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Bellow Impingement Channel Cooling

IP.com Disclosure Number: IPCOM000109902D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Messina, GT: AUTHOR

Abstract

The packaging and power densities have increased significantly in the last decade. With the increase in power density, a high performance cooling device is required in order to meet the increased cooling demands. This design substantially enhances the multi-chip cooling process in a electronic package. An impingement method coupled with fine grooves is used to maximize performance. As shown in Fig. 1, the spring-loaded piston interfaces with the chip, directing the water jet in close proximity of the chip (heat source). Water enters the inlet (1), and flows along the length of the piston intersects with openings at 90-degree angles.

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Bellow Impingement Channel Cooling

       The packaging and power densities have increased
significantly in the last decade.  With the increase in power
density, a high performance cooling device is required in order to
meet the increased cooling demands.  This design substantially
enhances the multi-chip cooling process in a electronic package.  An
impingement method coupled with fine grooves is used to maximize
performance.  As shown in Fig. 1, the spring-loaded piston interfaces
with the chip, directing the water jet in close proximity of the chip
(heat source).  Water enters the inlet (1), and flows along the
length of the piston intersects with openings at 90-degree angles.
The fluid jet impinges at the bottom section (2) of the piston,
collects in the distribution area (3) and then is forced out through
grooves conveniently machined at the bottom of the floating plunger,
as shown in Fig. 2.  A spring (4) pushes the plunger against the
bottom section of the piston, making positive contact with the chip.
A bellow (5) seals the piston and the hat, forming an enclosed
system.  The water flows outward through the area around the plunger
and the piston and is channeled to the exit port (6).  A rubber
membrane (7) connects and seals the piston with no restriction to the
piston motion.  The membrane is also used to separate the inlet and
outlet areas.