| Patents for F24D 5 - Hot-air central heating systems; Exhaust-gas central heating systems (1,847) |
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| 10/19/1993 | US5253635 Gas-fired heater |
| 10/14/1993 | DE4220385C1 Heat exchanger station for renovation and/or extension of hot air heating in church - involves central hot air producer connected to underfloor air conducting channels, which issue into church via hot air outlet apertures |
| 09/29/1993 | CN2142944Y Domestic thermotube-type gas air-heater |
| 09/23/1993 | DE4306778A1 Equipment for floor heating or cooling in buildings - includes return air channel and ventilator coupled to equipment for recovery of heat or cold from exhaust air |
| 08/26/1993 | DE4205540A1 Radiant heating by gas - Comprises porous incandescent ceramic panels in enclosed housing |
| 08/18/1993 | EP0555658A1 Air conditioning system for buildings |
| 08/04/1993 | EP0553893A2 Improved method and apparatus for preheating ventilation air for a building |
| 07/29/1993 | DE4201625A1 Ceramic elbow section for air duct - is formed out of two parallel quarter circle sections and adjoining curved wall |
| 07/22/1993 | DE4301008A1 Air conditioning plant for multi storey buildings - comprises blinds with upper slats being light reflecting and lower slats being light absorbing whose areas are varied by adjusting parting strip |
| 07/13/1993 | US5226593 Method and means of heating space areas and objects |
| 07/06/1993 | US5224650 Fireplace furnace heating system |
| 06/16/1993 | CN2136411Y Heat exchanger and waste heat utilization apparatus for hot-blast stove |
| 05/26/1993 | EP0543129A1 Installation for heating or cooling of a building |
| 05/19/1993 | CN2133790Y Fan heating unit |
| 05/18/1993 | US5211331 Control in combination with thermostatically responsive assembly |
| 05/13/1993 | DE4237532A1 Heat exchanger for air-cooled block heating plant - effects heat exchange between internal combustion engine and heating system by air exchange |
| 04/14/1993 | EP0536446A1 A method for heating the air in a building |
| 04/14/1993 | EP0536445A1 A method for optional heating or cooling the air in a building |
| 04/14/1993 | EP0536372A1 Surface heating/air conditioning system |
| 03/24/1993 | CN2128706Y Electric fan type heating device |
| 02/16/1993 | US5186160 Solar radon reduction |
| 02/04/1993 | WO1993002324A1 Means in air heating system, e.g. for dwellings |
| 02/03/1993 | CN1068643A Light heating device |
| 01/21/1993 | WO1993001403A1 Combined heat and power system |
| 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 |
| 01/13/1993 | CN2126555Y Bulkhead convolution type gas hot-air heating farnace |
| 12/16/1992 | CN2125090U Gas heating device |
| 12/09/1992 | CN2124419U Electrothermal hot air discharging device |
| 11/26/1992 | WO1992020883A1 A foundation for a building structure |
| 11/19/1992 | DE4114633A1 Direct surface heating air conditioning system |
| 11/12/1992 | WO1992019919A1 Surface heating/air conditioning system |
| 10/21/1992 | EP0509155A1 Radiant heating systems |
| 10/21/1992 | CN2119600U Air heater using gaseous fuel |
| 10/15/1992 | WO1992017664A1 Temperature regulation of various building parts of houses |
| 10/07/1992 | EP0506678A1 Flow distribution conduit means |
| 09/16/1992 | EP0503489A2 Room heating device |
| 07/30/1992 | DE4102137A1 Installation of heat exchange pipework - includes stabilising during casting and pressure test by filling with water |
| 07/29/1992 | CN2111482U Heat tube wind machine |
| 07/29/1992 | CN2111481U Warm wind machine |
| 07/29/1992 | CN2111480U Bathtub with heating devcie |
| 07/28/1992 | CA1305691C Heating system |
| 07/21/1992 | US5131461 Heating apparatus |
| 07/15/1992 | CN2110175U Honeycomb briquet warm apparatus |
| 07/14/1992 | US5129578 Usage of conductive heat source generated by heating compressed air |
| 07/02/1992 | DE4204760A1 Heat insulating wall - has parts configured so that gas flows through them |
| 06/24/1992 | CN2108243U Hot-air hood device |
| 06/11/1992 | DE4038495A1 Heating element for steam or hot water circuit - provides supplementary electric heating of metallic block permeated by hot fluid tubes and open air passages |
| 06/10/1992 | CN2106965U High-efficient multi-functional coal-firewood saving steamboiler |
| 06/03/1992 | EP0488064A1 Process for heating a building. |
| 05/27/1992 | CN2105633U Air heater for electric fan |
| 05/27/1992 | CN2105627U Two-purpose fuel vaporization oil stove for cooking and warming |
| 05/20/1992 | EP0486407A1 Ceiling element having means for regulating the temperatur of the room in which it is installed |
| 05/14/1992 | CA2055388A1 Ceiling element including temperature control means for space equipped with said element |
| 05/06/1992 | CN2103755U Microelectronic household air heating machine |
| 04/29/1992 | CN2103106U Portable heating apparatus |
| 03/18/1992 | CN2099269U Radiation type multifunction gas combustion stove |
| 03/05/1992 | DE4126430A1 Making enclosed chamber with homogenised radiation environment - using common tile elements for walls, floor and top, eliminating need for electrical systems inside chamber |
| 02/13/1992 | DE4042208C1 Heat insulated permanent shuttering for concrete slab - is cast along with reinforced ribbed slab to form transparent plates for resulting chambers, which house absorbing surfaces |
| 01/22/1992 | CN2093997U Gas-fired hot-air radiator |
| 01/15/1992 | CN2093334U Seat type warm air blowers |
| 01/01/1992 | CN2092053U Heating kerosene stove |
| 12/25/1991 | CN1015203B Heater using kerosene as fuel |
| 12/24/1991 | US5074114 Congeneration system with a stirling engine |
| 11/28/1991 | WO1991006811A3 Direct surface heating/cooling installation |
| 11/21/1991 | EP0457399A2 Cogeneration system with a stirling engine |
| 10/16/1991 | EP0452029A1 Control in combination with thermostatically responsive assembly |
| 09/24/1991 | CA1289407C Duct mounting structure for prefabricated curtain wall with air conditioning system |
| 09/24/1991 | CA1289406C Prefabricated window unit with air conditioning system |
| 09/19/1991 | DE4103010A1 Heat recovery system in building - involves forming cavities surrounding building through which air or liq. heated by sun is circulated |
| 08/28/1991 | CN2083718U Domestic gas burning hot wind heating device |
| 08/22/1991 | WO1991012467A1 A heating and ventilation system |
| 08/14/1991 | EP0440678A1 Method for heating and/or cooling air supplied into a building |
| 08/14/1991 | CN2082830U Ordinary pressure vapourizing diesel-kerosene cooker |
| 07/17/1991 | EP0307415B1 Cavity floor |
| 07/04/1991 | DE3943405A1 Utilisation of low temperature heat for heating building - involves circulation air between inner panels and inner surface of walls |
| 07/03/1991 | EP0407567A4 Radiant tube and reflector hanger |
| 07/02/1991 | CA1285420C System for providing energy supply required for a room of a building |
| 06/13/1991 | DE3940530A1 Heating for double floor - involves hot air ducts fixed to underside of panels butted together and supported on standards |
| 05/30/1991 | WO1991007623A1 An apparatus for flue gas purification and heat recovery |
| 05/16/1991 | WO1991006811A2 Direct surface heating/cooling installation |
| 05/16/1991 | WO1991006810A1 Radiant tube with internal modules |
| 05/15/1991 | CN2077092U Electric heating unit |
| 05/09/1991 | WO1991007557A1 Flow distribution conduit means |
| 05/09/1991 | CA2073039A1 Flow distribution conduit means |
| 05/08/1991 | CN2076648U Household coal-stove warm-air device |
| 05/02/1991 | DE3936332A1 Direkt - flaechenheizungs/kuehlungsanlage Direct - flaechenheizungs / kuehlungsanlage |
| 02/19/1991 | US4993202 Cavity floor |
| 01/31/1991 | DE4027833A1 Building heating and cooling circuit - directs fresh air through chambers in ceilings containing heat-transfer pipes |
| 01/30/1991 | EP0196298B1 Method and device for operation of a heating plant |
| 01/16/1991 | EP0408396A2 Fluid flow control device |
| 01/16/1991 | EP0407567A1 Radiant tube and reflector hanger. |
| 01/16/1991 | CN2069537U Gas burner for warming |
| 01/02/1991 | CN2068658U Gas heater |
| 12/27/1990 | CA1278283C High efficiency infrared radiant energy heating system and method of operation thereof |
| 12/27/1990 | CA1278282C Low-intensity infrared heating system with effluent recirculation |
| 12/26/1990 | CN2068210U Centrifugal furnace waste heat pipe wind-warming unit |
| 12/25/1990 | US4979491 Radiant tube and reflector hanger |
| 12/06/1990 | CA2015279A1 Portable floor air duct |
| 11/15/1990 | WO1990013776A1 Heating/cooling system and method |
| 11/06/1990 | US4967646 Portable floor air duct |