Котел водогрійний для спалювання рослинної біомаси

The water heating boiler for combustion of plant biomass comprises a housing with a double wall and the cavity, filled with water, the combustion chamber, the cover, the nozzles for removing the products of combustion and the air supply, the intermediate container with sliding guide, installed inside, which can be extended, the air diffuser with holes, the holes with doors for loading the fuel and removal the ash, the bottom. The intermediate container is made stationary. The guide is made of the telescopic pipes of different diameter. The air diffuser with holes is made as two-sectional. The upper section of the air diffuser is designed as a truncated pyramid or cone with holes in the side faces for the air supply into the combustion zone of the combustible gases and is attached to the low end of the guide. The low section of the air diffuser is connected to the upper section through the tubular adapter and is designed as one or more tubular elements. Said elements are resting on the fuel and have the holes for the air supply into the combustion zone along its surface. The extension of the fuel burning area with maintaining of the stable air supply into the combustion zone is provided.