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"Bottle Brush" Wrap Finned Heat Pipe or Shared Solution Heat Pipes

IP.com Disclosure Number: IPCOM000022132D
Publication Date: 2004-Feb-25
Document File: 2 page(s) / 35K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that replaces current heat sinking fins with a continuous strip of semi-cut copper. Benefits include a light-weight solution that improves the interface resistance in a heat exchanger.

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“Bottle Brush” Wrap Finned Heat Pipe or Shared Solution Heat Pipes

Disclosed is a method that replaces current heat sinking fins with a continuous strip of semi-cut copper. Benefits include a light-weight solution that improves the interface resistance in a heat exchanger.

Background

Contemporary mobile computer thermal solutions usually use a heat exchanger made up of four parts; a heat spreader block on the processor, a heat pipe, a set of heat sinking fins, and a fan providing airflow to the fins. Current heat sinking fins are solid plates made of copper.

General Description

The disclosed method replaces the copper fin plates used for sinking the heat to the air from the heat pipe with a continuous strip of semi-cut copper (see Figure 1). This continuous strip is rolled around the heat pipe(s) and the cut fins are bent laterally to the axis of the heat pipe. This design improves the thermal resistance between the finned surface and the heat pipe(s) in contemporary solutions. An additional benefit is that the fin structures increase flow mixing, thereby improving the heat transfer into the air. This solution requires a shroud to protect the thin radial fins from damage.

Advantages

The disclosed method is a light weight solution that improves the interface resistance in a heat exchanger, and also promotes more flow mixing and an overall improvement in heat transfer.

Fig. 1

Disclosed anonymously