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Thermal Conduction Module (TCM) with Multi-Part Piston Having a Central Piston or Multiple Pistons and an Outer Collar Separately Movable to Contact a Heat Product Component

IP.com Disclosure Number: IPCOM000037693D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Zumbrunnen, ML: AUTHOR

Abstract

Some circuit modules have a flat chip carrier, an array of chips mounted on an upper surface of the chip carrier, and an overlying supporting structure called a hat that is water cooled. Cylindrical metal pistons contact the upper surface of a chip for conducting heat to the hat. A piston is slidably mounted in a hole in the hat and is spring loaded so that it can adjust to the vertical position and the orientation of the chip.

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Thermal Conduction Module (TCM) with Multi-Part Piston Having a Central Piston or Multiple Pistons and an Outer Collar Separately Movable to Contact a Heat Product Component

Some circuit modules have a flat chip carrier, an array of chips mounted on an upper surface of the chip carrier, and an overlying supporting structure called a hat that is water cooled. Cylindrical metal pistons contact the upper surface of a chip for conducting heat to the hat. A piston is slidably mounted in a hole in the hat and is spring loaded so that it can adjust to the vertical position and the orientation of the chip.

In this thermal conduction module, the piston is made in two parts: a central cylindrical piston 1 contacts a chip 2 near its center and an outer collar 3 contacts the periphery of the chip. The two parts provide good contact with the chip regardless of its shape and orientation. The hat has a corresponding cylindrical hole for the center piston and an annular hole for the collar. Springs are located in the holes to hold the piston parts against the chip. A lateral extension plate can be formed on the lower end of the center piston to extend outwardly into the area under the cylindrical wall in the hat that separates the center hole and the outer annular hole. Alternatively, the extension plate can be part of the collar, as shown in the drawing. Several small pistons can be substituted for the center piston, as is conventional in other modules.

Disclosed anonymously.

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