HOT-WATER BOILER Russian patent published in 2009 - IPC F24H1/08 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be used in independent heat supply systems with natural or forced heat carrier circulation. Proposed invention consists in that the hot-water boiler comprises the barrel made up of two coaxial rings. The convective bundle smoke tubes are arranged in annular chamber between the said boiler rings. It comprises also heat carrier heating circuit, combustion chamber formed by the inner ring chamber, burner mounted inside aforesaid combustion chamber, fuel feed system and automatic control system. The ratio of cross section area of annular chamber between boiler rings to the total cross section area of smoke tubes makes 5 to 7. The ratio of the combustion chamber cross section area to the total cross section area of smoke tubes makes 4-6. The proposed boiler differs from known designs in that it is equipped with programmable controller with operating conditions card, emergency power supply, two-channel temperature controller with temperature pickups, geared motor, level pickup and operating condition selector switch. It incorporates also automatic temperature control system that receives control signal from temperature pickup arranged in heat consumer premises. Also the said system controls and regulates boiler heat carrier temperature in response to received control signal.

EFFECT: boiler that features efficiency, ease of use, economic operation, adapted for operation on solid, liquid and gaseous fuels of various types.

11 cl, 3 dwg