| Patents for F24H 4 - Fluid heaters using heat pumps (3,737) |
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| 05/25/2000 | DE19955339A1 Hot water supply system has hot water producing fluid, and heated coolant flowing in opposite direction in heat exchanger; water heated by coolant on high pressure side is stored in tank |
| 03/21/2000 | CA2073337C Method and device in closed heating plants |
| 03/08/2000 | CN1050026C Heating equipment |
| 02/29/2000 | US6029471 Enveloping heat absorber for improved refrigerator efficiency and recovery of reject heat for water heating |
| 02/10/2000 | DE19834696A1 Chemical heat pump or reverse cycle heating system for covering heating and air-conditioning in buildings uses a minimum of two sorption reactors with internal circuitry |
| 01/05/2000 | EP0969255A2 Installation with a heat pump and an accumulator |
| 12/21/1999 | CA2073106C High efficiency heat exchanger |
| 12/07/1999 | US5996362 Water heater modified from refrigerated machine using two refrigerant paths and two different types of condensers working alternatively |
| 12/02/1999 | DE19820818A1 Heat pump with compact construction of heat and insulation housing |
| 10/28/1999 | WO1999054667A1 Method for treating a moist gas stream |
| 10/21/1999 | WO1999053249A1 Heat pump water heater and storage tank assembly |
| 10/21/1999 | WO1999053248A1 Heat pump water heater and storage tank assembly |
| 10/21/1999 | DE19829334C1 Heat pump for solar water heating |
| 09/07/1999 | US5946927 Heat pump water heater and storage tank assembly |
| 08/17/1999 | US5937663 Multipurpose heat pump system |
| 08/10/1999 | CA2177943C Heat pump hot water heater |
| 07/01/1999 | DE19757819A1 Device for deflecting exhaust gas mass flow into two or more heat zones |
| 06/02/1999 | CN2322086Y Hot-pump displacement type safety water-heater |
| 05/25/1999 | US5906109 Heat pump water heater and storage tank assembly |
| 05/20/1999 | WO1999024765A1 Heat exchanger for water heater using heat pump |
| 05/20/1999 | WO1999024764A1 Heat exchanger for water heater using heat pump |
| 05/12/1999 | EP0915305A2 Heat pump |
| 04/21/1999 | CN1214440A Double effect absorption cold or hot water generating machine |
| 04/14/1999 | EP0908687A1 Device for heating water |
| 09/15/1998 | US5806331 Water-based hot water heat pump |
| 09/02/1998 | CN2289995Y Water heater |
| 08/12/1998 | EP0857923A2 Method of operating a condensing boiler and boiler for implementing said method |
| 07/01/1998 | CN1186206A Improved water heater |
| 06/30/1998 | US5772113 Two-pipe heat pump system with isolated tank coil for domestic hot water |
| 06/09/1998 | US5761908 For a room within a building |
| 06/02/1998 | US5758507 Heat pump defrost control |
| 02/04/1998 | CN2273831Y Fluid heater using jetting steam for heating it |
| 11/04/1997 | US5682760 Apparatus and method for the generation of heat from the combustion of waste oil |
| 11/12/1996 | US5573182 Heat pump hot water heater |
| 09/24/1996 | US5558273 Space conditioning system for a building |
| 07/31/1996 | CN1127872A Separated heat supply means for direct combustion lithium bromide cold and hot water machine |
| 06/11/1996 | US5524454 Waste oil fired air conditioning apparatus |
| 05/29/1996 | EP0535106B1 Method of transferring heat from a low to a higher temperature |
| 04/30/1996 | US5511384 Method and apparatus for heat accumulation from refrigeration machine |
| 04/23/1996 | US5509274 High efficiency heat pump system |
| 11/30/1995 | WO1995032365A1 Power unit for high efficiency heat pump system |
| 11/14/1995 | US5465580 Cooling and heating water circulation apparatus of Vuilleumier heat pump |
| 09/20/1995 | CN2208201Y Hot-pump type fuel water heater |
| 07/05/1995 | EP0536133B1 Method and device in closed heating plants |
| 06/28/1995 | CN1104025A Heating equipment |
| 06/22/1995 | WO1995016885A1 Heat plant |
| 06/07/1995 | CN2200152Y Multifunctional hot water equipment |
| 02/23/1995 | WO1995005568A1 Automatic machine for heating and refrigerating of fluids |
| 12/06/1994 | US5370307 Air conditioner having high heating capacity |
| 12/01/1994 | DE4317441A1 Heat exchanger for transmitting thermal energy provided by a heat pump |
| 11/09/1994 | CN2182363Y Hot-pump type heating shower |
| 10/05/1994 | EP0618412A1 Refrigeration unit |
| 10/04/1994 | USRE34747 Absorption refrigeration and heat pump system with defrost |
| 10/04/1994 | US5351501 Method of transferring heat energy from a low to a higher temperature |
| 07/05/1994 | US5325821 Method and device in closed heating plants |
| 05/24/1994 | US5313874 High efficiency pool heating system and power unit |
| 02/09/1994 | EP0582282A1 Cold air refrigerating installation |
| 02/01/1994 | US5282364 Device in the thermoelectric heaters/coolers |
| 01/05/1994 | CN2152183Y Foldable external heating pumping water shower |
| 12/28/1993 | US5272891 Intermittent sorption cycle with integral thermosyphon |
| 12/02/1993 | DE4217610A1 Heating and/or cooling using periodically working absorption system - releasing working medium from absorption substance by supply of heat during heating phase, liquefied by heat removal then vaporised during following absorption phase |
| 11/23/1993 | US5263892 High efficiency heat exchanger system with glycol and refrigerant loops |
| 11/09/1993 | CA1324125C High efficiency heat-exchanger |
| 07/28/1993 | CN2139240Y Central cooling/heating air conditioner |
| 06/22/1993 | US5220807 Combined refrigerator water heater |
| 04/27/1993 | US5205133 High efficiency pool heating system |
| 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 |
| 02/24/1993 | CN2127481Y Air conditioning water heater |
| 01/19/1993 | CA1312798C Integrated apparatus for producing warm water |
| 12/29/1992 | US5174365 Air conditioning apparatus which selectively carries out a refrigerant collection operation |
| 06/23/1992 | US5125069 Blood warmer |
| 01/29/1992 | EP0468038A1 Absorption refrigeration and heat pump system with defrost |
| 01/02/1992 | EP0305416B1 Heat recuperation device, for use during the operation of a heat pump system |
| 12/26/1991 | WO1991019947A1 Method of transferring heat energy from a low to a higher temperature |
| 10/22/1991 | US5058392 Air conditioner heatbox |
| 10/01/1991 | US5052187 Water flow control for heat pump water heaters |
| 10/01/1991 | US5052186 Control of outdoor air source water heating using variable-speed heat pump |
| 09/11/1991 | EP0445510A2 Heating and electric generator plant |
| 09/05/1991 | DE4006742A1 Stirling engine heating and electric current generating plant - includes hydrocarbon-field boiler, heat exchangers as well as alternator driven by engine |
| 08/22/1991 | WO1991012470A1 Absorption refrigeration and heat pump system with defrost |
| 08/08/1991 | WO1991011666A1 A device in thermoelectric heaters/coolers |
| 07/09/1991 | WO1991010868A1 Method and device in closed heating plants |
| 04/09/1991 | CA1282604C Heat pump system and a method of operating same |
| 02/26/1991 | US4995241 High efficiency heat exchanger |
| 11/27/1990 | US4972679 Absorption refrigeration and heat pump system with defrost |
| 10/02/1990 | US4959975 Heat pump system |
| 09/11/1990 | US4955930 Variable water flow control for heat pump water heaters |
| 09/04/1990 | US4953361 Process for the operation of a generator absorption heat pump heating installation for space heating, water heating, etc. and generator absorption heat pump heating installation |
| 08/14/1990 | US4947656 Integrated apparatus for producing warm water |
| 08/02/1990 | DE4001525A1 Waermepumpe zur gleichzeitigen lieferung kalter und heisser fluids Waermepumpe for simultaneous delivery of cold and hot fluids |
| 07/05/1990 | DE3843913A1 Heat increaser |
| 04/24/1990 | US4918938 Heat exchanger |
| 04/24/1990 | US4918933 Add-on refrigerant boiler for electric heat pump |
| 03/27/1990 | US4910969 Apparatus for heat recovery by using a heat-pump system |
| 03/20/1990 | US4909045 High-efficiency heating unit for producing hot water |
| 03/06/1990 | US4905894 Refrigerant heating type air conditioner |
| 02/14/1990 | EP0354334A1 Integrated apparatus for producing warm water |
| 01/18/1990 | DE3822396A1 Heat pump installation with a variable temperature lift |