DK154987B

DK154987B - FILIE ARRANGEMENTS IN A PLATE HEAT EXCHANGE

Info

Publication number: DK154987B
Application number: DK506883A
Authority: DK
Inventors: Bertil Andersson; Leif Carlsson
Original assignee: Kvanum Platmekano
Priority date: 1982-03-26
Filing date: 1983-11-04
Publication date: 1989-01-16
Also published as: NO834345L; DK506883D0; IT8367286A0; DE3364114D1; IT1159376B; WO1983003464A1; EP0105283A1; IT8353057V0; DK506883A; FI75665B; FI75665C; FI834108A; FI834108A0; SE445390B; EP0105283B1; SE8201938L

Description

DK 154987 BDK 154987 B

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Den foreliggende opfindelse angår et foliearrangement i forbindelse med en pladevarmeveksler. En sådan varmeveksler har sædvanligvis form som en kubus, der er dannet af en rammekonstruktion. 1 kubussen er mellem hinanden anbragte folier tilvejebragt på en sådan måde, at hver-5 anden folie er plan, og den mellemliggende folie er korrugeret. De korrugerede folier, som ligger oven over hinanden, er anbragt således, at retningen for en folie afviger 90° fra retningen for den ovenfor og nedenunder beliggende folie. En sådan varmeveksler er beskrevet i fransk patentskrift nr. 2.346.661. Ved samling af en sådan pladevarme-10 veksler skal en plan folie først indføres, derefter indføres en korrugeret folie, denne efterfølges af en plan folie osv. Denne procedure er langsommelig og tidskrævende. Endvidere er det vanskeligt at sikre en tilfredsstillende tætning ved kanterne af en plan og en korrugeret folie, som er parallelle med strømningsretningen.The present invention relates to a film arrangement in connection with a plate heat exchanger. Such a heat exchanger usually takes the form of a cube formed by a frame structure. In the cube, films are provided between each other in such a way that each other film is flat and the intermediate film is corrugated. The corrugated sheets superposed on each other are arranged so that the direction of a film differs 90 ° from the direction of the film located above and below. Such a heat exchanger is described in French Patent No. 2,346,661. When assembling such a plate heat exchanger, a flat foil must first be introduced, then a corrugated foil introduced, followed by a flat foil, etc. This procedure is slow and time consuming. Furthermore, it is difficult to ensure a satisfactory seal at the edges of a plane and a corrugated foil which are parallel to the flow direction.

15 I tysk patentskrift DE-B-1.025.821 er der beskrevet en anden type varmeveksler, som består af et arrangement med kanaler, som er anbragt i et og samme plan. I dette arrangement udgør en korrugeret folie den mellemliggende del af en sammenhængende enhed, og to plane folier dan-20 ner enhedens sidedele, som er anbragt på hver side af den mellemliggende del, hvilke sidedele er udformet for at blive foldet, for således at danne en overside og en underside set i forhold til den mellemliggende del. Imidlertid er denne enhed ikke beregnet til stabling.German patent specification DE-B-1,025,821 discloses another type of heat exchanger, which consists of an arrangement of ducts arranged in one and the same plane. In this arrangement, a corrugated foil forms the intermediate portion of a continuous unit, and two planar foils form the side portions of the unit disposed on each side of the intermediate portion, which side portions are designed to be folded so as to form an upper side and a lower side as compared to the intermediate part. However, this unit is not intended for stacking.

25 Det er formålet med den foreliggende opfindelse, at overvinde ulemperne, der er omtalt i det foregående, hvilket sker ved at anvende en sammenhængende enhed af den type, som er angivet i krav l's kendetegnende del. Udgangsemnet består derved af en rektangulær folie, som har tre felter tilvejebragt efter hinanden, hvor det mellemste felt er 30 plant, og de to øvrige felter er korrugerede, eller hvor det mellemste felt ifølge ovennævnte udgøres af en korrugeret del og endefelterne af plane dele. Et emne af denne slags kan fremstilles maskinelt. Ved det således fremstillede emne ombøjes de korrugerede felter mod hinanden, således at sidstnævnte felters frie endekanter får kontakt med hinan-35 den og forbindes på en eller anden måde. De to korrugerede felter kan have forskellig længde eller identisk længde.The object of the present invention is to overcome the disadvantages mentioned above, which is done by using a coherent unit of the type as defined in the characterizing part of claim 1. The starting piece thus consists of a rectangular foil having three fields provided one after the other, where the middle field is 30 flat and the other two fields are corrugated, or where the middle field according to the above is made up of a corrugated part and the end fields of flat parts. An item of this kind can be machined. In the workpiece thus produced, the corrugated fields are bent towards each other so that the free end edges of the latter fields contact each other and are connected in some way. The two corrugated fields may have different lengths or identical lengths.

Kanter, der støder sammen, kan forbindes med hinanden på forskellige måder, for eksempel ved svejsning, limning, nitning eller lignende.Adjacent edges may be interconnected in various ways, for example, by welding, gluing, riveting or the like.

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DK 154987 BDK 154987 B

Kanter, der støder sammen i de i det foregående omtalte udførelsesformer, kunne ligeledes blot være modstående hinanden uden forbindelse og daΎ afstand fra hinanden eller i kontakt med hinanden. Anvendte folier udgøres fortrinsvis af aluminium. Ligeledes kan andre materialer 5 komme på tale, som for eksempel pap, plast og karton.Edges which abut in the above-mentioned embodiments could also simply be opposed to each other without connection and then distance from each other or in contact with each other. The foils used are preferably aluminum. Likewise, other materials 5 may come into play, such as cardboard, plastic and cardboard.

Den foreliggende opfindelse vil herefter blive beskrevet nærmere under henvisning til den medfølgende tegning, hvor 10 fig. 1 viser et emne til fremstilling af en enhed til en pladevarmeveksler, fig. 2 viser emnet i en ombøjningsfremgangsmåde, og fig. 3 viser en færdigformet enhed.The present invention will now be described in more detail with reference to the accompanying drawing, in which: FIG. 1 shows a blank for manufacturing a unit for a plate heat exchanger; FIG. 2 shows the workpiece in a bending method, and fig. 3 shows a finished unit.

15 Det i fig. 1 viste emne er tilvejebragt ved at føre et plastfoliebånd af samme bredde som et emne 1 gennem en maskine, som bevirker at båndet får efter hinanden følgende felter, hvor hvert andet felt 3 er plant, og hvor et forudgående og efterfølgende felt 2 og 4 er korrugeret. Emnet 1 adskilles fra båndet og føres til en maskine for ombøj-20 ning af emnets felter 2 og 4 på en sådan måde, som fremgår af fig. 2.15 The embodiment of FIG. 1 is provided by passing a plastic foil band of the same width as a blank 1 through a machine which causes the strip to have successive fields where every other field 3 is flat and where a previous and subsequent fields 2 and 4 are corrugated. The blank 1 is separated from the belt and fed to a machine for bending the blanks 2 and 4 of the blank in a manner as shown in FIG. 2nd

Når ombukningen er afsluttet, er endekanter 5 og 6 i kontakt med hinanden. Disse kanter forbindes med hinanden på en hvilken som helst kendt måde. I det foreliggende tilfælde antages det, at forbindelsen skal tilvejebringes ved svejsning eller limning. En færdig fremstillet en-25 hed er vist i fig. 3, hvor forbindelsen har fået henvisningsbetegnelsen 7. Man kan også afstå fra at forbinde kanterne 5 og 6 med hinap-den. Det er da hensigtsmæssigt, at kanterne 5 og 6 står overfor hinanden. Kanterne kan støde op til hinanden eller være beliggende med en indbyrdes afstand. Af fig. 3 fremgår det, at der kun kræves en sådan 30 enhed, som vist i figuren, når en pladevarmeveksler skal monteres, og således kræves kun et produkt, som hveranden gang lægges i én retning, og som derimellem bliver anbragt i en retning som er 90° i forhold til førstnævnte retning. Hver enhed er automatisk tætnet ved sine endekanter, som er parallelle med strømningsretningen.When the folding is completed, end edges 5 and 6 are in contact with each other. These edges are interconnected in any known manner. In the present case, it is assumed that the connection must be provided by welding or bonding. A finished unit is shown in FIG. 3, where the connection has been referred to as the reference 7. It is also possible to refrain from connecting the edges 5 and 6 with each other. It is then appropriate that the edges 5 and 6 face each other. The edges may be adjacent or spaced apart. In FIG. 3, it will be seen that only such a unit, as shown in the figure, is required when a plate heat exchanger is to be mounted, and thus only a product which is placed in one direction each time and which in between is placed in a direction which is 90 is required. ° in relation to the former direction. Each unit is automatically sealed at its end edges, which are parallel to the flow direction.

3535

Claims

1. Foil arrangement in a plate heat exchanger consisting of a plurality of superimposed foils, wherein each foil is planar and an intermediate foil is corrugated and wherein the corrugated foils are alternately directed in one direction and one direction 90 ° in conditions therein, characterized in that a flat film or a corrugated film forms an intermediate part (3) of a continuous unit, and that two corrugated films when the intermediate part (3) is flat or two flat foils, when the intermediate portion (3) is corrugated, the side portions (2 and 4) of the contiguous unit formed on each side of the intermediate portion (3), which side portions are intended to be folded and whose free ends (5) and 6) is intended to be joined by welding, gluing, riveting or the like, which unit 15 is designed so as to obtain two superposed sheets.

Foil arrangement according to claim 1, characterized in that the intermediate part (3) and the two parts (2 and 4) arranged on each side of the intermediate part (3) are made of a single blank 20 (2). -4).

Foil arrangement according to claim 1 or 2, characterized in that the gap between the free ends (5 and 6) arranged opposite each other, when not connected, varies from zero to upwards. 25 30 35