EP0185587A1 - Auf anormalen Zug reagierender Sicherheitsmechanismus für gasbeheizte Warmwassererzeuger ohne permanente Wachflamme - Google Patents

Auf anormalen Zug reagierender Sicherheitsmechanismus für gasbeheizte Warmwassererzeuger ohne permanente Wachflamme Download PDF

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Publication number
EP0185587A1
EP0185587A1 EP85402423A EP85402423A EP0185587A1 EP 0185587 A1 EP0185587 A1 EP 0185587A1 EP 85402423 A EP85402423 A EP 85402423A EP 85402423 A EP85402423 A EP 85402423A EP 0185587 A1 EP0185587 A1 EP 0185587A1
Authority
EP
European Patent Office
Prior art keywords
gas
lever
stop
trigger lever
hot water
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
EP85402423A
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English (en)
French (fr)
Other versions
EP0185587B1 (de
Inventor
Yvan Poujoulat
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
Priority to AT85402423T priority Critical patent/ATE60122T1/de
Publication of EP0185587A1 publication Critical patent/EP0185587A1/de
Application granted granted Critical
Publication of EP0185587B1 publication Critical patent/EP0185587B1/de
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
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/247—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using mechanical means

Definitions

  • the invention relates to a safety mechanism for stopping a device for producing hot water such as a water heater or gas bath heater in the event of a draft anomaly in the flue gas evacuation pipe and applies particularly to devices without permanent pilot.
  • a safety device must be able to react to any anomaly, due for example to a bad draft, a backflow, an obstruction of the duct or a breakdown. extractor, anomaly which causes the combustion products to be pushed back into the room.
  • thermosensitive elements placed at the inlet of the draft hood, opens at a certain temperature and closes a gas intake solenoid valve.
  • a thermosensitive bulb acts on an expandable membrane which itself cuts off the admission of gas to the pilot of the device or acts directly on its thermoelectric safety mechanism to put the device in safety.
  • a draft anomaly in a duct is detected by means of a small tube which modifies the operation of a pilot light with air and gas premix and then puts the device in safety.
  • thermoelectric safety and that one cannot therefore intervene in reaction to an anomaly in the combustion products evacuation pipe.
  • the invention provides a solution to this problem in that it proposes a safety mechanism acting positively on the gas inlet valve to the appliance, in reaction to a rise in temperature in a pipe for discharging burnt gases or in a VMC sheath, temperature detected by a heat-sensitive element.
  • a movable member controlled by this thermosensitive element known per se is mechanically connected to a trigger lever of the cocking mechanism of the gas inlet valve to the device to cause the closing of the latter in the event of temperature rise.
  • the trigger lever in the event of failure of the movable member is also subjected to the action of a spring causing disarming of the inlet valve, thus ensuring additional positive security.
  • the body 1 of the tap contains a valve 2 returned by a spring 3 on its seat 4. In the position shown, the valve is closed and closes the gas inlet duct 5. An operating rod 6 of the valve 2 is pressed against a cocking lever 7 pivoting around the axis 8. The end of this lever carries a boss 9 with a rounded edge allowing it to snap on the hooking spout 10 of a trigger lever 11. The latter pivots freely around an axis 12.
  • the branch 13 of said lever opposite to that carrying the hooking spout 10 is located inside a housing 14 containing a movable member consisting of an expandable bellows 15 connected to a bulb with liquid expansion 16 placed in the VMC sheath
  • the movable lower part of the bellows is supported on a sleeve 17 movable inside the housing 14 and returned by a spring 18.
  • a stop 19 and a bracket 20 are integral with the sleeve whose movement they follow.
  • the branch 13 of the trigger lever 11 and an arm 21 pivoting around an axis 22 are engaged between this stop 19 and this bracket 20.
  • the opposite end of the arm 21 can bear on the trigger lever 11 by l 'via an adjustable stop 23.
  • a disarming lever 24 also pivoting around the axis 8 acts on the disarming branch 25 of the trigger lever II which it can pivot around the axis 12.
  • the figure shows the elements in the rest position when the valve 2 is closed on its seat 4.
  • the user when he wants to cock the device pulls the lever of the cocking lever 7 causing it to pivot around its axis 8, thus exercising a push on the rod 6 in the direction of opening of the valve against the return force of the spring 3.
  • the apparatus is thus armed and if there is drawing hot water the gas is admitted to the burners by the opening of an inlet valve not shown. If the combustion products are evacuated normally the bellows 15 occupies the position shown in the drawing, according to which the thrust of the spring 18 on the sleeve 17 is balanced by the internal pressure of the liquid in the bellows.
  • the branch 13 of the trigger lever 11 occupies the position shown between the stop 19 and the bracket 20.
  • This device is positively safe because in the event of a leak or failure of the bulb 16 or the bellows 15, the sleeve 17 under the effect of the spring 18 moves upwards in the housing 14.
  • the stem 20 driven in this movement makes pivot around its axis 22 the arm 21, the end of which acts via the stop 23 on the trigger lever 11 in the direction of disengaging the lever 7 and stopping the device, as in the case previous.
  • the user after use, can disarm the device by acting on the pivoting lever 24, the upper end of which also turns the trigger lever 11 by means of the disarming branch 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Temperature-Responsive Valves (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Inorganic Fibers (AREA)
  • Looms (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP85402423A 1984-12-07 1985-12-05 Auf anormalen Zug reagierender Sicherheitsmechanismus für gasbeheizte Warmwassererzeuger ohne permanente Wachflamme Expired - Lifetime EP0185587B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402423T ATE60122T1 (de) 1984-12-07 1985-12-05 Auf anormalen zug reagierender sicherheitsmechanismus fuer gasbeheizte warmwassererzeuger ohne permanente wachflamme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418688 1984-12-07
FR8418688A FR2574526B1 (fr) 1984-12-07 1984-12-07 Mecanisme de securite reagissant a une anomalie de tirage pour appareil a gaz de production d'eau chaude sans veilleuse permanente

Publications (2)

Publication Number Publication Date
EP0185587A1 true EP0185587A1 (de) 1986-06-25
EP0185587B1 EP0185587B1 (de) 1991-01-16

Family

ID=9310337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402423A Expired - Lifetime EP0185587B1 (de) 1984-12-07 1985-12-05 Auf anormalen Zug reagierender Sicherheitsmechanismus für gasbeheizte Warmwassererzeuger ohne permanente Wachflamme

Country Status (5)

Country Link
EP (1) EP0185587B1 (de)
AT (1) ATE60122T1 (de)
DE (2) DE3581384D1 (de)
ES (1) ES8608660A1 (de)
FR (1) FR2574526B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606854A1 (fr) * 1986-11-17 1988-05-20 Sdecc Robinet d'admission gaz a securite integree pour appareil de production d'eau chaude sans veilleuse permanente
FR2626354A1 (fr) * 1988-01-26 1989-07-28 Sdecc Systeme de securite basse pression de gaz adapte a un robinet d'admission comportant lui-meme un mecanisme metastable de securite thermique controlant l'evacuation correcte des produits de la combustion
FR2673703A1 (fr) * 1991-03-06 1992-09-11 Innovations Tech Appareil a gaz a securite de surchauffe.
FR2731776A1 (fr) * 1995-03-16 1996-09-20 Dtn Fr Sa Dispositif de securite ou regulation passif pour appareil de chauffage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301169A (fr) * 1961-09-20 1962-08-10 Saunier Duval Dispositif détecteur de flamme à très faible inertie pour appareils à gaz et notamment pour chauffe-eau et chauffe-bains instantanés à gaz fonctionnant sans veilleuse permanente
FR1509085A (fr) * 1966-10-17 1968-01-12 Saunier Duval Dispositif de sécurité permettant d'interrompre l'arrivée du gaz au brûleur d'un appareil à gaz en cas de tirage insuffisant du conduit de fumée sur lequel est raccordé l'appareil ou en cas de refoulement par ledit conduit
FR2106736A6 (de) * 1970-09-23 1972-05-05 Saunier Duval
FR2147500A5 (de) * 1971-07-29 1973-03-09 Denisselle Jean

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301169A (fr) * 1961-09-20 1962-08-10 Saunier Duval Dispositif détecteur de flamme à très faible inertie pour appareils à gaz et notamment pour chauffe-eau et chauffe-bains instantanés à gaz fonctionnant sans veilleuse permanente
FR1509085A (fr) * 1966-10-17 1968-01-12 Saunier Duval Dispositif de sécurité permettant d'interrompre l'arrivée du gaz au brûleur d'un appareil à gaz en cas de tirage insuffisant du conduit de fumée sur lequel est raccordé l'appareil ou en cas de refoulement par ledit conduit
FR2106736A6 (de) * 1970-09-23 1972-05-05 Saunier Duval
FR2147500A5 (de) * 1971-07-29 1973-03-09 Denisselle Jean

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606854A1 (fr) * 1986-11-17 1988-05-20 Sdecc Robinet d'admission gaz a securite integree pour appareil de production d'eau chaude sans veilleuse permanente
EP0269509A1 (de) * 1986-11-17 1988-06-01 Saunier Duval Eau Chaude Chauffage - Sdecc Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme
FR2626354A1 (fr) * 1988-01-26 1989-07-28 Sdecc Systeme de securite basse pression de gaz adapte a un robinet d'admission comportant lui-meme un mecanisme metastable de securite thermique controlant l'evacuation correcte des produits de la combustion
FR2673703A1 (fr) * 1991-03-06 1992-09-11 Innovations Tech Appareil a gaz a securite de surchauffe.
FR2731776A1 (fr) * 1995-03-16 1996-09-20 Dtn Fr Sa Dispositif de securite ou regulation passif pour appareil de chauffage

Also Published As

Publication number Publication date
ATE60122T1 (de) 1991-02-15
FR2574526A1 (fr) 1986-06-13
DE3581384D1 (de) 1991-02-21
FR2574526B1 (fr) 1987-01-02
EP0185587B1 (de) 1991-01-16
DE185587T1 (de) 1986-11-27
ES8608660A1 (es) 1986-07-16
ES549533A0 (es) 1986-07-16

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