Heat-dissipating device

• US 20050260070A1
• Filed: 06/13/2005
• Published: 11/24/2005
• 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
• Granted Patent: US 7,607,886 B2
• Time in Patent Office: Days
• US Class Current: 415/199.600
• CPC Class Codes: F04D 25/0606 the electric motor being specially adapted for integration in the pump
• CPC Class Codes: F04D 29/281 for fans or blowers

Abstract

A heat-dissipating device includes a housing having at least one opening, and a rotor disposed in the housing and having a base, a hub, a first set of blades disposed around the hub, and a second set of blades disposed on the base for increasing air volume 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 base, a hub, a first set of blades disposed around the hub, and a second set of blades disposed on the base.

2. The heat-dissipating device of claim 1, wherein the first set of blades extends downward from a periphery of the hub to a surface of the base.

3. The heat-dissipating device of claim 2, wherein the first and second sets of blades are alternately arranged.

4. The heat-dissipating device of claim 1, wherein the first and second sets of blades are correspondingly partially connected with each other.

5. The heat-dissipating device of claim 1, wherein the first and second sets of blades are shaped as curved or airfoil structures, respectively.

6. The heat-dissipating device of claim 1, wherein the first and second sets of blades are correspondingly connected with each other and bent to different directions.

7. The heat-dissipating device of claim 1, wherein the base, the hub, the first and second sets of blades are integrally formed as a single unit.

8. The heat-dissipating device of claim 1, wherein the hub and the first set of blades are integrally formed as a first unit, and the base and the second set of blades are integrally formed as a second unit to be assembled with the first unit.

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

a first frame for accommodating the rotor therein; and

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

10. The heat-dissipating device of claim 9, wherein the second frame further comprises a plurality of air-guiding members disposed along the sidewall for increasing a blast pressure of airflow passing through the heat-dissipating device.

11. The heat-dissipating device of claim 10, wherein the plurality of air-guiding members are shaped as strip, plate, curved, inclined or airfoil structures.

12. The heat-dissipating device of claim 10, wherein the second frame further comprises a support mounted inside the opening and the plurality of air-guiding members are arranged between the sidewall and the support.

13. The heat-dissipating device of claim 12, wherein the first frame has a bearing tube for allowing a first bearing to be disposed therein and the support of the second frame receives a second bearing so as to jointly support a shaft of the rotor with the first bearing.

14. The heat-dissipating device of claim 10, further comprising an another set of air-guiding members disposed on an air outlet of the housing.

15. The heat-dissipating device of claim 9, wherein the sidewall has a flange radially extending from one end thereof 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.

16. The heat-dissipating device of claim 9, 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.

17. The heat-dissipating device of claim 9, wherein the second frame has an extending part formed on an inner surface thereof and extending toward a direction of the first frame to form an axially compressed airflow passage in the housing.

18. The heat-dissipating device of claim 9, wherein a cross-sectional area of the air-gathering chamber is substantially equal in size to that of an air outlet of the housing.

19. A heat-dissipating device, comprising:

a housing having an air inlet and an air outlet; and

a rotor disposed in the housing, and having a first set of blades and a second set of blades, both of which have upper edges facing to the air inlet and positioned at different heights.

20. The heat-dissipating device of claim 19, wherein the rotor further comprises a hub for connecting the first set of blades thereon and a base for mounting the second set of blades thereon.

21. The heat-dissipating device of claim 20, wherein the first set of blades extends from a periphery of the hub to a surface of the base, and the first and second sets of blades are alternately arranged.

22. The heat-dissipating device of claim 20, wherein the first and second sets of blades are correspondingly connected with each other and bent to different directions.