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Class 431/19 - Responsive to combustion chamber pressure


Subclass of Class 431 - Combustion
Definition: Apparatus , in which a control of a burner element is effected
No. of patents: 65
Last issue date: 07/26/2011


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NumberTitleIssue Date
7985066Combustion blower control for modulating furnace
A furnace includes a combustion blower and one or more pressure switches. In some cases, the one or more pressure switches may be used to calculate one or more operating points for the combustion blower. Additional operating points may be calculated by interpolation...
07/26/2011
7380588Heat pump control system and method of operating to provide automatic backup heating modes
A heat pump type heating and air conditioning system includes a gas furnace or other auxiliary heat source and a thermostat and controller associated with the heat pump and the auxiliary heat source for automatically energizing the heat pump if the auxiliary heat so...
06/03/2008
7338629Integrated metal processing facility
A system and method for forming and heat treating a metal casting are provided. ...
03/04/2008
7331374Method and apparatus for assisting removal of sand moldings from castings
Disclosed is a method for dislodging a mold from a casting formed within the mold. The mold may be removed from the casting by scoring the mold and applying a force sufficient to cause the mold to fracture and break into pieces. Additionally, the mold may be fractur...
02/19/2008
7290583Methods and apparatus for heat treatment and sand removal for castings
A system and method for heat treating castings and removing sand cores therefrom. The castings are initially located in indexed positions with their x, y, and z coordinates known. The castings are passed through a heat treatment station typically having a series of ...
11/06/2007
7275582Methods and apparatus for heat treatment and sand removal for castings
A system and method for heat treating castings and removing sand cores therefrom. The castings are initially located in indexed positions with their x, y, and z coordinates known. The castings are passed through a heat treatment station typically having a series of ...
10/02/2007
7258755Integrated metal processing facility
An integrated metal processing facility in which molten metal is poured into a series of molds at a pouring station to form metal castings, which are then transferred to a heat treatment line. Prior to introduction of the castings into a heat treatment station of th...
08/21/2007
7101172Apparatus and methods for variable furnace control
A furnace control system for controlling a gas-fired induced-draft furnace having a variable speed inducer blower. A control apparatus, responsive to a signal corresponding to the magnitude of a pressure difference between an inlet and outlet of the combustion chamb...
09/05/2006
7048536Temperature-compensated combustion control
The “fuel-air pressure ratio” combustion control system for maintaining a selected fuel-air ratio for a combustion apparatus supplied with air at a substantially constant volumetric rate is improved by means for adjusting the flow rate of fuel in relation to tem...
05/23/2006
6978758High Efficiency rotary piston combustion engine
A computer controlled rotary piston engine includes a blower housing containing a rotatable impeller assembly, for pushing ambient air into the housing, and forcing the air to pass through a normally open valve mechanism into a combustion chamber. A plurality of fue...
12/27/2005
6910522Methods and apparatus for heat treatment and sand removal for castings
A system and method for heat treating castings and removing sand cores therefrom. The castings are initially located in indexed positions with their x, y, and z coordinates known. The castings are passed through a heat treatment station typically having a series of ...
06/28/2005
6901990Method and system for processing castings
A method and system of processing castings is provided in which one or more castings are deposited into a mobile furnace and moved from one station to another of a multi-station casting processing system. The interior of the mobile furnace is heated so as to maintai...
06/07/2005
6571817Pressure proving gas valve
A pressure proving gas valve insures safe and efficient operation of a fuel-burning appliance by monitoring combustion air pressure and appropriately controlling the valve based upon this air pressure. An air pressure sensor is incorporated into a pressur...
06/03/2003
6568933Apparatus to burn gases
A pressure balance unit mounts to a combustion chamber having a fluctuating negative interior pressure. The unit has a housing inner portion mounted to the combustion chamber, the housing inner portion having an inner end located within the combustion cha...
05/27/2003
6511312Swirler burner
Swirling-flow burner with a burner tube comprising a central oxidiser supply tube and an outer concentric fuel supply tube, the oxidiser supply tube being provided with a concentric cylindrical guide body having static swirler blades and a central concent...
01/28/2003
6464489Method and apparatus for controlling thermoacoustic vibrations in a combustion system
In a method of controlling thermoacoustic vibrations in a combustion system having a combustion chamber and a burner, the fluid shear layer forming in the region of the burner is acoustically excited. An apparatus for controlling thermoacoustic vibrations...
10/15/2002
6390806Pneumatic system for flame rollout and draft safeguard protection
A furnace is provided with a flame rollout protection system which operates through an existing excess-air control pneumatic circuitry to shut down the furnace in the event of a flame rollout condition. A fusible tube is attached at its one end to the pne...
05/21/2002
6336806Method for combustion of a liquid fuel in a combustion system, and a combustion system for carrying out the method
In a method for burning a liquid fuel in a combustion system (10) which comprises a combustion chamber (11) and at least one injection nozzle (13) through which liquid fuel is injected into the combustion chamber (11) in the form of a fuel spray (16) and ...
01/08/2002
6276929Method 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
6213758Burner air/fuel ratio regulation method and apparatus
Control system and method for regulating the air/fuel mix of a burner for a web dryer or a regenerative or recuperative oxidizer, for example. Differential air pressure is monitored between the air chamber of the burner and the enclosure into which the bu...
04/10/2001
6146596Soil remediation apparatus with safeguard system
The present invention is an improved apparatus and method for its use in the decontamination and remediation of soils laden with organic hydrocarbons and toxic inorganic compounds. The soil to be treated is placed in a soil treatment tray which is subsequ...
11/14/2000
5993195Combustion air regulating apparatus for use with induced draft furnaces
A combustion air regulating apparatus which is adapted for use with two stage induced draft furnaces and which allows such furnaces to be used with low cost AC inducer motors of the type having one or a small number of nominally fixed operating speeds. A ...
11/30/1999
5968320Non-recovery coke oven gas combustion system
A system for transporting and burning under negative pressure in a boiler a raw coke oven gas to produce steam energy. The system has the usual battery of coke ovens and corresponding ascension pipes connected to a collector main. Flushing liquor is spray...
10/19/1999
5784889Device for damping thermoacoustic pressure vibrations
A device for damping thermoacoustic pressure vibrations in a combustion chamber (1), in particular in the combustion chamber of a gas turbine, includes a pressure sensor (6) which is connected to the input of a regulating device (10), the regulating devic...
07/28/1998
5676536Raw gas burner and process for burning oxygenic constituents in process gas
Raw gas burner that maximizes fuel efficiency of the burner, minimizes residence time, and reduces or eliminates flame contact with the process air or gas in order to minimize NOx formation. Process air flow such as from the cold side of a heat exchanger ...
10/14/1997
5628303Radiant space heater for residential use
A compact gas-fired radiant space heater is adapted for residential use, having an output in the 20k BTU to 40k BTU/hr range and exterior dimensions small enough to allow it to be installed in a standard two foot by four foot suspended ceiling opening. A ...
05/13/1997
5522541Method for proving furnace high-heat pressure switch
In a two-stage furnace system, including a thermostat, at least one gas burner with a low and high-fire operating capability, an inducer fan having low and high speed operating settings, and a high-fire pressure switch, a method for handling the high-fire...
06/04/1996
5456597Intelligen transient eliminator for an ignition system
The present invention relates to an intelligent transient eliminator which allows a gas ignition system to prevent gas valves from being turned off by a pressure switch in response to a transient pressure wave. The transient eliminator is preferably provi...
10/10/1995
5363782Apparatus and process for combusting fluid fuel containing solid particles
Apparatus and process for improving atomization and combustion of fuel containing solid particles, wherein the fuel containing solid particles is ejected from an outlet port having a conical or trumpet end-like internal wall surface and a fuel atomizing f...
11/15/1994
5257574Coffee bean roasting device
A coffee bean roasting device for roasting coffee beans by applying hot air to the coffee beans. The coffee bean roasting device includes a detector for detecting a factor exerting influence upon the roasting state of coffee beans, and a controller for co...
11/02/1993
5244147Furnace 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
5234024Differential pressure regulator
A fuel pressure regulator controls the pressure differential across a nozzle which is subject to variations in exhaust gas backpressure having a solenoid actuated valve member which is actuable in response to signals from a controller to establish a prede...
08/10/1993
5186386Two stage furnace control
The present invention discloses a two stage furnace control. The control includes a gas valve, an ignitor, a low pressure switch, a high pressure switch and a control unit for enabling the inducer fan, the circulator fan, the ignitor, and the gas valve. T...
02/16/1993
5158446Combination pressure and temperature limit control for a fuel-fired, forced draft heating appliance combustion product exhaust system
A fuel-fired, forced draft heating appliance includes a draft inducer fan having an inlet connected to a vent hood, an outlet connectable to a vent pipe, and an interior housing region in which a negative pressure is generated during normal appliance oper...
10/27/1992
5145355Apparatus for active monitoring of combustion instability
An apparatus for controlling pressure instabilities in a combustion chamber. The apparatus includes a detector which detects combustion chamber pressure and outputs a signal indicative of that pressure. A controller then receives the output signal, delays...
09/08/1992
5044929Ignition control apparatus for pulse combustor
An ignition control apparatus for a pulse combustor, wherein the number of trials for energization of a spark electrode is calculated and memorized, the memorized number of trials is reset to an initial value or zero after ignition of the fuel-air mixture...
09/03/1991
5027789Fan control arrangement for a two stage furnace
The present invention involves a two stage furnace and a method of controlling the fans. In the furnace, a high pressure switch indicates whether sufficient air is present to support high combustion. Normally the furnace operates at one of the combustion ...
07/02/1991
4998877Blower burner
A blower burner is provided for a boiler heated with fluid fuels with a blower casing, which incorporates on one side the blower with the attached drive motor and where the fire tube of the burner comes out on the other side. The motor and the fire tube f...
03/12/1991
4982721Restricted intake compensation method for a two stage furnace
The present invention discloses a method of compensating for a restricted intake in a two stage furnace. The furnace includes low and high pressure switches for determining if sufficient air is present to support low and high combustion. When the furnace ...
01/08/1991
4978821Reverse flow prevention device for combustion apparatus
A reverse flow prevention device for combustion apparatuses control operated by electrical power, and which is provided with a combustion gas discharge tube for discharging the combustion process by-product. The reverse flow device comprising a reverse fl...
12/18/1990
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