DE3612770A1 - Heat exchanger - Google Patents

Heat exchanger

Info

Publication number
DE3612770A1
DE3612770A1 DE19863612770 DE3612770A DE3612770A1 DE 3612770 A1 DE3612770 A1 DE 3612770A1 DE 19863612770 DE19863612770 DE 19863612770 DE 3612770 A DE3612770 A DE 3612770A DE 3612770 A1 DE3612770 A1 DE 3612770A1
Authority
DE
Germany
Prior art keywords
tube
heat exchanger
tubes
medium
register
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.)
Ceased
Application number
DE19863612770
Other languages
German (de)
Inventor
Wolfgang Haferkamp
Bernd Jaworek
Elmar Schaefer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19863612770 priority Critical patent/DE3612770A1/en
Publication of DE3612770A1 publication Critical patent/DE3612770A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/08Tubular elements crimped or corrugated in longitudinal section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42Tubular 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42Tubular 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
    • F28F1/424Means comprising outside portions integral with inside portions
    • F28F1/426Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00Heat exchange conduits
    • F28F2210/06Heat exchange conduits having walls comprising obliquely extending corrugations, e.g. in the form of threads

Abstract

Because, as is generally known, the degree of heat exchange depends not only on the temperature difference and the exchange surface but also on the path of the medium through the pipe, the speed and its thorough mixing, by using tubes with screw-shaped corrugation or twist in heat exchange apparatuses of the most different arrangement this effect can be used to increase the exchange efficiency.

Description

Beschreibung der ErfindungDescription of the invention

Die Erfindung betrifft die Verwendung von Rohren mit schrauben­ förmiger Wellung oder Verwindung für Zwecke des Wärmetausches (Fig. 1).The invention relates to the use of tubes with screw-shaped corrugation or twisting for the purpose of heat exchange ( Fig. 1).

Für Wärmetauscher werden meist Glattrohre oder Rippenrohre ver­ wendet. Auch ringförmig gewellte Rohre sind schon vorgeschlagen worden. Hier soll der Effekt der Oberflächenvergrößerung genutzt werden. Bei Ringspaltwärmetauschern ist schon der Einsatz von schraubenförmig gewellten Rohren vorgeschlagen worden, um neben der Rohroberflächenvergrößerung den Effekt der Zwangsführung zu nutzen und zu verbessern.Smooth tubes or finned tubes are usually used for heat exchangers turns. Tubular corrugated tubes have also been proposed been. Here the effect of the surface enlargement should be used will. In the case of annular gap heat exchangers, the use of helically corrugated tubes have been proposed to be next to the pipe surface enlargement has the effect of positive guidance use and improve.

Die Erfindung löst die Aufgabe, die Wärmeübertragung vom Medium im Rohrinneren an das die Rohrwand umgebende Medium dadurch zu erhöhen, daß durch die Verwendung von Rohren mit schraubenför­ miger Wellung (Fig. 1) das Medium im Rohrinneren durch die drall­ artige Ausbildung der Rohrwände in Rotation (1) versetzt und dadurch der Weg des Mediums durch das Rohr wesentlich verlängert wird. Außerdem entstehen zusätzlich durch die Rotation Verwir­ belungen im Rohrinneren, durch die das Medium im Rohrinneren während des Durchgangs durch das Rohr vermischt wird. Hierdurch wird erreicht, daß im Gegensatz zum glatt- oder ringförmig ge­ wellten Rohr auch der innere Teil im Kern des Mediums besser mit der Rohrwand in Berührung kommt und so stärker am Austausch teilnimmt.The invention solves the problem of increasing the heat transfer from the medium inside the pipe to the medium surrounding the pipe wall in that by using pipes with a screw-shaped corrugation ( FIG. 1) the medium inside the pipe by the swirl-like design of the pipe walls in rotation ( 1 ) offset and thereby the path of the medium through the tube is significantly extended. In addition, the rotation creates turbulence in the interior of the tube, through which the medium in the interior of the tube is mixed during passage through the tube. This ensures that, in contrast to the smooth or ring-shaped corrugated tube, the inner part in the core of the medium comes into better contact with the tube wall and thus participates more in the exchange.

Anwendung der Erfindung, BeispieleApplication of the invention, examples

Der Einsatz von Rohren mit schraubenförmiger Wellung oder Ver­ windung ist vorgesehenThe use of tubes with helical corrugation or Ver winding is provided

  • a) bei Wärmetauschern aus Rohrbündeln (Fig. 2), Registern (Fig. 3) und Wendeln (Fig. 4),a) in the case of heat exchangers consisting of tube bundles ( FIG. 2), registers ( FIG. 3) and coils ( FIG. 4),
  • b) in Wärmetauschern mit Mantel und festen oder ausziehbaren Rohrbündeln oder Registern mit geraden oder gebogenen Rohren (Fig. 6),b) in heat exchangers with a jacket and fixed or extendable tube bundles or registers with straight or curved tubes ( FIG. 6),
  • c) in Wärmetauschern mit Mantel und festen oder ausziehbaren Rohrwendeln, die einzeln oder ineinander oder nebeneinander angeordnet sind und je nach Bedarf entweder innen oder außen in Serie oder Reihe geschaltet werden (Fig. 6),c) in heat exchangers with a jacket and fixed or extendable coils, which are arranged individually or in one another or next to one another and are connected either in series or in series either internally or externally ( FIG. 6),
  • d) in Wärmetauschern mit Mantel, bei denen die Anordnung nach a) und b) kombiniert sind (Fig. 5), d) in heat exchangers with a jacket, in which the arrangement according to a) and b) are combined ( FIG. 5),
  • e) in Wärmetausch-Einrichtungen ohne Außenmantel, bei denen die Rohrbündel, Register oder Wendel direkt in ein anderes Medium eingebracht werden (Fig. 7),e) in heat exchange devices without an outer jacket, in which the tube bundle, register or coil are introduced directly into another medium ( FIG. 7),
  • f) in Wärmetauschern nach a) bis d), unter Verwendung von doppel­ wandigen Sicherheitsrohren mit schraubenförmiger Wellung sowohl des Innen- als auch des Außenrohres, bei denen der Zwischenraum mit einem weiteren Medium (3) gefüllt ist, daß wohl auch an dem Tauschvorgang teilnimmt, dessen eigentliche Aufgabe aber ist, durch die Überwachung z. B. von Druckver­ änderungen Leckagen in den Rohren zu melden. Hierdurch können überwachte Sicherheitswärmetauscher zum Einsatz z. B. bei schädlichen und wassergefährdenden Stoffen und brennbaren Flüssigkeiten gebaut werden, bei denen der Nachteil der Min­ derung des Wärmeübergangs durch das Zwischenmedium durch den Einsatz von Rohren mit schraubenförmiger Wellung zum Teil ausgeglichen werden kann (Fig. 8).f) in heat exchangers according to a) to d), using double-walled safety tubes with helical corrugation of both the inner and the outer tube, in which the space is filled with another medium ( 3 ) that probably also participates in the exchange process , whose real task is, by monitoring z. B. changes from Druckver to report leaks in the pipes. As a result, monitored safety heat exchangers can be used e.g. B. with harmful and water-polluting substances and flammable liquids, in which the disadvantage of the reduction of heat transfer through the intermediate medium can be partially compensated for by the use of tubes with helical corrugation ( Fig. 8).

Claims (5)

1. Wärmetauscher mit Rohrbündeln, Registern oder Rohrwendeln, bei denen ein Medium zwangsgeführt durch die Rohre strömt und das zweite Medium frei um das Rohrbündel, Register oder die Rohrwendel strömt, dadurch gekennzeichnet, daß für die Rohr­ bündel, Register und Rohrwendel Rohre mit schraubenförmiger Wellung oder Verwindung verwendet werden.1. Heat exchanger with tube bundles, registers or tube coils, in which a medium flows positively through the tubes and the second medium flows freely around the tube bundle, register or tube coil, characterized in that for the tube bundle, register and tube coil, tubes with helical corrugation or twist can be used. 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß Rohrbündel, Rohrregister oder Rohrwendel mit schraubenförmiger Wellung oder Verwindung mit solchen aus Glattrohren kombiniert werden.2. Heat exchanger according to claim 1, characterized in that Pipe bundle, pipe register or pipe coil with helical Corrugation or twisting combined with those from smooth tubes will. 3. Wärmetauscher nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Rohrbündel, Rohrregister oder die Rohrwendel von einem Behälter umschlossen werden.3. Heat exchanger according to claim 1 and 2, characterized in that the tube bundle, tube register or the tube coil of one Containers are enclosed. 4. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß sie frei in ein sie umströmendes Medium eingebracht werden.4. Heat exchanger according to claim 1, characterized in that they are freely introduced into a medium flowing around them. 5. Wärmetauscher nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß als schraubenförmiges Wellrohr ein Doppelmantel-Sicher­ heitswellrohrwellrohr verwendet wird, dessen Zwischenraum mit einem Medium zur Leckage-Überwachung gefüllt ist.5. Heat exchanger according to claim 1 to 4, characterized in that as a helical corrugated tube, a double jacket safe Corrugated corrugated tube is used, the space with a Medium for leakage monitoring is filled.
DE19863612770 1986-04-16 1986-04-16 Heat exchanger Ceased DE3612770A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863612770 DE3612770A1 (en) 1986-04-16 1986-04-16 Heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863612770 DE3612770A1 (en) 1986-04-16 1986-04-16 Heat exchanger

Publications (1)

Publication Number Publication Date
DE3612770A1 true DE3612770A1 (en) 1987-10-22

Family

ID=6298776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863612770 Ceased DE3612770A1 (en) 1986-04-16 1986-04-16 Heat exchanger

Country Status (1)

Country Link
DE (1) DE3612770A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046828A1 (en) * 1996-06-05 1997-12-11 Waipuna International Limited Boiler having a helical coil of spirally corrugated pipe
EP1096131A1 (en) * 1999-10-26 2001-05-02 Senior Flexonics Automotive Limited Exhaust gas recirculation cooler
DE10056229A1 (en) * 2000-11-13 2002-06-20 Balcke Duerr Energietech Gmbh Heat exchanger for indirect heat exchange has tubes in several layers, with tubes in each layer parallel to each other in common plane
US8240365B2 (en) 2006-03-23 2012-08-14 Rolls-Royce Plc Heat exchanger
DE102013100886A1 (en) * 2013-01-29 2014-07-31 Benteler Automobiltechnik Gmbh Double-walled heat exchanger tube
CN105605951A (en) * 2016-03-22 2016-05-25 郑州大学 Novel variable-cross-section twisted tube heat exchanger
DE202022000948U1 (en) 2022-04-09 2022-04-28 Icm - Institut Chemnitzer Maschinen- Und Anlagenbau E.V. Tube for use in a heat exchanger for high pressure application and heat exchanger
DE102022001336A1 (en) 2022-04-09 2023-10-12 Icm - Institut Chemnitzer Maschinen- Und Anlagenbau E.V. Tube for use in a heat exchanger for high pressure application and heat exchanger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212727A1 (en) * 1982-03-09 1983-09-22 Unipektin AG, 8034 Zürich HEAT EXCHANGER
US4635711A (en) * 1985-02-15 1987-01-13 Harsco Corporation Double wall heat exchanger
DE3440060C2 (en) * 1984-11-02 1988-02-25 Witzenmann Gmbh, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212727A1 (en) * 1982-03-09 1983-09-22 Unipektin AG, 8034 Zürich HEAT EXCHANGER
DE3440060C2 (en) * 1984-11-02 1988-02-25 Witzenmann Gmbh, Metallschlauch-Fabrik Pforzheim, 7530 Pforzheim, De
US4635711A (en) * 1985-02-15 1987-01-13 Harsco Corporation Double wall heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DE-Z.: Car 1985, Januar S.34 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997046828A1 (en) * 1996-06-05 1997-12-11 Waipuna International Limited Boiler having a helical coil of spirally corrugated pipe
EP1096131A1 (en) * 1999-10-26 2001-05-02 Senior Flexonics Automotive Limited Exhaust gas recirculation cooler
US6460520B1 (en) 1999-10-26 2002-10-08 Senior Investments Ag Exhaust gas recirculation cooler
DE10056229A1 (en) * 2000-11-13 2002-06-20 Balcke Duerr Energietech Gmbh Heat exchanger for indirect heat exchange has tubes in several layers, with tubes in each layer parallel to each other in common plane
DE10056229B4 (en) * 2000-11-13 2004-09-09 Balcke-Dürr GmbH Heat exchanger for indirect heat exchange
EP1837616A3 (en) * 2006-03-23 2013-09-04 Rolls-Royce plc A heat exchanger
US8240365B2 (en) 2006-03-23 2012-08-14 Rolls-Royce Plc Heat exchanger
US9897387B2 (en) 2012-05-01 2018-02-20 Benteler Automobiltechnik Gmbh Heat exchanger with double-walled tubes
DE102013100886A1 (en) * 2013-01-29 2014-07-31 Benteler Automobiltechnik Gmbh Double-walled heat exchanger tube
DE102013100886B4 (en) * 2013-01-29 2015-01-08 Benteler Automobiltechnik Gmbh Heat exchanger for a motor vehicle with a double-walled heat exchanger tube
CN105605951A (en) * 2016-03-22 2016-05-25 郑州大学 Novel variable-cross-section twisted tube heat exchanger
DE202022000948U1 (en) 2022-04-09 2022-04-28 Icm - Institut Chemnitzer Maschinen- Und Anlagenbau E.V. Tube for use in a heat exchanger for high pressure application and heat exchanger
DE102022001336A1 (en) 2022-04-09 2023-10-12 Icm - Institut Chemnitzer Maschinen- Und Anlagenbau E.V. Tube for use in a heat exchanger for high pressure application and heat exchanger

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OP8 Request for examination as to paragraph 44 patent law
OR8 Request for search as to paragraph 43 lit. 1 sentence 1 patent law
8105 Search report available
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