Browse Prior Art Database

Sinusoidal Heat Sink Fins

IP.com Disclosure Number: IPCOM000127731D
Original Publication Date: 2005-Sep-12
Included in the Prior Art Database: 2005-Sep-12
Document File: 3 page(s) / 885K

Publishing Venue

IBM

Abstract

Obtaining more heat dissipating area per heat sink in a smaller volumetric space Via sinusoidal heat sink fins

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 3

Sinusoidal Heat Sink Fins

  Heat sinks can be made of copper or aluminum or any other material with heat dissipation qualities. There are thin fins which are normally mechanically attached by soldering to the top of the heat sink base these fins are normally straight. The invention is to alter the shape of the heat sink fins in one of two ways. The first is to effectively vertically shorten the fins by introducing the sinusoidal shape in the vertical axis of the fin. Thus for a given length of fin the area of the fin is the same as for the straight fin as the sinusoidal fin albeit the sinusoidal fin takes up less vertical space then the straight fin - see the following picture:
Main Idea

1

Page 2 of 3

Alternately the fin can take on a sinusoidal shape in the horizontal axis shown in the next picture where the heat sink is viewed from the top.

2

[This page contains 1 picture or other non-text object]

Page 3 of 3

(The sinusoidal shape is important as it is a natural wave propagating shape and allows the air to flow over it as effortlessly as the straight fin. The fin sinusoidal shape can be as subtle as half an amplitude and a low frequency or incorporate a couple of full wave shapes being of higher frequency and amplitude.)

3

[This page contains 1 picture or other non-text object]