| Patents for F24H 8 - Fluid heaters having heat-generating means specially adapted for extracting latent heat from flue gases by means of condensation (1,863) |
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| 01/05/1994 | DE4220866A1 Heat producer with burner giving off exhaust containing steam - comprises conduits carrying heating medium through exhaust chamber and condensate collector comprising several inclined trays one above the other |
| 12/21/1993 | US5271376 Serpentined tubular heat exchanger apparatus for a fuel-fired forced air heating furnace |
| 11/25/1993 | DE4306299A1 Heat exchanger for calorific value boiler - comprises ranks of finned pipes and the row facing the boiler burner is inclined at sixty degrees |
| 11/23/1993 | US5263892 High efficiency heat exchanger system with glycol and refrigerant loops |
| 10/28/1993 | DE4312929A1 Siphon for condensate drain of heater - has collection tank with barrier liquid, with specific density higher than that of liquid to be removed |
| 10/14/1993 | DE4312094A1 Condensate outlet component for flue gas conduit of heating boiler - comprises pipe piece and outlet connection with ring space formed by collar in area of inlet of outlet connection |
| 09/30/1993 | WO1993018833A1 Process and arrangement for vapour enrichment of air |
| 09/08/1993 | EP0558672A1 Gas burner system, gas burner and a method for combustion control. |
| 08/12/1993 | DE4303579A1 Fuel fired heater for hot water heating system - has monitor for mean temperature of heat exchanger to allow for condensation effects |
| 07/14/1993 | CN2138275Y Instant water boiler with heating tube |
| 06/29/1993 | CA1319575C Hot water production appliances |
| 06/24/1993 | WO1993012386A1 Method for regenerative heat exchange |
| 06/22/1993 | US5221043 Outside waste oil furnace |
| 06/17/1993 | DE4140953A1 Tube heat exchanger for hot water heating boiler - cools combustion gases and combustion air used by boiler, tubes conveying combustion gases with air contacting tube exteriors. |
| 05/06/1993 | DE4237134A1 Multi-floor-building exhaust pipe system - has condensate drains from heater burners connected to common down-pipe |
| 05/05/1993 | CN2132126Y Controllable hot flue boiler heated in cyclone combustion |
| 04/14/1993 | EP0536133A1 Method and device in closed heating plants. |
| 04/07/1993 | EP0535106A1 Method of transferring heat energy from a low to a higher temperature. |
| 03/02/1993 | US5189887 Heat condensing furnace with de-intensifier tubes |
| 01/14/1993 | DE4121953A1 Combined low temp. heating system and domestic hot water supply - includes a container with heat exchanger and a fuel fired boiler with a pump and heat exchanger with control valve |
| 01/12/1993 | US5178210 Vapor pump employing counterflow exchange between air and combustion products without an intermediate fluid |
| 01/12/1993 | US5178124 Plastic secondary heat exchanger apparatus for a high efficiency condensing furnace |
| 12/25/1992 | CA2053663A1 Dispersed bubble condensation |
| 10/15/1992 | DE4111298A1 Heat exchanger for small power generating plant - contains exchanger battery as plant cooler, combustion chamber, and waste gas intake chamber |
| 10/08/1992 | DE4111179A1 Chimney stack with glass flue liner - has statically supporting outer tube with definite spacing between it and glass liner |
| 10/07/1992 | EP0507167A2 Flue gas conduit in a boiler |
| 09/16/1992 | EP0503146A1 Flat heating gas draft tube especially for condensing boiler |
| 09/16/1992 | CN2116174U Air heater with heat tube |
| 09/15/1992 | US5146947 Condensate drainage for gaseous fuel fired condensation boilers |
| 09/09/1992 | CN2115494U Residence type non-pressure hot-water boiler |
| 08/19/1992 | EP0499557A1 Compact cast iron burner of the total premix type |
| 08/12/1992 | EP0498749A1 Heat exchange element for cast iron sectional boiler |
| 08/12/1992 | EP0498748A1 Cast iron gas-fixed sectional boiler with total premixing |
| 08/04/1992 | CA1305897C High efficiency water heater construction |
| 06/25/1992 | DE4041640A1 Method of regulating water circulation in heating system - involves using heat pump driven by strong inflow of cold water |
| 05/29/1992 | WO1992008930A1 Gas burner system, gas burner and a method for combustion control |
| 05/27/1992 | CN2105616U Fire pass way heat exchanger |
| 05/26/1992 | US5115798 Condensate trap |
| 05/26/1992 | CA2013250C High-efficiency furnace for mobile homes |
| 05/21/1992 | DE4107948C1 Heating gas flue pocket of two sheet metal blanks - top, conically tapering inlet duct, and conically widening, lower outlet duct |
| 04/23/1992 | DE4134230A1 Heating system consisting of burner and exhaust collecting chamber - has condensation drain controlled by spring-loaded valve in bottom of exhaust chamber |
| 04/23/1992 | DE4107947C1 Boiler with flat sheets - has corrugations running in different directions to give rapid heat transfer |
| 04/17/1992 | CA2047355A1 High efficiency water heater |
| 03/24/1992 | US5097819 Heat-exchanger for condensing water |
| 02/05/1992 | EP0470053A1 A condensate drainage device for gaseous fuel fired condensation boilers |
| 01/31/1992 | CA2045870A1 Condensate drainage device for gaseous fuel fired condensation boilers |
| 12/31/1991 | US5076494 Integrated hot water supply and space heating system |
| 12/26/1991 | WO1991019947A1 Method of transferring heat energy from a low to a higher temperature |
| 12/18/1991 | EP0461781A1 Heat exchanger |
| 12/04/1991 | EP0459785A1 Hot water boilers |
| 11/07/1991 | DE4026823A1 Hot water boiler with two heat exchanger - has second heat exchanger to pre-heat combustion air |
| 11/06/1991 | EP0454948A2 Process and apparatus for eliminating acid and heavy metals containing impurities from liquids |
| 10/22/1991 | US5059115 Fuel fired burner |
| 09/24/1991 | CA1289427C Liquid-backed gas-fired heating system |
| 09/17/1991 | CA1289023C Integral liquid-backed gas-fired space heating and hot water system |
| 09/10/1991 | US5046478 Recuperative furnace system for space air and domestic hot water |
| 08/22/1991 | WO1991012468A1 Boiler |
| 08/20/1991 | CA1287780C Furnace inducer outlet elbow |
| 08/14/1991 | EP0441315A1 High-efficiency heating unit |
| 07/09/1991 | WO1991010868A1 Method and device in closed heating plants |
| 07/02/1991 | US5027749 Gas fired |
| 06/26/1991 | EP0220190B1 Water heater |
| 06/18/1991 | US5024595 Furnace protective device |
| 06/05/1991 | EP0430061A2 Boiler |
| 05/02/1991 | EP0425363A1 Vapor pump with countercurrent exchanger for air and combustion products without intermediate fluid |
| 04/30/1991 | US5011916 Preparation of 99m Tc radiopharmaceuticals |
| 04/24/1991 | EP0166746B1 Preparation of ?99m tc radiopharmaceuticals |
| 04/18/1991 | DE3933553A1 Boiler with heat recovery device - has exhaust channel and sound-proof barrier to reduce burner noise |
| 03/12/1991 | US4998508 Condensing type boilers |
| 02/28/1991 | DE4027080A1 Water heater for central heating system - has channel from combustion chamber into flue where it rises concentric to flue |
| 02/26/1991 | US4995375 Heat exchange pipes for a furnace system |
| 02/19/1991 | US4993402 Fuel efficient rapid response water heating module |
| 02/05/1991 | US4989781 Forced hot water |
| 01/10/1991 | DE3920206A1 Combustion chamber for central heating boiler - can operate either on liq. or gaseous fuel |
| 01/02/1991 | EP0405621A2 Recuperative furnace |
| 12/27/1990 | EP0404260A1 Laminated burner structure |
| 12/27/1990 | EP0404259A1 Laminated heat exchanger structure for a domestic heating device |
| 11/07/1990 | EP0396294A1 Gas fired appliances and installations incorporating such appliances |
| 10/02/1990 | US4960102 Fuel-fired condensing type forced air heating furnace |
| 09/19/1990 | EP0387548A2 Boiler |
| 09/05/1990 | EP0385963A1 Boiler with surface combustion burner |
| 09/04/1990 | US4953511 Corrosion resistant liquid heating module |
| 08/09/1990 | DE4002495A1 Neutralising acidic condensate in heat exchanger - by contact with alkaline-reacting metal oxide |
| 08/08/1990 | EP0381252A2 Fuel fired burner |
| 07/25/1990 | EP0379469A2 Heating installation |
| 07/03/1990 | US4938204 Water heater or boiler with improved thermal efficiency |
| 06/21/1990 | DE3842463A1 Heating device (heater, radiator) |
| 06/13/1990 | EP0373027A1 Condensing boiler for heating with a heat-conveying liquid |
| 05/16/1990 | EP0368599A2 Heat recovery systems |
| 05/15/1990 | US4924848 High-efficiency furnace for mobile homes |
| 05/08/1990 | US4923969 Preparation of 99m Tc radiopharmaceuticals |
| 05/08/1990 | US4923393 Fuel fired burner |
| 05/01/1990 | CA1268384A1 Air preheater for a compact boiler |
| 04/17/1990 | CA1267818A1 High efficiency water heater |
| 03/29/1990 | DE3931746A1 Pre-discharge monitoring of neutralised combustion fume condensate - with unsatisfactory sensor results automatically stopping combustion |
| 03/22/1990 | DE3831218A1 Water heater |
| 03/22/1990 | DE3831208A1 Heating boiler |
| 03/20/1990 | US4909307 Regenerative bed heat exchanger |
| 03/20/1990 | US4909191 Hot water production appliances |
| 03/20/1990 | US4909190 Boilers |