Patent ID: 8444462

Claim:
A fume hood for an exhaust system, the fume hood comprising: a recess-defining portion having a front wall and a top wall, the top wall extending from a top edge of the front wall, the front and top walls bounding an interior space of the recess-defining portion; a first side wall extending from first side edges of the front and top walls; a second side wall extending from second side edges of the front and top walls, the first and second side walls bounding said interior space; a first jet-generating portion located at the front wall near a bottom edge thereof; a second jet-generating portion located at the first side wall near a bottom edge thereof; and a third jet-generating portion located at the second side wall near a bottom edge thereof, wherein each of the jet-generating portions is constructed to form both a first planar jet directed in a substantially horizontal direction and a second planar jet directed in a substantially vertical direction along a common section of the respective wall, the first through third jet-generating portions include a common plenum, which extends along the bottom edges of the front and side walls and has a plurality of openings therein for forming said first and second planar jets, the bottom edge of the front wall has corners where the front wall intersects with the first and second side walls, and portions of the common plenum in said corners are beveled or curved in plan view.