Abstract: An airflow distribution system for discharging air from a thin plenum chamber into a relatively larger space such as a discharge duct or the work chamber of an industrial oven. A distribution plate separating the chambers has discharge openings arranged in pairs, having diagonally oriented louvers sufficiently closely spaced to direct individual air streams toward one another where by combine as a resultant air stream flowing transversely outwardly from the distribution plate. The louvers are illustrated as circular or rectangular tabs partly punched from the plate in forming the discharge openings and are adjustable by bending to vary the direction and volume of the resultant air streams. Among the examples disclosed are industrial ovens and air discharge ducts.

Abstract: An airflow distribution system for discharging air from a thin plenum chamber into a relatively larger space such as the work chamber of an industrial oven. A distribution plate separating the chambers has discharge openings arranged in pairs, having diagonally oriented louvers sufficiently closely spaced to direct individual air streams toward one another where they combine as a resultant air stream flowing transversely outwardly from the distribution plate. The louvers are illustrated as circular or rectangular tabs partly punched from the plate in forming the discharge openings and are adjustable by bending to vary the direction and volume of the resultant air streams. The example disclosed is an industrial oven.

Abstract: An industrial oven having a housing defining a work chamber into which products to be treated by the oven may be placed includes a duct system communicating with a blower wheel mounted in the work chamber for communicating air blown by the wheel to the work chamber. The industrial oven further includes the improvement of a blower scroll consisting of a plurality of plates mounted about the blower wheel in an involute configuration. The blower plates define a plurality of outlets for uniformly directing air from the wheel to the duct system.