Stoves and furnaces – Stoves – Cooking
Patent
1987-04-20
1988-10-25
Dority, Jr., Carroll B.
Stoves and furnaces
Stoves
Cooking
219400, 219386, 34197, 34191, A21B 100
Patent
active
047796049
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention refers to a baking oven comprising a baking chamber into which a carriage can be shifted which carries the baking good on support members, in particular baking plates, and which is stationary during the baking process, noting that air channels extend at both sides of the baking chamber over the height of the baking chamber from top to bottom, which air channels are separated from the baking chamber by partition walls having provided therein air flow openings formed by horizontal slots preferably extending over the whole depth of the support members as measured in shifting direction of the carriage, heated air being blown in alternating direction into the baking chamber by means of a blower.
Such baking ovens comprising a carriage being stationary during the baking process suffer frequently from the drawback, that the baking good distributed over the support members of the carriage is not uniformely baked. Experiments have shown that the reason for this has its origin in the fact that the heated air supplied via one of both air channels, although emerging with high speed from the air flow passages, becomes rapidly decelerated and thus arrives at the baking good with only reduced and moreover--as seen over the cross section of the baking chamber--with ununiform velocity.
SUMMARY OF THE INVENTION
It is an object of the invention to avoid these drawbacks and to improve supply of heated air to the baking good such, that the heated air is supplied with high velocity to the baking good carried by the carriage and the heat supply to the baking good is uniform over the whole baking chamber. This object is achieved by the invention in that channels are provided on the carriage, which, in inserted position of the carriage, adjoin the associated slots and are delimited by baffle plates provided in addition to the support members, air blown into the baking chamber via said slots being guided by the channels in direction to the center of the carriage and onto the baking good. Said channels form in inserted position of the carriage some sort of continuation of the air flow openings provided in the partition wall, so that the air blown into the baking chamber via these openings enters said channels at least for the major part and becomes--corresponding dimensions of the cross section of these channels being provided--not substantially decelerated until this air arrives at the baking good. Surprisingly, it has been found that in this manner the baking good is uniformly subjected to the action of hot air and that the baking good becomes equally baked even if the air flow openings are less uniformily distributed over the surface of the partition walls than are walls usual up till now. Within the spirit of the invention it is now sufficient to provide slot-shaped air flow openings only at those locations where said mentioned channels of the carriage adjoin. Any additional air flow openings provided in the partition walls between said channels have no effect whatsoever.
Preferably and according to the invention, one slot each is arranged immediately below the support members, noting that the carriage carries below each slot a lying baffle plate limiting one of the channels together with the support member located above said baffle plate. Thereby, each support member forms one wall of a channel which results in saving construction material and furthermore in the advantage that the channels extend closely below the support members, so that the heated air flowing within the channels effectively heats the metallic support members (baking plates) for the dough portions to be baked and simultaneously the air is blown from above onto the dough portions located within the corresponding compartment of the carriage.
According to a further development of the invention, the baffle plate and the support member extend in direction of the jet of air emerging from the slot and in parallel relation one relative to the other and in horizontal direction. The cross section of the channel is thus kept
REFERENCES:
patent: 1504854 (1924-08-01), Baker
patent: 1527193 (1925-02-01), Judelson
patent: 2757920 (1956-08-01), Morris
patent: 3261650 (1966-07-01), Stromquist
patent: 3548153 (1970-12-01), Kells
patent: 3658047 (1972-04-01), Happel
patent: 3861378 (1975-01-01), Rhoads et al.
patent: 4029463 (1977-06-01), Johansson et al.
patent: 4039278 (1977-08-01), Denholm
LandOfFree
Baking oven does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Baking oven, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Baking oven will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2263346