Baking oven

Details Baking oven Baking oven

1978-12-21

1980-07-29

Reynolds, B. A.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219395, 219396, 219398, 219399, 219405, H05B 300

Patent

active

042152666

ABSTRACT:
A baking oven having a baking chamber preferably divided into a plurality of baking compartments disposed in a vertical stack separated from one another by a deck and enclosed by a cabinet having an access door. Each such deck comprises top and bottom plates with a space therebetween and a heating element therein spaced from said plates. The deck is provided with a narrow vent to said space across its width adjacent the access door. A sensing bulb or other temperature sensing means of a thermostat is located in the said space with the sensing tip of the sensing means being substantially at said vent. The top surface of the bottom plate is selectively blackened and the heating element is located to provide progressively less heating toward the back of the baking compartments. The top side of the baking chamber is defined by a like deck and the bottom side of the baking chamber is defined by a similar deck which does not have a blackened lower plate.
In operation the heating element of the intermediate deck heats the lower portion of the upper baking compartment to a baking temperature gradient and the upper portion of the next lower baking compartment to a higher browning temperature gradient due to the selectively blackened surface of the bottom plate. The heating element of the top deck heats the upper portion of the uppermost compartment to a browning temperature gradient and the heating element of the bottom deck heats the lower portion of the lowermost compartment to a baking temperature gradient. The thermostats control both these temperature gradients and are promptly responsive to oven door opening due to cool air immediately contacting the sensing means through said vent to maintain uniform oven temperature gradients even though said access door is repeatedly opened during the baking cycle.
In a single baking compartment embodiment, the intermediate decks are omitted and the top and bottom decks heat the upper portion of the baking compartment to a browning temperature gradient and the lower portion of the compartment to a baking temperature gradient and the heating is controlled by the thermostats as described.

REFERENCES:
patent: 1392802 (1921-10-01), Serrell
patent: 1490243 (1924-04-01), Thornton, Jr.
patent: 1612065 (1926-12-01), Serrell

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