EP0323921A1 - Gas boiler of the gas-tight type with an adjustable exhaust gas ventilator, and associated pressure switch-controlled security system - Google Patents

Gas boiler of the gas-tight type with an adjustable exhaust gas ventilator, and associated pressure switch-controlled security system Download PDF

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Publication number
EP0323921A1
EP0323921A1 EP89400002A EP89400002A EP0323921A1 EP 0323921 A1 EP0323921 A1 EP 0323921A1 EP 89400002 A EP89400002 A EP 89400002A EP 89400002 A EP89400002 A EP 89400002A EP 0323921 A1 EP0323921 A1 EP 0323921A1
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EP
European Patent Office
Prior art keywords
orifice
hood
plug
boiler according
boiler
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
EP89400002A
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German (de)
French (fr)
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EP0323921B1 (en
Inventor
Mikael Choimet
Bernard Chatain
Lionnel Mollard
Patrice Piquin
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
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Publication of EP0323921A1 publication Critical patent/EP0323921A1/en
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Publication of EP0323921B1 publication Critical patent/EP0323921B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/001—Details arrangements for discharging combustion gases
    • F24C15/002—Details arrangements for discharging combustion gases for stoves of the closed type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F24H2203/00—** to be deleted **

Definitions

  • the invention which is located in the technical field of gas tight boilers, in particular wall-hung boilers, relates to a particular arrangement of the air distribution box and of the exhaust fan of the burnt gases which is orientable upwards or rear of the device, as well as a pressostatic safety system associated with it.
  • This arrangement is advantageous because it makes it possible to connect the device to a micro-suction cup outside the wall of the housing by drilling in the latter only a simple round hole of small diameter.
  • the microvalve also with a coaxial structure is simpler to manufacture and has a minimum size. This provision is valid if the output and the input are coaxial. In this case, the fresh air arrives in a distribution chamber provided in the device, located just at the entrance of the concentric tube.
  • the exhaust fan is mounted on the vertical wall of a hood having an L-shaped profile, the vertical exhaust chimney of which is placed above a collecting chamber burnt gases.
  • the fan drive motor is therefore with a horizontal axis; the ventila teur covers an orifice provided on the chimney and its outlet pipe oriented upwards passes through an air distributor box which closes the upper surface of the appliance, to be fitted in the external duct leading to the micro-suction cup.
  • the fan is thus housed in the hollow space between the top of the collecting chamber, the chimney and the air distributor.
  • the invention overcomes this disadvantage in that it offers the possibility of connecting the device to the outside in a known manner by its upper part, but also in a new way by its rear part at the level of the hood. , and this because the exhaust fan and its exhaust duct can be oriented on the chimney to which the fan is fixed.
  • This arrangement rendering the usual upper air distributor inoperative, it is eliminated, the air distribution function being provided by the whole of the upper part of the boiler where the extractor and the pressure taps are located and therefore a complementary pressostatic safety device able to act in one or other of the positions of the extractor is provided inside the boiler.
  • a main object of the invention consists of a gas-tight boiler comprising a hood for evacuating burnt gases on the vertical chimney of which is fitted a fan ensuring the extraction of these gases in a duct which exits through a hole provided at the top of the device and inside a duct of larger diameter, the annular space between the two ducts serving for the admission of fresh air into the sealed enclosure, boiler according to which the upper zone of the apparatus at the level of the hood is provided with another orifice at the rear of the appliance, of the same dimension as the upper orifice, the extractor fan being mounted in an adjustable manner on the vertical chimney of the hood so that its duct can lead into the upper orifice rear opening, a plug being adapted to close one or the other of these two unused openings and an additional pressostatic safety device being mounted and fixed or tared fixedly in the upper zone to act whatever the position of the flue gas exhaust duct.
  • a horizontal plate bordering the base of the hood on the front face and the sides of the apparatus separates the zone of the hood from the zone of the exchanger and is provided with orifices, the two lateral parts of the plate each being provided with a single hole and the front part with at least two holes of different dimensions and irregularly arranged, or a slot.
  • a central part of the plug cooperates, when said plug is in the closed position of one of the orifices, with a conduit leading to the high-pressure chamber of a pressure switch, a sealing disc adhesive being provided on the plug to the right of the opening of one of the conduits which it closes when the plug is correctly placed.
  • the other conduit coming from the upper orifice opens, a pressure tap being closed by the plug when the other pressure tap is open and vice versa.
  • the boiler shown in the figures essentially comprises three superimposed zones A, B and C.
  • the upper zone A extends from the upper part of the appliance to the base of the hood 1 for discharging the burnt gases.
  • the intermediate zone B includes the fin block 2 of the heating body 3 and the burner ramp 4 with its pilot light 5 and its safety thermocouple 6.
  • the lower zone C below the burner contains the gas intake mechanisms, the safety and control mechanisms, the circulation pump, and all other elements known per se and therefore not shown. Zones A and B form an enclosure airtight to the outside air.
  • a lower plate 7 which forms a separation between zones B and C is therefore crossed in a sealed manner by the supply and connection conduits to the burner 4, to the pilot 5 and to the thermocouple 6.
  • the front cover 8 returning to the side seals on the side panels of the device, on the plate 7 and on an upper plate 9 forming the cover of the upper zone A.
  • the front cover 8 is also supported on a horizontal plate 10 which borders the base of the boot 1 on the front face and on its sides, said plate being provided with orifices 11, allowing air to pass from zone A to zone B.
  • the lateral parts of the plate 10 are each provided with an oblong hole 11 substantially in the middle while on the front part, two oblong holes 11a of different dimensions are arranged close to each other on the side of the exhaust fan 14, it i.e. at the level of the area outside the ento boot urant ventilation, and a smaller round hole 11b is disposed on the other side.
  • one or more slots can replace the holes to modify the air distribution.
  • the hood 1 has an L-shaped profile, the lower rectangular part of which covers the fin block 2 and forms a collecting chamber for the burnt gases which escape through a vertical exhaust chimney 12 towards an orifice 13 provided on a side wall of this fireplace.
  • On said orifice is fixed by several easily accessible screws an exhaust fan 14 with its drive motor 15 with a horizontal axis.
  • the burnt gases are extracted by a conduit 16 which passes through a larger diameter orifice 17 provided in the upper plate 9.
  • On the orifice 17 is mounted a fresh air intake conduit 18 coaxial with the conduit 16 which allows the connection of the device to a not shown microvalve provided in the neighboring wall above the device.
  • the rear wall of zone A, forming the bottom, behind the hood 1, is also provided with an orifice 19 of the same diameter as the upper orifice 17 which in the illustrated case is closed by a plug 20 as this can be seen more clearly in the schematic drawing in FIG. 4.
  • This plug 20 is a stopper cover which closes the unused rear hole 19 and which consists of an annular part 21 for fixing around the periphery of the orifice 19 and a counter-stamped central part 22, a seal, not shown, being inserted between the plug and the bottom of the boiler.
  • a self-adhesive sealing pad 23 is provided on the countersunk 22. On this pad is supported the open end 26 of a small conduit 24 leading to the high-pressure chamber of a pressure switch not shown.
  • closing the plug 20 automatically closes the opening 26 of the conduit 24, and that no mounting of the plug on the opening 19 is possible if the chip 23 is not in the correct position.
  • On this duct 24 opens another duct 25 also coming from an opening 27 forming a pressure tap located at the edge of the opening 17 in the area of the fresh air intake duct 18.
  • the pressure taps 26 and 27 are positioned at the same distance from the edge of the orifices 19 and 17.
  • the device is connected to the upper outlet, that is to say that the exhaust fan 14 is fixed to the hood 1 so that its duct 16 for the outlet of the burnt gases opens into the 'upper opening 17, where it is capped, as we have seen, by a fresh air intake duct 18.
  • the rear outlet 19 is then closed by the plug 20, the patch 23 of which closes the opening 26 of the conduit 24. Consequently only the pressure tap 27 is connected to the pressure switch, and detects the air intake pressure in the zone A of the device. Relative to the static value of the pressure taken at another point (not shown) of the sealed chamber, the pressure switch makes it possible to obtain a pressostatic detection proportional to the speed of flow of fresh air through the upper opening 17 and consequently its flow.
  • the latter have the function of reducing the passage of the air from A to B and introduce a pressure drop at the same time as distributing the flow over the periphery of the heating body.
  • zone A and zone B which is provided with judiciously arranged air passage orifices, avoids the use of an air distributor box which considerably simplifies the construction of the apparatus.

Abstract

The exhaust gas ventilator 14 is mounted in an adjustable manner on the vertical chimney 12 of the hood 1 so that its pipe 16 for evacuation of the burned gases can open into the upper orifice 17 or into the rear orifice 19, a plug 20 being adapted to close one or the other of these two unused orifices, a supplementary pressure switch-controlled safety device being mounted in a fixed manner in the zone of the hood so as to act whatever the position of the pipe for evacuation of the burned gases. Application in forced-draught wall-mounted boilers. <IMAGE>

Description

L'invention qui se situé dans le domaine technique des chaudières étanches à gaz notamment les chaudières mu­rales, concerne un agencement particulier de la boîte de répartition d'air et du ventilateur d'extraction des gaz brûlés qui est orientable vers le haut ou l'arrière de l'appareil, ainsi qu'un système de sécurité pressostatique qui lui est associé.The invention which is located in the technical field of gas tight boilers, in particular wall-hung boilers, relates to a particular arrangement of the air distribution box and of the exhaust fan of the burnt gases which is orientable upwards or rear of the device, as well as a pressostatic safety system associated with it.

On sait que dans les appareils à gaz à chambre de combustion étanche du type à tirage forcé par un ventila­teur électrique d'extraction, l'arrivée de l'air de combus­tion et l'évacuation des produits de combustion se font très souvent à l'aide de deux conduits concentriques ou coaxiaux. Le conduit intérieur qui a précisément un diamè­tre plus petit que le conduit extérieur est utilisé pour l'évacuation des gaz chauds constituant les produits de la combustion du gaz, l'air nécessaire à la combustion cir­culant en sens inverse dans l'espace compris entre le conduit intérieur chaud et le conduit extérieur froid.It is known that in gas appliances with a sealed combustion chamber of the forced draft type by an electric exhaust fan, the arrival of combustion air and the evacuation of combustion products very often take place at the using two concentric or coaxial conduits. The inner duct which has a precisely smaller diameter than the outer duct is used for the evacuation of the hot gases constituting the products of the combustion of the gas, the air necessary for combustion circulating in opposite directions in the space between the hot interior duct and cold exterior duct.

Cette disposition est avantageuse car elle per­met de raccorder l'appareil à une microventouse à l'exté­rieur du mur du logement en ne perçant dans ce dernier qu'un simple trou rond de faible diamètre. De plus la microven­touse également à structure coaxiale est plus simple à fa­briquer et présente un encombrement minimum. Cette dispo­sition est valable si la sortie et l'entrée sont coaxiales. Dans ce cas l'air frais arrive dans une chambre de réparti­tion prévue dans l'appareil, située juste à l'entrée du tube concentrique.This arrangement is advantageous because it makes it possible to connect the device to a micro-suction cup outside the wall of the housing by drilling in the latter only a simple round hole of small diameter. In addition, the microvalve also with a coaxial structure is simpler to manufacture and has a minimum size. This provision is valid if the output and the input are coaxial. In this case, the fresh air arrives in a distribution chamber provided in the device, located just at the entrance of the concentric tube.

Selon une disposition connue par le FR A 2 452 059 le ventilateur d'extraction est monté sur la paroi verti­cale d'une hotte ayant un profil en forme de L dont la cheminée verticale d'évacuation est placée au-dessus d'une chambre collectrice des gaz brûlés. Le moteur d'entraîne­ment du ventilateur est donc à axe horizontal ; le ventila­ teur coiffe un orifice prévu sur la cheminée et sa tubulure de sortie orientée vers le haut traverse un boîtier répar­titeur d'air qui ferme la surface supérieure de l'appareil, pour s'emmancher dans le conduit extérieur menant à la mi­croventouse. Le ventilateur est ainsi logé dans l'espace creux entre le sommet de la chambre collectrice, la chemi­née et le répartiteur d'air.According to an arrangement known from FR A 2 452 059 the exhaust fan is mounted on the vertical wall of a hood having an L-shaped profile, the vertical exhaust chimney of which is placed above a collecting chamber burnt gases. The fan drive motor is therefore with a horizontal axis; the ventila teur covers an orifice provided on the chimney and its outlet pipe oriented upwards passes through an air distributor box which closes the upper surface of the appliance, to be fitted in the external duct leading to the micro-suction cup. The fan is thus housed in the hollow space between the top of the collecting chamber, the chimney and the air distributor.

L'évacuation des gaz brûlés et l'admission d'air frais s'effectuent ainsi à la partie supérieure de l'appa­reil, et même si à ce niveau on place un coude orientable pour le raccordement à une microventouse murale, celle-ci doit être nécessairement au moins légèrement au-dessus de l'appareil. Compte tenu du fait que dans un local une chau­dière murale doit être fixée à une certaine hauteur,l'agence­ment du local et du bâtiment ne permettant pas toujours fa­cilement de réaliser le trou du mur un peu plus haut.The evacuation of the burnt gases and the intake of fresh air are thus carried out at the upper part of the appliance, and even if at this level an adjustable elbow is placed for connection to a wall micro-suction cup, it must necessarily be at least slightly above the device. Given the fact that in a room a wall-mounted boiler must be fixed at a certain height, the arrangement of the room and the building does not always allow the hole in the wall to be made a little higher.

L'invention permet de s'affranchir de cet inconvé­nient en ce qu'elle offre la possibilité de raccorder l'ap­pareil à l'extérieur de façon connue par sa partie supérieu­re, mais aussi de façon nouvelle par sa partie arrière au niveau de la hotte, et cela parce que le ventilateur d'ex­traction et son conduit d'évacuation sont orientables sur la cheminée à laquelle est fixé le ventilateur. Cette dis­position rendant inopérant l'habituel répartiteur d'air su­périeur, celui-ci est supprimé, la fonction répartition d'air étant assurée par l'ensemble de la partie supérieure de la chaudière où sont situés l'extracteur et les prises de pression et de ce fait un dispositif complémentaire de sécurité pressostatique apte à agir dans l'une ou l'au­tre des positions de l'extracteur est prévu à l'intérieur de la chaudière.The invention overcomes this disadvantage in that it offers the possibility of connecting the device to the outside in a known manner by its upper part, but also in a new way by its rear part at the level of the hood. , and this because the exhaust fan and its exhaust duct can be oriented on the chimney to which the fan is fixed. This arrangement rendering the usual upper air distributor inoperative, it is eliminated, the air distribution function being provided by the whole of the upper part of the boiler where the extractor and the pressure taps are located and therefore a complementary pressostatic safety device able to act in one or other of the positions of the extractor is provided inside the boiler.

A cet effet un object principal de l'invention consiste en une chaudière étanche à gaz comportant une hotte d'évacuation des gaz brûlés sur la cheminée verticale de laquelle est monté un ventilateur assurant l'extration de ces gaz dans un conduit qui sort par un orifice prévu à la partie supérieure de l'appareil et à l'intérieur d'un conduit de plus grand diamètre, l'espace annulaire entre les deux conduits servant à l'admission d'air frais dans l'enceinte étanche, chaudière selon laquelle la zone supé­rieure de l'appareil au niveau de la hotte est pourvue d'un autre orifice à l'arrière de l'appareil, de même dimension que l'orifice supérieur, la ventilateur d'extraction étant monté de façon orientable sur la cheminée verticale de la hotte pour que son conduit puisse déboucher dans l'orifice supérieur ou dans l'orifice arrière, un bouchon étant adapté à obturer l'un ou l'autre de ces deux orifices non utilisés et un dispositif complémentaire de sécurité pressostatique étant monté et réglé ou taré de façon fixe dans la zone su­périeure pour agir quelle que soit la position du conduit d'évacuation des gaz brûlés.To this end, a main object of the invention consists of a gas-tight boiler comprising a hood for evacuating burnt gases on the vertical chimney of which is fitted a fan ensuring the extraction of these gases in a duct which exits through a hole provided at the top of the device and inside a duct of larger diameter, the annular space between the two ducts serving for the admission of fresh air into the sealed enclosure, boiler according to which the upper zone of the apparatus at the level of the hood is provided with another orifice at the rear of the appliance, of the same dimension as the upper orifice, the extractor fan being mounted in an adjustable manner on the vertical chimney of the hood so that its duct can lead into the upper orifice rear opening, a plug being adapted to close one or the other of these two unused openings and an additional pressostatic safety device being mounted and fixed or tared fixedly in the upper zone to act whatever the position of the flue gas exhaust duct.

Selon une caractéristique particulière de l'invention, une plaque horizontale bordant la base de la hotte sur la face avant et les côtés de l'appareil sépare la zone de la hotte de la zone de l'échangeur et est pourvue d'orifices, les deux parties latérales de la pla­que étant chacune munies d'un seul trou et la partie avant d'au moins deux trous de dimensions différentes et irrégulièrement disposés, ou d'une fente.According to a particular characteristic of the invention, a horizontal plate bordering the base of the hood on the front face and the sides of the apparatus separates the zone of the hood from the zone of the exchanger and is provided with orifices, the two lateral parts of the plate each being provided with a single hole and the front part with at least two holes of different dimensions and irregularly arranged, or a slot.

Selon une autre caractéristique de l'invention une partie centrale du bouchon coopère, quand ledit bouchon est en position d'obturation d'un des ori­fices, avec un conduit menant à la chambre haute-pression d'un pressostat,une pastille d'étanchéité autocollante étant prévue sur le bouchon au droit de l'orifice d'un des conduits qu'il obture quand le bouchon est correctement placé. Avantageusement sur le conduit venant de l'orifice arrière, débouche l'autre conduit venant de l'orifice supé­rieur,une prise de pression étant obturée par le bouchon quand l'autre prise de pression est ouverte et inverse­ment.According to another characteristic of the invention, a central part of the plug cooperates, when said plug is in the closed position of one of the orifices, with a conduit leading to the high-pressure chamber of a pressure switch, a sealing disc adhesive being provided on the plug to the right of the opening of one of the conduits which it closes when the plug is correctly placed. Advantageously, on the conduit coming from the rear orifice, the other conduit coming from the upper orifice opens, a pressure tap being closed by the plug when the other pressure tap is open and vice versa.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre d'une forme de réalisation en référence aux dessins annexés qui représentent schématiquement aux figures 1 à 3 une chaudière respectivement en vue de face, de côté, et de dessus, la figure 4 étant une vue agrandie schématique de la partie supérieure de l'appareil selon la figure 2.Other characteristics and advantages of the invention will emerge from the description which follows of an embodiment with reference to the appended drawings which schematically represent in Figures 1 to 3 a boiler respectively in front, side, and top view , Figure 4 being an enlarged schematic view of the upper part of the apparatus according to Figure 2.

La chaudière représentée sur les fi­gures comporte essentiellement trois zones superposées A, B et C. La zone supérieure A s'étend de la partie supé­rieure de l'appareil à la base de la hotte 1 d'évacuation des gaz brûlés. La zone intermédiaire B englobe le bloc à ailettes 2 du corps de chauffe 3 et la rampe de brûleur 4 avec sa veilleuse 5 et son thermocouple de sécurité 6. La zone inférieure C au-dessous du brûleur renferme les méca­nisme d'admission gaz, les mécanismes de sécurité et de commande, la pompe de circulation, et tous éléments par ailleurs connus en soi et par conséquent non représentés. Les zones A et B forment une enceinte étanche à l'air extérieur. Une plaque inférieure 7 qui forme une séparation entre les zones B et C est donc traversée de façon étanche par les conduits d'alimentation et de raccordement au brûleur 4, à la veilleuse 5 et au thermocouple 6. Le capot avant 8 faisant retour sur le côté fait étanchéité sur les panneaux de côté de l'appareil, sur la plaque 7 et sur une plaque supérieure 9 formant le couvercle de la zone supé­rieure A. Le capot avant 8 est également en appui sur une plaque horizontale 10 qui borde la base de la botte 1 sur la face avant et sur ses côtés, ladite plaque étant munie d'orifices 11, permettant à l'air de passer de la zone A à la zone B. On remarque sur la figure 3 que les parties latérales de la plaque 10 sont chacune munies d'un trou oblong 11 sensiblement en leur milieu tandis que sur la partie avant, deux trous oblongs 11a de dimensions différen­tes sont disposés à proximité l'un de l'autre du côté du ventilateur d'extraction 14, c'est-à-dire au niveau de la zone extérieure à la botte entourant la ventilation, et un trou rond 11b plus petit est disposé de l'autre côté.The boiler shown in the figures essentially comprises three superimposed zones A, B and C. The upper zone A extends from the upper part of the appliance to the base of the hood 1 for discharging the burnt gases. The intermediate zone B includes the fin block 2 of the heating body 3 and the burner ramp 4 with its pilot light 5 and its safety thermocouple 6. The lower zone C below the burner contains the gas intake mechanisms, the safety and control mechanisms, the circulation pump, and all other elements known per se and therefore not shown. Zones A and B form an enclosure airtight to the outside air. A lower plate 7 which forms a separation between zones B and C is therefore crossed in a sealed manner by the supply and connection conduits to the burner 4, to the pilot 5 and to the thermocouple 6. The front cover 8 returning to the side seals on the side panels of the device, on the plate 7 and on an upper plate 9 forming the cover of the upper zone A. The front cover 8 is also supported on a horizontal plate 10 which borders the base of the boot 1 on the front face and on its sides, said plate being provided with orifices 11, allowing air to pass from zone A to zone B. It can be seen in FIG. 3 that the lateral parts of the plate 10 are each provided with an oblong hole 11 substantially in the middle while on the front part, two oblong holes 11a of different dimensions are arranged close to each other on the side of the exhaust fan 14, it i.e. at the level of the area outside the ento boot urant ventilation, and a smaller round hole 11b is disposed on the other side.

Selon des variantes de réalisation non représentées, une ou des fentes peuvent remplacer les trous pour modifier la répartition de l'air.According to variants not shown, one or more slots can replace the holes to modify the air distribution.

La hotte 1 présente un profil en forme de L dont la partie inférieure de forme rectangulaire coiffe le bloc à ailettes 2 et forme une chambre collectrice des gaz brûlés qui s'échappent par une cheminée verticale d'évacuation 12 vers un orifice 13 prévu sur une paroi la­térale de cette cheminée. Sur ledit orifice est fixé par plusieurs vis facilement accessibles un ventilateur d'extraction 14 avec son moteur d'entraînement 15 à axe horizontal. Les gaz brûlés sont extraits par un conduit 16 qui traverse un orifice 17 de plus grand diamètre prévu dans la plaque supérieure 9. Sur l'orifice 17 est monté un conduit d'admission d'air frais 18 coaxial au conduit 16 qui permet le raccordement de l'appareil à une micro­ventouse non représentée prévue dans le mur voisin au dessus de l'appareil. La paroi arrière de la zone A, formant le fond, à l'arrière de la hotte 1, est également pourvue d'un orifice 19 de même diamètre que l'orifice supérieur 17 qui dans le cas représenté est obturé par un bouchon 20 comme on peut le voir plus clairement sur le dessin schéma­tique de la figure 4. Ce bouchon 20 est un couvercle de bouchage qui obture l'orifice arrière 19 non utilisé et qui se compose d'une partie annulaire 21 pour la fixation sur le pourtour de l'orifice 19 et d'une partie centrale contre-emboutie 22, un joint non représenté étant interca­lé entre le bouchon et le fond de la chaudière. Une pas­tille d'étanchéité autocollante 23 est prévue sur le contre-embouti 22. Sur cette pastille est en appui l'ex­trémité ouverte 26 d'un petit conduit 24 menant à la cham­bre haute-pression d'un pressostat non représenté. On notera que la fermeture du bouchon 20 entraîne automatiquement l'obturation de l'ouverture 26 du conduit 24, et qu'aucun montage du bouchon sur l'ouverture 19 n'est possible si la pastille 23 n'est pas en bonne position en face de l'ouverture 26 du conduit 24, localisée dans la zone du conduit d'admission d'air frais 18. Sur ce conduit 24 débouche un autre conduit 25 provenant aussi d'une ouver­ture 27 formant une prise de pression localisée en bordure de l'ouverture 17 dans la zone du conduit d'admission d'air frais 18. Les prises de pression 26 et 27 sont positionnées à la même distance du bord des orifices 19 et 17.The hood 1 has an L-shaped profile, the lower rectangular part of which covers the fin block 2 and forms a collecting chamber for the burnt gases which escape through a vertical exhaust chimney 12 towards an orifice 13 provided on a side wall of this fireplace. On said orifice is fixed by several easily accessible screws an exhaust fan 14 with its drive motor 15 with a horizontal axis. The burnt gases are extracted by a conduit 16 which passes through a larger diameter orifice 17 provided in the upper plate 9. On the orifice 17 is mounted a fresh air intake conduit 18 coaxial with the conduit 16 which allows the connection of the device to a not shown microvalve provided in the neighboring wall above the device. The rear wall of zone A, forming the bottom, behind the hood 1, is also provided with an orifice 19 of the same diameter as the upper orifice 17 which in the illustrated case is closed by a plug 20 as this can be seen more clearly in the schematic drawing in FIG. 4. This plug 20 is a stopper cover which closes the unused rear hole 19 and which consists of an annular part 21 for fixing around the periphery of the orifice 19 and a counter-stamped central part 22, a seal, not shown, being inserted between the plug and the bottom of the boiler. A self-adhesive sealing pad 23 is provided on the countersunk 22. On this pad is supported the open end 26 of a small conduit 24 leading to the high-pressure chamber of a pressure switch not shown. Note that closing the plug 20 automatically closes the opening 26 of the conduit 24, and that no mounting of the plug on the opening 19 is possible if the chip 23 is not in the correct position. opposite the opening 26 of the duct 24, located in the area of the fresh air intake duct 18. On this duct 24 opens another duct 25 also coming from an opening 27 forming a pressure tap located at the edge of the opening 17 in the area of the fresh air intake duct 18. The pressure taps 26 and 27 are positioned at the same distance from the edge of the orifices 19 and 17.

Dans le cas représenté sur les figures l'appareil est raccordé en sortie supérieure c'est-à-dire que le ventilateur d'extraction 14 est fixé sur la hotte 1 de telle sorte que son conduit 16 de sortie des gaz brûlés débouche dans l'ouverture supérieure 17, où il est coiffé, comme on l'a vu, par un conduit d'admission d'air frais 18 . La sortie arrière 19 est alors obturée par le bouchon 20 dont la pastille 23 obture l'ouverture 26 du conduit 24. Par conséquent seule la prise de pres­sion 27 est reliée au pressostat, et détecte la pression d'admission d'air dans la zone A de l'appareil. Par rap­port à la valeur statique de la pression prise en un autre point non représenté de la chambre étanche, le pressostat permet d'obtenir une détection pressostatique proportion­nelle à la vitesse d'écoulement d'air frais par l'ouvertu­re supérieure 17 et par conséquent son débit. L'air ainsi admis dans la zone A par le conduit 18, remplit le volume environnant à la hotte 1 puis pénètre dans la zone B autour du corps de chauffe 3, par les orifices 11. Ces derniers ont pour fonction de réduire le passage de l'air de A à B et d'introduire une perte de charge en même temps que répar­tir le débit sur la périphérie du corps de chauffe.In the case shown in the figures the device is connected to the upper outlet, that is to say that the exhaust fan 14 is fixed to the hood 1 so that its duct 16 for the outlet of the burnt gases opens into the 'upper opening 17, where it is capped, as we have seen, by a fresh air intake duct 18. The rear outlet 19 is then closed by the plug 20, the patch 23 of which closes the opening 26 of the conduit 24. Consequently only the pressure tap 27 is connected to the pressure switch, and detects the air intake pressure in the zone A of the device. Relative to the static value of the pressure taken at another point (not shown) of the sealed chamber, the pressure switch makes it possible to obtain a pressostatic detection proportional to the speed of flow of fresh air through the upper opening 17 and consequently its flow. The air thus admitted into the zone A through the conduit 18, fills the surrounding volume in the hood 1 then enters the zone B around the heating body 3, through the orifices 11. The latter have the function of reducing the passage of the air from A to B and introduce a pressure drop at the same time as distributing the flow over the periphery of the heating body.

En cas de mauvais montage du bouchon 20, parceque les vis de fixation sont mal serrées ou que le bou­chon ou son joint est mal positionné, la valeur détectée au pressostat devient très faible puisqu'il y a une fuite par l'orifice découvert du conduit 24, et l'appareil ne peut fonctionner.In the event of incorrect mounting of the plug 20, because the fixing screws are not tightened properly or the plug or its seal is incorrectly positioned, the value detected at the pressure switch becomes very low since there is a leak through the exposed orifice of the duct 24, and the device cannot operate.

Quand on veut raccorder l'appareil en sortie arrière, il suffit de dévisser le ventilateur d'extrac­tion 14 de la cheminée verticale 12 à laquelle il est fixé, puis de le faire pivoter pour que le conduit 16 d'évacuation des gaz brûlés se place en position horizontale vers le cen­tre de l'ouverture arrière 19. Le bouchon 20 a préalable­ment été ôté de cette ouverture et fixé sur l'ouverture su­périeure 17, de la même façon, pour que la pastille d'étan­chéité 23 vienne obturer la prise de pression 27. Dans ce cas c'est alors la prise de pression 26 qui est ouverte et fait communiquer le conduit 24 avec le pressostat.When you want to connect the device to the rear outlet, simply unscrew the exhaust fan 14 from the vertical chimney 12 to which it is fixed, then rotate it so that the conduit 16 for evacuating the burnt gases is placed in a horizontal position towards the center of the rear opening 19. The plug 20 has previously been removed from this opening and fixed on the upper opening 17, in the same way, so that the sealing pad 23 comes to close the socket pressure 27. In this case, the pressure tap 26 is then opened and communicates the conduit 24 with the pressure switch.

L'admission d'air frais se fait alors coaxialement au conduit de sortie 16 par un conduit exté­rieur raccordé à la microventouse voisine. La paroi de la cheminée 12 sur laquelle est fixée le ventilateur d'extrac­tion est, comme on le voit aux figures 1 et 3, inclinée de quelques degrés par rapport à un plan vertical parallèle aux parois latérales de l'appareil. Cette particularité permet de disposer l'orifice arrière 19 décentré par rap­port au plan médian de la chaudière.The admission of fresh air is then done coaxially to the outlet duct 16 by an external duct connected to the neighboring microwell. The wall of the chimney 12 on which the extraction fan is fixed is, as seen in Figures 1 and 3, inclined a few degrees relative to a vertical plane parallel to the side walls of the device. This feature makes it possible to have the rear orifice 19 off-center relative to the central plane of the boiler.

Ainsi quelle que soit la façon dont on souhaite raccorder l'appareil en partie supérieure ou en partie arrière, on dispose d'un dispositif fixe de sécurité pressostatique adaptable sans changement aux deux positions d'alimentation en air et d'un bouchon obturateur approprié qui se fixe indifféremment sur l'une ou l'autre des ouver­tures de sortie possible. En outre la séparation complémen­taire introduite entre la zone A et la zone B, qui est munie d'orifices de passage d'air judicieusement disposés évite l'emploi d'un boîtier répartiteur d'air ce qui simplifie notablement la réalisation de l'appareil.So whatever the way you want to connect the device at the top or at the back, there is a fixed pressostatic safety device adaptable without change to the two air supply positions and a suitable plug which attaches to either of the possible outlet openings. In addition, the additional separation introduced between zone A and zone B, which is provided with judiciously arranged air passage orifices, avoids the use of an air distributor box which considerably simplifies the construction of the apparatus. .

Claims (9)

1.- Chaudière étanche à gaz comportant une hotte d'évacuation des gaz brûlés sur la cheminée verticale de laquelle est monté un ventilateur assurant l'extraction de ces gaz dans un conduit qui sort par un orifice prévu à la partie supérieure de l'appareil et à l'intérieur d'un conduit de plus grand diamètre, l'espace annulaire entre les deux conduits servant à l'admission d'air frais dans l'enceinte étanche de la chaudière caractérisée en ce que la zone supérieure A de l'appareil au niveau de la hotte (1) est pourvue d'un autre orifice (19) à l'arrière de l'appa­reil, de même dimension que l'orifice supérieur (17), en ce que le ventilateur d'extraction (14) est monté de façon orien­table sur la cheminée verticale (12) de la hotte pour que son conduit (16) puisse déboucher dans l'orifice supérieur ou dans l'orifice arrière, un bouchon (20) étant adapté à obturer l'un ou l'autre de ces deux orifices non utilisé , et en ce que un dispositif complémentaire de sécurité pressostatique (23, 24, 25) est monté et réglé ou taré de façon fixe dans la zone A pour agir quelle que soit la position du conduit d'évacuation des gaz brûlés.1.- Gas tight boiler comprising a hood for evacuating the burnt gases on the vertical chimney of which is fitted a fan ensuring the extraction of these gases in a duct which exits through an orifice provided at the top of the appliance and inside a larger diameter duct, the annular space between the two ducts serving for the admission of fresh air into the sealed enclosure of the boiler, characterized in that the upper zone A of the appliance at the hood (1) is provided with another opening (19) at the rear of the appliance, of the same dimension as the upper opening (17), in that the exhaust fan (14 ) is mounted in an orientable manner on the vertical chimney (12) of the hood so that its duct (16) can open into the upper or rear hole, a plug (20) being adapted to close off one or the other of these two ports not used, and in that an additional pressostatic safety device (23, 2 4, 25) is fixedly mounted and adjusted or tared in zone A to act whatever the position of the flue gas evacuation pipe. 2.- Chaudière selon la revendication 1, caractérisée en ce que le ventilateur d'extraction (14) portant son moteur d'entraînement (15) est fixé à la chemi­née verticale (12) de la hotte (1) par des vis facilement accessibles, dans l'une ou l'autre de ses deux positions possibles.2.- Boiler according to claim 1, characterized in that the exhaust fan (14) carrying its drive motor (15) is fixed to the vertical chimney (12) of the hood (1) by easily accessible screws , in one or other of its two possible positions. 3.- Chaudière selon la revendication 1, caractérisée en ce qu'une plaque horizontale (10) qui borde la base de la hotte (1) sur la face avant et les côtés de l'appareil sépare la zone A de la zone B et est pourvue d'orifices (11).3.- Boiler according to claim 1, characterized in that a horizontal plate (10) which borders the base of the hood (1) on the front face and the sides of the appliance separates zone A from zone B and is provided with orifices (11). 4.- Chaudière selon la revendication 3, caractérisée en ce que les deux parties latérales de la plaque (10) sont chacune munie d'un seul trou et la partie avant d'au moins deux trous (11a, 11b) de dimensions différentes.4.- Boiler according to claim 3, characterized in that the two lateral parts of the plate (10) are each provided with a single hole and the front part with at least two holes (11a, 11b) of different dimensions. 5.- Chaudière selon la revendication 4, caractérisée ce que les trous (11a, 11b) prévus sur la partie avant de la plaque (10) sont irrégulièrement disposés sur ladite plaque.5. A boiler according to claim 4, characterized in that the holes (11a, 11b) provided on the front part of the plate (10) are irregularly arranged on said plate. 6.- Chaudière selon la revendication 1, caractérisée en ce qu'une partie centrale (22) du bouchon (20) coopère, quand ledit bouchon est en position d'obtu­ration d'un des orifices (17, 19), avec un conduit (24, 25) menant à la chambre haute-pression d'un pressostat.6.- Boiler according to claim 1, characterized in that a central part (22) of the plug (20) cooperates, when said plug is in the closed position of one of the orifices (17, 19), with a conduit (24, 25) leading to the high-pressure chamber of a pressure switch. 7.- Chaudière selon la revendication 6, caractérisée en ce qu'une pastille d'étanchéité autocollante (23) est prévue sur le bouchon (20) au droit de l'orifice d'un des conduits (24, 25) qu'il obture quand le bouchon est correctement placé.7.- Boiler according to claim 6, characterized in that an adhesive sealing disc (23) is provided on the plug (20) in line with the orifice of one of the conduits (24, 25) that closes when the cap is correctly placed. 8.- Chaudière selon l'une quelconque des revendications 1 à 6, caractérisée en ce que sur le conduit (24) venant de l'orifice arrière (19), débouche l'autre conduit (25) venant de l'orifice supérieur (17),une prise de pression (26) étant obturée par le bouchon (20) quand l'autre prise de pression (27) est ouverte et inversement.8.- Boiler according to any one of claims 1 to 6, characterized in that on the conduit (24) coming from the rear orifice (19), opens the other conduit (25) coming from the upper orifice ( 17), a pressure tap (26) being closed by the plug (20) when the other pressure tap (27) is open and vice versa. 9.- Chaudière selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les prises de pression (26) et (27) sont positionnées à la même dis­tance du bord de l'orifice (19) et de l'orifice (17) dans la zone du conduit d'admission d'air frais (18).9.- Boiler according to any one of claims 1 to 8, characterized in that the pressure taps (26) and (27) are positioned at the same distance from the edge of the orifice (19) and the orifice (17) in the area of the fresh air intake duct (18).
EP19890400002 1988-01-05 1989-01-02 Gas boiler of the gas-tight type with an adjustable exhaust gas ventilator, and associated pressure switch-controlled security system Expired - Lifetime EP0323921B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8800024 1988-01-05
FR8800024A FR2625550B1 (en) 1988-01-05 1988-01-05 WATERPROOF GAS BOILER WITH ORIENTABLE EXTRACTION FAN AND PRESSOSTATIC SAFETY SYSTEM THEREOF

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EP0323921A1 true EP0323921A1 (en) 1989-07-12
EP0323921B1 EP0323921B1 (en) 1991-05-29

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EP19890400002 Expired - Lifetime EP0323921B1 (en) 1988-01-05 1989-01-02 Gas boiler of the gas-tight type with an adjustable exhaust gas ventilator, and associated pressure switch-controlled security system

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EP (1) EP0323921B1 (en)
DE (1) DE68900086D1 (en)
ES (1) ES2022749B3 (en)
FR (1) FR2625550B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242264A (en) * 1990-03-23 1991-09-25 Nuovo Pignone Spa Wall-mounted gas boiler
FR2692656A1 (en) * 1992-06-18 1993-12-24 Joetul As Device for opening a smoke exhaust from a stove.
EP0811811A2 (en) * 1996-06-07 1997-12-10 OCEAN IDROCLIMA S.p.A. Wall-mounted boiler with a sealed chamber
EP1180644A2 (en) * 2000-08-18 2002-02-20 Vaillant GmbH Exhaust pipe connection for heating apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1281313A (en) * 1960-11-24 1962-01-12 Ideal Standard Gas-heated appliance with chimney connection, in particular central heating boiler
FR2373752A1 (en) * 1976-12-09 1978-07-07 Leblanc Sa E L M IMPROVEMENTS FOR SUCTION EXTRACTORS FOR COMBUSTION APPLIANCES
FR2452059A1 (en) * 1979-03-21 1980-10-17 Saunier Duval DEVICE FOR EXHAUSTING BURNED GASES AND FOR SUPPLYING FRESH AIR FOR GAS WATERTIGHT APPLIANCES

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1281313A (en) * 1960-11-24 1962-01-12 Ideal Standard Gas-heated appliance with chimney connection, in particular central heating boiler
FR2373752A1 (en) * 1976-12-09 1978-07-07 Leblanc Sa E L M IMPROVEMENTS FOR SUCTION EXTRACTORS FOR COMBUSTION APPLIANCES
FR2452059A1 (en) * 1979-03-21 1980-10-17 Saunier Duval DEVICE FOR EXHAUSTING BURNED GASES AND FOR SUPPLYING FRESH AIR FOR GAS WATERTIGHT APPLIANCES

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2242264A (en) * 1990-03-23 1991-09-25 Nuovo Pignone Spa Wall-mounted gas boiler
FR2692656A1 (en) * 1992-06-18 1993-12-24 Joetul As Device for opening a smoke exhaust from a stove.
EP0811811A2 (en) * 1996-06-07 1997-12-10 OCEAN IDROCLIMA S.p.A. Wall-mounted boiler with a sealed chamber
EP0811811A3 (en) * 1996-06-07 1998-12-09 OCEAN IDROCLIMA S.p.A. Wall-mounted boiler with a sealed chamber
EP1180644A2 (en) * 2000-08-18 2002-02-20 Vaillant GmbH Exhaust pipe connection for heating apparatus
EP1180644B1 (en) * 2000-08-18 2006-04-19 Vaillant GmbH Exhaust pipe connection for heating apparatus

Also Published As

Publication number Publication date
ES2022749B3 (en) 1991-12-01
EP0323921B1 (en) 1991-05-29
DE68900086D1 (en) 1991-07-04
FR2625550A1 (en) 1989-07-07
FR2625550B1 (en) 1990-06-08

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