FR2483573A2 - Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve - Google Patents

Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve Download PDF

Info

Publication number
FR2483573A2
FR2483573A2 FR8011770A FR8011770A FR2483573A2 FR 2483573 A2 FR2483573 A2 FR 2483573A2 FR 8011770 A FR8011770 A FR 8011770A FR 8011770 A FR8011770 A FR 8011770A FR 2483573 A2 FR2483573 A2 FR 2483573A2
Authority
FR
France
Prior art keywords
orifice
water
gas
membrane
passage
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
FR8011770A
Other languages
French (fr)
Other versions
FR2483573B2 (en
Inventor
Jean-Claude Charron
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
Priority claimed from FR7702832A external-priority patent/FR2379767A1/en
Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Priority to FR8011770A priority Critical patent/FR2483573A2/en
Priority to DE3120777A priority patent/DE3120777C2/en
Priority to NL8102586A priority patent/NL8102586A/en
Priority to IT22006/81A priority patent/IT1137072B/en
Publication of FR2483573A2 publication Critical patent/FR2483573A2/en
Application granted granted Critical
Publication of FR2483573B2 publication Critical patent/FR2483573B2/fr
Granted legal-status Critical Current

Links

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
    • F23N1/087—Regulating fuel supply conjointly with another medium, e.g. boiler water using mechanical means
    • 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
    • F23N2235/24—Valve details

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The controller has a housing (17) which contains a diaphragm (1) separating the two water spaces (2,3). The diaphragm is supported by a rigid central disc (29). Water is admitted through an inlet (4) which connects with the lower space (3). Water flow is regulated by a spring loaded piston (8) having a stem (12) fitting in a central passage (5). The space (3) is vented through the orifice (15) to the outlet passage (6). The flow is controlled by an obturation tongue which slides in the housing and is actuated by the diaphragm via a rod (26). This allows pivoting of the tongue for partial obturation and sliding for full closure.

Description

L'invention se rapporte aux mécanismes à membrane différentielle acticnnee par la circulation de l'eau, utilisée pour la ccande de l.'arrivée de gaz aux brûleurs des appareils du genre chauf,e- bains et chaudières mixtes instantanées à gaz, et tout spécialement des appareils du genre en question du type à puissance variable.The invention relates to mechanisms with a differential membrane activated by the circulation of water, used for controlling the supply of gas to the burners of appliances of the heating type, baths and instantaneous mixed gas boilers, and all especially devices of the kind in question of the variable power type.

On sait que la différence de pression d'eau agissant sur la membrane différentielle est donnée exclusivement par le passage de l'eau à travers un organe d'obturation dont les mouvements d'ouverture et de fermeture sont liés aux mouvements de montee et de descente de la membrane, et que la section de passage de l'eau à travers l'organe d'obturation varie linéairement entre d'une part une valeur minimum calibrée qui fixe le débit minimum d'eau nécessaire à l'allumage du brûleur et d'autre part une valeur maximum qui détermine la limite supérieure souhaitée pour le débit d'eau, de telle sorte que la levée de la membrane différentielle soit une fonction sensiblement linéaire du débit d'eau traversant l'appareil.We know that the difference in water pressure acting on the differential membrane is given exclusively by the passage of water through a shutter member whose opening and closing movements are linked to the movements of ascent and descent of the membrane, and that the section of passage of water through the shutter member varies linearly between on the one hand a minimum calibrated value which fixes the minimum flow of water necessary for the ignition of the burner and d 'on the other hand a maximum value which determines the upper limit desired for the water flow, so that the lifting of the differential membrane is a substantially linear function of the water flow through the device.

D'après le brevet principal, l'organe d'obturation est une languette pivotante fixée directement au fond du bottier du mécanisme à membrane, qui est munie d'un orifice calibré pour le débit minimum, et dont l'extrémité se déplace à partir d'un certain seuil avec la membrane différentielle pour dégager progressivement l'orifice de passage d'eau jusqu'à la limite supérieure du débit.According to the main patent, the closure member is a pivoting tongue fixed directly to the bottom of the case of the membrane mechanism, which is provided with an orifice calibrated for minimum flow, and the end of which moves from a certain threshold with the differential membrane to gradually clear the water passage orifice up to the upper limit of the flow.

On s'est aperçu cependant que pour atteindre un débit d'eau suffisant par l'orifice d'obturation, par exemple lors de puisage à grand débit, le degré d'ouverture de la languette pivotante est trop faible pour dégager l'orifice de passage de façon suffisarte.It has been observed, however, that in order to achieve a sufficient flow of water through the closure orifice, for example during high-speed drawing, the degree of opening of the pivoting tab is too low to clear the orifice. enough passage.

Selon l'invention la languette est disposée de manière à pouvoir effectuer, à l'issue du premier mouvement de pivotement au cours ducuel elle délace partiellement l'orifice de passage d'eau, un second mouvement de translation qui l'écarte du boitier en suivant le mouvement de la membrane pour découvrir totalement l'orifice de passage.According to the invention, the tongue is arranged so as to be able to effect, at the end of the first pivoting movement during the course of the latter, it partially unlaces the water passage orifice, a second translational movement which moves it away from the housing in following the movement of the membrane to fully discover the passage opening.

Si une caractéristique 2articlire de l'invention une re- mière extre.-i é de la languette est solidaire du boîtier a l'intermédiaire d'un axe de retenue sur laquelle elle coulisse, tandis que la course de son extrémité opposée vient en appui contre la membrane dont elle suit le mouvement de déplaceent.  If a characteristic 2articlire of the invention a first extre.-i é of the tongue is secured to the housing via a retaining pin on which it slides, while the race of its opposite end comes to bear against the membrane whose movement it moves.

D'autres caractéristiques particulieres et avantages de l'invention ressortiront de la description qui va suivre d'une forme de réalisation en référence aux dessins annexés qui représentent - figure 1 : une vue en coupe verticale du mécanisme en position
de non fonctionnement.Other particular characteristics and advantages of the invention will emerge from the description which follows of an embodiment with reference to the appended drawings which represent - FIG. 1: a view in vertical section of the mechanism in position
of non-functioning.

- figure 2 : une vue en coupe partielle à plus grande echelle
montrant la languette en position d'ouverture partielle.- Figure 2: a partial sectional view on a larger scale
showing the tab in the partially open position.

- figure 3 : une vue en coupe partielle à plus grande échelle
montrant la languette en position d'ouverture totale.- Figure 3: a partial sectional view on a larger scale
showing the tab in the fully open position.

Le boîtier du mécanisme représenté à la figure 1 est constitué d'une coquille superieure 17 et d'une coquille inférieure 18 entre lesquelles est tendue une membranne différentielle 1 délimitant les deux chambres d'eau (2) et (3), membrane pourvue en son centre d'un disque de rigidité 29. Un conduit d'arrivée d'eau 4 debouche dans une petite chambre centrale (19) en communication par 1 'ori- fice annulaire (5) avec la chambre (3). Un piston régulateur de débit d'eau 8, coulissant dans une chemise extérieure 11 est poussé par un ressort derappel 9 en direction de son siège de fermeture 10 qui entoure l'orifice annulaire 5. La chemise 11 est fixé pas vissage à l'intérieur du puits de la chambre (19) ; elle est démontable par au-dessous.Le piston régulateur 8 se prolonge par une barre 13 qui traverse l'orifice annulaire 5 et qui est fixee au disque rigide central solidaire de la membrane 1. Le piston 8 porte une entretoise 12 de diamètre légèrement plus faible que l'orifice 5.The housing of the mechanism shown in Figure 1 consists of an upper shell 17 and a lower shell 18 between which is stretched a differential membrane 1 defining the two water chambers (2) and (3), membrane provided in the center of a stiffening disc 29. A water inlet pipe 4 opens into a small central chamber (19) in communication through the annular orifice (5) with the chamber (3). A water flow regulating piston 8, sliding in an outer jacket 11 is pushed by a call spring 9 in the direction of its closing seat 10 which surrounds the annular orifice 5. The jacket 11 is fixed by screwing inside the chamber well (19); it can be dismantled from below. The regulating piston 8 is extended by a bar 13 which passes through the annular orifice 5 and which is fixed to the central rigid disc secured to the membrane 1. The piston 8 carries a spacer 12 of slightly larger diameter weak than port 5.

La chambre inférieure (3) communique avec le conduit de sortie d'eau 6 par un orifice calibré 16 prévu dans le fond du boîtier 18. Un petit conduit 7 égalise la pression entre la chambre supé- rieure (2) et le conduit 6. La membrane 1 est liée par une ti 22 au clapet 23 d'aission du saz aux bruleurs non fe-r-^-rt
La tlge 22 est ainsi solidaire de la barre 3. Le clapet w es r..airtenu ferre contre son siège par le ressort 24 et obture le conduit d'arrivée de gaz 25.The lower chamber (3) communicates with the water outlet conduit 6 through a calibrated orifice 16 provided in the bottom of the housing 18. A small conduit 7 equalizes the pressure between the upper chamber (2) and the conduit 6. The membrane 1 is linked by a ti 22 to the valve 23 for the sazionion of the burners not fe-r - ^ - rt
The rod 22 is thus secured to the bar 3. The valve w es r..airtenu locks against its seat by the spring 24 and closes the gas inlet duct 25.

Une languette pivotante 14 est solidaire, par une de ses extrémités, à un axe de retenue 26 sur lequel elle peut coulisser entre le fond du boitier 18 et la tête 27 de l'axe 26 formant butée. En outre l'orifice prévu sur la languette, traversé par l'axe 26, est dimen sionné avec un certain jeu pour permettre à celle-ci de pivoter sans difficulté comme l'illustrent les figures 2 et 3.A pivoting tongue 14 is secured, at one of its ends, to a retaining pin 26 on which it can slide between the bottom of the housing 18 and the head 27 of the pin 26 forming a stop. In addition, the orifice provided on the tongue, crossed by the axis 26, is dimensioned with a certain clearance to allow the latter to pivot without difficulty as illustrated in FIGS. 2 and 3.

L'autre extrémité de la languette se termine par une fourche 21 qui coiffe sans frottements la barre 13 du piston ; I'écartement des deux branches de la fourche est toutefois inférieur à la largeur de l'entretoise 12 portée par le piston. La languette flexible 14 porte elle-meme un clapet profilé 28 muni d'un petit orifice 15 qui se superpose à l'orifice calibré 16, de telle sorte que dans sa position représentée à la figure 1, la chambre (3) ne communique avec le conduit de sortie 6 que par une section egale à celle du petit orifice 15.The other end of the tongue ends in a fork 21 which covers the bar 13 of the piston without friction; The spacing of the two branches of the fork is, however, less than the width of the spacer 12 carried by the piston. The flexible tongue 14 itself carries a profiled valve 28 provided with a small orifice 15 which is superimposed on the calibrated orifice 16, so that in its position shown in FIG. 1, the chamber (3) does not communicate with the outlet duct 6 only by a section equal to that of the small orifice 15.

Le fonctionnement de ce mécanisme s'effectue de la façon suivante
A partir de la position repos représentée à la figure 1, l'ouverture d'un robinet de puisage entraine un faible courant d'eau vers le conduit 6 par le seul petit orifice 15. La dépression bien connue qui s'établit dans la chambre (2) amorce donc la levée de la membrane 1 et parlà -l'ouverture partielle du clapet 23 à l'encontre du ressort 24 c'est-à-dire que le gaz est donc admis au brûleur à faible débit. Au cours de ce premier temps d'ouverture illustré à la figure 2, l'entretoise 12 du piston obturateur 8, qui a suivi le mouvement de la membrane, et qui a donc agit sur la fourche 21 de la languette 14, a provoque le pivotement de cette derniere autour de l'axe de retenue 26. Le clapet profilé 28 a dégagé partiellement l'orifice 16 complétant ainsi la section de passage d'eau minimum assurée par le petit orifice 15. L'extrémité 21 de la languette est en appui sur le disque 29 de la membrane.The operation of this mechanism is as follows
From the rest position shown in FIG. 1, the opening of a drawing-off valve causes a weak current of water towards the conduit 6 through the only small orifice 15. The well-known depression which is established in the chamber (2) therefore initiates the lifting of the membrane 1 and parlà -the partial opening of the valve 23 against the spring 24, that is to say that the gas is therefore admitted to the burner at low flow rate. During this first opening time illustrated in FIG. 2, the spacer 12 of the shutter piston 8, which followed the movement of the membrane, and which therefore acted on the fork 21 of the tongue 14, caused the pivoting of the latter around the retaining axis 26. The profiled valve 28 has partially released the orifice 16 thus completing the minimum water passage section provided by the small orifice 15. The end 21 of the tongue is in support on the disc 29 of the membrane.

A partir de cette fraction de la course totale de levée du piston régulateur 8, l'augmentation du débit de puisage conduit à la levée du fiston 8, l'entretoise 12 est en appui contre la languette dont 1 'extrémité 21 est elle-même en butée contre le disque 29 e de la membrane. Le piston 8 entraine la languette 14 dans son mouvement ascendant, -en un mouvement de translation-, du fait du libre jeu de son orifice sur l'axe de retenue 26 ; ce mouvement est limité par la tête 27 et correspond a la leveeXmaxi- mum de la membrane 1 dans le boitier. Le clapet profilé 28 a alors dégagé totalement l'orifice 16, et la perte de charge de l'eau est donnée par la section de cet orifice 16. From this fraction of the total lift stroke of the regulating piston 8, the increase in the drawing rate leads to the lifting of the piston 8, the spacer 12 is in abutment against the tongue, the end 21 of which is itself in abutment against the disc 29 e of the membrane. The piston 8 drives the tongue 14 in its upward movement, -in a translational movement-, due to the free play of its orifice on the retaining pin 26; this movement is limited by the head 27 and corresponds to the leveeXmaximum of the membrane 1 in the case. The profiled valve 28 then completely cleared the orifice 16, and the water pressure drop is given by the section of this orifice 16.

Claims (1)

R E V E N D I C A T I O N  R E V E N D I C A T I O N Mécanisme de commande du gaz à membrane différentielle pour chauffe-bains et chaudières mixtes instantanées à gaz à puissance variable comportant une languette d'obturation munie d'un orifice calibré qui se superpose à l'orifice de passage d'eau entre la chambre haute-pression et le conduit de sortie, cr)nformément à la revendication du brevet principal, caractérisé cl ce que la languette d'obturation (14) est fixée avec jeu au boitiez (18) du mécanisme à membrane différentielle par l'intermédiaire d'un axe de retenue (26) qui lui permet d'effectuer d'abord autour dudit axe un premier mouvement de pivotement au cours duquel elle dégage partiellement l'orifice (16) de passage d'eau, puis ensuite un mouvement de translation en coulissant le long de l'axe, au cours duquel elle dégage totalement l'orifice de passage d'eau -ces mouvements de pivotement, puis de translation étant liés au mouvement de la membrane-. Differential diaphragm gas control mechanism for instantaneous variable power gas baths and instantaneous boilers comprising a shutter tab provided with a calibrated orifice which is superimposed on the orifice for the passage of water between the upper chamber pressure and the outlet conduit, cr) according to the claim of the main patent, characterized in that the closure tab (14) is fixed with clearance to the housing (18) of the differential membrane mechanism by means of a retaining pin (26) which allows it to perform first around said axis a first pivoting movement during which it partially releases the orifice (16) for the passage of water, then then a translational movement by sliding the along the axis, during which it completely clears the water passage orifice - these pivoting, then translational movements being linked to the movement of the membrane.
FR8011770A 1977-02-02 1980-05-28 Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve Granted FR2483573A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8011770A FR2483573A2 (en) 1977-02-02 1980-05-28 Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve
DE3120777A DE3120777C2 (en) 1980-05-28 1981-05-25 Gas control device for a gas water heater
NL8102586A NL8102586A (en) 1980-05-28 1981-05-26 THROTTLE CONTROL MECHANISM WITH DIFFERENTIAL MEMBRANE FOR BADGEISERS AND VARIABLE MIXERS.
IT22006/81A IT1137072B (en) 1980-05-28 1981-05-28 DIFFERENTIAL MEMBRANE GAS CONTROL MECHANISM FOR WATER HEATERS AND MIXED INSTANTANEOUS BOILERS WITH VARIABLE POWER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7702832A FR2379767A1 (en) 1977-02-02 1977-02-02 Instantaneous gas heater valve - has water operated diaphragm on common spindle with gas valve above
FR8011770A FR2483573A2 (en) 1977-02-02 1980-05-28 Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve

Publications (2)

Publication Number Publication Date
FR2483573A2 true FR2483573A2 (en) 1981-12-04
FR2483573B2 FR2483573B2 (en) 1983-04-29

Family

ID=26219835

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8011770A Granted FR2483573A2 (en) 1977-02-02 1980-05-28 Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve

Country Status (1)

Country Link
FR (1) FR2483573A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172113A2 (en) * 1984-08-16 1986-02-19 Saunier Duval Eau Chaude Chauffage - Sdecc Water flow regulator for a gas-water heater adjustable by a control mechanism with a differential membrane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379767A1 (en) * 1977-02-02 1978-09-01 Saunier Duval Instantaneous gas heater valve - has water operated diaphragm on common spindle with gas valve above

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379767A1 (en) * 1977-02-02 1978-09-01 Saunier Duval Instantaneous gas heater valve - has water operated diaphragm on common spindle with gas valve above

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172113A2 (en) * 1984-08-16 1986-02-19 Saunier Duval Eau Chaude Chauffage - Sdecc Water flow regulator for a gas-water heater adjustable by a control mechanism with a differential membrane
FR2569283A1 (en) * 1984-08-16 1986-02-21 Sdecc ADJUSTABLE WATER FLOW REGULATOR FOR DIFFERENTIAL MEMBRANE CONTROL MECHANISM FOR HOT WATER PRODUCTION APPARATUS
EP0172113A3 (en) * 1984-08-16 1986-09-24 Saunier Duval Eau Chaude Chauffage - Sdecc Water flow regulator for a gas-water heater adjustable by a control mechanism with a differential membrane

Also Published As

Publication number Publication date
FR2483573B2 (en) 1983-04-29

Similar Documents

Publication Publication Date Title
EP1966430B1 (en) Iron comprising a valve controlled by a thermally deformable element
CA1177357A (en) Fluid pressure regulating device
EP0091843A1 (en) Connector for a breathing apparatus, linking the mask to a gas-cylinder
FR2709513A1 (en) Valve controlled by gas opening for coiled tubing.
FR2483573A2 (en) Gas water heater control valve - has balanced diaphragm controlling water flow through orifice and connected to gas valve
EP1844685A2 (en) Pressure-cooking device with adjustable set-point and controlled decompression
FR2727734A1 (en) Control valve with two flow characteristic, used in industrial and heating purposes
CA1211678A (en) Piloted safety valve
FR2984448A1 (en) INTEGRATED PRESSURE SAFETY GAS REGULATOR
EP0116247A1 (en) Pressure relief valve with integrated pilot valve
FR2580774A1 (en) Safety valve for an enclosure containing a pressurised fluid
FR2594786A1 (en) COMPRESSED AIR RESPIRATORY APPARATUS FOR UNDERWATER DIVE
EP0172113A2 (en) Water flow regulator for a gas-water heater adjustable by a control mechanism with a differential membrane
FR2541434A1 (en) INSTANTANEOUS GAS WATER HEATER
FR2542346A1 (en) TAP FOR WATER HUNTING TANK
FR2567583A1 (en) DEVICE FOR PUMPING FUEL, IN PARTICULAR FOR MOTOR.
EP0442777B1 (en) Flow regulator with differential pressure controlled membrane for a hot-water gas heater
EP0924465B1 (en) Water activated hot water generator
FR1464931A (en) Fuel control device for main burner and pilot burner
FR2504188A1 (en) HYDRAULIC DEVICE FOR THE OPERATION OF GAS CIRCULATION VALVES
FR2489938A1 (en) Rapid purge for gas appliance control - has purge pipe open during pilot ignition to evacuate inner valve chamber
EP2816436A1 (en) Gas regulator with integrated excess pressure safety
FR2552848A1 (en) Hydraulic device ensuring the abrupt opening and closing of an inlet shutter for gas to a burner of an instantaneous gas bath heater or water heater
FR2618854A1 (en) Fuel-heating device for diesel engines
FR2470331A1 (en) Inverted bucket steam trap - has two phase pivoting valve gate providing positive operation as bucket moves