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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 214. Отображено 100.
07-01-2016 дата публикации

METHOD OF OPERATING A GAS BURNER OF A GAS COOKING APPLIANCE AND GAS BURNER AND GAS COOKING APPLIANCE

Номер: US20160003483A1
Автор: Spanò Fabio
Принадлежит: Electrolux Appliances Aktiebolag

A gas burner () including a gas injector (), a gas supply line () connected to the gas injector () so as to feed gas to the gas injector (), and a single automatic gas valve () installed in the gas supply line () upstream the gas injector () so as to control gas supply to the gas injector (). During ordinary operational modes, the single automatic gas valve always is in an open status not exceeding a preset upper opening limit. During temporary boost operational modes the automatic gas valve is in an open state exceeding the upper opening limit. 121343354335959. Method of operating gas burner () of a gas cooking appliance () , which comprises a gas injector () , a gas supply line () connected to the gas injector () so as to feed gas to the gas injector() , and a single automatic gas valve () installed in the gas supply line () upstream the gas injector () so as to control gas supply to the gas injector () , wherein during ordinary operational modes (T1 , T3 , T4) , the single automatic gas valve () always is in an opening status not exceeding a preset upper opening limit (L) , and wherein during temporary boost operational modes (T2) the automatic gas valve () is in an opened state (LB) exceeding the upper opening limit (L).233. Method according to claim 1 , wherein the gas injector () has a predefined and fixed maximal gas flow rate claim 1 , and wherein during a boost operational mode (T2) claim 1 , the overall gas flow rate is limited by the fixed flow rate of the gas injector ().356. Method according to claim 1 , wherein setting respective operational modes (T1 claim 1 , T2 claim 1 , T3 claim 1 , T4) of the automatic gas valve () is carried out by an electronic control unit ().42929. Method according to claim 1 , wherein the gas burner () is operable in ordinary operational mode (T1 claim 1 , T3 claim 1 , T4) with a continuous power of an upper power limit (L) claim 1 , and wherein in the temporary boost operational mode (T2) claim 1 , the power of the gas ...

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Номер записи: 1
09-01-2020 дата публикации

FUEL CONNECTION UNIT

Номер: US20200009942A1
Автор: HAEFNER Michael, Jensen Hans
Принадлежит:

A fuel connection unit () for a fuel-operated vehicle heater () includes a connection unit body (), which can be arranged at a heater housing (). A fuel release line connection area () connects a fuel release line leading to a combustion chamber. A fuel feed line connection area () projects from the connection unit body () for connecting a fuel feed line. At least one functional unit (), for influencing the flow of fuel in a fuel flow volume () formed in the connection unit body (), is provided in the connection unit body (). 1. A fuel connection unit for a fuel-operated vehicle heater , the fuel connection unit comprising:a connection unit body to be arranged at a heater housing, the connection unit body having a fuel flow volume in the connection unit body;a fuel release line connection area projecting from the connection unit body for connecting a fuel release line leading to a combustion chamber;a fuel feed line connection area projecting from the connection unit body for connecting a fuel feed line; andat least one functional unit for influencing a flow of fuel in the fuel flow volume, the at least one functional unit being provided in the connection unit body.2. A fuel connection unit in accordance with claim 1 , wherein the at least one functional unit comprises a pulsation damper.3. A fuel connection unit in accordance with claim 2 , wherein the pulsation damper comprises a pressure equalization volume and a flexible separating element separating the pressure equalization volume from the fuel flow volume.4. A fuel connection unit in accordance with claim 3 , wherein:the pulsation damper further comprises a pulsation damper body providing the pressure equalization volume;the flexible separating element is fixed at the pulsation damper body such that the flexible separating element closes the pressure equalization volume.5. A fuel connection unit in accordance with claim 3 , wherein a damper mounting recess receiving the pulsation damper is formed in the ...

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Номер записи: 2
11-01-2018 дата публикации

METHOD OF AND SYSTEM FOR FLAME SENSING AND DIAGNOSTIC

Номер: US20180010823A1
Автор: ENGLER MICHAEL
Принадлежит: Lennox Industries Inc.

A method of determining presence of a flame in a furnace of a heating, ventilation, and air conditioning (HVAC) system. The method comprises determining, using a controller, whether a processor signal (G) is active, responsive to a determination that the processor signal (G) is active, determining, using the controller prior to assertion of a flame-test input control signal, an output state of a first comparator, responsive to a determination that the output state of the first comparator is high, determining, using the controller prior to assertion of the flame-test input control signal, an output state of a second comparator, and responsive to a determination that the output state of the second comparator is low, transmitting, using the controller, a notification that a flame is present. 1. A method of determining presence of a flame in a furnace of a heating , ventilation , and air conditioning HVAC) system , the method comprising:determining, using a controller, whether a processor signal (G) is active;responsive to a determination that the processor signal (G) is active, determining, using the controller prior to assertion of a flame-test input control signal, an output state of a first comparator;responsive to a determination that the output state of the first comparator is high, determining, using the controller prior to assertion of the flame-test input control signal, an output state of a second comparator; andresponsive to a determination that the output state of the second comparator is high, transmitting, using the controller, a notification that a problem exists.2. The method of further comprising:asserting the flame-test input control signal;determining, using the controller, whether the output state of the first comparator flips from high to low and the output state of the second comparator flips from low to high;responsive to a determination that the output state of the first comparator does not flip from high to low or the output state of the second ...

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Номер записи: 3
09-01-2020 дата публикации

DYNAMIC MULTI-LEGS EJECTOR FOR USE IN EMERGENCY FLARE GAS RECOVERY SYSTEM

Номер: US20200011530A1
Автор: Ansari Nisar Ahmad K., Salu Samusideen Adewale, Soliman Mohamed A.
Принадлежит: Saudi Arabian Oil Company

A system and method for recycling flare gas back to a processing facility that selectively employs different numbers of ejector legs depending on the flare gas flowrate. The ejector legs include ejectors piped in parallel, each ejector has a flare gas inlet and a motive fluid inlet. Valves are disposed in piping upstream of the flare gas and motive fluid inlets on the ejectors, and that are selectively opened or closed to allow flow through the ejectors. The flowrate of the flare gas is monitored and distributed to a controller, which is programmed to calculate the required number of ejector legs to accommodate the amount of flare gas. The controller is also programmed to direct signals to actuators attached to the valves, which open or close the valves to change the capacity of the ejector legs so they can handle changing flowrates of the flare gas. 1. A system for handling a flow of flare gas comprising:a piping circuit comprising legs of tubulars piped in parallel that are selectively online; each ejector comprising,', 'a low pressure inlet in selective communication with a source of the flare gas,', 'a high pressure inlet in selective communication with a source of motive gas, and', 'a mixing portion where flare gas and motive gas form a combination;, 'an ejector in each of the legs and where a one of the ejectors has a design flowrate that is approximately equal to an anticipated minimum flowrate of the flare gas,'}a controller system for bringing a quantity of the legs online that have a cumulative capacity that is at least as great as a measured flowrate of the flare gas; anda discharge gas header having an end coupled with a processing facility, and that selectively receives a flow of the combination.2. The system of claim 1 , wherein a number of the legs of tubulars is approximately equal to an anticipated maximum flowrate of the flare gas divided by the design flowrate of the ejectors.3. The system of claim 1 , wherein all of the ejectors have the same ...

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Номер записи: 4
17-01-2019 дата публикации

FLAME ROD

Номер: US20190017703A1
Автор: Akagi Kazuyuki, Iwata Yoshinari, Miyajima Yoshiaki, Ojiro Takashi, TAKEUCHI Masaru
Принадлежит:

A flame rod () including: a rod portion () made of a metal material containing aluminum; and a protective cover layer () containing a cover material having high conductivity and high heat resistance, wherein the protective cover layer () covers a surface of an insertion portion (A) of the flame rod (), and the protective cover layer () has a thickness of 0.002 mm or more and less than 0.1 mm. 1. A flame rod comprising:a rod portion made of a metal material containing aluminum; anda protective cover layer containing a cover material having high conductivity and high heat resistance, whereinthe protective cover layer covers a surface of at least an insertion portion of the rod portion, the insertion portion being inserted into flame, andthe protective cover layer has a thickness of 0.002 mm or more and less than 0.1 mm.2. The flame rod according to claim 1 , whereinthe cover material of the protective cover layer contains lanthanum-strontium-manganese oxide.3. The flame rod according to claim 2 , whereinthe rod portion has a groove extending from the insertion portion to a non-insertion portion on the surface thereof, the non-insertion portion being disposed outside the flame.4. The flame rod according to claim 2 , further comprising an alumina layer and an alumina-manganese compound layer in order from a rod portion side at an interface between the rod portion and the protective cover layer. The present application claims a priority based on a Japanese Patent Application No. 2017-136091 filed on Jul. 12, 2017, the content of which is hereby incorporated by reference in its entirely.The present invention relates to a flame rod. Especially, the present invention relates to the flame rod used in a combustion device such as a water heater or a heat source device for a room heater.A rod portion of a flame rod used in a combustion device such as a water heater or a heat source device for a room heater is exposed to flame of a burner to be heated at a temperature of 1,000 ...

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Номер записи: 5
21-01-2021 дата публикации

Water Heater Pilot Operation

Номер: US20210018222A1
Автор: Boros Jozef, Chaudhry Raheel A., Kidd Larry D.
Принадлежит:

A method of controlling water heater pilot flame ignition includes receiving, by a controller of a water heater, a user input and controlling a pilot gas valve to start a gas flow to a pilot burner in response to the user input. The method further includes, in response to the user input, controlling, by the controller, an igniter to generate an ignition spark for lighting a pilot flame. The method also includes controlling, by the controller, the pilot gas valve to maintain the gas flow to the pilot burner if the pilot flame is lit. 1. A method of controlling water heater pilot flame ignition , the method comprising:receiving, by a controller of a water heater, a user input;controlling, by the controller, a pilot gas valve to start a gas flow to a pilot burner in response to the user input;in response to the user input, controlling, by the controller, an igniter to generate an ignition spark for lighting a pilot flame at the pilot burner; andcontrolling, by the controller, the pilot gas valve to maintain the gas flow to the pilot burner if the pilot flame is lit.2. The method of claim 1 , further comprising determining whether the pilot flame is out after being lit.3. The method of claim 1 , further comprising controlling claim 1 , by the controller claim 1 , the pilot gas valve to stop the gas flow to the pilot burner if the pilot flame is out after being lit.4. The method of claim 1 , further comprising:determining, by the controller, whether the pilot flame is lit; andproviding, by the controller, a notification indicating whether the pilot flame is lit.5. The method of claim 4 , wherein the notification includes a visual notification or an audio notification.6. The method of claim 4 , wherein the notification includes a notification message transmitted wirelessly or via a wired connection.7. The method of claim 1 , further comprising:determining, by the controller, whether the pilot flame is out after being lit; andproviding a notification indicating whether the ...

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Номер записи: 6
24-01-2019 дата публикации

Knob assembly and appliance having knob assembly

Номер: US20190024903A1
Автор: Yeonsik HA
Принадлежит: LG ELECTRONICS INC

A knob assembly and an appliance having a knob assembly are provided. The knob assembly may include a knob configured to be rotatably installed, a knob ring configured to surround the knob and to be rotated independently from the knob, a spring configured to provide an elastic force so as to return the knob ring toward an initial position when the knob ring is rotated to a position spaced apart from the initial position, and a magnetic force provider configured to provide a magnetic force to return the knob ring to the initial position when the knob ring is at a position adjacent to the initial position.

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Номер записи: 7
05-02-2015 дата публикации

SYSTEM AND METHOD OF CONTROLLING COMBUSTION AND EMISSIONS IN GAS TURBINE ENGINE WITH EXHAUST GAS RECIRCULATION

Номер: US20150033749A1
Автор: Davis, JR. Lewis Berkley, Minto Karl Dean, Slobodyanskiy Ilya Aleksandrovich
Принадлежит:

In one embodiment, a system includes a turbine combustor having a combustor liner disposed about a combustion chamber, a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, a flow sleeve disposed at an offset about the combustor liner to define a passage, and a barrier within the passage. The head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber. The passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor. The gas flow includes a substantially inert gas. The barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage. 1. A system comprising: a combustor liner disposed about a combustion chamber;', 'a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, wherein the head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber;', 'a flow sleeve disposed at an offset about the combustor liner to define a passage, wherein the passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor, wherein the gas flow comprises a substantially inert gas; and', 'a barrier within the passage, wherein the barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage., 'a turbine combustor comprising2. The system of claim 1 , wherein the head end comprises a first fuel nozzle configured to direct the first fuel flow into the combustion chamber claim 1 , and a second fuel nozzle configured to direct a second fuel flow into the combustion chamber claim 1 , wherein ...

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Номер записи: 8
09-02-2017 дата публикации

AIR INLET DAMPER

Номер: US20170038094A1
Автор: Arnold J. Eric, Fitzgerald Janice, II George W., Kraus, Lee Duane A., Poehlman Robert Frederick, Smith Timothy Mitchel, Thompson Chad Taylor
Принадлежит:

A fuel fired, atmospheric water heater has a burner positioned inside a combustion chamber. All combustion air entering the combustion chamber must pass through a damper. The damper is operable to adjust the flow resistance to combustion air entering the combustion chamber. The damper is biased to a closed position such that during non-firing periods of the water heater, the damper significantly reduces the flow rate of combustion air being provided to the combustion chamber reducing standby heat loss. An actuator is in fluid communication with a fuel supply line such that when pressurized fuel is provided to the burner, the pressurized fuel causes the actuator to move the damper to an open position to permit operative combustion air delivery to the combustion chamber during firing periods of the water heater. 1. A water heater comprising:a combustion chamber;a burner disposed in the combustion chamber;a fuel valve operable to adjust a flow rate of fuel between a first flow rate and a second flow rate greater than the first flow rate;a fuel supply line communicating between the burner and the fuel valve for supply of pressurized fuel from the fuel valve to the burner; a damper movable between a first position corresponding to a first resistance to air entering the combustion chamber and a second position corresponding to a second resistance to air entering the combustion chamber, wherein the first resistance is greater than the second resistance;', 'an actuator operable to move the damper between the first position and the second position;', 'a conduit communicating between the actuator and the fuel valve such that the actuator moves the damper to the first position in response to the first flow rate and the actuator moves the damper to the second position in response to the second flow rate., 'an air inlet assembly mounted to the combustion chamber and operable to permit combustion air to enter the combustion chamber, the air inlet assembly including2. The water ...

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Номер записи: 9
07-02-2019 дата публикации

SCALABLE PULSE COMBUSTOR

Номер: US20190041091A1
Автор: MOVASSAGHI Mehrzad
Принадлежит:

A scalable pulse combustor that can be deployed as the heat exchanger in high efficiency, low NOx condensing boilers, water heaters and steam generators is provided. The combustor generally comprises an annular burner coil with a burner flange for accommodating the nozzle of a conventional burner/blower fitted into the central aperture thereof; a spaced-apart opposite annular spreader coil with a heat exchange hub fitted into the central aperture thereof; and a plurality of annular intermediate coils. Each of the burner, spreader and intermediate coils are preferably formed of spiral wound stainless steel tubing, with each winding directly abutting the preceding winding so as to create an annular wall. The heat exchange hub functions as a secondary heat exchanger with its own independently controllable coolant flow. 1. A scalable pulse combustor for use with a conventional burner , the pulse combustor comprising:an annular burner coil or plate with a burner flange for accommodating the conventional burner fitted into a central aperture thereof;a spaced-apart opposite annular spreader coil or plate with a heat exchange hub fitted into a central aperture thereof; and wherein a combustion chamber is defined between the burner coil or plate and the spreader coil or plate, and a plurality of tailpipe regions are defined on both sides of each of the at least one annular intermediate coils;', 'wherein each of the burner, spreader and intermediate coils or plates comprises a coolant passageway for conducting coolant therethrough, and an inlet and outlet for the coolant passageway; and', 'wherein the heat exchange hub comprises a coolant passageway for conducting coolant therethrough, and an inlet and outlet for the coolant passageway., 'at least one annular intermediate coil or plate located in spaced-apart relationship between and substantially parallel to the burner coil and the spreader coil;'}2. A heat exchanger comprising the scalable pulse combustor of in combination ...

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Номер записи: 10
21-02-2019 дата публикации

INDUSTRIAL INTERNET OF THINGS SMART HEATING SYSTEMS AND METHODS THAT PRODUCE AND USE HYDROGEN FUEL

Номер: US20190056107A1
Автор: Cella Charles Howard, Desai Mehul, Duffy, GOPAL Vimal M., HABEEBULLA Riswin Mangarathayyil, Jr. Gerald William, KM Nabeel, MAJEED Thaher, McGuckin Jeffrey P., MOHAN Nithin, SHRIDHAR Praveen, TP Sanjo Sen, VALAPPIL Vijeesh Thattante
Принадлежит: Strong Force IOT Portfolio 2016, LLC

An intelligent heating system device is provided with processing, communications, and other information technology components, for remote monitoring and control and various value added features and services, embodiments of which use a renewable energy-powered electrolyzer to produce hydrogen as an on-demand fuel stream for a heating element of the heating system. 1. A cooking system , comprising:an electrolyzer for producing hydrogen fuel from water; andat least one heating element, the heating element controlled by a processor and adapted to use the hydrogen fuel under control of the processor; wherein the processor is connected to a network to enable communication to a remote server, the remote server having at least one module for providing at least one of remote monitoring and control of the operation of the cooking system.2. The system of claim 1 , wherein the system further comprises a low-pressure hydrogen storage system for storing the hydrogen fuel produced by the electrolyzer.3. The system of claim 1 , wherein the system further comprises a renewable energy system for powering the electrolyzer to produce the hydrogen fuel.4. The system of claim 3 , wherein the renewable energy system is at least one of a solar power system claim 3 , a wind power system and a hydro-power system.5. The system of claim 1 , further comprising a liquid propane fuel system for providing fuel to the cooking system claim 1 , wherein the cooking system includes a fuel control module in operative connection with the processor to control the use of the liquid propane fuel and the hydrogen fuel for use by the cooking system.6. The system of claim 1 , further comprising at least one interface whereby a system external to the cooking system at least one of monitors the cooking system claim 1 , controls the cooking system and obtains data collected by the cooking system via interaction with the at least one remote server.7. The system of claim 6 , wherein the interface is at least one of ...

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Номер записи: 11
20-02-2020 дата публикации

HVAC MONITORING APPARATUS AND METHOD

Номер: US20200056793A1
Автор: ETEMADI Sobhan
Принадлежит:

The invention relates to an HVAC monitoring apparatus. The HVAC monitoring apparatus monitors the carbon monoxide, pressure, and temperature inside the air duct network of an HVAC system, directly above the furnace. The apparatus can send detailed information wirelessly through the cloud. 1. An apparatus for monitoring a HVAC system from a plenum of the HVAC system in which airflow generated by the HVAC system travels through , the apparatus comprising:a control module with an air inlet opening formed thereon, the control module coupled to an exterior surface of the plenum, so as to expose the air inlet opening to ambient air outside of the plenum;a probe assembly with an internal cavity, the probe assembly coupled to the control module and extending therefrom into the plenum so that the probe assembly is at least partially in a path of the airflow, wherein the internal cavity is in fluid communication with the air inlet opening;at least one sensing element is arranged within the probe assembly for monitoring at least one aspect of the HVAC airflow; andan air displacement means in fluid communication with the internal cavity;wherein the air displacement means is configured to displace air inside the internal cavity.2. The apparatus of claim 1 , wherein the probe assembly is a coaxial tube comprising an inner tube and an outer tube.3. The apparatus of claim 2 , wherein the internal cavity is defined by the space between the inner tube and the outer tube in coaxial alignment.4. The apparatus of claim 1 , wherein the sensing element is a differential air pressure sensor claim 1 , which comprisesa first sensor terminal configured to detect ambient air pressure outside of the plenum, anda second sensor terminal configured to detect air pressure of the airflow inside the plenum;wherein the differential air pressure sensor is configured to determine a pressure difference value between sensor data generated from the first and second sensor terminals.5. The apparatus of ...

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Номер записи: 12
28-02-2019 дата публикации

METHOD FOR SELECTION OF OPTIMAL ENGINE OPERATING CONDITIONS FOR GENERATING LINEARIZED MODELS FOR ON-BOARD CONTROL AND ESTIMATION

Номер: US20190063333A1
Автор: BENGEA SORIN, SIMMONS JEFFREY C.
Принадлежит: UNITED TECHNOLOGIES CORPORATION

A system for generating a base point database for use by a full authority digital engine control (FADEC) to control a gas turbine engine includes a memory configured to store a model of the gas turbine engine. The system also includes a model generation processor coupled to the memory and designed to perform an initial simulation of the gas turbine engine using the model to determine ranges of sensitivity of desired engine parameters throughout an operating envelope, divide the operating envelope into a multiple regions based on the ranges of sensitivity of the desired engine parameters, select multiple combinations of base points within each of the multiple regions, perform an additional simulation of the gas turbine engine to determine an accuracy of interpolation between each of the multiple combinations of base points for each of the multiple regions, and select final base points from the multiple combinations of base points based on the accuracy. 1. A system for generating a base point database for use by a full authority digital engine control (FADEC) to control a gas turbine engine during flight , the system comprising:a memory configured to store a model of the gas turbine engine; and perform an initial simulation of the gas turbine engine using the model to determine ranges of sensitivity of desired engine parameters throughout an operating envelope,', 'divide the operating envelope into a multiple regions based on the ranges of sensitivity of the desired engine parameters,', 'select multiple combinations of base points within each of the multiple regions,', 'perform an additional simulation of the gas turbine engine to determine an accuracy of interpolation between each of the multiple combinations of base points for each of the multiple regions, and', 'select final base points from the multiple combinations of base points based on the accuracy., 'a model generation processor coupled to the memory and configured to2. The system of claim 1 , wherein the ...

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Номер записи: 13
28-02-2019 дата публикации

PYROPHORIC LIQUID IGNITION SYSTEM FOR PILOT BURNERS AND FLARE TIPS

Номер: US20190063743A1
Автор: Al Abbas Ali, Soliman Mohamed
Принадлежит:

Described herein are methods and systems for using pyrophoric liquids to ignite combustible gas. 1. A method of burning a combustible waste gas , the method comprisingexposing at least one pyrophoric liquid to air to create a flame;contacting the flame with a pilot gas in the presence of a pilot burner to thereby ignite the pilot burner; andexposing the combustible waste gas to the ignited pilot burner, thereby burning the combustible waste gas.2. The method of claim 1 , wherein the at least one pyrophoric liquid comprises at least one of an alkylaluminum claim 1 , an alkyllithium claim 1 , an alkenyllithium claim 1 , an aryllithium claim 1 , an alkynyllithium claim 1 , an alkylzinc claim 1 , and an alkylborane.3. The method of claim 2 , wherein the at least one pyrophoric liquid comprises at least one of an alkylaluminum and an alkylborane.4. The method of claim 3 , wherein the at least one pyrophoric liquid comprises triethylaluminum claim 3 , triethylborane claim 3 , or a combination thereof.5. The method of claim 4 , wherein the at least on pyrophoric liquid comprises a mixture of triethylaluminum and triethylborane.6. A flare ignition system comprising:a. a pyrophoric liquid storage unit configured to an injection system;b. a flare tip; andc. a detector configured to monitor a flame.7. The flare ignition system of further comprising:d. a control valve configured to the injection system.8. The flare ignition system of claim 7 , wherein the control valve is configured to receive a signal from the detector.9. The flare ignition system of claim 8 , wherein the signal from the detector to the control valve causes the injection system to pump at least one pyrophoric liquid.10. The flare ignition system of claim 6 , wherein the detector comprises at least one of a thermocouple temperature sensor capable of measuring temperature and an infrared sensor capable of measuring infrared radiation.11. The flare ignition system of claim 10 , wherein a change in temperature ...

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Номер записи: 14
28-02-2019 дата публикации

VIBRATION CONTROL FOR A GAS TURBINE ENGINE

Номер: US20190063747A1
Автор: Mollmann Daniel Edward
Принадлежит:

A method for operating a gas turbine engine includes receiving data indicative of an operational vibration within a section of the gas turbine engine; and providing electrical power to a shaker mechanically coupled to one or more components of the section of the gas turbine engine to generate a canceling vibration to reduce or minimize the operational vibration within the section of the gas turbine engine. 1. A method for operating a gas turbine engine comprising:receiving data indicative of an operational vibration within a section of the gas turbine engine; andproviding electrical power to a shaker mechanically coupled to one or more components of the section of the gas turbine engine to generate a canceling vibration to reduce or minimize the operational vibration within the section of the gas turbine engine.2. The method of claim 1 , wherein the section of the gas turbine engine is a combustion section of the gas turbine engine.3. The method of claim 2 , wherein receiving data indicative of the operational vibration within the combustion section of the gas turbine engine comprises receiving data from one or more accelerometers within the combustion section of the gas turbine engine.4. The method of claim 3 , wherein the one or more accelerometers are configured to measure a vibration of one or more of a combustor liner of a combustor within the combustion section of the gas turbine engine claim 3 , a fuel nozzle within the combustion section of the gas turbine engine claim 3 , a fuel manifold within the combustion section of the gas turbine engine claim 3 , or a combustor case within the combustion section of the gas turbine engine.5. The method of claim 1 , wherein receiving data indicative of the operational vibration within the section of the gas turbine engine comprises receiving data indicative of at least one of a frequency claim 1 , an amplitude claim 1 , or a phase of the operational vibration.6. The method of claim 5 , wherein providing electrical power ...

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Номер записи: 15
27-02-2020 дата публикации

VALVE POSITION CONTROL

Номер: US20200063890A1
Автор: Fedor Milan, Senkyr Jiri
Принадлежит:

A method for calibrating a position of a control valve within a gas valve assembly for controlling fuel flow to a combustion appliance. The method may include moving the control valve to a second end stop, moving the control valve from the second end stop to a first end stop while counting a number of steps traveled by a stepper motor driving the control valve, and comparing the counted number of steps traveled from the second end stop to the first end stop to a reference value stored in a memory of the controller. If the counted number of steps does not match the reference value, the gas valve assembly may be placed in a lockout mode. 2. The method of claim 1 , wherein:when the control valve is at the first end stop, the control valve is in a fully closed position; andwhen the control valve is at the second end stop, the control valve is in a fully open position.3. The method of claim 1 , wherein when moving the control valve from the second end stop to the first end stop claim 1 , the controller is configured to initially operate the stepper motor in a higher current mode for a predetermined number of motor steps before operating the stepper motor in an end stop detect mode whereby the control valve reaching the first end stop is detected by a sensed a higher current draw from the stepper motor.4. The method of claim 1 , wherein moving the control valve from the second end stop to the first end stop comprises moving the control valve a full valve stroke of the control valve plus a predetermined clearance margin claim 1 , wherein the predetermined clearance margin accounts for particular tolerances associated with the gas valve assembly.5. The method of claim 4 , wherein the gas valve assembly further comprises a drive train from the stepper motor to the control valve claim 4 , and wherein the predetermined clearance margin accounts for particular tolerances associated with the drive train.6. The method of claim 1 , wherein the controller is configured to initiate ...

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Номер записи: 16
05-03-2020 дата публикации

Method for operating a gas burner appliance

Номер: US20200072463A1
Автор: Piet Blaauwwiekel
Принадлежит: Honeywell International Inc

Method for operating a gas burner appliance ( 10 ). During burner-on-phases a gas/air mixture having a defined mixing ratio of gas and air is provided to a burner chamber ( 11 ). Said gas/air mixture is provided by a mixing device ( 23 ) mixing an air flow with a gas flow. Said mixing device ( 23 ) has at least two Venturi nozzles being connected in parallel. Said air flow is provided by a fan ( 14 ) in such a way that the fan speed of the fan ( 14 ) depends on a desired burner load. The fan speed range of the fan ( 14 ) defines a modulation range of the gas burner appliance ( 10 ). Said defined mixing ratio of gas and air of the gas/air mixture is controlled over the modulation range of the gas burner appliance ( 10 ) by a gas regulating valve ( 18 ). Said gas regulating valve ( 18 ) has a pneumatic controller ( 24 ) controlling the mixing ratio of gas and air on basis of a pressure difference between the gas pressure of the gas flow in the gas pipe ( 16 ) and a reference pressure. During burner-on-phases the combustion quality is monitored on basis of a signal provided by a combustion quality sensor. The defined mixing ratio of gas and air of the gas/air mixture can be calibrated during on basis of the signal provided by the combustion quality sensor, namely by adjusting during calibration a position of a throttle ( 17 ). The calibration of the gas/air mixture is performed in such a way that for calibration at least one of the Venturi nozzles ( 28 ) of the mixing device ( 23 ) is closed while at least one of the Venturi nozzles ( 28 ) of the mixing device ( 23 ) is opened.

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Номер записи: 17
18-03-2021 дата публикации

Coaxial Gas Valve Assemblies Including Electronically Controlled Solenoids

Номер: US20210080122A1
Автор: FURMANEK Daniel L., STARK Mark
Принадлежит:

A coaxial gas valve assembly includes a gas inlet, a gas outlet, a valve tube, and a shaft member. A main valve is movable between a closed position and an open position (broadly, openable and closable). A main spring is positioned to resiliently bias the main valve in its closed position. A redundant valve is movable between a closed position and an open position (broadly, openable and closable). A redundant spring is positioned to resiliently bias the redundant valve in its closed position. A solenoid coil is positioned to electromagnetically move the shaft member within the valve tube. A balance diaphragm is connected to the valve tube. A gas path through at least the valve tube allows gas flow from a first side of the balance diaphragm to a second side of the balance diaphragm to reduce a pressure difference between the first and second sides of the balance diaphragm. 1. A coaxial gas valve assembly comprising:a gas inlet;a gas outlet;a valve tube;a shaft member positioned at least partially within the valve tube and movable relative to the valve tube; a closed position in which the main valve member abuts the main valve seat to inhibit gas flow through the main valve; and', 'an open position in which the main valve member is spaced apart from the main valve seat to permit gas flow through the main valve;, 'a main valve including a main valve seat and a main valve member positioned on the shaft member, the main valve member movable betweena main spring positioned to resiliently bias the main valve member in its closed position; a closed position in which the redundant valve member abuts the redundant valve seat to inhibit gas flow through the redundant valve; and', 'an open position in which the redundant valve member is spaced apart from the redundant valve seat to permit gas flow through the redundant valve;, 'a redundant valve including a redundant valve seat and a redundant valve member positioned on the valve tube, the redundant valve member movable ...

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Номер записи: 18
23-03-2017 дата публикации

DUAL SENSOR COMBUSTION SYSTEM

Номер: US20170082320A1
Автор: Bi Dayan, Wang Wei
Принадлежит:

The embodiments of the present application disclose a dual sensor combustion system. The dual sensor combustion system comprises: a combustor; a stepless speed regulating fan that supplies air for the combustor; a fuel gas conduit that is in communication with the combustor; a proportional valve provided on the fuel gas conduit; a control unit electrically connected to the stepless speed regulating fan and the proportional valve; a first pressure sensor assembly that detects a first pressure signal of the gas flow passage; a second pressure sensor assembly that detects a second pressure signal of the fuel gas conduit; a storage that stores a correspondence relationship between a first target pressure signal of the gas flow passage and a second target pressure signal of the fuel gas conduit; and the control unit controlling at least one of the stepless speed regulating fan and the proportional valve based on the first pressure signal, the second pressure signal and the correspondence relationship. 1. A dual sensor combustion system , wherein the dual sensor combustion system in its interior has a gas flow passage from an air inlet to a smoke exhaust port , the dual sensor combustion system comprising:a combustor;a stepless speed regulating fan that supplies air for the combustor;a fuel gas conduit that is in communication with the combustor;a proportional valve provided on the fuel gas conduit;a control unit electrically connected to the stepless speed regulating fan and the proportional valve;a first pressure sensor assembly that detects a first pressure signal of the gas flow passage, a signal output end of the first pressure sensor assembly being connected to the control unit;a second pressure sensor assembly that detects a second pressure signal of fuel gas conduit, a signal output end of the second pressure sensor assembly being connected to the control unit;a storage that stores a correspondence relationship between a first target pressure signal of the gas ...

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Номер записи: 19
19-03-2020 дата публикации

AUTOMATED TUNING OF MULTIPLE FUEL GAS TURBINE COMBUSTION SYSTEMS

Номер: US20200089171A1
Автор: Chandler Christopher
Принадлежит:

Provided herein is a method for automated control of the gas turbine fuel composition through automated modification of the ratio of fuel gas from multiple sources. The method includes providing first and second fuel sources. The method further includes sensing the operational parameters of a turbine and determining whether the operational parameters are within preset operational limits. The method also adjusting the ration of the first fuel source to the second fuel source, based on whether the operational parameters are within the preset operational limits. 1. A tuning system for tuning the operation of a gas turbine , the system comprising:operational turbine controls for controlling operational control elements of the turbine, receiving operational data about the turbine,', 'providing a hierarchy of tuning issues,', 'determining whether sensed operational data is within predetermined operational limits and producing one or more indicators if said operational data is not within predetermined operational limits,', 'ranking the one or more indicators to determine the dominant tuning concern, and', 'tuning the operation of the turbine based on the dominant tuning concern., 'a tuning controller communicating with the operational turbine controls, the turbine controller configured to tune the operation of the turbine in accordance with the following'}2. The tuning system according to claim 1 , wherein tuning the operation of the turbine comprises making incremental adjustments of at least one operational control element of the turbine.3. The tuning system according to claim 1 , further comprising at least one sensor for sensing at least one of combustor dynamics or turbine exhaust emissions.4. The tuning system according to claim 1 , wherein the one or more indicators are ranked based on the severity of each indicator.5. The tuning system according to claim 4 , wherein the one or more indicators are further ranked based on the tuning priorities claim 4 , such that ...

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Номер записи: 20
28-03-2019 дата публикации

SYSTEM AND METHOD FOR COOLING DISCHARGE FLOW

Номер: US20190093517A1
Автор: Pakkala Srinivas
Принадлежит:

A system includes a probe disposed through one or more walls of a turbomachine. The probe includes a sensing component configured to sense a parameter of the turbomachine. The probe also includes a body coupled to the sensing component, an inlet configured to receive a cooling inflow, a shell that defines a cooling passage, and an outlet. The sensing component is disposed on a warm side of the one or more walls. The inlet and the outlet are disposed on a cool side of the one or more walls. The cooling passage directs the cooling inflow toward the sensing component and toward the outlet. The outlet is configured to receive an outflow from the cooling passage, wherein the outflow includes at least a portion of the cooling inflow. 1. A system comprising: a sensing component configured to sense a parameter of a turbomachine, wherein the sensing component is disposed on a warm side of the one or more walls;', 'a first body coupled to the sensing component;', 'a first inlet configured to receive a first cooling inflow, wherein the first inlet is disposed on a cool side of the one or more walls;', 'a first shell coupled to the first inlet, wherein the first shell defines a first cooling passage that extends through the one or more walls of the turbomachine, wherein the first cooling passage is configured to direct the first cooling inflow from the first inlet toward the sensing component of the probe and toward a first outlet coupled to the first shell; and', 'the first outlet, wherein the first outlet is disposed on the cool side of the one or more walls, and the first outlet is configured to receive a first outflow from the first cooling passage, wherein the first outflow comprises at least a first portion of the first cooling inflow., 'a first probe disposed through one or more walls of a turbomachine, comprising2. The system of claim 1 , wherein the first probe comprises a lambda probe claim 1 , a temperature probe claim 1 , a flow-sensing probe claim 1 , or a ...

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Номер записи: 21
28-03-2019 дата публикации

SINGLE VALVE FOR GAS GRILL WITH MULTIPLE BURNERS

Номер: US20190093885A1
Автор: Kalisiak Anton
Принадлежит: Weber-Stephen Products LLC

A gas delivery system for gas grills is provided, the delivery system including one gas valve that controls the gas flow to a plurality of burner tubes. 1. A gas delivery system for a gas grill , the grill having a firebox with a front and a back portion , the system comprising:a plurality of burner tubes that extend into the firebox from the front portion to the back portion;a gas control valve, the control valve having a gas inlet and a plurality of gas outlets coinciding in number with the plurality of burner tubes;a gas line from each gas outlet of the control valve to a corresponding burner tube, whereby the amount of gas delivered to a particular burner tube is dependent upon the adjustment of the control valve.2. The gas delivery system of wherein the gas control valve includes a valve stem operably coupled to a control cone having a plurality of apertures claim 1 , such that the amount of gas delivered to a particular burner tube is adjusted by turning the valve stem and aligning the desired apertures of the control cone with the desired gas outlet of the valve.3. The gas delivery system of wherein adjustment of the gas control valve enables the plurality of burners to provide different gas flows.4. The gas delivery system of wherein adjustment of the gas control valve enables indirect cooking.5. The gas delivery system of wherein the plurality of burner tubes extend into the firebox from one side of the firebox to the other. The present inventions relate to gas grills. In particular, the present inventions relate to gas grills having a gas delivery system with one valve that controls multiple burners to easily enable a wide range of cooking conditions.Grilling is exceedingly popular. The use of gas grills is also extremely popular for a variety of reasons. For example, some grillers don't like the mess of charcoal and particularly, lighting or starting the charcoal. Some grillers also like the control and relative ease of use of gas grills.Typical gas ...

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Номер записи: 22
08-04-2021 дата публикации

TEMPERATURE SENSING AND SMART GAS COOKING

Номер: US20210100393A1
Автор: Bentley Garrett, Delgado Humberto, Silva Brian, Sumner David, White Tyson
Принадлежит:

A gas cooktop may include: a gas burner; a sensor configured to sense temperature of a cooking container heated by the gas burner; a valve configured to control flow rate of gas from a gas source to the gas burner; and a control system including circuitry. The control system may start operation of the gas burner; receive sensor signals from the sensor indicating the temperature of the cooking container; and based on received sensor signals representing the sensed temperature of the cooking container and a cooking profile indicating one or more durations and one or more temperatures, control the valve to change the gas flow rate to the gas burner. 1. A gas cooktop comprising:a gas burner;a sensor configured to sense temperature of a cooking container heated by the gas burner;a valve configured to control flow rate of gas from a gas source to the gas burner; and start operation of the gas burner;', 'receive sensor signals from the sensor indicating the temperature of the cooking container; and', 'based on received sensor signals representing the sensed temperature of the cooking container and a cooking profile indicating one or more durations and one or more temperatures, control the valve to change the gas flow rate to the gas burner., 'a control system including circuitry, the control system configured to2. The gas cooktop of claim 1 , wherein controlling the valve includes:controlling the valve to increase the flow rate of the gas to the burner when a temperature defined by the cooking profile is higher than the temperature of the cooking container represented by the received sensor signals, andcontrolling the valve to decrease the flow rate of the gas to the burner when the temperature defined by the cooking profile is lower than the temperature of the cooking container represented by the received sensor signals.3. The gas cooktop of claim 1 , wherein the valve is a proportional solenoid valve.4. The gas cooktop of claim 1 , wherein the control system is ...

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Номер записи: 23
26-03-2020 дата публикации

COMBUSTION APPARATUS AND HOT WATER APPARATUS

Номер: US20200096197A1
Автор: KARAKI Tatsuya
Принадлежит: NORITZ CORPORATION

A combustion apparatus includes a burner configured to produce flames, a first flame rod and a second flame rod, and a controller. The burner is configured to be controlled, by the controller, to be in a first output state, and a second output state in which output is smaller than in the first output state. The first flame rod makes contact with the flames produced at the burner in a normal combustion state. The second flame rod makes contact with the flames produced at the burner in the normal combustion state when the burner is being controlled to be in the first output state, and does not make contact with the flames produced at the burner in the normal combustion state when the burner is being controlled to be in the second output state. 1. A combustion apparatus comprising:a burner configured to produce flames;a first flame rod and a second flame rod; anda controller,the burner being configured to be controlled, by the controller, to be in a first output state, and a second output state in which output is smaller than in the first output state,the first flame rod being arranged at a position where it makes contact with the flames produced at the burner in a normal combustion state when the burner is being controlled to be in the first output state and the second output state,the second flame rod being arranged at a position where it makes contact with the flames produced at the burner in the normal combustion state when the burner is being controlled to be in the first output state, and does not make contact with the flames produced at the burner in the normal combustion state when the burner is being controlled to be in the second output state, andthe controller being configured to determine that the burner is in an abnormal combustion state when, with the burner being controlled to be in the second output state, it is detected that the second flame rod and the flames produced at the burner are in contact with each other.2. The combustion apparatus according ...

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Номер записи: 24
26-03-2020 дата публикации

STEPPER MOTOR DRIVEN MODULATING GAS VALVE AND SYSTEM

Номер: US20200096200A1
Автор: Leeseberg Tony, Pearson James E., Phillips Curtis
Принадлежит: ROBERTSHAW CONTROLS COMPANY

A stepper motor driven modulating gas valve and system are provided. Such a system includes an electronic controller, a touch user interface, and a stepper motor. The system also includes a variable flow gas valve having a rotatable valving member for controlling a variable flow of gas therethrough, the valving member having an input shaft, and a gear train operatively coupling the output shaft of the stepper motor to the input shaft of the valving member of the variable flow gas valve. A burner is coupled to the variable flow gas valve. The electronic controller receives a user input for flame selection via the touch user interface and energizes the stepper motor to position the variable flow gas valve valving member to a predetermined angular position through the gear train to provide a flow of gas to the burner that will provide the user's desire flame intensity. 1. A stepper-motor-driven modulating gas flow valve , comprising:a stepper motor having an output shaft that is controlled steps by an electronic controller;a valving member for controlling a flow of gas through the gas flow valve, the valving member coupled to an input shaft such that rotation of the input shaft operates the valving member to open or close the gas flow valve; anda gear train operatively coupling the output shaft of the stepper motor to the input shaft of the valving member.2. The modulating gas flow valve of claim 1 , wherein the electronic controller is configured to rotate the output shaft in discrete steps.3. The modulating gas flow valve of claim 1 , wherein the electronic controller is coupled to a user interface.4. The modulating gas flow valve of claim 1 , wherein the output shaft of the stepper motor claim 1 , the input shaft of the valving member claim 1 , and the gear train are integrated into a single housing.5. The modulating gas flow valve of claim 1 , wherein the valving member is a rotatable tapered plug disposed in a tapered housing.6. The modulating gas flow valve of ...

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Номер записи: 25
08-04-2021 дата публикации

DELAYED IGNITION PREVENTION IN A MULTI-RING GAS BURNER FOR A COOKTOP APPLIANCE

Номер: US20210102700A1
Автор: Billman David William, Lea Jennifer Nicole
Принадлежит:

A method of operating a multi-ring gas burner includes sending a spark to a first ring of the multi-ring burner. After sending the spark to the first ring, the method determines a flame status of the first ring and adjusts a position of an electronic gas valve connected to a second ring of the multi-ring gas burner based on the determined flame status of the first ring. 1. A method of operating a multi-ring gas burner , comprising:sending a spark to a first ring of the multi-ring burner;determining a flame status of the first ring; andadjusting a position of an electronic gas valve connected to a second ring of the multi-ring gas burner based on the determined flame status of the first ring.2. The method of claim 1 , wherein adjusting the position of the electronic gas valve connected to the second ring of the multi-ring gas burner comprises closing the electronic gas valve connected to the second ring of the multi-ring gas burner based on an absence of flame at the first ring.3. The method of claim 1 , wherein adjusting the position of the electronic gas valve connected to the second ring of the multi-ring gas burner comprises opening the electronic gas valve connected to the second ring of the multi-ring gas burner based on a presence of flame at the first ring.4. The method of claim 1 , wherein the step of adjusting the position of the electronic gas valve connected to the second ring based on the determined flame status of the first ring is only performed when the determined flame status of the first ring is an absence of flame at the first ring and the step of adjusting the position of the electronic gas valve connected to the second ring comprises closing the electronic gas valve.5. The method of claim 1 , wherein the determined flame status is an absence of flame at the first ring claim 1 , further comprising allowing a period of time to elapse claim 1 , determining a second flame status of the first ring after the period of time claim 1 , and adjusting the ...

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Номер записи: 26
19-04-2018 дата публикации

HUMAN-MACHINE INTERFACE FOR GAS VALVE

Номер: US20180106698A1
Автор: Dharwada Pallavi, Karg Karen, Kasprzyk Donald J.
Принадлежит:

This disclosure relates generally to valves, and more particularly, to gas valve assemblies. In one example, a valve leakage test and/or other tests may be performed on a valve assembly including a valve body with a first valve and a second valve, where the valves may be positioned across a fluid path in the valve body with an intermediate volume between the valves. A human machine interface (HMI) may be in communication with the valve assembly to initiate and/or monitor tests on the valve assembly. The HMI may include a start button on a user interface for initiating the tests on valve assembly. The HMI may receive results of the tests (e.g., valve leakage tests) in real time during the test and display the results of the tests on a display of the HMI in real time. 1. A valve assembly having a gas inlet and a gas outlet , the valve assembly comprising:a first valve fluidly coupled to the gas inlet;a second valve downstream of the first valve, operatively coupled to the gas outlet;a pressure sensor positioned to sense a pressure in an intermediate volume between the first valve and the second valve,a controller operatively coupled to the first valve, the second valve and the pressure sensor;the controller is configured to open the first valve and the second valve to allow gas to flow from the gas inlet to the gas outlet, and close one or more of the first valve and the second valve to prevent gas from flowing from the gas inlet to the gas outlet; closing the first valve and opening the second valve;', 'with the first valve still closed, closing the second valve for a first predetermined amount of time;', 'monitoring for a first valve leak rate during the first predetermined amount of time; and, 'the controller is further configured to execute a valve leak test, which comprisesa human machine interface (HMI) operatively coupled to the controller, the human machine interface including a user interface with a display, the user interface including a start selection that ...

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Номер записи: 27
30-04-2015 дата публикации

Gas Turbine Combustor and Gas Turbine Combustor Control Method

Номер: US20150113998A1
Автор: NUMATA Shohei, TATSUMI Tetsuma, YOKOTA Osami
Принадлежит:

The burners include a central burner and a plurality of outer burners disposed around the central burner. Each of the outer burners is equipped with a fuel supply system that includes a fuel flow regulating valve. The outer circumference of the combustor liner is provided with a cylindrical flow sleeve. At least one flow velocity measurement unit is disposed in a circular flow path formed between the combustor liner and the flow sleeve to measure the flow velocity of air flowing downward. The gas turbine combustor also includes a control device that adjusts the fuel flow rate of the fuel, which is to be supplied to the outer burners, in accordance with the flow velocity of the air in the circular flow path, which is measured by the flow velocity measurement units. 1. A gas turbine combustor comprising:a combustor liner that forms a combustion chamber that mixes and burns fuel and air; anda plurality of burners that are positioned upstream of the combustion chamber to supply the fuel to the combustion chamber;wherein the burners include a central burner and a plurality of outer burners disposed around the central burner;wherein each of the outer burners is equipped with a fuel supply system that includes a fuel flow regulating valve;wherein the outer circumference of the combustor liner is provided with a cylindrical flow sleeve;wherein at least one flow velocity measurement unit is disposed in a circular flow path formed between the combustor liner and the flow sleeve to measure the flow velocity of air flowing downward; andwherein the gas turbine combustor includes a control device that adjusts the fuel flow rate of the fuel, which is to be supplied to the outer burners, in accordance with the flow velocity of the air in the circular flow path, which is measured by the flow velocity measurement units.2. The gas turbine combustor according to claim 1 , wherein the control device calculates the fuel-air ratio of the outer burners in accordance with flow velocity ...

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Номер записи: 28
11-04-2019 дата публикации

FUEL CONNECTION UNIT

Номер: US20190105965A1
Автор: HAEFNER Michael, Jensen Hans
Принадлежит:

A fuel connection unit for a fuel-operated vehicle heater includes a connection unit body () to be mounted on a heater body (). A fuel release line connection area () is positioned such that it meshes with or faces an interior () of the heater body (). The fuel release line connection area () connects a fuel release line (), extending in the interior (), with a fuel feed line connection area () to be positioned exposed on an outer side of the heater body (), for connecting a fuel feed line. 1. A fuel connection unit for a fuel-operated vehicle heater , the fuel connection unit comprising:a connection unit body to be mounted on a heater body;a fuel release line connection area, which is configured to be positioned to mesh with or face an interior of the heater body, for connecting a fuel release line extending in the interior of the heater body; anda fuel feed line connection area to be positioned exposed on an outer side of the heater body for connecting a fuel feed line.2. A fuel connection unit in accordance with claim 1 , wherein the fuel release line connection area comprises a release pipe projecting from the connection unit body.3. A fuel connection unit in accordance with claim 2 , wherein:a connection formation is provided on an end area of the release pipe for a fluid-tight connection of a fuel release line to the release pipe; andthe end area is located at a distance from the connection unit body.4. A fuel connection unit in accordance with claim 3 , wherein:the connection formation comprises at least one sealing element with a sealing element insertion opening; andthe at least one sealing element is received in a release opening area of the release pipe and is connected in a fluid-tight connection to an inner circumferential surface of the release opening area and/or the connection formation provides a funnel-shaped fuel release line opening.5. A fuel connection unit in accordance with claim 4 , wherein:the connection formation comprises an insertion ...

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Номер записи: 29
11-04-2019 дата публикации

VEHICLE HEATER AND CONTROLS THEREFOR

Номер: US20190107099A1
Автор: Strang Kenneth, Thomas Korbin, Wilnechenko Bruce
Принадлежит:

A heater comprises a combustion chamber and a jacket extending about the combustion chamber. There is a fan having an output which communicates with the combustion chamber to provide combustion air. There is also a fuel delivery system having a variable delivery rate. A burner assembly is connected to the combustion chamber. The burner assembly has a burner mounted thereon adjacent the combustion chamber. The burner receives fuel from the fuel delivery system. There is an exhaust system extending from the combustion chamber. An oxygen sensor is positioned in the exhaust system to detect oxygen content of exhaust gases. There is a control system operatively coupled to the oxygen sensor and the fuel delivery system. The control system controls the delivery rate of the fuel delivery system according to the oxygen content of the exhaust gases 1. A heater for a liquid , the heater comprising:a combustion chamber;a jacket for the liquid, the jacket extending about the combustion chamber;a fan having an output communicating with the combustion chamber to provide combustion air;a fuel delivery system having a variable delivery rate;a burner assembly connected to the combustion chamber, the burner assembly having a burner mounted thereon adjacent the combustion chamber, the burner receiving fuel from the fuel delivery system;an exhaust system extending from the combustion chamber;an oxygen sensor positioned in the exhaust system to detect oxygen content of exhaust gases; anda control system operatively coupled to the oxygen sensor and the fuel delivery system, the control system controlling the delivery rate of the fuel delivery system according to the oxygen content of the exhaust gases.2. The heater as claimed in claim 1 , wherein the control system provides a closed loop feedback control.3. The heater as claimed in claim 1 , wherein the fuel delivery system includes a proportional control valve claim 1 , the control system controlling the delivery rate of the fuel ...

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Номер записи: 30
28-04-2016 дата публикации

MONITORING EFFICIENCY AND OPERATIONAL MODE CHANGES OF COMBUSTION EQUIPMENT

Номер: US20160116374A1
Автор: Kucera David, STRELEC Martin, Vass Jiri
Принадлежит:

Methods, systems, and computer-readable media are described herein. One method embodiment includes determining an unscaled efficiency signal of combustion equipment using data measured from the combustion equipment, determining a theoretical efficiency signal of the combustion equipment using a theoretical efficiency surface of the combustion equipment and a subset of the measured data, and normalizing the unscaled efficiency signal using values from a correlated portion of the theoretical efficiency signal to monitor efficiency of the combustion equipment. Other embodiments can include providing a performance indicator of the combustion equipment in response to an operational mode change. 1. A method for monitoring efficiency of combustion equipment including:determining an unscaled efficiency signal of combustion equipment using data measured from the combustion equipment;determining a theoretical efficiency signal of the combustion equipment using a theoretical efficiency surface of the combustion equipment and a subset of the measured data; andnormalizing the unscaled efficiency signal using values from a correlated portion of the theoretical efficiency signal to monitor efficiency of the combustion equipment.2. The method of claim 1 , including receiving the measured data from a number of sensors connected to the combustion equipment claim 1 , wherein the measured data includes a temperature of supply liquid and a temperature of return liquid.3. The method of claim 1 , wherein the subset of the measured data includes a temperature of return liquid and a firing rate of the combustion equipment.4. The method of claim 1 , including determining a fuel consumption of the combustion equipment using the measured data and wherein the determined fuel consumption is used to determine the unscaled efficiency signal.5. The method of claim 1 , including determining the theoretical efficiency surface using offline data claim 1 , wherein the offline data includes at least one ...

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Номер записи: 31
13-05-2021 дата публикации

Apparatus for Oil Flow Control

Номер: US20210140635A1
Автор: Wallace Daniel P.
Принадлежит: Preferred Utilities Manufacturing Corporation

The current invention discloses a method of controlling the flow rate of a heavy fuel oil in a fluid transfer apparatus having a point of use outlet to a boiler. It not only controls the flow rate of the fuel oil directly, but also indirectly control the viscosity of the fuel oil without measuring its viscosity. It relies on combustion curves established during the commissioning period using a typical fuel oil at a predetermined trim heater temperature. During normal operation, it sets the flow control valve according to the combustion curves, measures the flow rate and compares to the flow rate target. Instead of using the flow rate measurement feedback to control the flow control vale, it modulates the trim heater to vary the viscosity to arrive at the desired flow rate. 1. An apparatus for controlling a fuel oil , comprising{'b': '10', 'An oil pump for drawing the fuel oil from a source and raising a pressure of the fuel oil;'}{'b': '15', 'A pressure regulator for regulating the pressure of the fuel oil downstream of the pressure regulator to a desired value;'}{'b': '20', 'A trim heater for controlling a temperature of the fuel oil;'}{'b': '30', 'A temperature sensor for measuring the temperature the fuel oil;'}{'b': '40', 'A flow control valve (FCV) for controlling a flow rate of fuel oil;'}{'b': '50', 'A flow meter for measuring the flow rate of the fuel oil;'}{'b': '70', 'A combustion controller ;'}{'b': '90', 'A heater controller ; and'}{'b': 70', '90', '40', '90', '30', '50', '20, 'A burner capable of burning said fuel oil in a boiler, wherein the combustion controller receives a call for heat signal from the boiler, and determines a target flow rate of the fuel oil for the heater controller and a target setting for the FCV ; the heater controller receives feedback signals from the temperature sensor and the flow meter , and controls the trim heater to drive the flow rate of the fuel oil toward the target flow rate of the fuel oil.'}2709040. The apparatus in ...

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Номер записи: 32
03-05-2018 дата публикации

MULTI-FUEL-CANISTER INSECT REPELLENT SYSTEM

Номер: US20180117610A1
Автор: Crawford Brendan, Hines Benjamin, Koury Steffen, Paganetti Tom, Wang Wender
Принадлежит:

The invention provides a hydrocarbon-fueled device for heating and dispensing a volatile substance, such as an insect repellent. The device provides a long-lasting 48-hour fuel system, multiple fuel canisters that can be exchanged without interrupting the operation of the device, an illuminated indicator that provides a visible indication of the operating state of the device from any viewing angle, and a flame-extinguishing safety lid. During the warm-up phase, the indicator indicates this state by pulsing. Once the device reaches operating temperature, the indicator emits a steady light, indicating proper operation. In the event that the device cools below the operating temperature, the light will pulse, alerting the user to check the flame and/or fuel supply. The user can initiate complete, properly-controlled operation of all functions of the device via the operation of a single on-off switch. 2. The device according to claim 1 , further comprising:(f) an electrical switch activated by the valve switch and operably connected to a battery and a controller, wherein movement of the valve switch by the user from the off position to the on position closes the switch and energizes the controller;(g) a temperature sensor in thermal contact with either the combustion chamber or the sole plate, and operably connected to the controller; and (i) a first indicator state that is visually detectable by the user if the temperature sensor detects that the combustion chamber is below a predetermined operating temperature, or', '(ii) a second indicator state that is visually detectable by the user if the temperature sensor detects that the combustion chamber is at or above a predetermined operating temperature., '(h) a light source operably connected to the controller, the controller energizing the light source and causing the light source to enter into either'}3. The device according to claim 2 , wherein the first indicator state is a flashing of the light source claim 2 , and ...

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Номер записи: 33
25-04-2019 дата публикации

GAS TURBINE HAVING FUEL GAS MONITORING SYSTEM

Номер: US20190120145A1
Автор: Bunce Richard H., Teehan Damien G.
Принадлежит:

A gas turbine and a method for operating a gas turbine having a fuel gas monitoring system are presented. The fuel gas monitoring system may provide a measurement of a parameter of a fuel gas in real time. An operation of a gas turbine may be optimized to adapt variation in hydrocarbon content of a fuel gas from the measurement. The fuel gas monitoring system may provide an optical, flow through, online monitoring of fuel gas composition. 1. A gas turbine comprising:a compressor that is configured to compress air;a combustor located downstream of the compressor that is configured to receive the compressed air;a fuel gas supply line connected to the combustor that is configured to supply fuel gas to the combustor, wherein the fuel gas and the compressed air are mixed and combusted in the combustor to generate working gas;a turbine located downstream of the combustor that is configured to expend the working gas to generate power output;a fuel gas monitoring system that is configured to provide a measurement of a parameter of the fuel gas in real time, wherein the fuel gas monitoring system comprises an inlet and an outlet, wherein a fuel gas sample flows into the fuel gas monitoring system through the inlet, wherein the fuel gas sample is discharged from the fuel gas monitoring system through the outlet; anda control system that is configured to adjust an operating parameter of the gas turbine based on the measurement of the parameter of the fuel gas.2. The gas turbine as claimed in claim 1 , wherein the fuel gas monitoring system comprises an optical system.3. The gas turbine as claimed in claim 1 , wherein the fuel gas monitoring system is configured to provide an online measurement of the parameter of the fuel gas.4. The gas turbine as claimed in claim 1 , wherein the fuel gas sample is discharged from the fuel gas monitoring system into the fuel gas supply line.5. The gas turbine as claimed in claim 1 , further comprising an upstream pressure regulating device ...

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Номер записи: 34
09-05-2019 дата публикации

GAS COOKING APPLIANCE

Номер: US20190137108A1
Автор: ALBIZURI LANDAZABAL Iñigo, Múgica Odriozola José Ignacio, Querejeta Andueza Félix
Принадлежит:

According to some embodiments gas cooking appliances are provided that include at least one burner, an electrode, and a push button unit with a push button for activating the electrode. A gas valve is provided for each burner for regulating gas flow arriving from a gas conduit. An electromagnetic shut-off valve is arranged in the gas conduit and includes a closure member for closing the passage of gas. A control unit controls the shut-off valve. The closure member includes a stable closed position and a stable open position, the closure member changing position upon receiving electric current pulses. The push button unit is configured for pushing the closure member of the shut-off valve to the open position while at the same time activating the control unit and the electrode when the push button is pressed when the gas cooking appliance off. The control unit controls the shut-off valve by means of electric current pulses once the push button has been pressed. 1. A gas cooking appliance comprising:a burner:an ignition electrode for igniting the burner;a gas valve for regulating gas flow to the burner from a gas conduit;an electromagnetic shut-off valve arranged in the gas conduit, the electromagnetic shut-off valve including a closure member that is movable between a stable closed position and a stable open position, when the closure member is in the stable open position gas is permitted to flow through electromagnetic shut-off valve toward the burner, when the closure member is in the stable closed position gas is not permitted to flow through electromagnetic shut-off valve;a control unit configured to deliver electric current pulses to the electromagnetic shut-off valve to cause the closure member to move between the stable open and closed positions; anda push button unit with a push button configured such that when the push button is moved from a non-depressed position to a depressed position the closure member is caused to move from the closed stable position to ...

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Номер записи: 35
24-05-2018 дата публикации

THERMOACOUSTIC PRECURSOR METHOD AND APPARATUS

Номер: US20180142891A1
Автор: Hermann Jakob, ROUWENHORST Driek
Принадлежит:

Method of determining at least one stability margin for a combustor (), by obtaining modal characteristics of at least one spectral peak in the thermoacoustic dynamics, as well as deter mining the stability margin for the combustor () on the basis of the obtained modal characteristics, and an apparatus being adapted to carry, out said method. 1. Method of determining a stability margin for a combustor by assessing modal dynamics of a thermoacoustic system , comprising:obtaining modal characteristics of at least one spectral peak in an acoustic field of the combustor,determining at least one stability margin for the combustor based on the obtained modal characteristics of the at least one spectral peak in the acoustic field of the combustor,2. Method according to claim 1 , wherein obtaining the modal characteristics comprises: eigenvectors and/or', 'decay rates of eigenmodes and/or', 'eigenfrequencies and/or', 'stochastic forcing amplitude., 'identifying the thermoacoustic system, based on a state space model structure with stochastic input, to estimate'}3. Method according to claim 1 , wherein obtaining the modal characteristics comprises:assuming at least one pre-defined modal vector, in particular at least one pre-defined modal vector corresponding to a standing acoustic wave or a traveling acoustic wave,mode decomposition based on the at least one pre-defined modal vector to obtain modal amplitudes, andestimating a decay rate and/or frequency of at least one of the modal amplitudes.4. Method according to claim 2 , wherein the at least one stability margin for the combustor is determined as the estimated decay rate.5. Method according to claim 2 , wherein:the thermodynamic system is decomposed onto at least one estimated eigenvector, andthe at least one stability margin for the combustor is determined based on the modal amplitude on basis of an estimated eigenvector.6. Method according to claim 3 , wherein:the thermodynamic system is decomposed onto at least one ...

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Номер записи: 36
31-05-2018 дата публикации

METHOD AND APPARATUS FOR WASTE COMBUSTION

Номер: US20180149356A1
Автор: Arava Shivaprasad, Arsava Kemal S., Raghavan Vasudevan, Rangwala Ali S., Sezer Hayri, Walawalkar Apoorv
Принадлежит:

A toxic waste incinerator is capable of enhanced combustion of hazardous waste (oil contaminated sand, human waste, garbage, etc.) utilizing immersed non-combustible and thermally conductive objects for increasing heat feedback from the flames to the unburned fuel, while air inlets are used to optimize the air entrainment rate to enhance the burning efficiency. The burning rate of a fluidic mass such as a sand-oil mixture is enhanced using immersed conductive objects (copper rods) which enable rapid heat-up of the flame exposed to the upper surface of the rod and transmits heat back into the sand. Consequent conduction of heat to the porous media through the lower portion of the immersed rod significantly increases vaporization and therefore the burning rate. Incineration may be performed on a transient, exigent basis as with hazardous waste and oil spills, or as part of a permanent fixture for receiving an ongoing waste stream. 1. A method for expediting combustion , comprising:aggregating a fluidic mass of at least partially combustible materials;inserting a thermally conductive media into the fluidic mass; andapplying an ignition source to the fluidic mass such that the thermally conductive media absorbs heat from the combustion for transferring thermal energy through the thermally conductive media to unignited portions of the fluidic mass.2. The method of wherein the thermally conductive media is an elongated rod adapted for insertion into a mixture of liquid waste and solids.3. The method of wherein the thermally conductive media is an elongated tube adapted for redirecting and conducting heat into the fluidic mass into which it is inserted.4. The method of wherein the fluidic mass is a contaminated porous media including flammable toxic waste.5. The method of wherein the fluidic mass is petroleum entrenched sand.6. The method of wherein the fluidic mass includes an emulsion of flammable and non-flammable liquids.7. The method of wherein the thermal conductive ...

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Номер записи: 37
31-05-2018 дата публикации

Dynamic Multi-Legs Ejector For Use In Emergency Flare Gas Recovery System

Номер: US20180149357A1
Автор: Ansari Nisar Ahmad K., Salu Samusideen Adewale, Soliman Mohamed A.
Принадлежит: Saudi Arabian Oil Company

A system and method for recycling flare gas back to a processing facility that selectively employs different numbers of ejector legs depending on the flare gas flowrate. The ejector legs include ejectors piped in parallel, each ejector has a flare gas inlet and a motive fluid inlet. Valves are disposed in piping upstream of the flare gas and motive fluid inlets on the ejectors, and that are selectively opened or closed to allow flow through the ejectors. The flowrate of the flare gas is monitored and distributed to a controller, which is programmed to calculate the required number of ejector legs to accommodate the amount of flare gas. The controller is also programmed to direct signals to actuators attached to the valves, that open or close the valves, to change the capacity of the ejector legs so they can handle changing flowrates of the flare gas. 1. A method of handling a flow of flare gas comprising:a. obtaining a flowrate of the flow of flare gas;b. directing the flow of the flare gas to a piping circuit comprising a plurality of ejector legs piped in parallel;c. comparing the flowrate of the flow of flare gas with flow capacities of the ejector legs;d. identifying a particular one or ones of the ejector legs having a cumulative capacity to adequately handle the flow of the flare gas;e. directing a flow of a motive gas to the piping circuit to motive gas inlets of ejectors in the particular one or ones of the ejector legs; andf. directing the flow of flare gas to suction inlets of the ejectors in the particular one or ones of the ejector legs.2. The method of claim 1 , wherein the flare gas and the motive gas combine in the ejectors to form a combination claim 1 , the method further comprising directing the combination to a location in a processing facility.3. The method of claim 1 , further comprising maintaining a pressure of the flare gas at the suction inlet at a substantially constant value and maintaining a pressure of the motive gas at the motive gas ...

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Номер записи: 38
11-06-2015 дата публикации

System and Method for Assessing Combustor Health During Operation

Номер: US20150159867A1
Автор: Lemmon Matthew Francis, Nanda Subrat, Patrick Romano, White Jonathan David
Принадлежит: GENERAL ELECTRIC COMPANY

A system for assessing combustor health during operation of the combustor includes a combustor, a sensor configured to sense combustion dynamics pressure data from the combustor, and a computing device that is in communication with the sensor and configured to receive the combustion dynamics pressure data from the sensor. The computing device is programed to extract a feature from the combustion dynamics pressure data and generate feature values for the feature over a period of time. The computing device is also programmed to generate a cumulative form of the feature that is based on the feature values over a time series and to compare the cumulative form to a historical cumulative form. 1. A system for assessing combustor health during operation of the combustor , comprising:a combustor;a sensor configured to sense combustion dynamics pressure data from the combustor; and extract a feature from the combustion dynamics pressure data and generate feature values for the feature over a period of time;', 'generate a cumulative form of the feature that is based on the feature values over a time series; and', 'compare the cumulative form to a historical cumulative form., 'a computing device in communication with the sensor and configured to receive the combustion dynamics pressure data from the sensor, the computing device programed to2. The system as in claim 1 , wherein the cumulative form is monotonically increasing.3. The system as in claim 1 , wherein the historical cumulative form is generated from historical feature values that correspond to an at-fault combustor.4. The system as in claim 1 , wherein the computing device is programmed to generate an cumulative form ending value.5. The system as in claim 4 , wherein the computing device is programed to compare the cumulative form ending value to a historical cumulative form ending value.6. The system as in claim 5 , wherein the computing device is programmed to calculate a risk value based on the comparison between ...

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Номер записи: 39
07-06-2018 дата публикации

OPERATION OF A GAS TURBINE COMPRISING AN INTERPOLATED OPERATING CURVE DEVIATION

Номер: US20180156127A1
Автор: Hausmann Kai, Seiler Carsten, Wall Dirk
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

An operating method for a gas turbine by partial-load operation, includes setting of a power setpoint value for a predefined temperature value; determining the two operating curves as a function of temperature according to the power of the gas turbine, wherein the power setpoint value is located between said operating curves; determining the difference in power of said two operating curves at the substantially constant predetermined temperature value; determining a power deviation from the predetermined power setpoint value of one of the two operating curves at the substantially constant predetermined temperature value; calculating an interpolated operating curve deviation on the basis of the difference in power and the power deviation, wherein the temperature is a turbine outlet temperature or a computationally determined turbine inlet temperature. 2. An operating method for a gas turbine during partial load operation , comprising the following steps:specifying a setpoint value of a temperature at a predetermined power output;determining two operating curves of the temperature as a function of the power output of the gas turbine, wherein the setpoint value of the temperature is arranged between these operating curves;determining the difference of the temperatures of these two operating curves at the essentially constant, predetermined power output;determining a deviation of the predetermined setpoint value of the temperature from the temperature of one of the two operating curves at the essentially constant, predetermined power output;calculating an interpolated operating curve deviation on the basis of the difference of the temperatures and the deviation of the setpoint value of the temperature,wherein the temperature is a turbine exit temperature of a computationally determined turbine inlet temperature.3. The operating method as claimed in claim 1 ,wherein one of the two operating curves is the operating curve currently in use in the control system of the gas ...

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Номер записи: 40
07-06-2018 дата публикации

GAS TURBINE FUEL NOZZLE WITH INTEGRATED FLAME IONIZATION SENSOR AND GAS TURBINE ENGINE

Номер: US20180156457A1
Автор: "DErcole Michele", ASTI Antonio, CIONCOLINI Stefano
Принадлежит:

A gas turbine fuel nozzle for a combustor of a gas turbine engine comprises a sleeve with an internal duct for premixed fuel gas flow; it further comprises a flame ionization sensor located on the sleeve externally to the duct; typically, the combustor has a single annular-shaped chamber. 1. A gas turbine fuel nozzle , the gas turbine fuel nozzle comprising a sleeve with an internal duct for premixed fuel gas flow , and a flame ionization sensor located on said sleeve externally to the duct.2. The gas turbine fuel nozzle of claim 1 , wherein said flame ionization sensor is located at an end zone of the said sleeve where premixed fuel gas flow is ejected.3. The gas turbine fuel nozzle of claim 1 , wherein said flame ionization sensor is located on an external lateral side or on a front side of said sleeve.4. The gas turbine fuel nozzle of claim 1 , wherein said flame ionization sensor comprises an annulus being an electrode of the sensor.5. The gas turbine fuel nozzle of claim 4 , wherein said metallic annulus is electrical isolated from said sleeve by an underlying isolating annulus.6. The gas turbine fuel nozzle of claim 1 , wherein said flame ionization sensor is electrically connected to a shielded mineral-insulated cable.7. The gas turbine fuel nozzle of claim 1 , wherein said sleeve comprises a plurality of ducts for fuel gas flow arranged as a crown inside the wall of said sleeve and ending on a front side of said sleeve.8. The gas turbine fuel nozzle of claim 1 , further comprising another flame ionization sensor located on a front side of said sleeve and externally to the duct.9. The gas turbine fuel nozzle of claim 1 , further comprising a support fixed to or integrated with said sleeve claim 1 , wherein said support houses at least one electric cable for the sensor.10. A gas turbine engine claim 1 , the gas turbine engine comprising a combustor with a single annular-shaped chamber claim 1 , and a plurality of fuel nozzles with one or more integrated flame ...

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Номер записи: 41
18-06-2015 дата публикации

REAL-TIME BURNER EFFICIENCY CONTROL AND MONITORING

Номер: US20150167972A1
Автор: Zhdaneev Oleg
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION

A method for real-time burner monitoring and control of a flare system, including analyzing a flare gas and/or flare exhaust gas by one or more analytical techniques and determining the flare gas and/or flare exhaust gas composition. The method may also include an ash particle monitoring system. The method further includes an analytical control unit for real-time adjustment of process conditions. 1. A real-time burner efficiency control and monitoring system , the system including:a flow header configured to feed a flare gas to the system;a separator that receives the flare gas from the flow header, and separates the flare gas into two or more fractions;a choke valve configured to control the flowrate of the flare gas exiting the separator;a flare system, located downstream from the choke valve, for the handling and burning of the flare gas;an air supply unit for supplying oxidant gas, at a variable flowrate, to the flare system for flare gas combustion;a flare gas sampling point downstream of the separator and upstream of the flare system for sampling the flare gas prior to admixture with the oxidant gas;a exhaust gas sampling point downstream of the flare system for sampling flared exhaust gas from the flare system; andan analytical control unit configured to compare the results obtained at each sampling point.2. The system of claim 1 , wherein the analytical control unit provides feedback for adjustment of at least one of the air supply flowrate claim 1 , separator pressure claim 1 , separator temperature claim 1 , or choke valve position.3. The system of claim 1 , further comprising one or more of ion mobility spectrometry claim 1 , differential mobility spectrometry claim 1 , isobaric sampling system claim 1 , isothermal sampling system claim 1 , gas chromatograph claim 1 , or mass-spectroscopy for flare gas stream profiling at the flare gas sampling point.4. The system of claim 1 , further comprising one or more of ion mobility spectrometry claim 1 , ...

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Номер записи: 42
15-06-2017 дата публикации

DEVICE FOR CONTROLLING THE COMBUSTION OF A BURNER

Номер: US20170167726A1
Автор: PANCOLINI Riccardo
Принадлежит:

Described is a device () for controlling the combustion of a burner (), comprising: •first means () for measuring the fuel flow rate (Vg); •second means for measuring the flow rate of the comburent (Va) •first operator means () for controlling the opening of an inlet valve () as a function of the quantity of fuel to be supplied to the burner (); •second operator means () for controlling the comburent flow regulator means () as a function of the quantity of comburent to be supplied to the burner (); According to this invention, the device () comprises a unit () for controlling the first operator means () and the second operator means () as a function of the values measured by the first measuring means () and by the second measuring means (). 132.-. (canceled)33. A combustion control device for a burner comprising a first inlet for the fuel , having an inlet valve for adjusting the quantity of fuel supplied , and a second inlet for the comburent , comprising comburent flow regulator means for adjusting the quantity of comburent supplied , the device comprising:first measuring means for measuring the flow rate (Vg) of the fuel which, in use, is supplied to the burner;second measuring means for measuring the flow rate (Va) of the comburent which, in use, is supplied to the burner;first operator means for controlling the opening of the inlet valve as a function of the quantity of fuel to be supplied to the burner;second operator means for controlling the comburent flow regulator means as a function of the quantity of comburent to be supplied to the burner;a unit for controlling the first operator means and the second operator means as a function of the values measured by the first measuring means and by the second measuring means;wherein the control unit performs a second feedback check on the second operator means by performing the following operations:generating an ideal flow rate value (Var) for the comburent as a function of the measured fuel flow rate (Vg) according ...

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Номер записи: 43
30-06-2016 дата публикации

CONNECTED HOT-WATER SUPPLY SYSTEM

Номер: US20160187029A1
Автор: Kitagawa Hideki, Sato Eri
Принадлежит:

To provide a connected hot-water supply system capable of preventing combustion failure of the burner of each hot-water supplier during hot-water supply operation to achieve stable hot-water supply operation. When dispersion in the rotation speed of a fan among respective hot-water suppliers is detected, a connection control unit regulates the combustion amount of each of the hot-water suppliers so as to reduce a difference in the rotation speed of the fan among the respective hot-water suppliers 1. A connected hot-water supply system , comprising a water flow passage,', 'a heat exchanger provided in the water flow passage,', 'a burner configured to heat the heat exchanger,', 'a fan configured to make combustion air and combustion exhaust of the burner forcibly flow,', 'an exhaust passage configured to discharge combustion exhaust of the burner that passed the heat exchanger by airstream by the fan, and', 'a hot-water supply controller configured to control hot-water supply operation, wherein, 'a plurality of hot-water suppliers connected to each other, the hot-water suppliers each comprising'}the hot-water supply controller in each of the hot-water suppliers is connected to a connection control unit configured to control linked operation of the respective hot-water suppliers,the exhaust passage of each of the hot-water suppliers is connected to a common exhaust passage configured to collectively discharge combustion exhaust from each of the hot-water suppliers,the fan of each of the hot-water suppliers is controlled to have a rotation speed corresponding to a combustion amount of the burner by the hot-water supply controller to deliver the combustion exhaust in the exhaust passage to the common exhaust passage,the connection control unit comprises a combustion regulator configured to regulate the combustion amount in each of the hot-water suppliers through the hot-water supply controller in each of the hot-water suppliers and to thereby regulate the rotation speed ...

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Номер записи: 44
28-06-2018 дата публикации

REDUCING OXYGEN IN A GAS TURBINE EXHAUST

Номер: US20180179939A1
Автор: BEUTEL TILMAN W., Dhanuka Sulabh K.
Принадлежит:

The present techniques are directed to a system and methods for operating a gas turbine system. An exemplary gas turbine system includes an oxidant system, a fuel system, and a control system. A combustor is adapted to receive and combust an oxidant from the oxidant system and a fuel from the fuel system to produce an exhaust gas. A catalyst unit including an oxidation catalyst that includes an oxygen storage component is configured to reduce the concentration of oxygen in the exhaust gas to form a low oxygen content product gas. 1. A method for combusting a fuel in a gas turbine , comprising:providing a fuel to a combustor of the gas turbine;providing an oxidant to the combustor;combusting the fuel and the oxidant in the combustor to produce an exhaust gas; andpassing at least a portion of the exhaust gas through a catalyst bed comprising a catalyst having an oxygen storage component (OSC) catalyst to form a low oxygen content product gas; a mixture of platinum and palladium in a ratio between about 0.1 and about 100,000;', 'zirconia;', 'ceria, wherein the ceria is in a ratio of between about 0.1 to about 5.0 to the zirconia; and', 'rhodium., 'wherein the catalyst comprises2. The method of claim 1 , wherein the catalyst further comprises:an element from groups 8-10 other than platinum or palladium; anda refractory oxide other than zirconia.3. The method of claim 2 , wherein the element from groups 8-10 comprises iron claim 2 , cobalt claim 2 , or nickel claim 2 , or any combinations thereof.4. The method of claim 2 , wherein the refractory oxide comprises alumina claim 2 , silica claim 2 , or titania claim 2 , or any combinations thereof.5. The method of claim 1 , wherein the alkaline earth metal oxide comprises magnesium oxide claim 1 , calcium oxide claim 1 , strontium oxide claim 1 , or barium oxide claim 1 , or any combinations thereof.6. The method of claim 1 , comprising operating the gas turbine in a fuel rich condition to decrease an amount of oxygen in the ...

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Номер записи: 45
05-07-2018 дата публикации

COMBUSTOR NOZZLE, GAS TURBINE COMBUSTOR, GAS TURBINE, COVER RING, AND COMBUSTOR NOZZLE MANUFACTURING METHOD

Номер: US20180187891A1
Автор: FUKUMOTO Koshiro, Isono Mitsunori, IZUTSU Nobuyuki, Mitani Masaki, MORISHIGE Dai, Saito Toshihiko, Wada Yoshiyuki, Yamasaki Hiroyuki
Принадлежит:

Provided are a combustor nozzle, a gas turbine combustor, a gas turbine, a cover ring, and a combustor nozzle manufacturing method. The combustor nozzle includes: a nozzle body provided with a fuel flow passage; a cover ring that is disposed on an outer side of the nozzle body so as to form air flow passages that allow air to jet out toward a front side; and fuel injection nozzles that are provided in a leading end part of the nozzle body at predetermined intervals in a circumferential direction and extend through the cover ring so as to be able to inject fuel from the fuel flow passage toward the front side. The cover ring has an outer circumferential surface cover that covers an outer circumferential surface of the nozzle body, a leading end surface cover that covers a leading end surface of the nozzle body, and a plurality of inclined flow passages that extend through the leading end surface cover in a thickness direction and are inclined in a predetermined direction relative to a direction of a central axis. 1. A combustor nozzle , comprising:a nozzle body that is provided with a fuel flow passage and extends in a rod shape;a cover ring that is disposed on an outer side of an outer circumference of a leading end of the nozzle body with a predetermined clearance thereto so as to form an air flow passage that allows air to jet out toward a front side; andfuel injection nozzles that are provided in a leading end part of the nozzle body at predetermined intervals in a circumferential direction and extend through the cover ring so as to be able to inject fuel from the fuel flow passage toward the front side,wherein the cover ring has:an outer circumferential surface cover that has a cylindrical shape and covers an outer circumferential surface of the nozzle body;a leading end surface cover that has an annular shape and covers a leading end surface of the nozzle body; andinclined flow passages that extend through the leading end surface cover in a thickness direction ...

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Номер записи: 46
20-06-2019 дата публикации

Automated tuning of gas turbine combustion systems

Номер: US20190186382A1
Автор: Christopher Chandler
Принадлежит: Gas Turbine Efficiency Sweden AB

The present disclosure provides a tuning system for tuning the operation of a gas turbine. The system comprises operational turbine controls for controlling operational control elements of the turbine, including at least one of turbine fuel distribution or the fuel temperature. The system also has a tuning controller communicating with the turbine controls. The tuning controller is configured to tune the operation of the turbine in accordance with the following steps: receiving operational data about the turbine, providing a hierarchy of tuning issues, determining whether sensed operational data is within predetermined operational limits and producing one or more indicators. If the operational data is not within predetermined operational limits, the tuning controller will rank the one or more indicators to determine dominant tuning concern, and tune the operation of the turbine based on dominant tuning concern. Also provided herein are a method and computer readable medium for tuning.

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Номер записи: 47
13-07-2017 дата публикации

SAFETY BURNER SYSTEM WITH AUTOMATIC SHUT-OFF

Номер: US20170198920A1
Автор: Golomb Adam S.
Принадлежит:

A gas burner safety system comprises dual sensor arrays, the first array positioned proximal to the gas burner and the second array positioned proximal to a control used to turn on and off and regulate the flame of the gas burner. The first array senses the flame components such that a flame signature is obtained when no object is placed on or above the flame and a flame image is obtained when an object is proximal to the flame. By comparing the flame signature and the flame image, a central control unit operatively connected to the sensor arrays can determine the presence or absence of an object proximal to the flame. The second sensor array is positioned to detect a human hand proximal to the control. In operation, if the flame image matches the flame signature and a human hand is not detected proximal to the control, the central control unit turns off the gas burner by causing the closure of a valve in the gas supply line to the gas burner. 1. A gas burner safety system for use on a gas range , the gas burner safety system comprising:a manual control;a valve operatively connected to the manual control;a gas supply line having the valve connected across it, such that the valve may shut off and turn on the gas supply line;a burner on the gas range connected to the gas supply line;a range sensor placed proximally to the burner, wherein the range sensor detects a first measured attribute of the area proximal to the burner;a manual control sensor placed proximally to the manual control, wherein the manual control sensor detects a second measured attribute of the area proximal to the manual control;a central control unit connected to the range sensor, the manual control sensor, and the valve, the central control unit including a memory;a detector connected to the central control unit, the detector being configured to accurately assess levels of emissions emanating from the range;a first stored attribute for the burner stored in the memory;a second stored attribute for ...

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Номер записи: 48
27-06-2019 дата публикации

System, device, and method for oven temperature control in tortilla and tortilla chip production

Номер: US20190191717A1
Автор: Bartlett Brian E., Cotton Douglas W.
Принадлежит:

A heat controlled oven system includes a plurality of oven levels, including an oven belt and gas burners; a gas flow network, including a gas supply line, a variable flow control valve, and on/off flow control valves; and a heat control unit, including a processor, a non-transitory memory, and input/output component, a heat modeler, a heat manager, a feedback controller, and a valve controller, such that the heat control unit is configured to calculate an estimated heat demand to adjust to a temperature set point, based on a heat model of the at least one oven level, and further calculates an optimized heat demand using a control loop feedback algorithm. Also disclosed is a method of heat calculation for an oven, including defining a heat model, calculating and optimizing the estimated heat demand, calculating and setting a variable valve position for the gas burners. 1. A heat control unit , comprising:a) a processor;b) a non-transitory memory;c) an input/output component;d) a heat modeler, which is configured to store a heat model for at least one oven level in an oven, wherein the heat model comprises a heat capacity, a general heat loss, a product heat loss, and a heat required to hold a current temperature;e) a heat manager, which is configured to calculate an estimated heat demand to adjust the at least one oven level to a temperature set point, using the heat model of the at least one oven level; andwherein the heat control unit is configured to control at least one gas burner in the at least one oven level, in order to control a baking temperature of the at least one oven level;wherein the heat manager calculates the estimated heat demand as a sum of the general heat loss, the product heat loss, and a heat required to change a current temperature.2. The heat control unit of claim 1 , wherein the heat control unit further comprises:a feedback controller, which is configured to execute a control loop feedback algorithm to calculate an optimized heat demand ...

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Номер записи: 49
27-07-2017 дата публикации

Auxiliary Burner Assembly and Control System for Combusting Vent Gases in Petroleum Production and Processing

Номер: US20170211806A1
Автор: Howard L. Malm, Leslie A. Keast
Принадлежит: Rem Technology Inc

An auxiliary burner assembly is provided within the exhaust stack associated with a main burner assembly for combusting vent gases from a petroleum production and processing facility. The auxiliary burner unit is located within the exhaust stack associated with the main burner assembly. The auxiliary burner assembly enables the same exhaust stack as the main burner assembly while effective combusting exhaust gases and providing heating of a medium when required. The auxiliary burner is utilized when the main burner assembly is inactive and can be utilized to improve airflow to initiate the main burner assembly. An auxiliary burner controller system is utilized to control operation of the auxiliary burners.

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Номер записи: 50
27-07-2017 дата публикации

Two-Stage Fluid Control Valve Having A First Stage Mechanical Valve And A Second Stage Microvalve

Номер: US20170211809A1
Автор: Arunasalam Parthiban, Fuller E. Nelson, Ojeda, SR. Joe A.
Принадлежит: DUNAN MICROSTAQ, INC.

A two-stage fluid control valve includes a first stage mechanical control valve movable between an open position and a leak-free closed position, and a second stage microvalve configured to control the flow of fluid through a fluid outlet of the two-stage fluid control valve when the first stage mechanical control valve is in the open position. 1. A two-stage fluid control valve comprising:a first stage mechanical control valve movable between an open position and a leak-free closed position; anda second stage microvalve configured to control the flow of fluid through a fluid outlet of the two-stage fluid control valve when the first stage mechanical control valve is in the open position.2. The two-stage fluid control valve according to claim 1 , wherein a seal is disposed between the first stage mechanical control valve and the second stage microvalve claim 1 , and wherein the seal is configured to provide a fluid-tight seal between the first stage mechanical control valve and the second stage microvalve such that fluid is prevented from flowing therebetween when the first stage mechanical control valve is in the leak-free closed position.3. The two-stage fluid control valve according to claim 1 , wherein the two-stage fluid control valve is configured to function as a control valve for a burner in one of a gas range and a gas oven claim 1 , and wherein the microvalve is configured to control one of a flame and temperature of the burner.4. The two-stage fluid control valve according to claim 1 , wherein the first stage mechanical valve includes:an outer valve body having a bore formed therein;an inner valve body disposed in the bore of the outer valve body and having a longitudinally extending bore formed therein; anda valve seat member mounted in the bore of the inner valve body, the valve seat member having an axially extending passageway formed therein and an annular valve seat extending outwardly about the axially extending passageway at one end thereof, the ...

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Номер записи: 51
27-07-2017 дата публикации

HEATING FURNACE USING AUTO HEATING COMMISSIONING MODE

Номер: US20170211823A1
Автор: Beste Mark G., Perez Eric M., Schneider Steven
Принадлежит:

A heating control device including input/output ports, a memory operable to store smoke output thresholds, and a microprocessor. The microprocessor is configured to transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration to burn a lubricant at a first temperature where less than all of the burners are active. The microprocessor is further configured to obtain a smoke output measurement for the first temperature, compare the smoke output measurement to the smoke output threshold, and transmit a second electrical signal to transition the air circulation fan to a second speed to burn the lubricant at a second temperature that is greater than the first temperature when the smoke output measurement is less than the smoke output threshold and is less than the first temperature when the smoke output measurement is greater than the smoke output threshold. 1. A heating control device comprising:input/output (I/O) ports configured to transmit and receive electrical signals;a memory operable to store a smoke output threshold; transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration with at least one active burner from a plurality of burners to burn a lubricant at a first temperature, wherein less than all of the burners are active when the heating unit is in the first configuration;', 'obtain a smoke output measurement for the first temperature;', 'compare the smoke output measurement to the smoke output threshold; and', 'transmit a second electrical signal to transition the air circulation fan from the first speed to a second speed to burn the lubricant at a second temperature, wherein the second temperature is greater than the first temperature when the smoke output measurement is less than the smoke output threshold, and wherein the second temperature is less than the first temperature when the smoke output measurement is greater ...

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Номер записи: 52
26-07-2018 дата публикации

FLOW RATIO CALCULATION DEVICE, CONTROL DEVICE PROVIDED WITH SAME, GAS TURBINE PLANT PROVIDED WITH SAID CONTROL DEVICE, FLOW RATIO CALCULATION METHOD, AND METHOD FOR CONTROLLING FUEL SYSTEM

Номер: US20180209352A1
Автор: ENDO Yoji, NAKAGAWA Jotaro, Ochiai Yoshiaki
Принадлежит:

A flow ratio calculation device is provided with: a flow volume ratio computer that, using a predetermined relationship between a first parameter that can express a combustion state in a combustor and a flow volume ratio of fuels flowing through multiple fuel systems, finds a flow volume ratio based on the value of the first parameter; a correction value computer that finds a correction value of the flow volume ratio when the load of a gas turbine changes; a fluctuation sensor that senses fluctuations in a value correlated with the gas turbine load; and a corrector that corrects the flow volume ratio found by the flow volume ratio computer with the correction value found by the correction value computer when a fluctuation in the load correlated value is sensed by the fluctuation sensor. 1. A flow ratio calculation device used in a gas turbine , the gas turbine including multiple fuel systems , a compressor that generates compressed air by compressing air , a combustor that generates a combustion gas by burning fuels from the multiple fuel systems in the compressed air , and a turbine driven by the combustion gas , the flow ratio calculation device calculating a flow volume ratio of the fuels flowing in the multiple fuel systems , and comprising:a flow volume ratio computer that receives a value of a first parameter among multiple parameters capable of expressing a combustion state in the combustor, and finds the flow volume ratio based on the received value of the first parameter using a predetermined relationship between the first parameter and the flow volume ratio;a correction value computer that finds a correction value of the flow volume ratio at a time when a load of the gas turbine changes;a fluctuation sensor that senses a fluctuation in a load correlated value that is a value changing in correlation with changes in the load of the gas turbine or that is a value of the load; anda corrector that, upon a fluctuation in the load correlated value being sensed by ...

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Номер записи: 53
26-07-2018 дата публикации

HEATER DEVICE AND METHOD FOR OPERATING A HEATER DEVICE

Номер: US20180209648A1
Автор: Fernandes Garcia Lima Duarte Nuno, Marques Marco, Oliveira Simoes Mauro André, Pacheco Monteiro Luis Miguel, Pereira Joel Filipe, Salustio Sergio, Vieira Ricardo Jorge de Sousa
Принадлежит:

A heater device including at least one control and/or regulating unit, which is provided to set an air ratio of a combustion process to a setpoint air ratio. It is provided that the control and/or regulating unit is provided to ascertain a power correction factor in at least one operating state and take it into consideration in the setting of the air ratio. 110-. (canceled)11. A heater device including at least one control and/or regulating unit , the control and/or regulating unit provided to set an air ratio of a combustion process to a setpoint air ratio , the control and/or regulating unit configured to ascertain a power correction factor in at least one operating state and take the ascertained power correction factor into consideration in the setting of the air ratio.12. The heater device as recited in claim 11 , wherein the power correction factor corresponds to a quotient of a required input power and an actual input power.13. The heater device as recited in claim 12 , wherein the control and/or regulating unit is configured to ascertain at least one of the required input power and the actual input power claim 12 , based on at least one of: (i) a requested output power claim 12 , and (ii) an actual output power and a thermal efficiency.14. The heater device as recited in claim 13 , wherein the control and/or regulating unit is configured to ascertain at least one of the requested output power and the actual output power claim 13 , based on a temperature of at least one of a fluid and a fluid flow.15. The heater device as recited in claim 11 , wherein the control and/or regulating unit is configured to ascertain the power correction factor in the at least one operating state at time intervals of no more than 30 s.16. The heater device as recited in claim 11 , wherein the control and/or regulating unit is configured to take at least the power correction factor into consideration for the determination of a required fuel flow.17. The heater device as recited in ...

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Номер записи: 54
04-07-2019 дата публикации

CLOSED-LOOP PROGRAMMING AND CONTROL OF A COMBUSTION APPLIANCE

Номер: US20190203936A1
Автор: Bergum Glenn, Graham Bernard, Hazzard Frederick
Принадлежит:

Methods and systems for programming and controlling a control system of a gas valve assembly. The methods and systems include programming a control system in an automated manner to establish an air-fuel ratio based at least in part on a burner firing rate. The established air-fuel ratio may be configured to facilitate meeting a combustion constituent set point of combustion constituents in the combustion exhaust. The methods and systems include controlling operation of a combustion appliance based on closed-loop control techniques and utilizing feedback from a sensor measuring combustion constituents in exhaust from a combustion chamber in the combustion appliance. The combustion constituents on which control of the combustion appliance may be determined include oxygen and/or carbon dioxide. 1. A valve for supplying a fuel flow to a combustion chamber , wherein a fan provides an air flow to the combustion chamber , the valve comprising:a housing;a controller housed by the housing, the controller configured to control an air-fuel ratio of a fluid flow to the combustion chamber by adjusting the fuel flow and/or air flow to the combustion chamber;an input/output port in communication with the controller; receive via the input/output port a measure of a combustion constituent exiting the combustion chamber;', 'compare the measure of the combustion constituent exiting the combustion chamber to a set point; and', 'control the air-fuel ratio of the fluid flow to the combustion chamber based at least in part on the comparison of the measure of the combustion constituent exiting the combustion chamber to the set point., 'wherein the controller is configured to2. The valve of claim 1 , wherein the controller is configured to:determine a difference between the measure of the combustion constituent exiting the combustion chamber and the set point;when the difference reaches or goes beyond a threshold, adjust the air-fuel ratio in the fluid flow to the combustion chamber; ...

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Номер записи: 55
04-07-2019 дата публикации

Cooktop appliance with a gas burner

Номер: US20190203942A1
Автор: Jeremy Michael Green
Принадлежит: Haier US Appliance Solutions Inc

A cooktop appliance includes a gas burner. A primary control valve is coupled to the gas burner. The primary control valve is manually adjustable to regulate a flow of gaseous fuel to the gas burner. A secondary control valve is connected in series between the primary control valve and the gas burner. A controller is in communication with the secondary control valve. The controller is configured to receive a temperature measurement from a temperature sensor and to adjust the secondary control valve in response to the temperature measurement from the temperature sensor.

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Номер записи: 56
02-08-2018 дата публикации

INTELLIGENT CONTROL OF COMBUSTION WITH TIME SERIES AND BYPASS FILTERS AND CORRESPONDING SYSTEM

Номер: US20180216820A1
Автор: Bulat Ghenadie, Dolmansley Timothy
Принадлежит: SIEMENS AKTIENGESELLSCHAFT

A method for predicting a combustion error type of a combustion flame. A raw signal of an error parameter of the combustion flame within a predefined time span is measured, the error parameter is adapted for determining the combustion error type. A predefined frequency range from the raw signal is extracted using a by-pass filter, where the raw signal is decomposed. The number of peaks of the predefined frequency range within the time span is counted. An actual reference value is determined by dividing the number of counted peaks by the time span. The actual reference value is compared with a nominal reference value, wherein the nominal reference value is determined by dividing a predefined number of peaks of the predefined frequency range by the time span, so that the combustion error type is predictable if the actual reference value differs to the nominal reference value. 1. A method for predicting a combustion error type of a combustion flame burning in a combustion chamber of the combustion system for a gas turbine engine , the method comprising:measuring a raw signal of an error parameter of the combustion flame within a predefined time span, wherein the error parameter is adapted for determining the combustion error type,extracting at least one predefined frequency range from the raw signal by using at least one by-pass filter, so that the raw signal is decomposed,counting a number of peaks of the at least one predefined frequency within the time span,determining an actual reference value by dividing the number of counted peaks by the time span,comparing the actual reference value with a nominal reference value, wherein the nominal reference value is determined by dividing a predefined number of peaks of the at least one predefined frequency range by the time span, so that the combustion error type is predictable if the actual reference value differs to the nominal reference value.2. The method according to claim 1 ,wherein the combustion error type is ...

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Номер записи: 57
20-08-2015 дата публикации

METHOD FOR REGULATING A HEATING UNIT, AND HEATING UNIT

Номер: US20150233578A1
Автор: de Sousa Vieira Ricardo Jorge, Marques Marco, Monteiro Luis, Rocha Gerardo, Simoes Mauro
Принадлежит:

A method for regulating a heating unit, and heating unit, are provided. A method is provided for regulating a heating unit, and to a heating unit which includes a combustion chamber, combustion air being introduced into the combustion chamber via a controllable blower. A rotational speed of the blower wheel is detected. The purpose is to make it possible to ascertain an air volume flow with little complexity. The method is characterized in that a static pressure and/or a power consumption of the blower is/are ascertained, a volume flow of the combustion air being determined on the basis of the rotational speed in conjunction with the static pressure or the power consumption. For this purpose, the heating unit includes a rotational speed sensor and a pressure sensor and/or a power sensor. 16.-. (canceled)7. A method for regulating a heating unit that includes a combustion chamber into which combustion air is introduced via a controllable blower having a blower wheel , comprising:detecting a rotational speed of the blower wheel;ascertaining at least one of a static pressure and a power consumption of the blower; anddetermining a volume flow of the combustion air on the basis of the rotational speed in conjunction with at least one of the static pressure and the power consumption.8. The method as recited in claim 7 , further comprising ascertaining at least one reference value for at least one of a pressure coefficient and a power coefficient as a function of a volume flow coefficient claim 7 , wherein the at least one reference value is taken into account when determining the volume flow.9. The method as recited in claim 8 , wherein the at least one reference value includes a plurality of reference values claim 8 , the method further comprising storing the reference values as at least one of a pressure coefficient characteristic curve and a power coefficient characteristic curve.10. The method as recited in claim 7 , wherein the power consumption of the blower is ...

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Номер записи: 58
09-07-2020 дата публикации

METHOD OF OPERATING AN OVEN APPLIANCE BASED ON FUEL TYPE

Номер: US20200217504A1
Автор: Hensley Amelia Lear
Принадлежит:

An oven appliance and a method of operating the same are provided. The oven appliance includes a heating element, such as a cooktop gas burner and/or a gas heating element within a cooking chamber, which generate heat by burning a flow of fuel. A fuel regulating device, such as a bimetal or solenoid valve, is operably coupled to the heating element to selectively provide the flow of fuel to the heating element. A controller is configured for obtaining a fuel type of the flow of fuel and adjusting the operation of the fuel regulating device based at least in part on the fuel type of the flow of fuel. 1. An oven appliance defining a vertical , a lateral , and a transverse direction , the oven appliance comprising:a cabinet;a cooking chamber positioned within the cabinet;a heating element for generating thermal energy by burning a flow of fuel;a fuel regulating device operably coupled to the heating element to selectively providing the flow of fuel to the heating element; and obtaining a fuel type of the flow of fuel; and', 'adjusting the operation of the fuel regulating device based at least in part on the fuel type of the flow of fuel., 'a controller operably coupled to the fuel regulating device, the controller being configured for2. The oven appliance of claim 1 , wherein the heating element is a gas heating element positioned within the cooking chamber.3. The oven appliance of claim 1 , wherein the heating element is a gas burner positioned on a cooktop of the oven appliance.4. The oven appliance of claim 1 , wherein the fuel regulating device comprises a bimetal or a solenoid control valve.5. The oven appliance of claim 1 , wherein obtaining the fuel type of the flow of fuel comprises:determining a position of a selector switch that is set by a user.6. The oven appliance of claim 1 , wherein obtaining the fuel type of the flow of fuel comprises:determining an input from a user interface panel of the oven appliance.7. The oven appliance of claim 1 , wherein ...

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Номер записи: 59
25-07-2019 дата публикации

Ignition Control Systems for Fuel-Fired Devices

Номер: US20190226676A1
Автор: Akbarimonfared Amin, Gamboa Jorge M., Glass Robert S., Thurlkill Stephen
Принадлежит:

A fuel-fired device can include an air-moving device that mixes air and a fuel to generate a fuel-air mixture. The fuel-fired device can also include an air box that provides the air to the air-moving device, and a fuel valve that provides the fuel to the air-moving device, where the fuel valve includes a tracking port coupled to the air box, where the tracking port detects a pressure of the air box. The fuel-fired device can further provide a pressure-regulating device disposed between a pressurized component and the tracking port of the fuel valve. The flow regulating device can control, during an ignition phase of operation, an amount of the fuel provided by the fuel valve to the air-moving device. 1. A fuel-fired device comprising:an air-moving device that mixes air and a fuel to generate a fuel-air mixture;an air box that provides the air to the air-moving device;a fuel valve that provides the fuel to the air-moving device, wherein the fuel valve comprises a tracking port coupled to the air box, wherein the tracking port detects a pressure of the air box; anda pressure-regulating device disposed between a pressurized component and the tracking port of the fuel valve,wherein the pressure regulating device controls, during an ignition phase of operation, an amount of the fuel provided by the fuel valve to the air-moving device.2. The fuel-fired device of claim 1 , wherein the pressure-regulating device is idle during normal operations.3. The fuel-fired device of claim 1 , wherein the pressure-regulating device comprises a solenoid valve.4. The fuel-fired device of claim 3 , wherein the solenoid valve controls a reference pressure to the fuel valve by closing during the ignition phase of operation.5. The fuel-fired device of claim 3 , wherein the solenoid valve energizes to close during the ignition phase of operation.6. The fuel-fired device of claim 3 , wherein the solenoid valve de-energizes to close during the ignition phase of operation.7. The fuel-fired ...

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Номер записи: 60
16-07-2020 дата публикации

HEATER STRUCTURE

Номер: US20200224928A1
Автор: HOME WILLIAM
Принадлежит:

A heater structure includes a heater body including a burner connected to a valve switch. A pilot fire assembly is covered by a protective cover that has ventilation holes. A switch unit includes an ignition switch, a shut-down switch, an ignition operator, and a shut-down operator. The ignition operator and the shut-down operator are structured to provide a swingable arrangement. The ignition operator may be operated to contact and press the fuel gas valve rod and the ignition switch to open the valve switch for supply fuel gas to the burner and to activate an ignition circuit to cause successive shootings of an ignition pin of the pilot fire assembly to set a flame on the burner. The shut-down operator is operated to contact and press the shut-down switch, so as to cut off a signal of the thermocouple and thus cut off the supply of the fuel gas. 1. A heater structure , comprising:a heater body, which comprises a burner, which is connected to a gas supply tube, and a valve switch, which is adapted to connect to a fuel gas supply source, the valve switch being provided on a top side thereof with a fuel gas valve rod, which functions to control the valve switch to supply or not supply fuel gas to the burner;a pilot fire assembly, which is mounted to the heater body at a location adjacent to the burner, the pilot fire assembly comprising a pilot fire tube, an ignition pin, and a thermocouple, the pilot fire assembly being covered and housed by a protective cover, the protective cover being formed with a plurality of ventilation holes, a guiding space being formed between one side of the protective cover and the heater body; anda switch unit, which is mounted by a mounting frame to the valve switch, the mounting frame comprising an ignition switch connected to an ignition circuit of the ignition pin, a shut-down switch connected to a circuit of the thermocouple, an ignition operator, and a shut-down operator, wherein the ignition operator and the shut-down operator ...

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Номер записи: 61
23-07-2020 дата публикации

Pneumatic actuating injet valve with delayed shutoff

Номер: US20200232640A1
Автор: Hans Juergen Paller, Paul Bryan Cadima
Принадлежит: Haier US Appliance Solutions Inc

An injet for a gas burner includes a first gas orifice and a second gas orifice. An injet body defines an air passage and a gas passage. The first and second gas orifices are mounted to the injet body. A pneumatically actuated gas valve blocks a flow of gaseous fuel through the gas passage to the second gas orifice in a closed configuration. The pneumatically actuated gas valve is configured to adjust from the closed configuration to an open configuration in response to a flow of air through the air passage. A flow restriction body is disposed upstream of the pneumatically actuated gas valve. The flow restriction body defines a through hole via which air is flowable to pneumatically actuated gas valve.

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Номер записи: 62
30-08-2018 дата публикации

METHOD OF AND SYSTEM FOR FLAME SENSING AND DIAGNOSTIC

Номер: US20180245819A1
Автор: ENGLER MICHAEL
Принадлежит: Lennox Industries Inc.

A method of determining presence of a flame in a furnace of a heating, ventilation, and air conditioning (HVAC) system. The method comprises determining, using a controller, whether a processor signal (G) is active, responsive to a determination that the processor signal (G) is active, determining, using the controller prior to assertion of a flame-test input control signal, an output state of a first comparator, responsive to a determination that the output state of the first comparator is high, determining, using the controller prior to assertion of the flame-test input control signal, an output state of a second comparator, and responsive to a determination that the output state of the second comparator is low, transmitting, using the controller, a notification that a flame is present. 1. A method of determining presence of a flame in a furnace of a heating , ventilation , and air conditioning (HVAC) system , the method comprising:determining, using a controller, whether a processor signal (G) is active;responsive to a determination that the processor signal (G) is active, determining, using the controller prior to assertion of a flame-test input control signal, an output state of a first comparator;responsive to a determination that the output state of the first comparator is low, determining, using the controller prior to assertion of the flame-test input control signal, the output state of the second comparator; andresponsive to a determination that the output state of the second comparator is low, transmitting, using the controller, a notification that a problem exists.2. The method of further comprising:responsive to a determination that the output state of the second comparator is high, transmitting, using the controller, a notification that no flame is present;asserting the flame-test input control signal;determining, using the controller, whether the output state of the first comparator flips from low to high and the output state of the second comparator ...

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Номер записи: 63
17-09-2015 дата публикации

INTEGRATED SMOKE MONITORING AND CONTROL SYSTEM FOR FLARING OPERATIONS

Номер: US20150260397A1
Автор: Abdallah Bilal, Diepenbroek Annemarie, Ibrahim Mohamed M., Kar Chinmaya, TALASILA VISWANATH, Venkoparao Vijendran G.
Принадлежит: HONEYWELL INTERNATIONAL INC.

A flare monitoring and control system monitors parameters that affect the amount of smoke generated during a flaring operation. The system receives data relating to the parameters, and analyzes the data relating to the parameters. The system predicts an impending increase in the amount of smoke generated during the flaring operation, and varies a value of one or more parameters to prevent the impending increase in the amount of smoke generated during the flaring operation. 1. A flare monitoring and control system comprising: monitor a plurality of parameters, the parameters affecting an amount of smoke generated during a flaring operation;', 'receive data relating to the plurality of parameters;', 'analyze the data relating to the plurality of parameters;', 'predict an impending increase in the amount of smoke generated during the flaring operation; and', 'vary a value of one or more parameters to prevent the impending increase in the amount of smoke generated during the flaring operation., 'a computer processor operable to2. The flare monitoring and control system of claim 1 , wherein the computer processor is operable to suggest preventative actions to eradicate or decrease the impending increase in the amount of smoke generated during the flaring operation.3. The flare monitoring and control system of claim 1 , wherein the prediction of the impending increase in the amount of smoke generated during the flaring operation is based on an identification of a valve failure claim 1 , a compressor problem claim 1 , or a suboptimal gas composition with respect to combustibility.4. The flare monitoring and control system of claim 3 , wherein the identification of the compressor problem comprises one or more of a shaft failure claim 3 , a bearing failure claim 3 , a blade failure claim 3 , a surge failure claim 3 , a motor failure claim 3 , and a gear failure.5. The flare monitoring and control system of claim 4 , wherein the compressor problem comprises a time lag between ...

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Номер записи: 64
08-08-2019 дата публикации

AUDIO SIGNAL DRIVEN ANALOG FLAME DISPLAY

Номер: US20190242577A1
Автор: FARRER Trent, Mann William H.
Принадлежит: TK PRODUCTS, LLC

A “flame show” is responsive to an audio input signal such as music. A base unit including an analog base unit controller circuit is arranged to receive an audio input signal and generate an analog control signal that is responsive to the audio input signal. The analog control signal is distributed, by wire or wireless, to one or more flame display units such as a “tiki torch.” Each flame display unit has a fuel source, and a proportional valve for controlling an amount of fuel supplied to a burner. Preferably, the control signal controls a gate terminal of a MOSFET semiconductor device, which in turn is coupled to control current in the proportional valve each each unit. By deploying multiple flame display units, all coupled to the same base unit, all of the flame display units contribute synchronously to the overall flame show. 1. A system comprising:a base unit including an analog base unit controller circuit arranged to receive an audio input signal and generate an analog control signal that is responsive to the audio input signal;a control wire connectable to the base unit to distribute the analog control signal; anda flame display unit electrically connectable to the control wire to receive the analog control signal;the flame display unit including a combustible fuel source to generate an open flame;and the flame display unit including a proportional valve to control flow of fuel from the fuel source so as to controllably vary a height of the open flame responsive to the analog control circuit during operation of the flame display unit.2. The system of wherein:the flame display unit includes a flame control circuit arranged to receive the analog control signal and generate an analog valve position signal; andthe flame control circuit is coupled to utilize the analog valve position signal to control electrical current in the proportional valve during operation, thereby producing an active flame show responsive to the audio input signal.3. The system of wherein: ...

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Номер записи: 65
08-08-2019 дата публикации

FUEL SUPPLY SYSTEM FOR A GAS BURNER ASSEMBLY

Номер: US20190242583A1
Автор: Paller Hans Juergen
Принадлежит:

A fuel supply system for a gas burner assembly is provided. The gas burner assembly includes an inner burner stage positioned concentrically within an outer burner stage. The fuel supply system includes a fuel supply for providing a primary flow of fuel through a primary fuel conduit. A control valve and a modulating valve are operably coupled in series on the primary fuel conduit for regulating the primary flow of fuel. A first fuel supply conduit and a second fuel supply conduit tee off the primary fuel conduit to supply fuel to the outer burner stage and the inner burner stage, respectively. A shutoff valve is operably coupled to the first fuel supply conduit for stopping the flow of fuel through the first fuel supply conduit, e.g., during a simmer operation. 1. A cooktop appliance , comprising:a top panel;a gas burner assembly positioned at the top panel, the gas burner assembly comprising one or more burner bodies defining a first plurality of flame ports, a first fuel chamber in fluid communication with the first plurality of flame ports, a second plurality of flame ports, and a second fuel chamber in fluid communication with the second plurality of flame ports; and a fuel supply for providing a primary flow of fuel through a primary fuel conduit;', 'a control valve operably coupled to the primary fuel conduit for regulating the primary flow of fuel;', 'a modulating valve operably coupled to the primary fuel conduit in series with the control valve for regulating the primary flow of fuel;', 'a first fuel supply conduit providing fluid communication between the primary fuel conduit and the first fuel chamber; and', 'a second fuel supply conduit providing fluid communication between the primary fuel conduit and the second fuel chamber., 'a fuel supply system comprising2. The cooktop appliance of claim 1 , comprising:a shutoff valve operably coupled to the first fuel supply conduit for selectively stopping the flow of fuel through the first fuel supply conduit.3. ...

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Номер записи: 66
06-09-2018 дата публикации

WATER HEATING SYSTEM

Номер: US20180252437A1
Автор: MUKO Takao, Okamoto Shinichi
Принадлежит: NORITZ CORPORATION

A plurality of water heaters are connected in parallel with respect to a hot water supply path, and each of the plurality of water heaters has an exhaust path connected to an exhaust path assembly. Each of a plurality of sensing units is configured to be shifted from an electrically conducting state to an electrically non-conducting state when each of the plurality of sensing units senses an abnormal condition about air supply or exhaust. A series circuit of the plurality of sensing units is electrically connected in series to a resistance element between the power supply line and the ground line. The controller is configured to monitor an abnormal condition about air supply or exhaust based on a voltage on a node between the series circuit and the resistance element. 1. A water heating system of a combustion heating type of a forced exhaust mode , the water heating system comprising:a plurality of water heaters connected in parallel with respect to a hot water supply path, the plurality of water heaters each having an exhaust path connected to an exhaust path assembly;a controller configured to collectively control the plurality of water heaters; anda plurality of sensing units,each of the plurality of sensing units being configured to be shifted from an electrically conducting state to an electrically non-conducting state when each of the plurality of sensing units senses an abnormal condition about air supply or exhaust,the plurality of sensing units being electrically connected in series between a power supply line and a ground line,a series circuit of the plurality of sensing units being electrically connected in series to a resistance element between the power supply line and the ground line,the controller being configured to monitor the abnormal condition about air supply or exhaust based on a voltage on a node between the series circuit and the resistance element.2. The water heating system according to claim 1 , whereinthe plurality of sensing units include ...

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Номер записи: 67
15-08-2019 дата публикации

FLAME CONTROL SYSTEMS AND METHODS FOR FURNACES

Номер: US20190249882A1
Автор: Harris William M.
Принадлежит:

A furnace includes a controller configured to instruct a blower of the furnace to increase an exhaust flowrate of the furnace, instruct a gas regulation device of the furnace to increase a fuel input rate of the furnace, or both in response to a determination that the fuel input rate is below a threshold fuel input rate for a threshold time period. In some embodiments, the controller is configured to instruct the blower to maintain an increased exhaust flowrate for a flame-stabilizing time period the gas regulation device to maintain an increased fuel input rate for the flame-stabilizing time period, or both. 1. A furnace , comprising:a controller configured to instruct a blower of the furnace to increase an exhaust flowrate of the furnace, instruct a gas regulation device of the furnace to increase a fuel input rate of the furnace, or both in response to a determination that the fuel input rate is below a threshold fuel input rate for a threshold time period.2. The furnace of claim 1 , wherein the controller is configured to instruct the blower to maintain an increased exhaust flowrate for a flame-stabilizing time period claim 1 , instruct the gas regulation device to maintain an increased fuel input rate for the flame-stabilizing time period claim 1 , or both.3. The furnace of claim 1 , wherein the controller is configured to instruct the blower to increase the exhaust flowrate and instruct the gas regulation device to increase the fuel input rate in response to the determination that the fuel input rate is below the threshold fuel input rate for the threshold time period.4. The furnace of claim 1 , wherein the controller is configured to instruct the gas regulation device to increase the fuel input rate in response to the determination claim 1 , and wherein the controller is configured to cycle the gas regulation device through a startup mode to increase the fuel input rate.5. The furnace of claim 1 , further comprising the blower and the gas regulation device ...

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Номер записи: 68
01-10-2015 дата публикации

Pilot light control for an appliance

Номер: US20150276268A1
Автор: David Heil, Frederick Hazzard, Ravindra Khosla
Принадлежит: Honeywell International Inc

A device for igniting a pilot light for a heating appliance or for re-igniting the pilot. The device may monitor a thermopile at the pilot to determine if the pilot is lit and, if not, attempt to relight it. If the device fails to relight the pilot, it may continue attempting to relight the pilot until the stored energy is nearly depleted. Before the stored energy is depleted, the device may send a message indicating a failure to relight. The last of stored energy may alert a homeowner with an alarm that the appliance control has shut down and the pilot could not be relit. If the amount of energy stored drops below a specified threshold and the device successfully lights the pilot, it may restore the control to normal operation, and replenish the stored energy. The device may do a standing pilot or an intermittent pilot.

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Номер записи: 69
22-08-2019 дата публикации

SYSTEM AND METHOD FOR OPERATING A COMBUSTION CHAMBER

Номер: US20190257519A1
Автор: HUANG Dayu, MURPHY ROBERT FREDERICK, SHI XIAOLEINMN, Tu Jilin, Yang Shizhong
Принадлежит: General Electric Technology GmbH

A method for operating a combustion chamber is provided. The method includes obtaining a carbon monoxide reading at an exit of the combustion chamber via a carbon monoxide sensor, and deriving an oxygen set point trim based at least in part on the carbon monoxide reading and a carbon monoxide set point via a controller. The method further includes determining a stability status of the combustion chamber via a combustion stability sensor, and adjusting an oxygen set point of the combustion chamber with the oxygen set point trim based at least in part on the stability status via the controller. The oxygen set point defines a desired oxygen level at the exit of the combustion chamber. 1. A method for operating a combustion chamber comprising:obtaining a carbon monoxide reading at an exit of the combustion chamber via a carbon monoxide sensor;deriving an oxygen set point trim based at least in part on the carbon monoxide reading and a carbon monoxide set point via a controller;determining a stability status of the combustion chamber via a combustion stability sensor; andadjusting an oxygen set point of the combustion chamber with the oxygen set point trim based at least in part on the stability status via the controller, the oxygen set point defining a desired oxygen level at the exit of the combustion chamber.2. The method of claim 1 , wherein the combustion stability sensor is a flame stability sensor and the stability status is a flame status.3. The method of claim 2 , wherein the flame status indicates that a flame is present within the combustion chamber.4. The method of further comprising:obtaining a nitrogen oxide reading at the exit of the combustion chamber via a nitrogen oxide sensor;deriving a stoichiometry set point trim based at least in part on the nitrogen oxide reading and a nitrogen oxide set point via the controller; andadjusting a stoichiometry set point with the stoichiometry set point trim based at least in part on the carbon monoxide reading via ...

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Номер записи: 70
13-08-2020 дата публикации

METHOD OF OPERATING AN AIR PUMP FOR A BOOSTED GAS BURNER ASSEMBLY

Номер: US20200256558A1
Автор: Cadima Paul Bryan
Принадлежит:

A gas burner assembly and a method of operating the same are provided. The gas burner assembly includes fuel regulating device for providing a flow of fuel and an air pump for providing a flow of air to a boost burner for combustion. The method includes stopping the flow of fuel using the fuel regulating device and ramping down the operation of the air pump to slowly stop the flow of air. For example, the flow rate of the flow of air may decrease linearly over a predetermined time period to ensure a lean fuel/air mixture is not provided to the boost burner which may result in undesirable flame characteristics. 1. A method of operating a gas burner assembly , the gas burner assembly comprising a boost burner , a fuel regulating device for providing a flow of fuel to the boost burner , and an air pump for providing a flow of air to the boost burner , the method comprising:stopping the flow of fuel using the fuel regulating device; andramping down the operation of the air pump to slowly stop the flow of air.2. The method of claim 1 , wherein stopping the flow of fuel using the fuel regulating device comprises:instantaneously changing a voltage or a valve control signal supplied to the fuel regulating device to close the fuel regulating device.3. The method of claim 1 , wherein stopping the flow of fuel using the fuel regulating device comprises:manipulating a control knob to close the fuel regulating device.4. The method of claim 1 , wherein ramping down the operation of the air pump comprises:decreasing a voltage to the air pump at a constant rate.5. The method of claim 1 , wherein ramping down the operation of the air pump comprises:decreasing an output of the air pump according to a time-varying rate.6. The method of claim 1 , wherein ramping down the operation of the air pump comprises:decreasing an output of the air pump from a steady state output to zero over a predetermined time period.7. The method of claim 6 , wherein the predetermined time period is between ...

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Номер записи: 71
29-08-2019 дата публикации

Combustion air blower

Номер: US20190263224A1
Автор: Hans Jensen, Michael Humburg
Принадлежит: Eberspaecher Climate Control Systems GmbH and Co KG

A combustion air blower, especially side channel blower, for a fuel-operated vehicle heater, includes a blower housing (38). An air flow space (44), through which combustion air being fed can flow, is formed in the blower housing (38). Air flowing over an inlet area (55) into the air flow space (44) flows to a feed area enclosing a feed wheel (48). At least one hydrocarbon storage element (70, 88) is formed in the air flow space (44), for storing gaseous hydrocarbon present in the air flow space (44).

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Номер записи: 72
29-08-2019 дата публикации

PROCESS FOR OPERATING A FUEL-OPERATED VEHICLE HEATER AND FUEL-OPERATED VEHICLE HEATER

Номер: US20190264915A1
Автор: BLASCHKE Walter, HUMBURG Michael, Jensen Hans, PFISTER Wolfgang
Принадлежит:

A fuel-operated vehicle heater includes a burner area () with a combustion chamber (); a fuel pump (); and a combustion air blower (). A pressure sensor () detects a feed back pressure. An actuating unit () actuates the fuel pump () with a predefined value of a pump operating variable, and actuates the combustion air blower with a predefined value of a blower operating variable. A heater process includes detecting the feed back pressure in case of a feed operating state set during the combustion operation and comparing the detected feed back pressure (P) with an expected feed back pressure (P) for the set feed operating state. If the detected feed back pressure deviates from the expected feed back pressure the pump operating variable is changed such that the feed back pressure changes toward the expected feed pressure and/or essentially corresponds to the expected feed back pressure. 1. A fuel-operated vehicle heater operation process comprising the steps of:providing a vehicle heater comprising: a burner area with a combustion chamber; a fuel pump for feeding fuel to the combustion chamber; a combustion air blower for feeding combustion air to the combustion chamber; a pressure sensor in association with the combustion air blower for detecting a feed back pressure downstream of the combustion air blower; and an actuating unit for actuating the fuel pump for operation of the fuel pump with a predefined value of a pump operating variable, and for actuating the combustion air blower for operation of the combustion air blower with a predefined value of a blower operating variable, and providing expected feed back information based on feed operating states, with a reference fuel, defined by the pump operating variable and the blower operating variable;detecting a feed back pressure in case of a feed operating state set during a combustion operation;comparing the detected feed back pressure with the feed back pressure to be expected for the set feed operating state; ...

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Номер записи: 73
29-08-2019 дата публикации

SYSTEM AND METHOD FOR OPTIMIZING PASSIVE CONTROL OF OSCILLATORY INSTABILITIES IN TURBULENT FLOWS

Номер: US20190264916A1
Автор: KRISHNAN ABIN, KURTHS JÜRGEN, MARWAN NORBERT, NAIR SUJITH RAMANPILLAI INDUSEKHARAN, UNNI VISHNU R.
Принадлежит:

The invention discloses a system for effecting a control strategy in a reactive flow field of a turbulent flow system. The system is configured to analyze flow field properties such as velocity, heat release rate, or mixture fraction of a device during the onset of the oscillatory instability using measures from complex network theory such as betweenness centrality, degree, or closeness. The system identifies critical regions in the flow field responsible for the oscillatory instability. Further, the system also identifies optimal control strategies to avoid the onset of oscillatory instabilities by analyzing the relative strength of various network parameters and thereby controlling oscillatory instabilities which are detrimental to the fluid dynamic system. The disclosed method and system provide for optimization of control of oscillatory instabilities in fluid dynamic systems. 1. A computer implemented method for effecting a control strategy in a reactive flow field of a turbulent flow system , comprising the steps of:a) receiving data from a sensing element connected to the turbulent system incorporating a control strategy comprising at least a passive control strategy in the reactive flow field;b) obtaining one or more flow field characteristics for the turbulent flow system selected from velocity, local reaction rate, temperature, and mixture fraction;c) constructing a complex network from a plurality of nodes and a plurality of links based on the flow field characteristics;d) obtaining an adjacency matrix of size N×N describing the complex network;e) finding network measures to characterize one or more topological features of the network selected from betweenness centrality, degree, closeness centrality, transitivity and local clustering coefficient;f) identifying one or more critical regions of the reactive flow field using topological features of the constructed complex network; andg) applying one or more modifications to the control strategy based on the ...

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Номер записи: 74
05-09-2019 дата публикации

CONTROL SYSTEM FOR CONTROLLING THE PILOT FLAME OF A COMBUSTIBLE GAS DEVICE

Номер: US20190271466A1
Автор: BUSINARO Daniele, CISCATO Michele, CROIN Marco, KUPSH James, LOLLO Nicola, MARCANZIN Renzo, SIMIONI Daniele
Принадлежит: SIT S.P.A.

Control system for controlling the pilot flame of a combustible gas device, which includes a pilot burner, a main burner, and a valve assembly, which includes a pilot valve that allows/intercepts a flow of gas directed towards the pilot burner, and a main valve that allows/intercepts a gas flow to the main burner, the valve assembly moveable between a closed OFF state, a PILOT state, and an ON state, where gas flows to the main burner. The control system includes a detection device that generates a state signal, and a control unit including a timer, the control unit is operatively connected to the detection device to receive a state signal and to an actuator to close the valve. The control unit starts the timer when the state signal represents the PILOT state, and actuates the actuator for the pilot valve to close it when the timer reaches a preset limit. 1200. Control system for controlling the pilot flame of a combustible gas device , said gas device () comprising:{'b': '1', 'a pilot burner () for generating a pilot flame,'}{'b': '2', 'a main burner () for generating a main flame, and'}{'b': 300', '3', '1', '1', '4', '2', '2, 'a valve assembly (), comprising a pilot valve () that is arranged upstream of said pilot burner () in order to allow/intercept a flow of gas directed towards said pilot burner (), and a main valve () that is arranged upstream of said main burner () in order to allow/intercept a flow of gas directed towards said main burner (),'}{'b': 300', '3', '3', '4', '2', '3', '4', '2', '100, 'wherein the state of said valve assembly () can be moved between an OFF state, in which said pilot valve () is closed, a PILOT state, in which said pilot valve () is open and said main valve () is disabled to allow a flow of gas to flow towards said main burner (), and an ON state, in which said pilot valve () is open and said main valve () is enabled to allow a flow of gas to flow towards said main burner (), said control system () comprising{'b': 19', '300', '300 ...

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Номер записи: 75
12-09-2019 дата публикации

GAS TAP FOR A GAS BURNER, AND A GAS COOKING APPLIANCE INCORPORATING SAID GAS TAP

Номер: US20190274477A1
Автор: ALAVA PEREZ Isabel, ALBIZURI LANDAZABAL Iñigo, Múgica Odriozola José Ignacio, Querejeta Andueza Félix
Принадлежит:

A gas tap for a gas burner that includes a gas inlet conduit for the entry of gas at a nominal pressure, at least one outlet conduit suitable for conducting gas to the burner through an outlet hole, and a rotating regulating element for regulating the incoming gas flow from the inlet conduit to the outlet conduit. The outlet conduit conducting a variable flow rate gas flow to the outlet hole when the regulating element rotates along an angular path. The gas tap also includes at least one constant flow outlet conduit for conducting a minimum constant flow rate gas flow (Qc) at nominal pressure (Pn) to the burner through a constant flow outlet hole when the regulating element rotates along the angular path. 1. A gas tap for delivery a gas to a gas burner , the gas tap comprising:a valve body;a gas inlet conduit for the entry of gas at a nominal supply pressure into the valve body;a first gas outlet conduit;a second gas outlet conduit; anda rotating regulating element housed in the valve body and disposed in a gas flow path between the gas inlet conduit and each of the first and second gas outlet conduits, the rotating regulating element is rotatable along an angular path and is configured to provide the gas at a plurality of flow rates at a corresponding plurality of pressures to the first gas outlet conduit and to provide the gas at a constant flow rate at the nominal supply pressure to the second gas outlet conduit during a rotation of the rotating regulating element along the angular path.2. The gas tap according to claim 1 , wherein the first outlet conduit includes a first outlet hole configured to direct the gas into the gas burner and the second outlet conduit includes a second outlet hole configured to direct the gas into the gas burner.3. The gas tap according to claim 1 , wherein when the rotating regulating element is rotated along a full range of the angular path claim 1 , the gas flow rate in the first outlet conduit ranges between a zero flow rate and a ...

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Номер записи: 76
12-09-2019 дата публикации

Control System And Method For A Solid Fuel Combustion Appliance

Номер: US20190277499A1
Автор: Masen Mark Geoffrey
Принадлежит: Maxitrol Company

Techniques for controlling a solid fuel combustion appliance, e.g., a wood burning stove, are disclosed. A control system measures an exhaust gas temperature of airflow through an outlet of the solid fuel combustion appliance. The control system determines a derivative of the exhaust gas temperature with respect to time. The derivative of the exhaust gas temperature with respect to time is compared to a predetermined threshold. The control system modulates the inlet damper in response to determining that the derivative of the exhaust gas temperature with respect to time reaches the predetermined threshold. 13-. (canceled)5. The solid fuel combustion appliance of claim 4 , wherein the predetermined threshold is zero or approximately zero.6. The solid fuel combustion appliance of claim 4 , wherein said controller is further configured to determine the derivative in response to determining that no predetermined time is specified to maintain the inlet damper at a predetermined position.7. The solid fuel combustion appliance of claim 4 , further comprising a surface temperature sensor coupled to said controller and being configured to produce measurements of a surface temperature of said housing.8. The solid fuel combustion appliance of claim 4 , further comprising a door operatively connected to said housing and positionable in a closed position to block said opening.10. The solid fuel combustion appliance of claim 9 , further comprising a surface temperature sensor coupled to said controller and being configured to produce measurements of a surface temperature of said housing.11. The solid fuel combustion appliance of claim 9 , further comprising a door operatively connected to said housing and positionable in a closed position to block said opening.13. The solid fuel combustion appliance of claim 12 , further comprising a surface temperature sensor coupled to said controller and being configured to produce measurements of a surface temperature of said housing.14. The ...

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Номер записи: 77
12-09-2019 дата публикации

SYSTEM FOR TURNING OFF STOVE KNOBS, AND COOKTOPS COMPRISING SAME

Номер: US20190277508A1
Автор: Gonzalez Palacio Mauricio, Luna Del Risco Mario Alberto, Tabares Montoya Julian Esteban
Принадлежит:

The present invention relates to an electromechanical system for automating the turning off of the knobs of a stove. The system can quickly identify the occurrence of a gas leak and turn off the knob corresponding to the burner that is leaking. The system is also connected to a user interface, providing real-time information about the status of the burners and allowing the user to turn off the knobs remotely. The system has an improved service life, does not considerably change the aesthetics of the stove and can be designed to fulfil different torque requirements. The invention also relates to cooktops comprising said system. 1. A system for turning off stove knobs comprising:{'b': '2', 'a pinion coupled to a knob shaft ();'}{'b': '4', 'a motor ();'}{'b': '3', 'a pinion coupled motor ();'}{'b': '5', 'a micro switch ();'}temperature measuring instruments for burners of a stove; and{'b': 2', '5', '3', '4', '3', '2', '1', '5, 'a master device in communication with a user interface, wherein a notch of the pinion coupled to the knob shaft () is in contact with the micro switch () and is coupled with the pinion coupled to the motor (), which is in contact with the motor (), so that the motor transmits rotational movement to the pinion coupled to the motor () and to the pinion coupled to the knob shaft (), generating movement of a knob axis (), the micro switch () and the temperature measuring instruments connected to a processor of the master device, and the processor being configured toi) set a value of room temperature as “previous temperature”;ii) measure a temperature in each of the burners using the temperature measurement instruments and assign it as “current temperature”;iii) calculate a difference in absolute value between the “current temperature” and the “previous temperature”;iv) read an opening state of the burners from the micro switch;v) assign the value of “current temperature” to “previous temperature” and repeat steps ii) to iv) until a difference ...

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Номер записи: 78
19-09-2019 дата публикации

Control System For Modulating Water Heater

Номер: US20190285316A1
Автор: Paine John C.
Принадлежит:

A control system is provided for a modulated heating system including a plurality of modulating water heaters, which may be modulating boilers. A deadband control scheme provides for reduced cycling of the modulating heater when total system heat demand falls between the maximum output of one heater and the sum of the maximum output of that one point and the minimum firing point of the next subsequent heater. Condensation of flue gas products is prevented by monitoring flue exhaust temperature for each heater and controlling the modulation of each heater to maintain a minimum heater output sufficiently high to prevent condensation of flue gas products from that heater. Rapid reaction to changes in system heat demand is provided by sensing changes in flow rate in a primary loop of the system and anticipating resulting changes in temperature thus allowing for change in heater output prior to the time the change in flow rate has fully impacted system temperature. 15-. (canceled)6. A water heating system , comprising:a water supply system;a flow meter connected to the water supply system and configured to provide a water flow rate signal corresponding to a water flow rate; a variable output radially outwardly firing elongated burner;', 'a fin tube heat exchanger arranged concentrically about the burner such that water flowing through the heat exchanger receives heat from the burner radiating directly upon exterior fins of the fin tube heat exchanger;', 'a water inlet to the heat exchanger;', 'a water outlet from the heat exchanger;', 'a control valve upstream of the water inlet for controlling flow of water into the water inlet; and', 'a blower including a variable speed drive motor, the blower being configured to provide a variable flow of premixed gas and combustion air to the burner; and, 'a modulating water heater connected to the water supply system for heating water for the water supply system, the modulating water heater being a gas fired water heater including ...

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Номер записи: 79
11-10-2018 дата публикации

PRE-EMPTIVE FAULT DETECTION THROUGH ADVANCED SIGNAL ANALYSIS

Номер: US20180292816A1
Автор: CONCIATORI Michael, WOINOWSKY-KRIEGER Michael, WOO Tommy, Wu Hai Tao
Принадлежит:

Herein provided are methods and systems for detecting failure of a sensor in a control system for a gas turbine engine. A signal is received from the sensor. A high-pass filter is applied to the signal to produce a high-frequency component signal. A rate of occurrence of signal spikes in the high-frequency component signal is determined. The high-frequency component signal is compared to a component signal threshold which is based on at least one known healthy component signal and at least one faulty component signal. The presence of intermittent open circuits caused by the sensor is detected based on the comparing and on the rate of occurrence of signal spikes. 1. A method for detecting failure of a sensor in a control system for a gas turbine engine , comprising:receiving a signal from the sensor;applying a high-pass filter to the signal to produce a high-frequency component signal;determining a rate of occurrence of signal spikes in the high-frequency component signal;comparing the high-frequency component signal to a component signal threshold, wherein the component signal threshold is based on at least one known healthy component signal and at least one faulty component signal; anddetecting the presence of intermittent open circuits caused by the sensor based on the comparing and on the rate of occurrence of signal spikes.2. The method of claim 1 , further comprising assigning a sensor health value to the sensor based on a rate of occurrence of the intermittent open circuits.3. The method of claim 2 , further comprising applying a signal accommodation factor to the signal based on the sensor health value.4. The method of claim 1 , wherein comparing the high-frequency component signal to the component signal threshold comprises comparing an amplitude of the high-frequency component signal to an amplitude threshold.5. The method of claim 1 , wherein comparing the high-frequency component signal to the component signal threshold comprises comparing a timing ...

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Номер записи: 80
19-10-2017 дата публикации

Gas turbine with sequential combustion arrangement

Номер: US20170298837A1
Автор: Adnan Eroglu, Juergen Hoffmann
Принадлежит: ANSALDO ENERGIA SWITZERLAND AG

The present disclosure refers to a method for operating a gas turbine with sequential combustors having a first-burner, a first combustion chamber, and a second combustor arranged sequentially in a fluid flow connection. To minimize emissions and combustion stability problems during transient changes when the fuel flow to a second combustor is initiated the method includes the steps of increasing the second fuel flow to a minimum flow, and reducing the first fuel flow to the first-burner of the same sequential combustor and/or the fuel flow to at least one other sequential combustor of the sequential combustor arrangement in order keep the total fuel mass flow to the gas turbine substantially constant. Besides the method a gas turbine with a fuel distribution system configured to carry out such a method is disclosed.

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Номер записи: 81
19-10-2017 дата публикации

SYSTEM FOR BOILER CONTROL

Номер: US20170299178A1
Автор: Haugstetter Christoph
Принадлежит:

A system for boiler control is provided. The system includes supply units to provide supplies of combustion materials for combustion thereof, a vessel coupled to the supply units in which the combustion materials are combusted, a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein and a control unit. The control unit is coupled to the supply units and the sensor and configured to issue a main servo command and a pulse servo command to one or more of the supply units to control operations of the one or more supply units in accordance with the sensed quantity of the exhaust CO. 1. A system for boiler control , comprising:supply units to provide supplies of combustion materials for combustion thereof;a vessel coupled to the supply units in which the combustion materials are combusted;a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein; anda control unit coupled to the supply units and the sensor, the control unit being configured to issue to one or more of the supply units in accordance with the sensed quantity of the exhaust CO:a main servo command for providing baseline amounts of the combustion materials for combustion thereof for baseline amounts of time, anda pulse servo command to increase the amount of the combustion materials provided for combustion thereof beyond the baseline amounts for short times that are shorter than the baseline amounts of time.2. The system according to claim 1 , wherein the main servo command is variable over time and the pulse servo command is variable over time and issued periodically.3. The system according to claim 1 , wherein the control unit ceases issuance of the pulse servo command in accordance with the sensed quantity of the exhaust CO.4. The boiler apparatus according to claim 1 , wherein the control unit comprises:an ...

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Номер записи: 82
24-09-2020 дата публикации

DIGITAL GAS VALVE BURNER CONTROL SYSTEMS AND METHODS

Номер: US20200300507A1
Автор: Cowan Richard W., Trice Daniel J.
Принадлежит:

A system for controlling digital gas valves of an appliance utilizing a configurable duty cycle responsive to time, temperature and burner power level variables. 1. A system for controlling the flow of a gas from a gas supply to at least one burner of an appliance comprising:a processor and concomitant data memory, said processor having a plurality of inputs and outputs for receiving and providing electrical signals to a plurality of electrical components of said appliance;a user interface operatively coupled to said processor, said user interface having an access control selection for selectively extending and retracting said plurality of control knobs;a gas valve in fluid communication with said at least one burner having an actuator that accepts an output from said processor representative of valve position to control the supply of gas to said burner;at least one control knob assigned to said burner having an output representative of a heat level of said burner operatively coupled to an input of said processor; andwhereby said gas valve is cycled on and off by providing an output from said processor to said valve actuator determined by a configurable duty cycle.2. The system of wherein said duty cycle comprises:a configurable cycle period and a configurable ON time during said cycle period, said cycle period and ON time selected using said user interface.3. The system of wherein said cycle period ON time is provided to said processor by operation of said at least one control knob.4. The system of wherein said duty cycle comprises:a configurable cycle period, a configurable ON time during said cycle period, and a configurable burner power level, each selected using said user interface.5. The system of wherein said burner power level is provided to said processor by operation of said at least one control knob.6. The system of wherein said burner power level is representative of a percentage of gas flow to said burner.7. The system of wherein said duty cycle ...

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Номер записи: 83
19-11-2015 дата публикации

Systems and methods for controlling gas powered appliances

Номер: US20150330663A1
Автор: Arensmeier Jeffrey N., Buescher Thomas P., FURMANEK Daniel L.
Принадлежит:

A safety system for use with a thermoelectric generator is described. The safety system includes a safety switch operatively connected to the thermoelectric generator output. The safety switch has a first state in which the thermoelectric generator can provide a first voltage to a load, and a second state in which the thermoelectric generator cannot output the first voltage to the load and in which the thermoelectric generator can output a second voltage to the load. The second voltage is a non-zero voltage having a magnitude less than the first voltage.

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Номер записи: 84
19-11-2015 дата публикации

Systems and methods for controlling gas powered appliances

Номер: US20150330665A1
Автор: Arensmeier Jeffrey N., Buescher Thomas P., FURMANEK Daniel L.
Принадлежит:

A control system for controlling a gas powered water heater includes a power system to provide electrical power, a valve control system to selectively hold a main gas valve in an open position, a valve pick system to selectively pick the main gas valve from a closed position to the open position, a safety system to prevent the valve control system from holding the main gas valve in the open position, and a controller. The controller is electrically powered by the power system and communicatively coupled to the valve control system, the valve pick system, and the safety system. The controller is configured to control operation of the main burner and the main gas valve using the valve control system, the valve pick system, and the safety system to provide water heated to substantially a setpoint temperature.

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Номер записи: 85
10-10-2019 дата публикации

Gas Cooking Appliance

Номер: US20190309954A1
Автор: ARRIOLA-BENGOA UNZUETA Imanol, AYASTUY ARETXAGA Iñaki, Múgica Odriozola José Ignacio, PEÑAGARICANO BADIOLA Iñigo, Querejeta Andueza Félix
Принадлежит:

According to one embodiment a gas cooking appliance is provided that includes at least one burner and a manual regulating valve for each burner. The manual regulating valve includes a manual actuator movable in a range of actuation (A) to vary a gas flow rate (Q) therethrough. At least one electromagnetic valve fluidly communicates the manual regulating valve and the burner. A control unit controls the electromagnetic valve. At least one temperature sensor is electrically connected to the control unit to measure a temperature related to a cooking process. A cooking program selector is electrically connected to the control unit and mechanically coupled to the manual actuator, such that each cooking program is associated with a gas flow rate, the program selector including at least one cooking program with temperature regulation. 1. A gas cooking appliance comprising:a gas burner;a manual regulating valve having a gas outlet in fluid communication with the gas burner, the manual regulating valve configured to vary a gas flow reaching the gas burner, the manual regulating valve including a manual actuator movable in a range of actuation, when a gas is supplied to the manual regulating valve a gas flow rate through the valve is changed when the manual actuator is moved in the range of actuation;a first electromagnetic gas valve of the ON-OFF type located in a gas flow path between the gas outlet of the manual regulating valve and the gas burner, when the first electromagnetic gas valve is in an ON position the first electromagnetic gas valve is in an open position communicating the gas outlet of the manual regulating valve with the gas burner, when the first electromagnetic gas valve is in an OFF position the first electromagnetic gas valve is in a closed position preventing or restricting fluid communication between the gas outlet of the manual regulating valve and the gas burner;a control unit that is configured to control the first electromagnetic gas valve to cause ...

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Номер записи: 86
08-11-2018 дата публикации

REGULATING VALVE FOR A GAS COOKING APPLIANCE AND GAS COOKING APPLIANCE INCORPORTATING SAID REGULATING VALVE

Номер: US20180320794A1
Автор: Querejeta Andueza Félix
Принадлежит:

Regulating valve for a gas cooking appliance, comprising a valve body with an inlet conduit and at least one outlet conduit, and a rotating disc arranged between the inlet conduit and the outlet conduit, comprising a plurality of connecting holes for regulating the gas flow, more than one connecting hole overlapping with an outlet hole of the outlet conduit, and the rotating disc comprising a main series of connecting holes increasing in size in the direction of increasing gas flow. There is an intercalated hole between successive holes of the main series and after each hole of the main series, the size of each intercalated hole being smaller than the size of the preceding contiguous hole of the main series. 1. A regulating valve for a gas cooking appliance , the regulating valve comprising:a valve body with an inlet conduit through which gas is supplied, an outlet conduit and an inner cavity in fluid communication with the inlet conduit, the valve body including an internal through hole that fluidly communicates the inner cavity with the outlet conduit:a rotating disc arranged in the inner cavity of the valve body, the rotating disc including a first plurality of connecting holes arranged in an angular path and configured to regulate a plurality of intermediate gas flow rates through the regulating valve, the rotating disc rotatable between a plurality of angular positions corresponding to the plurality of intermediates flow rates to cause a positioning of at least three of the first plurality of connecting holes to overlap with the inner through hole of the valve body to regulate the plurality of intermediate gas flow rates between the inner cavity and the outlet conduit, the first plurality of connecting holes including a main series of connecting holes consecutively arranged in order of increasing size along the angular path in a direction corresponding to an increase in gas flow, the first plurality of connecting holes further including a plurality of first ...

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Номер записи: 87
08-11-2018 дата публикации

REGULATING VALVE FOR A GAS COOKING APPLIANCE AND GAS COOKING APPLIANCE INCORPORTATING SAID REGULATING VALVE

Номер: US20180320795A1
Автор: ARRIOLA-BENGOA UNZUETA Imanol, Querejeta Andueza Félix
Принадлежит:

Regulating valve for a gas cooking appliance according to one embodiment includes a valve body with an inlet conduit, at least one outlet conduit and an inner cavity in fluid communication with the inlet conduit. The regulating valve also includes a rotating disc in contact with a wall of the valve body that partially defines the inner cavity. The rotating disc includes at least one connecting opening for regulating the gas flow between the inner cavity and the outlet conduit by means of rotation. Operating means is connected to the rotating disc for rotating it. The regulating valve is adapted for supplying different types of combustible gas, the rotating disc being arranged in a different angular position, depending on the type of gas to be supplied, when the operating means is arranged in a reference position. 1. A gas regulating valve capable of regulating a flow of a first gas and a flow of a second gas , the gas regulating valve comprising:a valve body having an inlet conduit through which gas is supplied, a first outlet conduit and an inner cavity in fluid communication with the inlet conduit, the valve body including a first internal through hole that fluidly communicates the inner cavity with the first outlet conduit;a rotating disc including a first plurality of connecting holes of different sizes arranged in a first angular path, the rotating disc rotatable in the inner cavity to cause an overlap of at least one or more of the first plurality of connecting holes with the first inner through hole of the valve body to cause the inner cavity to be in fluid communication with the first outlet conduit to regulate the flow of the first gas or to regulate the flow of the second gas, the rotating disc having a surface in contact with a surface of the valve body that at least partially demarcates the inner cavity and rotatable with respect to the surface of the valve body, a leak-tight seal existing between the surface of the rotating disc and the surface of the ...

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Номер записи: 88
16-11-2017 дата публикации

METHOD AND DEVICE FOR COMBUSTION WITH PULSED FUEL SPLIT

Номер: US20170328284A1
Автор: Brickwood Gavin, Bulat Ghenadie
Принадлежит:

A method of operating a control unit for controlling at least two different input fuel flows to a combustion device, e.g. a gas turbine includes the step of determining on the basis of at least one operating parameter whether the combustion device is in a predefined operating stage. In response hereto, generating a control signal configured for setting a ratio of at least two different input fuel flows to a predetermined value (psc psc) for a predetermined time (dt) in case the combustion device is in the predefined operating stage. 1. A method for operating a control unit for controlling at least two different input fuel flows to a combustion device , comprising:receiving at least one operating parameter through a control input of the control unit;determining whether the combustion device is operated in a predefined operating stage based on the at least one operating parameter; andgenerating a control signal for setting a ratio of the at least two different input fuel flows to a predetermined value for a predetermined time in case the combustion device is in the predefined operating stage,wherein the ratio of the at least two different input fuel flows is set to the predetermined value by changing the ratio of the at least two different input fuel flows from a present value to the predetermined value in a stepwise manner, andwherein the ratio of the at least two different input fuel flows is set to the predetermined value for the predetermined time comprising a pulse shaped temporal change of the ratio of the at least two different input fuel flows.2. The method according to claim 1 , wherein after the predetermined time the ratio of the at least two different input fuel flows is set to a value that corresponds to a control regime applied before setting the ratio of the at least two different input fuel flows to the predetermined value.3. The method according to claim 1 , wherein the at least two different input fuel flows include:a main fuel flow to a main ...

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Номер записи: 89
03-12-2015 дата публикации

Flame Sensing System

Номер: US20150348393A1
Автор: Margolin Jed
Принадлежит:

This invention relates to the field of sensing flames in equipment using a combustion burner such as gas furnaces by using the electrical properties of flames. In a first group of embodiments flame rectification is used to cause distortion of a signal having a selected waveform. A harmonic of the distorted waveform is detected thereby providing flame proof. In a second group of embodiments flame rectification is used as a mixer to cause two signals having selected waveforms to produce sum and difference signals. The sum and/or difference signals are detected thereby providing flame proof. 2. The system of whereby said signal source having a selected waveform is selected from a group consisting of an approximately symmetrical square wave and a low distortion sine wave.3. The system of whereby said harmonic signal detector comprises a phase locked loop tuned to the frequency of said harmonic signal.4. The system of further comprising a master clock configured to produce said signal having a selected waveform and a reference signal having the same frequency as said harmonic signal claim 1 , and said harmonic signal detector comprises a simple synchronous detector comprising:a. a multiplier having a first input connected to the output of said high impedance buffer and a second input connected to said reference signal;b. a threshold detector having an input connected to the output of said multiplier, and which is configured to produce an output when a selected threshold is exceeded.5. The system of further comprising a master clock configured to produce said signal having a selected waveform claim 1 , a first reference signal having the same frequency as said harmonic signal claim 1 , and a second reference signal having the same frequency as said first reference signal but is approximately 90 degrees out of phase with said first reference signal claim 1 , and said harmonic signal detector comprises a quadrature synchronous detector comprising:a. a first multiplier ...

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Номер записи: 90
24-10-2019 дата публикации

TORCH WITH INTEGRAL FLASHBACK ARRESTOR AND THERMAL SHUT-OFF DEVICE

Номер: US20190323709A1
Автор: Nguyen Nhyanh Duyet
Принадлежит:

A torch with integral flashback arrestor and thermal shut-off device is provided. In one approach, a torch body includes a passageway of the torch body, and a cartridge assembly disposed within the passageway. The cartridge assembly may include at least one of: a resettable pressure-sensitive device, and a thermal shut-off device, wherein the pressure-sensitive device and the thermal shut-off device are modifiable from a first configuration to a second configuration in response to a pressure or temperature gradient in the torch body, and wherein the second configuration restricts flow through the passageway. The cartridge may further include a check valve disposed along the passageway, for example, within a bore of a bushing, or within a retainer coupled to the torch body at an inlet of the passageway. 1. A torch body comprising:a passageway; and at least one of: a resettable pressure-sensitive device, and a thermal shut-off device, wherein the resettable pressure-sensitive device and the thermal shut-off device are modifiable from a first configuration to a second configuration in response to a pressure or temperature gradient in the torch body, and wherein the second configuration restricts flow of a gas through the passageway;', 'a bushing operable with at least one of: the pressure-sensitive device and the thermal shut-off device; and', 'a check valve positioned along the passageway of the torch body, the check valve operable with at least one of: the resettable pressure-sensitive device or the thermal shut-off device., 'a cartridge assembly disposed within the passageway, the cartridge assembly comprising2. The torch body of claim 1 , wherein the bushing is a sintered filter press fitted within a bore of the cartridge assembly.3. The torch body of claim 1 , the thermal shut-off device comprising:a guide received within an internal bore of a bushing;a stem positioned within an internal area of the guide; andan adaptor separated from the stem by a thermal ...

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Номер записи: 91
10-12-2015 дата публикации

PROVIDING APPLIANCES WITH GAS QUALITY INFORMATION

Номер: US20150355119A1
Автор: Kucera David, TAYLOR Curtis
Принадлежит:

Methods and systems for providing appliances with gas quality information are described herein. One system includes a single calorimeter or a single gas chromatograph configured to determine a calorific value of a gas being supplied to an area having a plurality of appliances and communicate the calorific value of the gas to the plurality of appliances. 1. A system for providing appliances with gas quality information , comprising: determine a calorific value of a gas being supplied to an area having a plurality of appliances; and', 'communicate the calorific value of the gas to the plurality of appliances., 'a single calorimeter or a single gas chromatograph configured to2. The system of claim 1 , wherein the single calorimeter or single gas chromatograph is located at or adjacent an entry point of the area.3. The system of claim 1 , wherein the plurality of appliances are configured to adjust their respective air-fuel or oxygen-fuel ratios based claim 1 , at least in part claim 1 , on the calorific value of the gas.4. The system of claim 1 , wherein the single calorimeter or single gas chromatograph is configured to directly communicate the calorific value of the gas to the plurality of appliances.5. The system of claim 1 , wherein the single calorimeter or single gas chromatograph is configured to communicate the calorific value of the gas to the plurality of appliances through a web server.6. The system of claim 1 , wherein the single calorimeter or single gas chromatograph is configured to:periodically determine the calorific value of the gas; andcommunicate the calorific value of the gas to the plurality of appliances after each periodic determination.7. The system of claim 1 , wherein the single calorimeter or single gas chromatograph is configured to communicate a time the calorific value of the gas is determined to the plurality of appliances.8. A method for providing appliances with gas quality information claim 1 , comprising:determining, by a single ...

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Номер записи: 92
22-10-2020 дата публикации

ENGINE WIRELESS SENSOR SYSTEM WITH ENERGY HARVESTING

Номер: US20200333004A1
Автор: Adamski Paul A., Scheid Paul Raymond, Warren Eli Cole
Принадлежит:

A wireless sensor system of a gas turbine engine of an aircraft can include a plurality of wireless sensors distributed within an engine core of the gas turbine engine and an energy harvesting system including one or more energy harvesting devices configured to convert mechanical or thermal energy within the gas turbine engine into electric power and provide the electric power to the wireless sensors. The wireless sensor system can also include a data concentrator coupled to the gas turbine engine. The data concentrator can be configured to receive a plurality of wireless sensor data from the wireless sensors and transmit the wireless sensor data to a communication adapter of the gas turbine engine. 1. A wireless sensor system of a gas turbine engine of an aircraft , the wireless sensor system comprising:a plurality of wireless sensors distributed within an engine core of the gas turbine engine;an energy harvesting system comprising one or more energy harvesting devices configured to convert mechanical or thermal energy within the gas turbine engine into electric power and provide the electric power to the wireless sensors; anda data concentrator coupled to the gas turbine engine, the data concentrator configured to receive a plurality of wireless sensor data from the wireless sensors and transmit the wireless sensor data to a communication adapter of the gas turbine engine.2. The wireless sensor system of claim 1 , wherein the data concentrator is powered by one or more of the energy harvesting devices.3. The wireless sensor system of claim 1 , wherein the data concentrator comprises:a first antenna within the engine core, the first antenna configured to communicate wirelessly with the wireless sensors; anda second antenna external to the engine core, the second antenna configured to communicate wirelessly with the communication adapter in an engine fan stream of the gas turbine engine.4. The wireless sensor system of claim 3 , wherein the data concentrator is ...

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Номер записи: 93
07-12-2017 дата публикации

FIXATION SYSTEM FOR GAS VALVES

Номер: US20170350601A1
Автор: BANZATO Massimo, Beghi Maurizio, Lando Giuseppe, Salazar Oscar Alberto
Принадлежит: Electrolux Appliances Aktiebolag

Gas circuit () for a kitchen appliance () comprising a gas rail () with a gas inlet () for connecting said gas rail () to a gas source () and with at least one gas outlet (), said gas circuit () further comprising a gas tube () for providing gas from said gas outlet () to a gas hob (), and said gas circuit () further comprising a gas valve assembly () connecting said gas tube () to said gas outlet () of said gas rail () in a flow conducting manner, said gas valve assembly () comprising a gas valve () with a valve body () and fixation means () fixing said valve body () to said gas rail () such that said gas valve () is supported by said gas rail (), characterized in that said fixation means () comprise a first spring member () looping around said gas rail () and/or said valve body (), thereby resiliently bracing said gas valve () and said gas rail (). 1. Gas circuit for a kitchen appliance comprising a gas rail with a gas inlet for connecting said gas rail to a gas source and with at least one gas outlet , said gas circuit further comprising a gas tube for providing gas from said gas outlet to a gas hob , and said gas circuit further comprising a gas valve assembly connecting said gas tube to said gas outlet of said gas rail in a flow conducting manner , said gas valve assembly comprising a gas valve with a valve body and fixation means fixing said valve body to said gas rail such that said gas valve is supported by said gas rail , wherein said fixation means comprise a first spring member looping around said gas rail and/or said valve body , thereby resiliently bracing said gas valve and said gas rail.2. The gas circuit according to claim 1 , wherein said gas outlet of said gas rail is an opening of said gas rail claim 1 , wherein said gas valve comprises an inlet duct claim 1 , said inlet duct being at least partially inserted into and/or sealed to said opening.3. The gas circuit according to claim 1 , wherein said first spring member comprises attachment means at ...

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Номер записи: 94
07-11-2019 дата публикации

AIR HEATER

Номер: US20190338950A1
Автор: Aaron Matthew T., CHAI Wen Jie, MARINO Ryan J., Willey Brent M., YIN Guo Hong
Принадлежит:

A liquid fuel air heater comprises a housing defining a motor housing portion and a grip portion extending from the motor housing portion. An electric motor is positioned in the motor housing portion. A combustion chamber is at least partially positioned within the motor housing portion. A fan is driven by the motor when activated for generating an axial airflow through the combustion chamber. A battery pack containing a plurality of battery cells connected to each other in a series or parallel arrangement is removably coupled to the grip portion of the housing for supplying power to the motor. 1. A liquid fuel air heater comprising:a housing defining a motor housing portion and a grip portion extending from the motor housing portion;an electric motor positioned in the motor housing portion; a fan driven by the motor when activated for generating an axial airflow through the combustion chamber; and', 'a battery pack containing a plurality of battery cells connected to each other in a series or parallel arrangement, the battery pack being removably coupled to the grip portion of the housing for supplying power to the motor., 'a combustion chamber at least partially positioned within the motor housing portion;'}2. The liquid fuel air heater of claim 1 , further comprising a liquid fuel container for providing liquid fuel to the combustion chamber.3. The liquid fuel air heater of claim 2 , further comprising a control valve to alternatively permit or prevent the flow of liquid fuel from the liquid fuel container to the combustion chamber.4. The liquid fuel air heater of claim 3 , wherein the control valve is a solenoid actuated valve.5. The liquid fuel air heater of claim 3 , further comprising an ignitor configured to ignite liquid fuel in the combustion chamber.6. The liquid fuel air heater of claim 5 , further comprising an actuator moveable between a first position in which the motor is off and the control valve is closed and a second position claim 5 , wherein the ...

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Номер записи: 95
07-11-2019 дата публикации

GAS APPLIANCE AND CONTROL METHOD THEREOF

Номер: US20190338956A1
Автор: Huang Chin-Ying, HUANG CHUNG-CHIN, Huang Hsin-Ming, Huang Hsing-Hsiung, YEH YEN-JEN
Принадлежит: GRAND MATE CO., LTD.

A gas appliance includes a burner, a gas valve, an igniter, a thermocouple, and a control device. The control device is adapted to execute a control method comprising the following steps: controlling the igniter to ignite and controlling the gas valve to open; receiving a detected voltage output from the thermocouple; controlling the igniter to stop igniting and keeping the gas valve open when the detected voltage reaches a first voltage value; receiving the detected voltage output from the thermocouple continuously, and controlling the gas valve to close the gas pipe when the detected voltage above a second voltage falls below the second voltage. The second voltage value is higher than the first voltage value. As such, an ignition procedure may be speeded up and the supply of the fuel gas may be interrupted more quickly when the flame is extinguished. 1. A control method for a gas appliance , wherein the gas appliance includes a burner , a gas valve , an igniter , and a thermocouple; the burner includes at least one flame port; the gas valve is installed on a gas pipe communicating with the burner and is controlled to open or close the gas pipe; the igniter is adjacent to the at least one flame port of the burner and is controlled to ignite a fuel gas flowing out of the at least one flame port; and the thermocouple is adjacent to the burner , is adapted to detect a flame , and generates a detected voltage with respect to a detection period of time; comprising the following steps:A. controlling the igniter to ignite and controlling the gas valve to open;B. receiving the detected voltage generated by the thermocouple;C. controlling the igniter to stop igniting and keeping the gas valve open when the detected voltage reaches a first voltage value; andD. receiving the detected voltage from the thermocouple continuously; and controlling the gas valve to close the gas pipe when the detected voltage above a second voltage value falls below the second voltage value, ...

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Номер записи: 96
07-11-2019 дата публикации

METHOD AND SYSTEM FOR CONTROLLING AN INTERMITTENT PILOT WATER HEATER SYSTEM

Номер: US20190338987A1
Автор: Hazzard Frederick, Myre Adam, YOUNG GREGORY
Принадлежит:

A water heater may include a water tank, a burner, a pilot for igniting the burner, an ignitor for igniting the pilot, a thermoelectric device in thermal communication with a flame of the pilot, a controller for controlling an ignition sequence of the pilot using the ignitor, and a rechargeable power storage device for supplying power to the ignitor and the controller. The rechargeable power storage device may be rechargeable using the energy produced by the thermoelectric device. The controller is configured to selectively run only the pilot for at least part of a heating cycle to increase the recharge time of the rechargeable power storage device while still heating the water in the water heater. 1. A method for controlling a water heater , the water heater including a water tank , a burner , a pilot for igniting the burner , an ignitor for igniting the pilot , a thermoelectric device in thermal communication with a flame of the pilot , a controller , and a rechargeable power storage device for supplying power to the ignitor and the controller , the rechargeable power storage device is rechargeable using energy produced by the thermoelectric device , the method comprising: running the pilot and the burner to heat the water in the water tank when the temperature of the water in the water tank falls to a lower temperature setpoint threshold;', 'not running the pilot or the burner when the temperature of the water in the water tank rises to an upper temperature setpoint threshold;, 'when the rechargeable power storage device is detected to have a charge that has not fallen below a charge threshold 'when the temperature of the water in the water tank is at or above the lower temperature setpoint threshold and below the upper temperature setpoint threshold, running the pilot but not the burner to heat the water in the water tank for a first heating segment toward the upper temperature setpoint threshold, and running the pilot and the burner to heat the water in the ...

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Номер записи: 97
06-12-2018 дата публикации

GAS TURBINE COMBUSTOR DIAGNOSTIC SYSTEM AND METHOD

Номер: US20180347473A1
Автор: White Eugene Delano
Принадлежит:

In an embodiment, a method includes performing a turbine combustor diagnostic routine including operating a first turbine combustor of a plurality of turbine combustors at a substantially steady state of combustion; adjusting an operational parameter of the first turbine combustor to cause a change in combustion products produced by the first turbine combustor; identifying a first sensor response of a first subset of a plurality of sensors disposed within or downstream from a turbine fluidly coupled to the turbine combustor, the first sensor response being indicative of the change in the combustion products, and wherein the first subset comprises one or more first sensors; correlating the first subset of sensors with the first turbine combustor; and diagnosing a condition of the first subset of the plurality of sensors, the first turbine combustor, or a combination thereof, based on the first sensor response. 1. A gas turbine system , comprising:a plurality of turbine combustors, wherein each turbine combustor of the plurality of turbine combustors is configured to combust a fuel/oxidant mixture to produce combustion products;a turbine driven by the combustion products produced by the plurality of turbine combustors;a plurality of sensors positioned downstream of the plurality of turbine combustors, wherein the plurality of sensors is configured to monitor one or more parameters of the combustion products; and determining that the plurality of turbine combustors is operating at steady state;', 'adjusting an operational parameter of a first turbine combustor of the plurality of turbine combustors to cause a change in the combustion products produced by the first turbine combustor;', 'identifying a respective sensor response of a first sensor of the plurality of sensors that detects the change in the combustion products;', 'correlating the respective sensor response with the first turbine combustor; and', 'monitoring feedback from the first sensor to determine a ...

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Номер записи: 98
06-12-2018 дата публикации

SONICATION-ASSISTED FUEL DEOXYGENATION

Номер: US20180347517A1
Автор: Cordatos Haralambos, Staroselsky Alexander
Принадлежит:

A fuel deoxygenation system has a deoxygenator, an ultrasound transducer, and a control. The ultrasonic transducer is operable to direct ultrasonic waves into a flow passage for a fuel connected to the deoxygenator. A gas turbine engine and a method are also disclosed. 1. A dissolved oxygen removal system comprising:a deoxygenator; andan ultrasound transducer and a control, said ultrasonic transducer being operable to direct ultrasonic waves into a flow passage for a fuel connected to said deoxygenator.2. The system as set forth in claim 1 , wherein said deoxygenator includes a membrane that allows dissolved oxygen to pass for removal from the deoxygenator.3. The system as set forth in claim 1 , wherein a control for said transducer periodically creates bursts of ultrasonic waves and then stops the ultrasonic waves for a break period.4. The system as set forth in claim 3 , wherein the bursts of ultrasonic waves occur for between 10 and 20 seconds.5. The system as set forth in claim 4 , wherein the break occurs for less than or equal to 1 second.6. The system as set forth in claim 5 , wherein a fuel pump drives fuel through a flow portion associated with said transducer claim 5 , and said bursts and said breaks are timed to optimize oxygen removal.7. The system as set forth in claim 1 , wherein a second oxygen removal system is positioned downstream of said deoxygenator.8. A gas turbine engine fuel supply system comprising:a gas turbine engine and a fuel pump delivering fuel into a combustor on said gas turbine engine;a deoxygenator; andan ultrasound transducer and a control, said ultrasonic transducer being operable to direct ultrasonic waves into a flow passage for a fuel connected to said deoxygenator.9. The gas turbine engine fuel supply system as set forth in claim 8 , wherein said deoxygenator includes a membrane that allows oxygen to pass for removal from the deoxygenator.10. The gas turbine engine fuel supply system as set forth in claim 8 , wherein a control ...

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Номер записи: 99
21-12-2017 дата публикации

Stove

Номер: US20170363325A1
Автор: DIURLIN Nils, KLARINSSON Carl Marcus Andreas
Принадлежит:

A stove for indoor use includes a housing having a bottom wall, a top wall and one or more side walls defining a combustion chamber adapted to retain a fire, and an air supply system for supplying air to the combustion chamber. The air supply system includes a primary air conduit for supplying air to the combustion chamber from below through the bottom wall and a secondary air conduit for supplying air to the combustion chamber from above. A valve is arranged in the primary air conduit or in a branching between the primary and secondary air conduits. The valve is controlled by a bimetal whereby the valve is in a maximum open position when the prevailing temperature is below a first predetermined temperature during start-up of a fire and in a maximum closed position when the prevailing temperature is above a second predetermined temperature after start-up of the fire. 1. A stove adapted for indoor use , the stove comprisinga housing having a bottom wall, a top wall and one or more side walls defining a combustion chamber adapted to retain a fire,an air supply system for supplying air to the combustion chamber, the air supply system comprising{'b': '40', 'a primary air conduit for supplying air to the combustion chamber () from below through the bottom wall,'}a secondary air conduit for supplying air to the combustion chamber from above,wherein the primary and secondary air conduits are connected to a common inlet,wherein the air supply system further comprisesa valve arranged in the primary air conduit or in a branching between the primary and secondary air conduits,wherein the valve is controlled by a bimetal which is affected by prevailing temperature in the stove, wherein the bimetal controls the valve such that the valve isin a maximum open position when the prevailing temperature is below a first predetermined temperature during start-up of a fire andin a maximum closed position when the prevailing temperature is above a second predetermined temperature after ...

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Номер записи: 100