EP3640576B1 - Echangeur de chaleur avec plaque de transfert thermique et fixation de joint sur la plaque de transfert thermique - Google Patents

Echangeur de chaleur avec plaque de transfert thermique et fixation de joint sur la plaque de transfert thermique Download PDF

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Publication number
EP3640576B1
EP3640576B1 EP19199446.6A EP19199446A EP3640576B1 EP 3640576 B1 EP3640576 B1 EP 3640576B1 EP 19199446 A EP19199446 A EP 19199446A EP 3640576 B1 EP3640576 B1 EP 3640576B1
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EP
European Patent Office
Prior art keywords
heat transfer
gasket
transfer plate
click
tap
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.)
Active
Application number
EP19199446.6A
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German (de)
English (en)
Other versions
EP3640576A1 (fr
Inventor
Roman Satosek
Helge Nielsen
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.)
Danfoss AS
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Danfoss AS
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Publication date
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Publication of EP3640576A1 publication Critical patent/EP3640576A1/fr
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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
    • 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
    • F28D9/0043—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 plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—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 plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins

Definitions

  • heat exchangers formed of a plural of stacked heat transfer plates formed with two pairs of openings, and with gaskets positioned in gasket grooves to seal respectively the heat exchanging area from the externals, and from one set of the pair of openings.
  • the object of the present invention is to introduce a gasket and a gasket fixing method to ensure a correct and secure positioning, and further that could be used in existing standard heat transfer plates, that thus would not require modification that could affect the stability of the heat exchanger, the heat transfer plates and the gasket positioning.
  • a prior publication, US patent filing no. 20110259561 discloses a heat exchanger plate for a plate heat exchanger, where the heat exchanger plate includes a gasket groove extending in the edge region outside the regions and round the ports, whereby the gasket groove accommodates a gasket for sealing abutment against an adjacent heat exchanger plate in the plate heat exchanger where the gasket groove creates at least a recess of the heat transfer region along each side of the heat transfer region and that the recess enables a clip-on tab to be securely fastened to an edqe region of the heat exchanqer plate at the recess.
  • the click-on tap is positioned purely at an upper part of said main portion of the gasket, such as at the upper half, or the upper third, or the upper fourth.
  • said click-on tap comprise a first portion projecting from said main portion and being formed with a recess at its lower surface adapted to fit over a projection formed in the edge region, and a second portion adapted to reach out of outer edge region.
  • said projection is a wall section connecting two of the tops, said wall section further separating the gasket groove from the valley between said two tops.
  • Some heat transfer plates are with such wall sections which both induces rigidness of the heat transfer plate in edge region, but also forms a continuous outer wall section of the gasket groove against which the gasket can lean and forms a barrier against the gasket being pushed outwards. In the embodiment there thus is no requirement for modification in that the first portion simply extend over the wall section.
  • said second portion comprise a part reaching around and under the end face of the heat transfer plate.
  • the end face between two neighbouring tops is closed where the part further reaches up at the inner side of the closed end face (54) into the inside chamber (55) formed under the top (51).
  • said second portion comprise two parts reaching into the inside chambers of the two neighbouring tops of a valley, where said first portion is positioned within said valley.
  • a wall section is formed in said edge region connecting two of the tops, said wall section further separating the gasket groove from the valley between said two tops, wherein said method includes a step of positioning said first portion over said wall section.
  • said end face between two neighbouring tops is closed, and where the method further comprises a step of dragging the part under said end face to position said part at the inner side of the closed end face into the inside chamber formed under the top.
  • FIG. 1 is a sideview of a typical construction of a plate heat exchanger (1).
  • the plate heat exchanger (1) comprises a plurality of heat transfer plates (10) stacked on top of each other. Inlets and outlets (2, 3) is connected, and the stack of heat transfer plates (10) may be positioned between top (4) and bottom (5) plates.
  • Fig. 2 illustrates the heat transfer plates (10), which are formed with patterns (not shown in any of the figures) such that flow paths are formed between each set of neighbouring heat transfer plates (10) defining heat exchanging areas (11). Openings (20) and (21) are formed in the heat transfer plates (10) to connected to the inlets and outlets (2, 3)) for fluids to these flow paths. Gaskets (100) are positioned between the heat transfer plates (10) in gasket grooves (40) formed in the heat transfer plates (10).
  • the gasket (100) is arranged at an edge portion of the heat transfer plate (10) to seal the flow paths and at an area around the openings (20, 21) to seal pairs of the openings, such that only two of them (20) have flow access to the flow path formed at one side of the heat transfer plate, while the other two (21) are sealed therefrom.
  • the gasket (100) Enclosed by the gasket (100) is the heat exchanging area (11), where a hotter fluid in the flow paths at the one side of a heat transfer plate (10) to the colder fluid in the flow paths at the opposite side, these flow paths being sealed from each other.
  • pattern(s) (51, 52) are formed, such as corrugated pattern(s), comprising a pattern of tops (51) and valleys (52).
  • Fig. 3 illustrates a section of the gasket (100) with a main portion (102) positioned in the gasket groove (40), and further showing a section of an outer edge region (50) of the heat transfer plate (10).
  • the figure illustrates an embodiment of the present invention, where a click-on tap (101) extends from said main portion (102).
  • the click-on tap (101) comprise a first portion (103) projecting from said main portion (102) and positioned within a valley (52), and a second portion (104) adapted to reach out of outer edge region (50).
  • At least the valley (52) where the first portion (103) is positioned in the outer edge region (50) is formed a projection (53) projecting against the first portion (103) that thereby reaches from the main portion (102), over said projection (53) and continuing to the second portion (104).
  • part of the main portion (102) thus rests on the projection (53) and part on the bottom of the valley (52).
  • the projection (53) is a wall section connecting two of the tops (51), said wall section (53) further separating the gasket groove (40) from the valley (52) between said two tops (51).
  • This is a classic construction of heat transfer plates (10), where such a 'comb'-shaped outer edge region (50) is formed having an inner side being the outer surface of the gasket groove (40) and preventing the gasket from being pushed out due to the fluid pressures.
  • the present gasket (100) thus also could be used in such standard transfer plates (10) without having to modify them in any manner, or to make specially designed patterns in the outer edge region (50) for the positioning and attachment of click-on taps (101).
  • the second portion (104) comprising a part (106) reaching around and under the end face (12) of the heat transfer plate (10).
  • said second portion (104) comprise two parts (106) reaching into the inside chambers (55) of the two neighbouring tops (51) of a valley (52), said first portion (103) positioned within said valley (52).
  • a plural of such click-on taps (101) is position at some intervals through the whole circumference of the gasket (100), thus securing it to all sides of the heat transfer plate (10).
  • the second portion (104) is seen to comprise two parts (106) reaching into the inside chambers (55) formed under the two neighbouring tops (51) of a valley (52), said first portion (103) positioned within said valley (52).
  • Fig. 4 shows essentially the same as fig. 3, but in a different view and disclosing closed end faces (54) between two neighbouring tops (51), the end faces (56) between neighbouring valleys (52) still being open.
  • the parts (106) of the gaskets then further is shaped not only such that they are positioned in the chambers (55), but also reaches up at the inner side surface wall of the closed end face (54).
  • Fig. 5 shows a front view of a section of three heat transfer plates (10) stacked on top of each other, such that a valley (52) of an upper plate (10) connects to a top (51) of a lower plate etc.
  • the front view of the first portion (103) of the gasket (100) is seen protruding out of the opening of a valley (52), and the second portion (104) extending along the end faces (12) of the heat transfer plates (12) and having the parts (106) reaching into the back sides of the closed end faces (54) of the tops (51) and up along its inner surfaces.
  • the second portions (104) also have parts reaching up along the outer surface of the closed end faces (54). In both cases the parts (106) and (104) may be in contact with the closed end face (54) surfaces.
  • portions (106) to be secured against movement in the outwards direction relative to the inner surfaces of the closed end faces (54), they also may be secured against movement in the inwards direction by the outer surface of the closed end face (54) of the lower top (51) connected to the valley (52) where the first portion (103) is positioned.
  • Figs. 6A and 6B illustrates the side views of the sections A-A and B-B from fig. 5.
  • the wall (53) forming barrier between the valley (52) and the gasket groove (40) seen in the middle of the three heat transfer plates (10), this also shown with the gasket (100) having a click-on tap (101) first portion (103) positioned over the wall (53) and to the bottom of the valley (52) to the second portion (104) reaching out of the open end face (56).
  • the second portion (104) further contacts the outer surface of the closed end face (54) of the lower heat transfer plate (10), as also discussed previously.
  • Fig. 6B shows the position B-B of fig. 5 where part of the second portion (104) is seen and the portion (106) reaching into the chamber (55) up in contact with the inner surface of the closed end face (54).
  • the figures 4 and 6A also shows another feature of an embodiment, that the click-on tap (101) is positioned purely at an upper part of said main portion (102) of the gasket (100), such as at the upper half, or the upper third, or the upper fourth.
  • This enables the lower part of the main portion (102) to rest against the outer of the surfaces (41) of the gasket groove (40), whereas the upper positioned first portion (103) thus reaches over the surface (41) which also is a part of the projection (53), and over the projection (or wall) (53).
  • the closed end face (54) is formed by shaping the material forming the heat transfer plate (10).
  • Figs. 7A and 7B illustrate a further feature of the click-on tap (101), being an upper projection (107) on the first portion (103) which could apply to any of the previous embodiment.
  • the upper projection (107) then will reach into a projection formed in the upper connected heat transfer plate (10), which is not illustrated. This assists not only in fixing the gasket (100), but also by increasing the thickness of the first portion (103) making it more solid.
  • Fig. 8 is a side view of a cross section of three stacked heat transfer plates with the click-on tap of figs. 7A, B.
  • Fig. 9 illustrate a further embodiment, where the click-on tap (101) includes two (or even more) first portions (103) connected by one common second portion (104).
  • the respective two portions (103) of the figure will be positioned at each side of a top (51).
  • the first portions (103) are formed with recesses (105), but and in an alternative embodiment the one has a recess (105) whereas the other has not.
  • the gasket (100) includes a mix of click-on taps (101) according to the different embodiments, and the heat transfer plate (10) is formed accordingly. This e.g. includes that some are formed as in fig. 3, whereas one or more of the others are formed as in figs. 7A, 7B and 8.

Landscapes

  • 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)

Claims (6)

  1. Échangeur de chaleur (1), comprenant des plaques de transfert de chaleur (10) formées avec des motifs de telle sorte que des chemins d'écoulement soient formés entre chaque ensemble de plaques de transfert de chaleur voisines (10) définissant des zones d'échange de chaleur (11), et avec des ouvertures (20) et (21) pour former des entrées et des sorties, pour des fluides, sur les chemins d'écoulement, et une rainure à joint d'étanchéité (40) formée entourant ladite zone d'échange de chaleur (11), ladite plaque de transfert de chaleur (10) comprenant en outre un motif de sommets (51) et de creux (52) positionnés dans une région de bord extérieure (50) à la circonférence extérieure de la rainure à joint d'étanchéité (40), et dans lequel la face d'extrémité (12) entre deux sommets voisins (51) est fermée (54), et dans lequel ladite plaque de transfert de chaleur (10) reçoit un joint d'étanchéité (100) comprenant une portion principale (102) adaptée pour être positionnée dans une rainure à joint d'étanchéité (40) formée dans ladite plaque de transfert de chaleur (10), et où le joint d'étanchéité (100) comprend une pièce d'encliquetage (101) adaptée pour être positionnée au sein d'un creux (52), caractérisé en ce que ladite pièce d'encliquetage (101) comprend une première portion (103) faisant saillie à partir de ladite portion principale (102) et étant formée avec un évidement (105) sur sa surface inférieure adapté pour aller par-dessus une saillie (53) formée dans la région de bord (50), et une seconde portion (104) adaptée pour ressortir de la région de bord extérieure (50).
  2. Échangeur de chaleur (1) selon la revendication 1, dans lequel ladite pièce d'encliquetage (101) dudit joint d'étanchéité (100) est positionnée purement au niveau d'une partie supérieure de ladite portion principale (102) du joint d'étanchéité (100), par exemple à la moitié supérieure, ou au tiers supérieur, ou au quart supérieur.
  3. Échangeur de chaleur (1) selon la revendication 1, dans lequel ladite seconde portion (104) dudit joint d'étanchéité (100) comprend une partie (106) allant autour et en dessous de la face d'extrémité (12) de la plaque de transfert de chaleur (10).
  4. Échangeur de chaleur (1) selon la revendication 3, dans lequel la face d'extrémité (12) entre deux sommets voisins (51) est fermée (54), et où la partie (106) remonte en outre sur le côté intérieur de la face d'extrémité fermée (54) dans la chambre intérieure (55) formé en dessous du sommet (51).
  5. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel ladite pièce d'encliquetage (101) dudit joint d'étanchéité (100) est une saillie supérieure (107) sur la première portion (103) allant dans une saillie formée dans la plaque de transfert de chaleur raccordée supérieure (10).
  6. Échangeur de chaleur (1) selon l'une quelconque des revendications précédentes, dans lequel la pièce d'encliquetage (101) du joint d'étanchéité (100) inclut deux premières portions (103) raccordées par une seconde portion commune (104).
EP19199446.6A 2018-10-15 2019-09-25 Echangeur de chaleur avec plaque de transfert thermique et fixation de joint sur la plaque de transfert thermique Active EP3640576B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201800727A DK180140B1 (en) 2018-10-15 2018-10-15 Gasket click-on extending over projection

Publications (2)

Publication Number Publication Date
EP3640576A1 EP3640576A1 (fr) 2020-04-22
EP3640576B1 true EP3640576B1 (fr) 2021-12-29

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Application Number Title Priority Date Filing Date
EP19199446.6A Active EP3640576B1 (fr) 2018-10-15 2019-09-25 Echangeur de chaleur avec plaque de transfert thermique et fixation de joint sur la plaque de transfert thermique

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EP (1) EP3640576B1 (fr)
DK (1) DK180140B1 (fr)
RU (1) RU2718109C1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4001816A1 (fr) * 2020-11-23 2022-05-25 Alfa Laval Corporate AB Agencement de joint d'étanchéité, plaque de transfert de chaleur, kit et ensemble
CN114636331A (zh) * 2020-12-16 2022-06-17 丹佛斯有限公司 用于热交换器的衬垫单元插入件

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8303449L (sv) * 1983-06-16 1984-12-17 Alfa Laval Thermal Packningsarrangemang for plattvermevexlare
IT1239317B (it) * 1990-04-05 1993-10-19 Cipriani Scambiatori S R L Dispositivo formante guarnizione di tenuta per piastra di scambiatore di calore dotato di piastre aventi tale dispositivo.
KR100196779B1 (ko) * 1997-01-06 1999-06-15 이동환 판형 열교환기판의 가스켓 부착구조
DK174409B1 (da) * 1998-01-12 2003-02-17 Apv Heat Exchanger As Varmevekslerplade med forstærket kantudformning
IL125113A (en) * 1998-06-25 2001-08-26 Pessach Seidel Heat exchanger plates and sealing gaskets therefor
SE533359C2 (sv) * 2008-12-16 2010-09-07 Alfa Laval Corp Ab Platta och packning till en plattvärmeväxlare
DK177634B1 (en) * 2013-03-08 2014-01-13 Danfoss As Fixing gasket in plate type heat exchanger

Also Published As

Publication number Publication date
DK180140B1 (en) 2020-06-23
DK201800727A1 (en) 2020-06-16
EP3640576A1 (fr) 2020-04-22
RU2718109C1 (ru) 2020-03-30

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