WO2012041287A2 - Plate heat exchanger having a fully welded plate pack - Google Patents

Plate heat exchanger having a fully welded plate pack Download PDF

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Publication number
WO2012041287A2
WO2012041287A2 PCT/DE2011/001774 DE2011001774W WO2012041287A2 WO 2012041287 A2 WO2012041287 A2 WO 2012041287A2 DE 2011001774 W DE2011001774 W DE 2011001774W WO 2012041287 A2 WO2012041287 A2 WO 2012041287A2
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
plate
components
interface
plate heat
Prior art date
Application number
PCT/DE2011/001774
Other languages
German (de)
French (fr)
Other versions
WO2012041287A3 (en
Inventor
Andree Peckmann
Peter Thomsen
Hendrik Surmund
Bernd De Vries
Original Assignee
Gea Ecoflex 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.)
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Application filed by Gea Ecoflex Gmbh filed Critical Gea Ecoflex Gmbh
Publication of WO2012041287A2 publication Critical patent/WO2012041287A2/en
Publication of WO2012041287A3 publication Critical patent/WO2012041287A3/en

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Classifications

    • 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
    • F28D9/0031—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 for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—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 for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00—Sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means
    • 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
    • F28F2275/06—Fastening; Joining by welding
    • 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
    • F28F2275/20—Fastening; Joining with threaded elements

Definitions

  • the present invention relates to a plate heat exchanger with a fully welded plate package according to the preamble of claim 1.
  • FIG. 1 of the accompanying drawings shows a generic plate heat exchanger 1 in an exploded view.
  • This plate heat exchanger 1 has a fully welded Piattenzig 2, which is umhaust with mounted Platten Homelandta uscher 1 of a closed frame.
  • This frame consists of four columns 3, a top plate 4, a bottom plate 5 and four side plates 6. At least two of the side plates 6 have inlet connection 7 and outlet connection 8 for the media to be treated.
  • the side plates 6 have in their edge areas through holes, which are penetrated by clamping bolt 9. These clamping bolts 9 are used for screwing the side plates 6 with the top plate 4, the bottom plate 5 and the columns 3. These are equipped with threaded holes 0 and through holes 11.
  • a circumferential seal 12 is arranged, which ensures that the housing is media-tight.
  • FIG. 2 shows a section through a screw connection between a side plate 6 and a column 3 according to the prior art shown in FIG. 1. From Fig. 2 it can be seen that after assembly between the side plates 6 and the columns 3, a gap 13 remains. Such a gap 13 is also present between the side plates 6 and the top plate 4 and the bottom plate 5. As a result, the main force connection between the connected components extends only via the seal 12.
  • This embodiment has some disadvantages. Thus, it is possible that the screw due to settling processes in the seal 12 dissolves, with which leaks of the plate heat exchanger 1 are connected. Furthermore, the seal 12 can even be destroyed during assembly or the seal 12 is not uniformly loaded flat. Other disadvantages of this prior art can be seen in the fact that marginal moments in the top plate 4 or Torsionsmomente be introduced into the columns 3 by the screw, which can lead to bending of these components.
  • Object of the present invention is therefore to provide a generic plate heat exchanger available, which no longer has the disadvantages of the prior art described above.
  • the at least one further interface is arranged in an advantageous embodiment of the invention on the outside of the screw, ie between the edges of the components to be connected and the screw. But it can also be arranged between the first interface forming seal and the screw or on both sides of the screw, or extend from the inside to the outside, in which case it has perforations for inserting the clamping bolt in the region of the screw.
  • the second interface does not have to circulate continuously, but may also consist of spaced-apart sections.
  • the at least one further interface is designed as metal-metal contact between the components to be connected, d. h.
  • the components to be connected are made so that they are in direct contact with each other during assembly of the screw.
  • the system's main power connection no longer passes through a gasket but directly over the respective components. Due to this design, the seal is biased and not destroyed by the assembly or possibly necessary tightening the clamping bolt. Furthermore, higher preload forces of the screw can be realized.
  • the at least one further interface is designed as a separate support element arranged between the components to be connected.
  • this support element has no sealing function, but it absorbs a large part of the frictional connection between the components to be connected and thus relieves the seal on the inside of the screw connections. Due to this solution, a bending of the top plate is also prevented, resulting in a uniform surface loading of the seal on the inside of the
  • FIG. 3 shows a section through a screw connection according to a first embodiment of the invention
  • FIG. 4 shows a section through a screw connection according to a second embodiment of the present invention, a section through a support element used in the second embodiment of the invention, and Fig. 6 shows a section through another, differently designed support element.
  • the components to be connected ie the side plates 6, the bottom plate 5, the top plate 4 and the pillars 3, are manufactured in such a way that there is no gap between them after assembly on the outside of the screw connections is, but that they are in direct surface contact 17, 19 to each other, wherein the seal 12 is biased defined on the inside of the screw. The force conclusion then no longer runs over the
  • a support element 14 of which embodiments in FIGS. 5 and 6 are shown, is used as the second interface on the outside of the screw connections.
  • These support elements 14 have a metal core 15 which is partially enveloped by a soft material 16 which is softer in strength than metal and compressible and serves as a tolerance compensator. This may be graphite or other suitable soft material 16, z. As PTFE act.
  • the soft material 16 is embedded in the metal core 15, but dominates its exposed area. As a result, a sufficiently strong layer of soft material 16 and thus a sufficient restoring force of the soft material 16 are provided and at the same time ensured that the components to be connected of the plate heat exchanger 1 come into contact with the exposed area of the metal core 15 during assembly.
  • a partially or fully coated metal core can be used as a second interface and a spacer made of metal or other suitable material.

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  • 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)

Abstract

The invention relates to a plate heat exchanger having a fully welded plate pack, which is enclosed by a closed frame, comprising four columns (3), a head plate (4), a base plate (5), and four side plates (6), wherein the side plates (6) are screwed perimetrically to the base plate (5), the head plate (4), and the associated columns (3), and a seal (12) is arranged on the inside of said screw connections between the components to be connected as a first perimetric interface. The aim of the invention is to provide such a plate heat exchanger, wherein leakages due to setting processes in the seal and destruction of the seal during the assembly are avoided. Said aim is achieved in that at least one further, partially or completely perimetric interface (14, 17, 19) is arranged between the components to be connected, wherein said interface at least partially assumes the force closure between the components to be connected.

Description

Plattenwärmetauscher mit einem vollverschweißten Plattenpaket  Plate heat exchanger with a fully welded plate package
Die vorliegende Erfindung betrifft einen Plattenwärmetauscher mit einem vollverschweißten Plattenpaket gemäß dem Oberbegriff des Anspruchs 1. The present invention relates to a plate heat exchanger with a fully welded plate package according to the preamble of claim 1.
Fig. 1 der angehängten Zeichnung zeigt einen gattungsgemäßen Plattenwärmetauscher 1 in einer Explosionsdarstellung. Dieser Plattenwärmetauscher 1 besitzt ein vollverschweißtes Piattenpaket 2, welches bei montiertem Plattenwärmeta uscher 1 von einem geschlossenen Rahmen umhaust ist. Dieser Rahmen besteht aus vier Säulen 3, einer Kopfplatte 4, einer Bodenplatte 5 sowie aus vier Seitenplatten 6. Mindestens zwei der Seitenplatten 6 weisen Einlaufstutzen 7 bzw. Auslaufstutzen 8 für die zu behandelnden Medien auf. Die Seitenplatten 6 weisen in ihren Randbereichen Durchgangsbohrungen auf, die von Spannbolzen 9 durchragt sind. Diese Spannbolzen 9 dienen der Verschraubung der Seitenplatten 6 mit der Kopfplatte 4, der Bodenplatte 5 sowie den Säulen 3. Diese sind dazu mit Gewindebohrungen 0 bzw. Durchgangsbohrungen 11 ausgestattet. Fig. 1 of the accompanying drawings shows a generic plate heat exchanger 1 in an exploded view. This plate heat exchanger 1 has a fully welded Piattenpaket 2, which is umhaust with mounted Plattenwärmeta uscher 1 of a closed frame. This frame consists of four columns 3, a top plate 4, a bottom plate 5 and four side plates 6. At least two of the side plates 6 have inlet connection 7 and outlet connection 8 for the media to be treated. The side plates 6 have in their edge areas through holes, which are penetrated by clamping bolt 9. These clamping bolts 9 are used for screwing the side plates 6 with the top plate 4, the bottom plate 5 and the columns 3. These are equipped with threaded holes 0 and through holes 11.
In den Eckbereichen des Plattenpakets 2 sind Führungen 18 angeschweißt, die die Säulen 3 so aufnehmen, dass diese bei montiertem Plattenwärmetauscher 1 nicht mit den zu behandelnden Medien in Berührung kommen können. In the corner regions of the plate pack 2 guides 18 are welded, which receive the columns 3 so that they can not come into contact with the media to be treated with mounted plate heat exchanger 1.
Bestätigungskopiel Auf der Innenseite der Schraubverbindungen ist zwischen den Seitenplatten 6, der Kopfplatte 4, der Bodenplatte 5 und den Säulen 3 eine umlaufende Dichtung 12 angeordnet, die dafür sorgt, dass die Umhausung mediendicht ist. Bestätigungskopiel On the inside of the screw connections between the side plates 6, the top plate 4, the bottom plate 5 and the columns 3, a circumferential seal 12 is arranged, which ensures that the housing is media-tight.
Fig 2 zeigt einen Schnitt durch eine Schraubverbindung zwischen einer Seitenplatte 6 und einer Säule 3 gemäß dem in Fig. 1 dargestellten Stand der Technik. Aus Fig. 2 ist ersichtlich, dass nach der Montage zwischen den Seitenplatten 6 und den Säulen 3 ein Spalt 13 verbleibt. Ein derartiger Spalt 13 ist auch zwischen den Seitenplatten 6 und der Kopfplatte 4 sowie der Bodenplatte 5 vorhanden. Dadurch verläuft der Krafthauptschluss zwischen den verbundenen Bauteilen nur über die Dichtung 12. Diese Ausführung hat einige Nachteile. So ist es möglich, dass sich die Schraubverbindung aufgrund von Setzvorgängen in der Dichtung 12 löst, womit Leckagen des Plattenwärmetauschers 1 verbunden sind. Des Weiteren kann die Dichtung 12 bei der Montage sogar zerstört werden bzw. die Dichtung 12 wird nicht gleichmäßig flächig belastet. Weitere Nachteile dieses Standes der Technik sind darin zu sehen, dass durch die Verschraubung Randmomente in die Kopfplatte 4 bzw. Torsionsmomente in die Säulen 3 eingebracht werden, was zu Verbiegungen dieser Bauteile führen kann. 2 shows a section through a screw connection between a side plate 6 and a column 3 according to the prior art shown in FIG. 1. From Fig. 2 it can be seen that after assembly between the side plates 6 and the columns 3, a gap 13 remains. Such a gap 13 is also present between the side plates 6 and the top plate 4 and the bottom plate 5. As a result, the main force connection between the connected components extends only via the seal 12. This embodiment has some disadvantages. Thus, it is possible that the screw due to settling processes in the seal 12 dissolves, with which leaks of the plate heat exchanger 1 are connected. Furthermore, the seal 12 can even be destroyed during assembly or the seal 12 is not uniformly loaded flat. Other disadvantages of this prior art can be seen in the fact that marginal moments in the top plate 4 or Torsionsmomente be introduced into the columns 3 by the screw, which can lead to bending of these components.
Aufgabe der vorliegenden Erfindung ist es daher, einen gattungsgemäßen Plattenwärmetauscher zur Verfügung zu steilen, der die oben beschriebenen Nachteile des Standes der Technik nicht mehr aufweist. Object of the present invention is therefore to provide a generic plate heat exchanger available, which no longer has the disadvantages of the prior art described above.
Diese Aufgabe wird erfindungsgemäß mit einem Plattenwärmetauscher gelöst, der die Merkmale des Anspruchs 1 aufweist. This object is achieved with a plate heat exchanger having the features of claim 1.
Erfindungsgemäß wird also zusätzlich zu der auf der Innenseite der Schraubverbindungen angeordneten Dichtung, die eine erste umlaufende Schnittstelle zwischen den zu verbindenden Bauteilen darstellt, zumindest eine weitere, teilweise oder ganz umlaufende Schnittstelle zwischen den zu verbindenden Bauteilen vorgesehen, die den Kraftschluss zwischen den zu verbindenden Bauteilen zumindest teilweise aufnimmt. Dadurch werden die oben beschriebenen Nachteile abgestellt oder aber stark gemindert. Die zumindest eine weitere Schnittstelle ist in vorteilhafter Ausgestaltung der Erfindung auf der Außenseite der Schraubverbindungen, also zwischen den Rändern der zu verbindenden Bauteile und den Schraubverbindungen, angeordnet. Sie kann aber auch zwischen der die erste Schnittstelle bildenden Dichtung und den Schraubverbindungen oder auf beiden Seiten der Schraubverbindungen angeordnet sein, oder sich von der Innenseite auf die Außenseite erstrecken, wobei sie dann im Bereich der Schraubverbindungen Lochungen zum Durchstecken der Spannbolzen aufweist. Des Weiteren muss die zweite Schnittstelle nicht ununterbrochen umlaufen, sondern sie kann auch aus voneinander beabstandeten Abschnitten bestehen. According to the invention, therefore, in addition to the arranged on the inside of the screw gasket, which represents a first circumferential interface between the components to be connected, at least one further, partially or completely circumferential interface between the connecting components provided which at least partially absorbs the frictional connection between the components to be joined. As a result, the disadvantages described above are turned off or greatly reduced. The at least one further interface is arranged in an advantageous embodiment of the invention on the outside of the screw, ie between the edges of the components to be connected and the screw. But it can also be arranged between the first interface forming seal and the screw or on both sides of the screw, or extend from the inside to the outside, in which case it has perforations for inserting the clamping bolt in the region of the screw. Furthermore, the second interface does not have to circulate continuously, but may also consist of spaced-apart sections.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist die zumindest eine weitere Schnittstelle als Metall- etall-Kontakt zwischen den zu verbindenden Bauteilen ausgeführt, d. h., die zu verbindenden Bauteile sind so gefertigt, dass diese bei der Montage der Schraubverbindungen in direktem flächigen Kontakt zueinander stehen. Das führt dazu, dass der Krafthaupt- schluss des Systems nicht mehr über eine Dichtung verläuft, sondern direkt über die jeweiligen Bauteile. Aufgrund dieser Ausbildung wird die Dichtung vorgespannt und durch die Montage oder ggf. nötiges Nachziehen der Spannbolzen nicht zerstört. Des Weiteren können höhere Vorspannkräfte der Schraubverbindungen realisiert werden. In a further advantageous embodiment of the invention, the at least one further interface is designed as metal-metal contact between the components to be connected, d. h., The components to be connected are made so that they are in direct contact with each other during assembly of the screw. As a result, the system's main power connection no longer passes through a gasket but directly over the respective components. Due to this design, the seal is biased and not destroyed by the assembly or possibly necessary tightening the clamping bolt. Furthermore, higher preload forces of the screw can be realized.
Setzvorgänge der Dichtung beeinflussen die Schraubverbindungen bei ausreichender Schraubenvorspannung nicht mehr, so dass die Schraubverbindungen fest bleiben. Die so ausgewählte zweite Schnittstelle verhindert auch eine Biegung der Kopfplatte, da diese nicht mit einem Randmoment belastet wird. Insgesamt wird die Dichtung gleichmäßig belastet und das Ge- samtsystem des Plattenwärmetauschers wird durch Reibschluss zwischen den Komponenten besser fixiert. Setzvorgänge the seal no longer affect the screw with sufficient Schraubenvorspannung so that the screw remain fixed. The selected second interface also prevents bending of the top plate, as this is not burdened with a peripheral moment. Overall, the seal is evenly loaded and the The overall system of the plate heat exchanger is better fixed by friction between the components.
Nach einer weiteren Ausführungsform der vorliegenden Erfindung ist die zumindest eine weitere Schnittstelle als zwischen den zu verbindenden Bauteilen angeordnetes separates Stützelement ausgeführt. Dieses Stützelement hat im Gegensatz zu der die erste Schnittstelle bildenden Dichtung kei- ne Dichtfunktion, sondern es nimmt einen großen Teil des Kraftschlusses zwischen den zu verbindenden Bauteilen auf und entlastet somit die Dichtung auf der Innenseite der Schraubverbindungen. Aufgrund dieser Lösung wird ebenfalls eine Biegung der Kopfplatte verhindert, wodurch sich eine gleichmäßige flächige Belastung der Dichtung auf der Innenseite der According to a further embodiment of the present invention, the at least one further interface is designed as a separate support element arranged between the components to be connected. In contrast to the seal forming the first interface, this support element has no sealing function, but it absorbs a large part of the frictional connection between the components to be connected and thus relieves the seal on the inside of the screw connections. Due to this solution, a bending of the top plate is also prevented, resulting in a uniform surface loading of the seal on the inside of the
Schraubverbindungen sowie die anderen, oben genannten Vorteile ergeben. Screw connections and the other advantages mentioned above.
Weitere vorteilhafte Ausgestaltungen der vorliegenden Erfindung ergeben sich aus den übrigen Unteransprüchen. In der anhängenden Zeichnung zeigt neben den Fig. 1 und 2, die denFurther advantageous embodiments of the present invention will become apparent from the remaining dependent claims. In the accompanying drawing shows next to Figs. 1 and 2, the
Stand der Technik darstellen: State of the art represent:
Fig. 3 einen Schnitt durch eine Schraubverbindung gemäß einer ersten Ausführungsform der Erfindung, 3 shows a section through a screw connection according to a first embodiment of the invention,
Fig. 4 einen Schnitt durch eine Schraubverbindung gemäß einer zweiten Ausführungsform der vorliegenden Erfindung, einen Schnitt durch ein bei der zweiten Ausführungsform Erfindung verwendetes Stützelement, und Fig. 6 einen Schnitt durch ein weiteres, anders ausgeführtes Stützelement. 4 shows a section through a screw connection according to a second embodiment of the present invention, a section through a support element used in the second embodiment of the invention, and Fig. 6 shows a section through another, differently designed support element.
Bei dem in Fig. 3 gezeigten Ausführungsbeispiel sind die zu verbinden- den Bauteile, also die Seitenplatten 6, die Bodenplatte 5, die Kopfplatte 4 sowie die Säulen 3 so gefertigt, dass zwischen ihnen nach der Montage auf der Außenseite der Schraubverbindungen kein Spalt mehr vorhanden ist, sondern dass sie im direkten flächigen Kontakt 17, 19 zueinander stehen, wobei die Dichtung 12 auf der Innenseite der Schraubverbindungen definiert vorgespannt ist. Der Krafthauptschluss verläuft dann nicht mehr über dieIn the embodiment shown in FIG. 3, the components to be connected, ie the side plates 6, the bottom plate 5, the top plate 4 and the pillars 3, are manufactured in such a way that there is no gap between them after assembly on the outside of the screw connections is, but that they are in direct surface contact 17, 19 to each other, wherein the seal 12 is biased defined on the inside of the screw. The force conclusion then no longer runs over the
Dichtung 12, sondern über den Metall-Metall-Kontakt 17, 19 auf der Außenseite der Schraubverbindungen. Damit gehen die o. g. Vorteile einher. Seal 12, but via the metal-to-metal contact 17, 19 on the outside of the screw. This goes the o. G. Benefits associated with it.
In dem in Fig. 4 gezeigten Ausführungsbeispiel wird als zweite Schnitt- stelle auf der Außenseite der Schraubverbindungen ein Stützelement 14 eingesetzt, von dem Ausführungsformen in den Fig. 5 und 6 dargestellt sind. Diese Stützelemente 14 besitzen einen Metallkern 15, der teilweise von einem Weichstoffmaterial 16 umhüllt ist, welches von der Festigkeit her weicher als Metall und komprimierbar ist und als Toleranzkompensator dient. Dabei kann es sich um Graphit oder anderes geeignetes Weichstoffmaterial 16 , z. B. PTFE, handeln. Das Weichstoffmaterial 16 ist in den Metallkern 15 eingelassen, überragt aber dessen freiliegenden Bereich. Dadurch wird eine genügend starke Schicht an Weichstoffmaterial 16 und damit eine ausreichende Rückstellkraft des Weichstoffmaterials 16 zur Verfügung gestellt und gleichzeitig gesichert, dass die zu verbindenden Bauteile des Plattenwärmetauschers 1 bei der Montage in Metallkontakt mit dem freiliegenden Bereich des Metallkerns 15 kommen. In the exemplary embodiment shown in FIG. 4, a support element 14, of which embodiments in FIGS. 5 and 6 are shown, is used as the second interface on the outside of the screw connections. These support elements 14 have a metal core 15 which is partially enveloped by a soft material 16 which is softer in strength than metal and compressible and serves as a tolerance compensator. This may be graphite or other suitable soft material 16, z. As PTFE act. The soft material 16 is embedded in the metal core 15, but dominates its exposed area. As a result, a sufficiently strong layer of soft material 16 and thus a sufficient restoring force of the soft material 16 are provided and at the same time ensured that the components to be connected of the plate heat exchanger 1 come into contact with the exposed area of the metal core 15 during assembly.
Anstelle eines teil- oder vollummantelten Metallkerns kann als zweite Schnittstelle auch ein Abstandshalter aus Metall oder einem anderen geeigneten Material eingesetzt werden. Instead of a partially or fully coated metal core can be used as a second interface and a spacer made of metal or other suitable material.

Claims

Patentansprüche  claims
Plattenwärmetauscher mit einem voliverschweißten Plattenpaket, welches von einem geschlossenem Rahmen umhaust ist, bestehend aus vier Säulen (3), einer Kopfplatte (4), einer Bodenplatte (5) und vier Seitenplatten (6), wobei die Seitenplatten (6) umlaufend mit der Bodenplatte (5), der Kopfplatte (4) und den jeweils zugeordneten Säulen (3) verschraubt sind und auf der Innenseite dieser Schraubverbindungen eine Dichtung (12) als erste umlaufende Schnittstelle zwischen den zu verbindenden Bauteilen angeordnet ist, dadurch gekennzeichnet, dass zumindest eine weitere, teilweise oder ganz umlaufende Schnittstelle (14, 17, 19) zwischen den zu verbindenden Bauteilen angeordnet ist, die den Kraftschluss zwischen den zu verbindenden Bauteilen zumindest teilweise aufnimmt. A plate heat exchanger having a voluminously welded plate pack enclosed by a closed frame, comprising four columns (3), a top plate (4), a bottom plate (5) and four side plates (6), the side plates (6) surrounding the bottom plate (5), the top plate (4) and the respectively associated columns (3) are screwed and on the inside of these screw a seal (12) is arranged as the first circumferential interface between the components to be connected, characterized in that at least one further, partially or completely circumferential interface (14, 17, 19) is arranged between the components to be connected, which at least partially absorbs the frictional connection between the components to be joined.
Plattenwärmetauscher nach Anspruch 1 , dadurch gekennzeichnet, dass die zumindest eine weitere Schnittstelle (14, 17, 19) auf der Außenseite der Schraubverbindungen oder zwischen der die erste Schnittstelle bildenden Dichtung (12) und den Schraubverbindungen oder auf beiden Seiten der Schraubverbindungen angeordnet ist. Plate heat exchanger according to claim 1, characterized in that the at least one further interface (14, 17, 19) on the outside of the screw or between the first interface forming seal (12) and the screw connections or on both sides of the screw is arranged.
Plattenwärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zumindest eine weitere Schnittstelle als Metall-aufMetall-Kontakt (17, 19) zwischen den zu verbindenden Bauteilen ausgeführt ist. Plate heat exchanger according to claim 1 or 2, characterized in that the at least one further interface is designed as a metal-to-metal contact (17, 19) between the components to be joined.
Plattenwärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die zumindest eine weitere Schnittstelle als zwischen den zu verbindenden Bauteilen angeordnetes separates Stützelement (14) ausgeführt ist Plattenwärmetauscher nach Anspruch 4, dadurch gekennzeichnet, dass das Stützelement (14) ein Abstandhalter aus Metall oder einem anderen geeigneten Material ist. Plate heat exchanger according to claim 1 or 2, characterized in that the at least one further interface is designed as arranged between the components to be connected separate support member (14) Plate heat exchanger according to claim 4, characterized in that the support element (14) is a spacer made of metal or another suitable material.
Plattenwärmetauscher nach Anspruch 5, dadurch gekennzeichnet, dass der Abstandhalter einen Metallkern (15) besitzt, der teilweise oder vollständig mit einem Weichstoffmaterial (16) ummantelt ist.  Plate heat exchanger according to claim 5, characterized in that the spacer has a metal core (15) which is partially or completely sheathed with a soft material (16).
PCT/DE2011/001774 2010-09-29 2011-09-26 Plate heat exchanger having a fully welded plate pack WO2012041287A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010046864.9 2010-09-29
DE201010046864 DE102010046864A1 (en) 2010-09-29 2010-09-29 Plate heat exchanger with a fully welded plate package

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EP3418665A1 (en) * 2017-06-20 2018-12-26 Alfa Laval Corporate AB Plate heat exchanger
EP3418664B1 (en) * 2017-06-20 2020-01-15 Alfa Laval Corporate AB Plate heat exchanger

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EP3859260A1 (en) 2020-01-29 2021-08-04 Alfa Laval Vicarb SAS A plate heat exchanger
WO2021151895A1 (en) 2020-01-29 2021-08-05 Alfa Laval Vicarb Sas A plate heat exchanger

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