How to make an instantaneous water heater from a gas cylinder

Such a boiler will be indispensable in a country house or in a private house where there is no centralized or autonomous source of hot water. To make it, you will need a minimum of costs, a little time and basic skills in cutting, soldering and welding metal.
How to make an instantaneous water heater from a gas cylinder

Will need


  • Before starting work, we need to find and purchase:
  • old gas cylinder;
  • door hinges and awnings;
  • plastic pipe and corrugated elbow;
  • copper tubes and elbows;
  • hoses, connectors and adapters;
  • solder and flux for soldering copper pipes;
  • perforated mounting tape;
  • screws with washers;
  • steel corner.

How to make an instantaneous water heater from a gas cylinder

The tools we need are: grinder, semiautomatic welding machine, gas torch, drill, hammer, dremel, etc.

Water heater manufacturing process


How to make an instantaneous water heater from a gas cylinder

Before performing all work, fill the cylinder with water to remove possible gas and gasoline residues.
How to make an instantaneous water heater from a gas cylinder

At the bottom side of the gas cylinder, following the markings, we make a rectangular cutout using a grinder.
How to make an instantaneous water heater from a gas cylinder

We cut off the excess arrow loops from the fastening bar, and bend the remaining part into an arc, helping ourselves with a hammer.
We apply the working surface of the loop to the side surface of the cylinder outside the vertical cut, and press the bent part of the bar against the section of the cylinder intended for the cut. In this position, we weld the arrow loop to the cylinder, after which we complete the cutting. We clean the edges with a grinder.
How to make an instantaneous water heater from a gas cylinder

We start cutting the top of the balloon with a small arc along the cut line. We attach a regular door hinge to it and weld one wing to the cylinder outside the cut. Then we continue cutting until the top part is completely separated from the bottom.
How to make an instantaneous water heater from a gas cylinder

Slightly stepping down from the top edge of the cylinder, we apply the end of the plastic elbow and mark the location of the cutout of the round hole.
How to make an instantaneous water heater from a gas cylinder

To do this, we first use an angle grinder and finish with a Dremel. We insert the elbow into the resulting hole, orienting its exit to the top.
How to make an instantaneous water heater from a gas cylinder

We cut three identical fragments from the steel corner and weld them to the base of the cylinder on the side at an equal distance around the circumference, directing one of the shelves outward. This will increase the stability of the cylinder when it is in a vertical position.
How to make an instantaneous water heater from a gas cylinder

How to make an instantaneous water heater from a gas cylinder

We install the upper part previously separated from the cylinder and weld the second wing of the hinge to the surface of the lid. The hinge will allow you to tilt the hood and open access to the fuel combustion zone.
How to make an instantaneous water heater from a gas cylinder

We cut the copper tubes to the required length and use copper elbows to connect them together.
How to make an instantaneous water heater from a gas cylinder

We apply flux to the joints with a brush and seal it with solder, melting it with a gas burner. We fix the tubes on the outer surface of the cylinder using perforated mounting tape and screws with washers, which we screw with a drill into holes pre-drilled in the wall of the cylinder.
How to make an instantaneous water heater from a gas cylinder

How to make an instantaneous water heater from a gas cylinder

We connect a water hose to the entrance of the copper pipes using connectors and supply water.We make sure that there are no leaks and water comes out from the other end of the copper tubes. We connect the output with a heat-resistant hose to the consumer, for example, a shower head through a water starter.
How to make an instantaneous water heater from a gas cylinder

How to make an instantaneous water heater from a gas cylinder

Let's check the operation of the instantaneous water heater. We turn on the cold water supply with the starter closed, light a fire in the firebox and wait for a steady flame.
How to make an instantaneous water heater from a gas cylinder

Then we close the firebox door and, throwing away the lid on top, add the main fuel. After a while, we open the starter and make sure that warm or even hot water comes out of the shower head.
How to make an instantaneous water heater from a gas cylinder

How to make an instantaneous water heater from a gas cylinder

Finished look:
How to make an instantaneous water heater from a gas cylinder

How to make an instantaneous water heater from a gas cylinder

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Comments (3)
  1. Stepan
    #1 Stepan Guests March 19, 2020 11:00
    2
    The efficiency will be extremely low, not worth the cost. The screen pipes (heat-receiving) must be placed inside, in much larger quantities, with thermal insulation on top - fireclay, asbestos, fiberglass, etc., plus a good intensity of fuel combustion, maybe even with blowing.
  2. Yuri
    #2 Yuri Guests March 20, 2020 00:40
    5
    Classic idea, technical solution. Wind the copper tube in turns around the tank and do not solder.The more tubes we have, the denser the winding, the larger the heat removal area and the higher the efficiency. Attach any way. Insulate the top as desired. At least coat it with clay.
  3. Yurkesh Ivonov Bedan
    #3 Yurkesh Ivonov Bedan Guests 23 March 2020 20:33
    1
    Wood-burning titanium was invented in the century before last. Why repeat what was invented, especially with higher efficiency? In this version: Wouldn’t it be more effective to wind a coil and attach it inside the stove with cold water supplied from the bottom? The efficiency will be much higher.