US1514707A - Gas burner - Google Patents

Description

L. KIRSCHMANN GAS BURNER Filed Au 14, 1922 JM-t Patented Nov. ll, 1%24.

LEOPOLD KIRSCHMANN, OF I-IALENSEE, GERMANY.

GAS BURNER.

Application filed. August 14, 1922. Serial No. 581,769.

To all whom it may concern:

Be it known that I, Lnoronn KmsoHMANN, a citizen of the German Republic, residing at Halensee, Germany, have invented cer tain new and useful Improvements in Gas Burners (for which I have filed an application for patent in Germany on the 23rd of April, 1922), of which the following is a specification.

This invention relates to a gas burner the construction of which is improved in such a manner that without admission of air for combustion a complete combustion of all gas particles with a non-luminous and a nonsoot-producing blue flame is effected owing to the peculiar configuration of the burner head.

lVith the Bunsen burners which are actually used for gas ovens of any type an air inlet is arranged at the burner end of they gas tube behind the gas cook through which air flows into the tube to admix with the gas before the same flows out through the burner head. A pointed flame, or if the burner head has several borings, a crown of pointed flames is produced. It is generally supposed that the addition of combustion air increases the heating power of the flame and reduces the consumption of gas. This is however not the case as I have found out by experiment.

This invention has for its object a gas burner which is not only very economical in use but presents further the advantage that the back-burning of the flame in the tube, which at present frequently happens as soon as the gas cock is partly shut off to decrease the gas supply, is absolutely avoided with all the inconveniencies resulting from it.

An embodiment of the invention is shown by way of example in the accompanying drawing, wherein:

Fig. 1 shows the improved gas burner in longitudinal section.

Fig. 2 is a plan view of the same.

Fig. 3 shows the burner in side elevation on a smaller scale.

The gas tube 1 is open at the upper end but has no air inlet as usual. In this open end of the gas tube 1 the burner 52 is arranged which is preferably made of soap stone (steatite) or other equivalent material. This burner 2 is preferably of pyramid shape, but it could be also of cone shape or spherical-cylindrical shape. In the burner 2 a convenient number of very fine borings 3 of about 0.3 to 0.4 mm. diameter are arranged which stand at an angle to the axis of the burner. In the form of construction shown the borings are arranged in two circles concentric to the point of the burner so that between the orifices of every two borings 3 of the inner circle and of the outer circle which are in alignment, an orifice of a boring of the outer circle is situated. Owing to this arrangement of the orifices of the borings a star-shaped flame is produced (Fig. 2) as the gas jets flowing out of the two orifices in alignment combine to form a long flame, the gas jets flowing out of the intermediate orifices of the outer circle producing only a short flame.

The flames which, as shown in Fig. 3, are upwardly directed at an angle are flattened by the surface to be heated which stands only at a short distance above the point of the burner as can be seen from Fig. 1. There is no danger that the flame can be thrown back into the gas tube or extinguish nor that the burner or the heated surface be blackened by soot. The fine gas particles which burn with a blue flame, combine to a flame which burns calmly, comes in close contact with the surface to be heated and licks the same upon a much larger extent than is the case with burners of known construction. As the gas pressure is not artifi-' cially increased by the addition of combustion air a considerable saving of gas is ensured.

The improved gas burner can burn with a quite small flame, the admission of gas being almost entirely shut off, as no backburning of the flame has to be feared and a further advantage is that by the quiet flame without pressure the objects heated do not burn so rapidly as is the case at present.

Tests have proved that this gas burner saves much more gas than could be expected.

I claim A gas burner for heating and cooking in which the gas is admitted to the burner without previous addition of air comprising a pyramidal burner tip with narrow bores radiating from the centre so that in the at a greater angle than the bores of the inner outer surface of the burner tip tW0 concencircle. 10 trio circles of gas outlet openings are formed, In testimony whereof I afiix my signature the gas outlet openings of the inner circle 1n presence Of tWO Witnesses.

being situated in the same vertical planes LEOPOLD KIRSCHMANN. as every second gas outlet opening "of the Witnesses: outer circle and the bores of the outer cir- FERD NUSCH,

cle being inclined to the axis of the burner W. WORTH.

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