HOT-WATER BOILER Russian patent published in 2003 - IPC

FIELD: heat engineering, applicable for water heating in heating systems and hot water supply systems. SUBSTANCE: the hot-water boiler has a body with a furnace, water chamber made in the form of communicating heat exchange tubes, fire tubes communicating with exchange tubes, fire tubes communicating with the furnace on the side of the inlet, installed inside the heat-exchange tubes and combined with the water chamber into self-contained units-outside and inside. The fire tubes of the outer unit communicate with the furnace by means of reverse chambers. The fire tubes are made on the side of the outer surface with screw guide strips. The outside and inside self-contained units are provided with two feeding manifolds and a return manifold communicating with the heat-exchange tubes. Located inside the heat-exchange tubes of the inside self-contained unit are the water supplying tubes connected to the feeding manifolds of the inside unit and made with slotted nozzles in the wall of the water supply tubes located in the helical guide; the slotted nozzles are located relative to one another in the tube circumference at an angle of 120 deg., and installed in the fire tubes are dissectors of the flow of smoke gases made in the form of a tapered spring located in the axis of the fire tubes with a preliminary tensioning of it and the vertex directed towards the outlet end of the fire tube. EFFECT: enhanced specific heating efficiency. 3 cl, 9 dwg