EP0239490B1 - Spiralwärmetauscher und Verfahren zu seiner Herstellung - Google Patents

Spiralwärmetauscher und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0239490B1
EP0239490B1 EP87400658A EP87400658A EP0239490B1 EP 0239490 B1 EP0239490 B1 EP 0239490B1 EP 87400658 A EP87400658 A EP 87400658A EP 87400658 A EP87400658 A EP 87400658A EP 0239490 B1 EP0239490 B1 EP 0239490B1
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EP
European Patent Office
Prior art keywords
sheet metal
section
spiral
sections
welded
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.)
Expired
Application number
EP87400658A
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English (en)
French (fr)
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EP0239490A1 (de
Inventor
Etienne Jouet
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Individual
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Individual
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Priority to AT87400658T priority Critical patent/ATE46966T1/de
Publication of EP0239490A1 publication Critical patent/EP0239490A1/de
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Publication of EP0239490B1 publication Critical patent/EP0239490B1/de
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    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae

Definitions

  • the invention relates to a spiral heat exchanger according to the preamble of claim 1 and its manufacturing method according to the preamble of claim 4.
  • This exchanger comprises a spiral body delimiting two spiral chambers nested around a transverse axis, of a sandwich assembly formed by three strips of sheets superimposed, namely two flat sheets between which is taken a corrugated sheet whose corrugations extend transversely, that is to say perpendicular to the length of the strips. It is therefore necessary to use three separate sheet metal strips to constitute the spiral body. Furthermore, the two spiral chambers nested one inside the other are delimited in a sealed manner, in the opposite front faces of the exchanger, by connecting together, two by two, the longitudinal edges of the turns, and this by welding.
  • Document FR-A 2 515 328 also describes a heat exchanger with a spiral body being produced by the winding on itself, one inside the other and which are delimited by a single sheet passing diametrically through each flange end. This sheet is wound in a spiral on mandrels driven in rotation.
  • a first section of the sheet, coming from one end of the diameter of the flanges and from one side of the mandrels, is smooth and a second section, coming from the opposite end, is also smooth.
  • One of the spiral chambers is delimited between a turn of the second section of sheet metal and the turn of the first section of sheet metal located outside relative to the previous one, while the other spiral chamber is bounded by this turn of the second section of sheet metal and the turn of the first section of sheet metal located inside with respect to the previous one.
  • patent GB-A 2 122 785 describes a heat exchanger produced by spiral winding of a single sheet, the second section of which carries welded spacers.
  • patent FR-A 788 644 describes a heat exchanger in which a U-shaped profile open towards the outside is wound in a spiral between the pairs of longitudinal marginal parts of the two sections of sheet metal and is welded by its wings, so that the lateral closure of the spiral chambers is ensured.
  • the present invention aims to remedy the aforementioned drawbacks by providing a spiral heat exchanger of particularly simple design, easy to manufacture and of a relatively low cost price due to the saving in material produced.
  • the invention is characterized in that the second section of the sheet carries bosses ensuring the mutual spacing of the first and second sections of sheet once they are wound together in a spiral, the longitudinal marginal portions of the second section of sheet carrying the bosses are deformed so as to be adjacent to the longitudinal marginal portions of the first section of sheet metal, a U-shaped profile open towards the outside is wound in a spiral between the pairs of longitudinal marginal portions of the first and second sections of sheet metal so that the two extreme wings of this profile are respectively adjacent to two parts of longitudinal marginal parts of the first and second sheet metal sections and this U-shaped profile is welded by its wings to these longitudinal marginal parts, so that the lateral closure of one of the chambers spiraling is provided by the adjacent longitudinal welded edges of the first and second section of sheet metal and that the closure
  • the lateral profile of the other spiral chamber is provided by the U-shaped profile, the wings of which are welded to the edges of the two sections of sheet metal.
  • an additional sheet forming a jacket is welded near the end of one of the sections of sheet so as to be able to surround the last turn of the spiral body, this jacket being welded on itself to maintain the spiral body.
  • the method of manufacturing a spiral heat exchanger according to the preamble of claim 4 is characterized in that provision is made, on the second section (2b), for bosses (2c, 2d), it is allowed, during winding the first section of smooth sheet metal (2a) free while the second opposite section (2b) is subjected to a longitudinal tensile force, a U-shaped section (6), made of thin sheet metal, is engaged, open towards the exterior, subjected to a longitudinal tensile force, between each longitudinal marginal part of the second section of sheet metal (2b) and the corresponding marginal part of the first section of smooth sheet metal (2a), while being housed during winding, in each U-shaped section (6), a rod (7) made of flexible but incompressible material ensuring the maintenance of each section (6), which causes the adjacent marginal part of the second section of sheet metal (2b) to be crushed which is then deformed and comes into contact with the corresponding marginal part of the pre mier section of smooth sheet metal (2a), finally, after the completion of the spiral body, a piece
  • the exchanger according to the invention offers the advantage that it is very economical to manufacture because it is made from a single sheet wound in a spiral. Furthermore, due to the use, for the lateral closure of the spiral chambers, of a U-shaped profile, in the junction zones, the edges of the sheet metal sections are obtained, four adjacent sheet thicknesses namely the two marginal parts of the first and second sections of sheet metal and the two wings of two U-shaped sections arranged on either side of the two sections of sheet metal, so that it is possible to use sheets having a thickness very small, for example of the order of 0.03 mm.
  • the heat exchanger shown in Figures 1 to 3 comprises a spiral body 1 which is formed by the spiral winding of a single strip of sheet metal 2 ( Figures 4 and 6). This spiral winding is achieved by diametrically engaging the longitudinal edges of the sheet 2, between two pairs of mandrels 3 and 4 ( Figures 4 and 6) which can be rotated in the direction of the arrow f around a transverse axis common 5.
  • the two mandrels 3 and 4 of each pair are arranged symmetrically with respect to the axis of rotation 5 so as to delimit between them a diametrical slot in which the sheet 2 passes.
  • These mandrels 3 and 4 also have a surface device with a substantially spiral cross section or they still have the form of oil drops as indicated in detail in the aforementioned French patent application No. 81 20153.
  • the sheet metal strip 2 comprises a first smooth section 2a situated on the side of the winding mandrels 3, 4, in FIG. 4.
  • the second section 2b of the strip 2 which is located to the left of the mandrels 3, 4, has, on its upper surface and over the greater part of its length, bosses 2c intended to constitute spacers between the different turns.
  • the second section 2b also has, in its part close to the mandrels 3, 4, and corresponding to a development of the periphery of these mandrels over 180 ", bosses 2d on its lower surface.
  • the two pairs of opposite mandrels 3, 4 are rotated counterclockwise (arrow f), the strip 2 being placed flat as shown in the Figure 4.
  • the first strip section 2a which extends beyond the pairs of mandrels 3, 4, is left free while the second opposite section 2b is subjected, during winding, to a tensile force F which can be equal for example to 4,000 N.
  • F tensile force
  • the first lower bosses 2d are then turned towards the outside, while the following upper bosses 2c are turned towards the inside.
  • each longitudinal marginal part of the second sheet metal section 23b there is, before starting the winding, above each longitudinal marginal part of the second sheet metal section 23b, a U-shaped section 6, made of thin sheet metal, so that each of these sections 6 is welded, at its end 6a, to the upper face of the second section of sheet metal 2b, in the immediate vicinity of its longitudinal edge and in the area between the upper bosses 2c and the lower bosses 2d.
  • Each U-shaped section 6 is open to the outside and is subjected, during the winding operation, to a tensile force F1 which is also equal to 4,000 N for example.
  • the profile 6 forms a spiral spacer interposed between the longitudinal edges of the two sheet metal sections 2a and 2b and it ensures the closure of one of the chambers indicated by A in the figure. 3.
  • This chamber A is delimited between a turn of the second section of strip 2b and the turn of the first section of strip of smooth sheet metal 2a which is located outside.
  • the second chamber B is, for its part, delimited by the same turn of the second section of sheet metal strip 2b carrying the bosses 2c facing the winding axis and the turn of the first section of strip of smooth sheet metal lying inside and which is applied against and maintained by the bosses 2c.
  • a rod 7 is housed inside the U-shaped section 6 in flexible but incompressible material which maintains the profile 6 in its original shape during the entire spiral winding process, despite the tensile forces F and F1. Due to the incompressibility of the rod 7, the latter causes the adjacent marginal part of the sheet metal section 2b to be crushed, which is then deformed and comes into contact with the corresponding marginal part of the other smooth sheet metal section 2a.
  • This shirt 8 has a length slightly greater than the development of the spiral body once the latter formed. Consequently, when the last turn of the first section of smooth sheet 2a has been formed, we weld together the end of this first section 2a and the end portion of the second section of sheet metal 2b then the winding is completed by continuing to rotate the mandrels 3, 4 in the same direction of the arrow f, so as to completely wind the outer jacket 8 around the two sections 2a, 2b wound in a spiral and nested one inside the other. The outer jacket is then welded on itself, forming a weld bead 10 ( Figure 2).
  • the rods 7 housed in the lateral U-shaped profiles 6 are wound in a spiral.
  • the spiral body is separated from the winding mandrels 3, 4 and end flanges of the same shape, such as the flange 11 ( Figure 1), are placed in the openings left by the latter.
  • Each front face of the exchanger thus obtained is then immersed in a bath of molten tin.
  • perfectly sealed welds 11 are obtained, which join together four sheet thicknesses, namely the two adjacent edges of the two sheet metal sections 2a, 2b and the two wings of the two sections 6 located on the side. and other of each pair of its edges.
  • the exchanger according to the invention is practically entirely produced on the same machine which ensures spiral winding. Indeed the outer jacket 8 is put in place and assembled by welding, at the end of the spiral winding. This avoids having to use an additional cylindrical shell receiving the actual spiral body and there is thus a significant saving of labor during the manufacture of the exchanger.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Wire Processing (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (4)

1. Wärmetauscher mit einem spiralförmigen Körper, der zwei spiralförmige, wechselseitig ineinandergreifende Kammern (A, B) voneinander abgrenzt, die jewils von einem von zwei Strömungsmitteln durchflossen werden, zwischen denen der Wärmeaustausch stattfinden soll, wobei dieser Körper zwei äußere, quer angeordnete Endflansche (11) umfaßt, die beiden spiralförmigen Kammern A, B von einem einzigen Blech (2) abgegrenzt werden, das diametral jeden Endflansch (11) überquert, ein erster, von einem Ende des Durchmessers der Flansche (11) ausgehender Abschnitt (2a) des Bleches (2) glatt ist, während ein zweiter Abschnitt vom anderen Ende ausgeht, und wobei eine der spiralförmigen Kammern (A) zwischen einer Spirale des zweiten Blechabschnitts (2b) und der Spirale des ersten, außerhalb des vorhergehenden liegenden Blechabschnitts (2a) eingeschlossen ist, während die andere spiralförmige Kammer (B) von dieser Spirale des zweiten Blechabschnitts (2b) und der sich innerhalb des vorhergehenden befindenden Spirale des ersten Blechabschnitts (2a) begrenzt wird, dadurch gekennzeichnet, daß der zweite Abschnitt (2b) des Blechs (2) Vorsprünge (2c, 2d) trägt, die den beiderseitigen Abstand zwischen dem ersten und dem zweiten Blechabschnitt (2a, 2b) sicherstellen, wenn diese gemeinsam spiralförmig aufgewickelt werden, daß die in Längsrichtung verlaufenden Randbereiche des zweiten, mit den Vorsprüngen (2c, 2d) versehenen Blechabschnitts (2b) derart verformt sind, daß sie an den in Längsrichtung verlaufenden Randbereichen des ersten Blechabschnitts (2a) anliegen, daß ein nach außen offenes U-Profil (6) spiralförmig zwischen die paarweise angeordneten, in Längsrichtung verlaufenden Randbereiche des ersten und des zweiten Blechabschnitts (2a, 2b) derart eingewickelt ist, daß die beiden äußeren Schenkel dieses Profils (6) an jeweils einem der beiden Paare der in Längsrichtung verlaufenden Randbereiche des ersten und des zweiten Blechabschnitts (2a, 2b) anliegen und das U-Profil (6) mit seinen Schenkeln mit diesen in Längsrichtung verlaufenden Randbereichen verschweißt ist, derart, daß der seitliche Verschluß der einen der spiralförmigen Kammern (B) durch die aneinander anliegenden und miteinander verschweißten Längsränder des ersten und des zweiten Blechabschnitts (2a, 2b) sichergestellt wird und der seitliche Verschluß der anderen spiralförmigen Kammer (A) durch das U-Profil (6), dessen Schenkel mit den Rändern der beiden Blechabschnitte (2a, 2b) verschweißt sind.
2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß ein zusätzliches Blech (8) einen Mantel bildet und in der Nähe des Endes eines der Blechabschnitte (2b) derart verschweißt ist, daß es die letzte Windung des spiralförmigen Körpers umfassen kann, wobei dieser Mantel (8) mit sich selbst verschweißt ist, um den spiralförmigen Körper festzuhalten.
3. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der zweite Blechabschnitt (2b) in seinem Bereich, der nach dem Wickeln den Endflanschen benachbart ist und der einem Umfangsabschnitt dieser Flansche von 180° entspricht, Vorsprünge (2d) aufweist, die nach außen gekehrt sind, während er über den Rest seiner Oberfläche nach innen gewandte Vorsprünge (2c) aufweist.
4. Verfahren zur Herstellung eines spiralförmigen Wärmetauschers nach einem der vorhergehenden Ansprüche, bei welchem man ein Blechband (2) auf in Rotation versetzte Dorne (3, 4) spiralförmig aufwickelt und dieses Blechband zwischen diesen Dornen in Durchmesserrichtung eingespannt ist und auf der ersten Seite der Dorne (3, 4) einen ersten, glatten Abschnitt (2a) aufweist und auf der anderen Seite der Dorne (3, 4) einen zweiten Abschnitt (2b), dadurch gekennzeichnet, daß man auf dem zweiten Abschnitt (2b) Vorsprünge (2c, 2d) vorsieht, daß man während des Wickelns den ersten, glatten Blechabschnitt (2a) lose läßt, während man den zweiten, gegenüberliegenden Blechabschnitt (2b) einer in Längsrichtung wirkenden Zugkraft aussetzt, daß man während des Wickelns ein nach außen geöffnetes U-Profil (6) aus dünnem Blech, das einer in Längsrichtung wirkenden Zugkraft ausgesetzt ist, zwischen jeden in Längsrichtung verlaufenden Randbereich des zweiten Blechabschnitts (2b) und den entsprechenden Randbereich des ersten, glatten Blechabschnitts (2a) einfügt, daß man während des Wickelns in jedes U-Profil (6) einen Wulst aus weichem, aber inkompressiblen Material einsetzt, der sicherstellt, daß jedes Profil (6) während des gesamten Wickelvorgangs zur Bildung der Spirale seine ursprüngliche Form beibehält trotz der auf den zweiten Blechabschnitt (2b) und jedes Profil (6) ausgeübten Zugkräfte, die ein Pressen des benachbarten Randbereichs des zweiten Blechabschnitts (2b) zur Folge haben, der dann verformt wird und mit dem entsprechenden Randbereich des ersten Blechabschnitts (2a) in Kontakt kommt, daß man schließlich, nach der Fertigstellung des spiralförmigen Körpers ein mit dem zweiten Blechabschnitt (2b) verschweißtes Blechstück (8) darüberwickelt, um einen äußeren Mantel zu bilden, daß man diesen äußeren Mantel mit sich selbst verschweißt, daß man die in die spiralförmig gewickelten seitlichen U-Profile (6) eingebetteten Wülste (7) entfernt, daß man den spiralförmigen Körper von den Wickeldornen (3, 4) trennt und in die von diesen hinterlassenen Öffnungen Endflansche gleicher Form einsetzt und daß man jede Stirnseite des Wärmetauschers in ein Löt-oder Schweißbad eintaucht.
EP87400658A 1986-03-24 1987-03-24 Spiralwärmetauscher und Verfahren zu seiner Herstellung Expired EP0239490B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87400658T ATE46966T1 (de) 1986-03-24 1987-03-24 Spiralwaermetauscher und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604198A FR2596144B1 (fr) 1986-03-24 1986-03-24 Echangeur de chaleur spirale et son procede de fabrication
FR8604198 1986-03-24

Publications (2)

Publication Number Publication Date
EP0239490A1 EP0239490A1 (de) 1987-09-30
EP0239490B1 true EP0239490B1 (de) 1989-10-04

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EP87400658A Expired EP0239490B1 (de) 1986-03-24 1987-03-24 Spiralwärmetauscher und Verfahren zu seiner Herstellung

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EP (1) EP0239490B1 (de)
AT (1) ATE46966T1 (de)
DE (1) DE3760692D1 (de)
FR (1) FR2596144B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642153A1 (fr) * 1989-01-25 1990-07-27 Jouet Etienne Echangeur de chaleur a corps enroule en spirale et son procede de fabrication
US5274920A (en) * 1991-04-02 1994-01-04 Microunity Systems Engineering Method of fabricating a heat exchanger for solid-state electronic devices
WO2002063231A1 (en) * 2001-02-05 2002-08-15 Pursuit Dynamics Plc Spiral flow heat exchanger
US6585034B2 (en) 2001-02-21 2003-07-01 Rolls-Royce Plc Heat exchanger
US7534772B2 (en) 2000-06-22 2009-05-19 University Of Iowa Research Foundation Methods for enhancing antibody-induced cell lysis and treating cancer

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9402190A (nl) * 1994-12-22 1996-08-01 Helpman Intellectual Propertie Combinatie van ventilator, warmtewisselaar en behuizing.
AU1512899A (en) * 1998-10-02 2000-04-26 Erling Vage Heat exchanger construction, method and apparatus for producing same, and use ofthe heat exchanger
DE19913459C1 (de) * 1999-03-25 2000-08-03 Renzmann Und Gruenewald Gmbh Spiralwärmeaustauscher und Verfahren zu seiner Herstellung
FR2810726B1 (fr) * 2000-06-27 2004-05-28 Spirec Echangeur spirale multiecartement
GB0318838D0 (en) 2003-08-12 2003-09-10 Rolls Royce Plc A heat exchanger and a method of manufacturing a heat exchanger
NO2733266T3 (de) 2012-11-14 2018-07-28
DE102018210620A1 (de) 2018-06-28 2020-01-02 Siemens Aktiengesellschaft Schwimmkörper zum Tragen einer energetischen Anlage

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL40561C (de) * 1934-04-14
US2131265A (en) * 1937-03-01 1938-09-27 Dow Chemical Co Spiral heat interchanger and method of making same
FR835161A (fr) * 1937-03-12 1938-12-14 échangeur de température
FR2374979A1 (fr) * 1976-12-27 1978-07-21 Jouet Etienne Procede et dispositif pour l'enroulement en spirale d'au moins une bande
FR2515328A1 (fr) * 1981-10-27 1983-04-29 Jouet Etienne Echangeur de chaleur spirale et son procede de fabrication
GB2156961A (en) * 1984-04-05 1985-10-16 Apv Int Ltd Spiral heat exchanger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642153A1 (fr) * 1989-01-25 1990-07-27 Jouet Etienne Echangeur de chaleur a corps enroule en spirale et son procede de fabrication
EP0380419A1 (de) * 1989-01-25 1990-08-01 SPIREC, Société à Responsabilité Limitée Wärmeaustauscher mit spiralenförmig gewundenen Elementen und Verfahren zu seiner Herstellung
US5274920A (en) * 1991-04-02 1994-01-04 Microunity Systems Engineering Method of fabricating a heat exchanger for solid-state electronic devices
US7534772B2 (en) 2000-06-22 2009-05-19 University Of Iowa Research Foundation Methods for enhancing antibody-induced cell lysis and treating cancer
WO2002063231A1 (en) * 2001-02-05 2002-08-15 Pursuit Dynamics Plc Spiral flow heat exchanger
US6585034B2 (en) 2001-02-21 2003-07-01 Rolls-Royce Plc Heat exchanger

Also Published As

Publication number Publication date
FR2596144B1 (fr) 1988-05-27
EP0239490A1 (de) 1987-09-30
FR2596144A1 (fr) 1987-09-25
DE3760692D1 (en) 1989-11-09
ATE46966T1 (de) 1989-10-15

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