# US 10,502,497 B1 · Constant conductance heat pipe assembly for high heat flux

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- Number: US 10,502,497 B1
- Document ID: US10502497B1
- Status: Granted
- Kind: B1
- Application number: 15/878,786
- Filed: 2018-01-24
- Granted: 2019-12-10
- Earliest claimed: 2015-04-15
- Assignees: Advanced Cooling Technologies, Inc.
- Applicants: Advanced Cooling Technologies, Inc.
- Inventors: Jens E. Weyant; Michael Dechristopher; William G. Anderson
- Web page: https://patentgrep.com/patent/US10502497B1

## CPC

- 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)}
- F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores}
- F28D 15/046: {characterised by the material or the construction of the capillary structure}
- F28D 2021/0021: {for aircrafts or cosmonautics}
- F28D 2021/0028: {for cooling heat generating elements, e.g. for cooling electronic components or electric devices}
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)

## Abstract

A heat pipe assembly that includes at least one axial groove heat pipe and at least one porous media heat pipe. The porous media heat pipe may be embedded into a flange of the axial groove heat pipe, or embedded into a wall of the axial groove heat pipe, or embedded into another bore of the axial groove heat pipe. The evaporator of the at least one porous media heat pipe may be located remotely and can accept a high heat flux, while a condenser of the at least one porous media heat pipe is attached to the axial groove heat pipe.

## Claims

### Claim 1

A heat pipe assembly comprising at least one axial groove heat pipe, and at least one additional heat pipe with a porous wick in an evaporator, the evaporator being located remotely from the axial groove heat pipe and can accept a heat flux of at least 50 W/cm2, a condenser of the at least one additional heat pipe being attached to the axial groove heat pipe.

### Claim 2 (depends on 1)

The heat pipe assembly as recited in claim 1, wherein the porous wick of the at least one additional heat pipe extends along the entire length of the heat pipe assembly.

### Claim 3 (depends on 1)

The heat pipe assembly as recited in claim 1, wherein the porous wick of the at least one additional heat pipe is provided in the evaporator and the at least one additional heat pipe has a different wick in an adiabatic and/or the condenser sections.

### Claim 4 (depends on 1)

The heat pipe assembly as recited in claim 1, where the at least one additional heat pipe is embedded into a flange of the axial groove heat pipe.

### Claim 5 (depends on 1)

The heat pipe assembly as recited in claim 1, where the at least one additional heat pipe is embedded into a wall of the axial groove heat pipe.