ELECTRIC BOILER FOR INDEPENDENT HEATING AND HOT WATER SUPPLY Russian patent published in 2007 - IPC F24H1/20 

FIELD: power engineering, particularly self-contained hot-water heating and hot water supply of individual flats, houses and other rooms.

SUBSTANCE: electric boiler comprises body, heat-exchanger arranged in the body, electric heaters for liquid heating, supply and discharge pipes, working temperature sensor with installation member and threshold temperature sensor, which controls supply voltage contactor. The threshold temperature sensor controls power supply switches, which energize electric heaters. Electric heater for liquid is of through type and has electrodes. The electric heater is arranged inside boiler, passes through boiler bottom and connected to heat carrier supply valve and to bypass cold water supply valve. Heat-exchanger inlet is connected to discharge pipe of the electric heater through insulation pipe. Heat-exchanger outlet is connected to bypass hot water discharge valve through the second insulation pipe. Heat-exchanger has fixed electrode to change water heating current inside boiler. Movable electrode cooperating with said electrode is connected to boiler body and provided with position adjusting means, which changes position thereof relatively fixed electrode. Boiler body has the first T-joint arranged from below and provided with bypass valve and cold water supply valve connected thereto. Upper boiler body part has the second T-joint with bypass valve and hot water discharge valve connected thereto. Heat-exchanger with fixed electrode comprises insulated current supply phase lead. Movable electrode position adjusting means comprises rocking lever with spring-loaded left arm and shaped right arm having movable electrode connected thereto. Right arm is supported by magnetic stop inserted in the device and connected to movable magnet through nonferromagnetic boiler body wall. The movable magnet is arranged on boiler wall face and is provided with arm for magnet sliding to regulate electric heater current. The rocking lever is connected with ear formed on inner boiler body wall through pin.

EFFECT: simplified structure, decreased size and mass along with reduced non-productive losses.

4 cl, 5 dwg