EP2499432A2 - Dispositif de soupape et procédé de sécurisation thermoélectrique de l'allumage pour appareils fonctionnant avec des gaz - Google Patents

Dispositif de soupape et procédé de sécurisation thermoélectrique de l'allumage pour appareils fonctionnant avec des gaz

Info

Publication number
EP2499432A2
EP2499432A2 EP10782520A EP10782520A EP2499432A2 EP 2499432 A2 EP2499432 A2 EP 2499432A2 EP 10782520 A EP10782520 A EP 10782520A EP 10782520 A EP10782520 A EP 10782520A EP 2499432 A2 EP2499432 A2 EP 2499432A2
Authority
EP
European Patent Office
Prior art keywords
gas
valve body
valve
magnetic insert
closure
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.)
Granted
Application number
EP10782520A
Other languages
German (de)
English (en)
Other versions
EP2499432B1 (fr
Inventor
Artur Fehringer
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.)
Anstoss Regelgerate GmbH
Original Assignee
Anstoss Regelgerate 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 Anstoss Regelgerate GmbH filed Critical Anstoss Regelgerate GmbH
Publication of EP2499432A2 publication Critical patent/EP2499432A2/fr
Application granted granted Critical
Publication of EP2499432B1 publication Critical patent/EP2499432B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples 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
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/107—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using mechanical means, e.g. safety valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—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
    • F23N2231/00—Fail safe
    • F23N2231/02—Fail safe using electric energy accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F23N2231/08—Fail safe for flame failures for pilot flame 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/14—Fuel valves electromagnetically operated
    • 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
    • F23N2235/24—Valve details

Definitions

  • the invention relates to a valve device for gas-operated devices, having a gas inlet and at least one gas outlet lass valve housing, in which for selectively releasing a flow path from the gas inlet to the gas outlet in a active state, a magnetic force exerting magnets z is provided z, which has a having movable closure member for closing the flow path, and a method for thermoelectric ignition protection of a gas-powered device.
  • valve devices or methods are used in particular in open or closed gas burners, space heaters, water heaters, water heaters, oven controls, absorber refrigerators, caravan heaters, patio heaters, infrared burners and the like.
  • thermoelectric ignition protection in particular a wide variety of solenoid valves are known.
  • thermoelectric ignition fuse with a valve housing and a button is known in which on the one hand a safety valve and on the other hand a
  • Control valve is provided.
  • Protective cap forms a circumferential collar, wherein on the end face of this annular collar one end of the winding is attached.
  • thermoelectric ignition fuses are, for example from DE 80 05 56 U and DE 91 17 110 Ul known.
  • the aim of the present invention is now to provide a Ventilvorrich ⁇ device of the initially mentioned kind, which is compact, by which a regulation of the gas passage is possible in a simple manner, while ensuring that at the same time in case of extinguishment of the gas flame Gas passage is reliably prevented.
  • the latter objectives should also be achieved with the method according to the invention.
  • valve device of the initially defined kind is characterized in that a movable valve body is received in the valve housing having an internal flow channel with at least one inlet opening and at least one outlet ⁇ opening for the bypassed gas, regardless of the position of the movable valve body, the inlet opening of the inner flow channel in a non-active state of Magneteinsat zes from the closure part is sealingly closed.
  • valve body movably received in the valve body can be easily regulated, the gas flow and thus the size of the gas flame.
  • the valve body Regardless of the Stel ⁇ ment of the valve body is, however, si ⁇ cherhog by the sealing completion of the inner flow channel with the help of the closure part that - unless the magnetic insert is not activated - a gas passage is prevented.
  • the activation of the magnetic insert, in particular a electromagnets gnets recorded in the magnetic insert is usually ensured by a starting phase of the device with the aid of a heated gas from the pilot flame or a thermal ⁇ elements. Therefore, if the gas flame does not heat the thermo ⁇ element, the magnetic insert is no longer
  • valve body between the gas outlet completely occlusive closed position and the gas outlet completely releasing open position is arbitrarily positionable. Accordingly, with the aid of the valve device, if the closure element is arranged in the open position against the magnetic insert, gas passage can be prevented with the aid of the valve body and thus the gas flame can be extinguished.
  • valve body With regard to a possible automatic operation of the valve device, it is advantageous if a control or regulating unit is provided for positioning the valve body. It is also convenient to achieve the activation of the magnetic insert with a single control command, that a control unit is provided for activating the magnetic insert.
  • the valve body In order to be able to position the valve body in a simple manner in a wide variety of positions between an open position and a closed position, it is advantageous if the valve body is assigned a drive unit, preferably a stepper motor, preferably controlled via the control unit.
  • the valve body is designed as a one-piece hollow body.
  • the valve body may, however, also be composed telescopically of at least two parts.
  • valve body When the valve body has an outer circumferential recess on ⁇ , which is connected to the at least one outlet opening of the inner flow channel, can be regulated in a simple manner the gas passage characterized by the outer well to the gas outlet in the valve housing is arranged at least partially in alignment. On the more or less aligned or overlapping arrangement of the recess with respect to the gas outlet can thus be easily controlled, the free passage opening and thus the gas flowing through. If, in addition to the gas flame to be protected a pilot flame is provided for heating the thermocouple, it is advantageous if at least two gas outlets, in particular for a Zündgasan gleich or a main burner port, are provided, depending on the position of the valve body one or both gas outlets the outlet of the . Flow channels communicate.
  • the valve device is in a closed position, on the other hand, the closure part is moved to a position in which it is held by the magnetic insert in its active state, it is advantageous if when activated the Control unit of the valve body is positioned in the closed position, so that the Ver ⁇ closing part is positioned against the force of a spring such that an armature of the closure part is substantially applied to an electromagnet of the magnetic insert.
  • the Steuert. Control unit is configured to control or regulate an auxiliary current for activation of the magnetic insert within a predetermined safety time interval or until reaching a threshold value for a source voltage of a thermocouple.
  • control unit When the control unit is adapted to switch a switching device, in particular a transistor, after reaching the threshold value for the source voltage of the thermocouple in a closed position, in which the magnetic insert. is supplied with the source voltage of the thermocouple, it is possible - apart from changes in position of the valve body - to maintain the safety function of the valve device, with only a minimum maintenance energy for the transistor is required, but no further power supply is needed.
  • a switching device in particular a transistor
  • the method of the initially cited type is characterized in that a movable valve body is moved into a closed position for igniting a gas flame, wherein the valve body entrains a closure body, so that the closure body rests against an active magnetic insert and the closure body is held by a magnetic force, wherein the valve body is then moved into a position in which the closure body, an inner flow passage in the valve body is released, wherein the closure body seals the inner flow passage regardless of the position of the closure body in the absence of magnetic force.
  • valve body and the Ver ⁇ closure body By moving the valve body and the Ver ⁇ closure body so that it can be gripped by the force exerted by the magnetic insert magnetic force the entrainment, it is ensured that, before the valve body is converted into an at least partially open position, the gas flow path is released, wherein, in the take-away the closure body of this particular is displaced against the elastic force of a spring, so that it is preferably ensured due to this elastic force in the absence of magnetic force that a gas passage is impossible.
  • the closure body is held in its open position, on the other hand to one of the active gas or
  • the magnetic insert is fed with an auxiliary current at the beginning of the ignition of a gas flame and after ignition of the gas flame of the magnetic insert is fed via a coming from a thermocouple electromagnetic force, said in the line coming from the thermocouple, a transistor is arranged.
  • a transistor is arranged in order to ensure that the transistor is checked before each start of the device.
  • the auxiliary current is diverted to the thermocouple in the event of a short circuit of the transistor. Such a diversion is ensured in particular due to the lower internal resistance of the thermocouple; by redirecting the auxiliary flow is thus
  • FIG. 1 shows a sectional view of the valve device according to the invention in a non-activated state of a magnetic insert.
  • FIG. 2 shows a sectional view according to FIG. 1, wherein a valve body is transferred to a lower closed position after initiation of a start command;
  • Fig. 3 is a sectional view according to FIGS. 1 and 2, wherein a valve body is shown in an upwardly shifted open position.
  • FIG. 1 shows a valve apparatus 1 for gas-operated appliances, which has a valve housing 2 with a gas inlet 3 and a gas outlet 4.
  • a valve body 5 is slidably received, which is designed as a hollow body, so that a flow channel 6 with a
  • Inlet opening 7 and a gas outlet opening 8 is provided.
  • the hollow body 5 is in this case by means of two sealing rings 9 in an inner channel 10 of the valve housing 2 sealingly movable movable.
  • a stepping motor 11 is provided, which is connected via a threaded spindle 12 with the valve body 5.
  • the stepper motor 11 is again verbun ⁇ with a control unit 13, via which the motor is activated.
  • valve body 5 In the position shown in FIG. 1, the valve body 5 is in an upper position, in which the Gasaustrittsöff ⁇ tion 8 of the valve body 5 with the gas outlet 4 of
  • Valve body 2 is in communication. However, the gas inlet opening 7 in the inner flow channel 6 of the valve body 5 is closed tightly via a sealing plate 14 of a closure element 15 of a magnetic insert 16.
  • the magnetic insert 16 has, in particular, an electromagnet 17, which is received in a stationary manner in the valve housing via a fixing 18. In the position shown in Fig. 1, the magnetic insert 16 or the electromagnet 17 is not activated, i. There is no magnetic force exerted, so that the closure member 15 is disposed via a spring element 19 in a position remote from a protective cap 20 position in which it seals the gas inlet opening 7 in the flow channel 6.
  • the magnetic insert 16 and the recorded herein electromagnet 17 is via a conduit 21, 24 to the control unit 13 verbun ⁇ via which an auxiliary current in a start phase, if the provided with the valve device gas appliance is to be acti ⁇ fourth, to activate the Electromagnet 17 is ⁇ leads.
  • the controller 13 is connected via a line 22 to a field effect transistor (FET) 23, which is connected via the line 24 as well as the line 21 to the electromagnet 17.
  • FET field effect transistor
  • a thermocouple 25 is provided, which is connected via a line 26 to the control unit 13, so that, unless before the expiry of a pre give ⁇ NEN safety time sufficient electromotive force (EMF) is detected at a measuring point 27, the FET 23 in the conducting state over ⁇ is performed and the solenoid 17 of the magnetic insert 16 is supplied with this emf.
  • EMF electromotive force
  • Actuator 11 is activated, so that the valve body 5 is transferred to the lower closed position shown in FIG.
  • the closure piston 5 is up to a stop 27 of a unte ⁇ ren armature plate 15 'of the shutter member 15 moves downward.
  • the movable valve body 5 is - if the magnetic insert 16 is not activated - sealed in any position by the sealing plate 14 of the magnetic insert 16, so that a gas inlet from the gas inlet 3 is not possible.
  • This auxiliary current is fed until at a measuring point 27 ⁇ a sufficient from the thermocouple 25 back EMF is detected, but no longer than for the duration of the guard time. ⁇ to coincide with the activation of the auxiliary current to an ignition system 28 is activated and the movable valve body 5 driven by the step motor 6 to the desired position (see. FIG. 3).
  • a further (not shown) gas outlet be provided which leads to an ignition ⁇ burner, then depending on the position of the valve body 5, only a single gas outlet or both can be shared. If the power supply ends before a sufficient EMF is still produced by the thermocouple 25, the armature plate 15 'can not be held by the magnetic insert 16 and its electromagnets 17, so that the sealing plate 14 via the force of the spring 19 to the inlet opening 7 in the Flow channel 6 is ge ⁇ presses, regardless of the position in which the Ven ⁇ til stresses 5 is currently located (see Fig. 1). As a result, it is reliably ensured that the flow path through the valve device 1 is interrupted. The ignition is thus switched off ⁇ , which is a so-called. Security or lockout.
  • the flow path from the gas inlet 3 to gas outlet 4 remains demzu ⁇ follow open until either the EMF of the thermocouple 25 is less than the holding threshold value, the FET is turned off (for example, because the desired temperature has been reached) or, however, the valve body 5 is positioned so far down that the inlet opening 7 is supported on the sealing plate 14 of the circuit member ⁇ Ver. 5
  • the valve body 5 can therefore be positioned so that the variable overlap of the recess 29 with the gas outlet 4 different sized free outlet openings can be ⁇ a set.
  • thermocouple 25 can be provided, via which the ignition system 28 already before the sufficient EMF of the thermocouple 25 can be turned off, whereby the power consumption is further reduced. Since the thermocouple 25 requires a certain cooling time in the event of a flame breakage of the burner 30 until the required holding EMF is undershot, a re-ignition test can be initiated by the flame detector during this time.
  • actuators include a start, stop, more power, and less power button, and depending on the software, the more and less power buttons may be replaced by a reference potentiometer and a thermistor, thereby providing a high performance thermostatic modulation of the burner output can be achieved.
  • the actuators can of course also be replaced or supplemented by external keys or an RF remote control or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)

Abstract

La présente invention concerne un dispositif de soupape (1) et un procédé de sécurisation thermoélectrique de l'allumage pour des appareils fonctionnant avec des gaz, le dispositif de soupape comprenant un boîtier de soupape (2) qui présente une entrée de gaz (3) et au moins une sortie de gaz (4) et contient pour le dégagement sélectif d'une voie de passage s'étendant de l'entrée de gaz (3) à la sortie de gaz (4), un élément rapporté magnétique (16) qui, lorsqu'il est actif, exerce une force magnétique et qui présente une pièce de fermeture (15) mobile destinée à refermer la voie de passage. Selon l'invention, un corps de soupape (5) mobile se trouve dans le boîtier de soupape (4), ledit corps de soupape présentant un canal de circulation intérieur (6) qui présente au moins une ouverture d'entrée (7) et au moins une ouverture de sortie (8) destinées au gaz à faire circuler. Indépendamment de la position du corps de soupape (5) mobile, l'ouverture d'entrée (7) du canal de circulation intérieur (6) est refermée de façon étanche par la pièce de fermeture (15) lorsque l'élément rapporté magnétique (16) est inactif.
EP10782520.0A 2009-11-09 2010-11-09 Dispositif de soupape et procédé de sécurisation thermoélectrique de l'allumage pour appareils fonctionnant au gaz Not-in-force EP2499432B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0177009A AT508263B1 (de) 2009-11-09 2009-11-09 Ventilvorrichtung sowie verfahren zur thermoelektrischen zündsicherung für gasbetriebene geräte
PCT/AT2010/000427 WO2011054022A2 (fr) 2009-11-09 2010-11-09 Dispositif de soupape et procédé de sécurisation thermoélectrique de l'allumage pour appareils fonctionnant avec des gaz

Publications (2)

Publication Number Publication Date
EP2499432A2 true EP2499432A2 (fr) 2012-09-19
EP2499432B1 EP2499432B1 (fr) 2018-12-26

Family

ID=43302227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10782520.0A Not-in-force EP2499432B1 (fr) 2009-11-09 2010-11-09 Dispositif de soupape et procédé de sécurisation thermoélectrique de l'allumage pour appareils fonctionnant au gaz

Country Status (3)

Country Link
EP (1) EP2499432B1 (fr)
AT (1) AT508263B1 (fr)
WO (1) WO2011054022A2 (fr)

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NL2004917C2 (en) * 2010-06-18 2011-12-20 Intell Properties B V Device and method for electrically controlled turning off of a gas flame of a gas hob.
ITMI20121633A1 (it) * 2012-10-01 2014-04-02 Controlling Saving Energy Italia S R L Termostato
GB2526045A (en) * 2014-02-07 2015-11-18 Haven Ltd Valve and system for controlling a gas burner
PL3018413T3 (pl) * 2014-11-05 2019-06-28 Actek S.R.L. Urządzenie sterujące do piekarnika gazowego
US10168054B2 (en) 2016-04-19 2019-01-01 Actek S.R.L. Control device for gas ovens

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Also Published As

Publication number Publication date
WO2011054022A3 (fr) 2011-06-30
AT508263B1 (de) 2010-12-15
EP2499432B1 (fr) 2018-12-26
WO2011054022A2 (fr) 2011-05-12
AT508263A4 (de) 2010-12-15

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