EP0814312A2 - Dispositif pour la fabrication de tubes concentriques enroulés et échangeur de chaleur à tubes concentriques enroulés - Google Patents

Dispositif pour la fabrication de tubes concentriques enroulés et échangeur de chaleur à tubes concentriques enroulés Download PDF

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Publication number
EP0814312A2
EP0814312A2 EP97108997A EP97108997A EP0814312A2 EP 0814312 A2 EP0814312 A2 EP 0814312A2 EP 97108997 A EP97108997 A EP 97108997A EP 97108997 A EP97108997 A EP 97108997A EP 0814312 A2 EP0814312 A2 EP 0814312A2
Authority
EP
European Patent Office
Prior art keywords
tube
heat exchanger
exchanger according
turn
radial extension
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
EP97108997A
Other languages
German (de)
English (en)
Other versions
EP0814312B1 (fr
EP0814312A3 (fr
Inventor
Martin Dipl.-Phys. Schmidt
Karl-Heinz Mayr
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.)
Kme Verwaltungs- und Dienstleistungsgesellschaft M
Original Assignee
KME Schmoele 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 KME Schmoele GmbH filed Critical KME Schmoele GmbH
Publication of EP0814312A2 publication Critical patent/EP0814312A2/fr
Publication of EP0814312A3 publication Critical patent/EP0814312A3/fr
Application granted granted Critical
Publication of EP0814312B1 publication Critical patent/EP0814312B1/fr
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
    • F28D7/04—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 spirally coiled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
    • 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
    • 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

Definitions

  • the invention relates on the one hand to a method for producing a coiled coaxial tube for a heat exchanger.
  • the invention is directed to a heat exchanger which has a coiled coaxial tube in a container.
  • a heat exchanger in particular for domestic water preparation, which has a coiled tube, which consists of an inner tube and an outer tube, in a container.
  • the coaxial tube is wound cylindrically, so that all turns have the same radius.
  • one fluid is passed through the inner tube and the other fluid through the gap between the inner tube and the outer tube.
  • the coaxial tube has a total length of 13 m with a heat exchanger output of approximately 24 kW. This means that the radius of the turns of the coaxial tube can be kept relatively small, but this is at the expense of a greater length of the helix and thus ultimately of the container.
  • the invention is based on the object of providing a method for producing a coiled tube for a heat exchanger and a heat exchanger which has a coiled tube in which a short axial expansion of the coaxial tube can be achieved while ensuring adequate heat exchange conditions, without the coaxial tube having to be made longer or having to be oversized with regard to the radii of the turns.
  • the coaxial tube is first wound in a special manner in a special manner between two end tangential longitudinal sections serving for the fluid connection. Beginning with a tangential length segment, a turn with the greatest radial extension follows. Subsequently, the radial extension of the turns from turn to turn is reduced by such an amount that the outer radial extension of the next turn is smaller than the inner radial extension of the previous turn.
  • the number of turns from the largest turn in terms of radial extension to the smallest turn in this regard is wound helically depends on the installation space available on the circumference of the coiled tube. Due to the constant reduction in the radial extent of the turns, the coaxial tube thus has a conical outer contour.
  • the turn is wound with the smallest radial extension, another turn is wound with this extension, from which the radial extension of each subsequent turn then increases by such an amount during further winding that the outer radial extension of the wound turn is smaller than that inner radial extension of the following turn.
  • the coaxial tube After winding the last turn with the largest radial extent, which then also ends in a tangential length section, the coaxial tube, which is spirally coiled in this way, has a double conical, centrally constricted diaboloidal outer contour in this deformation stage.
  • a coaxial tube that is spirally coiled in this way has an extremely small axial length. It has the advantage that it has a performance of z. B. 24 kW compared to the conventionally coiled cylindrical configuration with a tube length of about 13 m now only needs a tube length of about 6 m. The material saving is therefore considerable.
  • coaxial tubes can be spiraled if necessary, which have more than four layers.
  • the objective solution of the invention is seen in principle in the features of claim 3.
  • the coiled tube thus has at least two layers lying directly next to each other in parallel.
  • the turns in each layer run spirally in one plane.
  • the largest turns in the radial extent of the outer layers end in tangential, preferably parallel to each other longitudinal sections which serve for the fluid connection.
  • the helically coaxial tube has only two layers, the smallest turns of the two layers in the radial extent are connected to one another.
  • the inner tube and the outer tube are according to claim 6 spaced from each other by spacers.
  • the spacers can form one-piece components of the inner tube or the outer tube. You can also be designed in one piece with both the inner tube and the outer tube.
  • the spacers are preferably web-like according to claim 7, although other spacers, for. B. in the form of a coiled wire are conceivable.
  • the web-like spacers extend parallel to the longitudinal axis of the coaxial tube.
  • the spacers are arranged offset to one another in the circumferential direction of the gap between the inner tube and the outer tube.
  • at least three spacers are provided which are evenly offset on the circumference.
  • the spacers are arranged offset to one another in the longitudinal direction of the coaxial tube, then it is preferably a short spacer which makes it possible for the fluid guided in the gap between the inner tube and the outer tube to be able to exchange permanently over the cross section of the gap and not flows linearly through the coaxial tube. This improves heat exchange.
  • the spacers have a length which corresponds approximately to the distance between two successive spacers in the longitudinal direction of the coaxial tube.
  • the inner tube can be profiled on its inner or outer surface. These are preferably grooves which extend at an angle to the longitudinal axis of the coaxial tube. When the grooves intersect, the ribs then formed can have different heights.
  • both the inner tube and the outer tube can consist of a metallic material.
  • this is a non-ferrous metal according to claim 15, copper or a copper alloy preferably being used according to claim 16.
  • the inner tube is then formed from copper or a copper alloy, while the outer tube consists of a thermoplastic, in particular a PE-cross-linked plastic.
  • the coaxial tube 1 as can be seen in particular from FIGS. 8 and 9, consists of a circular inner tube 3 made of a copper alloy and a circular outer tube 4 likewise consisting of a copper alloy. Between the inner tube 3 and the outer tube 4 there is an annular gap 5 for a Fluid formed which is in heat-exchanging contact with a fluid guided in the inner tube 3.
  • the distance between the inner tube 3 and the outer tube 4 is generated by web-like spacers 6, which are evenly offset from one another by 120 ° in the circumferential direction of the gap 5 and are also offset from one another in the longitudinal direction of the gap 5.
  • the length L of the spacers 6 corresponds approximately to the distance A from two spacers 6 which follow one another in the longitudinal direction of the gap 5 and are arranged offset with respect to one another.
  • the finished spirally coiled two-ply coaxial tube 1 of FIGS. 1, 3 and 4 is produced in that the coaxial tube 1, starting from a tangentially extending longitudinal section 7, initially by reducing the radial extent E, E1, E2, E3, E4 of winding 8, 9, 10, 11, 12 to turn 9, 10, 11, 12, 13 and then again increasing the radial extension E5, E6 E7, E8, E9 from turn 13, 14, 15, 16 to turn 14, 15 16, 17 ( Figure 2), ending in a tangential length section 18, with a double conical, centrally constricted outer contour is wound helically.
  • the outer radial extension E1 of the turn 9 following the winding 8 which is largest in the radial extension E during the winding process is smaller than the radial extension E of the largest winding 8.
  • the subsequent windings 9-12 of the conical length section 19 of the deformed intermediate stage 21 of the coaxial tube 1 are then designed accordingly in stages.
  • the tangential longitudinal sections 7, 18 serve for the fluid connection. They extend parallel to one another both in the plane according to FIG. 1 and in the plane according to FIG. 3.
  • the windings 8-17 of the coaxial tube 1 are then pressed together with an axial force F until the two layers 22, 23 of the final stage 24 of the coaxial tube 1 according to FIG. 3 result.
  • the coaxial tube 1 thus formed can then be integrated into the container 2 according to FIG. 4.
  • the container is indicated in dash-dotted lines.
  • FIGS. 5 to 7 The embodiment of a coaxial tube 25 that can be seen in FIGS. 5 to 7 is based on the same principle with regard to the production as was previously described with reference to FIGS. 1 to 4, 8 and 9.
  • This coaxial tube 25 is produced in that, starting from a tangentially extending length section 41, it initially reduces the radial extension E, E1, E2, E3 from turn 8, 9, 10, 11 to turn 9, 10, 11, 12 then increasing the radial extension E5-E9 from turn 13, 14, 15, 16 to turn 14, 15, 16, 17 then reducing the radial extension E10-E14 from turn 26, 27, 28, 29 to turn 27, 28 , 29, 30 and finally increasing the radial extension E15-E19 from turn 31, 32, 33, 34 to turn 32, 33, 34, 35, ending in a tangential length section 36, with a four-conical, double constricted outer contour wound helically will (Figure 5).
  • this spirally wound coaxial tube 25 are pushed together with the application of an axial force F until the four-layer structure according to FIG. 7 is reached.
  • this four-layer coaxial tube 25 on the one hand the smallest turns 12, 31 of the two outer layers 37, 38 in the radial extension E4, E5 with the smallest turns 13, 30 of the respectively adjacent inner layers 39, 40 in the radial extension E5, E14 and on the other hand the in the radial extension E9, E10 largest turns 17, 26 of the inner layer 39, 40 connected to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP97108997A 1996-06-17 1997-06-04 Dispositif pour la fabrication de tubes concentriques enroulés et échangeur de chaleur à tubes concentriques enroulés Expired - Lifetime EP0814312B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624030A DE19624030A1 (de) 1996-06-17 1996-06-17 Verfahren zur Herstellung eines gewendelten Koaxialrohrs für einen Wärmetauscher und Wärmetauscher, der ein gewendeltes Koaxialrohr aufweist
DE19624030 1996-06-17

Publications (3)

Publication Number Publication Date
EP0814312A2 true EP0814312A2 (fr) 1997-12-29
EP0814312A3 EP0814312A3 (fr) 1999-06-02
EP0814312B1 EP0814312B1 (fr) 2004-01-14

Family

ID=7797108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108997A Expired - Lifetime EP0814312B1 (fr) 1996-06-17 1997-06-04 Dispositif pour la fabrication de tubes concentriques enroulés et échangeur de chaleur à tubes concentriques enroulés

Country Status (3)

Country Link
EP (1) EP0814312B1 (fr)
AT (1) ATE257938T1 (fr)
DE (2) DE19624030A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019412A1 (fr) * 1998-08-20 2001-03-22 Hans Biermaier Dispositif de sterilisation thermique de liquides
EP1752718A1 (fr) * 2005-08-05 2007-02-14 Riello S.p.a. Echangeur de chaleur et méthode de fabrication de celui-ci
US7836942B2 (en) 2007-02-05 2010-11-23 Riello S.P.A. Heat exchanger and method of producing the same
US20150315937A1 (en) * 2012-12-14 2015-11-05 Renate Kintea Heat engine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19944951B4 (de) * 1999-09-20 2010-06-10 Behr Gmbh & Co. Kg Klimaanlage mit innerem Wärmeübertrager
DE19944950B4 (de) * 1999-09-20 2008-01-31 Behr Gmbh & Co. Kg Klimaanlage mit innerem Wärmeübertrager
US6484569B1 (en) * 2000-10-27 2002-11-26 Waters Investments Limited Tube-in-tube thermal exchanger for liquid chromatography systems
KR101608996B1 (ko) * 2010-01-11 2016-04-05 엘지전자 주식회사 열 교환기
DE102010008175B4 (de) 2010-02-16 2014-12-04 Thesys Gmbh Wärmeübertrager
DE102011118164C5 (de) 2010-12-29 2018-08-30 Thesys Gmbh Wärmeübertrager und Verfahren zum Betreiben eines Wärmeübertragers
DE102013208444A1 (de) * 2012-05-22 2013-11-28 Robert Bosch Gmbh Vorrichtung zum Erwärmen einer Masse, insbesondere einer Süßwarenmasse, und Verfahren zur Herstellung der Vorrichtung
DE102014018817A1 (de) * 2014-12-19 2016-06-23 Schmöle GmbH Verfahren zur Bereitstellung eines Rippenrohrkörpers eines Wärmetauschers und Rippenrohrwendel
CN108613539B (zh) * 2018-04-02 2020-09-04 广德美好包装科技有限公司 一种热回收交换机的热交换系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB138870A (en) * 1919-02-08 1921-08-08 Griscom Russell Co Improvements in or relating to heat interchangers
CH173859A (de) * 1933-05-12 1934-12-15 Sulzer Ag Wärmeaustauscher.
SE460684B (sv) * 1985-10-02 1989-11-06 Alexander Consulting Ab Vaermevaexlare med koncentriska roer kopplade i serie genom urtagningar i loestagbara aendplattor av laettbearbetat material
GB9421320D0 (en) * 1994-10-19 1994-12-07 Jackson Harry E Shower with economiser preheater
US5522453A (en) * 1995-03-22 1996-06-04 Green; Kenneth E. Washer fluid heater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019412A1 (fr) * 1998-08-20 2001-03-22 Hans Biermaier Dispositif de sterilisation thermique de liquides
EP1752718A1 (fr) * 2005-08-05 2007-02-14 Riello S.p.a. Echangeur de chaleur et méthode de fabrication de celui-ci
US7836942B2 (en) 2007-02-05 2010-11-23 Riello S.P.A. Heat exchanger and method of producing the same
US20150315937A1 (en) * 2012-12-14 2015-11-05 Renate Kintea Heat engine

Also Published As

Publication number Publication date
EP0814312B1 (fr) 2004-01-14
EP0814312A3 (fr) 1999-06-02
DE19624030A1 (de) 1997-12-18
DE59711199D1 (de) 2004-02-19
ATE257938T1 (de) 2004-01-15

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