Patent ID: 6145500
Filing Date: 2000-11-14
Classification: F23B,F24H

Abstract:
A heating device, comprising:a housing;a compartment defined inside the housing, the compartment containing a liquid;a heating chamber disposed inside the housing and the compartment, the heating chamber having an outer wall;a fire chamber disposed inside the heating chamber, the fire chamber producing hot combustion gases;the housing defining a first air inlet and a first air outlet that are in fluid communication with the heating chamber for permitting air, to be heated, to enter into the heating chamber through the first air inlet and to exit the heating chamber through the first air outlet;a separation channel defined between an outer wall of the fire chamber and the outer wall of the heating chamber for conveying the air from the first air inlet into the heating chamber;the housing defining a first oxygen opening in fluid communication with the fire chamber;a curved duct disposed inside the heating chamber and in fluid communication with the fire chamber to convey the hot combustion gases away from the fire chamber, the curved duct in operative engagement with the air disposed inside the heating chamber to conduct heat from the hot combustion gases flowing therein to the air disposed inside the heating chamber to heat the air; anda flue gas channel defined in the housing, the flue gas channel being in fluid communication with the curved duct to convey the hot combustion gases from the curved duct, the hot combustion gases being separate from the heated air.