| Patents for F22D 5 - Controlling water feed or water level; Automatic water feeding or water-level regulators (791) |
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| 07/16/1997 | CN2257894Y Timing alarming steam pot |
| 07/02/1997 | CN2257351Y Steam boiler with outer automatic water supply device |
| 06/18/1997 | CN1152090A Boiler with water-level monitoring tank |
| 05/21/1997 | CN1150226A Automatic fluid-supply apparatus for boiler system |
| 04/09/1997 | CN2251664Y Pressure auxiliary controller |
| 03/19/1997 | CN2249858Y Automatic counter-pressure alarming water feeder of boiler |
| 12/04/1996 | CN2241813Y Automatic regulated voltage water feeding regulator for water furnace |
| 10/23/1996 | CN2238377Y Stable pressure incrustant removing water supply equipment for composite boiler |
| 09/26/1996 | DE19510619A1 Method of water supply regulation for waste heat steam generator |
| 09/24/1996 | US5559293 Steam generation system mass and feedwater control system |
| 08/21/1996 | EP0727609A1 A steam-raising system |
| 07/10/1996 | CN2230869Y Non-pump water supplier for high or low pressure boiler |
| 07/09/1996 | US5533337 Feed water supply system of power plant |
| 06/19/1996 | CN2229598Y Automatic constant pressure water making-up apparatus for boiler |
| 05/28/1996 | US5519998 Apparatus for introducing feed water into a combined-cycle power station |
| 04/10/1996 | CN2224330Y Safety water-level self-control valve for atmospheric boiler |
| 02/21/1996 | CN2220585Y Sealed indirect cooling steam boiler |
| 02/07/1996 | CN2219428Y Set water feeding device for boiler |
| 09/20/1995 | CN2208168Y Automatic water-feeding device of steam boiler |
| 08/16/1995 | CN1106906A Arrangement for introducing the feed water into a combined-cycle power station |
| 08/16/1995 | CN1029529C Steam heating closed-circuit system |
| 08/01/1995 | CA2086181C Feedwater control for drum type steam generators |
| 07/05/1995 | CN1104744A Feed water supply system of power plant |
| 06/14/1995 | EP0657626A1 Feedwater supply arrangement in a combined cycle power plant |
| 06/07/1995 | CN2200112Y Non-pressure backwater controller for boiler |
| 04/18/1995 | US5406915 Steam generation system mass and feedwater control system |
| 03/15/1995 | CN2191970Y Automatic feed-water supply device for hot water circulating system within boiler |
| 03/08/1995 | CN2191354Y Level ball controller with low-level sustained alarm function |
| 02/08/1995 | CN1098490A Water level control valve for atmospheric pressure boiler |
| 10/26/1994 | CN2180888Y Steam boiler self-supply water device |
| 09/21/1994 | CN2177880Y Display apparatus for boiler level |
| 08/24/1994 | CN2175355Y Automatic steam generating apparatus |
| 03/09/1994 | CN1083575A Water-heating and steam dual-purpose boiler |
| 02/09/1994 | CN2155495Y Microcomputer multi-functional boiler water-level monitor |
| 02/02/1994 | EP0580798A1 Steam generation system mass and feedwater control system |
| 12/22/1993 | CN2150453Y Display for boiler water level |
| 12/08/1993 | CN2148889Y Self-adaptive water level controling equipment for boiler |
| 12/01/1993 | CN1079033A Electromechanic integrate digit control boiler water feeding pump group |
| 11/18/1993 | DE4215990A1 Boiler feed water pump control after coal pulveriser failure - using changes in sum of indicated speeds of fuel distributors for redn. of pumping rate until demand is restored |
| 10/05/1993 | US5249551 Steam generation system mass and feedwater control system |
| 08/25/1993 | CN2141026Y Alarm for automatic controlling and indicating liquid level |
| 08/11/1993 | CN2140021Y Boiler water level monitoring and controlling instrument |
| 06/16/1993 | CN2136391Y Pumpless water supply energy economizer for steam boiler |
| 01/26/1993 | CA1313089C Steam-boiler |
| 12/09/1992 | CN2124332U Integrated numerically controlled boiler water supply pump set |
| 11/04/1992 | CN2120954U Pressure regulating automatic supplementary water apparatus |
| 10/29/1992 | WO1992018808A1 Steam generation system mass and feedwater control system |
| 10/28/1992 | CN1065718A Steam heat supply closed circulation equipment |
| 09/22/1992 | US5148775 Feedwater control for drum type steam generators |
| 07/08/1992 | CN1062593A Automatic water supplement apparatus for boiler |
| 06/09/1992 | US5120490 Liquid filling method for a high-temperature and high-pressure vessel and apparatus therefor |
| 04/01/1992 | CN2100563U Electrooptical water-feeding automatic regulator |
| 03/25/1992 | CN2099909U Differential pressure type water make-up device |
| 03/25/1992 | CA2052005A1 Universal waterfeeder control circuit |
| 03/18/1992 | CN2099249U Liquid level control device |
| 01/22/1992 | CN2093967U Boiler water-feeding device |
| 10/15/1991 | US5056468 Steam generator |
| 09/03/1991 | US5045272 Fluid temperature balancing system |
| 08/07/1991 | EP0439765A1 Steam generator |
| 08/01/1991 | CA2035198A1 Steam generator |
| 07/31/1991 | CN2081937U Synchronous start-stop apparatus for outgoing water and returning water |
| 07/24/1991 | CN2081483U Boiler safety and liquid level control alarm instrument |
| 06/18/1991 | US5024802 Method for steam generator water level measurement |
| 06/12/1991 | CN2078843U Automatic speed-varying water-supply device for boilers |
| 04/10/1991 | CN2074857U Boiler water lever display control alarming instrument |
| 04/03/1991 | CN1012308B Anticorrosive electric contact and its manufacture method |
| 03/20/1991 | CN2073544U Displaying and controlling device of boiler water level |
| 03/20/1991 | CN2073543U Whole integrated and double-colored water level adjustor |
| 02/13/1991 | CN2071299U Automatic alarm low pressure boiler water leveler |
| 02/06/1991 | CN1011533B Double-floater water-level self-control device for boilers |
| 01/23/1991 | CN2069966U Automatic boiler water-level controlling and indicating device |
| 11/07/1990 | EP0258358B1 Steam generator |
| 03/28/1990 | CN2055228U Automatic photoelectric water level display and alarm |
| 01/10/1990 | CN2050927U Automatic water supply device boiler |
| 12/20/1989 | CN1038152A Automatically continuous water supply device for energy saving boilers |
| 11/21/1989 | US4881493 Steam generator |
| 11/07/1989 | CA1262664A1 Method and apparatus for supplying feedwater to a forced flow boiler |
| 10/18/1989 | CN2046176U Electronic dual colour water level observing and controlling alarm device of boiler |
| 10/04/1989 | CN2045464U Controller for boiler liquid level |
| 09/26/1989 | US4869210 Method of operating a once-through steam generator |
| 08/08/1989 | US4854121 Combined cycle power plant capable of controlling water level in boiler drum of power plant |
| 08/02/1989 | CN2042155U Vacuum water feeder with microcomputer-controlled pressure |
| 07/19/1989 | CN2041388U Dual-coloured display alarm controller for water-levels of 24 points |
| 07/12/1989 | CN2041051U All-integrated twocolour water-level display and alarm apparatus |
| 07/12/1989 | CN2041012U Self-spray steam automatic air-blast stove |
| 07/12/1989 | CN2040989U Water-level autocontrolled alarm device for boiler |
| 06/28/1989 | CN2040219U Controller for boiler level |
| 06/22/1989 | DE3741653A1 Method and apparatus for regulating the boiler feed water in steam boilers |
| 06/21/1989 | CN2039793U Automatic controller for water level and steam pressure of boiler |
| 06/14/1989 | CN2039384U Automatic water feed-control system for boiler |
| 05/31/1989 | CN2038597U Auto water compensating device for boiler |
| 05/31/1989 | CN1033211A Double-floater water-level self-control device for boilers |
| 05/17/1989 | CN2037811U Transistorized boiler-level controller |
| 05/02/1989 | US4825654 Steam plant and method of controlling same |
| 04/05/1989 | CN1032235A Anticorrosive electric contact and its manufacture method |
| 03/29/1989 | EP0308728A1 Method of operating a once-through steam generator |
| 03/29/1989 | EP0308596A1 Method for the regulation of the feed water flow in a steam plant |
| 03/15/1989 | CN2034236U Water-level remote-monitoring peeping glass for industrial boiler |
| 09/21/1988 | CN87216451U Water-level warner for boiler |
| 08/16/1988 | CA1240575A1 Anticipatory boiler feedpump suction head controller system |