DE293784C

DE293784C -

Info

Publication number: DE293784C
Application number: DENDAT293784D
Authority: DE

Description

KAISERLICHES' ./k IMPERIAL './k

PATENTAMT.PATENT OFFICE.

PatentschriftPatent specification

.- M 2.93784-KLASSE 4c. GRUPPE.- M 2.93784-CLASS 4c. GROUP

Patentiert im Deutschen Reiche vom 23. Juli 1914 ab.Patented in the German Empire on July 23, 1914.

Da bei den bekannten Gassauerstoffbrennern, die hauptsächlich zum Betriebe von Scheinwerfern Verwendung finden, der Sauerstoff und das Brenngas durch je ein besonderes Ventil abgesperrt werden, kann es leicht vorkommen, daß der Brenner bei nicht gleichzeitigem Schließen beider Ventile durch die alleinige Zuführung von Brenngas verrußt. Auch liegt bei den bekannten Einrichtungen ίο dieser Art die Möglichkeit vor, daß der ausströmende Sauerstoff durch Unregelmäßigkeiten beim Betriebe des Brenners in die Gasleitung übertritt und hier mit dem Gas ein explosionsfähiges Gemisch bildet.
\ Die Erfindung bezweckt die Vermeidung dieser Übelstände und gleichzeitig die ständige Aufrechterhaltung eines günstigen Mengenverhältnisses zwischen Brenngas und Sauerstoff. Dieser Zweck wird dadurch erreicht, daß der Sauerstoff unmittelbar vor oder in der Brennermündung durch eine Strahldüse geleitet und der dabei in dem die Strahldüse umgebenden Mantelraum auftretende Unterdruck : zur Öffnung des Gaszufuhrventils benutzt wird. Dies geschieht in der Weise, daß das Gaszufuhrventil eines in die Gaszuleitung einge-1 schalteten Membranreglers 0. dgl. durch den ' Unterdruck selbsttätig geöffnet wird, während ; es sich beim Aufhören des Unterdrucks, d. h. beim Unterbrechen der Sauerstoffzufuhr, selbst- ; tätig schließt. Die Regelung der dem Brenner '■ zugeführten Gasmenge erfolgt hierbei in be- : kannter Weise entsprechend der austretenden Sauerstoff men ge durch die ständige Einwirkung des erzeugten Unterdrucks auf die Reglermembran. '. :Since in the known gas oxygen burners, which are mainly used to operate headlights, the oxygen and the fuel gas are each shut off by a special valve, it can easily happen that the burner becomes sooty if both valves are not closed at the same time due to the sole supply of fuel gas. In the known devices of this type there is also the possibility that the outflowing oxygen passes into the gas line due to irregularities in the operation of the burner and here forms an explosive mixture with the gas.
\ The invention avoiding these evils and at the same time maintaining constant aim of a low amount relationship between fuel gas and oxygen. This purpose is achieved in that the oxygen is passed through a jet nozzle immediately in front of or in the burner mouth and the negative pressure occurring in the jacket space surrounding the jet nozzle is used to open the gas supply valve. This is done in such a way that the gas supply valve of a turned-1 in the gas supply line switched regulator membrane is 0. like automatically opened by the 'vacuum while. when the negative pressure is stopped, ie when the oxygen supply is interrupted, it self-; active closes. The control of the torch '■ supplied amount of gas takes place here in loading: men known manner in accordance with the exiting oxygen ge by the constant action of the negative pressure generated on the regulator diaphragm. '. :

Einen wesentlichen Vorteil dieser Einrichtung bedeutet der selbsttätige Abschluß der Gaszuleitung nach Unterbrechung der Sauerstoffzufuhr. Hierdurch ist der Brenner nicht mehr der Gefahr des Verrußens ausgesetzt, da durch die gegenseitige Abhängigkeit in der Zufuhr der beiden Gase niemals Brenngas allein zum Brenner gelangen kann. Die dazu gewählte Anordnung hat gleichzeitig auch die Wirkung, daß kein Sauerstoff in die Brenngasleitung eindringen kann, weil in diesem Falle zunächst .der Unterdruck im Membranregler aufhören müßte, wodurch sich das Gaszufuhrventil sofort schließen und so den Eintritt des Sauerstoffes verhindern würde. Schließlich bleibt bei der vorliegenden Einrichtung der Unterdruck im Saugraum des Reglers beim Betriebe des Brenners innerhalb weiter Grenzen praktisch dauernd konstant.A major advantage of this facility is the automatic completion of the Gas supply after interruption of the oxygen supply. Because of this, the burner is not more exposed to the risk of sooting, because of the mutual dependency in the Supply of the two gases, fuel gas alone can never reach the burner. The to it The chosen arrangement also has the effect that no oxygen enters the fuel gas line can penetrate, because in this case first of all the negative pressure in the membrane regulator would have to stop, whereby the gas supply valve closes immediately and so the entry of oxygen would prevent. Finally, stick with the present facility the negative pressure in the regulator's suction chamber when the burner is operating within wide limits practically constantly constant.

Die Erfindung ist auf der beiliegenden Zeichnung in einem Ausführungsbeispiel dargestellt. Fig. ι ist ein teilweiser Senkrechtschnitt durch die Regelvorrichtung nebst Brenner; Fig. 2 stellt einen gegenüber Fig. 1 vergrößerten wagerechten Schnitt durch das Regelventil dar.The invention is illustrated in an exemplary embodiment on the accompanying drawing. Fig. Ι is a partial vertical section through the control device together with the burner; Fig. 2 represents an enlarged horizontal section through the control valve compared to FIG. 1.

Der Membranregler der gezeigten Einrichtung ist — getrennt von dem Brenner 1 "— mit einem Reiniger 2 für das Brenngas, Leispielsweise Azetylengas, in einem gemeinsamen Gehäuse 3 angeordnet. Der Brenner 1 undThe membrane regulator of the device shown is - separate from the burner 1 "- with a cleaner 2 for the fuel gas, for example acetylene gas, in a common Housing 3 arranged. The burner 1 and

Claims

the housing 3 are provided with hose sleeves for connecting a hose 4. Even the cleaner 2 has a hose nozzle at the top for connecting a hose 5 for the supply line of acetylene gas. The cleaner consists of a with horsehair 0. The like. ; filled cylinder, which is closed at the top by a lid 6. The through this Lid leading inlet opening 7 for the ίο gas is in a known manner by a ge ; curved sieve disc 8 separated from the horsehair filling j. To the lower end of the : gers 2 joins the housing 3 of the membrane regulator. Here, too, is the horsehair filling of the cleaner from the gas outlet space 9 leading into the regulator through a sieve disc ; 10 separated, which consists of a coarse and a fine wire mesh layer.

The membrane regulator interacts with the gas supply valve 12 controlled by the membrane 11. The membrane 11, which is under the pressure of a spring 13 and clamped between the bottom 14 and the upper part of the housing 3, has two plate-shaped disks 15 in the middle, which are secured by nuts! 16 are held together on a central spindle 17. The spindle 17 is through a narrow opening in the cavity 18 of the ^! Control valve 12 introduced and provided with a ball 19 at its upper end. A spring 20 presses this ball 19 constantly against the lower opening of the cavity 18, which is closed at the top by a plate 21. The valve 12 is of an outer cylindrical shape and has coaxial grooves 22 on its circumference (FIG. 2) which, in conjunction with the cylindrical guide for the valve 12, form small vertical passages for the gas coming from the cleaner 2. The valve 12 is beveled at its lower end to form a seat surface, which is ground into a correspondingly designed surface of the housing 3 that serves as a valve seat. A support ring 23 for the spring 13 is also provided on the plate 15 of the membrane 11.

The space above the membrane 11 is

through 'the opening 25 and the hose 4 with connected to the housing of the burner I. The space below the membrane stands through an opening 26 in communication with the outside air.

The housing of the burner 1 forms a elongated cylindrical cavity, in the middle of which 'the line 27 for the oxygen led up is. At the upper end, the housing of the burner 1 is pulled together to form a nozzle 28, which acts as a burner and jet nozzle at the same time. The line 27 opens below the narrowest point of this nozzle.

The mode of operation of the device described is as follows:

After turning on the oxygen at the shut-off valve, the gas bottle (not shown) forms in the vicinity of the mouth of the tube 27 as a result of the outflow of oxygen a negative pressure. This negative pressure is created through the space of the burner housing ι and the line 4 into the space above the membrane 11 in the housing 3 continues. As a result, the atmospheric pressure acting on the underside of the membrane takes over and presses the membrane against it the effect of their loading spring 13 upwards. At the same time the valve 12 lifted from its seat, so that the coming from the line 5 through the cleaner 2 Gas can enter the housing 3 and to the burner ι. When turning off the oxygen supply stops the negative pressure in the diaphragm housing above the diaphragm 11, and the valve 12 consequently closes at the same time under the action of the spring 13.

■ ;. ■ Patent claim:

Control device for the gas supply in gas oxygen burners for headlights o. The like., characterized in that the

• interacting with the membrane of a membrane regulator connected to the combustion gas line Gas supply valve is usually closed by its load (spring, weight or the like) and only is opened by the negative pressure that

■. ' ■ through the jet nozzle built into the oxygen supply line or the burner at Oxygen flows through and through the fuel gas line to the membrane is transmitted.

For this purpose ι sheet of drawings.