EP2312213B1 - Dispositif de réglage pour brûleur à gaz - Google Patents

Dispositif de réglage pour brûleur à gaz Download PDF

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Publication number
EP2312213B1
EP2312213B1 EP10009204.8A EP10009204A EP2312213B1 EP 2312213 B1 EP2312213 B1 EP 2312213B1 EP 10009204 A EP10009204 A EP 10009204A EP 2312213 B1 EP2312213 B1 EP 2312213B1
Authority
EP
European Patent Office
Prior art keywords
gas
sensor
flow
venturi nozzle
outer chamber
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.)
Active
Application number
EP10009204.8A
Other languages
German (de)
English (en)
Other versions
EP2312213A3 (fr
EP2312213A2 (fr
Inventor
Jos Praat
Enno Vrolijk
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.)
Garrett Motion SARL
Original Assignee
Honeywell Technologies SARL
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 Honeywell Technologies SARL filed Critical Honeywell Technologies SARL
Publication of EP2312213A2 publication Critical patent/EP2312213A2/fr
Publication of EP2312213A3 publication Critical patent/EP2312213A3/fr
Application granted granted Critical
Publication of EP2312213B1 publication Critical patent/EP2312213B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/18—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
    • 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
    • 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
    • F23N2225/00—Measuring
    • F23N2225/04—Measuring pressure
    • F23N2225/06—Measuring pressure for determining flow

Definitions

  • the invention relates to a control device for gas burners according to the preamble of claim 1.
  • a control device for gas burners for providing a gas / air mixture for providing a gas / air mixture, namely for supplying a gas flow and a combustion air flow to a gas burner, known.
  • a gas flow guided in a gas line is mixed with an air flow guided in a combustion air line so as to provide the gas / air mixture to be supplied to the gas burner, this mixture of the gas flow with the combustion air flow taking place in a mixing device passing therethrough is provided that the gas line opens with a gas nozzle within the combustion air duct downstream of a built-in combustion air duct throttling.
  • the thus provided gas / air mixture can be supplied to the gas burner with a blower.
  • a mixing device designed as a Venturi nozzle is known, by means of which a gas stream can be mixed with a combustion air stream to provide a gas / air mixture to be supplied to a gas burner.
  • the venturi disclosed therein has an inlet opening for the combustion air flow and an outlet opening for the gas / air mixture.
  • the gas flow can be supplied to the Venturi nozzle via a gas guide channel in order to mix the combustion air flow and the gas air flow in a mixing region of the Venturi nozzle with formation of the gas / air mixture.
  • the reference pressure is preferably the ambient pressure
  • gas then passes from the gas line into the environment via the sensor designed as a flowmeter or anemometer.
  • the amount of gas that possibly enters the environment via the sensor in such circumstances is so low that it is not safety-critical.
  • the amount of gas can be detected with a gas sensor, so that when an installer on such a control device uses a gas sensor, for the installer may cause the erroneous impression, via the control device would escape a safety-critical amount of gas into the environment. This can cause unnecessary service to the controller.
  • EP 2 090 827 A2 known. Further prior art is in EP 1 744 102 A1 and FR 2 921 461 A1 disclosed.
  • the invention is based on the problem of creating a novel control device for gas burners.
  • This problem is solved by a control device for gas burner with the features of claim 1.
  • the invention attacks the reference point of the sensor to a device in which the reference pressure prevails, and wherein the device is connected via a coupling line with the Venturi nozzle, namely with a portion of the Venturi nozzle, in the flow direction of the gas / air Mixture seen downstream of the mixing area of the same.
  • the coupling line via which the device to which the reference pressure of the sensor engages is connected to the Venturi nozzle, it can be ensured that any gas passing through the sensor to the reference point of the sensor, possibly due to pressure fluctuations in the gas line, enters the venturi. Nozzle is conveyed. In this case, then no gas can enter the environment, which could be detected by a gas sensor. In this way, unnecessary maintenance on fully functional control devices can be avoided.
  • the device to which the reference point of the sensor engages and which is connected via the coupling line with the Venturi nozzle two chambers separated by a filter on, namely an inner chamber, via the filter of a Ambient atmosphere is separated, and an outer chamber, which communicates with the ambient atmosphere, wherein the reference point of the sensor engages the inner chamber of the device, and wherein the coupling line acts on the outer chamber of the device and the outer chamber of the device with the Venturi Nozzle connects.
  • the subdivision of the device into two chambers, namely in the inner chamber and the outer chamber, has the advantage that there is no danger that contaminants from the ambient atmosphere in the range of designed as a flow meter or anemometer, electrical or electronic sensor can.
  • the present invention relates to a control device for gas burners for providing a gas / air mixture for the gas burner.
  • Fig. 1 a designed as a Venturi nozzle 10 mixing device of a control device according to the invention is shown, the Venturi nozzle 10 on the one hand a combustion air stream 11 and on the other hand a gas air stream 12 is supplied, which are mixed in a mixing region 13 of the Venturi nozzle and the Venturi nozzle 10 as Leave gas / air mixture 14.
  • the combustion air flow 11 can be supplied to the mixing device formed as a Venturi nozzle 10 via a combustion air line, not shown.
  • the gas stream 12 is supplied to the mixing device designed as Venturi nozzle 10 via a gas line 15, wherein the gas line 15 via a gas nozzle 16 in the mixing region 13 of the Venturi nozzle 10 opens.
  • the gas line 15 are according to Fig. 1 Gas valves 17 assigned.
  • the gas valves 17 can be opened and closed depending on the measurement signal of a sensor 18 so as to adjust the gas flow through the gas line 15 supplied to the Venturi nozzle 10 and so adjust the amount of gas in the gas / air mixture 14.
  • the sensor 18 is an electrical or electronic sensor 18 in the form of a flowmeter or anemometer which engages with a first measuring point 19 on the gas line 15 and with a reference point 20 on a device 21.
  • gas pressure is applied.
  • reference pressure is applied, wherein the reference pressure is preferably the ambient pressure of the environment of the control device.
  • the device 21, on which the reference point 20 of the sensor 18 engages, is coupled via a coupling line 22 to the mixing device of the control device according to the invention which is designed as a Venturi nozzle 10, the coupling line 22 on the Venturi nozzle 10 at a region or section thereof engages downstream of the mixing region 13 of the Venturi nozzle 10 seen in the flow direction of the gas / air mixture 14.
  • An inner chamber 23 is separated via the filter 25 from the outer chamber 24 and thus from the ambient atmosphere.
  • the outer chamber 24 communicates with the ambient atmosphere.
  • the reference point 20 of the sensor 19 acts on the inner chamber 23, which is separated via the filter 25 from the ambient atmosphere.
  • the coupling line 22 engages the outer chamber 22 which communicates with the ambient atmosphere, the coupling line 22 coupling the outer chamber 24 of the device 21 to the Venturi nozzle 10.
  • the filter 25 is embodied as a fine dust filter, it is ensured that no fine dust from the environment reaches the area of the sensor 18 and damages it or otherwise adversely affects it.
  • the device 21, namely the outer chamber 24 thereof, is after Fig. 1 associated with a flow line element 26.
  • the flow line element 26 serves to guide an air flow 27, which passes from the environment into the outer chamber 24 of the device 21. Furthermore, the flow guide 26 serves to guide a flow that passes from the inner chamber 23 of the device 21 into the outer chamber 24 thereof after passing through the filter 25.
  • control device In the control device according to the invention, even with pressure fluctuations in the gas line 25 is not the risk that even the smallest amounts of gas that do not affect the functionality and safety of the control device, but can be perceived by a gas sensor, get into the environment of the control device. As a result, unnecessary maintenance on the control device can be avoided.

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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)

Claims (5)

  1. Dispositif de réglage pour brûleur à gaz servant à la mise à disposition d'un mélange gaz/air, notamment à l'amenée d'un flux de gaz et d'un flux d'air de combustion à un brûleur à gaz, avec un dispositif de mélange servant au mélange du flux de gaz avec le flux d'air de combustion et ainsi à la mise à disposition du mélange gaz/air à amener au brûleur à gaz, sachant qu'au moins une soupape de gaz est positionnée dans une conduite de gaz (15) guidant le flux de gaz, ladite soupape étant réglée en fonction d'un signal de mesure d'un capteur électrique et/ou électronique (18), le capteur (18) se raccordant, avec un point de mesure, à la conduite de gaz (15) et une pression de référence régnant au niveau d'un point de référence (20) du capteur (18) et le dispositif de mélange étant réalisé sous la forme d'une buse à effet Venturi (10), la conduite de gaz (15) débouchant dans une région de mélange (13) de la buse à effet Venturi (10) dans laquelle le flux de gaz et le flux d'air de combustion sont mélangés pour former le mélange gaz/air, caractérisé en ce que le point de référence (20) du capteur (18) se raccorde à un dispositif (21) dans lequel règne la pression de référence, le dispositif (21) étant relié à la buse à effet Venturi (10) via une conduite de couplage (22), notamment à une région de la buse à effet Venturi (10) reposant en aval de la région de mélange (13) du mélange gaz/air, dans la direction d'écoulement dudit mélange.
  2. Dispositif de réglage selon la revendication 1, caractérisé en ce que le dispositif (21) auquel le point de référence (20) du capteur (18) se raccorde et qui est relié à la buse à effet Venturi (10) via la conduite de couplage (22) comporte des chambres séparées les unes des autres par un filtre (25), notamment une chambre (23) intérieure séparée d'une atmosphère ambiante via le filtre (25) et une chambre (24) extérieure reliée à l'atmosphère ambiante, le point de référence (20) du capteur (18) se raccordant à la chambre (23) intérieure du dispositif (21).
  3. Dispositif de réglage selon la revendication 2, caractérisé en ce que la conduite de couplage (22) se raccorde à la chambre (24) extérieure du dispositif (21) et que la chambre (24) extérieure du dispositif (21) est reliée à la buse à effet Venturi (10).
  4. Dispositif de réglage selon la revendication 2 ou 3, caractérisé en ce qu'un élément de conduite d'écoulement (26) est associé à la chambre (24) extérieure du dispositif (21), ledit élément guidant et/ou attrapant d'une part un écoulement d'air ambiant (27) rentrant dans la chambre (27) extérieure à partir de l'environnement ainsi que d'autre part un écoulement débordant de la chambre (23) intérieure dans la chambre (24) extérieure, à partir du capteur (18).
  5. Dispositif de réglage selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le filtre (25) positionné entre la chambre (23) intérieure et la chambre (24) extérieure est réalisé sous la forme d'un filtre à poussières fines entravant un passage des poussières fines de la chambre (24) extérieure dans la chambre (23) intérieure et ainsi en direction du capteur (18).
EP10009204.8A 2009-10-06 2010-09-04 Dispositif de réglage pour brûleur à gaz Active EP2312213B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009048405A DE102009048405A1 (de) 2009-10-06 2009-10-06 Regeleinrichtung für Gasbrenner

Publications (3)

Publication Number Publication Date
EP2312213A2 EP2312213A2 (fr) 2011-04-20
EP2312213A3 EP2312213A3 (fr) 2014-04-09
EP2312213B1 true EP2312213B1 (fr) 2016-08-10

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Family Applications (1)

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US (1) US8668491B2 (fr)
EP (1) EP2312213B1 (fr)
DE (1) DE102009048405A1 (fr)

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EP2312213A3 (fr) 2014-04-09
DE102009048405A1 (de) 2011-04-07
EP2312213A2 (fr) 2011-04-20
US8668491B2 (en) 2014-03-11
US20110081619A1 (en) 2011-04-07

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