SE528847C2 - Gasket assembly for plate heat exchanger - Google Patents
Gasket assembly for plate heat exchangerInfo
- Publication number
- SE528847C2 SE528847C2 SE0500216A SE0500216A SE528847C2 SE 528847 C2 SE528847 C2 SE 528847C2 SE 0500216 A SE0500216 A SE 0500216A SE 0500216 A SE0500216 A SE 0500216A SE 528847 C2 SE528847 C2 SE 528847C2
- Authority
- SE
- Sweden
- Prior art keywords
- gasket
- heat exchanger
- cassettes
- plate
- exchanger plates
- Prior art date
Links
- 239000011324 bead Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
Classifications
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- 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
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0098—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for viscous or semi-liquid materials, e.g. for processing sludge
-
- 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
- F28F2225/00—Reinforcing means
- F28F2225/04—Reinforcing means for conduits
-
- 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
- F28F3/042—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 in the form of local deformations of the element
- F28F3/046—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 in the form of local deformations of the element the deformations being linear, e.g. corrugations
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)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
25 30 528 847 som s k döda zoner där produkt kan fastna och därmed utgöra grogrund för bakterietillväxt ska undvikas. 25 30 528 847 as so-called dead zones where product can get stuck and thus form a breeding ground for bacterial growth must be avoided.
Med fördel används i detta sammanhang s k semisvetsade plattvärmeväxlare, d v s värmeväxlare innefattande ett antal Kassetter framställda genom parvis sammansvetsning av värmeväxlarplattor.Advantageously, so-called semi-welded plate heat exchangers are used in this context, i.e. heat exchangers comprising a number of cassettes manufactured by pairwise welding of heat exchanger plates.
Svetsfogen löper normalt längs kassetternas sidokanter och kring porthàlen. Mellan de respektive kassetterna åren packning anordnad som normalt är tillverkad av ett gummimaterial och anordnad i ett spår hos värmeväxlarplattan. lnuti kassetterna strömmar ett fluidum och mellan kassetterna ett annat fluidum. Semisvetsade plattvärmeväxlare tål jämförelsevis höga tryck och ger möjlighet till att öppna plattpaketet och rengöra utrymmena mellan paren av svetsade värmeväxlarplattor.The weld normally runs along the side edges of the cassettes and around the port hall. Between the respective cassettes are packings arranged which are normally made of a rubber material and arranged in a groove of the heat exchanger plate. Inside the cassettes a fluid flows and between the cassettes another fluid. Semi-welded plate heat exchangers can withstand comparatively high pressures and provide the opportunity to open the plate package and clean the spaces between the pairs of welded heat exchanger plates.
Svetsarna, som ersätter packningarna i vartannat plattmellanrum runt värmeväxlarplattornas värmeväxlingsyta, reducerar behovet av packningsbyte och höjer säkerheten.The welds, which replace the gaskets in every other plate space around the heat exchange surface of the heat exchanger plates, reduce the need for gasket replacement and increase safety.
Viktiga faktorer för hygieniska applikationer är värmeväxlarplattornas material och utformning, vårmeöverföringsytornas konstruktion avseende mönster och pressdjup, etc. Ett kritiskt område hos värmeväxlaren och i synnerhet värmeväxlarplattorna när det gäller döda zoner är vid porthàlen, vilka normalt är utformade med ett antal s k knastar, d v s alternerande àsar och dalar som är jämnt fördelade kring porthålet i form av ett vågmönster. Knastarna utgör kontaktpunkter och har den viktiga funktionen att uppta krafter och stödja konstruktionen vid de höga tyck som uppstår i värmeväxlaren. Då två eller flera värmeväxlarplattor placeras intill varandra bildas emellertid p g a knastarna utrymmen i själva strömningspassagen, s k döda zoner i vilka strömmande vätska kan bli stillastående och i vätskan ingående tast material, kan fångas upp och ackumuleras. 10 15 20 25 528 847 De packningar som för närvarande användes vid denna typ av värmeväxlarplattor sammanfogade till Kassetter utgöres exempelvis av s k “clip-on”-packningar, d v s packningar som låses fast vid värmeväxlarplattornas periferi och kring porthålen medelst utskjutande làsorgan anordnade i packningen, vilka kläms fast kring kanten hos värmeväxlarplattan. Speciellt i porthålen kan dessa utskjutande làsorgan ytterligare bidra till att fibrer, m m fastnar.Important factors for hygienic applications are the material and design of the heat exchanger plates, the design of the heat transfer surfaces in terms of pattern and depth of press, etc. A critical area of the heat exchanger and in particular the heat exchanger plates in dead zones is at axes and valleys that are evenly distributed around the gate hole in the form of a wave pattern. The lugs are contact points and have the important function of absorbing forces and supporting the construction at the high pressures that occur in the heat exchanger. When two or more heat exchanger plates are placed next to each other, however, due to the lugs, spaces are formed in the flow passage itself, so-called dead zones in which flowing liquid can become stationary and key material contained in the liquid can be captured and accumulated. The gaskets currently used in this type of heat exchanger plates joined to cassettes consist, for example, of so-called "clip-on" gaskets, i.e. gaskets which are locked at the periphery of the heat exchanger plates and around the door holes by means of projecting locking means arranged in the gasket. which are clamped around the edge of the heat exchanger plate. Especially in the door holes, these projecting locking means can further contribute to fibers, etc. getting stuck.
GB 809 886 beskriver en plattvärmeväxlare för två värmeväxlande fluider där porthålen är utförda runda och jämna för att undvika problemen med att fibrer och partiklar fastnar. Denna lösning åstadkommas genom att porthålets kant är utpressad under bildande av en fläns eller krage.GB 809 886 describes a plate heat exchanger for two heat exchanging fluids where the port holes are made round and smooth to avoid the problems of fibers and particles getting stuck. This solution is achieved by squeezing the edge of the door hole to form a flange or collar.
Flänsarna hos motstàende porthål är anordnade så att de anligger mot varandra, varigenom en slät kanal bildas genom plattpaketet. Denna lösning är emellertid förknippad med svårigheter vid tillverkningen.The flanges of opposite port holes are arranged so that they abut each other, whereby a smooth channel is formed through the plate package. However, this solution is associated with manufacturing difficulties.
Sammanfattning av uppfinningen Syftet med uppfinningen år att undanröja eller åtminstone minska de ovan angivna problemen och att åstadkomma en förbättrad lösning för ett porthål hos en värmeväxlarplatta. l synnerhet eftersträvas ett nytt och bättre packningsaggregat speciellt avsett för porthålen hos en kassett innefattande två värmeväxlarplattor.SUMMARY OF THE INVENTION The object of the invention is to eliminate or at least reduce the above-mentioned problems and to provide an improved solution for a door hole of a heat exchanger plate. In particular, a new and better packing unit is sought, especially intended for the port holes of a cassette comprising two heat exchanger plates.
Detta syfte uppnås enligt uppfinningen genom det inledningsvis angivna packningsaggregatet, vilket kännetecknas av att nämnda packning i området kring portarna längs sin mot porthålet vända sida innefattar en runtomgående utskjutande vulst. 10 15 20 25 30 528 847 Tack vare packningsaggregatets utformning reduceras de s k döda zonerna i porthålen kraftigt. istället bildas en jämn yta i passagen genom portkanalen och risken för att högviskösa vätskor som eventuellt innehåller partikulär eller fiberartad produkt ska fastna, undviks väsentligen. Om material trots allt skulle fastna bidrar packningens jämna yta i samverkan med porthålets utformning till att förutsättningarna för att materialet s k sköljas bort ökar. Packningsaggregatet enligt uppfinningen minskar därmed även risken för bakterietillväxt, vilket är en stor och viktig fördel, framförallt inom användningsområden där kraven på hygien är extra höga.This object is achieved according to the invention by the initially stated packing assembly, which is characterized in that said packing in the area around the gates along its side facing the gate hole comprises a circumferential projecting bead. 10 15 20 25 30 528 847 Thanks to the design of the packing unit, the so-called dead zones in the door holes are greatly reduced. instead, a smooth surface is formed in the passage through the port channel and the risk of highly viscous liquids that may contain particulate or fibrous product getting stuck is substantially avoided. If material should nevertheless stick, the smooth surface of the gasket in conjunction with the design of the door hole contributes to an increase in the conditions for the so-called material being washed away. The packing unit according to the invention thus also reduces the risk of bacterial growth, which is a large and important advantage, especially in areas of use where the requirements for hygiene are extra high.
Enligt en alternativ utföringsform av uppfinningen är packningsaggregatet utformat sä att packningen i området kring portarna längs sin mot porthålet vända sida innefattar motstående urtag på över- och undersidan hos packningen. Genom en sådan konstruktion hos packningen kan de döda zonerna i stort sett elimineras helt och hållet. Detta är en stor fördel inom bl a livsmedels- och läkemedelsindustrin där kraven på hygien är mycket stränga.According to an alternative embodiment of the invention, the gasket assembly is designed so that the gasket in the area around the gates along its side facing the door hole comprises opposite recesses on the upper and lower side of the gasket. Due to such a construction of the gasket, the dead zones can be largely eliminated completely. This is a great advantage in, among other things, the food and pharmaceutical industry, where the requirements for hygiene are very strict.
Enligt ytterligare en utföringsform av uppfinningen har värmeväxlarplattan en runtomgående äs kring porten anordnad på utsidan av kassetten mellan porthålet och packningsspåret. Enligt en fördelaktig utföringsform av packningsaggregatet enligt uppfinningen samverkar åsen och packningen genom att packningens vulst anligger mot den kring porthålet runtomgående åsen. Därmed säkerställs att packningen inte rubbas ur sitt läge vid de höga tryck som uppstår vid drift.According to a further embodiment of the invention, the heat exchanger plate has a circumferential axis around the door arranged on the outside of the cassette between the door hole and the packing groove. According to an advantageous embodiment of the packing assembly according to the invention, the ridge and the packing cooperate in that the bead of the packing abuts against the ridge surrounding the gate hole. This ensures that the gasket is not disturbed from its position at the high pressures that occur during operation.
Enligt en fördelaktig utföringsform av packningsaggregatet enligt uppfinningen är vulsten utformad så att kassetterna tillsammans med packningen i portarna uppvisar en väsentligen slät kanal genom 10 15 20 25 528 847 plattpaketet. l denna utföringsform bidrar packningens jämna yta i samverkan med porthålets utformning till att risken för att material ska fastna minskar. Enligt ytterligare fördelaktiga utföringsformer av packningsaggregatet enligt uppfinningen är värmeväxlarplattorna parvis permanent förenade med varandra genom svetsning eller lödning.According to an advantageous embodiment of the packing assembly according to the invention, the bead is designed so that the cassettes together with the packing in the ports have a substantially smooth channel through the plate package. In this embodiment, the smooth surface of the gasket in conjunction with the design of the door hole contributes to reducing the risk of material sticking. According to further advantageous embodiments of the packing assembly according to the invention, the heat exchanger plates are permanently connected to each other in pairs by welding or soldering.
Syftet med uppfinningen uppnås även genom en plattvärmeväxlare innefattande åtminstone ett packningsaggregat enligt något av krav 1-4. Ändamålet med uppfinningen uppnås även med en packning, som innefattar de i patentkravet 6 angivna särdragen.The object of the invention is also achieved by a plate heat exchanger comprising at least one packing unit according to any one of claims 1-4. The object of the invention is also achieved with a gasket which comprises the features stated in claim 6.
Kort beskrivning av ritnindarna Uppfinningen kommer nu att förklaras närmare genom beskrivning av olika, som exempel visade utföringsformer under hänvisning till de bifogade ritningarna, på vilka Fig 1 schematiskt visar en planvy av ett packningsaggregat innefattande en packning och en värmeväxlarplatta enligt uppfinningen, Fig 2 schematiskt visar en planvy av packningsaggregatet enligt uppfinningen i större skala, Fig 3 schematiskt visar en tvärsnittsvy av olika packningar, varvid packningen enligt A representerar en känd packning och packningarna enligt B samt C är två alternativa utföringsformer av packningen enligt uppfinningen, vilka är anordnade vid porthålet hos en plattvärmeväxlare enligt uppfinningen, och 10 15 20 25 30 528 847 Fig 4 visar en perspektivvy av porthàlet hos ett packningsaggregat enligt uppfinningen.Brief description of the drawings The invention will now be explained in more detail by describing various exemplary embodiments with reference to the accompanying drawings, in which Fig. 1 schematically shows a plan view of a gasket assembly comprising a gasket and a heat exchanger plate according to the invention, Fig. 2 schematically shows a plan view of the gasket assembly according to the invention on a larger scale, Fig. 3 schematically shows a cross-sectional view of different gaskets, the gasket according to A representing a known gasket and the gaskets according to B and C are two alternative embodiments of the gasket according to the invention. plate heat exchanger according to the invention, and Fig. 4 shows a perspective view of the port hole of a gasket assembly according to the invention.
Detalierad beskrivning av föredragna utföringsformer av uggfinningen I Fig 1 och 2 visas en kassett 1 innefattande två permanent sammanfogade värmeväxlarplattor 2 och en packning 3 enligt uppfinningen. Plattorna har åtminstone fyra portar som bildar inlopps- och utloppsportar 4, 5, 6, 7 och en värmeöverföringsyta 8 med åsar 9 och dalar 10. Kassetten 1 kan vara tillverkad genom svetsning eller lödning, varvid de båda plattorna 2 är permanent sammanfogade längs sin periferi och kring åtminstone två av portarna 4, 5.Detailed Description of Preferred Embodiments of the Ugg Invention Figures 1 and 2 show a cassette 1 comprising two permanently joined heat exchanger plates 2 and a gasket 3 according to the invention. The plates have at least four ports forming inlet and outlet ports 4, 5, 6, 7 and a heat transfer surface 8 with ridges 9 and valleys 10. The cassette 1 may be made by welding or soldering, the two plates 2 being permanently joined along their periphery and around at least two of the ports 4, 5.
Genom att utforma värmeväxlarplattorna 2 så att så få kontaktpunkter som möjligt uppstår mellan två intilliggande kassetter undviks att fibrer och fast material som kan ingå i fluidet fastnar i utrymmet mellan kassetterna. Enligt uppfinningen är plattorna vidare konstruerade så att kontaktpunkter för erforderligt mekaniskt stöd i stort sett endast förekommer på insidan mellan två plattor som ska sammanfogas till en kassett genom att motstående åsar anligger mot varandra. Vid porthålen 4 och 5 anligger däremot plattorna mot varandra helt och hållet och är permanent sammanfogade så att en tätning bildas mot fluidet som ska strömma genom porthålen. Vid porthålen 6 och 7, som utgör inlopp och utlopp till kassetterna, är i stället knastar 11 utformade, vilket är nödvändigt för att ge erforderligt mekaniskt stöd vid porthålet.By designing the heat exchanger plates 2 so that as few contact points as possible arise between two adjacent cassettes, it is avoided that fibers and solid material that can be included in the fluid get stuck in the space between the cassettes. According to the invention, the plates are further designed so that contact points for the required mechanical support substantially only occur on the inside between two plates which are to be joined to a cassette by abutting opposite ridges against each other. At the port holes 4 and 5, on the other hand, the plates abut each other completely and are permanently joined together so that a seal is formed against the fluid which is to flow through the port holes. At the port holes 6 and 7, which constitute the inlet and outlet to the cassettes, instead, studs 11 are formed, which is necessary to provide the necessary mechanical support at the port hole.
Packningen 3, som företrädesvis är framställd av ett elastiskt material, exempelvis gummimaterial, är anordnad i ett spår 12 som sträcker sig längs periferin hos de i kassetten ingående plattorna och kring portarna 4 och 5. Fiunt portarna 6 och 7 finns en ringpackning 13. Packningens 3 uppgift är att avtäta utrymmet mellan två kassetter och har i området 10 15 20 25 30 528 847 kring portarna 4 och 5, längs sin mot porthålet vända sida en runtomgående utskjutande vulst 14, vilken kan ha en tvärsnittskonflguration som exempelvis framgår av packningarna enligt B och C i Fig 3. Eventuellt kan packningen innefatta en metall eller vara omsluten av ett annat material, exempelvis metall, PTFE, etc.The gasket 3, which is preferably made of an elastic material, for example rubber material, is arranged in a groove 12 which extends along the periphery of the plates included in the cassette and around the ports 4 and 5. In addition to the ports 6 and 7 there is a ring gasket 13. 3 task is to seal the space between two cassettes and has in the area 10 15 20 25 30 528 847 around the ports 4 and 5, along its side facing the port hole a circumferential projecting bead 14, which may have a cross-sectional configuration as shown for example by the gaskets according to B and C in Fig. 3. Optionally, the gasket may comprise a metal or be enclosed by another material, for example metal, PTFE, etc.
För att packningen 3 skall vara fast anordnad vid porthålet och inte pressas eller glida ur spåret 12 vid höga tryck och temperaturer, är en runtomgående ås 15 utformad i plattan kring porten på utsidan av kassetten mellan porthålet 4 eller 5 och packningsspåret 12. Åsens 15 höjd år sådan att en spalt bildas mellan två motstående àsar då två kassetter anordnas intill varandra. Vid packnlngsaggregatet enligt uppfinningen är packningen 3 således placerad i spåret 12 så att vulsten 14 anligger mot åsen 15 hos de i kassetterna ingående plattorna vid porthålen 4 och 5. Tack vare detta arrangemang hålls packningen säkert på plats samtidigt som en tät, jämn och slät yta bildas i porthålet 4 eller 5 och i portkanalen, vilket tydligt framgår av Fig 4. l Fig 3 visas hur den döda zonens volym påverkas av packningens tvärsnittskonfiguration. Då packningen 3 har en konfiguration enligt A, d v s är utformad utan någon vulst 14, uppstår ett stort utrymme som begränsas av packningen A och värmeväxlarplattan vid porthålet, vilket normalt är omgivet av knastar. l denna s k döda zon fångas fluidet upp, varvid fibrer och annat fast material fastnar och därmed utgör grogrund för tillväxt av bakterier.In order for the gasket 3 to be fixedly attached to the port hole and not be pressed or slide out of the groove 12 at high pressures and temperatures, a circumferential ridge 15 is formed in the plate around the port on the outside of the cassette between the port hole 4 or 5 and the packing groove 12. is such that a gap is formed between two opposite axes when two cassettes are arranged next to each other. In the packing assembly according to the invention, the gasket 3 is thus placed in the groove 12 so that the bead 14 abuts against the ridge 15 of the plates included in the cassettes at the port holes 4 and 5. Thanks to this arrangement the gasket is held securely in place while a dense, smooth and smooth surface is formed in the port hole 4 or 5 and in the port channel, which is clearly shown in Fig. 4. Fig. 3 shows how the volume of the dead zone is affected by the cross-sectional configuration of the gasket. When the gasket 3 has a configuration according to A, i.e. is designed without any bead 14, a large space arises which is limited by the gasket A and the heat exchanger plate at the door hole, which is normally surrounded by studs. In this so-called dead zone, the fluid is captured, whereby fibers and other solid material become stuck and thus form a breeding ground for the growth of bacteria.
Om å andra sidan packningens tvärsnittskonfiguration utformas i enlighet med uppfinningen enligt B, d v s så att den i området kring portarna längs sin mot porthålet vända sida innefattar en runtomgående utskjutande vulst 14, kommer den döda zonens volym att reduceras kraftigt. Genom 10 15 20 528 847 att vulsten 14 anligger mot àsen 15 ästadkommes dessutom en slätare yta i portkanalen. l en andra utföringsform av uppfinningen har packningen en tvärsnittskonfiguration enligt C, där vulsten 14 är utformad så att packningen 3 i området kring portarna längs sin mot porthälet vända sida innefattar motstående urtag 16 på över- och undersidan hos packningen. i detta fall är i stort sett hela utrymmet vid porthàlen mellan två kassetter utfyllt av packningen, den döda zonen eliminerad och en jämn, slät yta bildas i portkanalen.On the other hand, if the cross-sectional configuration of the gasket is designed in accordance with the invention according to B, i.e. so that in the area around the gates along its side facing the gate hole comprises a circumferential projecting bead 14, the volume of the dead zone will be greatly reduced. By the fact that the bead 14 abuts against the axis 15, a smoother surface is also created in the door channel. In a second embodiment of the invention, the gasket has a cross-sectional configuration according to C, where the bead 14 is designed so that the gasket 3 in the area around the gates along its side facing the door heel comprises opposite recesses 16 on the upper and lower side of the gasket. in this case, substantially all of the space at the port hole between two cassettes filled by the gasket, the dead zone is eliminated and a smooth, smooth surface is formed in the port channel.
Tack vare utformningen av ett packningsaggregat enligt uppfinningen där en às kring porthálet i en värmeväxlarplatta samverkar med en vulst hos packningen åstadkommas en portkanal med en i största möjlig män slät yta, utan eller med kraftigt reducerade döda zoner. Detta är av stor betydelse framför allt vid användning av plattvärmeväxlare där det finns stränga krav på hygien men även i andra applikationer där igensättning och s k fouling normalt är ett problem. Genom packningsaggregatet och värmeväxlaren innefattande packningsaggregatet enligt uppfinningen kan en plattvärmeväxlare som uppfyller högt ställda krav pà hygien och enkel rengöring åstadkommas.Thanks to the design of a gasket assembly according to the invention where an axis around the door hollow in a heat exchanger plate cooperates with a bead of the gasket, a door channel is provided with a smooth surface as large as possible, without or with greatly reduced dead zones. This is of great importance especially when using plate heat exchangers where there are strict requirements for hygiene but also in other applications where clogging and so-called fouling is normally a problem. Through the packing unit and the heat exchanger comprising the packing unit according to the invention, a plate heat exchanger which meets high requirements for hygiene and easy cleaning can be achieved.
Det ska inses att andra här ej visade utföringsformer av uppfinningen också är möjliga utan att awika från uppfinningens omfång, vilket anges i de bifogade kraven.It is to be understood that other embodiments of the invention not shown herein are also possible without departing from the scope of the invention, as set forth in the appended claims.
Claims (6)
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0500216A SE528847C2 (en) | 2005-01-28 | 2005-01-28 | Gasket assembly for plate heat exchanger |
| PCT/SE2006/000049 WO2006080874A1 (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| JP2007553063A JP5225692B2 (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| CN200680003446.3A CN101124450B (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| NZ556193A NZ556193A (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| AT06700449T ATE538354T1 (en) | 2005-01-28 | 2006-01-13 | SEALING ARRANGEMENT FOR PLATE HEAT EXCHANGERS |
| US11/813,541 US20080196873A1 (en) | 2005-01-28 | 2006-01-13 | Gasket Assembly for Plate Heat Exchanger |
| ES06700449T ES2377509T3 (en) | 2005-01-28 | 2006-01-13 | Seal gasket assembly for plate heat exchanger |
| AU2006209162A AU2006209162B2 (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| EP06700449A EP1842022B1 (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| PT06700449T PT1842022E (en) | 2005-01-28 | 2006-01-13 | Gasket assembly for plate heat exchanger |
| DK06700449.9T DK1842022T3 (en) | 2005-01-28 | 2006-01-13 | Seal design for plate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0500216A SE528847C2 (en) | 2005-01-28 | 2005-01-28 | Gasket assembly for plate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE0500216L SE0500216L (en) | 2006-07-29 |
| SE528847C2 true SE528847C2 (en) | 2007-02-27 |
Family
ID=36740797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0500216A SE528847C2 (en) | 2005-01-28 | 2005-01-28 | Gasket assembly for plate heat exchanger |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20080196873A1 (en) |
| EP (1) | EP1842022B1 (en) |
| JP (1) | JP5225692B2 (en) |
| CN (1) | CN101124450B (en) |
| AT (1) | ATE538354T1 (en) |
| AU (1) | AU2006209162B2 (en) |
| DK (1) | DK1842022T3 (en) |
| ES (1) | ES2377509T3 (en) |
| NZ (1) | NZ556193A (en) |
| PT (1) | PT1842022E (en) |
| SE (1) | SE528847C2 (en) |
| WO (1) | WO2006080874A1 (en) |
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| SE527981C2 (en) * | 2004-06-04 | 2006-07-25 | Alfa Laval Corp Ab | Method and apparatus for assessing the risk of fluid leakage in a heat exchanger with sensor |
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| SE530012C2 (en) * | 2006-06-05 | 2008-02-12 | Alfa Laval Corp Ab | Plate and gasket for plate heat exchanger |
| FR2910607B1 (en) * | 2006-12-21 | 2009-02-06 | Alfa Laval Vicard Soc Par Acti | PLATE HEAT EXCHANGER |
| SE532714C2 (en) * | 2007-12-21 | 2010-03-23 | Alfa Laval Corp Ab | Plate heat exchanger device and plate heat exchanger |
| SE531856C2 (en) * | 2007-12-21 | 2009-08-25 | Alfa Laval Corp Ab | Plate heat exchanger with fitting device |
| SE532344C2 (en) * | 2007-12-21 | 2009-12-22 | Alfa Laval Corp Ab | Gasket support in heat exchanger and heat exchanger including gasket support |
| SE532345C2 (en) | 2007-12-21 | 2009-12-22 | Alfa Laval Corp Ab | Heat exchanger plate, heat exchanger cartridge and heat exchanger with gasket groove |
| SE533310C2 (en) | 2008-11-12 | 2010-08-24 | Alfa Laval Corp Ab | Heat exchanger plate and heat exchanger including heat exchanger plates |
| SE533205C2 (en) * | 2008-12-03 | 2010-07-20 | Alfa Laval Corp Ab | Heat |
| SE533359C2 (en) | 2008-12-16 | 2010-09-07 | Alfa Laval Corp Ab | Plate and gasket for a plate heat exchanger |
| EP2317187A1 (en) * | 2009-10-30 | 2011-05-04 | Alfa Laval Corporate AB | A gasket and gasket locating arrangements |
| US20130062039A1 (en) * | 2011-09-08 | 2013-03-14 | Thermo-Pur Technologies, LLC | System and method for exchanging heat |
| US8869398B2 (en) | 2011-09-08 | 2014-10-28 | Thermo-Pur Technologies, LLC | System and method for manufacturing a heat exchanger |
| EP2626661B1 (en) | 2012-02-07 | 2018-02-28 | Danfoss A/S | stacked plate heat exchanger having a groove and a gasket |
| DK2730878T3 (en) * | 2012-11-07 | 2019-06-11 | Alfa Laval Corp Ab | PLATFORM AND PROCEDURE FOR MANUFACTURE OF A PLATFORM |
| USD736361S1 (en) * | 2013-02-22 | 2015-08-11 | The Abell Foundation, Inc. | Evaporator heat exchanger plate |
| USD735842S1 (en) * | 2013-02-22 | 2015-08-04 | The Abell Foundation, Inc. | Condenser heat exchanger plate |
| CN103256838B (en) * | 2013-05-09 | 2015-08-12 | 合肥通用机械研究院 | All-welded corrugated sheet heat exchanger |
| CN103335546B (en) * | 2013-05-09 | 2015-07-01 | 合肥通用机械研究院 | Plate type heat exchanger |
| EP3032208B1 (en) * | 2014-12-10 | 2017-04-19 | Danfoss A/S | Gasket groove for a plate heat exchanger |
| WO2017029011A1 (en) | 2015-08-14 | 2017-02-23 | Danfoss A/S | A vapour compression system with at least two evaporator groups |
| WO2017067858A1 (en) | 2015-10-20 | 2017-04-27 | Danfoss A/S | A method for controlling a vapour compression system with a variable receiver pressure setpoint |
| MX2018004604A (en) | 2015-10-20 | 2018-07-06 | Danfoss As | A method for controlling a vapour compression system in ejector mode for a prolonged time. |
| EP3217132B1 (en) * | 2016-03-07 | 2018-09-05 | Bosal Emission Control Systems NV | Plate heat exchanger and method for manufacturing a plate heat exchanger |
| US10876794B2 (en) | 2017-06-12 | 2020-12-29 | Ingersoll-Rand Industrial U.S., Inc. | Gasketed plate and shell heat exchanger |
| DK179580B1 (en) * | 2017-11-22 | 2019-02-20 | Danfoss A/S | Heat transfer plate for plate heat exchanger and plate heat exchanger with the same |
| EP3489606A1 (en) * | 2017-11-22 | 2019-05-29 | Danfoss A/S | Heat transfer plate for plate heat exchanger and plate heat exchanger with the same |
| SE541905C2 (en) | 2017-12-05 | 2020-01-02 | Swep Int Ab | Heat exchanger and method for forming heat exchanger plates |
| US10914652B2 (en) * | 2018-05-31 | 2021-02-09 | Wcr, Inc. | Leak detection for heat exchanger plate |
| PL3587984T3 (en) | 2018-06-28 | 2021-04-06 | Alfa Laval Corporate Ab | Heat transfer plate and gasket |
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| DK180145B1 (en) * | 2018-11-27 | 2020-06-25 | Danfoss As Intellectual Property | Plate heat exchanger |
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| LT4083561T (en) * | 2021-04-27 | 2023-11-27 | Alfa Laval Corporate Ab | Heat transfer plate and gasket |
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-
2005
- 2005-01-28 SE SE0500216A patent/SE528847C2/en unknown
-
2006
- 2006-01-13 EP EP06700449A patent/EP1842022B1/en active Active
- 2006-01-13 DK DK06700449.9T patent/DK1842022T3/en active
- 2006-01-13 WO PCT/SE2006/000049 patent/WO2006080874A1/en active Application Filing
- 2006-01-13 ES ES06700449T patent/ES2377509T3/en active Active
- 2006-01-13 CN CN200680003446.3A patent/CN101124450B/en active Active
- 2006-01-13 AU AU2006209162A patent/AU2006209162B2/en active Active
- 2006-01-13 PT PT06700449T patent/PT1842022E/en unknown
- 2006-01-13 AT AT06700449T patent/ATE538354T1/en active
- 2006-01-13 JP JP2007553063A patent/JP5225692B2/en active Active
- 2006-01-13 US US11/813,541 patent/US20080196873A1/en not_active Abandoned
- 2006-01-13 NZ NZ556193A patent/NZ556193A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1842022A4 (en) | 2010-08-11 |
| AU2006209162B2 (en) | 2010-06-03 |
| EP1842022B1 (en) | 2011-12-21 |
| WO2006080874A1 (en) | 2006-08-03 |
| SE0500216L (en) | 2006-07-29 |
| CN101124450A (en) | 2008-02-13 |
| JP2008528927A (en) | 2008-07-31 |
| DK1842022T3 (en) | 2012-03-19 |
| US20080196873A1 (en) | 2008-08-21 |
| ATE538354T1 (en) | 2012-01-15 |
| AU2006209162A1 (en) | 2006-08-03 |
| ES2377509T3 (en) | 2012-03-28 |
| EP1842022A1 (en) | 2007-10-10 |
| JP5225692B2 (en) | 2013-07-03 |
| CN101124450B (en) | 2011-11-16 |
| PT1842022E (en) | 2012-03-16 |
| NZ556193A (en) | 2009-11-27 |
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