Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Contamination Free Cooling Scheme for Optical Drives

IP.com Disclosure Number: IPCOM000116639D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Kim, SJ: AUTHOR [+3]

Abstract

A method for cooling an optical drive without contaminating an optical elements is disclosed. Heat is transferred from the electronic and opto-mechanical components to the cold plate through conduction.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 59% of the total text.

Contamination Free Cooling Scheme for Optical Drives

      A method for cooling an optical drive without contaminating an
optical elements is disclosed.  Heat is transferred from the
electronic and opto-mechanical components to the cold plate through
conduction.

      Unfiltered air blowing across the drive contaminates the
optical elements and/or the optical media.  The contamination coats
the optical elements within the drive and causes permanent read/write
errors and possibly data integrity problems.  This contamination
problem must be solved on optical drives in order to have a reliable
product.

      This idea uses a conduction heat transfer mechanism to transfer
heat from the heat generating components to the outside of the drive
whereby it is removed by convection to the unfiltered cooling air.
The exterior case of the drive is a sealed heat sink which prevents
contamination within the drive.  The drive might be enclosed in a
duct slightly larger than the drive through which the cooling air is
flowing.  Alternately, if space is a problem, the cooling air can be
directed at the exterior of the drive without this shell.  The drive
itself is a self contained box and does not have any openings for the
air flow.

      One aspect of this article is to cool the microelectronic
components on the printed circuit board (PCB).  A PCB with high
thermal conductivity is highly recommended for this application and
is well known in the industry.  The condu...