EP0864837A2 - Echangeur de chaleur à plaques - Google Patents

Echangeur de chaleur à plaques Download PDF

Info

Publication number
EP0864837A2
EP0864837A2 EP97119932A EP97119932A EP0864837A2 EP 0864837 A2 EP0864837 A2 EP 0864837A2 EP 97119932 A EP97119932 A EP 97119932A EP 97119932 A EP97119932 A EP 97119932A EP 0864837 A2 EP0864837 A2 EP 0864837A2
Authority
EP
European Patent Office
Prior art keywords
plate
seal
plates
heat exchanger
exchanger according
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.)
Granted
Application number
EP97119932A
Other languages
German (de)
English (en)
Other versions
EP0864837A3 (fr
EP0864837B1 (fr
Inventor
Johann Dipl.-Ing. Niemann
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.)
NIEMANN, JOHANN, DIPL.-ING.
Original Assignee
API Schmidt Bretten GmbH and Co KG
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 API Schmidt Bretten GmbH and Co KG filed Critical API Schmidt Bretten GmbH and Co KG
Publication of EP0864837A2 publication Critical patent/EP0864837A2/fr
Publication of EP0864837A3 publication Critical patent/EP0864837A3/fr
Application granted granted Critical
Publication of EP0864837B1 publication Critical patent/EP0864837B1/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
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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

  • the invention relates to a plate heat exchanger several preferably approximately rectangular heat transfer Plates with aligned inlet and outlet openings, wherein the plates are arranged in a stack are that flow spaces alternate between them with a first and a heat-exchanging, second medium can be loaded, the flow spaces and the inlet and outlet openings opposite the environment and the other medium are and with at least one on one side of the plate current flow space through seals in the bridge area opposite at least two openings of this plate is locked and the plates profiled in this way are that adjacent plates are at vertices touch their profile, at least one Seal in the bridge area is shaped so that its Thickness perpendicular to the plate plane according to the Profile contour of the plate gap alternately to and decreases.
  • Plate heat exchangers are found in a variety of Areas of application. There are usually four inputs or Outlet openings are provided per plate. Of which serves an opening to the first heat exchanging medium in one formed on one side of the plate Intake flow space, which is then used for heat exchange happens to come out at a second opening to exit the flow space.
  • the other two openings are on this side of the plate opposite the flow space sealed and serve only the passage of the second medium to the adjacent flow space. On these openings then function on the other side of the plate however, as an inlet or outlet opening for the second medium in a second flow space or out of this. This is essentially in the same area as the first flow space, however on the other side of the plate mentioned. Across from In this flow space, the Of course, openings serving for outlet opening not be sealed. The two work against it first mentioned openings on this side of the plate as passage openings for the first medium, so that seals between them and the second flow space must be located.
  • the area to be sealed between a passage opening used opening for the one medium on the one hand and the flow space for the other medium on the other hand is called the bridge area.
  • the bridge area At defective sealing of this area can do one thing Transfer medium into the other and this accordingly contaminate. Such a transition is absolutely too prevent because he is usually extremely uncomfortable and even has dangerous consequences. Man think here, for example, of the use of plate heat exchangers for pasteurization of food.
  • heat exchanger plates usually have a wave shape Profiling to create a turbulent flow to generate and stiffen the plate. Indeed are just the sealing grooves in which the Seals run, usually without profiling, so that the plate areas they traverse only have a low flexural strength. you can especially under the one-sided load in the bridge area and bend at the openings.
  • the profiling of the sealing grooves thus increases the bending strength of the sealing groove. Because of the clearly The sealing groove can have a smaller profile depth but never give the same stiffness as it the profile in the other panel areas. Because the profiling of the sealing groove because of its smaller Profile depth also no additional support points can create in the sealing area, basically the sealing groove is not the same or even one give greater bending stiffness than "normal" Plate profile is present.
  • the object of the present invention is now to Plate heat exchangers with regard to their sealing properties, especially in the bridge area, At the same time, operational reliability with strong Pressure and temperature fluctuations increased and thus that Range of use and functionality increased and the inexpensive structure should be maintained.
  • This object is achieved in that on the non-pressure side of the seal next to it a continuous support bar in both with the seal coming in plates is molded, this Support strip in the direction of the one to be sealed Plate gap protrudes and the seal is continuous against the excess pressure of the medium.
  • This support bar is usually about an elongated rib molded into the plate, the protrudes on one side of the plate and on the other represents a recess in the form of a hollow groove.
  • the support bar holds much more than the individual Narrowing of the profile contour the seal on your Space by placing them sideways across from the Supports pressure of the medium. Accordingly, the seal relatively narrow and therefore inexpensive as they don't rely on many constrictions needs.
  • the profiling below the seal you can get the profiling from the rest of the panel area let it continue; but it is also in the frame of the invention, here one in terms of direction and / or to provide the corrugation with other profiles. In in both cases it is appropriate that the profiling below the seal on both sides up to protrudes the top planes of the remaining profiling. As a result, the plates are supported over the entire Panel stacks also in the area of the bridge seal from, so that evasion of the thin heat exchanger plates is prevented in this area.
  • the support bar on the plate side assigned to the seal each up to about the apex level of the panel profiling protrudes. It then leans flat against the opposite support strip of the neighboring plate from and ensures the desired stiffening of the panels on the one hand and a complete lateral support of the Poetry on the other hand.
  • sealing of the bridge space is the essential Problem is and a sealing device of the described Form used here particularly preferably it is also within the scope of the invention such a sealing device in other places in the Plate heat exchangers, especially on the outer ones Insert plate edges or the openings.
  • a sealing device of the described Form used here particularly preferably it is also within the scope of the invention such a sealing device in other places in the Plate heat exchangers, especially on the outer ones Insert plate edges or the openings.
  • the sealing strength increases Points of greatest approximation of the plates to each other less than 1mm, especially less than about 0.2mm from.
  • the seal can be up to there be emaciated to a thin skin or whole omitted.
  • the low strength has been in practice as sufficient for the cohesion of the seal and as not a hindrance to the sealing effect of the rest Sealing areas proven.
  • the support strips so to the axis of rotation - about the longitudinal axis or to the transverse axis - the plate may be arranged that itself in the place of a support bar after rotation is another bar, but in the opposite Direction, i.e. in the same space between the plates protrudes. Then the support strips come closer Plates back to back after rotation to lie.
  • the profiling of the plates at least partially asymmetrical with respect to the axis of rotation be formed, such as that the plate profiling to the bridge area up and down in different Directions. With identical, twisted, opposite plates results then a support at the intersection of these Profiling.
  • Another advantage of this invention is obtained when two plates are made to touch each other Support strips welded together, soldered or are glued. Then you can namely from the same plate type both completely with seals provided as well as welded plate heat exchangers as well as producing mixed forms. So you can get substantial Save costs for production tools and warehousing.
  • the plate stack can advantageously up to to touch adjacent panels, especially up to a continuous, linear or extensive contact their support strips are pressed together. This is because the significantly reduced fatigue of the seal possible in the direction perpendicular to the plates that retensioning the stack of plates during operation makes redundant. This ensures that the heat exchanger during its entire operating time the calculated values for pressure loss and heat transfer adheres to and that an alternating deflection the plates avoided due to pressure fluctuations becomes.
  • FIG. 1 shows an essentially rectangular plate 1 a plate heat exchanger with inlet and outlet openings 2, 3 and a flow space 4, which is in front of the Plate extends.
  • the opening 2 serves as an input or Outlet opening for a first medium to the flow space 4 out, while the opening 3 as an inlet or outlet opening for a second medium to one on the back lying flow space acts. Between the Opening 3 and the flow chamber 4 is the so-called bridge area.
  • the flow space 4 has an undulating profile 5 coming from the edges V-shaped under an angle of approximately 22.5 ° to the short outer sides the plate converges in the middle and through Slashes is indicated.
  • the flow space 4 and those connected to it Opening 2 are through a circumferential seal 6, which is shown here as a dash-dotted line, sealed from the environment. Interrupts at the same time the seal 6 the connection between the flow space 4 and the opening 3.
  • the opening 3 is in turn from a circumferential, dash-dotted line Surround seal 7.
  • the profiling 5 in full Height also runs below the seals 6, 7 and is crossed by these, the strength of the seals according to the profile of the plate 1 and that an opposite plate increases and decreases.
  • the pressure-facing Side of the seals 6, 7 a blackened along the seals extending support bar 8 in the Plate is molded in the same direction as that Seal protrudes.
  • This support bar is in volume not filled in, but one pressed into the plate Tab, which is consequently on the back of the plate represents a deepening.
  • the seals 6, 7 by the in the flow chamber 4th or in the openings 2, 3 against excess pressure the support bar 8 pressed. This prevents evasion the seals 6, 7 and by the pressure there is an excellent sealing effect.
  • the So the sealing effect is not primarily a Compressing the seals between the plates, rather, it stems from the overpressure of the Media in the flow space 5 and in the openings 2, 3 forth.
  • the plate 1 has further support strips 9, 10 which emerge in the opposite direction of the support bar 8 and with corresponding support strips adjoining neighboring plate behind the drawing level correspond.
  • FIGS. 3 and 4 An alternative embodiment is shown in FIGS. 3 and 4 the heat exchanger plate shown.
  • the profiling 5 in the flow space 4 under one Angle of about 45 ° to the outside of the Plate. It is also V-shaped, so that it comes from the edges in the middle. Since the idea of the invention, however, only can be realized well if the plate profiling below the seal not in the longitudinal direction runs, is in this embodiment differently oriented, special profiling 5 'in the area of the bridge seals necessary.
  • the elastic Seals in shape and thickness exactly the contours adapted both of them engaged plates be.
  • the thermal transmission power required by him and to take advantage of the given for it allowable pressure loss is usually combined Plates with a "soft” and those with a “hard” press patterns with each other. That way you can Plate gaps arise, which of plates with the same or different press patterns are limited, namely hard-hard, hard-soft, soft-hard and soft-soft.
  • a special elastic Seal required, the manufacture of which in turn only requires a suitable mold.
  • FIG. 5 shows the principle of the sealing construction according to the invention clarifies.
  • the figure shows one enlarged perspective view of the left upper plate corner with opening 3 similar to Figure 3.
  • One recognizes the one adjoining the flow space 4 special profiling 5 'in the bridge area with which they crossing wave valleys 5a 'and the wave crests 5b '.
  • the wave valleys and wave crests run approximately in Direction of the transverse axis of the plate and cut the special profiling 5 'at an acute angle.
  • the medium in the flow chamber presses against the front face 6c of the seal 5 and presses so that their rear end 6d against the up to Crest plane of the wave crests 5b 'protruding support bar 8, so that between the seal 6 and the support strip 8th a continuously dense system is created.
  • the opening 3 can be seen in the upper part of the figure enclosing profile 5 with their troughs 5a and the wave crests 5b, which the sealing strip cross diagonally.
  • a section of the associated elastic Seal 7 drawn. She gets up from that its end face 7c acting pressure of the in the opening 3rd located medium with its other end face 7d firmly against the flank 8a of the constant height extending support bar 8 pressed.
  • the Seal 7 has the profiles of they enclosing plates wave troughs 7a and wave crests 7b. As already described for the bridge seal, here, too, support each other Plates in the area of the seal 7 Crossing points of their apex lines.
  • the sectional images of Figures 6-9 are said to Arrangement of the elastic seals on the Show sealing surfaces of the adjacent plates. For this the cut surfaces are placed so that the Seals in the places of their greatest extension cut across the panels. To represent a The seal with its associated sealing surfaces becomes the over her glowing plate along an upper one Vertex of their profiling and that below the Seal lying plate along one of its lower Cut apex lines.
  • the sectional images of the Figures 6-9 are in the longitudinal direction of the seals projected images the drawing plane like this cuts of a single plate or of Sections from plate packs.
  • Figure 6 shows a section through a plate with the arranged above her along a lower seal Vertical line of the plate approximately along the line VII-VII the figure 1.
  • the flank 10a of the support strip 10 forms at the same time a flank of the immediately adjacent one, to the top of the plate protruding support bar 8.
  • common side has the support bar 8 in turn on a plateau on which the flank 8a follows, on which the seal 7 is supported.
  • the crown plateau the support bar 8 is approximately on Section height of the profiling 5.
  • the condition of the plate heat exchanger is due to this Crest plateau on the support ledge of the neighboring slab.
  • the seal 7 is opposite the distance between the only slightly elevated on both plates. This results again from the fact that the sealing effect in the inventive construction less by pressure the plates on the seal 7 is caused, but by pressing the seal onto the support bar 8 due to the located in the opening 3, under Medium under pressure.
  • the closes Bridge area which here consists of the annular Seal 7, an associated support bar 8, one second support strip 8 and the associated seal 6 put together.
  • this critical area there is one Sealing according to the inventive concept is particularly recommended.
  • Figure 7 shows a section along the line VIII-VIII of Figure 1.
  • Support strips 9 for in the bridge area on the underside lying seals, not shown here, the Opening 2, the seal 6, which is attached to the support bar 8 creates, and the support bar 10, which in turn a not shown, on the underside of the plate running seal supports.
  • Figure 8 is the section of Figure 9 through others Tarpaulins and seals have been added. Now you see the seal 11, which is on the underside of the top or next but one plate on the flank of the Support bar 10 nestles. It should be noted that the apex level of the support bar 8 remains constant the level of the top plane of the panel profiling runs and consequently also that of the support strip 8 covered area of the seal 11 rotates without profiling. Therefore, the seal 11 has an extension 11 ' on, which is in the profiled area of the plate gap extends and therefore has a wave contour like seals 6 and 7 in FIGS. 5 and 6, respectively.
  • Figure 10 is an exploded view of a section from three plates with the associated seals one of the openings and in the bridge area. To get a simple outline, was assumed for this example, that the hole edge in the considered section and the bridge seal is straight and parallel to each other run. The figure is supposed to look out of the Show opening. Three superimposed are shown Plates with the seals 7 and 6 between the top two plates. For better understanding is an assignment of each other is also exemplary corresponding support points between the plates and Seals indicated by dash-dotted lines. Again you can see the wave valleys 5a and wave crests 5b recognize the profiling 5.
  • Figure 11 shows the plates from the perspective 10 exploded view without seals, taking these plates along different lines are cut.
  • the three plates in the picture on the left are (from top to bottom) once along an upper one Crest line, then along a lower crest line and then cut again along an upper apex line.
  • In the picture on the right is the top and the bottom Plate along a lower apex line and the middle plate cut along an upper apex line.
  • the arrows indicate the direction of view from right to left on the cut surfaces on.

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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)
EP97119932A 1997-03-11 1997-11-14 Echangeur de chaleur à plaques Expired - Lifetime EP0864837B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19709671 1997-03-11
DE19709671A DE19709671A1 (de) 1997-03-11 1997-03-11 Plattenwärmetauscher

Publications (3)

Publication Number Publication Date
EP0864837A2 true EP0864837A2 (fr) 1998-09-16
EP0864837A3 EP0864837A3 (fr) 1999-09-22
EP0864837B1 EP0864837B1 (fr) 2002-05-22

Family

ID=7822756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119932A Expired - Lifetime EP0864837B1 (fr) 1997-03-11 1997-11-14 Echangeur de chaleur à plaques

Country Status (2)

Country Link
EP (1) EP0864837B1 (fr)
DE (2) DE19709671A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006080874A1 (fr) * 2005-01-28 2006-08-03 Alfa Laval Corporate Ab Ensemble de joint d'etancheite statique pour echangeur thermique a plaques
FR2910607A1 (fr) * 2006-12-21 2008-06-27 Alfa Laval Vicard Soc Par Acti Echangeur thermique a plaques
EP3182048A1 (fr) * 2015-12-16 2017-06-21 Alfa Laval Corporate AB Joint de perforation, ensemble pour un échangeur de chaleur et échangeur de chaleur comportant un tel ensemble
US10006722B2 (en) 2015-10-29 2018-06-26 Dana Canada Corporation Structural support element in heat exchangers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001065C2 (de) * 2000-01-13 2002-11-21 Ballard Power Systems Plattenstapel-Wärmeübertrager, insbesondere zur Verwendung als Reformierungsreaktor
DE10153877A1 (de) 2001-11-02 2003-05-15 Behr Gmbh & Co Wärmeübertrager
DE10348803B4 (de) * 2003-10-21 2024-03-14 Modine Manufacturing Co. Gehäuseloser Plattenwärmetauscher
DE102005002063A1 (de) * 2005-01-14 2006-07-20 Behr Gmbh & Co. Kg Stapelscheiben -Wärmetauscher

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128726A (en) 1982-10-21 1984-05-02 Apv Co Ltd Heat exchanger plate

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB249184A (en) * 1925-06-23 1926-03-25 Harry Gibbs Improvements in steam condensing plant
DE1259849B (de) * 1964-06-24 1968-02-01 Holstein & Kappert Maschf Plattenapparat zur Durchfuehrung von Waermeaustausch- und Gasaustausch- oder anderen Verfahren
SE8106221L (sv) * 1981-10-21 1983-04-22 Reheat Ab Packningsspar hos plattelement for plattvermevexlare
GB8423271D0 (en) * 1984-09-14 1984-10-17 Apv Int Ltd Plate heat transfer apparatus
DE19540271C1 (de) * 1995-10-28 1996-11-07 Gea Ecoflex Gmbh Plattenwärmetauscher

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128726A (en) 1982-10-21 1984-05-02 Apv Co Ltd Heat exchanger plate

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006209162B2 (en) * 2005-01-28 2010-06-03 Alfa Laval Corporate Ab Gasket assembly for plate heat exchanger
CN101124450B (zh) * 2005-01-28 2011-11-16 阿尔法拉瓦尔股份有限公司 用于板式热交换器的垫片组件
WO2006080874A1 (fr) * 2005-01-28 2006-08-03 Alfa Laval Corporate Ab Ensemble de joint d'etancheite statique pour echangeur thermique a plaques
FR2910607A1 (fr) * 2006-12-21 2008-06-27 Alfa Laval Vicard Soc Par Acti Echangeur thermique a plaques
WO2008084174A2 (fr) * 2006-12-21 2008-07-17 Alfa Laval Vicarb Echangeur thermique a plaques
WO2008084174A3 (fr) * 2006-12-21 2008-11-13 Alfa Laval Vicarb Echangeur thermique a plaques
JP2010513839A (ja) * 2006-12-21 2010-04-30 アルファ・ラヴァル・ヴィカール プレートを備えた熱交換器
US8544529B2 (en) 2006-12-21 2013-10-01 Alfa Laval Viacarb Heat exchanger with plates
US10006722B2 (en) 2015-10-29 2018-06-26 Dana Canada Corporation Structural support element in heat exchangers
EP3182048A1 (fr) * 2015-12-16 2017-06-21 Alfa Laval Corporate AB Joint de perforation, ensemble pour un échangeur de chaleur et échangeur de chaleur comportant un tel ensemble
WO2017102410A1 (fr) * 2015-12-16 2017-06-22 Alfa Laval Corporate Ab Joint de perforation et ensemble pour échangeur de chaleur
CN108474631A (zh) * 2015-12-16 2018-08-31 阿法拉伐股份有限公司 端口孔垫圈和用于换热器的组件
US20190003783A1 (en) * 2015-12-16 2019-01-03 Alfa Laval Corporate Ab Porthole gasket and assembly for a heat exchanger
KR20200047776A (ko) * 2015-12-16 2020-05-07 알파 라발 코포레이트 에이비 열교환기용 포트홀 개스킷 및 조립체
US10871333B2 (en) 2015-12-16 2020-12-22 Alfa Laval Corporate Ab Porthole gasket and assembly for a heat exchanger
CN108474631B (zh) * 2015-12-16 2021-07-02 阿法拉伐股份有限公司 端口孔垫圈和用于换热器的组件

Also Published As

Publication number Publication date
DE19709671A1 (de) 1998-09-17
DE59707326D1 (de) 2002-06-27
EP0864837A3 (fr) 1999-09-22
EP0864837B1 (fr) 2002-05-22

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