Forced hot air type cooking oven

Claim 1

An oven comprising a hollow casing, a partition plate in said casing dividing the same into a front heating chamber and a rear chamber, said partition plate providing lateral air passages between the front and rear chambers, said partition plate being provided with an opening therein, a combustion chamber, means in said combustion chamber for producing heated gas, means for conveying the heated gas from the combustion chamber to the front chamber for discharge adjacent said opening, blower means in said rear chamber facing said opening to suck the heated air into the rear chamber and expel the heated air into the front chamber via said lateral air passages, said casing including a rear wall at the back of the rear chamber provided with a main discharge opening at the upper end of the rear chamber and two subsidiary openings at the level of the lower end of the blower means, said subsidiary openings being at laterally opposite sides of the blower means, at least one opening leading into said rear chamber for exhaust of gases from said rear chamber, and discharge means for conveying the thus heated gases externally of the oven, said discharge means comprising an exhaust pipe extending upwardly, and a removable inner tube slidably mounted in said exhaust pipe and having an inlet in communication with the exhaust opening in said casing.