EP1279916B1 - Echangeur de chaleur à plaques - Google Patents

Echangeur de chaleur à plaques Download PDF

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Publication number
EP1279916B1
EP1279916B1 EP20010118092 EP01118092A EP1279916B1 EP 1279916 B1 EP1279916 B1 EP 1279916B1 EP 20010118092 EP20010118092 EP 20010118092 EP 01118092 A EP01118092 A EP 01118092A EP 1279916 B1 EP1279916 B1 EP 1279916B1
Authority
EP
European Patent Office
Prior art keywords
plate
successive
individual
embossings
plates
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 - Lifetime
Application number
EP20010118092
Other languages
German (de)
English (en)
Other versions
EP1279916A1 (fr
Inventor
Heinz-Willi Rickers
Klaus Niepoth
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.)
Kelvion PHE GmbH
Original Assignee
Balcke Duerr Energietechnik 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.)
Filing date
Publication date
Application filed by Balcke Duerr Energietechnik GmbH filed Critical Balcke Duerr Energietechnik GmbH
Priority to ES01118092T priority Critical patent/ES2220635T3/es
Priority to EP20010118092 priority patent/EP1279916B1/fr
Priority to DK01118092T priority patent/DK1279916T3/da
Priority to DE50102418T priority patent/DE50102418D1/de
Publication of EP1279916A1 publication Critical patent/EP1279916A1/fr
Application granted granted Critical
Publication of EP1279916B1 publication Critical patent/EP1279916B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • 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

Definitions

  • the invention relates to a plate evaporator from individual plates, the trough-shaped and in several parallel rows evenly over the Distributed embossing plate surface are provided, the individual plates on their edges running transversely to the groove-shaped embossments Plate pairs and these plate pairs along the other, in Embossing edges of the individual plates with the respective next pair of plates are connected to a stack of plates, and wherein the Flow channels for one of the two involved in the evaporation process Medium wavy between each connected to a pair of plates Single plates, and for the other medium straight between successive pairs of plates are formed.
  • the invention is constructively based on one from DE 43 43 399 C2 known, composed of mutually parallel individual plates Plate heat exchanger.
  • Two individual plates form a plate pair with one in between, wavy channel for the one at the heat exchange involved medium.
  • - By joining the plate pairs into one Plate stacks result between the individual plates lying against each other adjacent plate pairs of tubular channels for the other on Medium involved in heat exchange.
  • tubular channels are based on the special embossing structure of the individual plates. These are provided with groove-shaped embossings, the Embossments of adjacent rows are offset from one another in the longitudinal direction.
  • the plate heat exchanger according to DE 43 43 399 is used for evaporation processes C2 can only be used to a limited extent. Those between the plates are problematic Tubular channels running adjacent pairs of plates. When using the Heat exchanger as an evaporator, the tubular channels tend to one Clogging, but at least to settling of solids or particles in the gaps delimiting the tubular channels. A cleaning of the Plate heat exchanger must therefore be chemical, mechanical Cleaning techniques fail. This is particularly disadvantageous when using the Heat exchanger in the processing of products of the food industry, with increased hygiene requirements.
  • the invention has for its object to provide a less prone to contamination and at the same time easier to clean plate evaporator.
  • Such a plate evaporator offers improved cleaning options Sides of the straight extending flow channels. These flow channels are not just tubular, they are complete, continuous levels, which means cleaning with mechanical Detergent is possible without narrowing, gaps, etc. uncleaned stay.
  • the plate evaporator can also be used for processes that require absolute sterility after cleaning, e.g. B. certain Applications in the food industry. In the milk processing industry z. B. can none when using the plate evaporator according to the invention Place pulp particles in constrictions or gaps. Form such pulp particles a constant source of infection in the processing of dairy products.
  • the two are one Plate pair of connected individual plates by spot welding to each other connected. This enables a high compressive strength to be achieved, so that the plate evaporator even in the case of a high differential pressure between the Pressing the two media can be used.
  • the spacers are part of a slotted plate, each slot being in Embossing direction extending, open edges of the two to a pair of plates connected individual plates gap-free, and the areas between successive slots form the spacers.
  • the width of the areas between successive slits of the slotted plate therefore causes the Distance of the plate pairs. In this way, this distance can be easily Adhere to means, installation errors when assembling the plate evaporator are avoided.
  • the gutter-shaped embossments have a rectangular shape in plan view that the Embossing adjacent rows by half the length of the individual embossing are offset in the longitudinal direction to each other, and that the locations of the Spot welding in the middle of the first single plate of the plate pair between two successive impressions of the same series, and in the second single plate of the plate pair on the continuous web between two successive rows of embossments are located.
  • the pressure behavior of the plate evaporator can also be Attach additional spot welds, the locations of these additional spot welds on the second single plate of the plate pair in the middle between two successive impressions of the same row, and at the first single plate of the plate pair on the continuous web between two successive rows of embossments are located.
  • FIG. 1 on the basis of a plate stack formed by five plate pairs P.
  • Plate heat exchanger shown consists of identical individual plates 1, 2 which are mirror images of each other to form a pair of plates P. This Connection takes place on the longitudinal edges 3 of the individual plates 1, 2 and welding spots 4.13 evenly distributed over the plates. Between each a plate pair P forming individual plates 1, 2 results in a wavy extending channel K1 for the one participating in the evaporation process Medium M1, namely a hot gas stream. This wavy course of the Channel K1 can be seen in particular in the sectional view in FIG. 2.
  • Figure 1 shows that the assembled from the individual plates 1 and 2 Plate pairs P to form the plate stack 5 on their transverse to the Longitudinal edges 3 extending edges 7 are connected to each other indirectly via a slotted plate 8.
  • the slotted plate 8 is parallel with several provided to each other, slit-shaped recesses 9, each Recess 9 receives the open edge 7 of a pair of plates P flush.
  • figure 1 also shows that the two individual plates 1 forming a pair of plates P. and 2 in the area of their edge 7 with a spread over the entire width of the plate extending widening 10 is provided so as to ensure a good inflow of To enable medium M1. This widening of the edge 7 fits almost flush into the respective slot-shaped recess 9 of the slot plate 8.
  • connection of the edges 7 with the respective recesses 9 of the Slotted plate 8 is made by welding along these edges.
  • the between the recesses 9 arranged parallel areas of the slotted plate 8 serve here as a spacer 10 and determine the distance between each Specify plate pair P and the subsequent plate pair P.
  • this spacer 10 of the slotted plate 8 the width of the flat flow channel K2 for the second medium M2, which in the straight flow direction between successive pairs of plates flows through.
  • Each individual plate 1, 2 is with several parallel rows in the direction of flow of the medium M2, channel-shaped embossments 12 are provided.
  • the Embossments 12 of adjacent rows are offset from one another in the longitudinal direction. This results in a pair of plates P between each other forming individual plates 1, 2 flat supports. Form these supports Support fields evenly distributed over the entire surface of the individual panels small size, so that even with a higher overpressure in the channels K2 achieved reliable support of the individual plates of a plate pair P. becomes. Even at high differential pressures there are no permanent deformations Fear single plates.
  • the embossments 12 have a length that is approximately twice to three times the width of the embossing. Overall, the embossments 12 form a top view a pattern similar to masonry. The embossments of neighboring rows are by half the length of the individual embossments in the longitudinal direction to one another added.
  • the connection of the two individual plates 1, 2 to a pair of plates P takes place except the welding along the longitudinal edges 3 additionally by the Spot welds 13.
  • Corresponding Spot welds are preferably reversed between successive embossings on the second single plate 2, and accordingly on the continuous web between two successive Rows of embossments of the first single plate 1.
  • the spot welds 13 ensure the stability of the Plate pairs P and in this way for a constant Flow cross-section of channels K2.

Claims (4)

  1. Evaporateur à plaques pour la transformation de produits selon des critères d'hygiène exigeants, comprenant des plaques individuelles (1, 2) munies d'empreintes (12) rainurées et disposées régulièrement en plusieurs rangées parallèles sur la surface de plaque, les plaques individuelles (1, 2), par leurs bords (3) s'étendant perpendiculairement aux empreintes rainurées, étant assemblées les unes aux autres pour former des paires de plaques (P), et ces paires de plaques, le long des respectivement autres bords (7) des plaques individuelles s'étendant dans le sens de l'empreinte, étant assemblées à la paire de plaques (P) respectivement suivante pour former une pile de plaques (5), et les canaux d'écoulement pour l'un (M1) des deux fluides participant au processus d'évaporation présentant une forme ondulée entre les plaques individuelles respectivement assemblées en une paire de plaques (P), et s'étendant pour l'autre fluide (M2) en ligne droite entre des paires de plaques (P) successives, des paires de plaques (P) successives dans le plan des canaux d'écoulement (K2) s'étendant en ligne droite étant séparées les unes des autres par un espace continu, et un écarteur (10) relie les bords (7) de deux paires de plaques (P) successives s'étendant en direction de l'empreinte, pour maintenir cet espace afin d'obtenir une possibilité améliorée de nettoyage des canaux d'écoulement (K2), et les deux plaques individuelles assemblées en une paire de plaques (P) sont reliées l'une à l'autre par des points de soudure (4) régulièrement répartis sur les plaques par des soudures à points (13).
  2. Evaporateur selon la revendication 1, caractérisé en ce que les écarteurs (10) font partie d'une plaque fendue (8), chaque fente recevant sans interstice les bords ouverts des deux plaques individuelles (1, 2) assemblées en une paire de plaques (P) s'étendant en direction de l'empreinte, et en ce que les zones entre des fentes successives forment les écarteurs (10).
  3. Evaporateur selon la revendication 1 ou 2, caractérisé en ce que les empreintes rainurées (12) présentent, en vue de dessus, une forme rectangulaire, en ce que les empreintes (12) de rangées voisines sont décalées les unes par rapport aux autres de la moitié de la longueur de chaque empreinte dans le sens longitudinal, et en ce que les endroits des soudures à points (13) se trouvent pour la première plaque individuelle (1) de la paire de plaques (P) au centre entre deux empreintes successives de la même rangée, et pour la deuxième plaque individuelle (2) de la paire de plaques (P) sur la nervure continue (14) entre deux rangées d'empreintes successives.
  4. Evaporateur selon la revendication 3, caractérisé par des soudures à points supplémentaires, les endroits de ces soudures à points supplémentaires se trouvant pour la deuxième plaque individuelle (2) de la paire de plaques (P) au centre entre deux empreintes successives d'une même rangée, et pour la première plaque individuelle (1) de la paire de plaques (P) sur la nervure continue (14) entre deux rangées d'empreintes successives.
EP20010118092 2001-07-26 2001-07-26 Echangeur de chaleur à plaques Expired - Lifetime EP1279916B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES01118092T ES2220635T3 (es) 2001-07-26 2001-07-26 Evaporador de placas.
EP20010118092 EP1279916B1 (fr) 2001-07-26 2001-07-26 Echangeur de chaleur à plaques
DK01118092T DK1279916T3 (da) 2001-07-26 2001-07-26 Pladefordamper
DE50102418T DE50102418D1 (de) 2001-07-26 2001-07-26 Plattenverdampfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20010118092 EP1279916B1 (fr) 2001-07-26 2001-07-26 Echangeur de chaleur à plaques

Publications (2)

Publication Number Publication Date
EP1279916A1 EP1279916A1 (fr) 2003-01-29
EP1279916B1 true EP1279916B1 (fr) 2004-05-26

Family

ID=8178136

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010118092 Expired - Lifetime EP1279916B1 (fr) 2001-07-26 2001-07-26 Echangeur de chaleur à plaques

Country Status (4)

Country Link
EP (1) EP1279916B1 (fr)
DE (1) DE50102418D1 (fr)
DK (1) DK1279916T3 (fr)
ES (1) ES2220635T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130048261A1 (en) * 2011-08-26 2013-02-28 Hs Marston Aerospace Ltd. Heat exhanger

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE318847B (fr) * 1966-08-22 1969-12-22 Rosenblads Patenter Ab
US3525391A (en) * 1969-01-21 1970-08-25 Waterdome Corp Heat exchanger and method of making same
DE2345721C2 (de) * 1973-09-11 1982-04-15 Arenco-Bmd Maschinenfabrik Gmbh, 7500 Karlsruhe Reinigungseinrichtung eines Kühlers für mit Feststoffen beladene Gase
EP0321667B1 (fr) * 1987-12-22 1992-03-25 Hans Dr. Viessmann Chaudière
DE4343399C2 (de) * 1993-12-18 1995-12-14 Balcke Duerr Ag Plattenwärmetauscher
DE19832164C2 (de) * 1998-07-17 2002-12-05 Balcke Duerr Gmbh Plattenwärmetauscher
DE19944426C2 (de) * 1999-09-16 2003-01-09 Balcke Duerr Energietech Gmbh Plattenwärmetauscher und Verdampfer

Also Published As

Publication number Publication date
DK1279916T3 (da) 2004-09-27
EP1279916A1 (fr) 2003-01-29
ES2220635T3 (es) 2004-12-16
DE50102418D1 (de) 2004-07-01

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