Patent ID: 6868622
Filing Date: 2005-03-22
Classification: F26B

Abstract:
1. A conveyor and tunnel oven apparatus for curing products by heat, comprising: a support frame; a conveyor system supported by said frame, said conveyor system further comprising a continuous conveyor belt designed to accommodate the products to be cured and a drive mechanism for effecting controlled movement of said conveyor belt; a tunnel oven upwardly adjacent the conveyor system comprising an insulated housing, a tubular heat exchange system within the housing having a first loop and a second loop positioned above the conveyor belt, a first burner for heating gases within the first loop, a second burner for heating gases within the second loop, a first blower for a effecting movement of heated gases within the first loop of the tubular heat exchange system, and a second blower for effecting movement of heated gases within the second loop of the tubular heat exchange system, said tubular heat exchange system, is positioned above said continuous conveyor belt, wherein the gases are heated within the tubular heat exchange system to a temperature to approximately 1000° F. to approximately 1400° F. and the heat exchange system being located at a distance above said continuous conveyor belt to achieve the generation of heated gases provided by radiant heat outside the tubular heat exchange system of approximately 500° F. to approximately 700° F. at the surface of the continuous conveyor belt accommodating any product being cured by heat thereon; a control system for controlling the operating parameters for the belt speed and generation of heat by the apparatus, whereby heated gases within the tubular heat exchange system provide radiant heat outside the tubular heat exchange system so as to cure any products on the continuous conveyor belt by radiant heat; and wherein the burner is gas fired.