EP0488969A2 - Luft-Brennstoff-Verhältnissteuervorrichtung für Wärmeerzeuger, insbesondere für häusliche Anlagen - Google Patents

Luft-Brennstoff-Verhältnissteuervorrichtung für Wärmeerzeuger, insbesondere für häusliche Anlagen Download PDF

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Publication number
EP0488969A2
EP0488969A2 EP91830521A EP91830521A EP0488969A2 EP 0488969 A2 EP0488969 A2 EP 0488969A2 EP 91830521 A EP91830521 A EP 91830521A EP 91830521 A EP91830521 A EP 91830521A EP 0488969 A2 EP0488969 A2 EP 0488969A2
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EP
European Patent Office
Prior art keywords
flowrate
fuel
comburant
air
electronic member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP91830521A
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English (en)
French (fr)
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EP0488969A3 (en
Inventor
Federico Verse'
Lorenzo Seno
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JACOROSSI SpA
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JACOROSSI SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JACOROSSI SpA filed Critical JACOROSSI SpA
Publication of EP0488969A2 publication Critical patent/EP0488969A2/de
Publication of EP0488969A3 publication Critical patent/EP0488969A3/en
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N5/184—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/181—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F23N2005/185—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel using detectors sensitive to rate of flow of fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F23N2225/06—Measuring pressure for determining flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/10—Measuring temperature stack temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/13—Measuring temperature outdoor temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/20—Warning devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—Systems for controlling combustion using detectors sensitive to rate of flow of air or fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/26—Details

Definitions

  • This invention relates to a device for controlling the fuel/comburant ratio in heat generators, in particular for civil plants.
  • this invention relates to a device of the type mentioned above, which is capable of keeping constant under certain conditions the fuel/comburant ratio in gas oil plants, or in fuel oil and gas plants, so increasing the energic efficiency of the plant and reducing the amount of polluting matter discharged into the atmosphere.
  • This process is realized by the burner that has the task of introducing the liquid fuel into the combustion chamber in the form of very fine droplets which, heated up by the flame itself, evaporate.
  • the complex molecules of the vapourized fuel have a tendency to split into simpler and hence lighter molecules, so giving rise to ignition, or to the combination of hydrogen and carbon with the oxygen which is present in the comburant air.
  • Combustion air is supplied partly as primary air at the base portion of the flame, and partly as secondary air around the same, by means of an electric fan.
  • the calibration of the comburant air flowrate which is necessary for setting forth the correct value of excess air is obtained by acting on a suitable control gate.
  • the characteristics of the fuel sources are always kept under control so that the contribution to the combustion process can always be foreseen, whereas in the case of the comburant the things are just a different way.
  • the total effective comburant power of air depends on its density (i.e. on the mass per unit volume) and this amount is quite remarkably variable according to the atmosphere pressure and temperature conditions, both temperature and pressure of the atmosphere being foreseeable just within their seasonal variation range but not as regards their momentary values.
  • Figure 1 shows the behaviour of air density curves as a function of temperature and pressure, with respect to the nominal value (1.2 kg/m3 at 1,013 mbar and 20°C).
  • Such systems consist in the adjustment of the fuel or comburant flowrate by different means, acting on the basis of information supplied by sensor means which analyse combustion smokes, as for instance O2, CO, CO2 analysers, of the smoke temperature, which are able to detect the necessary information for calculating the efficiency of combustion.
  • sensor means which analyse combustion smokes, as for instance O2, CO, CO2 analysers, of the smoke temperature, which are able to detect the necessary information for calculating the efficiency of combustion.
  • the calculation is substantially carried out of combustion efficiency as well as of flowrate adjustment according to a strategy of the search for optimal values.
  • the well known systems adopt devices that autonomously provide for optimization of combustion efficiency according to more or less efficient automatic strategies.
  • compensation is obtained of almost whole perturbatrice phenomena of the optimal combustion ratio, as for instance human errors in calibrating the combustion ratio, the shift effects due to soiling of stacks and flues and chimneys, changes in the comburant oxygen percentage in atmospheric air, ovalization of nozzles, with consequent changes in fuel flowrate, the slow and/or fluctuation drifts of feeding pressures of fuel, with consequent changes in the flowrate of the fuel itself, changes in atmospheric pressure and temperature and changes in the climate and weather conditions, with consequent changes in the comburant flowrate and the efficiency drifts and/or changes of transduction mechanical members for motion (electric motors), or in voltages of frequencies of electric supplies, with consequent changes in pump and blower heads and the relative fuel and/or comburant flowrate changes.
  • the device according to this invention is based in practice on the adjustment of the fule/comburant ratio by keeping it constant in time and at a value corresponding to that which is obtained through the manual adjustment at the moment when the burner is started.
  • the device according to this invention allows the dispersion of the comburant/fuel ratio values within an error range of ⁇ 1 % of the optimal value.
  • a device for controlling the fuel/comburant ratio in heat generators comprising a first fuel flowrate sensor which is sensitive to the mass flowrate and is capable of transducing the presence/absence of network at the terminals of the fuel flowrate control means into an ON/OFF electric signal, a second comburant flowrate sensor which is sensitive to the mass flowrate, an electronic transduction, adjustment and actuation member which is capable of determining the operation of the apparatus on the basis of the values set forth when starting the operation as well as of the signals that arrive from the two sensors, and a motorized adjustment means which, when commanded by an lectric pulse sent by said electronic member, opens or closes the opening for the passage for the comburant air so as to keep the fule/comburant ratio constant.
  • Said transduction, adjustment and actuation electronic member will comprise, according to a preferred embodiment of the device of this invention, at least a display, a plurality of precision adjustment members, a plurality of push buttons, a plurality of light indicators, at least two analogue inputs for the signal concerned with the comburant flowrate and the signal concerned with the fuel flowrate respectively, at least two digital inputs for the boiler thermostat signal and the burner electric valve signal respectively, and at least four digital outputs for the feeding of an air and gas oil probe, the feeding of a gas oil flowrate probe, the anticlockwise rotation of the motorized strap and the clockwise rotation of the same, respectively.
  • said electronic member can be provided with an asynchronous serial gate for connection to a processor.
  • two further analogical inputs can be provided respectively for the smoke temperature and the outer temperature, and an impulsive input for the control of gas meters.
  • a display five precision adjustment means or trimmers, three push buttons and five light indicators are provided.
  • the device according to this invention comprises (see Figures 2 and 3) a fuel flowrate sensor 1 which is sensitive to the mass flowrate and is capable of transducing the presence/absence of network at the terminals of the electric valve (not shown) for controlling the fuel flowrate into an ON/OFF electric signal.
  • such device comprises a comburant flowrate sensor 2, which is sensitive to the mass flowrate, and a transduction, adjustment and actuation electronic member, which is endowed with an inner storage device capable of keeping for a practically unlimited time the values of the flowrates measured by said sensors 1 and 2 when the system is started, and capable of receiving the signals from said sensors 1 and 2, as well as of realizing a constant adjustment algorithm and of controlling the ouptut towards the actuator 4.
  • auxiliary devices like a display 5 for visuallizing messages and the values useful to the human operator, and with push buttons 6, pilot lights 7 and adjustment potentiometres 8.
  • Such functions are realized in a virtual way through a microprocessor system endowed with a programme (Firmware) and with suitable interfaces, as well as a mororized strap 9, which as a matter of practice is an electromechanical actuator that, on command of an electric impulse opens or closes an opening for the passage of comburant air.
  • the device according to this invention stores on command of the human operator the values of the fuel and the comburant flowrates when the system is started. It is supposed that the operator, after adjusting the burner-generator 4 group optimally, employing a conventional hand-operated set of tools, gives the machine the order of "storing" such values for future use.
  • the member 3 which is shown schematically in Figure 4, is a tight-seal container with a transparent cover having two electronic cards.
  • the first one i.e. the upper card 10 is provided with the display 5, three push buttons 6, five pilot lights or leds 7 and five adjustment potentiometres or trimmers 7.
  • the device is further endowed with an analogue input for air flowrate, an analogue input for gas oil flowrate, a digital input for the boiler thermostat, and a digital input fot the burner electric valve.
  • four digital outputs are also provided respectively for feeding the air and gas oil probe, for activating the gas oil flowrate probe, for the anticlockwise rotation of the means 9 and the clockwise rotation of the same.
  • Two further analogue inputs and an impulsive input are also provided in case the smoke temperature and the outer temperature or possibly the control of gas metres are to be respectively detected and controlled.
  • an asynchronous gate RS-232 is provided for connecting the device to a computer.
  • the two first inputs are employed for measuring the gas oil and air fllowrates whereas the two other inputs can be employed just following a future expansion of the system itself, and they allow the smoke temperature and the outer temperature to be measured.
  • the first allows the zero value of the gas oil sensor 1 to be stored during the stop periods of the burner 4, while the second input allows the consumption of fuel and the air/gas oil ratio to be controlled.
  • the first one serves the purpose of feeding the air and gas oil flowrate probes, while the second one is to activate the gas oil flowrate probe, and finally the least two serves the purpose of modifying, through the actuation of a clockwise or anticlockwise rotation, the position of the adjusting means 9.
  • Such means 9, which is an actuation to the means of the plant, has the function of controlling the air flowrate to the burner 4, by increasing or decreasing according to the requirements the opening angle of the same.
  • the trimmers 8 (which are pointed out in Figure 4 as T1, T2,..., T5) perform a very important function in the starting phase of the device; indeed, as they are completely assimilable to analogue inputs they are capable of receiving and memeorizing some parameters which are absolutely resuired for controlling the plant itself.
  • the hardware level storing of such data is useful in case of lack of supply for resetting the input parameters.
  • the introduction of the values through the rotation of the trimmers 8 makes it much easier to perform the starting operations with respect to any possible introduction from the keyboard.
  • the two “storage” trimmers 8 (T1 and T4) are employed for memorizing through the values of air and gas oil flowrate the combustion ratio;
  • the "stability trimmer 8 (T2) allows the range (dead range) to be widened within which the combustion ratio can change without intervention of control;
  • the "gain” trimmer 8 (T3) allows the rotation duration (gain) to be controlled of the means 9 for each impulse received;
  • the "contrast” trimmer 8 (T5) finally allows the luminosity of the display 5 to be changed.
  • Thee three push buttons 6 (P1, P2 and P3) that the member 3 is endowed with, perform different functions according to the state in which the device according to this invention is found.
  • the simultaneous pushing of the three push buttons 6 causes, if the device is in the alarm state, the resetting of the state itself; in all other cases, by pressing simultaneously the push buttons 6, the resetting is obtained of all stored values.
  • the leds 7 (L1, ..., L5) are employed for displaying immediatly some operations that the device is performing, as well as the state of the device itself; the function of said leds 7, and the function of the push buttons 6, both depend on the state of the device.
  • the device according to the present invention pan control the combustion and it can also perform the distribution of consumptions.
  • the auxiliary functions such as the supply transformer and the input interface are contained on the second lower card.
  • the control of combustion is carried out by the device keeping constant the ratio between the air flowrate and the gas oil flowrate in the burner; such ratio is kept equal to an optimal value set forth by the operator in the starting phase.
  • the ways for carrying the control process into effect are the following: the device, when the plant is on, measures continuously the air and the gas oil flowrates and controls the two flowrates so that their ratio (the combustion ratio) is equal to the value already set forth, inside a given range. If the measured ratio is different from that set forth in advance, the device changes the flowrate by acting on the strap 9.
  • the device stores for each day of the year the total flowrate of gas oil and the values of consumption.
  • the device can be in a definite state according to the task it is performing. More particularly, the operational states are:
  • the normal operation state is that in which the device operates during the process control, when no alarm occurs. Such state is put into evidence by the constant fixed lighting of the led 7 L2; then the leds 7 L1 and L3 can light; the lighting of such leds 7 points out that an action is in progress on the control means 9 for performing a rotation respectively in the clockwise and the anticlockwise sense and then for decreasing or increasing the air flowrate. It is possible that during the control action the means 9 performs oscillations, but such drawback can be removed through the trimmer 8 T2 and/or the trimmer 8 T3, by suitably changing the dead band and/or gain.
  • the display 5 visualizes a series of messages that give indications about the operations in progress.
  • the first line always displays the date and time; the second line changes according to the state of the plant.
  • the display visualizes the "zero value" as volts of the gas oil probe as well as the number of seconds passed since the last updating of such value.
  • the state of the thermostat becomes ON, the last value of the zero stored with the burner 4 in the off state is reported.
  • the burner 4 is on, after a thirty seconds waiting time (which is necessary for obtaining the first reading), which is signaled on the displays 5, the measured combustion ratio and the combustion ratio set forth in advance are visualized.
  • the alarm state is that in which the device is found when an alarm occurs owing to a sensor 1 or 2 which is outside range due to a wrong operation of the probe.
  • the presence of an alarm is signaled by the content fixed lighting of the led 7 L4 and by the simultaneously blinking of the leds 7 L1 and L3, in addition to be signalled on the display 5. All push buttons 6 are inactivated till the alarm is present.
  • the led 7 L4 keeps lighted. Resetting is performed by pressing the push buttons 6 P1, P2 and P3 simultaneously.
  • Adjustment of the clock in that state it is possible to adjust the inner clockwise of the device; the access to the state is allowed just if the burner electric valve is OFF.
  • the adjustment is to be carried out by pressing the push buttons 6 P1 and P3 simultaneously, the display 5 shows the date and the hour stored.
  • the changed in the clock is to be carried out through the push buttons 6 P1 and P2: in particular, by means of the push button P1 the slider can be shifted below the quantity to be changed; by means of the push button 6 P2, the quantity pointed out the slider is caused to go forward by one unit.
  • the push button 6 P3 the display advancement is obtained and the device goes out of the state.
  • Distribution of consumptions in that state it is possible to know the total fuel consumption at a particular date set forth in advance.
  • the consumption is of the progressive type (from the beginning of the season) and it refers to the midnight of the day selected or to the present hour if the day selected is that in progress.
  • the access to the state is to be carried out by pressing the push buttons 6 P2 and P3 simultaneously.
  • a mask is visualized in which the actual date is reported.
  • the push buttons 6 it is also possible to visualize consumptions relating to a preselected date; in particular, by means of the push button 6 P1 the slider is shifted below the date so pointing out the quantity to be changed; by means of the push button 6 P2 the quantity pointed out by the slider is caused to advance by one unit.
  • the push button 6 P3 the visuallization is obtained of consumption referred to the date selected.
  • the diplay 5 is caused to advance and the device goes out of the state.
  • Calibration in the calibration state, it is possible to perform the starting of the device storing the operational quantities.
  • the display 5 shows the functions of the single push buttons.
  • the calibration state is signaled by the led 7 L5.
  • a pulse is transmitted to the strap 9 for a rotation whose duration is equal to a gain, respectively in the clockwise and in the anticlockwise sense; during the pressing of such push buttons 6, the leds 7 L1 and L3 respectively light.
  • the lighting of the leds 7 L1 and L4 points out the trimmers 8 on which it is necessary to act for storing the values of air and gas oil flowrates.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP19910830521 1990-11-30 1991-11-27 Air-fuel ratio control device for heat generators, particularly for civil plants Ceased EP0488969A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4853690 1990-11-30
IT48536A IT1242025B (it) 1990-11-30 1990-11-30 Apparecchiatura per la regolazione del rapporto combustibile/ comburente nei generatori di calore, in particolare per impianti di uso civile.

Publications (2)

Publication Number Publication Date
EP0488969A2 true EP0488969A2 (de) 1992-06-03
EP0488969A3 EP0488969A3 (en) 1992-11-25

Family

ID=11267163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910830521 Ceased EP0488969A3 (en) 1990-11-30 1991-11-27 Air-fuel ratio control device for heat generators, particularly for civil plants

Country Status (2)

Country Link
EP (1) EP0488969A3 (de)
IT (1) IT1242025B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2723630A1 (fr) * 1994-08-11 1996-02-16 Seet Procede et dispositif de reglage automatique d'un bruleur a gaz pour chaudiere
WO1997020175A1 (de) * 1995-11-27 1997-06-05 Arcotec Oberflächentechnik Gmbh Steuereinrichtung einer gas-/luftgemischregelung für eine gasflammbehandlung
WO1999006768A1 (en) * 1997-08-01 1999-02-11 Webb, Mark, St. John Burner systems
WO2010126754A1 (en) * 2009-05-01 2010-11-04 Owens-Brockway Glass Container Inc. System and method for controlling temperature in a forehearth
CN110753891A (zh) * 2017-06-19 2020-02-04 环球油品有限责任公司 焙烧加热器的远程监测
EP3889505A1 (de) 2020-04-01 2021-10-06 Vaillant GmbH Verfahren und vorrichtung zur einstellung eines regelsollwertes für das brennstoff-luft-verhältnis beim betrieb eines brenners
CN114109616A (zh) * 2021-11-05 2022-03-01 江西洪都航空工业集团有限责任公司 一种发动机高空起动供油调节方法、装置和系统
EP3948077B1 (de) 2019-03-28 2024-02-21 BDR Thermea Group B.V. Verfahren zum betrieb eines vormischgasbrenners, vormischgasbrenner und kessel
US20240125473A1 (en) * 2021-02-18 2024-04-18 Bdr Thermea Group Bv Method for operating a gas heater

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104456965A (zh) * 2014-11-04 2015-03-25 广东万和新电气股份有限公司 燃气具燃气消耗量的推算方法
CN104359226A (zh) * 2014-11-04 2015-02-18 广东万和新电气股份有限公司 燃气具耗气量的计算方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1571906A (en) * 1977-11-22 1980-07-23 British Gas Corp Air fuel gas ratio controls for burners
US4498863A (en) * 1981-04-13 1985-02-12 Hays-Republic Corporation Feed forward combustion control system
US4508261A (en) * 1982-01-28 1985-04-02 Gerald Blank Hot water control and management system
US4712996A (en) * 1986-11-21 1987-12-15 Emerson Electric Co. Gas burner control system with mass flow sensor
US4837731A (en) * 1987-07-07 1989-06-06 Honeywell Incorporated System for time programming of states by communicating time data via a continuously rotatable potentiometer

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2723630A1 (fr) * 1994-08-11 1996-02-16 Seet Procede et dispositif de reglage automatique d'un bruleur a gaz pour chaudiere
WO1997020175A1 (de) * 1995-11-27 1997-06-05 Arcotec Oberflächentechnik Gmbh Steuereinrichtung einer gas-/luftgemischregelung für eine gasflammbehandlung
US6285922B1 (en) * 1995-11-27 2001-09-04 Fritz Bloss Device for controlling a gas-air mixture for a gas flame treatment
WO1999006768A1 (en) * 1997-08-01 1999-02-11 Webb, Mark, St. John Burner systems
WO2010126754A1 (en) * 2009-05-01 2010-11-04 Owens-Brockway Glass Container Inc. System and method for controlling temperature in a forehearth
US8191387B2 (en) 2009-05-01 2012-06-05 Owens-Brockway Glass Container Inc. System and method for controlling temperature in a forehearth
US8549883B2 (en) 2009-05-01 2013-10-08 Owens-Brookway Glass Container Inc. System and method for controlling temperature in a forehearth
US11365886B2 (en) 2017-06-19 2022-06-21 Uop Llc Remote monitoring of fired heaters
CN110753891A (zh) * 2017-06-19 2020-02-04 环球油品有限责任公司 焙烧加热器的远程监测
EP3948077B1 (de) 2019-03-28 2024-02-21 BDR Thermea Group B.V. Verfahren zum betrieb eines vormischgasbrenners, vormischgasbrenner und kessel
EP3889505A1 (de) 2020-04-01 2021-10-06 Vaillant GmbH Verfahren und vorrichtung zur einstellung eines regelsollwertes für das brennstoff-luft-verhältnis beim betrieb eines brenners
DE102020109102A1 (de) 2020-04-01 2021-10-07 Vaillant Gmbh Verfahren und Vorrichtung zur Einstellung eines Regelsollwertes für das Brennstoff-Luft-Verhältnis beim Betrieb eines Brenners
EP3889505B1 (de) 2020-04-01 2024-07-10 Vaillant GmbH Verfahren und vorrichtung zur einstellung eines regelsollwertes für das luft-brennstoff-verhältnis beim betrieb eines brenners
US20240125473A1 (en) * 2021-02-18 2024-04-18 Bdr Thermea Group Bv Method for operating a gas heater
CN114109616A (zh) * 2021-11-05 2022-03-01 江西洪都航空工业集团有限责任公司 一种发动机高空起动供油调节方法、装置和系统
CN114109616B (zh) * 2021-11-05 2023-09-19 江西洪都航空工业集团有限责任公司 一种发动机高空起动供油调节方法、装置和系统

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IT9048536A0 (it) 1990-11-30
EP0488969A3 (en) 1992-11-25
IT1242025B (it) 1994-02-02
IT9048536A1 (it) 1992-05-30

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