EP0070371A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0070371A1
EP0070371A1 EP82104446A EP82104446A EP0070371A1 EP 0070371 A1 EP0070371 A1 EP 0070371A1 EP 82104446 A EP82104446 A EP 82104446A EP 82104446 A EP82104446 A EP 82104446A EP 0070371 A1 EP0070371 A1 EP 0070371A1
Authority
EP
European Patent Office
Prior art keywords
tubes
heat
heat transfer
heat exchanger
transfer tubes
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
EP82104446A
Other languages
German (de)
English (en)
Other versions
EP0070371B1 (fr
Inventor
Karl-Heinz Funke
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.)
FUNKE WARMEAUSTAUSCHER APPARATEBAU KG
Original Assignee
FUNKE WARMEAUSTAUSCHER APPARATEBAU KG
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 FUNKE WARMEAUSTAUSCHER APPARATEBAU KG filed Critical FUNKE WARMEAUSTAUSCHER APPARATEBAU KG
Publication of EP0070371A1 publication Critical patent/EP0070371A1/fr
Application granted granted Critical
Publication of EP0070371B1 publication Critical patent/EP0070371B1/fr
Expired 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0229—Double end plates; Single end plates with hollow spaces

Definitions

  • the invention relates to a heat exchanger, in particular for exhaust gas heat utilization according to the preamble of claim 1.
  • Heat recovery from exhaust gases is increasingly demanded and is becoming increasingly important; Tube-bundle heat exchangers made of steel or high-alloy steel are preferably used for this.
  • the medium to be cooled e.g. Exhaust gas is usually led through the heat transfer pipes because the cleaning option is better provided while the medium to be heated, e.g. Water around which the pipes are led.
  • the object of the present invention is therefore to design the heat exchanger of the type mentioned at the outset in such a way that material fatigue and overload cannot occur even after a long period of use and thus e.g. the risk of cracks and leaks is avoided.
  • the design according to the invention creates, so to speak, a heat shield that shields the actual tube sheet of the heat transfer tubes from high temperatures and thus ensures that a practically negligible temperature gradient occurs between the two sides of the tube sheet; As a result, the material of the tube sheet can no longer tire or be overloaded, not even after a long period of use, and the risk of cracks and leaks is avoided.
  • the further embodiment according to claim 4 also reduces the heat transfer to the tube sheet of the heat transmission tubes; this is also the case due to the further configuration of the task solution according to the invention.
  • the second tube plate as indicated in claim 6, only needs to be provided on the inlet side.
  • the drawing shows in section the inlet and outlet side of a heat exchanger 2, which has a jacket tube 4, in which a tube bundle provided with baffles 6 made of heat transfer tubes 8 is arranged.
  • the heat transfer tubes 8 are seated on both sides in tube sheets 1o and 11 connected to the jacket tube 4 or sealed against the jacket tube.
  • a second tube sheet 12 is arranged at a short distance, in which a tube bundle of shorter tubes 14 is arranged.
  • the tubes 14 partially protrude into the heat transfer tubes 8, preferably up to just beyond the tube plate 10.
  • the outside diameter of the tubes 14 is smaller than the inside diameter of the heat transfer tubes 8, so that the tubes 14 and the heat transfer tubes 8 do not touch in the installed position.
  • the space 16 formed between the two tube sheets 10 and 12 is sealed to the outside, e.g. with a ring seal 18.
  • the space 16 itself can additionally with a poorly heat-conducting material, such as Asbestos, to be filled out.
  • an inlet chamber 20 is sealed (seal 21).
  • the heat exchanger tubes 8 open directly into an outlet chamber 19.
  • the casing tube 4 has an inlet opening 22 and an outlet opening 23, e.g. a neck, on.
  • the heat exchanger 2 shown is designed in particular for heat recovery from exhaust gases.
  • the up to 600 0 C or more hot exhaust gases are fed into the inlet chamber and flow from there through the tubes 14 and 8 to the outlet chamber. They give off their heat via the heat transfer tubes to the medium flowing around these heat transfer tubes, for example water, which flows into the jacket space 24 of the jacket tube 4 via the inlet opening 22.
  • the outer tube sheet 12 acts as a heat shield for the tube sheet 1o of the heat transfer tubes 8.
  • the tube sheet 1o which is cool towards the jacket space 24, can be on the Now no longer heat outside 26 so much that an excessive temperature gradient, excessive thermal stress and material fatigue and the resulting cracks occur.
  • the heat is absorbed by the tube sheet 12 and thus shielded from the tube sheet 12 with respect to the tube sheet 10. Since the inside 28 of the tube sheet 12 is not cooled, no large temperature differences can occur between the two sides of the tube sheet 12, so that thermal stresses do not arise. However, material fatigue that occurs over time as a result of the high exhaust gas temperatures and the resulting crack formation in the outer tube sheet 12 are also harmless because the shielding effect is not impaired thereby.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP82104446A 1981-07-22 1982-05-21 Echangeur de chaleur Expired EP0070371B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8121511U DE8121511U1 (de) 1981-07-22 1981-07-22 Wärmeaustauscher.
DE8121511U 1981-07-22

Publications (2)

Publication Number Publication Date
EP0070371A1 true EP0070371A1 (fr) 1983-01-26
EP0070371B1 EP0070371B1 (fr) 1985-07-17

Family

ID=6729668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104446A Expired EP0070371B1 (fr) 1981-07-22 1982-05-21 Echangeur de chaleur

Country Status (3)

Country Link
EP (1) EP0070371B1 (fr)
AT (1) ATE14346T1 (fr)
DE (2) DE8121511U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013171190A1 (fr) * 2012-05-15 2013-11-21 Behr Gmbh & Co. Kg Échangeur de chaleur de gaz d'échappement
EP3032209A1 (fr) * 2014-12-11 2016-06-15 Borsig GmbH Systeme de refroidisseur a injection
US20160215735A1 (en) * 2013-09-11 2016-07-28 International Engine Intellectual Property Company, Llc Thermal screen for an egr cooler
DE102021102847A1 (de) 2021-02-08 2022-08-11 Bayerische Motoren Werke Aktiengesellschaft Abgaskühleinrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262489A (en) * 1964-02-11 1966-07-26 Aerofin Corp Heat exchanger
US3374832A (en) * 1966-05-13 1968-03-26 Lummus Co Inlet cone device and method
US3504739A (en) * 1967-06-15 1970-04-07 Roy George Pearce Shell and tube heat exchangers
DE2441931A1 (de) * 1974-09-02 1976-03-11 Shell Int Research Waermetauscher und verfahren zu seiner verwendung
DE3000665A1 (de) * 1980-01-10 1981-07-16 Rheiner Maschinenfabrik Windhoff Ag, 4440 Rheine Verfahren zur herstellung eines doppelrohrs fuer kuehlvorrichtungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262489A (en) * 1964-02-11 1966-07-26 Aerofin Corp Heat exchanger
US3374832A (en) * 1966-05-13 1968-03-26 Lummus Co Inlet cone device and method
US3504739A (en) * 1967-06-15 1970-04-07 Roy George Pearce Shell and tube heat exchangers
DE2441931A1 (de) * 1974-09-02 1976-03-11 Shell Int Research Waermetauscher und verfahren zu seiner verwendung
DE3000665A1 (de) * 1980-01-10 1981-07-16 Rheiner Maschinenfabrik Windhoff Ag, 4440 Rheine Verfahren zur herstellung eines doppelrohrs fuer kuehlvorrichtungen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013171190A1 (fr) * 2012-05-15 2013-11-21 Behr Gmbh & Co. Kg Échangeur de chaleur de gaz d'échappement
US9791214B2 (en) 2012-05-15 2017-10-17 Mahle International Gmbh Exhaust gas heat exchanger
US20160215735A1 (en) * 2013-09-11 2016-07-28 International Engine Intellectual Property Company, Llc Thermal screen for an egr cooler
EP3032209A1 (fr) * 2014-12-11 2016-06-15 Borsig GmbH Systeme de refroidisseur a injection
CN105698572A (zh) * 2014-12-11 2016-06-22 波尔希克有限公司 淬火冷却系统
CN105698572B (zh) * 2014-12-11 2019-03-08 波尔希克有限公司 淬火冷却系统
DE102021102847A1 (de) 2021-02-08 2022-08-11 Bayerische Motoren Werke Aktiengesellschaft Abgaskühleinrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug

Also Published As

Publication number Publication date
ATE14346T1 (de) 1985-08-15
EP0070371B1 (fr) 1985-07-17
DE3264765D1 (en) 1985-08-22
DE8121511U1 (de) 1981-10-08

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