EP0728990A1 - Gasventil für einen elektronisch gesteuerten Badgasbrenner ohne permanente Zündflamme - Google Patents

Gasventil für einen elektronisch gesteuerten Badgasbrenner ohne permanente Zündflamme Download PDF

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Publication number
EP0728990A1
EP0728990A1 EP96400288A EP96400288A EP0728990A1 EP 0728990 A1 EP0728990 A1 EP 0728990A1 EP 96400288 A EP96400288 A EP 96400288A EP 96400288 A EP96400288 A EP 96400288A EP 0728990 A1 EP0728990 A1 EP 0728990A1
Authority
EP
European Patent Office
Prior art keywords
gas
valve
burner
membrane
ignition
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.)
Withdrawn
Application number
EP96400288A
Other languages
English (en)
French (fr)
Inventor
Michel Spaeth
Régis Cazin
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.)
Saunier Duval Eau Chaude Chauffage SDECC SA
Original Assignee
Saunier Duval Eau Chaude Chauffage SDECC SA
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 Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0728990A1 publication Critical patent/EP0728990A1/de
Withdrawn legal-status Critical Current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
    • F23N1/007—Regulating fuel supply using mechanical means
    • 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
    • F23N1/085—Regulating fuel supply conjointly with another medium, e.g. boiler water using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/22—Pilot burners
    • F23N2227/24—Pilot burners the pilot burner not burning continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/28—Ignition circuits
    • F23N2227/30—Ignition circuits for pilot burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/36—Spark ignition, e.g. by means of a high voltage
    • 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
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/20—Membrane 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
    • F23N2235/22—Fuel valves cooperating with magnets
    • 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
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods

Definitions

  • the invention relates to a gas bath heater without permanent pilot light with electronic control and more specifically relates to its gas mechanism associated with a magnetic nozzle for holding the gas inlet valve to the burner in the open position.
  • a control and safety device consisting on the one hand of a water valve which acts on a first valve disposed at the inlet of the supply line in gas and on the other hand a valve controlled by the pressure of the gas which controls a second valve.
  • This valve is mechanically controlled by a membrane, one of the faces of which is permanently subjected to the pressure of the outside air and the other of which can be subjected to the pressure of the gas taken upstream of the control valve through another small valve controlled by a thermosensitive device with low inertia which detects the ignition of an ignition burner.
  • This detection device capable of reacting to the extinction of the ignition burner stops the admission of gas to the main burner.
  • the manometric capsule system consisting of a small sealed enclosure or bulb filled with air, placed in the flame that is to be detected and of a capillary tube, connected to a nozzle closed by a small expandable membrane which swells under the effect of the expansion of the air in the bulb and can operate a valve.
  • the Applicant has therefore endeavored to find a solution adapted to this device, which considerably reduces the electrical consumption and makes it possible to increase the lifespan of the batteries.
  • a main object of the present invention therefore consists of a gas mechanism for a gas bath heater without a permanent pilot light comprising an ignition electrode and a flame detector near an ignition burner, as well as a control unit.
  • a gas mechanism for a gas bath heater without a permanent pilot light comprising an ignition electrode and a flame detector near an ignition burner, as well as a control unit.
  • a membrane acting on a gas inlet valve to the burner membrane delimiting two chambers in the control unit, one of which is placed in communication with the gas inlet chamber upstream of the inlet valve, during the opening of a small valve recalled by a spring, the operating member of the small valve connecting a chamber with the gas intake pipe, being controlled by an electronic unit which also controls the ignition of the burner d ignition, as a function of the control provided by the flame detector, mechanism by which the membrane of the control unit is connected to a magnetic tip ensuring the maintenance of said membrane in p opening position of the gas inlet valve to the burner, under the control of the housing electronic.
  • the magnetic tip is placed in a well provided under the control unit and cooperates with a metal pad mounted at the end of the connecting rod between the intake valve and the membrane.
  • a first gas distribution chamber 28 is provided between the inlet duct and the intake chamber.
  • a first main valve 4 closes the gas at the entrance to this chamber 28. It is operated in the conventional manner by a water valve 5.
  • the valve 4 is integral with a profiled control valve 29 which can be moved inside an orifice 30 connecting the chambers 28 and 2.
  • a return spring 31 maintains the assembly in the position shown in the figure.
  • a burner valve 6 closes the gas inlet to the manifold 3.
  • the valve 6 is part of a movable assembly consisting of a vertical rod 7 recalled by a spring 16 connected to the membrane 8 of a control unit 9 divided into two chambers 10 and 11 by said membrane.
  • the upper chamber 11 communicates via a conduit 12 with the distribution chamber 28.
  • the lower chamber 10 is in communication with said conduit 12 and therefore with the distribution chamber, via a passage orifice 13 closed by a small valve 14 operated by an electromagnet 15 against the return force of a spring not shown.
  • the lower chamber 10 is also connected, by means of a supply channel 19, to an ignition burner 20. The latter is ignited by a ignition electrode 21. The flame is detected by a flame detection electrode 22.
  • a well 17 serving as a housing with magnetic tip 18.
  • a metal pad 25 mounted at the end of the rod 7. The pad is therefore integral with the movements of the membrane and can s 'apply to the nozzle.
  • the mechanism thus described is electronically controlled by an electronic unit 23 to which the electromagnet 15 is connected by a connection circuit 24. Similarly, it is connected to the magnetic end piece 18 by the circuit 26.
  • a flow detector shown diagrammatically at 27 allows the power supply of the electronic unit. The latter is also connected to the ignition electrode 21 and the flame detection electrode 22. The latter is placed both on the ignition burner 20 and the main burner ramp 3.
  • the electrode 22 is an ionization detection electrode based on the fact that the flame can be assimilated to a diode. An AC current source is then filtered, the filtered signal then being processed by a control interface which authorizes the opening of the valve.
  • This system can have a response time much lower than current mechanical systems and also has the advantage of being able to manage other safeties.
  • the electronic unit therefore authorizes the operation of such a type of detector.
  • the water membrane 5 When water is drawn by a user, the water membrane 5 lifts in the direction of the small arrows and opens the main valve 4 against its return spring. The gas then occupies the distribution chamber 28 and the intake chamber 2, but it is stopped by the valve 6 applied against its seat by the spring 16. On the other hand, it can penetrate into the chamber 10, the valve 14 being in open position. The gas therefore passes through the supply channel 19 and feeds the ignition burner 20.
  • the flow detector 27 which has picked up the drawing request supplies the housing electronic 23 authorizing a train of sparks via the timed ignition electrode 21.
  • the ignition burner 20 ignites and the flame detection electrode 22 controls the electrical supply to the electromagnet 15 The latter being excited closes the valve 14 which interrupts the admission of gas to the chamber 10.
  • the gas pressure in the chamber 11 is no longer compensated by that of the chamber 10, the membrane 8 will move towards the bottom and open the valve 6 by means of the rod 7 against the return force of the spring 16.
  • the gas can therefore reach the burner ramp 3 and it ignites on contact with the ignition burner 20
  • the membrane 8 being in the low position, the patch 25 will come to sticking against the magnetic tip 18 and it is this which will therefore keep the valve 6 in the open position.
  • the electromagnet 15 is therefore only ordered to close at the start of each drawing for a very short time at the end of which it is the magnetic tip 18 which is supplied until the drawing is completed. This sequencing of commands allows an appreciable gain in electricity consumption and therefore a longer battery life.
  • valve 4 closes and in parallel the flow detector 27 opens and cuts the electrical supply to the electronic unit 23.
  • the magnetic tip 18 is no longer supplied and releases the tablet 25 this which allows the spring 16 to close the main valve 6, thereby interrupting the supply of gas to the burner.
  • the device also makes it possible to stop the device, during drawing, as soon as there is an operating anomaly, for example a backflow, an overheating, etc. which cause the power supply to the electronic unit to be cut off. and consequently shutting down the device.
  • an operating anomaly for example a backflow, an overheating, etc. which cause the power supply to the electronic unit to be cut off. and consequently shutting down the device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
EP96400288A 1995-02-21 1996-02-13 Gasventil für einen elektronisch gesteuerten Badgasbrenner ohne permanente Zündflamme Withdrawn EP0728990A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9501970A FR2730794B1 (fr) 1995-02-21 1995-02-21 Mecanisme gaz pour chauffe-bains a gaz sans veilleuse permanente a commande electronique
FR9501970 1995-02-21

Publications (1)

Publication Number Publication Date
EP0728990A1 true EP0728990A1 (de) 1996-08-28

Family

ID=9476344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96400288A Withdrawn EP0728990A1 (de) 1995-02-21 1996-02-13 Gasventil für einen elektronisch gesteuerten Badgasbrenner ohne permanente Zündflamme

Country Status (2)

Country Link
EP (1) EP0728990A1 (de)
FR (1) FR2730794B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126218A3 (de) * 2000-02-15 2003-09-24 Hans-Jochen Dr. Schwarz Gasventil und Feuerungsautomat für Gasbrenner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006658A1 (de) * 1969-02-14 1970-09-03 Society Saunier Duval S.A., Paris Vorrichtung zur Überwachung des Druckabfalls und Unterbrechung der Gaszufuhr an schnellbeheizten Warmwasserspeichern und Badeöfen
EP0240394A1 (de) * 1986-03-06 1987-10-07 Chaffoteaux & Maury Wasser- oder Badgasbrenner
FR2618527A1 (fr) * 1987-07-20 1989-01-27 Gaz De France Dispositif de regulation sequentielle de l'alimentation en combustible gazeux d'un generateur de chaleur
DE8901428U1 (de) * 1988-02-08 1989-03-23 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Durchlaufwasserheizer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2006658A1 (de) * 1969-02-14 1970-09-03 Society Saunier Duval S.A., Paris Vorrichtung zur Überwachung des Druckabfalls und Unterbrechung der Gaszufuhr an schnellbeheizten Warmwasserspeichern und Badeöfen
EP0240394A1 (de) * 1986-03-06 1987-10-07 Chaffoteaux & Maury Wasser- oder Badgasbrenner
FR2618527A1 (fr) * 1987-07-20 1989-01-27 Gaz De France Dispositif de regulation sequentielle de l'alimentation en combustible gazeux d'un generateur de chaleur
DE8901428U1 (de) * 1988-02-08 1989-03-23 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Durchlaufwasserheizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1126218A3 (de) * 2000-02-15 2003-09-24 Hans-Jochen Dr. Schwarz Gasventil und Feuerungsautomat für Gasbrenner

Also Published As

Publication number Publication date
FR2730794A1 (fr) 1996-08-23
FR2730794B1 (fr) 1997-04-25

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