COAXIAL HEATER Russian patent published in 2007 - IPC F24H1/00 

FIELD: water or air heaters.

SUBSTANCE: coaxial heater comprises coaxial inner pipe and outer pipe and supplying and discharging branch pipes. The first ends of the outer and inner pipes are insulated and is energized. The second ends of the pipes are in a contact one with the other. The supplying branch pipe is connected with the outer pipe through tangentially mounted nozzle. The end of the inner pipe positioned away from the discharging pipe is perforated.

EFFECT: enhanced efficiency.

1 dwg