| Patents for F24H 1 - Water heaters having heat generating means, e.g. boiler, flow-heater, water-storage heater (28,567) |
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| 08/14/1991 | DE4000850A1 Sectional boiler for heating water - has vertical sections with water channels to form combustion chamber and gas flue |
| 08/14/1991 | CN2082837U Hot-water heating stove |
| 08/14/1991 | CN2082833U Multi-heat source energy-saving high efficiency water heater |
| 08/13/1991 | US5038420 Bathing apparatus having automatic control means |
| 08/08/1991 | WO1991011664A1 Water heating arrangement |
| 08/07/1991 | CN2082377U Electrothermal bathtub |
| 08/07/1991 | CN2082376U Protective devices for electric water heaters |
| 08/07/1991 | CN2082375U Water tanks for shower apparatus use making use of using surplus heat from stove body |
| 07/31/1991 | CN2081951U Water heater for industrial and domestic use |
| 07/31/1991 | CN2081950U Domestic water heater for bathing and heating |
| 07/31/1991 | CN2081940U Multipurpose apparatus of domestic heating stove for heating and dusting |
| 07/30/1991 | CA1286935C Heat exchanger for mobile aircraft deicing machine and method of use |
| 07/25/1991 | WO1991010867A1 Porous ceramic body electrical resistance fluid heater |
| 07/25/1991 | WO1991010558A1 Water heater construction and sealing device therefor |
| 07/24/1991 | CN2081509U Far-infrared smoke-elimination energy-saving boiler |
| 07/24/1991 | CN2081508U Flat square tube electric heating apparatus |
| 07/24/1991 | CN2081507U Heating gas water-heating unit |
| 07/24/1991 | CN1013334B High power electrothermal convertor and processing technique thereof |
| 07/18/1991 | DE3927447A1 Direct heat-exchanger device - has slots through which fluid passes to run down walls of combustion chamber |
| 07/18/1991 | CA2034253A1 Water removal arrangement for a hot water heater |
| 07/17/1991 | CN2081060U Energy-saving heat pipe dual-purpose stove for steam and boiled water |
| 07/17/1991 | CN2081059U High-efficient multipurpose stove capable of removing smoke |
| 07/17/1991 | CN2081058U Fast water heater for self-regulating type various fuel cooking ranges |
| 07/16/1991 | CA1286388C Capacity control for integrated furnace |
| 07/16/1991 | CA1286199C Hot water supply system |
| 07/11/1991 | DE4042015A1 Road vehicle-heating system - has thermal generator supplying energy for transport of heat-transfer medium |
| 07/10/1991 | CN2080641U Energy-saving water heater on gas cooker |
| 07/10/1991 | CN2080640U Multiple-energy-source quick water heating device |
| 07/10/1991 | CN2080622U Multipurpose energy-saving stove |
| 07/09/1991 | WO1991010868A1 Method and device in closed heating plants |
| 07/09/1991 | US5030805 Condensation heating apparatus |
| 07/04/1991 | DE4000260A1 Liq. solid or gas-fuelled boiler - has heat-exchange pipes one above the other in columns |
| 07/03/1991 | EP0434977A1 Boiler |
| 07/03/1991 | CN2080149U Heat pipe type ordinary hot water boiler |
| 07/03/1991 | CN2080148U Hot gas burning heat-guide oil stove |
| 07/03/1991 | CN2080147U Power saving water heater |
| 07/03/1991 | CN1052731A Direct heating unit for steam heating water equipment |
| 07/02/1991 | US5027749 Gas fired |
| 06/26/1991 | CN2079722U Fast water heater by use of gasificating fuel oil |
| 06/25/1991 | US5027425 Flow-through heater, particularly for a coffee or tea maker |
| 06/25/1991 | CA1285207C Fuel spray combustion device |
| 06/20/1991 | DE4033537A1 Heat exchanger for gas appliance - consists of long extruded profiled tube |
| 06/19/1991 | EP0432460A1 Continuous-flow heater, in particular for brewing machines |
| 06/19/1991 | CN2079271U Side-setting double burning water tube ordinary pressure water heating boiler |
| 06/18/1991 | US5024210 Water heater construction |
| 06/16/1991 | CA2032262A1 Continuous flow heater, especially for machines to make brewed beverages |
| 06/13/1991 | WO1991008423A1 Partitioned hot water tank |
| 06/13/1991 | WO1991008422A1 Fluid-containment vessel |
| 06/12/1991 | EP0431601A2 Multi-type air heating apparatus utilizing phase variation of heating medium |
| 06/12/1991 | EP0431314A2 Heating boiler burning liquid or gaseous fuels |
| 06/12/1991 | CN2078861U Domestic isolated boiler for heating and water-boiling |
| 06/12/1991 | CN2078860U Energy-saving rapid electromagnetic water-heater |
| 06/12/1991 | CN2078578U Electric-heating cover |
| 06/12/1991 | CN1052181A Multifunctional energy-saving solar water heater |
| 06/11/1991 | US5023031 Method of making a foam insulated water heater |
| 06/11/1991 | US5022352 Burner for forced draft controlled mixture heating system using a closed combustion chamber |
| 06/11/1991 | CA1284811C Heater mechanism with thermoelectric power generator |
| 06/06/1991 | DE3939580A1 Drip prevention at outlet of container in heater - involves expansion unit inside container and connected to absorption funnel |
| 06/05/1991 | EP0430061A2 Boiler |
| 06/05/1991 | CN2078428U Multi-energy resources water-heating device |
| 06/04/1991 | US5020721 Rapid recovery gas hot water heater |
| 06/04/1991 | US5020512 Water heater construction and method of heating water |
| 06/04/1991 | US5020481 Thermal insulation jacket |
| 06/04/1991 | US5020480 Arrangement for securing and sealing a coil assembly to a boiler |
| 06/04/1991 | US5020479 Watertube boiler and its method of combustion |
| 05/29/1991 | EP0429380A1 Boiler for central heating and/or hot water production and central heating installation hot central heating and sanitary hot water production using this boiler |
| 05/29/1991 | EP0429371A1 Shell for a boiler for heating with heat-conveying fluid |
| 05/29/1991 | CN2077971U Pressureless hot-water heating boiler |
| 05/29/1991 | CN2077970U Ordinary pressure, multipurpose and two-way combustion water heater |
| 05/29/1991 | CN2077969U Electric water heater |
| 05/28/1991 | US5020127 Tankless electric water heater |
| 05/23/1991 | DE4040211A1 Water heating by microwave irradiation incapillary chamber - involves adjustment of microwave input by process computer acting upon measured water temps. and thermostat setting |
| 05/22/1991 | EP0428117A2 Boiler with exhaust gas recirculation to the burner |
| 05/22/1991 | CN2077528U Salar water heater |
| 05/22/1991 | CN2077527U Multipurpose energy-saving water-heating stove |
| 05/22/1991 | CN2077526U 便携式热水器 Portable heaters |
| 05/16/1991 | DE4034917A1 Circulating water heater with copper heat exchanger - is connected by special pipe layout with pump and three way valves to floor-heating system |
| 05/15/1991 | EP0427121A2 Method of making possible the quick tap of domestic water |
| 05/15/1991 | CN2077095U Fully-automatic miniature gas dual-purpose apparatus |
| 05/15/1991 | CN2077094U Movable gas water heater |
| 05/08/1991 | DE3936933A1 Heating device for gas in fluid flow - has insulating plastics housing incorporating connection cables for supplying enclosed electrical heating element |
| 05/08/1991 | CN2076654U Energy saving smokeless tea boiler |
| 05/08/1991 | CN2076653U Constant pressure hot-water cast-iron boiler |
| 05/08/1991 | CN2076652U Self-flow water heater using waste heat |
| 05/08/1991 | CN1051240A Fully automatic boiler for service of cold and hot water with energy saving and health care features |
| 05/02/1991 | EP0425363A1 Vapor pump with countercurrent exchanger for air and combustion products without intermediate fluid |
| 05/01/1991 | WO1991006813A1 Boiler heated by liquid or gaseous fuel |
| 05/01/1991 | CN2076219U Automatic continuous gas water boiling device |
| 05/01/1991 | CN2076218U High-efficiency tea boiler |
| 05/01/1991 | CN2076217U Cast-iron hot-water boiler |
| 05/01/1991 | CN2076216U High-efficiency multifunction hot-water boiler |
| 05/01/1991 | CN1051079A Energy-saving heating-conduction oil stove having single-channel and using gas fuels partly |
| 05/01/1991 | CN1012519B Vertical boiler |
| 05/01/1991 | CA2044282A1 Boiler capable of burning liquid or gaseous fuel |
| 04/30/1991 | US5011916 Preparation of 99m Tc radiopharmaceuticals |
| 04/24/1991 | EP0166746B1 Preparation of ?99m tc radiopharmaceuticals |
| 04/24/1991 | CN2075759U Water heater box |
| 04/24/1991 | CN2075758U Drink heater |
| 04/24/1991 | CN2075757U Refrigerator with power saving water heater |
| 04/18/1991 | DE3933957A1 Water heating boiler with combustion chamber and heat exchanger - has condensation helix attached to exhaust outlet and condensation collecting chamber |