The present invention relates to a hot water boiler using wood (wastewood, twigs, plant stems, etc.) as a fuel. The combustion chamber 101 is formed inside the boiler body 1 in which the upper portion is semicircular and a water tank is formed on the main wall and the upper portion. Open the inlet 102 forward and make a chimney 106 at the top to communicate with the combustion chamber, and at the top of the combustion chamber 101 at least a plurality of water pipes 103 at a side by side with a predetermined interval to communicate with the main wall tank (1a) Laid out in two or more floors to form a screening plate 104 between the lower side of the water inlet port side to form a back hole 105 in the rear side and a plurality of water pipes 107 side by side in communication with the main wall tank in the lower combustion chamber Installed at regular intervals (about 1cm) to install a drawer-type ash tray 108 under it, and forming a reservoir 20 on the top of the boiler body 1 to form a hot water outlet 201 on the top. Let the chimney inside And the hot water discharge pipe (110) of the boiler body into the storage tank and the water pipe (202) is installed at the bottom of the storage tank to feed into the main wall water tank (1a) of the boiler body (1) and into the storage tank (2). Built-in water pipe (3) for hot water exchange to create a boiler to expose the inlet 301 and the outlet 302 to the outside of the storage tank and by using the existing oil boiler (4) and plumbing equipment can be used in combination By using the piping of the already equipped oil boiler, the hot water heated by the wood boiler can be used for heating, and the oil boiler's automatic circulation device can be used to mutually benefit. You can use this inexpensive.
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