Importance

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Abstract

A low velocity oven seal for use with an elongated oven complex of the type in which articles to be processed are moved longitudinally through the oven. The seal includes an air seal compartment adapted to be aligned with the entry end of the oven complex to form a prefix to the oven complex. In one form of the invention, a blower assembly is mounted on the roof of the air seal compartment adjacent the exit end of the comparment and functions to withdrawn air from the upper region of the air seal compartment adjacent the exit end thereof for delivery to a pair of plenum chambers disposed at either side of the air seal compartment. The air delivered to the plenum chamber is introduced into the lower region of the air seal compartment generally below the path of the articles being processed within the oven complex and this air in turn moves upwardly and toward the exit of the air seal compartment where it is received by the inlet to the blower assembly to complete the air cycle. In another embodiment of the invention, the air is withdrawn from the upper region of the exit end of the air seal chamber by ducting which communicates with the existing exhaust ducting of the convection heating compartment of the oven and the air reintroduced into the air seal through the plenum chambers is supplied to the plenum chambers through ducting connecting with the existing air supply system of the convection heating compartment.

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First Claim