EP0544849B1 - Corps de chauffe à double paroi d'un appareil d'eau chaud - Google Patents

Corps de chauffe à double paroi d'un appareil d'eau chaud Download PDF

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Publication number
EP0544849B1
EP0544849B1 EP92909733A EP92909733A EP0544849B1 EP 0544849 B1 EP0544849 B1 EP 0544849B1 EP 92909733 A EP92909733 A EP 92909733A EP 92909733 A EP92909733 A EP 92909733A EP 0544849 B1 EP0544849 B1 EP 0544849B1
Authority
EP
European Patent Office
Prior art keywords
heating shaft
heating
shaft according
outer shell
shell
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 - Lifetime
Application number
EP92909733A
Other languages
German (de)
English (en)
Other versions
EP0544849A1 (fr
Inventor
Klaus Geil
Dirk Haibach
Peter Menne
Wilfried Niether
Rainer Schild
Johann Wienen
Wilhem Wingensiefen
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.)
Nv Vaillant Sa
VAILLANT B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant BV
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
Priority claimed from AT102491A external-priority patent/AT396441B/de
Priority claimed from AT111491A external-priority patent/AT399947B/de
Priority claimed from AT94492A external-priority patent/AT398715B/de
Application filed by Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant BV filed Critical Vaillant Austria GmbH
Publication of EP0544849A1 publication Critical patent/EP0544849A1/fr
Application granted granted Critical
Publication of EP0544849B1 publication Critical patent/EP0544849B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • 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
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/146—Connecting elements of a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other

Definitions

  • the invention relates to a double-walled heating shaft according to the preamble of the independent claims 1 and 6.
  • a water heater which has water chambers arranged on two opposite sides, which are connected via heat exchange tubes which are heated by a burner.
  • the jackets form a certain clear space between them by deformation and are tightly connected to one another in the peripheral zones.
  • the outer and inner shells are welded together.
  • the connecting pipes are also connected to the outer jacket by welds.
  • the aim of the invention is to propose a heating shaft that enables simple manufacture.
  • a sufficient sealing of the transition arches against the areas delimiting an essentially continuous cavity must be ensured.
  • the heating shaft simply by deforming metal sheets.
  • the material can be selected solely on the basis of corrosion resistance and good ductility.
  • the widening of the interior of the heating shaft is anticipated during production by applying the space between the two jackets of the heating shaft with a correspondingly high pressure, and it is subjected to a subsequent exposure to the provided test pressure can not lead to further deformation of the heating shaft.
  • FIG. 1 which shows a section of a heating shaft 1, this has two jackets, an inner jacket 2 and an outer jacket 3. These two coats 2 and 3 are overlapping in their edge areas bent edge sections 4 connected together.
  • the edge sections 4 of the two shells 2 and 3 are provided with tooth-like projections 5, 6 and 51, 61, respectively (FIGS. 2 and 3).
  • every second projection 6, 51 is bent by approximately 90 ° and passes through an opening 7 in the projections 5, 61 running parallel to the plane of the jacket 2, 3.
  • the projections 5, 61 protruding sections bent, resulting in a firm connection of the two shells 2 and 3.
  • a bead 9 is arranged in the area of the angled projections 51 of the inner jacket 2 and serves to receive a circumferential round cord seal 10.
  • Figure 4 shows a variant of the connection of the two jackets 2 and 3, in which the two jackets 2, 3 have smooth edges which are connected to one another by a fold seam 11.
  • Figure 5 shows the connection of a connecting tube 12 to the outer jacket 3. This is provided with tubular lugs 13, the free ends of which are provided with inwardly directed flanges 14.
  • the connecting pipes 12 have a diameter which is below the inner diameter of the flanges 14 and penetrate them.
  • the connecting pipes 12 are provided with an upset collar 15 which is provided for contact with the outside of the flanges 14.
  • the end of the connecting tube 12 inserted into the tubular extension 13 of the outer jacket 3 is deformed into an outwardly directed flange 16, a circumferential seal 17 in the form of an O-ring being inserted between the flanges 16 and 14.
  • FIG. 6 differs from that according to FIG. 5 in that a ring 18 with flat end faces is inserted between the flange 16 of the connecting pipe 12 and the seal 17.
  • FIG. 7 shows a heating shaft 1 in plan view, which encloses a rectangular interior 21.
  • the heating shaft 1 has a double jacket 19, consisting of an inner jacket 2 and an outer jacket 3, in the narrow sides of which 20 tubes 21 of a finned heat exchanger are inserted. These tubes 21 are connected to one another via transition arches formed by bulges 22.
  • the bulges 22 are enclosed by areas 23 in which the outer jacket 3 lies tightly against the inner jacket 2.
  • the inner jacket 2 of the heating shaft 1 is provided with molded pipe sockets 24, in which the pipes 21 are inserted tightly.
  • a region 25 extends in the inner casing 2 from the outer casing 3 over the entire circumference of the heating shaft 1 is, which results in a space 26 through which a medium to be heated can flow.
  • 3 beads 27 are incorporated into the outer jacket, in the area of which the inner jacket 2 and the outer jacket 3 are connected to one another by spot welding or soldering.
  • FIGS. 10 to 12 show the joining and connecting of the inner jacket 2 to the outer jacket 3.
  • the inner jacket 2 and the outer jacket 3 are plugged together, which are formed by pressed parts, and are provided with the bulges 22, the pipe socket 24 and the tubes 21.
  • the plugging together results in substantially congruently curved regions 28 and 281 in the edge region, to which obliquely extending almost straight sections 29 and 291 are connected.
  • This is followed by a further curved area 30 and 301, the two curvatures running in an S-like manner and these not corresponding to the final shape of the heating shaft 1 and having a gap.
  • the angle of the inclined section 29, 291 is reduced in a second step, as a result of which the curved regions 28, 281 in their edges adjoining the narrow sides of the heating shaft 1 and in the curved region 28, 281 for tight contact come together and the gap almost disappears.
  • absolute tightness can be achieved by welding.
  • the concave part 37, 371 of the double curvature is converted into a convex, which represents the final state.
  • a single rounding 36 is obtained from the curvatures 28, 30 and 37 as well as 281, 301 and 371.
  • this deformation is carried out by means of two punches 31 and 37.
  • the punch 31 supports the curved region 281 of the inner casing 2 and is moved towards the longitudinal side 34 in accordance with the arrow 33.
  • the punch 32 is moved in accordance with the arrow 35.
  • a rounding 36 is formed, in which the inner jacket 2 lies tightly against the outer jacket 3.
  • the heating shaft 1 has two jackets 2 and 3 spaced apart from one another, the outer jacket 3 being penetrated by two connecting pieces 38 and 39, via which a medium to be heated can flow in and out.
  • the two shells 2 and 3 are connected to one another at different points 40, for example by means of welding points, in addition to their edge regions in which they are tightly connected to one another.
  • the heating shaft 1 is produced in such a way that the two jackets 2 and 3, apart from their angled edge regions 41, 42, are essentially flat.
  • the edge regions 41, 42 are tightly connected to one another, for example welded.
  • the intermediate space remaining between the two walls 2 and 3 is pressurized after the connection of the edge regions has been established and the point-by-point connections have been made via the connecting pieces 38, 39 with a pressure above the specified test pressure. This leads to a widening of the space between the two shells 2 and 3 due to a plastic deformation of the two shells 2, 3.
  • connection points 40 arranged distributed over the entire lateral surface of the heating shaft 1, so that the heating shaft 1 is essentially prismatic in shape.
  • the walls 2, 3, however, have various deformations which are caused by the connection points 40, as shown in FIG. 15.
  • reinforcement parts 43 are arranged in the corner regions of the heating shaft.
  • FIG. 18 shows an exemplary embodiment of such a reinforcement part 43 which, as can also be seen from FIG. 19, has an essentially comb-like cross section.
  • the web 45 connecting the legs 44 curved, the curvature of which corresponds to the desired curvature of the outer casing 3.
  • FIGS. 20 to 22 show cross sections of reinforcing parts 43, FIG. 20 showing a meandering cross section, FIG. 21 showing a zigzag cross section and FIG. 22 showing a serpentine cross section. In all of these cross sections there is a certain minimum distance between the shells 2, 3.
  • a shaped tube with a rectangular cross section is provided, which is bent accordingly in order to follow the desired curvature of the outer jacket 3.

Landscapes

  • 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)
  • Heat Treatment Of Articles (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Details Of Fluid Heaters (AREA)

Claims (14)

  1. Chambre de chauffe à double paroi d'un chauffe-eau chauffé par un brûleur, et dont la paroi intérieure et la paroi extérieure sont assemblées le long de zones marginales de façon étanche et qui est munie de tubulures d'entrée et de sortie pour un fluide circulant dans la chambre de chauffe, caractérisée par le fait que, entre les zones marginales, il est prévu un joint d'étanchéité, de préférence un joint torique (10), que les zones marginales présentent des ouvertures (7) où pénètrent des bouts (6, 51) de languettes de l'autre paroi (2, 3), les bouts (6, 51) étant repliés, et que la paroi extérieure (3) de la chambre de chauffe (1) est munie de tubulures (13) où se montent les tuyaux de raccordement (12) et dont les bouts libres sont munis de rebords (14) orientés vers l'axe de la tubulure (13), les tuyaux (12) ayant un diamètre inférieur à la section délimitée par le rebord (14) correspondant, qu'ils traversent, et portant un collet s'appuyant contre la face extérieure des rebords (14), et étant munis, à leurs bouts introduits dans les tubulures (13), d'une bride (16) entre laquelle et le rebord (14) des tubulures (13) de la paroi extérieure (3) est interposé un joint infini (17).
  2. Chambre de chauffe suivant la revendication 1, caractérisée par le fait que les deux parois (2, 3) sont assemblées le long des zones marginales par une avissure (11).
  3. Chambre de chauffe suivant l'une des revendications précédentes, caractérisée par le fait qu'au moins l'une des deux parois (2, 3) est munie dans sa zone marginale d'une moulure (9) où est posé le joint d'étanchéité.
  4. Chambre de chauffe suivant l'une des revendications précédentes, caractérisée par le fait qu'il est prévu, entre la bride (16) du tuyau de raccordement (12) et le joint (17), de préférence un joint torique, une bague (18) dont les faces sont essentiellement planes.
  5. Chambre de chauffe suivant l'une des revendications précédentes, caractérisée par le fait que le tuyau de raccordement (12) est muni d'un collet (15) réalisé par refoulement.
  6. Chambre de chauffe à double paroi d'un chauffe-eau chauffé par un brûleur, et dont la paroi intérieure et la paroi extérieure sont assemblées le long de zones marginales de façon étanche et qui est munie de tubulures d'entrée et de sortie pour un fluide circulant dans la chambre de chauffe, caractérisée par le fait que la chambre de chauffe (1) comprend une paroi intérieure (2) et une paroi extérieure (3) formées par des pièces embouties qui comprennent des zones (23) où les parois intérieure (2) et extérieure (3) sont en contact étroit entre elles, tandis que, dans les autres parties (25), les parois intérieure (2) et extérieure (3) sont distantes l'une de l'autre, les parois intérieure (2) et extérieure (3) comprenant des bandes inclinées (29, 291) qui se prolongent par des parties courbes (28, 281) qui sont appliquées l'une sur l'autre de sorte que le rayon de la partie courbe (28) de la paroi extérieure (3) dépasse de l'épaisseur de la paroi le rayon de la partie courbe (281) de la paroi intérieure (2), aucune fente n'existant entre les parois extérieure (3) et intérieure (2) le long de la courbure.
  7. Chambre de chauffe suivant la revendication 6, caractérisée par le fait que l'espace entre les parois (2, 3) assemblées est élargi par l'application d'une pression supérieure à la pression d'essai prescrite.
  8. Chambre de chauffe suivant la revendication 6, caractérisée par le fait que les deux parois (2, 3) sont assemblées outre le long des zones continues étanches, en plusieurs points isolés.
  9. Chambre de chauffe suivant la revendication 6, caractérisée par le fait que dans ses coins sont prévues des pièces de renforcement (43) dont la section détermine une distance libre minimale entre la paroi intérieure (2) et la paroi extérieure (3).
  10. Chambre de chauffe suivant la revendication 9, caractérisée par le fait que les pièces de renforcement (43) ont un profil en forme de peigne, le dos (45) qui relie entre elles les nervures (44) étant éventuellement courbé suivant la courbure du coin.
  11. Chambre de chauffe suivant la revendication 9, caractérisée par le fait que les pièces de renforcement (43) ont un profil en forme de méandre.
  12. Chambre de chauffe suivant la revendication 9, caractérisée par le fait que les pièces de renforcement (43) ont un profil en zig-zag.
  13. Chambre de chauffe suivant la revendication 9, caractérisée par le fait que les pièces de renforcement (43) ont un profil ondulé.
  14. Chambre de chauffe suivant la revendication 9, caractérisée par le fait que les pièces de renforcement (43) ont une section tubulaire rectangulaire.
EP92909733A 1991-05-21 1992-05-15 Corps de chauffe à double paroi d'un appareil d'eau chaud Expired - Lifetime EP0544849B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
AT1024/91 1991-05-21
AT102491A AT396441B (de) 1991-05-21 1991-05-21 Verfahren zur herstellung eines doppelwandigen schachtes
AT111491A AT399947B (de) 1991-06-03 1991-06-03 Brennkammerschacht für einen wassererhitzer
AT1114/91 1991-06-03
AT94492A AT398715B (de) 1992-05-11 1992-05-11 Verfahren zum fügen eines heizschachtes
AT944/92 1992-05-11
PCT/DE1992/000405 WO1992020976A1 (fr) 1991-05-21 1992-05-15 Procede de fabrication d'un corps de chauffe a double paroi

Publications (2)

Publication Number Publication Date
EP0544849A1 EP0544849A1 (fr) 1993-06-09
EP0544849B1 true EP0544849B1 (fr) 1995-04-26

Family

ID=27146908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92909733A Expired - Lifetime EP0544849B1 (fr) 1991-05-21 1992-05-15 Corps de chauffe à double paroi d'un appareil d'eau chaud

Country Status (4)

Country Link
EP (1) EP0544849B1 (fr)
AT (1) ATE121831T1 (fr)
DE (2) DE4216474A1 (fr)
WO (1) WO1992020976A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816777B1 (fr) * 1996-07-01 2002-12-18 Robert Bosch Gmbh Procédé de fabrication d'une chambre de combustion, spécialement pour chauffe-eau à gaz, et chambre de combustion fabriquée selon ce procédé
EP0816776B1 (fr) * 1996-07-01 2002-10-09 Robert Bosch Gmbh Chauffe-eau à gaz et chambre de combustion refroidie par eau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE337891C (de) * 1919-04-01 1921-06-09 Hugo Junkers Schutzvorrichtung an Fluessigkeitserhitzern
GB483690A (en) * 1937-08-13 1938-04-25 Andrew Kelso Improvements in or relating to hot water boilers

Also Published As

Publication number Publication date
WO1992020976A1 (fr) 1992-11-26
DE4216474A1 (de) 1992-11-26
EP0544849A1 (fr) 1993-06-09
DE59202027D1 (de) 1995-06-01
ATE121831T1 (de) 1995-05-15

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