HEAT PIPE

• US 20100181048A1
• Filed: 06/11/2009
• Published: 07/22/2010
• Est. Priority Date: 01/16/2009
• Status: Abandoned Application

• Current Assignee: Foxconn Technology Co., Ltd., Furui Precise Component Company Limited
• Original Assignee: Foxconn Technology Co., Ltd., Furui Precise Component Company Limited
• Inventors: MENG, JIN-GONG, HSIEH, YI-SHIH, HWANG, CHING-BAI
• Application Number:
  US12/483,228
• Publication Number:
  US 20100181048A1
• Time in Patent Office: Days
• US Class Current: 165/104.260
• CPC Class Codes: C25D 5/34 Pretreatment of metallic surfaces to be electroplated
• CPC Class Codes: C25D 5/44 Aluminium
• CPC Class Codes: C25D 5/50 by heat-treatment
• 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 15/046 characterised by the material or the construction of the capillary structure

Abstract

A heat pipe includes a casing and a three-dimensional cross-linkage wick structure received in the casing. The three-dimensional cross-linkage wick structure has a plurality of pores therein for providing a capillary action and includes a bottom layer being attached to the casing and a plurality of protrusions extending from the bottom layer and spaced from each other. A groove is defined between two adjacent protrusions. The bottom layer has a connecting portion under the groove. The connection portion is formed between and connects with the two adjacent protrusions. The connection portions have a smaller pore size than the protrusions.

Claims

1. A heat pipe comprising:

a casing;

a three-dimensional cross-linkage wick structure received in the casing and having a plurality of pores therein for providing a capillary action, the three-dimensional cross-linkage wick structure comprising;

a bottom layer being attached to the casing; and

a plurality of protrusions extending from the bottom layer and spacing from each other, a groove being defined between two adjacent protrusions, the bottom layer having a connection portion just under the groove, the connection portion being formed between and connecting with the two adjacent protrusions, the connection portion having a smaller pore size than the protrusions.

2. The heat pipe as claimed in claim 1, wherein the casing is flat and has an upper plate and a bottom plate being located under the upper plate, the bottom layer of the three-dimensional cross-linkage wick structure being flat and attached to the bottom plate, a top of each of the protrusions abutting on the upper plate.

3. The heat pipe as claimed in claim 2, wherein the groove defined between the two adjacent protrusions is provided as a vapor channel.

4. The heat pipe as claimed in claim 1, wherein the casing is round, the bottom layer being attached to an inner peripheral surface of the casing, the protrusions extending radially and inwardly from the bottom layer toward a center of heat pipe.

5. The heat pipe as claimed in claim 1, wherein a shape of each of the protrusions is selected from a group consisting of trapezium, triangle, and rectangle.

6. A heat pipe comprising:

a casing;

a three-dimensional cross-linkage wick structure received in the casing and having a plurality of pores therein for providing a capillary action, the three-dimensional cross-linkage wick structure comprising;

a bottom layer being attached to the casing;

a plurality of protrusions extending from the bottom layer and spacing from each other, a groove being defined between two adjacent protrusions, the bottom layer having a connection portion just under the groove, the connection portion being formed between and connecting with the two adjacent protrusions; and

a working medium saturated in the pores of the wick structure;

wherein the connection portions have a smaller pore size than the protrusions, the connection portions have a larger capillary force for the working medium in comparison with the protrusions, and the protrusions have a lower flow resistance for the working medium in comparison with the connection portions.

7. The heat pipe as claimed in claim 6, wherein the casing is flat and has an upper plate at a top side thereof and a bottom plate at a bottom side thereof, the bottom layer of the three-dimensional cross-linkage wick structure being flat and attached to the bottom plate, a top of each of the protrusions abutting on the upper plate.

8. The heat pipe as claimed in claim 7, wherein the groove defined between the two adjacent protrusions is provided as a vapor channel.

9. The heat pipe as claimed in claim 6, wherein the casing is round, the bottom layer being attached to an inner peripheral surface of the casing, the protrusions extending radially and inwardly from the bottom layer toward a center of the heat pipe.

10. The heat pipe as claimed in claim 6, wherein a shape of each of the protrusions is selected from a group consisting of trapezium, triangle, and rectangle.