HOT-WATER BOILER Russian patent published in 2002 - IPC

FIELD: heat power engineering, applicable in heating and hot-water supply systems, municipal-domestic equipment inclusive, as well as a heater of liquids and gases. SUBSTANCE: each fire tube in the hot-water boiler is installed in the inner cavity of the respective branch of the U-shaped tube, the branches of water inlet and the branches of water outlet are staggered in the cavity of the boiler body so that a row of water inlet branches is made in the form of a row of inner branches of the U-shaped tubes, a row of water outlet branches is made in the form of a row of outer branches of the U-shaped tubes. EFFECT: enhanced stability of boiler operation on water treated by scaling inhibitors inclusive, prevented boundary superheat and/or water boiling and slime deposit on tubes. 13 cl, 4 dwg