Patent ID: 7325480

Claim:
An apparatus for treating and preparing food, the apparatus comprising: a cooking chamber having a lower portion and four sides including a front side and a rear wall extending vertically upward from the lower portion, the cooking chamber defining an atmosphere wherein the food is treated and cooked; a motor-driven ventilation fan configured to circulate the atmosphere in the cooking chamber; a gas burner configured to burn a gas-air mixture, the gas burner having a combustion chamber oriented substantially vertical with respect to the front side and rear wall, wherein the combustion chamber forms a flame directed substantially downward therein when the gas burner is burning the gas-air mixture, and; a heat exchange device in gaseous flow communication with respect to the gas burner, the heat exchange device having a heat exchanger terminal abutting the combustion chamber and being in direct gaseous communication with the combustion chamber and a heat exchange pipe assembly that has at least two pipe strands, each of the pipe strands extending substantially outward from the heat exchanger terminal, wherein the heat exchange pipe assembly extends substantially around the ventilation fan no more than once in a continuous loop.