PROPANE BURNEROne way of joining metal parts is soldering. With proper selection of flux and solder these connections are more reliable and can withstand a high load. Brazing is carried out various gas burners, with a supercharger and no bliss using as fuel liquefied propane. Homemade injector burner can be powered by cylinders with liquefied propane with a capacity of 1 litre (and cylinders must be equipped with a valve with a hose or cylinders with a capacity of 25 liters.

The figure shows the design of the burner. All of its parts are very simple and do not require high skills in manufacture.
The burner nozzle is made of steel tubing or machined from Steel or Steel 3 4$ on a lathe. In the pipe nozzle has four holes that can be blocked by the inner liner; thereby regulates the inflow of air that forms the flame. The liner is also machined from steel; it can be made as a monolithic part or is composed of three separate, subsequent propanol hard solder. In this case, the sleeve, fitted on the gas supply tube, a fixed sprocket and the short length of pipe.
The gas supply channel is made from copper or brass tube with an outer diameter of 6 mm and a wall thickness of not less than 1 mm. At one end of the tube is attached to the gas valve with a hose connection to the cylinder. On the other end of the tube screw nipple from Primus, sharpened to a cone. There is no need to make any tip, as the connecting part of the nipple Primus is threaded M5, and you just need to cut a thread M5 inside the tube and tighten the nipple. In addition, this same end of the tube firmly planted the liner, which fits the tube of the nozzle.
Fig. 1. Burner Assembly
Fig. 1. Burner Assembly:
1 — hose, 2 — gas valve 3 — gas supply pipe (6 mm in diameter), 4 — screw-clip M4, 5 — liner. 6 — nipple (from Primus), 7 — four holes, the air inlets with a diameter of 4 mm, 8 — tube nozzle.

Fig. 2. Nozzle
Fig. 2. Head.
Fig. 3. The liner Assembly
Fig. 3. The liner Assembly:
1 – grubka, 2 — star, with holes with a diameter of 1.8 mm, 3 – Bush.

To adjust the flame open the valve, supply gas to the burner and light it. Then, advancing the tube of the nozzle in the direction of overlap of the four air-intake holes to achieve stable combustion. Flame adjustment may be performed also by changing the gas feed to the burner.
After receiving the flame of desired intensity and shape, the position of the nozzle tube is fixed by screw-clamp.
This burner works well and gives a smooth Puma, pozvolyayuschei to heat a small part to 1100°C.
If you don’t have at hand, hard solders based on silver, you can use simple brass wire or any copper-Nickel alloys.
N. V.,

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