an inclined surface.

10. The fan according to claim 1 , wherein the hub comprises a shaft and an iron shell.

11. The fan according to claim 10 , wherein the shaft and the iron shell are integrally formed as one piece with a main body of the hub by die-casting.

12. The fan according to claim 1 , wherein the material of the hub comprises a light metal or aluminum.

13. The fan according to claim 1 , further comprising a base, wherein the motor is disposed on the base, and the motor and the base define an accommodating space for accommodating an electronic component.

Assignees

• Delta Electronics Inc

Inventors

• Huang Shih-Han
• Chang Shun-Chen

Classifications

• F04D29/584

  cooling or heating the machine (F04D29/5846, F04D29/5853 take precedence) · CPC title

• F04D29/5806

  Cooling the drive system · CPC title

• F04D25/082 Primary

  the unit having provision for cooling the motor · CPC title

• F04D25/166

  using fans · CPC title

• F04D29/281

  for fans or blowers · CPC title