EP2123979B1 - Gas regulator - Google Patents

Gas regulator Download PDF

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Publication number
EP2123979B1
EP2123979B1 EP09005857.9A EP09005857A EP2123979B1 EP 2123979 B1 EP2123979 B1 EP 2123979B1 EP 09005857 A EP09005857 A EP 09005857A EP 2123979 B1 EP2123979 B1 EP 2123979B1
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EP
European Patent Office
Prior art keywords
valve
gas
chamber
drive chamber
pressure
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Application number
EP09005857.9A
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German (de)
French (fr)
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EP2123979A2 (en
EP2123979A3 (en
Inventor
Frank Van Prooijen
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Garrett Motion SARL
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Honeywell Technologies SARL
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Publication of EP2123979A2 publication Critical patent/EP2123979A2/en
Publication of EP2123979A3 publication Critical patent/EP2123979A3/en
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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
    • F23N1/005—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
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/245—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electrical or electromechanical 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
    • 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
    • F23N2235/20—Membrane valves

Definitions

  • the invention relates to a gas control device.
  • a gas burner gas control device which comprises a safety valve, a main gas valve and two pressure regulators.
  • an output control pressure of a first pressure regulator is adjustable by a linear drive
  • a second pressure regulator limits the maximum permissible pressure of the gas flow to be supplied to a gas burner to the pressure of the air flow to be supplied to the burner.
  • the output control pressure of the first pressure regulator for changing the gas flow while maintaining the air flow is adjustable.
  • the invention is based on the object to provide a novel gas control device. This object is achieved by a gas control device having the features of claim 1.
  • both the safety valve and the main gas valve are each designed as a diaphragm valve.
  • the drive chambers of these two diaphragm valves are coupled together with the interposition of servo valves, which are designed as a three-way valve. Then, when a gas flow through the gas control device or through the safety valve and the main gas valve is to be released, all connected between the drive chambers of safety valve and main gas valve servo valves are opened.
  • By opening the servo valves is achieved that a pressure equalization between the two drive chambers takes place, in which case the drive chamber of the main gas valve is filled via the drive chamber of the safety valve. In this way, a relatively fast opening of the gas control device can be realized despite the use of diaphragm valves. Accordingly, with the gas control device according to the invention, the opening times of gas control devices with diaphragm valves can be shortened.
  • Fig. 1 shows a gas control device 10, wherein the gas control device 10 according to Fig. 1 a safety valve 11, a main gas valve 12 and a pressure regulator 13 comprises.
  • the safety valve 11 and the main gas valve 12 are each formed as spring-loaded diaphragm valves.
  • the safety valve 11 designed as a membrane valve comprises a membrane 14, which carries a valve body 15 and is acted upon by a spring element 16.
  • the diaphragm 14 of the safety valve 11 delimits a drive chamber 17 of the safety valve 11, in which a servo pressure prevails, from a gas inlet chamber 18, in which a gas inlet pressure prevails.
  • the spring force of the spring element 16 and the prevailing in the drive chamber 17 of the safety valve 11 servo pressure close the safety valve 11 against the prevailing in the gas inlet chamber 18 gas inlet pressure, for which purpose the valve body 15 of the safety valve 11 is pressed against a valve seat 19.
  • the drive chamber 17 and the gas inlet chamber 18 of the safety valve 11 are coupled via a line 20, wherein in the conduit 20, a diaphragm 21 is integrated.
  • the safety valve 11 and the main gas valve 12 is formed as a spring-loaded diaphragm valve, wherein the main gas valve 12 has a diaphragm 22 which carries a valve body 23 which cooperates with a spring element 24.
  • the membrane 22 of the main gas valve 11 separates a drive chamber 25 thereof from a gas outlet chamber 26.
  • the cooperating with the valve body 23 spring element 24 of the main gas valve 12 and prevailing in the gas outlet 26 gas outlet pressure press the main gas valve 12 in a closed position against the ruling in the drive chamber 25 servo pressure. In the closed state, the valve body 23 of the main gas valve 12 is pressed against a corresponding valve seat 27.
  • the drive chamber 25 and the gas discharge chamber 26 of the main gas valve 12 are according to Fig. 1 coupled via a line 28, wherein in the line 28, a diaphragm 29 is connected. Parallel to the aperture 29 engages according Fig. 1 on the line 28 of the pressure regulator 13, via which the outlet pressure of the gas control device can be adjusted.
  • the adjustment of the outlet pressure via the gas control device 13 takes place in such a way that the spring force of a spring element 31 of the pressure regulator 13 is adjusted via an adjusting screw 30, whereby the spring element 31 presses a valve body 32 of the pressure regulator 13 against a valve seat 33. Then, when the prevailing in the gas outlet 26 gas outlet pressure is too large, the valve body 32 of the pressure regulator 13 is lifted from the valve seat 33 thereof, so that a pressure compensation can be carried out to limit the outlet pressure.
  • Fig. 1 The drive chamber 17 of the safety valve 11 and the drive chamber 25 of the main gas valve 12 are coupled together by two servo valves 34, which are designed as two-way valves. Although technically a single two-way valve would be sufficient as a servo valve 34, are for safety reasons two servo valves 34 available. Both servo valves 34 are always opened or closed only together.
  • both servo valves 34 are opened, in which case a pressure equalization between the in the drive chamber 17 of the safety valve 11 and the takes place in the drive chamber 25 of the main gas valve 12 prevailing pressure. In this case, the pressure in the drive chamber 17 of the safety valve 11 decreases, so that the safety valve 11 can be opened against the spring force of the spring element 16 via the gas inlet pressure within the gas inlet chamber 18.
  • An inventive gas control device 35 shows Fig. 2 , wherein to avoid unnecessary repetition for the embodiment of Fig. 2 for the same components, the same reference numbers are used in Fig. 1 and will be discussed below only on such details, by which the embodiment of the Fig. 2 from Fig. 1 different.
  • Fig. 2 are in contrast to the embodiment of Fig. 1 the servo valves 34 are not formed as two-way valves but as three-way valves with the terminals C (Common), NC (Normally Closed) and NO (Normally Open). Then, when the servo valves 34 are closed, there is a connection between the ports C and NO, respectively. Then, on the other hand, when the servo valves 34 of the embodiment of the Fig. 2 are open, there is a connection between the terminals C and NC. In one between the two servo valves 34 of the Fig. 2 extending line 36 is an aperture 37 integrated. In the embodiment of Fig. 2 deleted in Fig. 1 in the line 28 integrated aperture 29th
  • the drive chamber 17 of the diaphragm valve designed as a safety valve 11 and the drive chamber 25 of the diaphragm valve designed as a main valve 12 are coupled together, by opening the servo valves 34, a fast pressure equalization between the two drive chambers 17, 25th can be realized so as to reduce the time required for the gas control valves 10 and 35, respectively, to release a gas flow therethrough.
  • the gas control valve 10 and 35 of the Fig. 1 or 2 serves to provide a gas flow to a gas burner, wherein a gas burner in addition to a gas flow and a combustion air flow must be provided. Then, when the gas control device 10 or 35 is used to establish a 1: 1 gas / air control, it has the further advantage that when the gas control device 10 or 35 releases the gas flow to start a gas burner, a short overshoot of the gas outlet pressure, so that a gas / air ratio shifts when starting the gas burner towards a richer gas / air mixture. As a result, the start of such a gas burner can be improved.

Description

Die Erfindung betrifft ein Gasregelgerät.The invention relates to a gas control device.

Aus der DE 198 21 853 C1 ist ein Gasregelgerät für einen Gasbrenner bekannt, welches ein Sicherheitsventil, ein Hauptgasventil und zwei Druckregler umfasst. Nach der DE 198 21 853 C1 ist ein Ausgangssteuerdruck eines ersten Druckreglers durch einen Linearantrieb einstellbar, ein zweiter Druckregler begrenzt den maximal zulässigen Druck des einem Gasbrenner zuzuführenden Gasstroms auf den Druck des dem Brenner zuzuführenden Luftstroms. Bei einer sich verändernden Gasqualität ist der Ausgangssteuerdruck des ersten Druckreglers zur Veränderung des Gasstroms unter Beibehaltung des Luftstroms einstellbar.From the DE 198 21 853 C1 For example, a gas burner gas control device is known which comprises a safety valve, a main gas valve and two pressure regulators. After DE 198 21 853 C1 an output control pressure of a first pressure regulator is adjustable by a linear drive, a second pressure regulator limits the maximum permissible pressure of the gas flow to be supplied to a gas burner to the pressure of the air flow to be supplied to the burner. With a changing gas quality, the output control pressure of the first pressure regulator for changing the gas flow while maintaining the air flow is adjustable.

Aus der WO 2008/012849 A1 , der US 5944257 A und der US 2004/055651 A1 sind mehrere Gasregelgeräte für ein Gasbrenner bekannt, die jeweils ein Sicherheitsventil, ein Hauptgasventil und ein Druckregler umfassen.From the WO 2008/012849 A1 , the US 5944257 A and the US 2004/055651 A1 Several gas control devices for a gas burner are known, each comprising a safety valve, a main gas valve and a pressure regulator.

Aus der WO 2007/060696 A1 ist ein Gasregelgerät nach dem Oberbegriff des Anspruchs 1 bekannt.From the WO 2007/060696 A1 a gas control device according to the preamble of claim 1 is known.

Der Erfindung liegt die Aufgabe zu Grunde, ein neuartiges Gasregelgerät zu schaffen. Diese Aufgabe wird durch ein Gasregelgerät mit den Merkmalen des Anspruchs 1 gelöst.The invention is based on the object to provide a novel gas control device. This object is achieved by a gas control device having the features of claim 1.

Beim erfindungsgemäßen Gasregelgerät ist sowohl das Sicherheitsventil als auch das Hauptgasventil jeweils als Membranventil ausgeführt. Die Antriebskammern dieser beiden Membranventile sind unter Zwischenschaltung von Servoventilen miteinander gekoppelt, die als Dreiwegeventil ausgebildet sind. Dann, wenn ein Gasstrom durch das Gasregelgerät bzw. durch das Sicherheitsventil und das Hauptgasventil freigegeben werden soll, werden sämtliche zwischen die Antriebskammern von Sicherheitsventil und Hauptgasventil geschalteten Servoventile geöffnet. Durch Öffnen der Servoventile wird erreicht, dass ein Druckausgleich zwischen beiden Antriebskammern erfolgt, wobei hierbei die Antriebskammer des Hauptgasventils über die Antriebskammer des Sicherheitsventils gefüllt wird. Hierdurch kann ein relativ schnelles Öffnen des Gasregelgeräts trotz Verwendung von Membranventilen realisiert werden. Mit dem erfindungsgemäßen Gasregelgerät können demnach die Öffnungszeiten von Gasregelgeräten mit Membranventilen verkürzt werden.In the gas control device according to the invention, both the safety valve and the main gas valve are each designed as a diaphragm valve. The drive chambers of these two diaphragm valves are coupled together with the interposition of servo valves, which are designed as a three-way valve. Then, when a gas flow through the gas control device or through the safety valve and the main gas valve is to be released, all connected between the drive chambers of safety valve and main gas valve servo valves are opened. By opening the servo valves is achieved that a pressure equalization between the two drive chambers takes place, in which case the drive chamber of the main gas valve is filled via the drive chamber of the safety valve. In this way, a relatively fast opening of the gas control device can be realized despite the use of diaphragm valves. Accordingly, with the gas control device according to the invention, the opening times of gas control devices with diaphragm valves can be shortened.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung.Preferred embodiments of the invention will become apparent from the dependent claims and the description below.

In der Zeichnung zeigt:

Fig. 1:
ein Blockschaltbild eines Gasregelgeräts; und
Fig. 2:
ein Blockschaltbild eines erfindungsgemäßen Gasregelgeräts.
In the drawing shows:
Fig. 1:
a block diagram of a gas control device; and
Fig. 2:
a block diagram of a gas control device according to the invention.

Fig. 1 zeigt ein Gasregelgerät 10, wobei das Gasregelgerät 10 gemäß Fig. 1 ein Sicherheitsventil 11, ein Hauptgasventil 12 und einen Druckregler 13 umfasst. Das Sicherheitsventil 11 und das Hauptgasventil 12 sind jeweils als federbeaufschlagte Membranventile ausgebildet. Fig. 1 shows a gas control device 10, wherein the gas control device 10 according to Fig. 1 a safety valve 11, a main gas valve 12 and a pressure regulator 13 comprises. The safety valve 11 and the main gas valve 12 are each formed as spring-loaded diaphragm valves.

Das als Membranventil ausgebildete Sicherheitsventil 11 umfasst eine Membran 14, die einen Ventilkörper 15 trägt und von einem Federelement 16 beaufschlagt ist. Die Membran 14 des Sicherheitsventils 11 grenzt eine Antriebskammer 17 des Sicherheitsventils 11, in welcher ein Servodruck herrscht, von einer Gaseinlasskammer 18, in welcher ein Gaseinlassdruck herrscht, ab.The safety valve 11 designed as a membrane valve comprises a membrane 14, which carries a valve body 15 and is acted upon by a spring element 16. The diaphragm 14 of the safety valve 11 delimits a drive chamber 17 of the safety valve 11, in which a servo pressure prevails, from a gas inlet chamber 18, in which a gas inlet pressure prevails.

Die Federkraft des Federelements 16 sowie der in der Antriebskammer 17 des Sicherheitsventils 11 herrschende Servodruck schließen das Sicherheitsventil 11 entgegen dem in der Gaseinlasskammer 18 herrschenden Gaseinlassdruck, wobei hierzu der Ventilkörper 15 des Sicherheitsventils 11 gegen einen Ventilsitz 19 gedrückt wird. Gemäß Fig. 1 sind die Antriebskammer 17 und die Gaseinlasskammer 18 des Sicherheitsventils 11 über eine Leitung 20 gekoppelt, wobei in die Leitung 20 eine Blende 21 integriert ist.The spring force of the spring element 16 and the prevailing in the drive chamber 17 of the safety valve 11 servo pressure close the safety valve 11 against the prevailing in the gas inlet chamber 18 gas inlet pressure, for which purpose the valve body 15 of the safety valve 11 is pressed against a valve seat 19. According to Fig. 1 the drive chamber 17 and the gas inlet chamber 18 of the safety valve 11 are coupled via a line 20, wherein in the conduit 20, a diaphragm 21 is integrated.

Ebenso wie das Sicherheitsventil 11 ist auch das Hauptgasventil 12 als federbeaufschlagtes Membranventil ausgebildet, wobei das Hauptgasventil 12 eine Membran 22 aufweist, die einen Ventilkörper 23 trägt, der mit einem Federelement 24 zusammenwirkt. Die Membran 22 des Hauptgasventils 11 trennt eine Antriebskammer 25 desselben von einer Gasauslasskammer 26 ab. In der Antriebskammer 25 des Hauptgasventils 12 herrscht ein Servodruck und in der Gasauslasskammer 26 ein Gasauslassdruck. Das mit dem Ventilkörper 23 zusammenwirkende Federelement 24 des Hauptgasventils 12 sowie der in der Gasauslasskammer 26 herrschende Gasauslassdruck drücken das Hauptgasventil 12 in eine Schließstellung entgegen dem in der Antriebskammer 25 herrschenden Servodruck. In geschlossenem Zustand wird der Ventilkörper 23 des Hauptgasventils 12 gegen einen entsprechenden Ventilsitz 27 gedrückt.As well as the safety valve 11 and the main gas valve 12 is formed as a spring-loaded diaphragm valve, wherein the main gas valve 12 has a diaphragm 22 which carries a valve body 23 which cooperates with a spring element 24. The membrane 22 of the main gas valve 11 separates a drive chamber 25 thereof from a gas outlet chamber 26. In the drive chamber 25 of the main gas valve 12 there is a servo pressure and in the gas outlet chamber 26, a gas outlet pressure. The cooperating with the valve body 23 spring element 24 of the main gas valve 12 and prevailing in the gas outlet 26 gas outlet pressure press the main gas valve 12 in a closed position against the ruling in the drive chamber 25 servo pressure. In the closed state, the valve body 23 of the main gas valve 12 is pressed against a corresponding valve seat 27.

Die Antriebskammer 25 und die Gasauslasskammer 26 des Hauptgasventils 12 sind gemäß Fig. 1 über eine Leitung 28 gekoppelt, wobei in die Leitung 28 eine Blende 29 geschaltet ist. Parallel zur Blende 29 greift gemäß Fig. 1 an der Leitung 28 der Druckregler 13 an, über den der Auslassdruck des Gasregelgeräts eingestellt werden kann. Die Einstellung des Auslassdrucks über das Gasregelgerät 13 erfolgt derart, dass über eine Einstellschraube 30 die Federkraft eines Federelements 31 des Druckreglers 13 eingestellt wird, wobei das Federelement 31 einen Ventilkörper 32 des Druckreglers 13 gegen einen Ventilsitz 33 desselben drückt. Dann, wenn der in der Gasauslasskammer 26 herrschende Gasauslassdruck zu groß wird, wird der Ventilkörper 32 des Druckreglers 13 vom Ventilsitz 33 desselben abgehoben, sodass ein Druckausgleich zur Begrenzung des Auslassdrucks erfolgen kann.The drive chamber 25 and the gas discharge chamber 26 of the main gas valve 12 are according to Fig. 1 coupled via a line 28, wherein in the line 28, a diaphragm 29 is connected. Parallel to the aperture 29 engages according Fig. 1 on the line 28 of the pressure regulator 13, via which the outlet pressure of the gas control device can be adjusted. The adjustment of the outlet pressure via the gas control device 13 takes place in such a way that the spring force of a spring element 31 of the pressure regulator 13 is adjusted via an adjusting screw 30, whereby the spring element 31 presses a valve body 32 of the pressure regulator 13 against a valve seat 33. Then, when the prevailing in the gas outlet 26 gas outlet pressure is too large, the valve body 32 of the pressure regulator 13 is lifted from the valve seat 33 thereof, so that a pressure compensation can be carried out to limit the outlet pressure.

Gemäß Fig. 1 sind die Antriebskammer 17 des Sicherheitsventils 11 und die Antriebskammer 25 des Hauptgasventils 12 durch zwei Servoventile 34 miteinander gekoppelt, die als Zweiwegeventile ausgeführt sind. Obwohl technisch ein einziges Zweiwegeventil als Servoventil 34 ausreichend wäre, sind aus Sicherheitsgründen zwei Servoventile 34 vorhanden. Beide Servoventile 34 werden immer nur gemeinsam geöffnet oder geschlossen.According to Fig. 1 The drive chamber 17 of the safety valve 11 and the drive chamber 25 of the main gas valve 12 are coupled together by two servo valves 34, which are designed as two-way valves. Although technically a single two-way valve would be sufficient as a servo valve 34, are for safety reasons two servo valves 34 available. Both servo valves 34 are always opened or closed only together.

Soll das in Fig. 1 dargestellte Gasregelgerät 10 ausgehend von einem Zustand, in welchem dasselbe einen Gasfluss sperrt, in einen Zustand überführt werden, in welcher dasselbe einen Gasfluss freigibt, so werden beide Servoventile 34 geöffnet, wobei dann ein Druckausgleich zwischen dem in der Antriebskammer 17 des Sicherheitsventils 11 und dem in der Antriebskammer 25 des Hauptgasventils 12 herrschenden Druck erfolgt. Hierbei nimmt der Druck in der Antriebskammer 17 des Sicherheitsventils 11 ab, sodass das Sicherheitsventil 11 über den Gaseinlassdruck innerhalb der Gaseinlasskammer 18 entgegen der Federkraft des Federelements 16 geöffnet werden kann.Should that be in Fig. 1 starting from a state in which the same blocks a gas flow, in a state in which it releases a gas flow, both servo valves 34 are opened, in which case a pressure equalization between the in the drive chamber 17 of the safety valve 11 and the takes place in the drive chamber 25 of the main gas valve 12 prevailing pressure. In this case, the pressure in the drive chamber 17 of the safety valve 11 decreases, so that the safety valve 11 can be opened against the spring force of the spring element 16 via the gas inlet pressure within the gas inlet chamber 18.

Hierdurch wird dann Gas von der Antriebskammer 17 des Sicherheitsventils 11 in die Antriebskammer 25 des Hauptgasventils 12 gepumpt bzw. überführt. Hierdurch wird dann innerhalb kurzer Zeit innerhalb der Antriebskammer 25 des Hauptgasventils 12 ein Servodruck aufgebaut, der zum Öffnen des Hauptgasventils 12 entgegen der Federkraft des Federelements 24 und des Gasauslassdrucks in der Gasauslasskammer 26 ausreichend ist.As a result, gas is then pumped or transferred from the drive chamber 17 of the safety valve 11 into the drive chamber 25 of the main gas valve 12. As a result, within a short time within the drive chamber 25 of the main gas valve 12, a servo pressure is built up which is sufficient to open the main gas valve 12 against the spring force of the spring element 24 and the gas outlet pressure in the gas outlet chamber 26.

Ein erfindungsgemäßes Gasregelgerät 35 zeigt Fig. 2, wobei zur Vermeidung unnötiger Wiederholungen für das Ausführungsbeispiel der Fig. 2 für gleiche Baugruppen gleiche Bezugsziffern verwendet werden, die in Fig. 1 und nachfolgend nur auf solche Details eingegangen wird, durch die sich das Ausführungsbeispiel der Fig. 2 von Fig. 1 unterscheidet.An inventive gas control device 35 shows Fig. 2 , wherein to avoid unnecessary repetition for the embodiment of Fig. 2 for the same components, the same reference numbers are used in Fig. 1 and will be discussed below only on such details, by which the embodiment of the Fig. 2 from Fig. 1 different.

Im Ausführungsbeispiel der Fig. 2 sind im Unterschied zum Ausführungsbeispiel der Fig. 1 die Servoventile 34 nicht als Zweiwegeventile sondern als Dreiwegeventile mit den Anschlüssen C (Common), NC (Normally Closed) und NO (Normally Open) ausgebildet. Dann, wenn die Servoventile 34 geschlossen sind, besteht jeweils eine Verbindung zwischen den Anschlüssen C und NO. Dann hingegen, wenn die Servoventile 34 des Ausführungsbeispiels der Fig. 2 geöffnet sind, besteht jeweils eine Verbindung zwischen den Anschlüssen C und NC. In eine zwischen den beiden Servoventilen 34 der Fig. 2 verlaufende Leitung 36 ist eine Blende 37 integriert. Im Ausführungsbeispiel der Fig. 2 entfällt die in Fig. 1 in die Leitung 28 integrierte Blende 29.In the embodiment of Fig. 2 are in contrast to the embodiment of Fig. 1 the servo valves 34 are not formed as two-way valves but as three-way valves with the terminals C (Common), NC (Normally Closed) and NO (Normally Open). Then, when the servo valves 34 are closed, there is a connection between the ports C and NO, respectively. Then, on the other hand, when the servo valves 34 of the embodiment of the Fig. 2 are open, there is a connection between the terminals C and NC. In one between the two servo valves 34 of the Fig. 2 extending line 36 is an aperture 37 integrated. In the embodiment of Fig. 2 deleted in Fig. 1 in the line 28 integrated aperture 29th

Bedingt dadurch, dass bei den Gasregelgeräten 10 bzw. 35 die Antriebskammer 17 des als Membranventil ausgebildeten Sicherheitsventils 11 und die Antriebskammer 25 des als Membranventil ausgebildeten Hauptgasventils 12 miteinander gekoppelt sind, kann durch Öffnen der Servoventile 34 ein schneller Druckausgleich zwischen den beiden Antriebskammern 17, 25 realisiert werden, um so die Zeit zu verringern, die das Gasregelventil 10 bzw. 35 benötigt, um einen Gasdurchfluss durch dasselbe freizugeben.Due to the fact that in the gas control devices 10 and 35, the drive chamber 17 of the diaphragm valve designed as a safety valve 11 and the drive chamber 25 of the diaphragm valve designed as a main valve 12 are coupled together, by opening the servo valves 34, a fast pressure equalization between the two drive chambers 17, 25th can be realized so as to reduce the time required for the gas control valves 10 and 35, respectively, to release a gas flow therethrough.

Das Gasregelventil 10 bzw. 35 der Fig. 1 bzw. 2 dient der Bereitstellung eines Gasstroms zu einem Gasbrenner, wobei einem Gasbrenner neben einem Gasstrom auch ein Verbrennungsluftstrom bereitgestellt werden muss. Dann, wenn das Gasregelgerät 10 bzw. 35 zur Etablierung einer 1:1 Gas/LuftRegelung verwendet wird, verfügt dasselbe über den weiteren Vorteil, dass dann, wenn das Gasregelgerät 10 bzw. 35 zum Starten eines Gasbrenners den Gasdurchfluss freigibt, sich ein kurzes Überschießen des Gasauslassdrucks einstellt, sodass sich ein Gas/Luft-Verhältnis beim Starten des Gasbrenners in Richtung auf ein reicheres Gas/Luft-Gemisch verschiebt. Hierdurch kann der Start eines solchen Gasbrenners verbessert werden.The gas control valve 10 and 35 of the Fig. 1 or 2 serves to provide a gas flow to a gas burner, wherein a gas burner in addition to a gas flow and a combustion air flow must be provided. Then, when the gas control device 10 or 35 is used to establish a 1: 1 gas / air control, it has the further advantage that when the gas control device 10 or 35 releases the gas flow to start a gas burner, a short overshoot of the gas outlet pressure, so that a gas / air ratio shifts when starting the gas burner towards a richer gas / air mixture. As a result, the start of such a gas burner can be improved.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
GasregelgerätGas Regulator
1111
Sicherheitsventilsafety valve
1212
HauptgasventilMain gas valve
1313
Druckreglerpressure regulator
1414
Membranmembrane
1515
Ventilkörpervalve body
1616
Federelementspring element
1717
Antriebskammerdrive chamber
1818
GaseinlasskammerGas inlet chamber
1919
Ventilsitzvalve seat
2020
Leitungmanagement
2121
Blendecover
2222
Membranmembrane
2323
Ventilkörpervalve body
2424
Federelementspring element
2525
Antriebskammerdrive chamber
2626
Gasauslasskammergas outlet
2727
Ventilsitzvalve seat
2828
Leitungmanagement
2929
Blendecover
3030
Einstellschraubeadjustment
3131
Federelementspring element
3232
Ventilkörpervalve body
3333
Ventilsitzvalve seat
3434
Servoventilservo valve
3535
GasregelgerätGas Regulator
3636
Leitungmanagement
3737
Blendecover

Claims (1)

  1. Gas control device, having a safety valve (11), a main gas valve (12) and a pressure regulator (13), the safety valve (11) being configured as a diaphragm valve with a gas inlet chamber (18) and a drive chamber (17), the main gas valve (12) being configured as a diaphragm valve with a drive chamber (25) and a gas outlet chamber (26), which diaphragm valve is adapted to close or to open due to the spring force of a spring element (24) and a gas outlet pressure which prevails in the gas outlet chamber (26), counter to a servo pressure which prevails in the drive chamber (25), and the drive chamber (17) of the safety valve (11) and the drive chamber (25) of the main gas valve (12) being coupled to one another with at least one servo valve (34) being connected in between, the or each servo valve (34) being configured to open in order to enable a gas stream through the safety valve (11) and the main gas valve (12) and to close in order to shut off the gas stream through the safety valve (11) and the main gas valve (12), and the drive chamber (25) of the main gas valve (12) and the gas outlet chamber (26) being coupled via a line (28), into which the pressure regulator (31) is connected, the safety valve (11) being adapted to close in a manner which is assisted by the spring force of a spring element (16) and in a manner which is assisted by a servo pressure which prevails in the drive chamber (17), counter to a gas inlet pressure which prevails in the gas inlet chamber (16), and to open in a manner which is assisted by the gas inlet pressure which prevails in the gas inlet chamber (16), counter to the spring force of the spring element (16) and counter to the servo pressure which prevails in the drive chamber (17), characterized in that
    the gas inlet chamber (18) and the drive chamber (17) of the safety valve (11) are coupled via a line (20), into which an orifice (21) is integrated,
    two servo valves (34) which are configured as three-way valves are connected between the line (20), via which the gas inlet chamber (18) and the drive chamber (17) of the safety valve (11) are coupled, and the line (28), via which the drive chamber (25) of the main gas valve (12) and the gas outlet chamber (26) are coupled, namely in such a way that
    a first three-way valve (34) acts by way of its "Common" and "Normally Opened" connectors on the line (20), via which the gas inlet chamber (18) and the drive chamber (17) of the safety valve (11) are coupled, namely parallel to the orifice (21) which is integrated into said line (20),
    a second three-way valve (34) acts by way of its "Normally Opened" connector on the pressure regulator (31) and by way of its "Common" connector on the line (28), via which the drive chamber (25) of the main gas valve (12) and the gas outlet chamber (26) are coupled,
    the two three-way valves (34) are coupled via a line (36) which extends between the "Normally Closed" connectors thereof and into which an orifice (37) is integrated.
EP09005857.9A 2008-05-23 2009-04-28 Gas regulator Active EP2123979B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008024843A DE102008024843A1 (en) 2008-05-23 2008-05-23 Gas Regulator

Publications (3)

Publication Number Publication Date
EP2123979A2 EP2123979A2 (en) 2009-11-25
EP2123979A3 EP2123979A3 (en) 2014-08-27
EP2123979B1 true EP2123979B1 (en) 2019-06-05

Family

ID=40990111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09005857.9A Active EP2123979B1 (en) 2008-05-23 2009-04-28 Gas regulator

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EP (1) EP2123979B1 (en)
DE (1) DE102008024843A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022183429A1 (en) 2021-03-04 2022-09-09 Pittway Sarl Partially-premixed gas burner appliance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040055651A1 (en) * 2002-07-18 2004-03-25 Baarda Gerrit Jan Gas flow control
WO2007060696A1 (en) * 2005-11-23 2007-05-31 Sit La Precisa S.P.A. Device for controlling the delivery of a combustible gas to a burner apparatus

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Publication number Priority date Publication date Assignee Title
JPH01174819A (en) * 1987-12-28 1989-07-11 Yamatake Honeywell Co Ltd Flow control valve for gas
EP0644377B1 (en) * 1993-09-16 1996-10-23 Honeywell B.V. Control device for gas burners
DE4337703C1 (en) * 1993-11-05 1995-03-23 Dungs Karl Gmbh & Co Multiple actuating device with regulator on the inlet side
DE4343306A1 (en) * 1993-12-17 1995-06-22 Gastechnic Prod Vertriebges Gas pipeline pressure regulation system
US5944257A (en) * 1996-11-15 1999-08-31 Honeywell Inc. Bulb-operated modulating gas valve with minimum bypass
DE19821853C1 (en) 1998-05-15 1999-07-29 Honeywell Bv Regulator for gas burner
CN101501382B (en) * 2006-07-28 2012-05-23 意大利精密机械技术股份公司 A device for controlling the delivery of a combustible gas to a burner apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040055651A1 (en) * 2002-07-18 2004-03-25 Baarda Gerrit Jan Gas flow control
WO2007060696A1 (en) * 2005-11-23 2007-05-31 Sit La Precisa S.P.A. Device for controlling the delivery of a combustible gas to a burner apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022183429A1 (en) 2021-03-04 2022-09-09 Pittway Sarl Partially-premixed gas burner appliance

Also Published As

Publication number Publication date
EP2123979A2 (en) 2009-11-25
DE102008024843A1 (en) 2009-11-26
EP2123979A3 (en) 2014-08-27

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