Heat dissipation module and flow direction controlling structure thereof

• US 20060081367A1
• Filed: 10/11/2005
• Published: 04/20/2006
• Est. Priority Date: 10/15/2004
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Huang, Wen-Shi, Chiu, Yung-Yu
• Granted Patent: US 7,529,088 B2
• Time in Patent Office: Days
• US Class Current: 165/296
• CPC Class Codes: F04D 25/0613 the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
• CPC Class Codes: F04D 25/166 using fans
• CPC Class Codes: F04D 29/161 especially adapted for elastic fluid pumps
• CPC Class Codes: F04D 29/462 especially adapted for elastic fluid pumps
• CPC Class Codes: F05D 2250/52 Outlet
• CPC Class Codes: H05K 7/20172 Fan mounting or fan specifications

Abstract

A heat dissipation module includes a first heat dissipation apparatus, a second heat dissipation apparatus, and a flow direction controlling structure. The first heat dissipation apparatus and the second heat dissipation apparatus are symmetrically disposed. The flow direction controlling structure has several rotatable elements disposed between the first heat dissipation apparatus and the second heat dissipation apparatus. Each of the rotatable elements has a fixed end and a correspondingly movable end for guiding airflow. The rotatable elements can be sheet-shaped, wing-shaped, arc-shaped or nonlinear in cross section. The thickness of the rotatable elements varies or decreases from the fixed end to the movable end. The rotatable elements overlap an adjacent rotatable element so as to selectively seal the heat dissipation apparatuses. The heat dissipation module and the flow direction controlling structure control airflow, remain overall outlet scope, reduce noise and improve heat dissipation efficiency of the module.

Claims

1. A flow direction controlling structure for a heat dissipation module, comprising:

a plurality of rotatable elements disposed at an outlet of the heat dissipation module, each of the rotatable elements comprising a fixed end and a correspondingly movable end, for guiding airflow.

2. The flow direction controlling structure as claimed in claim 1, wherein a cross section of each of the rotatable elements is sheet-shaped, wing-shaped, arc-shaped or nonlinear.

3. The flow direction controlling structure as claimed in claim 1, wherein a thickness of each of the rotatable elements varies from the fixed end to the movable end, or the thickness of each of the rotatable elements decreases from the fixed end to the movable end.

4. The flow direction controlling structure as claimed in claim 1, wherein each of the rotatable elements overlaps an adjacent rotatable element so as to selectively seal the heat dissipation module.

5. The flow direction controlling structure as claimed in claim 1, wherein each of the rotatable elements comprises Mylar polyester films, acrylic resin, glass fiber, or any other filmy material.

6. The flow direction controlling structure as claimed in claim 1, wherein each of the rotatable elements is disposed in one or more positions of the heat dissipation module by axial disposal, coaxial disposal, modular disposal, direct disposal on axis, engagement or other equivalent rotative structures.

7. The flow direction controlling structure as claimed in claim 1, wherein the heat dissipation module comprises a first heat dissipation apparatus and a second heat dissipation apparatus, the rotatable elements are disposed between the first heat dissipation apparatus and the second heat dissipation apparatus.

8. The flow direction controlling structure as claimed in claim 7, wherein when outlet pressure of the first heat dissipation apparatus and the second heat dissipation apparatus are different, the movable ends of the rotatable elements deflect to the first heat dissipation apparatus or the second heat dissipation apparatus to change outlet areas of the first heat dissipation apparatus and the second heat dissipation apparatus.

9. The flow direction controlling structure as claimed in claim 7, wherein when the first heat dissipation apparatus malfunctions, the movable ends of the rotatable elements are forced by air flow generated by the second heat dissipation apparatus and deflect to the first heat dissipation apparatus to seal the first heat dissipation apparatus.

10. The flow direction controlling structure as claimed in claim 7, wherein the flow direction controlling structure is modularly and rotatably formed and detachably attached in one or more positions between the first heat dissipation apparatus and the second heat dissipation apparatus.

11. A heat dissipation module, comprising:

At least one heat dissipation apparatus; and

a flow direction controlling structure, comprising a plurality of rotatable elements disposed at an outlet of the heat dissipation apparatus;

wherein each of the rotatable elements comprises a fixed end and a correspondingly movable end, for guiding airflow.

12. The heat dissipation module as claimed in claim 11, wherein a cross section of each of the rotatable elements is sheet-shaped, wing-shaped, arc-shaped or nonlinear.

13. The heat dissipation module as claimed in claim 11, wherein each of the rotatable elements overlaps an adjacent rotatable element so as to selectively seal the heat dissipation apparatus.

14. The heat dissipation module as claimed in claim 11, comprising a first heat dissipation apparatus and a second heat dissipation apparatus wherein when outlet pressure of the first heat dissipation apparatus and the second heat dissipation apparatus are different, the movable ends of the rotatable elements deflect to the first heat dissipation apparatus or the second heat dissipation apparatus to change outlet areas of the first heat dissipation apparatus and the second heat dissipation apparatus.

15. The heat dissipation module as claimed in claim 14, wherein when the first heat dissipation apparatus malfunctions, the movable ends of the rotatable elements are forced by air flow generated by the second heat dissipation apparatus and deflect to the first heat dissipation apparatus to seal the first heat dissipation apparatus.

16. The heat dissipation module as claimed in claim 14, wherein one of the rotatable elements acts as an isolation wall between the first heat dissipation apparatus and the second heat dissipation apparatus, so that the first heat dissipation apparatus and the second heat dissipation apparatus respectively have a tunnel.

17. The heat dissipation module as claimed in claim 14, wherein the flow direction controlling structure further comprises a limiting element, whereby when the first heat dissipation apparatus and the second heat dissipation apparatus are in operation, the limiting element limits the movable ends of the rotatable elements from deflecting to the first heat dissipation apparatus or the second heat dissipation apparatus.

18. The heat dissipation module as claimed in claim 14, wherein the flow direction controlling structure is modularly and rotatably formed and detachably attached in one or more positions between the first heat dissipation apparatus and the second heat dissipation apparatus.

19. The heat dissipation module as claimed in claim 14, wherein the heat dissipation module is a parallel fan, and the first heat dissipation apparatus and the second heat dissipation apparatus are axial flow fans or blowers.

20. The heat dissipation module as claimed in claim 11, wherein a thickness of each of the rotatable elements varies from the fixed end to the movable end, or the thickness of each of the rotatable elements decreases from the fixed end to the movable end.