Patents for F24H 9 - Details (27,146)
05/1990
05/30/1990CN2057736U Microcomputer fixed-temp. heating water unit
05/29/1990US4928664 Pulse combustion heating apparatus
05/23/1990CN2057503U Top-firing briquet coal backfire type boiler
05/23/1990CN2057501U Automatic pressure sensing controlled boiler
05/22/1990US4928204 Portable electrical appliance
05/22/1990US4926840 Pilot gas bypass system for fuel-fired furnaces
05/17/1990DE3908013C1 Heat-technological apparatus with enclosing housing
05/17/1990DE3838477A1 Method for controlling the circulation pump of a heating installation
05/17/1990DE3838130A1 Electric space-heating appliance
05/15/1990US4924816 Water heater with flame spill-out prevention arrangement
05/09/1990CN1042002A Non-pressure opened type hot water boiler and heating device
05/08/1990US4923969 Preparation of 99m Tc radiopharmaceuticals
05/03/1990DE3934629A1 Distributor for connecting radiator to heating system
05/02/1990EP0365640A1 Low-temperature heating boiler.
04/1990
04/24/1990US4919123 Filter base for forced air furnace
04/19/1990DE3835469A1 Boiler
04/19/1990DE3835096A1 Layered hot-water storage tank
04/19/1990DE3834898A1 Method and device for heating a container or pipelines, pumps
04/18/1990EP0363708A2 Heating apparatus for agents fluids
04/18/1990EP0363636A1 Heater with a combustion chamber with an inverted burner
04/18/1990CN2056226U Explosion-proof safety device for non-pressure hot-water boiler
04/17/1990US4917142 Secondary circulation unit
04/17/1990US4917077 Wall-mounted hot water boiler of the instant type
04/11/1990CN2055917U Domestic boiler for use of soft coal block
04/10/1990US4915620 Burner, in particular atmospheric pre-mix gas burner, and cooling rods therefor
04/10/1990US4915073 Boiler tube wall inspection system
04/05/1990DE3833697A1 Solar current through a gas or oil heating burner, as well as electrical illumination devices
04/04/1990CN1007453B Primary boiler for automatic operation
03/1990
03/29/1990DE3931095A1 Safety control for gas fired heater - using temperature sensors in two sites and programmed control circuit
03/29/1990DE3930170A1 Room-temp. control unit - has pipe holder bracket with adjustable component pressing against pipe
03/29/1990DE3832323A1 Water-side connection of a central-heating boiler
03/29/1990DE3832322A1 Heating boiler
03/29/1990DE3832320A1 Method for regulating a central-heating boiler
03/28/1990CN2055237U Electric boiler being able to control feeding water by electro-magnetic valve
03/28/1990CN2055235U Full-automatic power saving healthy cold and hot boiled water supply
03/28/1990CN1040863A Gas water-heater with temp.-controlled warming, oxygen deficit and fault self-checking alarming and auto-control exhaust
03/27/1990US4912300 Control device for heating appliance having two operating regimes
03/27/1990US4911108 Water heater construction
03/27/1990CA1267136A1 Air to air heat exchanger
03/27/1990CA1267106A1 Electroplating the interior of a stream generator tube
03/22/1990DE3830719A1 Electric flow heater
03/21/1990EP0359306A2 Boiler
03/21/1990CN1040672A Automatic water boiler controlled by pressure sensor
03/20/1990US4909274 Valve apparatus
03/15/1990DE3929314A1 Water heater which placed either on or beneath bench - is designed to increase water flow and avoid turbulence
03/14/1990EP0357925A1 Sacrificial anode with consumption indication and iron core for water reservoirs and water heaters
03/13/1990US4907543 Boiler air port cleaner
03/07/1990EP0356735A1 A heat exchanger
03/06/1990US4906818 Heater safety mechanism
03/06/1990US4906817 Overflow compensation device for a water heater using a variable volume bellows
03/06/1990US4905895 Heating device, particularly vehicle auxiliary heating device with a quadrangular heat exchanger
03/06/1990US4905527 Boiler tube wall inspection system
03/01/1990DE3829140A1 Piping distributors for central-heating systems
02/1990
02/22/1990WO1990001658A1 Heater mounting arrangement
02/22/1990WO1990001571A1 Sacrificial anode with consumption indicator and iron core for water tanks and water heaters
02/21/1990CN2053314U Low-position open expansion device for stablilizing pressure
02/20/1990US4901915 Control apparatus for water temperature and water flow rate
02/20/1990US4901676 Sealing and insulation device for the space between spaced apart surfaces
02/14/1990EP0354631A1 Connection fitting for a radiator with an electric heating element
02/14/1990EP0354406A2 Hood for collecting and conveying fumes originated from boilers or the like
02/14/1990CN2052875U 定时报警热水器 Water heater timer alarm
02/13/1990US4900896 Continuous flow water heater with magnetically-actuated flow switch
02/08/1990DE3925734A1 Monitoring circuit for timing element - provides start monitoring by switching pulse oscillator frequency to higher value
02/07/1990CN2052503U Temperature control switch for electric water heater
02/07/1990CN2052502U Anti-fouling device for domestic water heater
02/07/1990CN2052500U Atmospheric hot-water boiler
02/06/1990US4898150 Pressure balancing water heater dip tube turbulator attachment
02/06/1990US4898146 Heating appliance
02/06/1990US4898124 Scale agitator
02/01/1990DE3923805A1 Prevention of moisture condensation in boiler chimney - involves and moisture sensors which control fuel supply
02/01/1990DE3901243C1 Continuous-flow heater for liquids
02/01/1990DE3831065C1 Filling and emptying battery for a rapid-boiling water heater
01/1990
01/31/1990CN2052113U Quick-heater for shower and boiling water
01/31/1990CN1006660B Control device for superheating and scale of fluid heating equipment
01/25/1990WO1990000706A1 Electrical heating appliance
01/24/1990EP0351669A1 Electric heater
01/23/1990CA1264622A1 Water heater construction and method of heating water
01/23/1990CA1264621A1 Water heater construction and method of manufacture
01/18/1990DE3823868A1 Heat accumulator apparatus with insert
01/16/1990US4894516 Electrical storage heaters
01/11/1990DE3823388A1 Electrical storage heater
01/10/1990CN2050962U Multipower source quick water heating device
01/10/1990CN1038693A Hot-air type heater
01/04/1990DE3822238A1 Boiler with a tubular heating-gas flue
01/03/1990EP0349233A2 A method of, and apparatus for, heating a space
12/1989
12/27/1989EP0348304A2 Safety and regulating gas valve
12/27/1989EP0348302A1 Heat exchanger with fins for a water heater
12/20/1989EP0189446B1 Electronic power regulation device for an electric hot water apparatus with output temperature regulation
12/20/1989CN2049743U High-efficiency heating, energy-saving and anti-freezing autocontroller
12/19/1989US4888469 Double-regime electric heating convector
12/12/1989US4886018 Boiler element
12/12/1989US4886017 Group eight metalon support
12/07/1989DE3818070A1 Safety temperature cutout (limiter)
12/06/1989EP0344341A1 Electric storage heating apparatus
11/1989
11/30/1989DE3916142A1 Method for burning a fuel/primary-air mixture, as well as gas burner and sectional boiler for carrying out this method
11/30/1989DE3816817A1 Electric instantaneous water heater
11/23/1989DE3817441A1 Electric instantaneous water heater
11/16/1989DE3815687A1 Water guiding device of a flow heater
11/14/1989US4879959 Swirl combustion apparatus
11/14/1989US4879801 Cathodically protected water heater