Patent ID: 6044833
Filing Date: 2000-04-04
Classification: A21B

Abstract:
A baking oven, comprisinga baking chamber (8),a re-circulation air heater in the baking oven which comprisesa burner (10) with a combustion chamber (13), anda heat exchanger (12) disposed downstream of the combustion chamber (13) in the way of the re-circulation air,wherein the heat exchanger (12) is a cross-counterflow heat exchanger (12) having serpentine heat transfer tubes (15) which are connected to a flue gas supply channel (14) connected to the combustion chamber (13) and to a flue gas discharge channel (18), andwherein the cross-counterflow heat exchanger (12), which substantially comprises the flue gas supply channel (14), the heat transfer tubes (15) and the flue gas discharge channel (18), is fixed only at one fixing spot (34) in the baking oven, wherein the cross-counterflow heat exchanger is free to move relative to the fixing spot in each coordinate direction of a Cartesian coordinate system.