GAS CONVECTION OVEN

摘要

A gas-fired convection oven for processing food for example having a fan for moving air along a circulatory path over, along and about the food to be processed. A package type gas burner outside the oven is directed into a heat exchanger tube of substantial length extending into the oven. High-temperature exhaust gases are discharged from the burner to be directed through the heat exchanger into the circulatory path of air flowing through the convection oven. Relatively proximate the burner the heat exchanger has a linear portion that is of elliptical cross section, and that portion is oriented with respect to the outlet of the convection blower and walls of the convection blower chamber to draw air over substantially the entire surface area of such portion for maximum cooling/heat exchange function with respect thereto. The outlet from the flow outlet of the heat exchanger is aerodynamic and is positioned proximate the intake to the convection blower wheel whereby the latter tends to draw the hot gases/ products of combustion through the heat exchanger tube.