EP0051516A1 - Tight chamber of a heat exchanger with a mantle consisting of straight water pipes arranged concentrically around a central burner - Google Patents

Tight chamber of a heat exchanger with a mantle consisting of straight water pipes arranged concentrically around a central burner Download PDF

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Publication number
EP0051516A1
EP0051516A1 EP81401624A EP81401624A EP0051516A1 EP 0051516 A1 EP0051516 A1 EP 0051516A1 EP 81401624 A EP81401624 A EP 81401624A EP 81401624 A EP81401624 A EP 81401624A EP 0051516 A1 EP0051516 A1 EP 0051516A1
Authority
EP
European Patent Office
Prior art keywords
sealed chamber
shell
chamber according
heat exchanger
arranged concentrically
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
EP81401624A
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German (de)
French (fr)
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EP0051516B1 (en
Inventor
Jean-Claude Charron
Philippe Mulsant
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 date
Application filed by Saunier Duval Eau Chaude Chauffage SDECC SA filed Critical Saunier Duval Eau Chaude Chauffage SDECC SA
Publication of EP0051516A1 publication Critical patent/EP0051516A1/en
Application granted granted Critical
Publication of EP0051516B1 publication Critical patent/EP0051516B1/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
    • 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
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • 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 relates to domestic hot water central heating boilers heated by gas and more specifically relates to a sealed chamber for heat exchangers of the water tube type surrounding a central burner.
  • the combustion chamber contains a blown air burner, the gases of which are emitted radially and pass through the cylindrical layer of water tubes with which the heat exchanges take place.
  • the tubes are obviously dimensioned and arranged so as to obtain a laminar flow of gases, and large exchange surfaces with them.
  • These tubes are themselves housed in a sealed chamber consisting of a shell, the upper part of which communicates with a discharge duct.
  • the combustion products are therefore collected by this shell which forms an outer envelope around the combustion chamber.
  • This shell usually made, like all the enclosures of combustion chambers, made of rigid sheet metal, is subjected to vibrations due to compression waves emitted when the burner is ignited and maintained by the flame front thereof.
  • the waterproof shell forming the outer chamber is made of a flexible or semi-rigid light material of the rubberized canvas or plastic sheet type which has sealing and temperature resistance characteristics. , for a low cost price, at least equivalent to solid materials such as metallic fabrics, and which, by preventing the reflection of sound pressure waves originating from thermodynamic phenomena linked to the high thermal gradients originating from combustion, prevent formation and the maintenance of sound oscillations.
  • a blown air burner 1 In the center of the exchanger is a blown air burner 1 from which the air-gas mixture admitted by the lower pipe 2 escapes radially.
  • the water tubes 3 form a cylindrical layer all around the burner; their shape and spacing is determined to present significant exchange surfaces with the combustion gases.
  • Water circulates in the tubes of the sheet from a lower distributor ring 4 to an upper distributor ring 5 and vice versa, thanks to a set of baffles not shown, located in the rings.
  • the arrival of cold water and the departure of hot water, at the level of the lower distributor is ensured respectively by the conduits 6 and 7.
  • This cylindrical exchanger is housed in a sealed chamber which is used to collect the combustion gases passing through the tablecloth of tubes 3 and discharges them through an upper orifice 8.
  • the chamber is produced as follows.
  • a round lower base 9 supports the exchanger proper via the distributor ring 4 and the burner. It is pierced with suitable orifices for the passage of the conduits 6 and 7 for the arrival and departure of water, for the passage of the tube 2 for the arrival of the gaseous mixture and for possibly the evacuation of condensation water.
  • the base 9 also serves to support a cylindrical frame formed by two hoops 10 connected by a few vertical spacers 11. This frame is wrapped in a flexible or semi-rigid material 12, of the rubber or silicone type which constitutes the sealed circular shell of the chamber and which has good sealing and temperature resistance characteristics, for a low cost price.
  • the frame is further capped with a cover 13 provided with the discharge orifice 8. It is thus fitted between the cover and the base, the sealing being ensured by the folding of the flexible material 12 on the edge of the hoops.
  • This flexible shell 12 thanks to its low mass and its relative flexibility, prevents reflection and maintenance of sound oscillations, which eliminates noise.
  • the envelope flexible 12 is stretched directly between the cover and the base, provided for this purpose with grooves and / or various suitable hooking members. This attachment obviously provides the seal between the flexible shell, the cover and the base.

Abstract

La coquille (12) formant la chambre étanche est réalisée en une matière souple ou semi-rigide légère du genre caoutchouc ou toile mince siliconée, qui absorbe, grâce à sa faible masse et à sa relative souplesse, toutes les vibrations engendrées et entretenues par les brûleurs (1), ce qui élimine les bruits.The shell (12) forming the sealed chamber is made of a flexible or semi-rigid light material such as rubber or thin silicone fabric, which absorbs, thanks to its low mass and its relative flexibility, all the vibrations generated and maintained by the burners (1), which eliminates noise.

Description

L'invention se rapporte aux chaudières domestiques de chauffage central à eau chaude chauffées par le gaz et concerne plus précisément une chambre étanche pour échangeurs de chaleur du type à tubes d'eau entourant un brûleur central.The invention relates to domestic hot water central heating boilers heated by gas and more specifically relates to a sealed chamber for heat exchangers of the water tube type surrounding a central burner.

La chambre de combustion renferme un brûleur à air soufflé dont les gaz sont émis radialement et traversent la nappe cylindrique de tubes d'eau avec lesquels s'effectuent les échanges thermiques. Les tubes sont évidemment dimensionnés et disposés de façon à obtenir un écoulement laminaire des gaz, et des surfaces d'échange importantes avec eux. Ces tubes sont eux-mêmes logés dans une chambre étanche constituée d'une coquille dont la partie supérieure communique avec un conduit d'évacuation. Les produits de combustion sont donc recueillis par cette coquille qui forme une enveloppe extérieure autour de la chambre de combustion. Cette coquille habituellement réalisée, -comme toutes les enceintes des chambres de combustion- en tôle rigide, est soumise à des vibrations dues aux ondes de compression émises lors de l'allumage du brûleur et entretenues par le front de flammes de celui-ci. Ces ondes se réfléchissent sur la paroi rigide de la coquille qui par un phénomène de résonance émettent un bruit continu, d'intensité élevée, qui ne peut .:être admis pour des appareils à fonctionnement permanent. L'invention propose une solution qui évite ces inconvénients en ce que la coquille étanche formant la chambre extérieure est réalisée en une matière souple ou semi-rigide légère du genre toile caoutchoutée ou feuille plastique qui présente des caractéristiques d'étanchéité et de tenue en température, pour un faible prix de revient, au moins équivalentes aux matériaux solides comme les toiles métalliques, et qui, -en empêchant la réflexion des ondes de pression sonore issues des phénomènes thermodynamiques liés aux gradients thermiques élevés provenant de la combustion, -empêchent la formation et l'entretien d'oscillations sonores.The combustion chamber contains a blown air burner, the gases of which are emitted radially and pass through the cylindrical layer of water tubes with which the heat exchanges take place. The tubes are obviously dimensioned and arranged so as to obtain a laminar flow of gases, and large exchange surfaces with them. These tubes are themselves housed in a sealed chamber consisting of a shell, the upper part of which communicates with a discharge duct. The combustion products are therefore collected by this shell which forms an outer envelope around the combustion chamber. This shell, usually made, like all the enclosures of combustion chambers, made of rigid sheet metal, is subjected to vibrations due to compression waves emitted when the burner is ignited and maintained by the flame front thereof. These waves are reflected on the rigid wall of the shell which, by a phenomenon of resonance, emits a continuous noise, of high intensity, which cannot be admitted for devices with permanent operation. The invention proposes a solution which avoids these drawbacks in that the waterproof shell forming the outer chamber is made of a flexible or semi-rigid light material of the rubberized canvas or plastic sheet type which has sealing and temperature resistance characteristics. , for a low cost price, at least equivalent to solid materials such as metallic fabrics, and which, by preventing the reflection of sound pressure waves originating from thermodynamic phenomena linked to the high thermal gradients originating from combustion, prevent formation and the maintenance of sound oscillations.

Des caractéristiques particulières et avantages de l'invention apparaîtront à la lecture de la description suivante d'une forme de réalisation en référence au dessin annexé qui représente une vue schématique en coupe de l'échangeur.Special characteristics and advantages of the invention will appear on reading the following description of an embodiment with reference to the appended drawing which represents a schematic sectional view of the exchanger.

Au centre de l'échangeur est disposé un brûleur à air soufflé 1 duquel le mélange air-gaz admis par la tubulure inférieure 2 s'échappe radialement. Les tubes d'eau 3 forment une nappe cylindrique tout autour du brûleur ; leur forme et leur espacement est déterminé pour présenter des surfaces d'échange importantes avec les gaz de combustion. L'eau circule dans les tubes de la nappe à partir d'un anneau répartiteur inférieur 4 vers un anneau répartiteur supérieur 5 et inversement, grâce à un jeu de chicanes non représentées, localisées dans les anneaux. L'arrivée d'eau froide et le départ d'eau chaude, au niveau du répartiteur inférieur est assuré respectivement par les conduits 6 et 7. Cet échangeur cylindrique est logé dans une chambre étanche qui sert à collecter les gaz de combustion traversant la nappe de tubes 3 et les évacue par un orifice supérieur 8. La chambre est réalisée de la façon suivante. Un socle inférieur rond 9 supporte l'échangeur proprement dit par l'intermédiaire de l'anneau répartiteur 4 et le brûleur. Il est percé d'orifices appropriés pour le passage des conduits 6 et 7 d'arrivée et de départ d'eau, pour le passage de la tubulure 2 d'arrivée du mélange gazeux et pour éventuellement l'évacuation d'eau de condensation. Le socle 9 sert également à supporter une armature cylindrique formée de deux cerceaux 10 reliés par quelques entretoises verticales 11. Cette armature est enveloppée d'une matière souple ou semi-rigide 12, du genre caoutchouc ou matière siliconée qui constitue la coquille circulaire étanche de la chambre et qui présente de bonnes caractéristiques d'étanchéité et de tenue en température, pour un faible prix de revient. L'armature est en outre coiffée d'un couvercle 13 muni de l'orifice d'évacuation 8. Elle est ainsi emboîtée entre le couvercle et le socle, l'étanchéité étant assurée par le repli de la matière souple 12 sur le bord des cerceaux. Cette coquille souple 12 grâce à sa faible masse et à sa relative souplesse, empêche la réflexion et l'entretien d'oscillations sonores, ce qui élimine les bruits.In the center of the exchanger is a blown air burner 1 from which the air-gas mixture admitted by the lower pipe 2 escapes radially. The water tubes 3 form a cylindrical layer all around the burner; their shape and spacing is determined to present significant exchange surfaces with the combustion gases. Water circulates in the tubes of the sheet from a lower distributor ring 4 to an upper distributor ring 5 and vice versa, thanks to a set of baffles not shown, located in the rings. The arrival of cold water and the departure of hot water, at the level of the lower distributor is ensured respectively by the conduits 6 and 7. This cylindrical exchanger is housed in a sealed chamber which is used to collect the combustion gases passing through the tablecloth of tubes 3 and discharges them through an upper orifice 8. The chamber is produced as follows. A round lower base 9 supports the exchanger proper via the distributor ring 4 and the burner. It is pierced with suitable orifices for the passage of the conduits 6 and 7 for the arrival and departure of water, for the passage of the tube 2 for the arrival of the gaseous mixture and for possibly the evacuation of condensation water. The base 9 also serves to support a cylindrical frame formed by two hoops 10 connected by a few vertical spacers 11. This frame is wrapped in a flexible or semi-rigid material 12, of the rubber or silicone type which constitutes the sealed circular shell of the chamber and which has good sealing and temperature resistance characteristics, for a low cost price. The frame is further capped with a cover 13 provided with the discharge orifice 8. It is thus fitted between the cover and the base, the sealing being ensured by the folding of the flexible material 12 on the edge of the hoops. This flexible shell 12 thanks to its low mass and its relative flexibility, prevents reflection and maintenance of sound oscillations, which eliminates noise.

L'invention ne se limite pas à cette forme de réalisation mais en englobe au contraire toutes les variantes constructives. Selon une variante de réalisation non représentée, l'enveloppe souple 12 est tendue directement entre le couvercle et le socle, munis à cet effet de rainures et/ou d'organes d'accrochages divers appropriés . Cet accrochage prévoit évidemment l'étanchéité entre la coquille souple, le couvercle et le socle.The invention is not limited to this embodiment but on the contrary encompasses all the constructive variants thereof. According to a variant embodiment not shown, the envelope flexible 12 is stretched directly between the cover and the base, provided for this purpose with grooves and / or various suitable hooking members. This attachment obviously provides the seal between the flexible shell, the cover and the base.

Claims (5)

1. Chambre étanche d'échangeur de chaleur cylindrique à tubes d'eau disposés concentriquement à un brûleur à air soufflé, comportant un socle inférieur (9) et un couvercle supérieur (13) pour le maintien des tubes (3) ainsi qu'une coquille extérieure étanche enveloppant les tubes d'eau et débouchant sur une cheminée (8) pour le recueil et l'évacuation des produits de combustion caractérisé en ce que la coquille extérieure est constituée d'une matière souple étanche et très légère (12) du genre toile caoutchoutée ou feuille plastique étanche aux.gaz qui, -en empêchant la réflexion des ondes de pression sonore issues des phénomènes thermodynamiques liés aux gradients thermiques élevés provenant de la combustion, -empêchent la formation et l'entretien d'oscillations sonores.1. Sealed chamber of cylindrical heat exchanger with water tubes arranged concentrically with a supply air burner, comprising a lower base (9) and an upper cover (13) for holding the tubes (3) together with a waterproof outer shell enveloping the water tubes and opening onto a chimney (8) for collecting and evacuating combustion products, characterized in that the outer shell is made of a flexible waterproof and very light material (12) of the such as a rubberized canvas or gas-tight plastic sheet which, by preventing the reflection of sound pressure waves from thermodynamic phenomena linked to high thermal gradients from combustion, prevents the formation and maintenance of sound oscillations. 2. Chambre étanche selon la revendication 1 caractérisée par le fait que la coquille est montée sur une armature cylindrrque qui sert de support et qui la positionne de façon étanche entre un couvercle supérieur (13) et un socle inférieur (9).2. Sealed chamber according to claim 1 characterized in that the shell is mounted on a cylindrical frame which serves as a support and which positions it sealingly between an upper cover (13) and a lower base (9). 3. Chambre étanche selon les revendications 1 et 2 caractérisée par le fait que l'armature cylindrique est formée de deux cerceaux (10) reliés pa-quelques entretoises verticales (11).3. Sealed chamber according to claims 1 and 2 characterized in that the cylindrical frame is formed of two hoops (10) connected pa-some vertical spacers (11). 4. Chambre étanche selon les revendications 1 et 2 et 3 caractérisée par le fait que l'étanchéité entre l'armature, le socle (9) et le couvercle (13) est assurée par le repli de la matière souple sur le bord des cerceaux (10).4. sealed chamber according to claims 1 and 2 and 3 characterized in that the seal between the frame, the base (9) and the cover (13) is provided by the folding of the flexible material on the edge of the hoops (10). 5. Chambre étanche selon la revendication 1 caractérisée par le fait que la coquille est tendue entre le couvercle supérieur (13) et le socle inférieur (9) auxquels elle est directement accrochée de façon étanche par des moyens appropriés.5. Sealed chamber according to claim 1 characterized in that the shell is stretched between the upper cover (13) and the lower base (9) to which it is directly hung in a sealed manner by suitable means.
EP81401624A 1980-10-31 1981-10-16 Tight chamber of a heat exchanger with a mantle consisting of straight water pipes arranged concentrically around a central burner Expired EP0051516B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8023288A FR2493483A1 (en) 1980-10-31 1980-10-31 WATER HEAT EXCHANGER SEALED CHAMBER OF LONGITUDINAL WATER TUBES LOCATED CONCENTRICALLY AT CENTRAL BURNER
FR8023288 1980-10-31

Publications (2)

Publication Number Publication Date
EP0051516A1 true EP0051516A1 (en) 1982-05-12
EP0051516B1 EP0051516B1 (en) 1984-07-11

Family

ID=9247521

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EP81401624A Expired EP0051516B1 (en) 1980-10-31 1981-10-16 Tight chamber of a heat exchanger with a mantle consisting of straight water pipes arranged concentrically around a central burner

Country Status (6)

Country Link
US (1) US4444155A (en)
EP (1) EP0051516B1 (en)
JP (1) JPS57131961A (en)
DE (1) DE3164756D1 (en)
ES (1) ES506521A0 (en)
FR (1) FR2493483A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534005A1 (en) * 1982-10-05 1984-04-06 Sdecc ARRANGEMENT OF A FORCE DRAIN GAS BOILER
GB2144526A (en) * 1983-06-29 1985-03-06 Marston Palmer Ltd Flexible heated containers
FR2577309A1 (en) * 1985-02-13 1986-08-14 Sdecc MODULATING GAS BOILER OF THE CONDENSING SEAL TYPE WITH SILENT OPERATION.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365888A (en) * 1993-08-02 1994-11-22 Gas Research Institute Fluid heater and method
US5713310A (en) * 1996-04-22 1998-02-03 Clarke Industries, Inc. Heat exchanger for pressure washer
ITMO20070199A1 (en) 2007-06-13 2008-12-14 A M S R L HEAT EXCHANGER FOR BOILER, METHOD AND TOOL FOR ITS REALIZATION
WO2013055431A1 (en) * 2011-10-10 2013-04-18 Intellihot Green Technologies, Inc. Combined gas-water tube hybrid heat exchanger

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100344B2 (en) * 1970-01-08 1973-11-08 Glow-Worm Ltd., Belper, Derbyshire (Grossbritannien) Water heater and process for its manufacture
BE816160A (en) * 1974-06-11 1974-09-30 PERFECTIONED BOILER.
DE7515483U (en) * 1974-05-17 1976-01-15 The Lummus Co., Bloomfield, N.J. (V.St.A.) HEATING DEVICE WITH COMBUSTION CHAMBER
US4056143A (en) * 1972-11-08 1977-11-01 The Plessey Company Limited Heat exchange apparatus

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US1406478A (en) * 1919-11-13 1922-02-14 Archer Philip Crouch Rubber-covered tank for containing inflammable liquids
US1609858A (en) * 1926-04-10 1926-12-07 William J Bohon Range-boiler insulator casing
US1665924A (en) * 1926-11-26 1928-04-10 Hicks John Heater
US2638138A (en) * 1949-01-07 1953-05-12 Goodyear Aircraft Corp Fuel cell supporting enclosure
US3938475A (en) * 1974-05-17 1976-02-17 The Lummus Company Fired heater with double casing
JPS5468262U (en) * 1977-10-25 1979-05-15

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100344B2 (en) * 1970-01-08 1973-11-08 Glow-Worm Ltd., Belper, Derbyshire (Grossbritannien) Water heater and process for its manufacture
US4056143A (en) * 1972-11-08 1977-11-01 The Plessey Company Limited Heat exchange apparatus
DE7515483U (en) * 1974-05-17 1976-01-15 The Lummus Co., Bloomfield, N.J. (V.St.A.) HEATING DEVICE WITH COMBUSTION CHAMBER
BE816160A (en) * 1974-06-11 1974-09-30 PERFECTIONED BOILER.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534005A1 (en) * 1982-10-05 1984-04-06 Sdecc ARRANGEMENT OF A FORCE DRAIN GAS BOILER
EP0105805A1 (en) * 1982-10-05 1984-04-18 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Air-tight heater assembly with forced draft
GB2144526A (en) * 1983-06-29 1985-03-06 Marston Palmer Ltd Flexible heated containers
FR2577309A1 (en) * 1985-02-13 1986-08-14 Sdecc MODULATING GAS BOILER OF THE CONDENSING SEAL TYPE WITH SILENT OPERATION.
EP0192564A1 (en) * 1985-02-13 1986-08-27 Saunier Duval Eau Chaude Chauffage - Sdecc Silent action gas-fired hermetically closed modulating condensing boiler

Also Published As

Publication number Publication date
US4444155A (en) 1984-04-24
EP0051516B1 (en) 1984-07-11
JPS57131961A (en) 1982-08-16
FR2493483A1 (en) 1982-05-07
FR2493483B3 (en) 1983-07-01
ES8206816A1 (en) 1982-09-01
DE3164756D1 (en) 1984-08-16
ES506521A0 (en) 1982-09-01

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