Browse Prior Art Database

Self-Acting Drain for Water-Cooled Cold Plates

IP.com Disclosure Number: IPCOM000104081D
Original Publication Date: 1993-Mar-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 79K

Publishing Venue

IBM

Related People

Ellsworth Jr, MJ: AUTHOR [+3]

Abstract

In order to provide the required heat removal rates, future water-cooled cold plates for high-power multi-chip modules may be an integral part of the electronic module housing. For module service, the plumbing connections to the cold plate will have to be broken to remove an electronic module from a system. It is important that all water be drained from the cold plate prior to removal to prevent possible spillage onto exposed electrical components.

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This is the abbreviated version, containing approximately 53% of the total text.

Self-Acting Drain for Water-Cooled Cold Plates

      In order to provide the required heat removal rates, future
water-cooled cold plates for high-power multi-chip modules may be an
integral part of the electronic module housing.  For module service,
the plumbing connections to the cold plate will have to be broken to
remove an electronic module from a system.  It is important that all
water be drained from the cold plate prior to removal to prevent
possible spillage onto exposed electrical components.

      These figures show cross-sectional views of a high-performance
module integral cold plate with the water entering at the inlet port,
101, passing serially through three groups of parallel flow channels,
103, then exiting through the outlet port, 105.  The use of multiple
flow passes make it possible to maintain a high velocity for cooling
effectiveness, while economizing on the volumetric flow rate required
to achieve the desired velocity.  The groups of parallel flow
channels are joined by means of interconnecting plenums at the top,
104, and bottom, 102.

      To remove the module, the water flow is stopped.  Some water
will be trapped in the passage connected to the lower interconnect
plenum, 102, and must be drained.  For this purposes, disclosed is a
self-acting drain valve, 201, located at the bottom of the module
cold plate.  The valve communicates with the water inlet port, 101,
via a drain passage, 202, and the bottom plenum, 102, via anoth...