EP0775876A1 - Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke - Google Patents

Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke Download PDF

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Publication number
EP0775876A1
EP0775876A1 EP96402475A EP96402475A EP0775876A1 EP 0775876 A1 EP0775876 A1 EP 0775876A1 EP 96402475 A EP96402475 A EP 96402475A EP 96402475 A EP96402475 A EP 96402475A EP 0775876 A1 EP0775876 A1 EP 0775876A1
Authority
EP
European Patent Office
Prior art keywords
elements
heating
cross
brazing
fins
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
EP96402475A
Other languages
English (en)
French (fr)
Other versions
EP0775876B1 (de
Inventor
Françoise Vuillaume
Claude Gabrieli
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.)
ELM Leblanc SAS
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ELM Leblanc SAS
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Application filed by ELM Leblanc SAS filed Critical ELM Leblanc SAS
Publication of EP0775876A1 publication Critical patent/EP0775876A1/de
Application granted granted Critical
Publication of EP0775876B1 publication Critical patent/EP0775876B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/526—Pipes in pipe heat exchangers for sanitary water
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular

Definitions

  • the present invention relates to improvements made to boiler heating bodies, in particular gas central heating.
  • These boilers for domestic or industrial use must provide the user with both domestic hot water, the temperature of which must not exceed 65 ° C, and hot heating water which is circulated in a closed circuit within the central heating network of the house.
  • heating bodies are commonly called mixed heating bodies because they have two separate water circuits, one for domestic water, the other for heating water, which are made integral so that 'there is an intimate thermal contact between them.
  • these are tubular circuits arranged one inside the other, and comprising either means for making the thermal bridges between the two circuits, or separate tubular circuits but flattened and joined one against each other.
  • These heating bodies also have a bundle of fins responsible for transmitting to the tubular circuits, the heat flux conveyed by the fumes resulting from combustion within a burner placed in the lower part of the heating body.
  • EP-A-0 401 543 describes a heat exchanger, in particular for water heaters with liquid or gaseous fuel, comprising at least one external tube transporting a heat transfer fluid and containing at least one internal tube of smaller diameter transporting a second heat transfer fluid in heat exchange with the first, as well as means for ensuring a playless support of the inner tube against the outer tube.
  • a main constraint which acts on this type of exchanger lies mainly in the fact that the various water circuits circulate alternately. Each of the circulating circuits must be able to evacuate all the calories present in the fumes, without the other stagnant circuit rising excessively in temperature or pressure.
  • the present invention therefore aims to overcome these drawbacks by proposing a heating body which has both a domestic water heating circuit and a central heating water circuit, these circuits being nested one in the other but having an optimization in terms of flows and heat exchanges at within the exchanger.
  • the invention provides a mixed heating body, comprising a domestic heating circuit and a central heating circuit, the latter being arranged one inside the other, characterized in that it comprises a plurality of first elements for the central heating circuit, connected at their ends to feeders and within which meanders a plurality of second elements with complex cross-section, intended for the domestic heating circuit, these second elements also opening into said feeders, mounting the second element in the first element further delimiting a plurality of generators of contact between said second elements and said first elements in order to produce thermal bridges at these generators, the heating water circulating in the sections delimited between the outer walls of the tube forming the second elements and the inner wall of the first elements elements.
  • the mixed heating body 1 comprises a plurality of first elements 2 produced in the form of a tube of circular or oval cross section, within which are incorporated a plurality of second elements 3 in the form of a tube of complex cross section, such as in particular in cross, in X, in Y.
  • the first element 2 constitutes the heating circuit, the heating water circulates in the sections delimited between the external walls 4 of the tube of complex straight section and the internal wall 5 of the first element 2.
  • the second element 3 constitutes the sanitary heating circuit, the sanitary water travels inside the complex cross section.
  • the mounting of the second element 3 in the first element 2 delimits a plurality of contact generators 6 between the tube of complex cross section 3 and the external tube 2; these contact generators 6 are made integral at the level of the first 2 and second elements 3 by means of known means such as in particular by a soldering or welding operation, in order to produce thermal bridges at the level of these generators.
  • the complex profile of the second element 3 guarantees that it has a sufficient exchange surface to allow all of the thermal power delivered by the burner 7, positioned in its lower part.
  • the particular arrangement between the first 2 and second 3 elements ensures that, during operation in central heating, the wall temperature of the peripheral channels 8 - these being delimited by the first element and the connection zones of the second element - reaches a homogeneous temperature at their wet section very close to that of the first element, which makes it possible to reach, thanks to the high exchange coefficient and the large developed surface, the level of efficiency on the heating side required by the standards.
  • first 2 and second 3 elements the hydraulic diameter of which is optimized so as to reduce the size of the heating body 1, generate the major part of the hydraulic head losses and, in order to minimize the installed power of the circulator, the first elements 2 of the central heating circuit are connected to manifolds 9, 10 arranged on either side of the exchanger.
  • the circulation of the central heating water takes place in parallel within these manifolds, so as to guarantee an identical flow rate in each of the channels 8.
  • these half-shells 11, 12 are produced directly by stamping a metal sheet, it being understood that there are two different dies respectively depending on the obtaining of an upper half-shell and of a lower half-shell.
  • the various elements are produced separately, in particular by stamping, and are made integral by a second operation consisting of example in a welding or brazing phase.
  • These second elements 3 are obtained from cylindrical tubes delivered in a crown, by a cycle of either cross profiling then bending of the latter so as to conform a succession of pins forming a coil, or bending a cylindrical tube followed by a hydroforming step.
  • the exchangers are ready to supply the assembly line of the boilers without resorting to subsequent steps for the assembly of fittings, various elbows, manifolds ...
  • the so-called “strong” brazing step is replaced by a so-called “soft” brazing step, essentially consisting of a tinning phase by soaking.
  • the entire heating body 1 is soaked in a tin bath so as to have, on the one hand a tin film which protects the exchanger against corrosion and on the other hand, keeping the building material from the together, like copper, its work hardened, to avoid to the fins 16 to deform easily during handling.
  • these instead of being in the form of separate fins, are in the form of an accordion.
  • the heating body as described above allows perfect heat exchange between the fluids contained in the two circuits, via a large exchange surface between the conduits, obtained thanks to their relative arrangement.

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)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Finger-Pressure Massage (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP96402475A 1995-11-21 1996-11-18 Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke Expired - Lifetime EP0775876B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9513805A FR2741426B1 (fr) 1995-11-21 1995-11-21 Corps de chauffe mixte a serpentin a section droite complexe
FR9513805 1995-11-21

Publications (2)

Publication Number Publication Date
EP0775876A1 true EP0775876A1 (de) 1997-05-28
EP0775876B1 EP0775876B1 (de) 2001-07-18

Family

ID=9484775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96402475A Expired - Lifetime EP0775876B1 (de) 1995-11-21 1996-11-18 Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke

Country Status (6)

Country Link
EP (1) EP0775876B1 (de)
AT (1) ATE203317T1 (de)
DE (1) DE69613944T2 (de)
ES (1) ES2159001T3 (de)
FR (1) FR2741426B1 (de)
PT (1) PT775876E (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932009A2 (de) * 1998-01-22 1999-07-28 Robert Bosch Gmbh Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte
WO2002050478A1 (en) * 2000-12-20 2002-06-27 Merloni Termosanitari S.P.A. Bi-thermal heat exchanger in particular for condensing boilers
EP1235039A2 (de) * 2001-02-23 2002-08-28 Metech S.r.l. Wärmetauscher mit Spiral aus einem rohrförmigen Element mit tropfenförmigem Durchschnitt
EP2151651A1 (de) * 2008-08-07 2010-02-10 Giannoni S.p.a. Bithermaler Wärmetauscher und seine Herstellung
CN103438737A (zh) * 2013-09-08 2013-12-11 张伟 壳体储水暖气管分流导热换热器及其制作工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL70118Y1 (pl) * 2013-12-12 2018-07-31 Tomton S R O Urządzenie do ogrzewania i chłodzenia, przede wszystkim do ciepłowodnych instalacji centralnego ogrzewania

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR786832A (fr) * 1934-05-29 1935-09-10 Perfectionnements apportés aux échangeurs de température
DE2711212A1 (de) * 1976-03-19 1977-09-29 Nihon Radiator Co Oelkuehler und verfahren zu dessen herstellung
DE3320265A1 (de) * 1983-06-04 1984-12-06 Heinrich Dr.-Ing. 4290 Bocholt Hampel Doppelrohrwaermetauscher
EP0401543A1 (de) 1989-06-08 1990-12-12 Robert Bosch Gmbh Wärmeübertrager, insbesondere für einen gas- oder ölbeheizten Wassererhitzer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR786832A (fr) * 1934-05-29 1935-09-10 Perfectionnements apportés aux échangeurs de température
DE2711212A1 (de) * 1976-03-19 1977-09-29 Nihon Radiator Co Oelkuehler und verfahren zu dessen herstellung
DE3320265A1 (de) * 1983-06-04 1984-12-06 Heinrich Dr.-Ing. 4290 Bocholt Hampel Doppelrohrwaermetauscher
EP0401543A1 (de) 1989-06-08 1990-12-12 Robert Bosch Gmbh Wärmeübertrager, insbesondere für einen gas- oder ölbeheizten Wassererhitzer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0932009A2 (de) * 1998-01-22 1999-07-28 Robert Bosch Gmbh Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte
EP0932009A3 (de) * 1998-01-22 2000-07-05 Robert Bosch Gmbh Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte
WO2002050478A1 (en) * 2000-12-20 2002-06-27 Merloni Termosanitari S.P.A. Bi-thermal heat exchanger in particular for condensing boilers
EP1235039A2 (de) * 2001-02-23 2002-08-28 Metech S.r.l. Wärmetauscher mit Spiral aus einem rohrförmigen Element mit tropfenförmigem Durchschnitt
EP1235039A3 (de) * 2001-02-23 2004-03-03 Metech S.r.l. Wärmetauscher mit Spiral aus einem rohrförmigen Element mit tropfenförmigem Durchschnitt
EP2151651A1 (de) * 2008-08-07 2010-02-10 Giannoni S.p.a. Bithermaler Wärmetauscher und seine Herstellung
CN103438737A (zh) * 2013-09-08 2013-12-11 张伟 壳体储水暖气管分流导热换热器及其制作工艺
CN103438737B (zh) * 2013-09-08 2015-04-08 张伟 壳体储水暖气管分流导热换热器

Also Published As

Publication number Publication date
DE69613944T2 (de) 2002-01-10
FR2741426B1 (fr) 1998-01-23
EP0775876B1 (de) 2001-07-18
ATE203317T1 (de) 2001-08-15
FR2741426A1 (fr) 1997-05-23
DE69613944D1 (de) 2001-08-23
PT775876E (pt) 2001-11-30
ES2159001T3 (es) 2001-09-16

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