FIELD: ventilation.
SUBSTANCE: present invention relates to a boiler with a fan air heater. Boiler with fan air heater comprises housing having storage tank for storage of water in it, burner unit, including a pipe, a guiding flame located inside the accumulation tank, a plurality of flame tubes located between the inner surface of the accumulation tank and the flame guiding pipe, at least one fan air heater, the first end of which is installed on the surface of the accumulation tank, and the second end passes through the accumulating tank creating a flow of hot air, which goes towards the pipe, which directs the flame. Blower air heater comprises: an external tube connecting the mounting hole and the inlet hole to each other; external expansion enveloping the outer tube end connected to the mounting hole; an inner tube having a diameter smaller than the diameter of the outer tube and inserted into the outer tube; internal expansion located along external surface of second end of inner tube, remote at some distance from external expansion for connection with internal surface of external tube, and having a plurality of through holes, a blind end closing the first end of the inner tube, extending towards the pipe flame guide; heating tubes passing respectively via through holes to the inlet hole, a fan air heater device creating a hot air flow entering the inner tube through the external expansion. Hot air flow entering inner tube from blower air heater is first turned to outer expansion after collision with blind end, and then turns to heating tubes after collision with external expansion, and then through heating tubes and inlet hole enters the pipe, guide flame.
EFFECT: invention is aimed at improvement of heat exchange efficiency.
6 cl, 10 dwg
