EP1314947B1 - Echangeur de chaleur, en particulier pour installation de chauffage - Google Patents

Echangeur de chaleur, en particulier pour installation de chauffage Download PDF

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Publication number
EP1314947B1
EP1314947B1 EP20020025786 EP02025786A EP1314947B1 EP 1314947 B1 EP1314947 B1 EP 1314947B1 EP 20020025786 EP20020025786 EP 20020025786 EP 02025786 A EP02025786 A EP 02025786A EP 1314947 B1 EP1314947 B1 EP 1314947B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
corrugation
different
pipe
sections
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
EP20020025786
Other languages
German (de)
English (en)
Other versions
EP1314947A2 (fr
EP1314947A3 (fr
Inventor
Matthias Gehring
Bernd Dr. Michelfelder
Bernd Seeger
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.)
Witzenmann GmbH
Original Assignee
Witzenmann GmbH
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 Witzenmann GmbH filed Critical Witzenmann GmbH
Publication of EP1314947A2 publication Critical patent/EP1314947A2/fr
Publication of EP1314947A3 publication Critical patent/EP1314947A3/fr
Application granted granted Critical
Publication of EP1314947B1 publication Critical patent/EP1314947B1/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
    • F24H1/22—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
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section

Definitions

  • the invention relates to a heat exchanger for heating systems with the features of the preamble of claim 1.
  • the heating of the water takes place in such a way that heat is transferred from the exhaust gas to the water in the upper area by forced convection and radiation, and in the lower area forced convection and condensation lead to heat transfer.
  • the condensate produced during condensation runs down from the heat exchanger housing.
  • the advantage of a smooth tube coil is due to the improved flow conditions in a better mass transfer and heat transfer.
  • the present invention has the object to provide a heat exchanger of the type mentioned with improved performance characteristics available.
  • the at least two superposed regions consist of a hot zone with heat transfer by forced convection and radiation and a condensation zone with heat transfer by forced convection and condensation, so that the line starting from the upper hot zone in the extends lower condensation region and may be provided in the upper hot zone with a further Schlauchwellung with a longer wavelength and possibly flatter wave flanks than in the lower condensation region.
  • the hose corrugation can almost easily approach a smooth-bore spiral, which leads to the desired favorable flow conditions and thus to the avoidance of local overheating in this region.
  • the wide corrugation avoids the occurrence of secondary vortices in the troughs, the heat transfer would hamper.
  • a wide corrugation increases the diameters of the detached vortices according to the principle of the Kármán vortex street and thus contributes to the improvement of the heat transfer.
  • smaller wavelength and especially steeper wave edges in turn has the desired maximum surface area, which is in a preferred application, about 2.5 times higher than in a comparable smooth tube.
  • the aforementioned vortex or flow conditions are uncritical in the condensation region due to the lower temperatures prevailing there.
  • a step for optimizing the heat exchanger can also already be to provide line sections with different materials which have a different corrosion resistance.
  • the pipe is formed as a helix and laid helically in the heat exchanger housing.
  • the present invention can be used not only in the heat exchangers for heating systems, but also in any other heat exchangers having areas with different ratios such as temperatures, heat radiation, etc.
  • the line according to the invention comprises at least two line sections with different hose and / or Wave geometries, namely preferably a line section with further Schlauchwellung and larger wavelength with flatter particular wave flanks and a section with narrower Schlauchwellung smaller wavelength and steeper wave edges.
  • the wide Schlauchwellung with shallow wave flanks is similar to a smooth-tube coil intended to be installed in heat exchanger areas with high temperatures, since the wide corrugation ensures that no gas bubbles can settle on the inner wall of the pipe, which would affect the heat dissipation.
  • the line section with narrower hose corrugation is suitable for those areas which have the largest possible surface area for optimizing the heat exchanger surface without critical flow or temperature influences occurring in the narrow corrugated areas of the wave troughs or wave crests.
  • the two differently designed line sections can merge seamlessly into one another or else be connected to one another by a transition region, which may also be provided with another geometry under certain circumstances.
  • the present invention can be used in particular for heat exchangers with integrated corrugated hose spiral and thus replaces conventional designs with smooth-tube and fin tube helix
  • the idea essential to the invention is that of line sections with different geometries also apply to conventional tube heat exchangers, which are usually equipped with a bundle of mutually parallel finned tubes.
  • the interior of the heat exchanger housing can be divided into at least two areas with different conditions, namely in a hot area close to the burner and a condensation area remote from the burner. It is also advisable then to provide line sections with further hose corrugation in the hot area and line sections with narrow hose corrugation in the condensation area.
  • the inventive heat exchanger 1 shown in Figure 1 consists of a cylindrical housing 2 with a vertical housing axis.
  • a corrugated hose coil 3 is also arranged with a vertical helical axis, wherein the corrugated hose is laid so that the helical diameter fails as large as possible, so the corrugated hose is laid along the Gescouseinnenwandung.
  • the corrugated tube spiral 3 in this case has a housing bottom 4 arranged in the vertical direction oriented inlet 5 and arranged below the housing cover 6 and extending in the horizontal direction outlet 7. Accordingly, the medium to be heated - in the present case, the water to be heated - flows from bottom to top through the heat exchanger.
  • a burner 8 is arranged in the upper region of the heat exchanger, that is, the medium to be heated flows from the colder lower region of the heat exchanger into the hotter upper region.
  • the burner 8 is designed so that it projects from the housing cover 6 in the vertical direction down into the heat exchanger and the flame directed in particular in the horizontal direction radially outward on the corrugated hose coil 3, so that in this At the height of the burner located so-called hot area A of the heat exchanger, the heat is transferred by forced convection and radiation to the corrugated tube and thus the medium flowing through the corrugated tube.
  • the corrugated tube In the region located below the burner and not acted upon directly by the flames, the so-called condensation region B, the corrugated tube is acted upon by the hot air or the hot exhaust gas leaving the heat exchanger at the bottom through an exhaust outlet 9 arranged in the bottom. so that the heat is transferred through forced convection and condensation.
  • an outlet 10 for the condensate is finally provided, which is obtained in the condensation zone B during the condensation at the corrugated hose coil.
  • a cylindrical displacement body 11 is disposed within the corrugated hose coil 3, which blocks the interior space within the coil 3 and thus directs the gas flow over the outer region of the housing and past the corrugated hose coil 3. This ensures the most efficient heat exchange between the heating gas and the heating water to be heated.
  • this displacement body 11 serves to define the corrugated hose coil 3 on the housing wall leaving an annular gap, said annular gap between the housing wall and displacement body is largely filled by the corrugated hose, which abuts with its outer brims, so the wave crests on displacement body and housing wall, while the area between each two wave mountains leaves room for the flow of hot exhaust gas.
  • FIG. 2 shows a short section of the corrugated hose coil in a representation unwound in the plane: the wavy line section 3a assigned to the hot section A can be seen there the narrow waved portion 3b is assigned to the condensation region B.
  • both sections are integrally and seamlessly into each other, ie, the continuous corrugated tube is provided with different corrugations.
  • the present invention provides the advantage of a heat exchanger, which is constructed in a conventional manner, but is optimized by simply replacing the line component such that the line component adapted to the respective conditions in the individual heat exchanger sections and accordingly with a different hose - And / or wave geometry is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Echangeur de chaleur pour installations de chauffage, composé d'un boîtier (2) en particulier cylindrique et d'une conduite (3) posée en hélice dans le boîtier, dans lequel la conduite (3) présente, pour optimiser les propriétés d'utilisation et/ou de transmission de chaleur dans différentes zones (A, B) à l'intérieur du boîtier d'echangeur de chaleur (2), au moins deux sections de conduite (3a, 3b) de formes de construction différentes et adaptées aux conditions régnant dans ces zones respectives, l'échangeur de chaleur (1) présentant au moins deux zones (A, B) avec différentes conditions de transmission de chaleur qui se composent d'une zone chaude (A) avec transmission de chaleur par convection forcée et rayonnement et une zone de condensation (B) avec transmission de chaleur par convection forcée et condensation,
    caractérisé par le fait
    que les deux sections de conduite sont composées de tuyaux ondulés flexibles présentant des géométries de tuyau et/ou d'onde différentes et/ou des matériaux différents.
  2. Echangeur de chaleur selon la revendication 1,
    caractérisé par le fait
    que la conduite (3) présente au moins deux sections de conduite (3a, 3b) avec des géométries d'onde différentes, à savoir une section de conduite (3a) avec une ondulation plus large et une plus grande longueur d'onde et une section de conduite (3b) avec une ondulation plus serrée et une plus petite longueur d'onde.
  3. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que le boîtier d'échangeur de chaleur (2) est prévu en orientation verticale avec axe cylindrique vertical.
  4. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que la conduite (3) en hélice s'étend de la zone chaude supérieure (A) dans la zone de condensation inférieure (B) et que la conduite en hélice est munie dans la zone chaude supérieure d'une autre ondulation avec des flancs d'onde plus plat que dans la zone de condensation inférieure.
  5. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que les au moins deux sections de conduite (3a, 3b) de géométries d'onde différentes sont reliées ensemble en une seule pièce et passent de l'une à l'autre.
  6. Echangeur de chaleur selon au moins la revendication 2,
    caractérisé par le fait
    que les au moins deux sections de conduite (3a, 3b) de géométries d'onde différentes sont associées à des tuyaux ondulés différents et que les au moins deux tuyaux ondulés sont reliés par aboutage pour former la conduite en hélice.
  7. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que la conduite présente au moins deux sections de conduite de géométries de tuyau différentes, comme en particulier de diamètres intérieurs et/ou d'épaisseurs de paroi différents.
  8. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que la conduite présente au moins deux sections de conduite en matériaux différents.
  9. Echangeur de chaleur selon au moins la revendication 1,
    caractérisé par le fait
    que la conduite présente au moins deux sections de conduite de hauteur d'onde différente.
EP20020025786 2001-11-22 2002-11-16 Echangeur de chaleur, en particulier pour installation de chauffage Expired - Lifetime EP1314947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10157267 2001-11-22
DE2001157267 DE10157267A1 (de) 2001-11-22 2001-11-22 Wärmetauscher, insbesondere für Heizungsanlagen

Publications (3)

Publication Number Publication Date
EP1314947A2 EP1314947A2 (fr) 2003-05-28
EP1314947A3 EP1314947A3 (fr) 2004-12-15
EP1314947B1 true EP1314947B1 (fr) 2006-04-26

Family

ID=7706551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020025786 Expired - Lifetime EP1314947B1 (fr) 2001-11-22 2002-11-16 Echangeur de chaleur, en particulier pour installation de chauffage

Country Status (2)

Country Link
EP (1) EP1314947B1 (fr)
DE (2) DE10157267A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU193295U1 (ru) * 2019-06-20 2019-10-22 Ришат Сафуанович Шаймухаметов Котел водогрейный

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208658B4 (de) * 2002-02-28 2005-11-10 Witzenmann Gmbh Wärmetauscher, insbesondere für Schwimmbäder
DE10306699A1 (de) * 2003-02-18 2004-09-02 Robert Bosch Gmbh Wärmetauscher mit einem strömungsoptimierten wärmeaufnehmenden Strömungskanal, insbesondere für ein Heizgerät
RU2413151C2 (ru) * 2005-07-29 2011-02-27 Линде Акциенгезельшафт Змеевиковый теплообменник с выполненными из разных материалов деталями
US10012413B2 (en) 2014-04-15 2018-07-03 Ecr International, Inc. Heat exchanger
ES2894175A1 (es) * 2020-08-07 2022-02-11 Hydronik Soluciones Tecn Sl Interacumulador instantaneo de fluidos para consumo humano y/o fluidos alimenticios

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB684602A (en) * 1948-08-04 1952-12-24 Giovanni Rossi Improvements in tubular heat exchanger elements, particularly for steam boilers
NL8403236A (nl) * 1984-10-24 1986-05-16 Henk Durieux Verwarmingsketel voor een centrale verwarmingsinstallatie.
DE4110264A1 (de) * 1990-06-28 1992-01-02 Witzenmann Metallschlauchfab Waermetauscher, insbesondere kraftstoffkuehler fuer eine verbrennungskraftmaschine
US5131351A (en) * 1991-08-05 1992-07-21 Farina Alfred J Heat exchanger plug
US5782208A (en) * 1994-06-15 1998-07-21 Glowcore Acquisition Company Water boiler with metal core
US5572885A (en) * 1995-06-06 1996-11-12 Erickson; Donald C. Shrouded coiled crested tube diabatic mass exchanger
DE19529559A1 (de) * 1995-08-11 1997-02-13 Wieland Werke Ag Wärmeaustauschsystem zur Wassererwärmung
AT409546B (de) * 1998-12-17 2002-09-25 Vaillant Gmbh Wasserheizgerät
DE20100116U1 (de) * 2001-01-05 2001-03-22 Hde Metallwerk Gmbh Wärmetauscherrohr für flüssige oder gasförmige Medien

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU193295U1 (ru) * 2019-06-20 2019-10-22 Ришат Сафуанович Шаймухаметов Котел водогрейный

Also Published As

Publication number Publication date
DE50206542D1 (de) 2006-06-01
EP1314947A2 (fr) 2003-05-28
DE10157267A1 (de) 2003-06-12
EP1314947A3 (fr) 2004-12-15

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