Low-cost nano-heat pipe

Patent metadata

Field	Value
Publication number	US-10962296-B2
Application number	US-201916241228-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Mar 30, 2015
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A method of fabricating a heat pipe may include providing a first material as a body section. The method may include stamping or etching the body section to include the cavity. A portion of the body section may constitute a wall of the cavity. The method may include stamping or etching the wall of the cavity to provide a set of corrugations on a portion of the wall of the cavity. The method may include forming an opening in the wall of the cavity. The method may include attaching a lid over the cavity. The lid constituting at least a portion of a hermetic seal of the cavity. The method may include attaching a cover to the body section approximately adjacent to the opening in the cavity. The method may include attaching a valve to the body section approximately at the opening to the cavity.

First claim

What is claimed is:

1. A method of fabricating a heat pipe, the method comprising:
providing a first material as a body section;
stamping or etching the body section to include a cavity,
a first portion of the body section constituting a wall of the cavity;
stamping or etching the wall of the cavity to provide a set of corrugations on a portion of the wall of the cavity;
forming an opening extending through a second portion of the body section, the opening having a first end provided in a bottom surface of the body section and a second end provided in a side surface of the body section, the opening having a bend between the first and second ends, such that the second portion of the body section surrounds the opening,
the opening being configured to receive a fluid;
attaching a lid over the cavity,
the lid constituting at least a portion of a hermetic seal of the cavity;
attaching a cover over the cavity; and
attaching a valve to the body section approximately at the second end of the opening.

2. The method of claim 1 , further comprising:
evacuating the cavity through the opening and the valve; and
partially filling the cavity with the fluid through the opening and the valve.

3. The method of claim 1 , further comprising:
manipulating the cover to form a hermetic seal of the opening.

4. The method of claim 1 , where stamping or etching the wall of the cavity to provide the set of corrugations on a portion of the wall of the cavity further comprises:
stamping or etching the wall of the cavity to produce the set of corrugations using a diamond stamping or etching tool.

5. The method of claim 1 , where each corrugation, of the set of corrugations, is less than approximately 0.75 millimeters in height and separated from one or more other corrugations, of the set of corrugations, by less than approximately 0.1 millimeters.

6. The method of claim 1 , where stamping or etching the wall of the cavity to provide the set of corrugations further comprises:
positioning the first material in a thermally insulated enclosure associated with providing temperature control; and
stamping or etching the wall of the cavity to provide the set of corrugations after positioning the first material in the thermally insulated enclosure.

7. The method of claim 1 , further comprising:
affixing a heat generating module to the lid.

Assignees

• Infinera Corp

Inventors

• Osenbach John W
• Tang Jie
• Messenger S Eugene
• Coronati John

Classifications

• H10W40/73

  for cooling by change of state · CPC title

• H10W40/037

  Assembling together parts thereof · CPC title

• B23P2700/09

  Heat pipes · CPC title

• F28D15/0233

  the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence) · CPC title

• B23P15/26

  heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)} · CPC title