HEAT-RETAINING ELECTRIC LIQUID HEATER Russian patent published in 2002 - IPC

FIELD: electrical engineering; liquid heating systems, hot water supply and heating systems. SUBSTANCE: proposed heat-retaining electric liquid heater includes reservoir for liquid with outlet branch pipe and heating element made in form of secondary winding of transformer; part of said winding is part of bottom of reservoir; heater is also provided with heat exchanger located in reservoir and at least one flushing branch pipe; other part of secondary winding is located under bottom embracing the primary winding whose magnetic circuit is detachable; outer surface of reservoir is provided with heat-insulating coat. EFFECT: increased rate of heating; improved servicing conditions; enhanced durability. 11 dwg