Heat-dissipating device

• US 7,497,659 B2
• Filed: 06/13/2005
• Issued: 03/03/2009
• Est. Priority Date: 05/19/2004
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Chang, Shun-Chen, Chang, Hsiou-Chen, Huang, Wen-Shi, Hsu, Wei-Chun
• Primary Examiner(s): Kershteyn; Igor
• Application Number:
  US11/150,185
• Publication Number:
  US 20050260071A1
• Time in Patent Office: 1,359 Days
• Field of Search: 415/173.7, 415/185, 415/183, 415/191, 415/203, 415/204, 415/206, 415/208.1, 415/208.2
• US Class Current: 415/183
• CPC Class Codes: F04D 29/4213 suction ports

Abstract

A heat-dissipating device includes a housing having an air inlet and an air outlet, and a rotor disposed in the housing and having a first set of blades, wherein the housing has a sidewall extending inward from the air inlet to define an air-gathering chamber in the housing, and a plurality of air-guiding members disposed along the sidewall for increasing and stabilizing a blast pressure of airflow passing through the heat-dissipating device.

Claims

1. A heat-dissipating device, comprising:

a housing having at least one opening; and

a rotor disposed in the housing and having a first set of blades, wherein the housing has a sidewall extending from the opening, and a plurality of air-guiding members disposed along the sidewall for increasing a blast pressure of airflow passing through the heat-dissipating device;

wherein the sidewall has a flange at one end thereof extending radially to define an entrance of the air-gathering chamber and each of the blades has an end extending toward the entrance of the air-gathering chamber for guiding the airflow into the air-gathering chamber.

2. The heat-dissipating device of claim 1, wherein the housing further comprises:

a first frame provided with a base for supporting the rotor; and

a second frame coupled to the first frame and provided with the opening, wherein the sidewall extends from a periphery of the opening inwardly to define an air-gathering chamber in the housing.

3. The heat-dissipating device of claim 2, wherein each of the blades has an end extending toward the entrance of the air-gathering chamber for guiding the airflow into the air-gathering chamber.

4. The heat-dissipating device of claim 2, wherein the air-gathering chamber partially or completely overlaps an air passage through the rotor in height along an axis of the heat-dissipating device.

5. The heat-dissipating device of claim 2, wherein the second frame has an extending part formed in an inner surface thereof and extending inwardly to form an axially compressed airflow passage in the housing.

6. The heat-dissipating device of claim 2, wherein the second frame has a support and the plurality of air-guiding members are arranged between the sidewall and the support.

7. The heat-dissipating device of claim 2, wherein the base of the first frame has a bearing tube formed on the base for allowing a bearing to be disposed therein and the support of the second frame receives an another bearing to support a shaft of the rotor together.

8. The heat-dissipating device of claim 1, wherein the rotor further includes a hub and a base for allowing the blades extending downward from an outer periphery of the hub to a surface of the base.

9. The heat-dissipating device of claim 8, wherein the rotor further includes a second set of blades disposed on the surface of the base and the first and second sets of blades are alternately arranged.

10. The heat-dissipating device of claim 1, wherein a first set of the plurality of air-guiding members is connected between the sidewall and the support and a second set of the plurality of air-guiding members has opposite ends respectively connected to the sidewall and the support, and a discontinuous structure to form free ends.

11. The heat-dissipating device of claim 10, wherein the first and second sets of the plurality of air-guiding members are alternately arranged.

12. The heat-dissipating device of claim 1, wherein a first set of the plurality of air-guiding members is connected between the sidewall and the support, a second set of the plurality of air-guiding members has one end connected to the sidewall and a free end, and a third set of the plurality of air-guiding members has one end connected to the support and a free end.

13. The heat-dissipating device of claim 12, wherein the first, second and third sets of the plurality of air-guiding members are alternately arranged.

14. The heat-dissipating device of claim 1, wherein the plurality of air-guiding members are shaped as strip, plate, curved, inclined or airfoil structures.

15. The heat-dissipating device of claim 1 further comprising another set of air-guiding members mounted on an another opening for discharging or intaking the airflow.

16. A heat-dissipating device, comprising:

a housing having at least one air inlet and an air outlet; and

a rotor disposed in the housing and having a first set of blades, wherein the housing has a sidewall extending inward from the air inlet to define an air-gathering chamber in the housing, and a plurality of air-guiding members disposed along the sidewall for increasing a blast pressure of airflow passing through the heat-dissipating device;

wherein the sidewall has a flange at one end thereof extending radially to define an entrance of the air-gathering chamber and each of the blades has an end extending toward the entrance of the air-gathering chamber for guiding the airflow into the air-gathering chamber.

17. The heat-dissipating device of claim 16, wherein a first set of the plurality of air-guiding members is connected between the sidewall and a support positioned on the air inlet and a second set of the plurality of air-guiding members has opposite ends respectively connected to the sidewall and the support, and a discontinuous structure to form free ends.

18. The heat-dissipating device of claim 16, wherein a first set of the plurality of air-guiding members is connected between the sidewall and a support positioned on the air inlet, a second set of the plurality of air-guiding members has one end connected to the sidewall and a free end, and a third set of the plurality of air-guiding members has one end connected to the support and a free end.

19. The heat-dissipating device of claim 16, wherein the plurality of air-guiding members are shaped as strip, plate, curved, inclined or airfoil structures.

20. The heat-dissipating device of claim 16 further comprising another set of air-guiding members mounted on the air outlet.