UNIVERSAL HEATER Russian patent published in 2008 - IPC F28D15/02 

FIELD: heating.

SUBSTANCE: universal heater relates to heating engineering. The heater comprises pipes fixed in the headers forming one cavity of evaporating-condensing cycle. Header consists of two coaxial pipes of larger and smaller diameters. Electric heaters, coolant level indicator and thermocouple are located in the cavity between pipes. Connecting pipe is located at the lower part of the larger diameter pipe. Pipe diameters are of ratio D₂/D₁=0.65-0.85. Electric heaters, coolant level indicator and thermocouple are connected to heater automatic control system. Additional tube is located inside the smaller diameter pipe, forming a hot gases header; nozzles of gas burners with electric gas flow-rate controllers are located around the perimeter of the hot gases header. Steam lines, connected to the steam headers, are fixed along the length of the larger diameter pipe from two sides at the upper part; condensate lines, connected to the steam headers from below, are fixed to the lower part of the larger diameter pipe. Heat exchangers with thermocouple and electromagnetic valve are connected to the steam header from above. An automatic device for coolant set level maintaining is installed in the cavity between larger and smaller diameter pipes. This device is connected to the tank filled-in with water by means of pipeline equipped with the electromagnetic valve. A smoke stack adjoins the hot gases header.

EFFECT: enhancement of heater reliability and life time; enabling heater to work using electric energy or thermal energy produced at gas combustion.

2 cl, 2 dwg