Browse Prior Art Database

Thermally Optimized System Layout for Air-Cooled Desktop Computers

IP.com Disclosure Number: IPCOM000119816D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 111K

Publishing Venue

IBM

Related People

McBride, DJ: AUTHOR [+2]

Abstract

Disclosed is a system layout for air-cooled desktop computers in which the cooling air paths are optimized by means of system components. A 3-D view of the system layout of a desktop computer is shown in Fig. 1a. A conventional axial fan 10 is mounted at the front end of the power supply 11 which is located near the center back of the system box 12. Air blows out of the system through the power supply 11. The high-power processor unit 13 is mounted to the planar board 14 and located in front of the fan 10. The two circuit boards 15 are mounted vertically on the planar board 14 next to the power supply 11. These two boards 15 act as air baffles, forcing air to move along the paths indicated by the arrows in Fig. 1b.

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Thermally Optimized System Layout for Air-Cooled Desktop Computers

      Disclosed is a system layout for air-cooled desktop
computers in which the cooling air paths are optimized by means of
system components.  A 3-D view of the system layout of a desktop
computer is shown in Fig.  1a.  A conventional axial fan 10 is
mounted at the front end of the power supply 11 which is located near
the center back of the system box 12.  Air blows out of the system
through the power supply 11. The high-power processor unit 13 is
mounted to the planar board 14 and located in front of the fan 10.
The two circuit boards 15 are mounted vertically on the planar board
14 next to the power supply 11.  These two boards 15 act as air
baffles, forcing air to move along the paths indicated by the arrows
in Fig. 1b.  Air is sucked into the system box 12 by the negative
pressure produced by the fan 10 through the grilles at the left and
right sides of the system box 12. Air from the right side of the
system box 12 passes through the right feature card assembly 16 which
has four cards plugged horizontally into the right connection card 17
which, in turn, is mounted vertically to the planar board 14.  The
right connection card acts like another air baffle. Air from the left
side of the system box 12 flows through the left feature card
assembly 18 which is plugged into the left connection card 19 which
also acts like an air baffle. The two diskette drives 20 are located
in front of the right feature card assembly 16.  The battery and
loudspeaker 21 are placed in front of the left feature assembly 18.
Two hard files 22 are mounted on the planar board 14 next to the left
connection card 19.  Four air diverters 23 are used to reduce the
unnecessary air turbulence at the corners and hence the acoustics
noises.  The air diverters 23 can be made of sound-absorbing
materials to lower the acoustics noises further.

      The air-flow pattern of this system is depicted in Fig. 1b.
The amount of air flowing through the two feature card assemblies 16
and 18 can be tailored by changing the location and opening size of
the grilles.  Air can also be directed to pass through the diskette
drives 20 and the hard files 22 to enhance the local cooling.  This
is demonstrated in Fig. 1b with b...