Browse Prior Art Database

Heat Flux Aligned "Cheese Grate" Punched Heat Exchanger Fins for Heat Pipe Penetrated Heat Exchangers

IP.com Disclosure Number: IPCOM000022133D
Publication Date: 2004-Feb-25
Document File: 2 page(s) / 16K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method that modifies current heat sinking fins by punching the fin plates with "cheese grate" perforations. Benefits include improving the performance of the heat exchanger.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 87% of the total text.

Heat Flux Aligned “Cheese Grate” Punched Heat Exchanger Fins for Heat Pipe Penetrated Heat Exchangers

Disclosed is a method that modifies current heat sinking fins by punching the fin plates with “cheese grate” perforations. Benefits include improving the performance of the 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 mechanically modifies the heat sinking fins. This modification is achieved by punching the fin plates with “cheese grate” perforations; the perforations are placed in very specific orientations to avoid deterioration of the fin efficiency and performance while improving the ability for flow to mix in the cooling channels between fins (see Figure 1). The specific orientation relates to the direction of heat fluxes in the conduction path of the fins. By aligning the direction of the punched cut of the “cheese grate” with the heat fluxes, the ability of the fins to conduct heat is not impacted. The size and depth of the “cheese grate” punches are optimized to maximize the tradeoff between enhanced flow mixing and added pressure drop.

Advantages

The disclosed method is a relatively simple manufacturing procedure that improves the performance of con...