FR2505993A1 - COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER - Google Patents

COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER Download PDF

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Publication number
FR2505993A1
FR2505993A1 FR8109584A FR8109584A FR2505993A1 FR 2505993 A1 FR2505993 A1 FR 2505993A1 FR 8109584 A FR8109584 A FR 8109584A FR 8109584 A FR8109584 A FR 8109584A FR 2505993 A1 FR2505993 A1 FR 2505993A1
Authority
FR
France
Prior art keywords
cover
water
combustion chamber
small
ring
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
FR8109584A
Other languages
French (fr)
Other versions
FR2505993B3 (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 FR8109584A priority Critical patent/FR2505993A1/en
Priority to DE19823214638 priority patent/DE3214638A1/en
Publication of FR2505993A1 publication Critical patent/FR2505993A1/en
Application granted granted Critical
Publication of FR2505993B3 publication Critical patent/FR2505993B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F28F9/02—Header boxes; End plates
    • 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

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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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A cooling device for the cover of a combustion chamber for a domestic boiler with a cylindrical water-pipe ring which is arranged around a central burner and in which water flows between a lower and an upper distributing ring, is produced by the water circulating in the heat exchanger, which also leads to an increased recovery of the heat carried off through this cover, by the water originating from the upper distributing ring being conducted in such a manner that it also circulates on the external surface of a plate closing off the combustion chamber.

Description

L'invention se rapporte à un dispositif de refroidissement du couvercle d'une chambre de combustion formée par un échangeur à nappe cylindrique de tubes d'eau notamnent pour chaudière à condensation.The invention relates to a device for cooling the cover of a combustion chamber formed by a cylindrical layer exchanger of water tubes, in particular for a condensation boiler.

Les echangeurs de ce type formant la chambre de combustion sont habituellement réalisés sous forme d'une nappe cylindrique de tubes d'eau disposes autour d'un brûleur central et enveloppes d'une coquille etanche destinée à collecter les produits de combustion qui s'évacuent par une cheminée. Cette disposition permet une récupération partielle ou totale de la chaleur latente de condensation de la vapeur contenue dans 7es gaz de combustion à cause des surfaces d'échange importantes prévues entre les tubes et ces gaz.L'eau circule dans les tubes de la nappe en montant dans un faisceau de tubes à partir d'un anneau répartiteur inférieur vers un anneau répartiteur supérieur puis en redescendant dans un autre faisceau de tubes vers le répartiteur inferieur et ainsi de suite, grace à un jeu de chicanes local i- sées dans les anneaux.The exchangers of this type forming the combustion chamber are usually produced in the form of a cylindrical sheet of water tubes arranged around a central burner and envelopes of a sealed shell intended to collect the combustion products which are evacuated by a fireplace. This arrangement allows partial or total recovery of the latent heat of condensation of the vapor contained in the combustion gases due to the large exchange surfaces provided between the tubes and these gases. The water circulates in the tubes of the sheet in ascending in a bundle of tubes from a lower distributor ring to an upper distributor ring then descending in another tube bundle to the lower distributor and so on, thanks to a set of local baffles placed in the rings .

La partie superieure de la chambre de combustion à l'aplomb du brûleur est obturée par un disque formant couvercle de façon à contraindre les produits de combustion à traverser la nappe de tubes dans lesquels circule l'eau à réchauffer. Ce couvercle est porté à une temperature élevée par les produits de combustion ; il a par conséquent tendance à se dilater ce qui peut provoquer une déformation et l'arrachement des points de soudure.The upper part of the combustion chamber above the burner is closed by a disc forming a cover so as to force the combustion products to pass through the sheet of tubes in which the water to be heated circulates. This cover is brought to a high temperature by the products of combustion; it therefore tends to expand which can cause deformation and tearing of the weld points.

Pour éviter ces inconvénients, l'invention a donc pour objet le refroidissement du couvercle de la chambre de combustion en utilisant l'eau qui circule dans l'échangeur de chaleur ce qui permet par surcroit de récupérer la chaleur dissipée par ce couvercle.To avoid these drawbacks, the object of the invention is therefore to cool the cover of the combustion chamber by using the water which circulates in the heat exchanger, which moreover makes it possible to recover the heat dissipated by this cover.

Suivant l'invention, l'eau provenant de l'anneau répartiteur supérieur est amenée à circuler egalement sur la face extérieure du couvercle obturant la chambre de combustion, par le fait que ledit couvercle est coiffé d'un chapeau qui délimite avec lui une petite chambre comnuniquant avec l'anneau répartiteur d'eau supérieur. According to the invention, the water coming from the upper distributing ring is also caused to circulate on the outside face of the cover closing the combustion chamber, by the fact that said cover is capped with a cap which delimits with it a small communicating room with the upper water distributor ring.

Suivant une autre caractéristique particulière de l'invention des nervures de séparation prévues sur le couvercle délimitent des petites chambres en forme de quadrants qui communiquent entre elles par des petits canaux de passage.According to another particular characteristic of the invention, the separation ribs provided on the cover delimit small quadrant-shaped chambers which communicate with each other by small passage channels.

D'autres caractéristiques particulières et avantages de l'invention apparattront a la lecture de la description qui va suivre d'une forme de réalisation en référence aux dessins annexés qui représentent - figure 1 : une vue en perspective éclatée de la partie
supérieure d'un corps de chauffe.Other particular characteristics and advantages of the invention will appear on reading the following description of an embodiment with reference to the accompanying drawings which represent - Figure 1: an exploded perspective view of the part
upper part of a heating body.

- figure 2 : une vue en plan et en coupe suivant la ligne AA de
la figure 1.- Figure 2: a plan view and in section along line AA of
Figure 1.

L'échangeur formant la chambre de combustion est constitué d'une nappe cylindrique de tubes d'eau 10 disposée autour d'un brûleur central 11 et enveloppé d'une coquille étanche non représentee destinée å collecter les produits de combustion qui s'évacuent par une cheminée.The exchanger forming the combustion chamber consists of a cylindrical layer of water tubes 10 disposed around a central burner 11 and wrapped in a sealed shell (not shown) intended to collect the combustion products which are evacuated by a chimney.

Le haut de la chambre de combustion ainsi délimitée est obturée par un disque 1 formant couvercle. Ce couvercle 1 est entouré d'un anneau répartiteur d'eau 2 dans lequel debouche les tubes 10 ; sur sa face extérieure sont prévues des nervures de séparation 3 disposées par exemple en croix.The top of the combustion chamber thus delimited is closed by a disc 1 forming a cover. This cover 1 is surrounded by a water distributor ring 2 into which the tubes 10 open; on its outer face are provided separation ribs 3 arranged for example in a cross.

Le couvercle 1 est coiffé par un chapeau 4 qui s'applique sur la bordure extérieure de l'anneau 2 et sur les nervures 3 dudit couvercle de façon à délimiter avec lui des petites chambres 5 en forme de quadrants communiquant avec l'anneau répartiteur 2.De plus les chambres S-communiquent éventuellement entre elles par des petits canaux de passage 6 prévus sur les nervures de séparation 3.The cover 1 is capped by a cap 4 which is applied to the outer edge of the ring 2 and to the ribs 3 of the said cover so as to define with it small chambers 5 in the form of quadrants communicating with the distributor ring 2 .Moreover, the chambers S possibly communicate with each other by small passage channels 6 provided on the separation ribs 3.

Des bossages 7 de même hauteur que les nervures 3 sont également prévus à l'intérieur des petites chambres 5 pour souder le chapeau 4 et éviter ainsi qu'il se gonfle sous la pression de l'eau.Bosses 7 of the same height as the ribs 3 are also provided inside the small chambers 5 to weld the cap 4 and thus prevent it from swelling under the pressure of the water.

L'eau circule dans les tubes de la nappe à partir d'un anneau répartiteur inférieur non représenté, en montant d'abord dans quelques tubes voisins pour atteindre l'anneau répartiteur superieur 2, puis en redescendant dans quelques autres tubes voisins et ainsi de suite. En debouchant dans l'anneau 2, l'eau pénetre egalement dans les chambres 5 et peut circuler de l'une à l'autre grace aux petits canaux 6 ce qui cree un film continu sur le couvercle 1 de la chambre de combustion.The water circulates in the groundwater tubes from a lower distributor ring, not shown, by first ascending in a few neighboring tubes to reach the upper distributor ring 2, then descending in a few other neighboring tubes and so on. after. By opening into the ring 2, the water also enters the chambers 5 and can circulate from one to the other thanks to the small channels 6 which creates a continuous film on the cover 1 of the combustion chamber.

Cette circulation d'eau provenant directement de'l'échangeur de chaleur permet de refroidir le couvercle chauffé par les produits de combustion et de récupérer les calories ainsi dissipés. This circulation of water coming directly from the heat exchanger makes it possible to cool the cover heated by the products of combustion and to recover the calories thus dissipated.

L'invention ne se limite pas à l'exemple de realisation représenté mais en englobe aussi toutes les variantes constructives. The invention is not limited to the example of embodiment shown but also encompasses all the constructive variants thereof.

Claims (5)

Revendications.Claims. 1. Dispositif de refroidissement du couvercle d'une chambre de1. Cooling device for the cover of a combustion de chaudière domestique à gaz comportant une nappe combustion of a domestic gas boiler with a tablecloth cylindrique de tubes d'eau disposée concentriquement à un cylindrical of water tubes arranged concentrically to a brûleur central, nappe qui assure le passage de l'eau entre central burner, tablecloth which ensures the passage of water between un anneau répartiteur inferieur et un anneau répartiteur a lower distributor ring and a distributor ring supérieur caractérisé par le fait que l'eau provenant de superior characterized by the fact that water from l'anneau répartiteur superieur (2) est amenée å circuler the upper distributor ring (2) is caused to circulate également sur la face extérieure du couvercle (1) obturant la also on the outside of the cover (1) closing off the chambre de combustion. combustion chamber. 2. Dispositif selon la revendication 1 caractérise par le fait2. Device according to claim 1 characterized by the fact que le couvercle (1) est coiffe d'un chapeau (4) qui delimite that the cover (1) is capped with a cap (4) which delimits avec lui une petite chambre communiquant avec l'anneau with him a small room communicating with the ring répartiteur d'eau superieur (2). upper water distributor (2). 3. Dispositif selon la revendication 2 caractérisé par le fait3. Device according to claim 2 characterized in that que des nervures de séparation (3) prévues sur la face exterieu-  that separation ribs (3) provided on the outer face- re du couvercle (1) delimitent des petites chambres (5) en re of the cover (1) delimit small chambers (5) in forme de quadrants. form of quadrants. 4. Dispositif selon la revendication 3 caracterise par le fait4. Device according to claim 3 characterized in that que les petites chambres (5) en forme de quadrants communiquent that the small quadrant-shaped chambers (5) communicate entre elles par des petits canaux de passage (6). between them by small passage channels (6). 5. Dispositif selon la revendication 2 caractérisé par le fait5. Device according to claim 2 characterized in that que des bossages (7) de soudure du chapeau (4) sont prévus that bosses (7) for welding the cap (4) are provided sur la face extérieure du couvercle (1) à l'intérieur des on the outside of the cover (1) inside the petites chambres (5).  small rooms (5).
FR8109584A 1981-05-14 1981-05-14 COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER Granted FR2505993A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8109584A FR2505993A1 (en) 1981-05-14 1981-05-14 COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER
DE19823214638 DE3214638A1 (en) 1981-05-14 1982-04-20 Device for cooling the cover of a combustion chamber for a domestic gas boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8109584A FR2505993A1 (en) 1981-05-14 1981-05-14 COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER

Publications (2)

Publication Number Publication Date
FR2505993A1 true FR2505993A1 (en) 1982-11-19
FR2505993B3 FR2505993B3 (en) 1984-02-10

Family

ID=9258428

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8109584A Granted FR2505993A1 (en) 1981-05-14 1981-05-14 COOLING DEVICE FOR THE COVER OF A CYLINDRICAL COMBUSTION CHAMBER

Country Status (2)

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DE (1) DE3214638A1 (en)
FR (1) FR2505993A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679407A (en) * 2012-06-06 2012-09-19 相国卫 Novel infrared energy accumulating stove

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106568198B (en) * 2016-10-20 2019-10-29 宁波市哈雷换热设备有限公司 A kind of combustion chamber sealing device of heat exchanger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706303A (en) * 1970-02-17 1972-12-19 Raytheon Co Compact heat exchanger with high intensity burner
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102679407A (en) * 2012-06-06 2012-09-19 相国卫 Novel infrared energy accumulating stove

Also Published As

Publication number Publication date
DE3214638A1 (en) 1982-12-02
DE3214638C2 (en) 1992-09-24
FR2505993B3 (en) 1984-02-10

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