US 12,405,010 B2
Heating device with improved efficiency
Gordan Dzeba, Dintikon (CH); and Mike Flueckiger, Muenchwilen (CH)
Assigned to Suter Entfeuchtungstechnik AG, Lupfig (CH)
Filed by Suter Entfeuchtungstechnik AG, Lupfig (CH)
Filed on Nov. 2, 2022, as Appl. No. 17/979,205.
Claims priority of application No. 21206283 (EP), filed on Nov. 3, 2021.
Prior Publication US 2023/0139453 A1, May 4, 2023
Int. Cl. F24B 5/02 (2006.01); F23B 80/04 (2006.01); F24B 1/02 (2006.01); F24B 13/00 (2006.01); F24B 13/04 (2006.01); F24H 9/00 (2022.01); F24H 9/189 (2022.01)
CPC F24B 5/023 (2013.01) [F24B 1/026 (2013.01); F24B 5/025 (2013.01); F24B 13/006 (2013.01); F24B 13/04 (2013.01); F24H 9/0084 (2013.01); F24H 9/189 (2013.01); F23B 80/04 (2013.01); F24D 2200/067 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A heating device, comprising
A) a burner part, comprising
a combustion chamber,
a double-walled, internally hollow combustion-chamber wall, which has an upper opening leading above the combustion zone into the combustion chamber,
a flue-gas duct which leads the flue gas downwards along the outside of the combustion chamber,
the flue-gas duct is followed by a heat-exchanger area comprising
initially, a flat-tube flue-gas heat exchanger,
then, a tertiary-air heat exchanger,
a flue-gas ventilation stack,
a radiant-heat exchanger located above the combustion chamber,
a flue-gas flap at the upper end of the flue-gas duct, which, when open, connects the flue-gas duct to the stack,
B) a heating part, comprising
an air suction blower,
an exhaust-air heat exchanger with the same heat-transfer medium as the flat-tube flue-gas heat exchanger,
an outlet opening for the heated air,
wherein the flat-tube flue-gas heat exchanger forms a heat-exchanger circuit with the exhaust-air heat exchanger.