EP0269509B1 - Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme - Google Patents

Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme Download PDF

Info

Publication number
EP0269509B1
EP0269509B1 EP87402575A EP87402575A EP0269509B1 EP 0269509 B1 EP0269509 B1 EP 0269509B1 EP 87402575 A EP87402575 A EP 87402575A EP 87402575 A EP87402575 A EP 87402575A EP 0269509 B1 EP0269509 B1 EP 0269509B1
Authority
EP
European Patent Office
Prior art keywords
cam
valve
axis
section
button
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
EP87402575A
Other languages
English (en)
French (fr)
Other versions
EP0269509A1 (de
Inventor
Jean-Luc Veislinger
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 AT87402575T priority Critical patent/ATE59459T1/de
Publication of EP0269509A1 publication Critical patent/EP0269509A1/de
Application granted granted Critical
Publication of EP0269509B1 publication Critical patent/EP0269509B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F24H9/2042—Preventing or detecting the return of combustion gases
    • F24H9/205—Closing the energy supply
    • 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 gas inlet valve which incorporates a safety device allowing the stopping of a hot water production appliance of the water heater or gas bath heater type in the event of a draft anomaly in particular in the flue gas exhaust pipe and is particularly applicable to appliances without a 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 extractor failure, anomaly which causes the combustion products to be pushed back into the room.
  • thermosensitive element placed at the end of the draft hood opens at a certain temperature and closes a gas inlet solenoid valve.
  • a heat-sensitive bulb acts on an expandable membrane which itself cuts off the admission of gas to the pilot of the appliance or acts directly on its thermoelectric safety mechanism to bring the appliance to 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 mixture 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 solution which consists in making the gas inlet valve of the appliance act positively, a safety mechanism using a lever for triggering the cocking member of said valve and a movable member. controlled by a thermosensitive element arranged in a good place to react for example from a rise in temperature in a flue gas evacuation pipe.
  • This safety mechanism as described in European patent application EP-A 0 185 587 in the name of the Applicant comprises a lever arming mechanism of the gas inlet valve to the appliance which can be snapped onto a lever. triggering whose pivoting disarms and closes said gas inlet valve under the effect of its return spring and which has a thermosensitive element reacting in a manner known per se to a rise in temperature at the level of the evacuation of combustion products, which acts positively on said triggering lever of the arming mechanism by means of an expandable bellows whose displacement causes the pivoting of a branch of said lever and stops the device .
  • said valve comprising a rotary cocking button and a metastable mechanism of the type with a blistering membrane linked to a bulb and reacting to a rise in temperature of the combustion products
  • a cam mounted to rotate around its axis under the action. of said button, which cooperates with the control rod of the gas inlet valve and which is also movable in translation on said axis under the action of the blistering membrane mechanism to make it escape from the control rod of the valve and put the device safe.
  • the cam comprises an off-center section disposed between a cylindrical section of small diameter and a cylindrical section of larger diameter, both centered on its axis, a generator of the off-center section extending a generator of the section of small diameter, another diametrically opposite generator of this off-center section extending a generator of the section of larger diameter.
  • the operating axis of the valve control rod is in abutment against the edge of the intermediate cylindrical section of the cam and protrudes above the cylindrical section of smaller diameter.
  • the body 17 of the gas inlet valve contains a valve 6 connecting a gas inlet pipe 18 and the outlet pipe 19 to the appliance.
  • a plug 20 closing off the body 17 is crossed in leaktight fashion by the operating rod 21 of the valve 6 normally returned to its seat by the spring 11.
  • Said body 17 of the tap is integral with a control box 22 including a tubular part 15 is aligned with the rod 21 of the valve.
  • This tubular part contains an axis 7 which abuts against the end of the rod 21, which opens on the other side into the housing 22 and is supported on a cam 2.
  • the latter can rotate around its axis AA ' and has the shape shown in FIG. 2.
  • the cylindrical section 23 of the cam 2 is provided with a recess 26 with two internal plates to receive without friction an operating needle 27 secured to a rotary control button 1.
  • the latter can occupy two positions between the rest position shown and an arming position where it has rotated 180 ° counterclockwise, against the return force of a torsion spring 12.
  • a ball retainer 14 associated with a spring 16, integrated in the button 1 serves to maintain the latter in one or other of its two positions thanks to two suitable housings (28, 28 ') provided in the housing 22.
  • the other cylindrical section 24 of the cam 2 has a threaded interior orifice 29 to which is fixed an adjustment screw 9.
  • This screw is coaxial with a fixed rod 3 on which it can slide.
  • the rod carries an end stop 30 for a spring 13 bearing against the screw 9.
  • the valve body 17 also supports a safety assembly known per se consisting of a blistering metal membrane 8 capable of reacting in the direction of a passage to the convex shape shown in dotted lines during the heating of a bulb placed in an appropriate position, for example in a VMC sheath and connected to the membrane by the conduit 5.
  • the membrane 8 bears against the end of a lever 4 pivoting about an axis 10 and the other end of which abuts against screw 9.
  • the fail-safe valve as described, operates as follows.
  • Figure 1 shows the elements in the rest position when the valve 6 is closed on its seat.
  • the user when he wants to arm the device, turns the button 1 anticlockwise until the ball 14 is engaged in the other housing 28 'of the housing 22.
  • the maneuvering needle 27 engaged in the recess 26 made the cam 2 rotate in an identical manner.
  • the axis 7 bears on the off-centered cylindrical section 25 of the said cam and pushed by the latter goes up into the part tubular 15, and exerts a push on the rod 21 in the direction of the opening of the valve 6 against the return force of the spring 11.
  • the gas coming from the pipe 18 is therefore admitted towards the device through the pipe 19.
  • the diaphragm 8 and the lever 4 occupy the position shown.
  • the axis 7 exerting pressure on the part 25 of the cam 2, normally at the axis AA '(FIG. 2), the button remains in the armed position, helped in this by the snap-fastening of the ball 14 in the recess 28 'under the action of the small spring 16.
  • the cam 2 remains offset from the axis 7 preventing the device from being reset. This means that, even if the user, after having returned the button 1 to its starting position, wanted to arm it again immediately, its rotation would have no effect on the axis 7 and the valve 6 could in no case to be reopened.
  • the device is positively safe because in the event of a bulb leakage or failure, the blistering membrane immediately takes on the convex shape for which there is action on the lever 4 and securing the device.
  • the device according to the invention can operate not only with the blistering blade previously described, but also with an expansion bellows, for example coupled to a flaming blade. bage or with any expandable system whose sealing and metastability functions are not provided by the same element.
  • the user can stop the device by turning the button 1 clockwise, which brings the cam 2 back to the position in FIG. 1 for which the axis 7 is lowered and the valve 6 is closed under the action of the spring 11.
  • the spacing between the screw 9 and the cam 2 can be adjusted, these two parts cooperating by a threaded connection. It is thus possible to adjust the "overhang" of the axis 7 on the part 25 of the cam as a function of the movement of the arm 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Safety Valves (AREA)

Claims (7)

1. Gasventil mit integrierter Sicherheitsvorrichtung für Heißwassergerät ohne ständige Zündflamme, welches den Verschluß des Zufuhrventils (6) im Falle von Fehlerhaftigkeiten beim Abzug seiner Verbrennungsprodukte erlaubt, und das einen Drehknopf (1) umfaßt, der einen Nocken (2) betätigt, der auf die Stange (7, 21) des Ventils (6) und eine als bauchige Membran ausgeführte metastabile Vorrichtung (8) wirkt, die mit einem auf eine Temperaturerhöhung der Verbrennungsprodukte reagierenden kugelförmigen Element verbunden ist, wobei diese Vorrichtung den Verschluß des Ventils auslösen kann, dadurch gekennzeichnet, daß der Nocken (2), der durch Betätigung des Knopfes (1) drehbar um die Achse AA' angebracht ist, und mit der Steuerstange (7, 21) des Ventils (6), die senkrecht zu Achse AA' angeordnet ist, zusammenwirkt, auch parallel zu dieser Achse unter Einwirkung der als bauchige Membran (8) ausgeführten Vorrichtung (4, 9) verschiebbar ist, um damit die Steuerstange des Ventils gegenüber dem Nocken freizugeben und das Gerät zu sichern.
2. Ventil nach Anspruch 1, dadurch gekennzeichnet, daß der Nocken (2) einen dezentrierten Abschnitt (25) aufweist, der zwischen einem zylindrischen Abschnitt (23) mit geringem Durchmesser und einem zylindrischen Abschnitt (24) mit einem größeren Durchmesser angeordnet ist, wobei beide auf der Achse AA' zentriert sind.
3. Ventil nach Anspruch 2, dadurch gekennzeichnet, daß eine Mantellinie des dezentrierten Abschnittes (25) eine Mantellinie des Abschnitts (23) mit dem geringen Durchmesser verlängert, und daß eine weitere, diametral gegenüberliegende Mantellinie dieses dezentrierten Abschnitts eine Mantellinie des Abschnitts (24) mit dem größeren Durchmesser verlängert.
4. Ventil nach Anspruch 3, dadurch gekennzeichnet, daß die Betätigungsspindel (7) der Steuerstange (21) des Ventils (6) gegen den Rand des Zwischenabschnitts (25) des Nockens (2) anliegt und über den zylindrischen Abschnitt (23) mit dem geringeren Durchmesser hinausragt.
5. Ventil nach Anspruch 2, dadurch gekennzeichnet, daß die als bauchige Membran (8) ausgeführte Vorrichtung mittels eines Hebels (4) auf eine mit dem Nocken (2) verbundene Stellschraube (9) wirkt, wobei der Komplex Schraube-Nocken auf einem feststehenden Stift (3) längs der Achse AA' verschiebbar ist.
6. Ventil nach Anspruch 5, dadurch gekennzeichnet, daß der Hebel (4) auf die Schraube (9) in Richtung eines Abrückens des Nockens (2) von seinem Steuerungsknopf (1) gegen die Rückstellkraft eine Feder (13) wirkt.
7. Ventil nach Anspruch 5, dadurch gekennzeichnet, daß der Abstand zwischen der Schraube (9) und dem Nocken (2) aufgrund der Gewindeverbindung, durch die sie verbunden werden, regulierbar ist.
EP87402575A 1986-11-17 1987-11-16 Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme Expired - Lifetime EP0269509B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402575T ATE59459T1 (de) 1986-11-17 1987-11-16 Gasventil mit integrierter sicherheitsvorrichtung fuer heisswassergeraet ohne staendige zuendflamme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615929A FR2606854B1 (fr) 1986-11-17 1986-11-17 Robinet d'admission gaz a securite integree pour appareil de production d'eau chaude sans veilleuse permanente
FR8615929 1986-11-17

Publications (2)

Publication Number Publication Date
EP0269509A1 EP0269509A1 (de) 1988-06-01
EP0269509B1 true EP0269509B1 (de) 1990-12-27

Family

ID=9340859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402575A Expired - Lifetime EP0269509B1 (de) 1986-11-17 1987-11-16 Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme

Country Status (4)

Country Link
EP (1) EP0269509B1 (de)
AT (1) ATE59459T1 (de)
DE (2) DE3767136D1 (de)
FR (1) FR2606854B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2656670B1 (fr) * 1990-01-04 1992-04-24 Saunier Duval Eau Chaude Robinet d'admission gaz a securite de debordement pour appareil de production d'eau chaude sans veilleuse.
CN100453870C (zh) * 2005-09-30 2009-01-21 陈雪峰 带减压装置的电热水器安全阀

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361167A (en) * 1979-11-29 1982-11-30 Ogontz Controls Company Snap-acting drain valve
FR2574526B1 (fr) * 1984-12-07 1987-01-02 Sdecc Mecanisme de securite reagissant a une anomalie de tirage pour appareil a gaz de production d'eau chaude sans veilleuse permanente

Also Published As

Publication number Publication date
FR2606854A1 (fr) 1988-05-20
ATE59459T1 (de) 1991-01-15
DE3767136D1 (de) 1991-02-07
DE269509T1 (de) 1988-09-22
FR2606854B1 (fr) 1989-03-03
EP0269509A1 (de) 1988-06-01

Similar Documents

Publication Publication Date Title
FR2683290A1 (fr) Dispositif adaptable a un robinet a fonctionnement automatique.
FR2550607A1 (fr) Regulateur destine a etre monte sur le raccord de sortie d'une bouteille de gaz ou recipient analogue
EP0269509A1 (de) Gasventil mit integrierter Sicherheitsvorrichtung für Heisswassergerät ohne ständige Zündflamme
JP2002188811A (ja) 回転式ガス弁装置
EP0185587B1 (de) Auf anormalen Zug reagierender Sicherheitsmechanismus für gasbeheizte Warmwassererzeuger ohne permanente Wachflamme
FR2500531A1 (fr) Dispositif pour le controle et la regulation de la temperature en particulier du liquide de refroidissement des moteurs a combustion interne
FR2610703A1 (fr) Dispositif de regulation et de commande pour un four de cuisson menager chauffe au gaz avec bruleur de gril supplementaire
EP0436439B1 (de) Gasventil mit Rückstromsicherung für Heisswassergerät ohne Zündflamme
FR2583506A1 (fr) Robinet a gaz muni d'une soupape de securite et presentant un encombrement en hauteur reduit, pour plaques chauffantes et appareils de cuisson a gaz, en particulier pour cuisinieres
FR2591720A1 (fr) Commutateur rotatif pour cuisinieres a gaz
FR2626354A1 (fr) 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
EP0333540B1 (de) Gasventil mit einem thermoelektrischen Sicherheitssystem und Gerät zur Verwendung eines solchen Ventils
FR2481417A1 (fr) Dispositif piezo-electrique d'allumage de gaz pour appareils menagers tels que cuisinieres a gaz, rechauds et analogues
FR2460437A1 (fr) Soupape pour un appareil menager fonctionnant sous pression
FR2624260A1 (fr) Appareil de chauffage a gaz
CH368112A (fr) Dispositif de commande d'un brûleur à gaz
FR2479395A3 (fr) Robinet a soupape a caracteristique d'ouverture a deux etages, notamment robinet de combustible pour appareils chauffes au gaz
JPH0445731B2 (de)
FR2772462A1 (fr) Dispositif automatique d'extinction d'un bruleur
FR1464931A (fr) Dispositif de commande du combustible pour appareil à brûleur principal et à brûleur-pilote
BE444392A (de)
FR2643697A3 (fr) Robinet de securite a thermostat pour alimentation en gaz en particulier des fours de cuisson d'aliments
BE524980A (de)
CH275000A (fr) Dispositif de commande pour brûleur à gaz.
FR2673703A1 (fr) Appareil a gaz a securite de surchauffe.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE IT NL

ITCL It: translation for ep claims filed

Representative=s name: JACOBACCI CASETTA & PERANI S.P.A.

DET De: translation of patent claims
17P Request for examination filed

Effective date: 19880802

17Q First examination report despatched

Effective date: 19900223

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19901227

REF Corresponds to:

Ref document number: 59459

Country of ref document: AT

Date of ref document: 19910115

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3767136

Country of ref document: DE

Date of ref document: 19910207

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19951120

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19951130

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960125

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19961130

BERE Be: lapsed

Owner name: SAUNIER DUVAL EAU CHAUDE CHAUFFAGE - SDECC

Effective date: 19961130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19970801

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051116