HEAT PIPE HEAT DISSIPATION STRUCTURE

• US 20130213611A1
• Filed: 02/22/2012
• Published: 08/22/2013
• Est. Priority Date: 02/22/2012
• Status: Active Grant

• Current Assignee: Asia Vital Components Company Limited
• Original Assignee: Asia Vital Components Company Limited
• Inventors: Wu, Chun-Ming
• Granted Patent: US 9,170,058 B2
• Time in Patent Office: Days
• US Class Current: 165/104.26
• CPC Class Codes: F28D 15/0233 the conduits having a particular shape, e.g. non-circular cross-section, annular F28D15/0241, F28D15/0266 take precedence
• CPC Class Codes: F28D 15/04 with tubes having a capillary structure
• CPC Class Codes: F28D 15/046 characterised by the material or the construction of the capillary structure

Abstract

A heat pipe heat dissipation structure includes a main body. The main body has an evaporation section, a condensation section, a chamber filled with a working fluid and at least one first capillary structure. The first capillary structure is disposed on an inner wall face of the chamber. The first capillary structure has at least one swelling capillary section. The swelling capillary section swells from a part of the first capillary structure in the evaporation section. The heat pipe heat dissipation structure is able to greatly increase heat transfer efficiency.

Claims

1. A heat pipe heat dissipation structure comprising a main body, the main body having an evaporation section, a condensation section outward extending from the evaporation section, a chamber and at least one first capillary structure, the first capillary structure being disposed on an inner wall face of the chamber, the first capillary structure having at least one swelling capillary section, the swelling capillary section swelling from a part of the first capillary structure in the evaporation section, a working fluid being filled in the chamber.

2. The heat pipe heat dissipation structure as claimed in claim 1, wherein the swelling capillary section is formed on the first capillary structure and axially extends from the evaporation section to the condensation section opposite to the evaporation section, the swelling capillary section having a free end radially swelling from a part of the first capillary structure between the evaporation section and the condensation section in the chamber.

3. The heat pipe heat dissipation structure as claimed in claim 1, wherein the main body is formed with a plane face and a non-planar face opposite to the plane face.

4. The heat pipe heat dissipation structure as claimed in claim 1, wherein the main body is formed with a first plane face and a second plane face opposite to the first plane face.

5. The heat pipe heat dissipation structure as claimed in claim 2, wherein a second capillary structure is further disposed in the chamber, the second capillary structure being formed on the inner wall face of the chamber of the main body, the first capillary structure being disposed on the second capillary structure and connected therewith.

6. The heat pipe heat dissipation structure as claimed in claim 1, wherein the first capillary structure and the swelling capillary section are selected from a grouping consisting of mesh bodies, fiber bodies, sintered powder bodies, combinations of mesh bodies and sintered powder bodies and microstructure bodies.

7. The heat pipe heat dissipation structure as claimed in claim 5, wherein the second capillary structure is selected from a group consisting of a mesh body, a fiber body, a sintered powder body, a combination of mesh body and sintered powder body and a structure formed with multiple micro-channels.

8. The heat pipe heat dissipation structure as claimed in claim 2, wherein the swelling capillary section is integrally formed on a part of the first

9. The heat pipe heat dissipation structure as claimed in claim 1, wherein the evaporation section is correspondingly attached to at least one heat-generating component, while the condensation section is correspondingly connected with a heat dissipation unit, the heat dissipation unit being selected from a group consisting of a heat sink, a radiating fin assembly and a water-cooled unit.

10. The heat pipe heat dissipation structure as claimed in claim 1, wherein the inner wall face of the chamber is a smooth wall face.