LIQUID HEATER Russian patent published in 2000 - IPC

FIELD: liquid heaters. SUBSTANCE: inlet and outlet branch pipes of pump of liquid heater are interconnected by means of pipe line forming closed recirculating loop. Delivery and return pipe lines of heat exchangers are connected to recirculating loop through shut- off fittings. Expansion tank is connected to inlet branch pipe of pump by means of pipe line. Heat generator is made in form of diffuser head creating intensive evaporation due to cavitation. Ratio of diameters of open area of pump outlet branch pipe to pipe line supplying the heat- transfer agent to heat exchangers is equal to or more than 2.5; delivery and return pipe lines are connected respectively to outlet and inlet branch pipes of pump. EFFECT: simplified construction and extended field of application. 2 dwg