DE158959C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The present invention relates to and aims at portable acetylene generators automatic control of the water access to the carbide. -

Most portable acetylene generators that do not use a bell jar it is almost impossible to maintain a constant pressure of the evolved gas to obtain. The water supply to the carbide

ίο is generally operated by a needle valve. The pressure of the gas generated is determined by the height of the water column present in the water tank, so that this pressure changes continuously and decreases progressively the further the water goes of the water tank is used up.

The present invention aims to address the disadvantages of regulating the water supply by avoiding a needle valve, and on the other hand the gas pressure in the apparatus independently of the amount of water present in the water tank. In the end if there is an unintentional influx of water with a lively movement of the apparatus, as it can be done on uneven paths when used on wagons, prevents.

These successes are achieved according to the present invention in that the water inflow from the water tank into the carbide tank no longer through sudden escape of the water from one. Container takes place in the other, but that a special one Control apparatus is available. This particular regulating apparatus includes a pipe with two arms that are connected to each other in their lower part and one Form a water seal that forms an air cushion more or less depending on the gas pressure compresses. The degree of cohesion

pressing this. Air cushion. regulates the water outlet from the water tank. That Water gets into the siphon and flows through from it according to its inflow Overflow pipe on the carbide.

As a result of the above arrangement, the gas contained in the apparatus becomes effective a constant water column / which determines a minimum pressure, subjected. The pressure of the gas is independent of the height of the water column in the feed tank. Any unintentional leakage of the water to the carbide is safely avoided, because there is no direct connection.

The invention is illustrated in the accompanying drawing.

Fig. Ι shows in vertical section a particularly suitable for domestic use Apparatus.

Fig. 2 shows a separate section through the distribution device for the water, the is arranged in the gas chamber of the apparatus.

The apparatus (Fig. 1) contains a container ι of a suitable shape with Supports 2 for attachment to a bicycle frame or the like. Or at any location is provided. The container 1 is divided into two parts by a partition 3. The upper Part 4 serves as a water container, the lower part 5 as a gas chamber. In the bottom of the container 1 is through a connection 6, 7 a container 8 for receiving the calcium carbide attached. The container 4 is provided with a closure 9 which contains an opening 10, which serves as a discharge opening in the event of accidental overpressure.

A pipe 11, which ends in the gas extraction pipe 12, passes through the container 4.

Claims (2)

In the gas chamber 5 there is a U-tube which consists of two parts 13 and 14 which are connected in their lower parts by a cross tube 15. The part 13 of the U-tube is connected in its upper part to a tube 16 which is suitably bent in such a way that it opens towards 17 at the top in the carbide container 8. The vertical tube 14 is similarly connected in its upper part to a horizontal tube 18 which leads outside the apparatus to a connector 19 in which a tube 20 is arranged, which is held in its upper part by a similar connector 21, which is in communication with the lower part of the water tank 4 through a pipe 22. The tube 22 opens in the water container 4 with an opening 23 which can be opened or closed by a rod 24 which is moved from the outside by a screw 25. The upper connecting piece 21, in which the pipe 20 is fixed, is provided with a connecting pipe 26 which allows the water to flow out of the container 4 into the pipe 20 in drops. In the exemplary embodiment shown, the container 8 is connected to the container 1 by two levers 27 which are attached to pins 28 of the container 1. These levers 27 engage under hooks 29 of the carbide container ι and, when they are lowered, press the edge 7 of the container 8 onto the seal "6" carried by the container 1. This seal "6 is mounted in a groove which has a perforated plate 30 which separates the container 1 from the container 8. The operation of the apparatus is as follows: the container 8 is charged with carbide and the container 4 with a certain amount of water. If you now expose the opening 23 by screwing up the rod 24, the water flows drop by drop from the container 4 through the connecting pipe 26, fills the bottom of the connecting piece 19 and flows through the pipe 18 into those of the pipes 13 and 14 formed siphon. The level gradually rises in the pipe until it reaches the lower edge of the pipes 16 and 18. At this moment, every drop which is passed through the connecting tube 26 into the connecting piece 19 corresponds to the fall of a water drop through the tube 16 onto the carbide contained in the container 8. The gas begins to develop as a result. As soon as the gas development is sufficient In order to generate a certain pressure in the gas chamber ς, this pressure acts through the pipe 16 on the upper part of the arm 13 and forces the water contained in the siphon back through the pipe 18 into the connecting piece 19 and the pipe 20. The m The air contained in this tube is consequently compressed. This pressure acts on the opening of the small cross-section which delimits the connecting tube 26 and interrupts the flow of water Water in the arm 13. At the same time, the water begins to drip again through the connecting pipe 26. The outflow is as a result However, by the pressure in the apparatus, which is transmitted through the water seal 13, 14 to the air enclosed in the tube 20, regulated. In the manner described, any excessive pressure in the apparatus is safely avoided. The access of the water to the carbide is automatically interrupted as soon as the pressure in the gas chamber exceeds a certain limit. Ρλτε ν τ-An Proverbs: 1. Arrangement for regulating the water supply to the carbide in the case of acetylenic . winder, characterized by a pipe (13, 14) with a certain amount of water that cannot flow onto the carbide (8) and that more or less depending on the gas pressure in the apparatus an air cushion (20) compresses, which the water outflow from a water container (4) in such a way " regulates that the gas pressure is independent of the amount of water in the water tank (4), which means that it is almost constant Pressure secured during development and an unintentional leakage of Water on carbide is prevented. 2. An embodiment of Einriebtung according to claim 1, characterized in that the tube which the particular Contains amount of water, a U-tube (13, 14), which is at its upper end is connected to an overflow pipe (16) which opens into the carbide container, while the other arm (14) opens into an air chamber (20) into which the water from the water tank (4) drop by drop depending on the air pressure in the air chamber to be led. 1 sheet of drawings.