EP0051516B1 - 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
EP0051516B1
EP0051516B1 EP81401624A EP81401624A EP0051516B1 EP 0051516 B1 EP0051516 B1 EP 0051516B1 EP 81401624 A EP81401624 A EP 81401624A EP 81401624 A EP81401624 A EP 81401624A EP 0051516 B1 EP0051516 B1 EP 0051516B1
Authority
EP
European Patent Office
Prior art keywords
leakproof
shell
baseplate
tubes
chamber according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81401624A
Other languages
German (de)
French (fr)
Other versions
EP0051516A1 (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
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.)
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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.
  • a boiler is for example known from US Pat. No. 4,056,143.
  • 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 - in 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, emit 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 metal fabrics, and which - by preventing the reflection of sound pressure waves from thermodynamic phenomena linked to high thermal gradients from combustion - prevent the formation and '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 are 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 cold water inlet and the hot water outlet, at the level of the lower distributor, are 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 sheet of tubes 3 and discharges them through an upper orifice 8.
  • the chamber is produced in the following manner.
  • 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 seal 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 the maintenance of sound oscillations, which eliminates noise.
  • the flexible envelope 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 a seal between the flexible shell, the cover and the base.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Fluid Heaters (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Gas Burners (AREA)

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. Une telle chaudière est par exemple connue du brevet US-A- No 4056143.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. Such a boiler is for example known from US Pat. No. 4,056,143.

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.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 - in 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, emit a continuous noise, of high intensity, which cannot be admitted for devices with permanent operation.

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 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 metal fabrics, and which - by preventing the reflection of sound pressure waves from thermodynamic phenomena linked to high thermal gradients from combustion - prevent the formation and 'maintenance of sound oscillations.

Des caractéristiques particulières et des 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.Particular 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 d'où 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 sont déterminés 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, sont assurés 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 du 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 are 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 cold water inlet and the hot water outlet, at the level of the lower distributor, are 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 sheet of tubes 3 and discharges them through an upper orifice 8. The chamber is produced in the following manner. 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 seal 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 the maintenance of sound oscillations, which eliminates noise.

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'accrochage divers appropriés. Cet accrochage prévoit évidemment l'étanchéité entre la coquille souple, le couvercle et le socle.According to a variant embodiment not shown, the flexible envelope 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 a seal between the flexible shell, the cover and the base.

Claims (5)

1. Cylindrical leakproof heat exchanger chamber with tubes of water arranged concentrically to an air-jet burner, which chamber comprises a lower baseplate (9) and an upper cover (13) for holding the tubes (3) as well as a leakproof external shell surrounding the tubes of water and opening into a chimney (8) for collecting and removing the combustion products, characterised in that the external shell consists of a leakproof supple and very light-weight material (12) of the type of a gas-tight rubber-coated fabric or plastic sheet which by preventing the reflection of sound-producing pressure waves resulting from the thermodynamic phenomena connected with the high thermal gradients caused by the combustion, prevent the formation and continuance of sound-producing oscillations.
2. Leakproof chamber according to claim 1, characterised in that the shell is mounted on a cylindrical fitment which serves as a support and which positions the shell in a leakproof manner between an upper cover (13) and a lower baseplate (9).
3. Leakproof chamber according to claims 1 and 2, characterised in that the cylindrical fitment consists of two hoops (10) joined by a plurality of vertical struts (11).
4. Leakproof chamber according to claims 1, 2 and 3, characterised in that the leakproofness between the fitment, the baseplate (9) and the cover (13) is proved by folding the supple material back over the edge of the hoops (10).
5. Leakproof chamber according to claim 1, characterised in that the shell is stretched between the upper cover (13) and the lower baseplate (9), to which cover and baseplate it is directly anchored in a leakproof 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 EP0051516A1 (en) 1982-05-12
EP0051516B1 true EP0051516B1 (en) 1984-07-11

Family

ID=9247521

Family Applications (1)

Application Number Title Priority Date Filing Date
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) ES8206816A1 (en)
FR (1) FR2493483A1 (en)

Families Citing this family (7)

* 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
GB8317605D0 (en) * 1983-06-29 1983-08-03 Imi Marston Ltd Container
FR2577309B1 (en) * 1985-02-13 1987-04-17 Sdecc MODULATING GAS BOILER OF THE WATERPROOF TYPE CONDENSING, WITH QUIET OPERATION.
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB1284642A (en) * 1970-01-08 1972-08-09 Glow Worm Ltd Improvements relating to heat exchangers and water-heating apparatus incorporating such heat exchangers
US4056143A (en) * 1972-11-08 1977-11-01 The Plessey Company Limited Heat exchange apparatus
DE2521524A1 (en) * 1974-05-17 1975-11-27 Lummus Co HEATING DEVICE
US3938475A (en) * 1974-05-17 1976-02-17 The Lummus Company Fired heater with double casing
BE816160A (en) * 1974-06-11 1974-09-30 PERFECTIONED BOILER.
JPS5468262U (en) * 1977-10-25 1979-05-15

Also Published As

Publication number Publication date
FR2493483B3 (en) 1983-07-01
ES506521A0 (en) 1982-09-01
FR2493483A1 (en) 1982-05-07
ES8206816A1 (en) 1982-09-01
EP0051516A1 (en) 1982-05-12
JPS57131961A (en) 1982-08-16
US4444155A (en) 1984-04-24
DE3164756D1 (en) 1984-08-16

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