Browse Prior Art Database

Flow Interrupt Detector

IP.com Disclosure Number: IPCOM000089086D
Original Publication Date: 1977-Sep-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

Arnhart, JC: AUTHOR [+2]

Abstract

In many applications of jet cooling, for example, water or air cooling of semiconductor packages or modules, reliance is placed on uninterrupted flows. In electronic application of machines employing large numbers of semiconductor circuit chips, thousands of jet flows may be required for cooling, with a single jet failure conceivably allowing a chip to overheat with interruption of operation.

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Flow Interrupt Detector

In many applications of jet cooling, for example, water or air cooling of semiconductor packages or modules, reliance is placed on uninterrupted flows. In electronic application of machines employing large numbers of semiconductor circuit chips, thousands of jet flows may be required for cooling, with a single jet failure conceivably allowing a chip to overheat with interruption of operation.

Shown is a simplified means for detecting single failures which enables machine shutdown and repair before a chip is harmed or destroyed. In this system, check balls are provided in inclined nozzle bores of a light transmitting medium between limit pins which provide free fluid flow with clean nozzles. Fluid flow pressure maintains the ball against the limit pin at the top of the inclined nozzle bore. When a nozzle or jet becomes clogged to prevent fluid flow, the check balls roll down against the limit pin at the bottom of the nozzle bore to break a light beam between a light source and a sensor, which can initiate an alarm. If required, the row and column of nozzles can be appropriately identified. On detection of a flow interrupt, the machine can be shut down for unclogging of the nozzle.

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