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Browse Prior Art Database

Lip Exhaust for Ultraclean Workbench

IP.com Disclosure Number: IPCOM000079443D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Crouse, RW: AUTHOR [+2]

Abstract

In modular clean air environmental hoods, for example in a vertical laminar flow hood, a major problem exists in fume exhausting, especially when the hood is used in conjunction with either toxic or corrosive liquids which give off fumes. It is essential that the operator, who may be working in the hood area, be shielded from such toxic vapors and fumes.

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Lip Exhaust for Ultraclean Workbench

In modular clean air environmental hoods, for example in a vertical laminar flow hood, a major problem exists in fume exhausting, especially when the hood is used in conjunction with either toxic or corrosive liquids which give off fumes. It is essential that the operator, who may be working in the hood area, be shielded from such toxic vapors and fumes.

To increase the withdrawal of the vapors from the hood, and to better enable balancing of air flow across the work area, the typical workbench 10, inside a hood, not shown, is provided with a lip exhaust 11 which extends about the periphery of the bench 10. The exhaust may be connected to either the building exhaust system so as to permit the fumes to escape to the atmosphere, or may be suitably filtered to remove the contaminants from the air for recycling, dependent upon the end use of the hood. By extending the exhaust about the entire periphery, a more complete exhausting of the fumes may be obtained.

Additionally, and as illustrated in Figs. 2 and 3, the amount of air exhausted may be adjusted. Adjustably mounted relative to the sheet metal 13, which forms part of the workbench 10, is a panel 11 having a plurality of apertures 12 therein, which communicate with the sidewalls and duct work of the exhaust system. Beneath the adjustable panel is a fixed panel 14, also having a plurality of apertures therein adapted for registration with the apertures 12. By mounting the adju...