WO1992020976A1 - Procede de fabrication d'un corps de chauffe a double paroi - Google Patents

Procede de fabrication d'un corps de chauffe a double paroi Download PDF

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Publication number
WO1992020976A1
WO1992020976A1 PCT/DE1992/000405 DE9200405W WO9220976A1 WO 1992020976 A1 WO1992020976 A1 WO 1992020976A1 DE 9200405 W DE9200405 W DE 9200405W WO 9220976 A1 WO9220976 A1 WO 9220976A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating shaft
jacket
double
areas
heating
Prior art date
Application number
PCT/DE1992/000405
Other languages
German (de)
English (en)
Inventor
Klaus Geil
Dirk Haibach
Peter Menne
Wilfried Niether
Rainer Schild
Johann Wienen
Wilhem Wingensiefen
Original Assignee
Joh. Vaillant Gmbh U. Co.
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 Joh. Vaillant Gmbh U. Co. filed Critical Joh. Vaillant Gmbh U. Co.
Priority to EP92909733A priority Critical patent/EP0544849B1/fr
Priority to AT92909733T priority patent/ATE121831T1/de
Priority to DE59202027T priority patent/DE59202027D1/de
Publication of WO1992020976A1 publication Critical patent/WO1992020976A1/fr

Links

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 method for producing a double-walled heating shaft of a burner-heated hot water device, in which the inner and outer shells are tightly connected to one another in edge areas and which has connecting pipes for the supply and discharge of one of the Heating shaft flowing through the heating medium is provided in accordance with the preambles of the secondary claims 1, 8 and 10.
  • the jackets are first deformed in order to create a certain clear space between the jackets.
  • the jackets are then tightly connected to one another in the edge zones.
  • the outer and inner shells are welded together.
  • the connecting pipes are also connected to the outer jacket by welds.
  • a disadvantage of this, in addition to a relatively complex manufacture, is that when choosing the material for the jackets and the connecting pipes, their weldability must be taken into account. Difficulties also arise from the fact that the transition arches must be separated from the areas in which the inner jacket is spaced from the outer jacket by areas in which the outer and inner jackets are sealed against one another.
  • the aim of the invention is to propose a method which enables simple manufacture of a heating shaft.
  • sufficient sealing of the transition arches against the areas delimiting an essentially continuous cavity is to be ensured.
  • FIG. 1 schematically shows a section of a heating shaft during an intermediate stage of the process
  • FIGS. 2 and 3 details of the connection of the two jackets of the heating shaft according to FIG. 1,
  • FIG. 4 shows a detail of the connection of the two jackets of the heating shaft according to a further embodiment
  • FIG. 5 shows schematically the connection of a connecting pipe to the heating shaft
  • FIG. 6 schematically shows a variant of connecting a connecting pipe to the heating shaft
  • FIG. 7 shows a plan view of a heating shaft
  • FIG. 8 shows a detail in section of the heating shaft according to FIG. 7,
  • FIG. 9 shows an axonometric representation of a corner region of the heating shaft
  • FIGS. 10 to 12 different stages of the assembly of parts to form a heating shaft
  • FIG. 13 schematically shows the deformation of the parts by means of two stamps
  • FIG. 14 shows a side view of a heating shaft
  • FIG. 15 shows a section along the line II-II in FIG. 14,
  • FIG. 16 schematically shows a section through part of a heating shaft before expansion
  • FIG. 17 shows a section according to FIG. 16 after expansion
  • Figure 18 shows a reinforcement part in an axonometric representation
  • FIG. 1 which shows a section of a heating shaft 1, it has two jackets, an inner jacket 2 and an outer jacket 3. These two jackets 2 and 3 are connected to one another in their edge regions by overlapping bent edge sections 4.
  • 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 protrusions 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.
  • FIG. 5 shows the connection of a connecting pipe 12 to the outer jacket 3. This is provided with tubular extensions 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 lamella 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 stubs 24, in which the pipes 21 are inserted tightly.
  • a region 25 extends in the entire circumference of the heating shaft 1, in which the inner jacket 2 is distanced from the outer jacket 3, resulting 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 shell 2 to the outer shell 3.
  • the inner jacket 2 and the outer jacket 3 are plugged together, these being formed by pressed parts, and provided with the bulges 22, the pipe socket 24 and the pipes 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 region 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 areas 28, 281 come together in their edges adjoining the narrow sides of the heating shaft 1 and in the curved area 28, 281 for tight contact 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 flows in and out can.
  • 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 space remaining between the two walls 2 and 3 is pressurized with a pressure above the specified test pressure after the connection of the edge regions and the point-by-point connections have been made via the connecting pieces 38, 39. 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 which are distributed over the entire circumferential surface of the heating shaft 1, largely prevent the two jackets 2, 3 from bulging, 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.
  • FIG. 18 shows an 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 is curved, its curvature corresponding to the desired curvature of the outer jacket 3.
  • FIGS. 20 to 22 show cross sections of reinforcing parts 43, FIG. 20 showing a meandering cross section, FIG. 21 a zigzag cross section and FIG. 22 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)
  • Details Of Fluid Heaters (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

Procédé de fabrication d'un corps de chauffe (1) à double paroi d'un appareil de production d'eau chaude chauffé par brûleur, corps de chauffe dont les enveloppes intérieure et extérieure (2 et 3) sont reliées étroitement entre elles à leurs périphéries et qui est équipé de tubes de raccordement pour l'entrée et la sortie d'un fluide de chauffage traversant ce corps de chauffe (1). Pour simplifier la fabrication de ce type de corps de chauffe, il est prévu qu'on mettra en ÷uvre uniquement des procédés de formage et que les enveloppes intérieure et extérieure (2, 3) seront pourvues, par entaillage, de sections périphériques qui seront juxtaposées au niveau de leurs zones périphériques, avec insertion d'un joint d'étanchéité, de préférence un joint torique (10), et qui seront ensuite reliées entre elles par un pliage croisé.
PCT/DE1992/000405 1991-05-21 1992-05-15 Procede de fabrication d'un corps de chauffe a double paroi WO1992020976A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92909733A EP0544849B1 (fr) 1991-05-21 1992-05-15 Corps de chauffe à double paroi d'un appareil d'eau chaud
AT92909733T ATE121831T1 (de) 1991-05-21 1992-05-15 Doppelwandiger heizschacht eines warmwassergerätes.
DE59202027T DE59202027D1 (de) 1991-05-21 1992-05-15 Doppelwandiger Heizschacht eines Warmwassergerätes.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT102491A AT396441B (de) 1991-05-21 1991-05-21 Verfahren zur herstellung eines doppelwandigen schachtes
AT1024/91 1991-05-21
AT1114/91 1991-06-03
AT111491A AT399947B (de) 1991-06-03 1991-06-03 Brennkammerschacht für einen wassererhitzer
AT944/92 1992-05-11
AT94492A AT398715B (de) 1992-05-11 1992-05-11 Verfahren zum fügen eines heizschachtes

Publications (1)

Publication Number Publication Date
WO1992020976A1 true WO1992020976A1 (fr) 1992-11-26

Family

ID=27146908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1992/000405 WO1992020976A1 (fr) 1991-05-21 1992-05-15 Procede de fabrication d'un corps de chauffe a double paroi

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816776A3 (fr) * 1996-07-01 1998-12-30 Robert Bosch Gmbh Chauffe-eau à gaz et chambre de combustion refroidie par eau
EP0816777A3 (fr) * 1996-07-01 1999-01-07 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

Citations (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

Patent Citations (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816776A3 (fr) * 1996-07-01 1998-12-30 Robert Bosch Gmbh Chauffe-eau à gaz et chambre de combustion refroidie par eau
EP0816777A3 (fr) * 1996-07-01 1999-01-07 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

Also Published As

Publication number Publication date
DE59202027D1 (de) 1995-06-01
ATE121831T1 (de) 1995-05-15
EP0544849A1 (fr) 1993-06-09
EP0544849B1 (fr) 1995-04-26
DE4216474A1 (de) 1992-11-26

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