AT410190B - METHOD FOR PRODUCING A FLANGE HEAT EXCHANGER - Google Patents

METHOD FOR PRODUCING A FLANGE HEAT EXCHANGER Download PDF

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Publication number
AT410190B
AT410190B AT52997A AT52997A AT410190B AT 410190 B AT410190 B AT 410190B AT 52997 A AT52997 A AT 52997A AT 52997 A AT52997 A AT 52997A AT 410190 B AT410190 B AT 410190B
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AT
Austria
Prior art keywords
tube
stainless steel
fins
heat exchanger
steel foil
Prior art date
Application number
AT52997A
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German (de)
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ATA52997A (en
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Vaillant Gmbh
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/154—Making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • 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
    • F28F1/30—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 the means being attachable to the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/145—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using fluid fuel
    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels

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

Description

AT 410 190 BAT 410 190 B

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Lamellenwärmetauschers gemäß dem Oberbegriff des Patentanspruches.The invention relates to a method for producing a finned heat exchanger according to the preamble of the claim.

Ein solches Verfahren wurde z.B. durch die EP 184 612 B2 vorgeschlagen. Bei diesem bekannten Verfahren wird eine Edelstahlfolie an mehreren Stellen an einem Rohr angeschweißt oder angelötet, wobei vor dem Löten dieser Bereich durch eine Kappe abgedeckt wird. Dabei erfolgt das Anlöten in dem in Einschubrichtung des Rohres in ein Lamellenpaket vorne liegenden Bereich des Rohres. Nach dem Einschieben erfolgt die Fixierung der Lamellen ausschließlich durch das Aufweiten des Rohres.Such a method has been e.g. proposed by EP 184 612 B2. In this known method, a stainless steel foil is welded or soldered to a pipe at several points, this area being covered by a cap before the soldering. The soldering is carried out in the area of the tube at the front in the direction of insertion of the tube into a plate pack. After insertion, the fins are fixed only by widening the tube.

Bei diesem bekannten Verfahren wird eine unbeschichtete Edelstahlfolie verwendet.In this known method, an uncoated stainless steel foil is used.

Bei diesem Verfahren ergibt sich der Nachteil, dass trotz des Aufweitens des Rohres der Wärmeübergang zwischen den Lamellen und dem Rohr keineswegs optimal ist.This method has the disadvantage that, despite the expansion of the tube, the heat transfer between the fins and the tube is by no means optimal.

Ziel der Erfindung ist es, diesen Nachteil zu vermeiden und ein Verfahren der eingangs erwähnten Art vorzuschlagen, mit dem ein optimaler Wärmeübergang zwischen den Lamellen und dem Rohr erreichbar ist.The aim of the invention is to avoid this disadvantage and to propose a method of the type mentioned at the beginning with which an optimal heat transfer between the fins and the tube can be achieved.

Erfindungsgemäß wird dies bei einem Verfahren der eingangs näher bezeichneten Art durch die kennzeichnenden Merkmale des Patentanspruches erreicht.According to the invention, this is achieved in a method of the type specified in the introduction by the characterizing features of the patent claim.

Durch die vorgeschlagenen Maßnahmen ist gewährleistet, dass die Lamellen mit dem Rohr verlötet werden und dadurch ein optimaler Wärmeübergang gewährleistet ist. Weiterhin ergibt sich der Vorteil, dass die Edelstahlfolie beim Verlöten der Lamellen gleichzeitig auch mit dem Rohr verlötet wird, wodurch sich eine weitere Verbesserung des Wärmeüberganges zum das Rohr durchströmenden Wärmetauschmediums ergibt. Schlussendlich ergibt sich der Vorteil einer vollständigen Ummantelung der Edelstahlfolie, wodurch die Gefahr einer Ablösung der Lotplattierung von der Edelstahlfolie entsprechend vermindert ist.The proposed measures ensure that the fins are soldered to the tube, thereby ensuring optimal heat transfer. Furthermore, there is the advantage that the stainless steel foil is also soldered to the tube when the fins are soldered, which results in a further improvement in the heat transfer to the heat exchange medium flowing through the tube. Ultimately, there is the advantage of a complete sheathing of the stainless steel foil, whereby the risk of the solder plating detaching from the stainless steel foil is correspondingly reduced.

Die Erfindung wird nun anhand der Zeichnung näher erläutert. Dabei zeigen:The invention will now be explained in more detail with reference to the drawing. Show:

Fig. 1 schematisch einen Wasserheizer,1 schematically shows a water heater,

Fig. 2 einen nach dem erfindungsgemäßen Verfahren hergestellten Lamellenwärmetauscher,2 shows a finned heat exchanger produced by the method according to the invention,

Fig. 3 und 4 Querschnitte durch eine doppelseitig plattierte Edelstahlfolie,3 and 4 cross sections through a double-sided clad stainless steel foil,

Fig. 5 und 6 Querschnitte durch einseitig plattierte Edelstahlfolien5 and 6 cross sections through stainless steel foils clad on one side

Gleiche Bezugszeichen bedeuten in allen Figuren gleiche Einzelheiten.The same reference numerals mean the same details in all figures.

Der Wasserheizer nach der Fig. 1 weist einen Brenner 1 auf, der über ein mit einem Stellmagneten 20 versehenes Gasventil 2 und eine Gasleitung 3 mit Brennstoff versorgbar ist.1 has a burner 1 which can be supplied with fuel via a gas valve 2 provided with an actuating magnet 20 and a gas line 3.

Der Brenner 1 beaufschlagt einen Lamellenwärmetauscher 4, der über eine Vorlaufleitung 5 mit einer Heizkörperanordnung 6 verbunden ist. Diese ist über eine Rücklaufleitung 7 mit einer mit einem Elektromotor 21 versehenen Umwälzpumpe 8 verbunden, die über eine Verbindungsleitung 9 mit dem Lamellenwärmetauscher 4 verbunden ist.The burner 1 acts on a finned heat exchanger 4 which is connected to a radiator arrangement 6 via a flow line 5. This is connected via a return line 7 to a circulation pump 8 provided with an electric motor 21, which is connected to the finned heat exchanger 4 via a connecting line 9.

Die Umwälzpumpe 8 und das Gasventil 2 und damit der Brenner 1 ist von einer Steuerung 10 gesteuert, die über Signalleitungen 11 mit einem Vorlauf-Temperaturfühler 12, einem Außentemperaturfühler 13 und einem Raumtemperaturfühler 14 verbunden ist. Dabei sind der Stellmagnet 20 des Gasventiles 2 und der Elektromotor 21 der Umwälzpumpe 8 über Steuerleitungen 15 mit der Steuerung 10 verbunden.The circulation pump 8 and the gas valve 2 and thus the burner 1 is controlled by a controller 10, which is connected via signal lines 11 to a flow temperature sensor 12, an outside temperature sensor 13 and a room temperature sensor 14. The control magnet 20 of the gas valve 2 and the electric motor 21 of the circulating pump 8 are connected to the controller 10 via control lines 15.

Der Lamellenwärmetauscher 4 weist, wie aus der Fig. 2 zu ersehen ist, ein Rohr 16 auf, auf dem Lamellen 17 gehalten sind. Dabei ist das Rohr 16 mit einer Edelstahlfolie 18 umgeben, die mit einer Lötplattierung 19 versehen ist. Dabei zeigt die Fig. 2 den Lamellenwärmetauscher 4 während der Herstellung und zwar in jenem Zustand, wie er sich nach dem Einschieben des Rohres 16 in ein Lamellenpaket und der Aufweitung des Rohres 16 ergibt.As can be seen from FIG. 2, the finned heat exchanger 4 has a tube 16 on which fins 17 are held. The tube 16 is surrounded by a stainless steel foil 18, which is provided with a solder plating 19. 2 shows the finned heat exchanger 4 during manufacture, in the state in which it results after the tube 16 has been inserted into a fin package and the widening of the tube 16.

Die Fig. 3 zeigt eine Ausführungsform einer plattierten Edelstahlfolie. Dabei ist die Edelstahlfolie 18 an beiden Seiten mit einem Lot 19 plattiert, wobei die Plattierung bündig mit den Kanten der Edelstahlfolie endet.3 shows an embodiment of a plated stainless steel foil. The stainless steel foil 18 is clad on both sides with a solder 19, the cladding ending flush with the edges of the stainless steel foil.

Bei der plattierten Edelstahlfolie nach der Fig. 4 ist die Edelstahlfolie 18 ebenfalls an beiden Seiten mit einem Lot 19 plattiert. Dabei ist jedoch eine jede Lötplattierung 19 über je eine Kante 22 der Edelstahlfolie 18 gezogen, so dass diese vollständig vom Lot, das z.B. in Form einer Lötfolie aufgebracht sein kann, eingehüllt ist.In the plated stainless steel foil according to FIG. 4, the stainless steel foil 18 is also plated with a solder 19 on both sides. However, each solder plating 19 is drawn over an edge 22 of the stainless steel foil 18 so that it is completely detached from the solder, e.g. can be applied in the form of a solder foil, is encased.

Die Ausführungsform einer plattierten Edelstahlfolie nach der Fig. 5 weist lediglich an einer Seite der Edelstahlfolie 18 eine Lötplattierung 19 auf, die bündig mit den Seitenkanten 22 der Edelstahlfolie 18 endet. 2The embodiment of a clad stainless steel foil according to FIG. 5 has a solder plating 19 only on one side of the stainless steel foil 18, which ends flush with the side edges 22 of the stainless steel foil 18. 2

Claims (2)

AT 410 190 B Die Ausführungsform nach der Fig. 6 unterscheidet sich von jener nach der Fig. 5 nur dadurch, dass die Lötplattierung 19 U-förmig über die Längskanten 22 der Edelstahlfolie 18 gezogen ist. Bei der Herstellung eines Lamellenwärmetauschers 4 nach der Erfindung wird das Rohr 4 nach dem Aufbringen der plattierten Lötfolie 18 und dem Einschieben in ein Paket von Lamellen 17 aufgeweitet und anschließend die Lamellen 17 mit dem Rohr 16 verlötet. PATENTANSPRUCH: Verfahren zur Herstellung eines Lamellenwärmetauschers (4), nach dem auf ein von Rauchgasen beaufschlagbares und Lamellen (17) tragendes Rohr (16) eine Edeistahlfolie (18) an der Außenseite des Rohres (16) aufgebracht wird, wobei die Folie an mehreren Stellen angelötet wird und das Rohr (16) nach dem Einschieben in ein Lamellenpaket aufgeweitet wird, dadurch gekennzeichnet, dass in an sich bekannterWeise mit einem Lot (19) beidseitig plattierte Edelstahlfolien (18) auf das Rohr (16) aufgebracht werden und das Rohr (16) nach dem Aufweiten mit den Lamellen (17) verlötet wird und dass die Edelstahlfolie (18) auch an ihren Seitenrändern (22) mit Lot (19) überzogen ist. HIEZUAT 410 190 B The embodiment according to FIG. 6 differs from that according to FIG. 5 only in that the solder plating 19 is drawn in a U-shape over the longitudinal edges 22 of the stainless steel foil 18. In the manufacture of a finned heat exchanger 4 according to the invention, the tube 4 is expanded after the application of the plated solder foil 18 and the insertion into a packet of fins 17 and then the fins 17 are soldered to the tube 16. PATENT CLAIM: Process for the manufacture of a finned heat exchanger (4), according to which a stainless steel foil (18) is applied to the outside of the tube (16) on a tube (16) which is exposed to fumes and carries fins (17), the foil being applied at several points is soldered on and the tube (16) is expanded after being pushed into a plate pack, characterized in that stainless steel foils (18) plated on both sides with a solder (19) are applied to the tube (16) in a manner known per se and the tube (16 ) after the expansion with the fins (17) is soldered and that the stainless steel foil (18) is also coated on its side edges (22) with solder (19). Hiezu 2 BLATT ZEICHNUNGEN 32 SHEET OF DRAWINGS 3
AT52997A 1996-04-03 1997-03-26 METHOD FOR PRODUCING A FLANGE HEAT EXCHANGER AT410190B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996114770 DE19614770C2 (en) 1996-04-03 1996-04-03 Method of manufacturing a finned heat exchanger

Publications (2)

Publication Number Publication Date
ATA52997A ATA52997A (en) 2002-07-15
AT410190B true AT410190B (en) 2003-02-25

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Application Number Title Priority Date Filing Date
AT52997A AT410190B (en) 1996-04-03 1997-03-26 METHOD FOR PRODUCING A FLANGE HEAT EXCHANGER

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AT (1) AT410190B (en)
CH (1) CH692725A5 (en)
DE (1) DE19614770C2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0184612A1 (en) * 1984-09-18 1986-06-18 Robert Bosch Gmbh Heat exchanger, especially for gas or oil fired water heaters
JPH01249294A (en) * 1988-03-29 1989-10-04 Nippon Stainless Steel Co Ltd Precoated brazing filler metal-coated metal sheet, production thereof and using method therefor
JPH02172875A (en) * 1988-12-23 1990-07-04 Sumitomo Precision Prod Co Ltd Soldering method for built-up structure made of stainless steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0184612A1 (en) * 1984-09-18 1986-06-18 Robert Bosch Gmbh Heat exchanger, especially for gas or oil fired water heaters
JPH01249294A (en) * 1988-03-29 1989-10-04 Nippon Stainless Steel Co Ltd Precoated brazing filler metal-coated metal sheet, production thereof and using method therefor
JPH02172875A (en) * 1988-12-23 1990-07-04 Sumitomo Precision Prod Co Ltd Soldering method for built-up structure made of stainless steel

Also Published As

Publication number Publication date
DE19614770A1 (en) 1997-10-23
CH692725A5 (en) 2002-10-15
ATA52997A (en) 2002-07-15
DE19614770C2 (en) 1998-11-19

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Effective date: 20160715