DE1065157B - Vertical boiler with a combustion chamber for solid or liquid fuel or for both fuels at the same time - Google Patents

Description

GERMAN

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F24d

Sch 21309 X / 36c

REGISTRATION DATE: DECEMBER 21, 1956

NOTICE
DECANNATION
AND ISSUE OF THE
EDITORIAL: SEPTEMBER 10, 1959

The invention relates to an upright boiler with a furnace for solid or liquid fuel or for both fuels at the same time and with, .. a secondary chamber connected to the combustion chamber for an oil burner insert.

According to the invention, a boiler of this type is characterized in that the approximately hollow cylindrical or a similarly designed secondary chamber is connected to the outside air and the oil burner insert is equiaxed has arranged in a tube of the auxiliary chamber burner tube which contains the nozzle tube and merges into an enlarged fuel mixing chamber at the bottom, the diameter of the tube being smaller than the inner diameter of the sub chamber and the diameter of the fuel mixing chamber smaller than the diameter of the tube in the secondary chamber is so that arranged by a top on the oil burner insert Combustion air entering the nozzle in the space between the inner wall of the secondary chamber and the outer wall of the pipe in the secondary chamber, which runs parallel to this, to its lower, free end flows, is deflected by this and between the inner wall of the aforementioned tube and the outer wall of the mixing chamber is heated and at the same time it flows upwards in a cooling manner, the Burner tube applied to the outside and enters this at the top.

Due to the path forced on the combustion air, this is carried along with the operation of the boiler liquid fuel is not only heated, which ensures complete combustion of the oil, but as a result of the deflections, the flame noise of the burner is broken, which makes it soundless from the outside and pulsation-free heating operation of the boiler, which is particularly important when Starting the burner has a beneficial effect.

In order to protect the oil burner insert from contamination when operating the boiler with solid fuel protect, a non-return valve can be arranged in the supply nozzle for the combustion air, which when operating the boiler with solid fuel as a result of the reversal of the direction of flow ■ the combustion air closes automatically, which means that the oil burner insert is absorbed throughout- ' the chamber and thus a protective one around it. Forms air cushion. In operation with liquid fuels this non-return flap also closes the air inlet when the burner is not in use and This prevents heat losses from the boiler that would otherwise occur as a result of drafts to the chimney.

In the drawing is an embodiment of the- ,, Subject of the invention shown schematically. It '.. shows

Fig. 1 is a vertical center section through a standing boiler with a furnace

for solid or liquid fuel or for both fuels at the same time

Applicant: Emil Schwörer, Vilters, Sargans (Switzerland)

Representative: Dipl.-Ing. A. Trautmann, patent attorney, Berlin-Zehlendorf, Prinz-Handjery-Str. 68

Claimed priority: Switzerland of December 31, 1955

Emil Schwörer, Vilters, Sargans (Switzerland), has been named as the inventor

standing boiler with the combustion chamber and the auxiliary chamber, with an oil burner insert, and

FIG. 2 shows a horizontal section through this boiler along the line II-II in FIG. 1.

The standing boiler has a vertical furnace 2 for burning solid and liquid Fuels. It denotes 4 the loading opening and 5 the stoking and cleaning opening of this furnace. The combustion air for solid fuels is fed to the combustion chamber 2 through a grate 6. That, for example Water to be heated for a collective heating system is located in a via the Height of the fire chamber extending, lower water jacket 8 and in a coaxial in this arranged heating bell 21 and in an upper water jacket 22 and in a row of approximately vertical Tubes 23, in the present example three (Fig. 2). The return water from the radiators occurs at the bottom through the nozzle 15 in the lower jacket 8 of the boiler, -during the heated. Water the boiler about halfway up. 16 leaves. A thermal insulation jacket 20 surrounds the whole boiler. The flue gases escape in the direction of the arrow through the 'Gäsabnahms-' marked 3 Opening. The flue gases sweep through a between., The inner wall of the lower water jacket 8 and the Outer wall of the heating bell 21 created space 35 and pass through a flue gas nozzle 10 in the chimney.

909 627/120

Claims (6)

For the operation of the boiler with liquid fuel, an oil burner insert is provided in a cylindrical secondary chamber surrounded by the upper water jacket 22, which is inserted as a whole into this secondary chamber and is fixed with a flange 24 on a flange 25 of the boiler. This oil burner insert contains the nozzle tube 28 in a burner tube 27. The burner tube 27 is surrounded at a distance by an equiaxed tube 30, which in turn is arranged at a distance from the inner wall of the secondary chamber and thus to the inner wall of the upper water jacket 22. At the front or lower end of the burner tube, a fuel mixing chamber is provided which is delimited by a hollow cylinder 31 which, by its outwardly bent free end 32, is supported in a flange-like manner on an annular flange 26 protruding into the lower end of the secondary chamber. The arrangement is such that from the outside, for example with the help of a fan, not shown, combustion air for the liquid fuel first passes through a non-return valve 33 (above) into an annular cylindrical space 34 which surrounds the tube 30, and from there flows to its lower free end and around this.herum between the inner wall of the tube 30 and the outer wall of the mixing chamber cylinder 31 heats up and at the same time cools it along the burner tube 27 into the latter and into the mixing chamber for combustion, as indicated by arrows tube 30 closed at the top, an air bag which has one therein a Flame monitor 1 (top) arranged as a photocell is protected from damage. When operating the boiler with liquid fuel, the path of the flue gases is the same as when operating with solid fuels, i. That is, the flue gases pass through the exhaust opening 3 into the space 35 (below) and in the process heat the water in the lower water jacket 8, which flows into the upper jacket 22. The combustion air is mainly heated by the mixing chamber cylinder 31, which is slightly red-hot when the heater is in operation, and at the same time prevents overheating of the water and the associated formation of vapor bubbles in the water jacket at this point. When the boiler is operated with solid fuels, the non-return valve 33 is automatically closed immediately after the start of firing as a result of the reversal of the direction of flow of the combustion air. A heat-insulating air cushion is formed in the entire upper chamber and thus around the oil burner insert, which mainly protects it from contamination. The boiler is immediately ready for operation for one or the other or for both types of combustion, without having to carry out any conversion work. So z. B. Waste can easily be burned in parallel to the oil operation. If a malfunction suddenly occurs in the oil firing, it is not necessary to call in a specialist immediately, as solid fuels can continue to be used for heating. Instead of, as shown, above the combustion chamber 2, the secondary chamber with the oil burner insert could also open horizontally into the combustion chamber. ·> ■ Patent claims: 1. Standing boiler with a combustion chamber for solid or liquid fuel or for both Fuels at the same time and with one to the ίο connected auxiliary chamber for combustion chamber an oil burner insert, characterized in that the approximately hollow-cylindrical or similarly shaped Secondary chamber is connected to the outside air and the oil burner insert is equiaxed in a tube (30) of the secondary chamber arranged burner tube (27) which the nozzle tube (28) and merges at the bottom into an expanded fuel mixing chamber (31), the Diameter of the tube (30) smaller than the inner diameter of the secondary chamber and the diameter the fuel mixing chamber (31) is smaller than the diameter of the tube (30) in the secondary chamber is so that entering through a nozzle arranged at the top of the oil burner insert Combustion air in the space (34) between the inner wall of the secondary chamber and the to this parallel outer wall of the tube (30) in the secondary chamber to its lower free End flows, is deflected by this and between the inner wall of the aforementioned tube (30) and the outer wall of the mixing chamber (31) heats up and at the same time cools them down flows at the top, the burner tube (27) acts on the outside and enters this at the top. 2. Boiler according to claim 1, characterized in that the supply port for the combustion air a non-return valve (33) is arranged, which is fixed when the boiler is in operation Fuel closes automatically. 3. Boiler according to claim 1, characterized in that the upper part of the tube (30) in the Secondary chamber for the formation of an air bag lying outside the combustion air path is closed at the top and contains an optical flame monitor (1). 4. Boiler according to claim 1, characterized in that the secondary chamber of an upper one Boiler water jacket (22) and this is enclosed by a water heater (13) which is of starting from the upper part of the boiler water jacket with the one surrounding the combustion chamber lower boiler water jacket (21) connected circulation pipes (23) is penetrated. 5. Boiler according to claim 1, characterized in that the tube (30) in the secondary chamber suspended and attached to a flange at the top of the boiler, while, the burner tube (27) over the mixing chamber wall (31) on one at the lower end of the secondary chamber supported in this protruding annular flange (26). 6. Boiler according to claim 1, characterized in that the secondary chamber is perpendicular to at the top or horizontally to the side of the combustion chamber (2) is arranged confluent. 1 sheet of drawings 909 627/120 9. 59