EP1528320B1 - Armature à gaz - Google Patents

Armature à gaz Download PDF

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Publication number
EP1528320B1
EP1528320B1 EP04024721A EP04024721A EP1528320B1 EP 1528320 B1 EP1528320 B1 EP 1528320B1 EP 04024721 A EP04024721 A EP 04024721A EP 04024721 A EP04024721 A EP 04024721A EP 1528320 B1 EP1528320 B1 EP 1528320B1
Authority
EP
European Patent Office
Prior art keywords
valve
gas
gas valve
ignition
hydraulically controlled
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.)
Expired - Lifetime
Application number
EP04024721A
Other languages
German (de)
English (en)
Other versions
EP1528320A1 (fr
Inventor
Thomas Schmidbauer
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.)
Vaillant GmbH
Original Assignee
Vaillant 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 Vaillant GmbH filed Critical Vaillant GmbH
Priority to PL04024721T priority Critical patent/PL1528320T3/pl
Priority to SI200431642T priority patent/SI1528320T1/sl
Publication of EP1528320A1 publication Critical patent/EP1528320A1/fr
Application granted granted Critical
Publication of EP1528320B1 publication Critical patent/EP1528320B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • 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
    • F23N2235/18—Groups of two or more valves

Definitions

  • the invention relates to a hydraulic regulated gas valve for a fuel gas heated continuous water heater.
  • Such gas fittings are characterized in that they adjust the amount of fuel gas that reaches a burner depending on the amount of water to be heated and a knob.
  • an amplification factor fuel gas volume flow to water volume flow
  • Such fittings are made, for example EP 1 353 126 A and from DE 4 316 779 A known.
  • these gas fittings must have at least two sealing valves which have different control signals.
  • the ionization current in a flame or a thermoelectric voltage caused by the flame is used as a control signal. If a flame is present on the burner surface, an ionization current can be detected in the area of the flame. With this ionization current, a valve, the safety valve, can be opened by means of a coil.
  • the other sealing valve is usually the water shortage valve. In this valve, a stroke equivalent to the water volume flow is generated in a water switch. By means of this lifting movement, the water shortage valve can be opened and thus a fuel gas equivalent to the water volume flow can flow through the gas fitting.
  • gas valves often have a valve with which an amplification factor between the fuel gas volume flow and the water volume flow can be set. This adjustment is usually done manually by the operator, who often uses a rotary knob and diverter to continuously open or close a linear valve. As a result, the outlet temperature of the continuous water heater is changed.
  • Gas fittings for fuel gas heated continuous water heaters are usually relatively complex, since the various functions are achieved by a mechanism with many deflections.
  • the aim of the invention is to provide a gas valve for fuel gas heated continuous water heater, which is characterized by simple and reliable structure.
  • the ignition gas guide and seal should be simplified.
  • the fuel gas is passed to the pilot gas valve through the interior of the main gas valve. Since this is sealed from the environment, small leaks would not result in fuel gas leakage into the environment.
  • the ignition gas is passed through the same guide as the mechanical actuating mechanism of the safety valve.
  • existing holes and cavities are used twice.
  • Another advantage of an advantageous embodiment of the invention is according to claim 5, that the gas valve at the factory setting or on site without installation of an additional throttle by an existing, from the outside - to compensate for manufacturing tolerances and to different performance variables, network pressures and gas types - adjustable valve can be adjusted.
  • the elimination of an additional throttle the pressure drop of the gas valve is kept to a minimum.
  • the nominal power and the partial load can be adjusted.
  • only a universal power preselector valve is installed, which in the case of a gas type change at the customer no longer needs to be removed and replaced. This can save costs and the device is much more attractive for the customer due to the increased flexibility.
  • the power preselector valve cone is infinitely and sensitively displaceable and thus adjustable. This is possible because a Axialschalt consultancy can move on a shaft by turning the adjusting screw via a clamp.
  • the adjusting screw is located coaxially with the gas control mechanism directly behind the gas button, so that its action is self-explanatory.
  • Fig. 1 to Fig. 16 the gas valve according to the invention in various operating situations and details thereof.
  • FIG. 1 shows the gas valve according to the invention in the diagonal plan view with the control knob 1 at the front, the side receiving bore 43 for the water switch, the rear gas inlet 44, the also rear thermomagnet 48, the gas outlet 45 to the burner, the measuring nipple 47 for measuring the inlet pressure, the Measuring nipple 39 for measuring the burner pressure and the ignition gas outlet 26.
  • the FIGS. 2a and 2b show the gas valve according to the invention from other perspectives also in diagonal plan view.
  • FIG. 3 shows the gas valve according to the invention in section A - A according to FIG. 1 ,
  • the gas valve is in the initial state, in which no fuel gas flows.
  • the control knob 1 is in the starting position.
  • the safety valve 2 with the thermomagnet 48, the Zündgasventil 3, the main gas valve 4 for power selection, which includes a buttervorinesventilteller 23, and the water shortage valve 5, not in FIG. 3 but in eg FIG. 8 can be seen, are closed.
  • the gas inlet 44 which is in FIG. 3 can not be seen, fuel gas is on the left in front of the safety valve 2.
  • FIG. 4 is brought by turning counterclockwise the control knob 1 counterclockwise, the gas valve in the ignition position.
  • the rotational movement of the control knob 1 is transmitted to a radial contact piece 10.
  • the radial contact piece 10 has a control cam 21 (see. FIG. 14 ), whereby the radial increase of the control cam 21 causes a counterclockwise rotation of the Zündgasventiltellers 11 against the spring 12 in a rotational movement.
  • a Zündgasfilter 13 is slightly compressed.
  • a flat gasket 14 lifts off from a Zündgasventilsitz 15.
  • FIG. 5 shows that in the next operating step, the control knob 1 is pressed with the shaft 6 against the spring 16.
  • the adjusting screw 8, the bracket 17 (see also Fig. 15 ), the radial switch 10, the pin 7 and a Axialschalt choir 9 are also moved.
  • the pin 7 strikes the valve plate 18 of the thermomagnet 48 and lifts against the pressure of the spring 49, the gasket 19 from the valve seat 20 from.
  • the fuel gas can now flow through a gap 22 centrally through the power preselector valve plate 23 into the chamber 24. From there, the fuel gas through the gap 25, the path via the Zündgasfilter 13 to Zündgasausgang 26th
  • the ignition gas burner can now be ignited. After the ignition gas has been ignited at the pilot gas burner, a thermal current can be tapped from the flame after a short waiting time. This thermo-current is passed to the thermomagnet 48, whereby the thermomagnet 48 pulls the valve plate 18 to the thermomagnet 48 against the spring 49.
  • the control knob 1 can now be released by the operator. As a result, slide the parts control knob 1, shaft 6, Radialschalt Science 10, adjusting screw 8, bracket 17, Axialschalt fabrics 9 and pin 7 due to the force of the spring 16 back to the starting position. The ignition gas continues to flow.
  • the Axialschalthggse 27 Since sliding blocks 28 of the Axialschalthggse 27 (see. Fig. 16 ) sitting in longitudinally extending grooves in the housing 30, only axial movement of the Axialschalthggse 27 is possible.
  • the Axialschalthggse 27 has a locking lug 29 (see. Fig. 16 ), which with the switching cam 31 or the notches 32 of the rotating Axialschalt Sharings 9 (see. Fig. 15 ) is in contact.
  • the latching lug 29 (see. Fig. 16 ) slides along the switching cam 31 (cf. Fig.
  • FIG. 6 shows the position of the power selector valve plate 23 for the lowest power level
  • FIG. 7 the state in which the control knob 1 has been rotated via intermediate positions to the highest power level in the counterclockwise direction, whereby the locking lug 29 engages in the last notch 32 of the Axialschal Switzerlands 9.
  • the power preselector valve plate 23 now releases the maximum flow cross section.
  • the Figures 10 and 11 illustrate the adaptation of the main gas valve 4 to different manufacturing tolerances, performance variables, different network pressures and fuel gas types.
  • control knob 1 To adjust the control knob 1 is rotated in a defined level and then subtracted. By the tap of water, the device is started, while the burner pressure by measuring the pressure measuring nipple 39 (see. Fig. 1 ) is continuously measured.
  • the spring 16 acts in two ways (previous systems use for this purpose two springs): Once during the ignition, when the control knob 1 is pressed against the spring 16, and then upon release of the knob 1 so that the mechanism with shaft and button is reset , On the other hand, when opening and closing the power selector valve plate 23.
  • the adjustment is sensitive and infinitely variable.
  • the dynamic seal ( Fig. 3 ) between shaft 6 and housing is stressed axially only during the ignition process. Screwing movements do not occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Glass Compositions (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Claims (5)

  1. Raccord de gaz à régulation hydraulique pour un chauffe-eau rapide chauffé au gaz comprenant une soupape de sûreté (2), une soupape de gaz d'allumage (3), une soupape de gaz principale (4) pour le réglage du gain qui définit le rapport entre courant volumique de gaz de combustion et courant volumique d'eau, caractérisé en ce que la soupape de gaz principale (4) se compose au moins d'une tête de soupape à présélection de puissance (23) et d'un siège de soupape (34) et que le guidage du gaz de combustion de la soupape de sûreté (2) vers la soupape de gaz d'allumage (3) s'effectue à travers l'intérieur de la tête de soupape à présélection de puissance (23).
  2. Raccord de gaz à régulation hydraulique selon la revendication 1, caractérisé en ce que le guidage d'un dispositif d'actionnement mécanique pour ouvrir la soupape de sûreté (2) en vue de démarrer un brûleur d'allumage s'effectue également à travers l'intérieur de la d'une tête de soupape à présélection de puissance (23).
  3. Raccord de gaz à régulation hydraulique selon la revendication 1 ou 2, caractérisé en ce que la soupape de gaz d'allumage (3) est ouverte et fermée par la rotation d'une pièce de contact radiale (10) avec une came de commande (21) qui pousse ou non une tête de soupape de gaz d'allumage (11) hors d'un siège de soupape de gaz d'allumage (15) en fonction de la position de rotation.
  4. Raccord de gaz à régulation hydraulique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'actionnement mécanique de la soupape de sûreté (2), de la soupape de gaz d'allumage (3) et de la soupape de gaz principale (4) est amorcé par un mouvement de rotation d'un bouton de réglage (1).
  5. Raccord de gaz à régulation hydraulique selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la tête de soupape de gaz d'allumage (11) peut être coulissée axialement de manière directe ou indirecte par le biais d'une vis de réglage (8).
EP04024721A 2003-10-31 2004-10-16 Armature à gaz Expired - Lifetime EP1528320B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04024721T PL1528320T3 (pl) 2003-10-31 2004-10-16 Armatura gazowa
SI200431642T SI1528320T1 (sl) 2003-10-31 2004-10-16 Ventil za plin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10351723 2003-10-31
DE10351723 2003-10-31

Publications (2)

Publication Number Publication Date
EP1528320A1 EP1528320A1 (fr) 2005-05-04
EP1528320B1 true EP1528320B1 (fr) 2011-03-02

Family

ID=34399683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04024721A Expired - Lifetime EP1528320B1 (fr) 2003-10-31 2004-10-16 Armature à gaz

Country Status (8)

Country Link
EP (1) EP1528320B1 (fr)
AT (1) ATE500470T1 (fr)
DE (1) DE502004012249D1 (fr)
DK (1) DK1528320T3 (fr)
ES (1) ES2359701T3 (fr)
PL (1) PL1528320T3 (fr)
PT (1) PT1528320E (fr)
SI (1) SI1528320T1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316779A1 (de) * 1992-06-24 1994-11-24 Mertik Maxitrol Gmbh & Co Kg Gasmengensteuerung, insbesondere für eine Armatur eines Durchlauf-Wassererhitzers
DE10315543A1 (de) * 2002-04-11 2003-10-30 Vaillant Gmbh Hydraulisch geregelte Gasarmatur

Also Published As

Publication number Publication date
PT1528320E (pt) 2011-04-18
DE502004012249D1 (de) 2011-04-14
EP1528320A1 (fr) 2005-05-04
SI1528320T1 (sl) 2011-05-31
DK1528320T3 (da) 2011-06-14
ATE500470T1 (de) 2011-03-15
ES2359701T3 (es) 2011-05-26
HK1074665A1 (en) 2005-11-18
PL1528320T3 (pl) 2011-07-29

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