EP0772017A2 - Tube d'échangeur de chaleur - Google Patents

Tube d'échangeur de chaleur Download PDF

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Publication number
EP0772017A2
EP0772017A2 EP19960114202 EP96114202A EP0772017A2 EP 0772017 A2 EP0772017 A2 EP 0772017A2 EP 19960114202 EP19960114202 EP 19960114202 EP 96114202 A EP96114202 A EP 96114202A EP 0772017 A2 EP0772017 A2 EP 0772017A2
Authority
EP
European Patent Office
Prior art keywords
cross
heat exchanger
tube
section
exchanger tube
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.)
Withdrawn
Application number
EP19960114202
Other languages
German (de)
English (en)
Other versions
EP0772017A3 (fr
Inventor
Frank Dr.-Ing. Döring
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.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik 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 Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Publication of EP0772017A2 publication Critical patent/EP0772017A2/fr
Publication of EP0772017A3 publication Critical patent/EP0772017A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • 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
    • 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
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/424—Means comprising outside portions integral with inside portions
    • F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex

Definitions

  • the invention relates to a heat exchanger tube according to the preamble of claim 1.
  • tube bundle heat exchangers are also used in heating technology.
  • condensing technology is becoming increasingly important, ie the boilers use the heat of condensation contained in the water vapor by cooling the combustion gases to below the dew point.
  • the heat exchangers used on the one hand require a large heat transfer surface which is adapted to the lower temperature differences between exhaust gas and heating water, but on the other hand construction volumes and material expenditure are limited.
  • corrosion resistance and a low pressure loss when exposed to exhaust gas and condensed water must be guaranteed, which is why stainless steel is mainly used as the material.
  • the heat transfer performance depends very much on the flow conditions on the heat exchanger tubes.
  • a turbulent flow inside the pipes has proven to be favorable. This can be achieved with a corresponding amount of material by means of turbulators which are inserted into the tubes or by a special design of the tube wall.
  • the invention had for its object to provide a heat exchanger tube which can be produced cost-effectively and which achieves high heat transfer rates with a low use of material by targeted introduction of flow.
  • the heat exchanger tube has an approximately circular connection cross section at its two ends.
  • the entire intermediate middle tube part is formed by pressing from two sides as a flat channel, the cross-sectional shape of which varies or is constant over the length.
  • the central tube part essentially has an oval and rectangular cross section. So it is possible with simple forming techniques to vary this in the longitudinal direction, by the flow rate to keep the heating gases flowing inside at the same level when they cool down.
  • the flat channels prevent core flow and promote heat dissipation in the wall area. When used under high pressure loads from the outside, support points can easily be created in the center of the profile by pressing two opposite pipe walls together.
  • embossments, beads or beads which run in a spiral, cross-spiral or radial fashion are preferably provided on the central tube region.
  • the roughness of the inner and / or outer tube wall can be increased by screwed-in grooves or a coating.
  • the measures lead to the formation of a continuous, highly turbulent boundary layer without significant core flow.
  • the heat transfer properties reach qualities as in plate heat exchangers.
  • the use of pipes also offers advantages in terms of strength and low-stress connection when creating larger units. Tests have confirmed lower pressure drop on the hot gas side of these pipes than with inserted turbulators. This means that very efficient, compact and material-saving heat exchangers can be manufactured, especially for the condensing technology application.
  • the heat exchanger tube has an approximately circular connection cross section 1 at its two ends.
  • the entire intermediate tube section here is formed by pressing from two sides as a flat channel 2, the cross-sectional shape of which is constant or varies over the length. For example, the change in cross section takes place continuously as in FIG. 1 or in stages 3 as in FIG. 2.
  • oval 4 and rectangular cross sections 5 can be produced.
  • the tube walls bear high pressure loads from the outside.
  • beads 7 running in a swirl-like or cross-swirl shape are attached to the central tube area.

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)
EP19960114202 1995-11-02 1996-09-05 Tube d'échangeur de chaleur Withdrawn EP0772017A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29517325U 1995-11-02
DE29517325U DE29517325U1 (de) 1995-11-02 1995-11-02 Wärmetauscherrohr

Publications (2)

Publication Number Publication Date
EP0772017A2 true EP0772017A2 (fr) 1997-05-07
EP0772017A3 EP0772017A3 (fr) 1998-07-29

Family

ID=8014884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960114202 Withdrawn EP0772017A3 (fr) 1995-11-02 1996-09-05 Tube d'échangeur de chaleur

Country Status (2)

Country Link
EP (1) EP0772017A3 (fr)
DE (1) DE29517325U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725454A1 (de) * 1997-06-16 1999-01-21 Georg Wall Spundbohle
EP1221579A1 (fr) 2001-01-05 2002-07-10 hde Metallwerk GmbH Tube d'échangeur de chaleur pour fluides liquides et gazeux
WO2005014667A1 (fr) * 2003-07-24 2005-02-17 Bayer Technology Services Gmbh Procede et dispositif pour eliminer des substances volatiles contenues dans des milieux a viscosite elevee
US7575623B2 (en) 2003-07-07 2009-08-18 Bayer Technology Services Gmbh Method for leaching aluminium-metal alloys
GB2509762A (en) * 2013-01-14 2014-07-16 Halla Visteon Climate Control Tube for a heat exchanger

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29709136U1 (de) * 1997-05-24 1997-07-24 Viessmann Werke Gmbh & Co, 35108 Allendorf Wärmetauscherrohr
DE19731190A1 (de) * 1997-07-21 1999-01-28 Buderus Heiztechnik Gmbh Wärmetauscherrohr für die Heizgasführung in Heizkesseln
FR2793313B1 (fr) * 1999-05-04 2001-08-03 Guillot Ind Sa Echangeur de chaleur destine a equiper une chaudiere a eau chaude
DE102004020346B4 (de) * 2004-04-27 2009-06-10 Robert Bosch Gmbh Brennwertheizkessel
DE102009013269A1 (de) * 2009-03-05 2010-09-09 E.G.O. Elektro-Gerätebau GmbH Durchfluss-Heizeinrichtung und Verfahren zur Herstellung einer Durchfluss-Heizeinrichtung
PL3276290T3 (pl) * 2016-07-26 2020-04-30 S.A.R.I. - Stampi Articoli Industriali Di Zen Bortolo Urządzenie rurowe dla przepływu płynu wymieniającego ciepło, w szczególności w wymiennikach ciepła

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7427097U (de) 1976-06-10 R. & G. Schmoele Metallwerke, 5750 Menden Rohr für Wärmeaustauscher für flüssige Medien

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216819A (en) * 1976-09-09 1980-08-12 Union Carbide Corporation Enhanced condensation heat transfer device and method
US4589481A (en) * 1982-06-29 1986-05-20 Ab Zander & Ingestrom Tube heat exchanger
SE456935B (sv) * 1984-05-24 1988-11-14 Armaturjonsson Ab Vaermevaexlare daer stroemningsplaatar med strilhaal aer placerade i varje slingaav ett serpentinformat roer samt saett foer framstaellning
AT400365B (de) * 1993-10-15 1995-12-27 Fercher Josef Wärmetauscher
DE4343405A1 (de) * 1993-12-18 1995-06-22 Friedrich Ambs Gmbh & Co Kg Ap Rohr, insbesondere zur Verwendung als Wärmetauschrohr für Rohrbündelwärmeübertrager

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7427097U (de) 1976-06-10 R. & G. Schmoele Metallwerke, 5750 Menden Rohr für Wärmeaustauscher für flüssige Medien

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19725454A1 (de) * 1997-06-16 1999-01-21 Georg Wall Spundbohle
DE19725454C2 (de) * 1997-06-16 1999-05-20 Georg Wall Spundbohle
EP1221579A1 (fr) 2001-01-05 2002-07-10 hde Metallwerk GmbH Tube d'échangeur de chaleur pour fluides liquides et gazeux
DE10100241A1 (de) * 2001-01-05 2002-07-18 Hde Metallwerk Gmbh Wärmetauscherrohr für flüssige oder gasförmige Medien
US7575623B2 (en) 2003-07-07 2009-08-18 Bayer Technology Services Gmbh Method for leaching aluminium-metal alloys
WO2005014667A1 (fr) * 2003-07-24 2005-02-17 Bayer Technology Services Gmbh Procede et dispositif pour eliminer des substances volatiles contenues dans des milieux a viscosite elevee
US8074371B2 (en) 2003-07-24 2011-12-13 Bayer Technology Services Gmbh Process and apparatus for removing volatile substances from highly viscous media
GB2509762A (en) * 2013-01-14 2014-07-16 Halla Visteon Climate Control Tube for a heat exchanger
GB2509762B (en) * 2013-01-14 2015-02-04 Halla Visteon Climate Control Tube for Heat Exchanger
US10113811B2 (en) 2013-01-14 2018-10-30 Hanon Systems Tube for heat exchanger

Also Published As

Publication number Publication date
DE29517325U1 (de) 1996-02-01
EP0772017A3 (fr) 1998-07-29

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