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Browse Prior Art Database

Air Intake/Exhaust Apertures for Electronic Enclosures

IP.com Disclosure Number: IPCOM000110434D
Original Publication Date: 1992-Nov-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 66K

Publishing Venue

IBM

Related People

Varmha, R: AUTHOR

Abstract

The air intake/exhaust openings in a metallic panel of the cover or cabinet of data processing consists of narrow orthogonal slots to reduce electro-magnetic radiation without adversely affecting cooling air flow.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Air Intake/Exhaust Apertures for Electronic Enclosures

      The air intake/exhaust openings in a metallic panel of the
cover or cabinet of data processing consists of narrow orthogonal
slots to reduce electro-magnetic radiation without adversely
affecting cooling air flow.

      Referring to the figure, slots 10 are cut through the
electronic enclosure cover 11, to permit air flow to cool electronic
components within the box.  These louver slots are laid out in a
perpendicular pattern to minimize magnetically induced shield current
leakages which will result in undesirable electronic noise.

      The level of leakage is maximum if the direction of the induced
currents is perpendicular to the slots and minimal if the current
flow is parallel to the slots.  The alternating perpendicular slot
layout is more efficient in suppressing electromagnetic noise
generated by components within the cabinet than if the slots were cut
along the full length of the air intake/exhaust opening.

      Disclosed anonymously.