EP0933150A3 - Method for producing a heat exchanger for fuel fired water heaters - Google Patents

Method for producing a heat exchanger for fuel fired water heaters Download PDF

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Publication number
EP0933150A3
EP0933150A3 EP98122043A EP98122043A EP0933150A3 EP 0933150 A3 EP0933150 A3 EP 0933150A3 EP 98122043 A EP98122043 A EP 98122043A EP 98122043 A EP98122043 A EP 98122043A EP 0933150 A3 EP0933150 A3 EP 0933150A3
Authority
EP
European Patent Office
Prior art keywords
pipes
producing
heat exchanger
water heaters
widening
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
EP98122043A
Other languages
German (de)
French (fr)
Other versions
EP0933150A2 (en
Inventor
Heinz Ehrle
Dieter Krauss
Josef Reitstaetter
Manfred Seebauer
Gottfried Zoller
Hans-Ulrich Lenckner
Uwe Lindemann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0933150A2 publication Critical patent/EP0933150A2/en
Publication of EP0933150A3 publication Critical patent/EP0933150A3/en
Ceased legal-status Critical Current

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Classifications

    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08—Tube expanders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/24—Making finned or ribbed tubes by fixing strip or like material to tubes annularly-ribbed 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
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/125—Fastening; Joining by methods involving deformation of the elements by bringing elements together and expanding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Herstellung eines Wärmeübertragers für brennstoffbeheizte Wassererhitzer, mit wasserführenden Rohren und von diesen durchsetzten Lamellen, die zwischen sich Spalte zum Durchtritt der Verbrennungsgase bilden und durch Aufweiten der Rohre spaltlos an deren Umfang anliegen. Es wird vorgeschlagen, daß der die Rohre (10) aufweitende Arbeitsdruck bzw. der Preßdruck zwischen Rohr (10) und Lamelle (12) so groß gewählt und die Lamellen (12) so gestaltet bzw. bemessen sind, daß auch bei Verbrennungsgastemperaturen im Bereich von 1300°C die Lamellenfußbereiche (16) unter die Rekristallisationstemperatur des Lamellenwerkstoffs gekühlt sind und ein Festsitz der Lamellen (12) auf den Rohren (16) ohne Lötung gewährleistet ist. Dadurch kann auch bei den hohen Verbrennungsgastemperaturen ausgesetzten Primärwärmeübertragern eine Lötverbindung zwischen den Rohren und den Lamellen entfallen.

Figure 00000001
The invention relates to a method for producing a heat exchanger for fuel-heated water heaters, with water-carrying pipes and lamellas penetrated by them, which form gaps between them for the passage of the combustion gases and, without widening, lie against the circumference of the pipes by widening. It is proposed that the working pressure expanding the pipes (10) or the pressing pressure between the pipe (10) and the lamella (12) be chosen so large and the lamellae (12) are designed or dimensioned such that even at combustion gas temperatures in the range of 1300 ° C the slat base areas (16) are cooled below the recrystallization temperature of the slat material and a tight fit of the slats (12) on the tubes (16) without soldering is guaranteed. As a result, a soldered connection between the tubes and the fins can be omitted even with the primary heat exchangers exposed to high combustion gas temperatures.
Figure 00000001
EP98122043A 1998-01-28 1998-11-20 Method for producing a heat exchanger for fuel fired water heaters Ceased EP0933150A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803177 1998-01-28
DE1998103177 DE19803177B4 (en) 1998-01-28 1998-01-28 Process for producing a heat exchanger for fuel-fired water heaters

Publications (2)

Publication Number Publication Date
EP0933150A2 EP0933150A2 (en) 1999-08-04
EP0933150A3 true EP0933150A3 (en) 2000-05-03

Family

ID=7855880

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122043A Ceased EP0933150A3 (en) 1998-01-28 1998-11-20 Method for producing a heat exchanger for fuel fired water heaters

Country Status (2)

Country Link
EP (1) EP0933150A3 (en)
DE (1) DE19803177B4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10211591B4 (en) * 2002-03-15 2005-06-02 J. Eberspächer GmbH & Co. KG Air heater for integration into an air-conducting housing arrangement
CN109518442B (en) * 2018-12-24 2023-09-26 河南科隆集团有限公司 Rotary bulging dryer condenser structure
CN112683098B (en) * 2020-12-31 2023-07-04 南宁市安和机械设备有限公司 Dislocation dotting oil cooler pipe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR794298A (en) * 1934-11-17 1936-02-12 Labo Method of attaching fins to finned tubes and other parts
DE722235C (en) * 1932-04-16 1942-07-04 Manuf Generale Metallurg Sa Process for the manufacture of finned tubes
US4970770A (en) * 1986-02-13 1990-11-20 Flakt, Ab Method of making a coated heat exchanger with tubes and fins

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432905A (en) * 1964-07-06 1969-03-18 Halcon International Inc Method of fabricating heat transfer tubing
DE3522036A1 (en) * 1984-09-18 1986-03-20 Robert Bosch Gmbh, 7000 Stuttgart HEAT EXCHANGER, ESPECIALLY FOR GAS OR OIL HEATED WATER HEATERS
US4706355A (en) * 1984-12-11 1987-11-17 Q-Dot Corporation Method of making an internally grooved and expanded tubular heat exchanger apparatus
DD276441A1 (en) * 1988-10-31 1990-02-28 Mylau Apparatebau METHOD FOR PRODUCING A HEAT-CONDUCTIVE CONNECTION BETWEEN HEAT TRANSFER PIPES AND SURFACE-ENLARGING ELEMENTS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE722235C (en) * 1932-04-16 1942-07-04 Manuf Generale Metallurg Sa Process for the manufacture of finned tubes
FR794298A (en) * 1934-11-17 1936-02-12 Labo Method of attaching fins to finned tubes and other parts
US4970770A (en) * 1986-02-13 1990-11-20 Flakt, Ab Method of making a coated heat exchanger with tubes and fins

Also Published As

Publication number Publication date
DE19803177B4 (en) 2005-03-03
DE19803177A1 (en) 1999-08-05
EP0933150A2 (en) 1999-08-04

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