Browse Prior Art Database

Angled Impingement Channel and Heat Sink for Reduced Channel Pressure Drop

IP.com Disclosure Number: IPCOM000118765D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Chrysler, GM: AUTHOR [+3]

Abstract

Disclosed is a method of reducing the pressure drop in the impingement channel for an impingement heat sink mounted on a cross-flow card, when the heat sink size limits the impingement channel dimension.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 86% of the total text.

Angled Impingement Channel and Heat Sink for Reduced Channel Pressure
Drop

      Disclosed is a method of reducing the pressure drop in the
impingement channel for an impingement heat sink mounted on a
cross-flow card, when the heat sink size limits the impingement
channel dimension.

      For a given book package, the vertical distance between the
card and the book cover, the total package height, is fixed.  As the
height of the impingement heat sink increases, the vertical dimension
of the impingement channel must decrease.

      Fig. 1 presents a side view of a typical split book package
with a large impingement heat sink.  The space allocated to the
impingement channel is very small and will result in an excessively
high pressure drop.  In the area around the heat sink are other heat
dissipating elements which are not shown.

      The modified impingement channel and heat sink, designed to
achieve a balance between optimal thermal performance and pressure
drop, is shown in Fig. 2.  The heat sink has a tapered fin height
profile resulting in a total surface area which may be the same, or
more, or less than the heat sink in the original package but
resulting in a much larger cross sectional area for the impingement
air flow and, therefore, a smaller channel pressure drop.  The angled
heat sink coupled with the enlarged impingement channel can be used
for both pin fin heat sinks and plate fin heat sinks.

      Another option available is to ext...