Gas convection oven with egg-shaped heat exchanger tube

Details Gas convection oven with egg-shaped heat exchanger tube Gas convection oven with egg-shaped heat exchanger tube

1984-08-01

1986-11-25

Davis, Jr., Albert W.

Heat exchange

Structural installation

165122, 165177, F24H 308, F28F 102

Patent

active

046243011

ABSTRACT:
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 egg-shaped or 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.

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