Heating apparatus for a water heating for small rooms

In a heater for a water heating installation for small rooms, such as trailers and mobile homes having a vertically disposed combustion chamber, part of which is an ascending shaft, a plurality of burners located below said combustion chamber for gaseous or gasified liquid fuels, an exhaust gas chimney connected to said ascending shaft for discharge of said combustion gases, the improvement comprising a heating water jacket, flow and return pipes connected to said heating water jacket for the supply of radiators, or the like, with heating water, said heating water jacket being circumferentially arranged about said ascending shaft such that said ascending shaft forms a wall of said heating water jacket, said heating water jacket having at least one substantially horizontally disposed partition forming a plurality of circulation channels arranged in a superposed manner and wherein, a pair of lower channels of said circulation channels are in space confronting relationship with each having a wall sloping inwardly into said combustion chamber to thereby increase the area of the wall surfaces exposed for heating and to improve the combustion of the gases rising from said burners, said flow and return pipes being connected to separate circulation channels, a plurality of heating fins fixed in the upper region of said ascending shaft, a heating air jacket surrounding said heating water jacket and having an exit opening, a chimney jacket connected to said heating air jacket and surrounding said exhaust gas chimney, an atmospheric room air inlet, means for forcing said room air through said chimney jacket and heating air jacket to thereby become heated by heat exchange, and flowing said heated air through said exit opening into said room.