| Patents for F24H 1 - Water heaters having heat generating means, e.g. boiler, flow-heater, water-storage heater (28,567) |
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| 04/17/1991 | EP0422738A1 Apparatus for dispensing quantities of water of variable temperatures |
| 04/17/1991 | CN2075322U Energy saving water boiling device with arto-control cool and heat |
| 04/17/1991 | CN2075318U Energy saving fixed type gas water heater |
| 04/17/1991 | CN2075317U Multipurpose gas water heater |
| 04/17/1991 | CN2075316U Energy saving water heater by utilizing waste heat |
| 04/16/1991 | CA1283037C Atmospheric gas burner |
| 04/16/1991 | CA1283010C Wind-resistant outdoor heating appliance |
| 04/16/1991 | CA1283008C Heating bodies for gas water heaters |
| 04/11/1991 | DE4027206A1 Combined central heating and hot water supply system - has gas fired boiler and expansion tank |
| 04/11/1991 | DE3933680A1 Central heating boiler - has intermediate vessel installed inside cylindrical outer vessel |
| 04/10/1991 | CN2074961U Electric boiling device |
| 04/10/1991 | CN2074888U Shaped coal oil transmission high-temp., energy-saving stove |
| 04/10/1991 | CN2074887U Waste heat recovery and reuse device |
| 04/10/1991 | CN2074886U Pressureless boiler for railway coach continuous drinking water supply |
| 04/10/1991 | CN2074605U Multipurpose energy saving kettle |
| 04/09/1991 | US5006689 Vacuum insulated storage-type electric water heater having an external bubble pump heating unit |
| 04/09/1991 | US5005531 Thermal insulation jacket |
| 04/09/1991 | US5005530 Furnace radiant sections with vertical heat exchanger tubing, and convection section |
| 04/04/1991 | WO1991004523A1 Steam/water mixer |
| 04/04/1991 | DE4028502A1 Sectional boiler - has front section which also forms front of fire box |
| 04/03/1991 | EP0420220A1 Installation for the heating or cooling of fluids |
| 04/03/1991 | EP0419744A2 Boiling water units |
| 04/03/1991 | EP0419512A1 Induction heater |
| 04/03/1991 | CN2074434U Bituminous coal-fired smokeless boiler for boiling water, taking a bath and heating |
| 04/03/1991 | CN2074433U Quick-heating double-layer shower |
| 03/27/1991 | EP0419417A2 Vehicle and in particular transportation vehicle with emergency central heating plant installed on it |
| 03/27/1991 | CN2073998U Boiling type continuous boiling water supply device |
| 03/27/1991 | CN2073997U Quick and safety electric water heater |
| 03/27/1991 | CN2073996U High efficiency energy-saving hot water box for coal stove |
| 03/27/1991 | CN1050259A Anthracite briquette automatic inversion constant temp. boiled water syove |
| 03/26/1991 | US5002709 A tank with a jacket and a resin foamed in the spacing to form an insulating layer |
| 03/20/1991 | EP0418179A1 Electric boiler with cyclonic turbulence |
| 03/20/1991 | CN2073565U Automatic water heater in thermos flask |
| 03/20/1991 | CN1050084A Self-controlled device for boiling water |
| 03/19/1991 | US5000893 Method of making a foam insulated water heater |
| 03/13/1991 | EP0416132A1 Heating device |
| 03/13/1991 | CN2073094U High efficiency household boiler |
| 03/13/1991 | CN2073093U Roll-over heating water heater |
| 03/12/1991 | US4998970 Appliance construction including a sealing device |
| 03/12/1991 | US4998502 Apparatus for tempering fluid masses |
| 03/06/1991 | EP0414925A1 Boiler for burning liquid or gaseous combustibles |
| 03/06/1991 | CN2072662U Multi-functional stove for tea-water and bath |
| 03/06/1991 | CN2072661U Floor hot-water unit |
| 03/06/1991 | CN2072660U Two-purpose hot-water unit |
| 03/06/1991 | CN2072652U Non-smoke coal-saving stove |
| 03/05/1991 | US4998007 Electrically heated reservoir having a preassembled plural tube continuous flow heating unit |
| 03/05/1991 | US4996950 Double pipes for mixed boilers, to the methods of manufacturing such pipes and to the corresponding boilers |
| 03/05/1991 | US4996759 Sealing device for an appliance construction |
| 02/28/1991 | DE3928074A1 Storage system reducing risk of legionella in hot water systems - in which water circulates continuously from storage tank to water heater and mixing of waters of different temps. is prevented |
| 02/28/1991 | DE3927740A1 Burner for burning used oil - has combustion chamber which imparts swirling motion to combustion air |
| 02/27/1991 | EP0414583A1 Heat-exchanger and heater with such a heat-exchanger |
| 02/27/1991 | CN2072206U Safety fast energy saving water heater with multiple heating sources |
| 02/27/1991 | CN2072205U Heat storage water heater with multiple heating sources |
| 02/27/1991 | CN1049555A Electric water heater with electro-magnetic valve controlled feed |
| 02/27/1991 | CN1011815B Self-blowing water-heating furnace |
| 02/20/1991 | CN2071769U Household miniature water heater |
| 02/20/1991 | CN2071754U Suspension cone liner type energy-saving gas tea boiler |
| 02/20/1991 | CN1011737B Heating and boiling device with heat-accumulating block |
| 02/19/1991 | US4993402 Fuel efficient rapid response water heating module |
| 02/19/1991 | US4993368 Boiler tube structure |
| 02/13/1991 | CN2071311U Household stove |
| 02/13/1991 | CN2071310U Water heating stove |
| 02/12/1991 | US4992223 Water heater construction and method of making same |
| 02/12/1991 | US4992173 Boiler operating method with gases produced from bioreactor |
| 02/12/1991 | CA1280065C Fluid heater using pulsating combustion |
| 02/12/1991 | CA1280043C Foam insulated water heater and method of making the same |
| 02/07/1991 | DE3925549A1 Instantaneous throughflow water heater - comprises insulator casing for fluid passages heated by thick-film resistor layers |
| 02/06/1991 | EP0411669A2 Arrangement for liquid heating or cooling |
| 02/06/1991 | CN2070889U Rotating smoke eliminating tea boiler using briquette |
| 02/06/1991 | CN2070888U Zero mask electric heater special for cleaning water |
| 02/06/1991 | CN2070887U Shower with circulating type water tank |
| 02/06/1991 | CN2070869U Lining hanging type feul energy-saving tea boiler |
| 02/06/1991 | CN1049051A Sleeved coil boiler with direct flow |
| 02/05/1991 | US4990746 Electric water heater utilizing trapped air to provide expansion space |
| 02/05/1991 | US4989668 Liquid heating or cooling circulator |
| 01/30/1991 | CN2070427U Three-chamber normal pressure multi-purpose hot water boiler |
| 01/30/1991 | CN2070426U Miniature hot water heating boiler |
| 01/30/1991 | CN2070425U Al combined plate type hot-tube electric heater |
| 01/30/1991 | CN2070424U Water/fire tube pot type boiler |
| 01/30/1991 | CN2070423U Oil-burning vapouration fast water heater |
| 01/29/1991 | WO1991002199A1 Process and device for converting solar energy to heat |
| 01/29/1991 | US4988406 Insulation device and method of making same |
| 01/29/1991 | CA2065391A1 Process and device for converting solar energy to heat |
| 01/23/1991 | CN2069985U Quick coal-fired water heater |
| 01/17/1991 | DE4021250A1 Heat exchanger tube with steel core - has cast-iron fins cast in situ around core to make composite tube |
| 01/16/1991 | CN2069541U Energy-saving dust-proof tea boiler |
| 01/16/1991 | CN2069540U High-efficiency water heater |
| 01/16/1991 | CN2069539U Engergy-saving steam shower hozzle |
| 01/16/1991 | CN2069538U Domestic multiple energy resources, quick-acting and continuous hot water supply device |
| 01/15/1991 | US4985106 Insulation structure for appliances |
| 01/09/1991 | CN2069091U Vertical boiling water boiler using hand and reciprocuting charging-up coal |
| 01/09/1991 | CN2069089U Water heater for aluminum kettle |
| 01/09/1991 | CN2069088U Boiling water heater for automobiles |
| 01/09/1991 | CN2069087U Hanging furnace chamber model water heater |
| 01/02/1991 | EP0406173A2 Boiler |
| 01/02/1991 | EP0405621A2 Recuperative furnace |
| 01/02/1991 | CN2068664U Water storage electrothermal apparatus |
| 01/02/1991 | CN2068660U Group pipe directly burning water heater |
| 01/02/1991 | CN1048261A 液化石油气和电热水器 Liquefied petroleum gas and electric water heaters |
| 01/01/1991 | US4982068 Fluid permeable porous electric heating element |