FR2514869A2 - Fuel and air supply for gas heated boiler - has top cover with air entry between tube and flue gas outlet - Google Patents

Fuel and air supply for gas heated boiler - has top cover with air entry between tube and flue gas outlet Download PDF

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Publication number
FR2514869A2
FR2514869A2 FR8119454A FR8119454A FR2514869A2 FR 2514869 A2 FR2514869 A2 FR 2514869A2 FR 8119454 A FR8119454 A FR 8119454A FR 8119454 A FR8119454 A FR 8119454A FR 2514869 A2 FR2514869 A2 FR 2514869A2
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FR
France
Prior art keywords
air
gas
tube
chamber
diameter part
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
FR8119454A
Other languages
French (fr)
Other versions
FR2514869B2 (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
Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Priority to FR8119454A priority Critical patent/FR2514869B2/en
Priority to DE8181401769T priority patent/DE3165113D1/en
Priority to JP50354881A priority patent/JPS6367113B2/ja
Priority to PCT/FR1981/000142 priority patent/WO1982001764A1/en
Priority to AT81401769T priority patent/ATE8705T1/en
Priority to EP19810401769 priority patent/EP0052055B1/en
Publication of FR2514869A2 publication Critical patent/FR2514869A2/en
Application granted granted Critical
Publication of FR2514869B2 publication Critical patent/FR2514869B2/en
Expired legal-status Critical Current

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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
    • F24H9/02—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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/403—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the water tubes being arranged in one or more circles around the burner

Abstract

The gas heated boiler with a cylindrical casing (1) enclosing a ring of vertical water tubes (7) has the gas and air mixture forced upwards from below to a radial burner (6) in the upper part of the combustion chamber. The air and gas entry chamber is at one side, containing a venturi tube (12) with its axis parallel to that of the burner. An air entry chamber (11) is also formed by a cover (18) over the top, with a large diameter part over the combustion chamber and a small diameter part over the venturi tube. The large diameter part has a hole through it for the exhaust gas outlet (16) and also has an outer tube (17) around it, with a space (20) between for fresh air entry. The gas supply tube (21) passes through another hole in the small diameter part, to discharge into the venturi tube.

Description

,L'invention concerne une chaudière étanche a gaz du type a echan- geur cylindrique dont une nappe de tubes d'eau entoure une chambre de combustion renfermant un brûleur a air souffle.The invention relates to a gas-tight boiler of the cylindrical exchanger type, a sheet of water tubes surrounding a combustion chamber containing a blast air burner.

La chaudière étanche conformément au brevet principal comporte une botte a air de forme oblongue plate, qui reçoit l'air comburant par un orifice concentrique au tube d'évacuation des gaz brûlés et l'évacue par un orifice de plus petit diamètre prevu sur le fond du bottier de l'autre catie et qui s'adapte sur la coquille d'étanchéité enveloppant la chambre de combustion, dont elle constitue le couvercle.The sealed boiler according to the main patent comprises an air boot of oblong flat shape, which receives the combustion air through an orifice concentric with the flue gas discharge tube and discharges it through a smaller diameter orifice provided on the bottom. from the bootmaker of the other catie and which fits on the sealing shell enveloping the combustion chamber, of which it constitutes the cover.

Cette bofte oblongue est munie d'un orifice latéral par lequel l'air passe dans la chambre de mélange dans laquelle est injecte le gaz, le melange étant ensuite admis au brûleur par l'interme- diaire du ventilateur d'extraction.This oblong box is provided with a lateral orifice through which the air passes into the mixing chamber into which the gas is injected, the mixture then being admitted to the burner by means of the exhaust fan.

Pour faciliter la réalisation de la chambre de mélange et eviter une admission du gaz par le haut -comme prévu dans le brevet principal- ce qui peut présenter un inconvénient sur le plan de la sécurité et sur le plan du montage car elle exige la montée d'un tube d'admission a partir de la base de l'appareil, la où aboutit généralement la tubulure d'arrivée de gaz, l'invention propose un dispositif consistant a injecter le gaz directement a la base de la chambre verticale d'arrivée d'air et de disposer le venturi juste en amont du ventilateur.To facilitate the realization of the mixing chamber and to avoid a gas inlet from above - as provided in the main patent - which can present a drawback in terms of safety and in terms of assembly because it requires the rise of an inlet tube from the base of the device, where the gas inlet pipe generally ends, the invention provides a device consisting in injecting the gas directly at the base of the vertical inlet chamber of air and have the venturi just upstream of the fan.

Selon l'invention l'injection de gaz, s'effectue horizontalement a la base d'un prolongement de la chambre verticale d'arrive d'air au-dessous du niveau de l'échangeur, en face d'un venturi dispose horizontalement débouchant la base de ce prolongement.According to the invention, the gas injection takes place horizontally at the base of an extension of the vertical air inlet chamber below the level of the exchanger, opposite a venturi which has horizontally opening out the basis of this extension.

D'autres caractéristiques particulières et avantages de l'invention apparattront a la lecture de la description suivante d'une forme de réalisation conformément au dessin annexe qui représente une vue en coupe schématique de l'échangeur.Other particular characteristics and advantages of the invention will appear on reading the following description of an embodiment in accordance with the appended drawing which represents a schematic sectional view of the exchanger.

La partie centrale de la figure 1 montre un échangeur délimi té- par une coquille cylindrique 1 qui repose sur un socle inferieur 2 perce d'orifices appropries pour le passage de conduits 3 et 4 d'arrive et de depart d'eau, et de la tubulure 5 d'admis sion du mélange gazeux au brûleur radial 6 dispose au centre de l'échangeur. A l'intérieur de la coquille sont disposés verticalement les tubes d'eau 7 qui forment une nappe cylindrique tout autour du brûleur 6, leur forme et leur espacement etant déterminé pour présenter des surfaces d'échange importantes avec les gaz de combustion.L'eau circule dans les tubes de la nappe a partir d'un anneau répartiteur inférieur 8 vers un anneau reparti- teur superieur 9 et inversement, grace a un Jeu de chicanes non représentées localisées dans les anneaux. Le mélange air-gaz provenant de la chambre de mélange est souffle vers le brûleur par un ventilateur 10 en amont de la tubulure d'admission 5.The central part of FIG. 1 shows an exchanger delimited by a cylindrical shell 1 which rests on a lower base 2 pierces with suitable orifices for the passage of conduits 3 and 4 for the arrival and departure of water, and the manifold 5 for admitting the gas mixture to the radial burner 6 has in the center of the exchanger. Inside the shell are arranged vertically the water tubes 7 which form a cylindrical sheet all around the burner 6, their shape and their spacing being determined to present significant exchange surfaces with the combustion gases. water circulates in the tubes of the sheet from a lower distributor ring 8 to an upper distributor ring 9 and vice versa, thanks to a set of baffles not shown located in the rings. The air-gas mixture coming from the mixing chamber is blown towards the burner by a fan 10 upstream of the intake manifold 5.

Une unique botte de distribution ou boite a air 11, représentée a la aprtie supérieure de la figure 1 a une forme oblongue plate et s'adapte a la fois sur la bordure supérieure de la coquille 1, mais aussi sur la bordure supérieure d'une chambre verticale d'arrivee d'air 12 disposée parallèlement a la coquille et en appui sur un prolongement du socle inférieur 2 ; la boite a air forme un bloc rigide avec l'échangeur. Cette adaptation de la boite a air 11 sur l'échangeur et la chambre d'arrivée d'air se fait évidemment de façon étanche gracie a des Joints d'étanchéité non représentés, au niveau du grand diametre de la boite 11 qui coiffe la coquille cylindrique 1 et du petit diamètre de la boite qui coiffe la chambre d'arrivée d'air 12.A single distribution boot or air box 11, shown at the upper end of FIG. 1 has a flat oblong shape and fits both on the upper edge of the shell 1, but also on the upper edge of a vertical air inlet chamber 12 disposed parallel to the shell and bearing on an extension of the lower base 2; the air box forms a rigid block with the exchanger. This adaptation of the air box 11 on the exchanger and the air inlet chamber is obviously done in a sealed manner thanks to sealing gaskets not shown, at the level of the large diameter of the box 11 which covers the shell. cylindrical 1 and the small diameter of the box which covers the air inlet chamber 12.

La face inférieure 13 de la boîte a air 11 forme a la fois, -le couvercle de la chambre de combustion en coiffant la coquille 1, -et l'entretoise qui maintient la partie supérieure de la chambre d'arrive d'air du fait qu'elle est munie d'un orifice lateral 14 qui s'adapte a l'orifice supérieur de cette chambre. Ladite face inférieure 13 faisant office de couvercle b la commande de combustion est percée d'un orifice 15, au droit du brûleur 6, sur lequel vient s'adapter la tubulure 16 d'evacuation des gaz brûlés. Celleci est disposée de façon connue a l'intérieur et coaxialement a une autre tubulure 17 de plus grand diametre pour l'admission d'air frais.The underside 13 of the air box 11 forms at the same time, the cover of the combustion chamber by covering the shell 1, and the spacer which maintains the upper part of the air intake chamber due to the fact that it is provided with a lateral orifice 14 which adapts to the upper orifice of this chamber. Said lower face 13 acting as a cover b the combustion control is pierced with an orifice 15, to the right of the burner 6, on which is fitted the pipe 16 for discharging the burnt gases. This is arranged in a known manner inside and coaxially with another tube 17 of larger diameter for the admission of fresh air.

La chambre d'arrive d'air 12 est munie d'un prolongement 22 dont la partie inférieure est raccordée par un venturi 23 au ventilateur 10 ; le col 24 du venturi se trouve sensiblement au niveau de ce prolongement 22, Un injecteur de gaz 26 dispose horizontalement a la hauteur du col 24 du venturi permet l'injection de gaz et son mélange a l'air dans le venturi 23. L'injecteur est alimente par le tube d'arrive de gaz 25. The air inlet chamber 12 is provided with an extension 22, the lower part of which is connected by a venturi 23 to the fan 10; the neck 24 of the venturi is located substantially at the level of this extension 22, a gas injector 26 arranged horizontally at the height of the neck 24 of the venturi allows the injection of gas and its mixture with air in the venturi 23. The injector is supplied by the gas inlet tube 25.

Claims (2)

RevendicationsClaims 10/ Chaudière étanche du typera echangeur cylindrique dans10 / Sealed boiler of the cylindrical exchanger typera in laquelle l'admission d'air frais au brûleur s'effectue a which the intake of fresh air to the burner is partir d'une boite a air de forme appropriée qui s'adapte from a suitably shaped air box that fits à la partie supérieure de la coquille cylindrique envelop at the top of the cylindrical shell envelop pant la nappe de tubes d'eau et lui sert de couvercle et pant the sheet of water tubes and serves as a cover and qui dirige l'air admis vers une chambre disposée verti which directs the admitted air to a vertically arranged room calement le long de l'échangeur conformément à la revendi securely along the exchanger in accordance with the resale cation 1 du brevet principal, caractérisée par le fait cation 1 of the main patent, characterized by the fact que ladite chambre verticale d'arrive d'air(l2)est munie that said vertical air inlet chamber (l2) is provided d'un prolongement(22)dont la partie inférieure est raccor an extension (22) the lower part of which is connected dée au ventilateur (10) par un venturi (23) dans lequel delivered to the fan (10) by a venturi (23) in which s'effectue le mélange de l'air et du gaz admis par l'injec the air and gas admitted by the injector are mixed teur (26). (26). 20/ Chaudière selon la revendication 1 caracteriseepar le fait que20 / Boiler according to claim 1 characterized by the fact that l'injecteur de gaz (26) est dispose horizontalement au niveau the gas injector (26) is arranged horizontally at the level du col (124) du venturi lui-même au niveau du prolongement the neck (124) of the venturi itself at the level of the extension (22) de la chambre d'arrivée d'air (12).  (22) of the air intake chamber (12).
FR8119454A 1980-11-07 1981-10-16 WATERPROOF BOILER WITH CYLINDRICAL EXCHANGER Expired FR2514869B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR8119454A FR2514869B2 (en) 1981-10-16 1981-10-16 WATERPROOF BOILER WITH CYLINDRICAL EXCHANGER
DE8181401769T DE3165113D1 (en) 1980-11-07 1981-11-06 Boiler with sealed combustion chamber and cylindric heat exchanger
JP50354881A JPS6367113B2 (en) 1980-11-07 1981-11-06
PCT/FR1981/000142 WO1982001764A1 (en) 1980-11-07 1981-11-06 Steamtight boiler with cylindrical exchanger
AT81401769T ATE8705T1 (en) 1980-11-07 1981-11-06 BOILER WITH CLOSED COMBUSTION CHAMBER AND CYLINDRICAL HEAT EXCHANGER.
EP19810401769 EP0052055B1 (en) 1980-11-07 1981-11-06 Boiler with sealed combustion chamber and cylindric heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8119454A FR2514869B2 (en) 1981-10-16 1981-10-16 WATERPROOF BOILER WITH CYLINDRICAL EXCHANGER

Publications (2)

Publication Number Publication Date
FR2514869A2 true FR2514869A2 (en) 1983-04-22
FR2514869B2 FR2514869B2 (en) 1986-07-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8119454A Expired FR2514869B2 (en) 1980-11-07 1981-10-16 WATERPROOF BOILER WITH CYLINDRICAL EXCHANGER

Country Status (1)

Country Link
FR (1) FR2514869B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371642A1 (en) * 1976-11-19 1978-06-16 Leblanc Sa E L M Hot water boiler for central heating - has finned surface of heat exchange arranged to keep flue gas temp. constant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371642A1 (en) * 1976-11-19 1978-06-16 Leblanc Sa E L M Hot water boiler for central heating - has finned surface of heat exchange arranged to keep flue gas temp. constant

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Publication number Publication date
FR2514869B2 (en) 1986-07-25

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