Brewing pan oven with a channel leading into the heating duct for the introduction of cold air

Description

[0001] Brewing pan oven with a channel opening into the heating channel for introducing cold air. In brewing pan ovens, it is necessary to During the brewing process, the fire should be quickly stoked and then extinguished. Furthermore, overheating often occurs when emptying the pan. of the pan bottom.

[0002] In order to avoid the need for steaming of the fire or for the glowing fuel to be pulled off the grate during operation, It has already been suggested for such maids to attach a heating channel to the pan's flue, which is connected to the chimney via a flue. to connect to a cold air duct that can be closed by a flap, through which the cold air flows when the exhaust duct is closed and the flap is opened. is forced to flow around the boiler into the combustion chamber, thereby cooling the boiler walls. With these known devices, However, the cooling air passing through the heating flue is either directed over the grate into the combustion chamber or drawn downwards through the grate, so that the The heat present in the combustion gases is then lost.

[0003] In the oven that forms the subject matter of the invention, when the heating of the pan is interrupted by letting in the The cold air stream into the heating channel continues the combustion on the grate in the same way and the heat generated in the combustion chamber is used for Water heating is utilized. To achieve this, the new brewing kettle oven has a heating channel located behind the kettle. A water heater or steam generator is installed in the adjacent exhaust, and the heating channel leads from the combustion chamber to the brewing pan. and the rising flue leading from the combustion chamber to the water heater can be alternately shut off by a shut-off device. Furthermore, a A connecting channel leading from the heating channel to the ash chamber, which can be closed by a shut-off device when the pan is heated, is provided. through which, with the heating channel closed and the cold air inlet open, the cold air, after circulating around the brewing pan, enters the system as combustion air. The ash chamber is guided. By adjusting the shut-off devices, which can be conveniently coupled together, the flow of combustion gases is thus controlled. the pan channel is diverted to the rising channel and thus directed to the water heater for heating.

[0004] The drawing shows the new brewing pan oven in one embodiment in section.

[0005] The firebox a of the furnace has a fire door in both the rear wall and the ceiling. The former leads into an annular channel h, through which The combustion gases are directed around the brewing pan, the latter into a rising channel s, in which a water preheater or steam boiler c is installed. At the A flap d is suspended on the rear wall of the firebox; through which either one or the other fire hatch can be closed. Furthermore, in the ceiling of the furnace, immediately next to the point where the ring channel h enters the rising channel s, there is a channel for the entry of Cold air is provided. Air can enter the heating flue through this channel when the flap is folded down and the exhaust opening is closed. The ring channel is blocked in the chimney. To direct this airflow under the flue, a channel is located immediately behind the fire bridge of the firebox. Another opening k leading to the ash chamber is provided, which is usually closed by a flap. All flaps d, e and f can be coupled together by suitable means, so that when one is adjusted, the other two are also adjusted.

[0006] If the pan is to be heated, all flaps d, e, f are in the horizontal position shown in solid lines. The combustion gases rising from the grate a flow through the heating channel h, brushing the bottom and side walls of the pan and reaching finally into the rising duct to the water preheater or steam boiler c.

[0007] If the flow of the pan is to be suddenly interrupted, the caps are folded into the vertical, dashed position. Since With the fire port in the rear wall of the combustion chamber closed, the combustion gases must now flow directly to the preheater via the riser channel. c flow = As a result of the switching of the two flaps e and f, cold air is simultaneously drawn through the channel into the Ile and through the Opening k leads under the grate. The heat stored in d,:n heating channels thus serves to preheat the air passing through the grate into the '1'euerkamirier. Combustion air flows in. From the combustion chamber, the flue gases flow upwards through the riser and are used to heat the boiler. This is exploited. Since the pan is exposed to cold air on the outer walls and the base is no longer heated, the pan can be emptied immediately. become.

[0008] Switching on the pan heater after the operating break is just as easy as switching it off, by simultaneously flipping four Flaps-d, e--urid f. Of course, the flaps can also be replaced by gates or similar shut-off devices.

Claims

[0009] PATENT CLAIMS: i. Brewing pan oven with a water heater installed behind the pan heating channel in the exhaust or Steam generator and a channel opening into the heating channel for the introduction of cold air, characterized in that the combustion chamber The heating channel (h) leading to the brewing kettle and the rising channel (s) leading from the combustion chamber to the water heater alternately through a shut-off devices (d) are lockable and a shut-off device (f) leads from the heating channel to the ash chamber when the pan is heated. a lockable connecting channel (k) is provided, through which, when the heating channel is closed and the cold air inlet is open, the cold air flows to The brewing pan is surrounded by combustion air, which is then directed into the ash chamber. - Brewing oven jzach _ Claim t, characterized in that The shut-off valves (e, d and f) for the flue gases and for the combustion air are coupled together.