Browse Prior Art Database

Wire Mesh Safety Construction for a Power Supply

IP.com Disclosure Number: IPCOM000037181D
Original Publication Date: 1989-Nov-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Allard, DJ: AUTHOR [+5]

Abstract

This article describes a screen and steel framing formed in a sandwich combination for use in a power supply design to provide significant open area for air exhaust.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 84% of the total text.

Page 1 of 2

Wire Mesh Safety Construction for a Power Supply

This article describes a screen and steel framing formed in a sandwich combination for use in a power supply design to provide significant open area for air exhaust.

Safety agencies restrict power supply openings on all surfaces of the supply especially the bottom surface thereof. The design disclosed herein allows the use of the power supply bottom surface for air flow exhaust. Because of heat generated inside a CPU, cooling of heat- sensitive components is critical to CPU operation. This design optimizes the cooling properties of the CPU.

The drawing is an exploded perspective view of the framing design of this disclosure. Eighty-three percent of the potential grill area of the power supply bottom A is open. This large open area allows a large volume of air to be exhausted at low velocity by reducing the pressure gradients between the power supply bottom and the CPU exhaust plenum. The large volume of air eliminates hot air trapped within the CPU, thus bringing component temperatures within their operating limits. Also, the low velocity is critical in meeting acoustic requirements.

The large open area would ordinarily tend to result in a weak power supply case. However, power supply case failures caused by torsional and bending moments are effectively prevented by using a triangular reinforcement geometry B on the power supply bottom A. Internal support C assembled together with bottom A form a sandwich.

The requ...