EP4177521A3 - Method for evaluating a quasi-stationary pressure difference on a gas boiler, which can be determined by a sensor, and corresponding gas boiler - Google Patents

Method for evaluating a quasi-stationary pressure difference on a gas boiler, which can be determined by a sensor, and corresponding gas boiler Download PDF

Info

Publication number
EP4177521A3
EP4177521A3 EP22201795.6A EP22201795A EP4177521A3 EP 4177521 A3 EP4177521 A3 EP 4177521A3 EP 22201795 A EP22201795 A EP 22201795A EP 4177521 A3 EP4177521 A3 EP 4177521A3
Authority
EP
European Patent Office
Prior art keywords
fuel
sensor
gas boiler
mass flow
mixing device
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.)
Pending
Application number
EP22201795.6A
Other languages
German (de)
French (fr)
Other versions
EP4177521A2 (en
Inventor
Enno Jan Vrolijk
Jens Hermann
Markus Weingart
Andreas KERSCHREITER
Simon Bernhard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Landshut GmbH
Original Assignee
Ebm Papst Landshut GmbH
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 Ebm Papst Landshut GmbH filed Critical Ebm Papst Landshut GmbH
Publication of EP4177521A2 publication Critical patent/EP4177521A2/en
Publication of EP4177521A3 publication Critical patent/EP4177521A3/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements 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
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • 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
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05001—Control or safety devices in gaseous or liquid fuel supply lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05002—Valves for gaseous fuel supply lines
    • 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
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • 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
    • F23N2227/00—Ignition or checking
    • F23N2227/12—Burner simulation or checking
    • F23N2227/16—Checking components, e.g. electronic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/10—Fail safe for component failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/12—Fail safe for ignition failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2233/00—Ventilators
    • F23N2233/06—Ventilators at the air intake
    • F23N2233/08—Ventilators at the air intake with variable speed
    • 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
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/18—Groups of two or more valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/04—Heating water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/06—Space-heating and heating water

Landscapes

  • 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)

Abstract

Die Erfindung betrifft ein Verfahren zur Auswertung einer von einem Sensor erfassbaren quasi-stationären Druckdifferenz an einer Gastherme, wobei der Sensor ein Differenzdrucksensor oder ein Massenstromsensor ist, wobei die Gastherme eine Mischeinrichtung (4) zum Mischen eines von einem Brennstoffeinlass (G) zuströmenden Brennstoffs und einer von einem Lufteinlass (L) zuströmenden Luft zu einem Brennstoff-Luft-Gemisch, ein Gebläse (5) zum Ansaugen des Brennstoffs und der Luft durch die Mischeinrichtung (4), eine Hauptmengendrossel (3) zur Begrenzung eines Massenstroms des Brennstoffs in die Mischeinrichtung (4), ein stromauf der Hauptmengendrossel (3) angeordnetes Regelventil (2) zur Regelung eines Massenstroms des Brennstoffs in die Mischeinrichtung (4) sowie ein stromauf des Regelventils (2) angeordnetes Sicherheitsventil (1) zur Unterbrechung des Massenstroms des Brennstoffs aufweist, wobei der Sensor einen Differenzdruck zwischen einem Druck (p2) an einem Messpunkt stromauf der Hauptmengendrossel (3) und stromab des Regelventils (2) und einem Referenzdruck (p0, p1) an einem Referenzmesspunkt erfasst und an eine Auswerteelektronik übermittelt, wobei die Auswerteelektronik den Differenzdruck während einer Vorspülphase, in welcher das Sicherheitsventil (1) geschlossen ist, mit dem Differenzdruck nach der Vorspülphase vergleicht und durch den Vergleich einen Fehler erkennt.The invention relates to a method for evaluating a quasi-steady-state pressure difference in a gas boiler that can be detected by a sensor, the sensor being a differential pressure sensor or a mass flow sensor, the gas boiler having a mixing device (4) for mixing a fuel flowing in from a fuel inlet (G) and air flowing in from an air inlet (L) to form a fuel-air mixture, a blower (5) for sucking in the fuel and the air through the mixing device (4), a main volume throttle (3) for limiting a mass flow of the fuel into the mixing device (4), a control valve (2) arranged upstream of the main quantity throttle (3) for regulating a mass flow of fuel into the mixing device (4) and a safety valve (1) arranged upstream of the control valve (2) for interrupting the mass flow of fuel, wherein the sensor detects a differential pressure between a pressure (p2) at a measuring point upstream of the main flow restrictor (3) and downstream of the control valve (2) and a reference pressure (p0, p1) at a reference measuring point and transmits it to evaluation electronics, with the evaluation electronics measuring the differential pressure during a pre-purge phase, in which the safety valve (1) is closed, with the differential pressure after the pre-purge phase and detects an error through the comparison.

EP22201795.6A 2021-10-20 2022-10-17 Method for evaluating a quasi-stationary pressure difference on a gas boiler, which can be determined by a sensor, and corresponding gas boiler Pending EP4177521A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021127225.4A DE102021127225A1 (en) 2021-10-20 2021-10-20 Method for evaluating a quasi-steady-state pressure difference that can be detected by a sensor at a gas boiler and associated gas boiler

Publications (2)

Publication Number Publication Date
EP4177521A2 EP4177521A2 (en) 2023-05-10
EP4177521A3 true EP4177521A3 (en) 2023-08-02

Family

ID=83898257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22201795.6A Pending EP4177521A3 (en) 2021-10-20 2022-10-17 Method for evaluating a quasi-stationary pressure difference on a gas boiler, which can be determined by a sensor, and corresponding gas boiler

Country Status (5)

Country Link
US (1) US20230118991A1 (en)
EP (1) EP4177521A3 (en)
KR (1) KR20230056616A (en)
CN (1) CN115993203A (en)
DE (1) DE102021127225A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213729A (en) * 1984-04-09 1985-10-26 Matsushita Electric Ind Co Ltd Gas combustion safety device
EP2966354A1 (en) * 2014-07-08 2016-01-13 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP3404326A1 (en) * 2017-05-19 2018-11-21 Honeywell International Inc. System and approach for controlling a combustion chamber

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60111359T2 (en) 2000-01-28 2006-05-11 Robertshaw Controls Co. DIAGNOSTIC DEVICE FOR FIRING SYSTEM
DE102005033611B3 (en) 2005-07-14 2006-10-19 Honeywell Technologies S.A.R.L. Safe control of gas burner operation, blocks ignition when leakage is detected at a point between control valve and safety shut-off valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60213729A (en) * 1984-04-09 1985-10-26 Matsushita Electric Ind Co Ltd Gas combustion safety device
EP2966354A1 (en) * 2014-07-08 2016-01-13 Honeywell Technologies Sarl Method and controller for operating a gas burner
EP3404326A1 (en) * 2017-05-19 2018-11-21 Honeywell International Inc. System and approach for controlling a combustion chamber

Also Published As

Publication number Publication date
KR20230056616A (en) 2023-04-27
EP4177521A2 (en) 2023-05-10
DE102021127225A1 (en) 2023-04-20
CN115993203A (en) 2023-04-21
US20230118991A1 (en) 2023-04-20

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