Micro-loop heat pipe

• US 20030192669A1
• Filed: 04/10/2002
• Published: 10/16/2003
• Est. Priority Date: 04/10/2002
• Status: Abandoned Application

• Current Assignee: Memsfuel International Corporation
• Original Assignee: Memfuel International Corporation
• Inventors: Wu, Wen-Kuang
• Application Number:
  US10/118,970
• Publication Number:
  US 20030192669A1
• Time in Patent Office: Days
• US Class Current: 165/46
• CPC Class Codes: F28D 15/0241 the tubes being flexible
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: F28D 2015/0225 Microheat pipes

Abstract

A MICRO-LOOP HEAT PIPE, under the condition of no additional acting-force, removes the waste heat from the devices needed heat-dissipation to the well heat-dissipating circumstance by flexible contact. The MICRO-LOOP HEAT PIPE comprising: at least a flexible metal film, which forms a closed space in which fluid may circulate, and has a heat-absorbing zone and a heat-dissipating zone that both are connected by flow path; at least a wick structure by metal net, which is a flexible structure arranged in the heat-absorbing zone, and in which the transferred-into heat may be conducted uniformly; and a working fluid, may be filled into the flexible metal film, absorbs heat in the heat-absorbing zone, vaporizes into gas state, and generates a pressure source that may make the working fluid circulate inside the flexible metal film; the gasified working fluid may be cooled (or heat-dissipated) in the heat-dissipating zone and changed back to liquid state.

Claims

1. A MICRO-LOOP HEAT PIPE, under the condition of no additional acting-force, removes the waste heat from the devices needed heat-dissipation to the well heat-dissipating circumstance by flexible contact, the MICRO-LOOP HEAT PIPE comprising:

at least a flexible metal film, which forms a closed space in which fluids may circulate, and has a heat-absorbing zone and a heat-dissipating zone that both are connected by flow path;

at least a wick structure by metal net, which is a flexible structure arranged in the heat-absorbing zone, and in which the transferred-into heat may be conducted uniformly; and

,

a working fluid, may be filled into the flexible metal film, absorbs heat in the heat-absorbing zone, vaporizes into gas state, and generates a pressure source that may make the working fluid circulate inside the flexible metal film;

the gasified working fluid may be cooled (or heat-dissipated) in the heat-dissipating zone and changed back to liquid state.

2. The MICRO-LOOP HEAT PIPE of the claim 1, wherein the heat-dissipating zone of the flexible metal film has a structure of “

S”

shape that is applied for elongating the flow path of the working fluid within the heat-dissipating zone for enhancing the efficiency of heat-dissipation.

3. The MICRO-LOOP HEAT PIPE of the claim 1, wherein the material of the flexible metal film is a material of high heat-conductance and at least one of silver, copper, and aluminum, etc.

4. The MICRO-LOOP HEAT PIPE of the claim 1, wherein the material of the metal net structure is a material of high heat-conductance and at least one of silver, copper, and aluminum, etc.