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| Number | Title | Issue Date |
| 7849805 | System and method for the operation of a furnace that is operated with at least one coal pulverizer A primary air system for a combustion plant provides a flow of primary air to at least one coal pulverizer, which emits pulverized coal in a downstream direction to a furnace. The primary air system includes a first primary air line for feeding hot primary air to th... | 12/14/2010 |
| 6748880 | Boiler internal flue gas by-pass damper for flue gas temperature control A flue gas passage arrangement for a steam generator which permits adjustment of the heat transfer effectiveness of a final bank of heat exchanger surface to control a temperature of the flue gas flowing through and exiting from the flue gas passage and conveyed to ... | 06/15/2004 |
| 6681497 | Web dryer with fully integrated regenerative heat source and control thereof Integrated web dryer and regenerative heat exchanger, as well as a method of drying a web of material using the same. The apparatus and method of the present invention provides for the heating of air and the converting of VOCs to harmless gases in a fully... | 01/27/2004 |
| 6652272 | Device for sluicing a hot meal-form material In order to create a device like a shuttle sluice for sluicing or distributing a hot meal-form material flow, in particular for cement plant construction, whose shuttle valve or shuttle valves is or are easy and inexpensive to repair or renew in case of w... | 11/25/2003 |
| 6546897 | Thermodynamically activated flue damper The invention is directed to a thermodynamically activated flue damper for a gas water heater that includes a flue damper for controlling the passage of exhaust gases through the flue; and a thermally sensitive member that is capable of contracting when t... | 04/15/2003 |
| 6497230 | Air port damper An air port damper system for a recovery boiler employs plural louvers for altering the exit angle of air through an air port. Dampers are provided to enable adjustment of the flow through the device. Suitably, the device may be retracted away from the ai... | 12/24/2002 |
| 6481361 | Coal balancing damper A damper assembly for adjusting a full flow of the air-entrained coal traversing at least one annular conduit along a flow path, wherein the one conduit has a peripheral wall defining the entire cross-sectional area of the conduit, the damper assembly inc... | 11/19/2002 |
| 6276929 | Method for controlling kiln pressure A method for controlling kiln pressure for a shuttle kiln having an exhaust gas fan and an exhaust gas damper in an exhaust gas passage includes the steps of performing a control operation for controlling the number of revolution of the exhaust gas fan to... | 08/21/2001 |
| 6257156 | Wind box for a chemical recovery furnace The present document describes a wind box used in the air supply of a chemical recovery furnace, the wind box comprising a frame (1) having at least one air inlet opening (2) and at least one air supply opening (3) through which air is led from an air cha... | 07/10/2001 |
| 6257155 | Curved blade by-pass damper with flow control A damper vane assembly for controlling the flow of flue gas between a flue gas pass of a combustion vessel which generates flue gas and a selective catalytic reactor operable to catalytically treat flue gas in a combustion system is provided. The damper v... | 07/10/2001 |
| 6220188 | Windbox burner The windbox burner has a register casing (2) with ports (3) for inflow of combustion air, secondary air pipe (35) enclosed by the register casing and having inlet ports (36) for secondary air, a ring damper (20) coaxial with the register casing and axiall... | 04/24/2001 |
| 6076476 | Method of and apparatus for preventing emission of dioxins in incineration facility An apparatus for preventing the emission of dioxins in an incineration facility including an incinerator having a boiler, and an exhaust gas treatment facility for treating exhaust gas discharged from a flue of the boiler. This apparatus further includes ... | 06/20/2000 |
| 5997277 | Method and a device for recovery of energy from media containing combustible substances even at low concentration This invention relates to a method and device for recovery of energy from a medium containing combustible substances even at low concentrations. The method is characterized by raising the temperature of the medium in a regenerative combustor such as a rev... | 12/07/1999 |
| 5824275 | Secondary and tertiary air nozzle for furnace apparatus An air nozzle assembly for use in associated combustion apparatus which includes a first elongated housing having first and second axial extremities. The first axial extremity thereof is open to the interior of the first housing and tapers axially from a ... | 10/20/1998 |
| 5738021 | Adjustable sleeve damper assembly for a coal-fired furnace An air damper assembly for a coal-fired furnace in which a damper sleeve extends between two spaced walls adjacent the furnace in a manner to define an air inlet. A threaded support member is connected to the damper, and a threaded shaft is in threaded en... | 04/14/1998 |
| 5730070 | Apparatus for introducing gas recirculation to control steam temperature in steam generation systems An apparatus for introducing gas recirculation into a furnace to control steam temperature includes a hot air chamber for receiving hot air from an air preheater. The hot air chamber has at least one outlet communicating with the interior of the furnace. ... | 03/24/1998 |
| 5609522 | Combination damper and chimney cap apparatus A combination damper and chimney cap apparatus is provided to ventilate a fireplace and a flue connected thereto to provide a draft through the flue. The apparatus includes a platform constructed and arranged to be removably mounted to the flue and formed... | 03/11/1997 |
| 5292063 | Damper actuator A stack damper control apparatus for positioning a stack damper and controlling a fuel source in response to closing of a temperature sensitive switch. Limit switches comprising drop cams are coupled to the drive shaft of the damper. In response to a call... | 03/08/1994 |
| 5259411 | Flow control A flow control has a rotary gate residing within an internal flow space in a conduit. The gate is mounted for movement relative to the conduit between first and second positions, the gate in the first and second positions accounting for a different flow r... | 11/09/1993 |
| 5244147 | Furnace pressure control method A method of controlling the pressure in an incinerator for incinerating municipal refuse, industrial waste, etc. Exhaust gas from an incinerator typically passes through an exhaust gas cooler and an exhaust gas treating device and then discharged into the... | 09/14/1993 |
| 5239947 | Vent damper for gas water heater A vent damper for limiting the flow of ambient air in a hot water heater including a main burner, a pilot light burner and a central core for evacuation of exhaust gases from the main burner and pilot light burner. The vent damper comprises an inner shell... | 08/31/1993 |
| 5167192 | Damper controller for a chemical recovery furnace A controller for a damper in a chemical recovery furnace relieves physical engagement between the damper mechanism and an operating handle therefor when such handle is being repositioned. The damper is repositioned to prevent interference with an adjacent... | 12/01/1992 |
| 4981262 | Unit for supplying combustion air to a furnace An improved unit (10) which supplies combustion air (A) to a furnace (100) or hot water heater (200) is described. The unit includes a switch (59) which continues the operation of motor (14) and fans (12 and 15) in unit (10) until the hot flue gases (H) a... | 01/01/1991 |
| 4880376 | Method and apparatus for monitoring and calibrating damper position Damper position of a damper in a heating system is monitored. The damper is movable between end positions in response to movement of a motor shaft. The motor shaft moves in response to a movement request signal. A shaft position signal is received by a po... | 11/14/1989 |
| 4803931 | Flue restrictor A flue restrictor to control air flow in a combustion apparatus having an exhaust system that includes a flue. The restrictor has a housing to be attached in the flue. There is a first valve member located in the housing and a second valve member located ... | 02/14/1989 |
| 4779795 | Convector room heater incorporating a hot water boiler According to the present invention there is provided a boiler comprising a firebox, a control device controlling the flow of air into the firebox, a water jacket surrounding at least part of the firebox, a sensor to sense the temperature of the water in o... | 10/25/1988 |
| 4777932 | Counterweight static pressure-air flow damper assembly A barometric damper includes a swingably mounted damper blade having a first adjustable counterweight assembly lying in a common plane with the damper blade and mounted for rotation therewith. The torque arm mass loading can be varied. A second adjustable... | 10/18/1988 |
| 4770158 | Combustion with leakage resistant exhaust valve A combustor including a combustion chamber having two paths for removing combustion exhaust gases, a valve in one path, and means to provide, when the valve is in a closed position, pressure at a downstream side of the valve higher than the pressure insid... | 09/13/1988 |
| 4770108 | Two-way vent cap for controlled atmosphere furnace A vent cap for a heat treating furnace provides bidirectional pressure relief. The cap is weighted and balanced over the furnace vent such that the vent is closed as long as the furnace has a slightly positive internal pressure. If the internal pressure e... | 09/13/1988 |
| 4770160 | Vent damper An improved vent damper for oil or natural gas-fired hot water heaters includes a damper assembly incorporated into the exhaust duct above a hot water heater, and contains a lightweight, floating poppet closure slidably mounted on a reduced-diameter exhau... | 09/13/1988 |
| 4702178 | Emergency exhaust system for hazardous waste incinerator An emergency exhaust system (59) is provided for a mobile incineration system (10). A hinged gate (76) controls access to the emergency exhaust system (59), and operates only upon the sensing of a malfunction in one of a plurality of critical incineration... | 10/27/1987 |
| 4643862 | Refractory stove damper with catalytic effect Disclosed herein is a preferred process for making a catalyst. A catalyst such as is named in the title of this invention. The process begins with the chosing and blending the different refractories in order to necessitate the longevity of the damper. The... | 02/17/1987 |
| 4570549 | Splitter for use with a coal-fired furnace utilizing a low load burner An improved splitter for use with a coal-fired furnace utilizing a low load burner in which a splitter is provided in the main conduit leading from the pulverizer for splitting the stream of coal and air into two separate streams which are then fed to sep... | 02/18/1986 |
| 4553731 | Fail-closed, tight seal gas safety valve system A fail-closed gas safety valve system for blast furnace stove operations employing two tight seal butterfly valves, one a gas shutoff valve and the other a gas regulating valve, which together operate to prevent the leakage of hazardous gas into a blast f... | 11/19/1985 |
| 4526160 | Apparatus for controlling flow of combustion products Apparatus for cooperation with an associated flue having a first axis extending away from a point proximate to an associated combustion chamber which includes a funnel shaped member having first and second ends. The second end is larger than the first end... | 07/02/1985 |
| 4493311 | Guillotine damper A guillotine damper for use in exhaust or like duct systems which must be entered by men for servicing has its frame provided with guides extending about the flow path from one end of the opening by which the blade enters an air tight bonnet to the other ... | 01/15/1985 |
| 4487137 | Auxiliary exhaust system An auxiliary exhaust system for use with a flue includes a conduit communicating at one end with an opening formed in the flue wall and a blower operable to introduce auxiliary air into the flue through the conduit. The conduit is angled so that the auxil... | 12/11/1984 |
| 4484562 | Flexible disk damper A flexible disk damper which is capable of providing tight seals for a large diameter opening over a wide range of temperatures. Disks are made sufficiently flexible to compensate for inherent warpage in the damper seat by using a steel with a higher yiel... | 11/27/1984 |
| 4450344 | Damper drive system in a combined microwave and electric heater oven A combined microwave and electric heater oven includes a fan system for cooling a magnetron, and a damper for selectively introducing a forced air flow generated by the fan system into an oven cavity. A damper cam is secured to a drive shaft of a damper m... | 05/22/1984 |
| 4442798 | Vent assembly A vent assembly adapted for venting into the atmosphere hot burner exhaust gases from the flue exhaust port of a heating appliance within an enclosure, such assembly including an exhaust duct and a relief duct. The exhaust duct is connected at one end to ... | 04/17/1984 |
