EP0023870A1 - Sicherheitssteuervorrichtungen für Gasventile - Google Patents

Sicherheitssteuervorrichtungen für Gasventile Download PDF

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Publication number
EP0023870A1
EP0023870A1 EP80401137A EP80401137A EP0023870A1 EP 0023870 A1 EP0023870 A1 EP 0023870A1 EP 80401137 A EP80401137 A EP 80401137A EP 80401137 A EP80401137 A EP 80401137A EP 0023870 A1 EP0023870 A1 EP 0023870A1
Authority
EP
European Patent Office
Prior art keywords
contactor
valve
excitation
period
gate
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
EP80401137A
Other languages
English (en)
French (fr)
Other versions
EP0023870B1 (de
Inventor
Bernard Vergne
Claude Dauget
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.)
Chaffoteaux et Maury SAS
Original Assignee
Chaffoteaux et Maury SAS
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 Chaffoteaux et Maury SAS filed Critical Chaffoteaux et Maury SAS
Priority to AT80401137T priority Critical patent/ATE12682T1/de
Publication of EP0023870A1 publication Critical patent/EP0023870A1/de
Application granted granted Critical
Publication of EP0023870B1 publication Critical patent/EP0023870B1/de
Expired 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
    • F23N5/00—Systems for controlling combustion
    • F23N5/20—Systems for controlling combustion with a time programme acting through electrical means, e.g. using time-delay relays
    • 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

Definitions

  • the invention relates to devices for the controlled control of the opening and closing of a fuel gas valve, supplying in particular a water heater burner, bath heater or central heating boiler with hot water, front control automatically results in the closure of said valve after a predetermined delay T 0 consecutive to its opening if the pressurized gas supplied by this valve has not been ignited in the meantime.
  • control devices of the type in question according to the invention are essentially characterized in that the studs which are connected by each of the contacts of the second relay contactor when the electrical supply of the valve is ensured through them, are, as long as the first contactor does is not energized, connected in series with a rectified or continuous voltage source mounted in the opposite direction so that, if one of these contacts is not in its rest position before the effective ignition of the gas, a short -circuit is automatically created, blowing up a protective circuit breaker element.
  • the invention includes, apart from these main provisions, certain other provisions which are used preferably read at the same time and which will be more explicitly discussed below.
  • the single figure of this drawing shows, very schematically, a fuel gas valve control device established in accordance with the invention.
  • the valve 1 to be controlled is suitable for distributing a pressurized combustible gas to the burner of a combustible gas appliance such as in particular a water heater, a bath heater or a central heating boiler with hot water.
  • a combustible gas appliance such as in particular a water heater, a bath heater or a central heating boiler with hot water.
  • This closure is itself subject to the circulation of water in the heating body of the gas appliance, circulation due to the drawing of hot water (in the case of water heaters or bath heaters) or to the in operation of a circulation pump 4 (case of central heating boilers): for this purpose, a vacuum created by this circulation is exploited by a differential valve system to actuate said switch 3.
  • valve 1 As soon as valve 1 is opened, it distributes a pressurized combustible gas to the appliance burner.
  • a flame detector 6 is therefore provided for. check whether the ignition in question is effective or not and it is only in the case where this ignition is obtained before the expiration of the period T that means controlled by the output of this detector maintain the electrical supply of the valve 1: delay means or the like are provided to stop the application of the voltage V on the valve, due to the simple excitation of the contactor 2, at the end of the period T.
  • the invention aims to ensure the total positive security of such an assembly in the sense that any failure automatically results in the closing of the valve.
  • the means controlled by the output of the flame detector 6 themselves comprise a second relay contactor 7 which is also suitable for applying a continuous or rectified voltage V 'to the valve 1 suitable for opening this valve, voltage having the same amplitude than the voltage V, but possibly generated in a different way.
  • this voltage V ' is that W generated by the network or sector 8 (generally known as an alternating voltage of amplitude 220 volts) and rectified through a unidirectional member 9 such as a diode.
  • this unidirectional member and those of the same kind will be designated hereinafter by the term “diode”, but this in a nonlimiting manner, all other unidirectional members or rectifiers which may also be envisaged to constitute them) .
  • the voltage V meanwhile, could be in _ gendré analogously to the voltage V 'through an appropriate time delay device.
  • this triggering is not caused by simulation of a flame, that is to say by emission of an electrical signal falsely produced by the detector 6 even before the opening of the valve 1.
  • the first contact 7 1 is connected to the terminals of the sector 8 through a resting contact 2 1 of the contactor 2 and two diodes 15 and 16 in series, both mounted in the opposite direction to the diode 9, the diode 15 being furthermore mounted in parallel on valve 1.
  • the second contact 7 2 As for the second contact 7 2 , it is connected to the terminals of the sector 8 through also the contact 2 1 at rest and two other diodes 17 and 18 also connected in series and in the opposite direction to the diode 9.
  • the second contactor 7 When starting the installation, while the first contactor 2 is still at rest, the second contactor 7 must also be, the excitation of the latter being provided only after ignition of the gas distributed by the valve 1 , then detection of this ignition at 6, which supposes that said valve is opened by the excitation of the first contactor 2.
  • a repairer must then be called in to restart the installation after locating and eliminating the fault.
  • the control which has just been described can be carried out immediately after closing of the general switch 19 or after closing of the switch 3, but before tripping of the first contactor 2, a small re late t, for example of the order of a second, being advantageously provided for this purpose between these last two commands.
  • a diode 20, mounted in parallel on the capacitor 10, in the same direction as the diode 15, makes it possible to detect, by breaking the fuse 14, an undesirable "sticking" of the contact 2 2 of the contactor 2 in its working position through the succession of the following components: diode 11, contact 7 1 at work, diode 16 and contact 2 1 at rest.
  • valve 1 has been closed at the end of the period T which is shorter than the period T 1 and begins at the same time as the latter, but the installation remains energized: it must then be disconnected and triggered an alert to make an external intervention necessary to repair the fault (which may be due to a phenomenon other than an ignition fault, for example a lack of gas).
  • a circuit breaker 21 is provided for this purpose, in particular of the thermal or timed type, having the same role as the fuse 14 above and the sensitive element of which (at temperature or time) is supplied as soon as the first contactor 2 is tripped. from sector 8 through contact 2 1 at work, a diode 22 and contact 7 2 at rest.
  • the coil of contactor 2 is electrically energized, under the control of switch 3, from the secondary of a transformer 23 whose primary is supplied by sector 8.
  • This supply is carried out through an opto-electronic barrier member shown diagrammatically in the drawing by a photothyristor 24, the door of which is connected to a resistor 25.
  • This barrier can only be removed if the photosensitive element 24 is lit from a lamp 26, such as a photoluminescent diode, which lamp can only be supplied electrically, from the sector, only through the element. sensitive of the circuit breaker 21, and also through the diode 22 and the contact 7 2 at rest.
  • a lamp 26 such as a photoluminescent diode, which lamp can only be supplied electrically, from the sector, only through the element. sensitive of the circuit breaker 21, and also through the diode 22 and the contact 7 2 at rest.
  • This optical coupling between the lamp 26 and the photosensitive element 24, shown diagrammatically by the broken arrow 0 makes it possible to selectively and surely transmit an instruction from a medium voltage circuit (220 Volts) to a low voltage circuit (for example 24 Volts), without causing any disturbance to these circuits.
  • the first contactor 2 can only be energized if the circuit breaker 21 and its supply circuit are intact and ready to fulfill their protective mission, which constitutes a new important advantage of the invention.
  • any undesirable "sticking" of the contact 2 1 in its working position results in the supply of the circuit breaker 21 in the manner indicated above, which triggers the latter if the true ignition of the gas does not cause the excitation of the second relay 7 before the end of a consecutive period T 1 - audit collage.
  • the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants, in particular those where - the photosensitive element 24 would not be a photothyristor, but a phototransistor, a resistance then being provided between the two pads intended to interact alternately with the movable contact 7 2 according to the position of the latter.

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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)
  • Feeding And Controlling Fuel (AREA)
  • Control Of Combustion (AREA)
  • Pipeline Systems (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
EP80401137A 1979-08-01 1980-07-31 Sicherheitssteuervorrichtungen für Gasventile Expired EP0023870B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401137T ATE12682T1 (de) 1979-08-01 1980-07-31 Sicherheitssteuervorrichtungen fuer gasventile.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7919806A FR2462660A1 (fr) 1979-08-01 1979-08-01 Perfectionnements aux dispositifs pour commander avec securite des vannes de gaz
FR7919806 1979-08-01

Publications (2)

Publication Number Publication Date
EP0023870A1 true EP0023870A1 (de) 1981-02-11
EP0023870B1 EP0023870B1 (de) 1985-04-10

Family

ID=9228532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401137A Expired EP0023870B1 (de) 1979-08-01 1980-07-31 Sicherheitssteuervorrichtungen für Gasventile

Country Status (5)

Country Link
EP (1) EP0023870B1 (de)
JP (1) JPS5623632A (de)
AT (1) ATE12682T1 (de)
DE (1) DE3070452D1 (de)
FR (1) FR2462660A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883415A (zh) * 2021-09-16 2022-01-04 杨春顺 一种燃气自动断路器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58152579A (ja) * 1982-03-08 1983-09-10 株式会社マグジヤン 麻雀装置
JPS60249987A (ja) * 1984-05-23 1985-12-10 都島興産株式会社 麻雀装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270800A (en) * 1964-12-07 1966-09-06 Honeywell Inc Burner control apparatus
FR2284091A1 (fr) * 1974-09-07 1976-04-02 Danfoss As Appareil de commande pour assurer l'allumage et le controle d'une installation de chauffage
DE2513911A1 (de) * 1975-03-04 1976-09-16 Landis & Gyr Ag Brennersteuergeraet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3270800A (en) * 1964-12-07 1966-09-06 Honeywell Inc Burner control apparatus
FR2284091A1 (fr) * 1974-09-07 1976-04-02 Danfoss As Appareil de commande pour assurer l'allumage et le controle d'une installation de chauffage
DE2513911A1 (de) * 1975-03-04 1976-09-16 Landis & Gyr Ag Brennersteuergeraet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883415A (zh) * 2021-09-16 2022-01-04 杨春顺 一种燃气自动断路器
CN113883415B (zh) * 2021-09-16 2024-02-20 杨春顺 一种燃气自动断路器

Also Published As

Publication number Publication date
DE3070452D1 (en) 1985-05-15
ATE12682T1 (de) 1985-04-15
JPS5623632A (en) 1981-03-06
FR2462660A1 (fr) 1981-02-13
EP0023870B1 (de) 1985-04-10
FR2462660B1 (de) 1982-09-03

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