GB622011A - Improvements in or relating to combined air and water heating apparatus - Google Patents

Abstract

622,011. Air and gas heating stoves. STOCKHILL, E., and HAY. H. J. Feb. 28, 1947, No. 5871. [Class 64(i)] Combined air and water heating apparatus comprises heat generating means for heating the air which is induced to flow through the apparatus in a predetermined path in which at least one heat exchange unit is interposed to transmit heat to the air flow from combustion gases and hot air rising from the heat generating means, and a hot water boiler, around which the heated air flows in its passage through the apparatus. In the form shown, an insulated casing 1 houses a blower 2 located beneath the combustion chamber 3 over which is arranged a heat exchange unit 4 and a hot water boiler 5 having a central flue 13. The heat exchange unit is disposed on each side of the hot water boiler and comprises a series of staggered nose elements 18 or fins projecting on both sides of each wall of the side flues 11. Hot gases from the combustion chamber 3 flow through the flues 11 and impinge upon the noses or fins and heat is conducted therethrough to the space 12 and the air ducts 19 lying adjacent to the heat exchange unit. Some of the products of combustion flow up the central flue 13 of the boiler, which has a damper for regulating the flow and perforated baffles 14 to conserve the heat. Cold air is blown upwardly through the ducts 20 on each side of the combustion chamber and is baffled at 21 to flow to the rear duct 22, flowing then through the space 12 between the opposing parts of the heat exchanger and around the hot water boiler 5. The heated air then flows to the front duct 23, is baffled to flow through the side ducts 19 and is discharged through openings 25. The heating means may comprise gas burners, electric elements or solid fuel. The heating apparatus may be built into a structure incorporating an airing cupboard.