EP0450188A1 - Dichtungsvorrichtung für eine Platte eines Wärmetauschers und Wärmetauscher mit solcher Vorrichtung - Google Patents

Dichtungsvorrichtung für eine Platte eines Wärmetauschers und Wärmetauscher mit solcher Vorrichtung Download PDF

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Publication number
EP0450188A1
EP0450188A1 EP90125226A EP90125226A EP0450188A1 EP 0450188 A1 EP0450188 A1 EP 0450188A1 EP 90125226 A EP90125226 A EP 90125226A EP 90125226 A EP90125226 A EP 90125226A EP 0450188 A1 EP0450188 A1 EP 0450188A1
Authority
EP
European Patent Office
Prior art keywords
plate
groove
heat exchanger
projections
seal
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.)
Ceased
Application number
EP90125226A
Other languages
English (en)
French (fr)
Inventor
Luca Cipriani
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.)
Cipriani Scambiatori Srl
Original Assignee
Cipriani Scambiatori Srl
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 Cipriani Scambiatori Srl filed Critical Cipriani Scambiatori Srl
Publication of EP0450188A1 publication Critical patent/EP0450188A1/de
Ceased 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
    • F28F3/10—Arrangements for sealing the margins

Definitions

  • the present invention relates to a sealing device for heat exchanger plate and to a heat exchanger provided with plates having such device.
  • the present invention relates to a sealing device for heat exchanger plates which may very easily placed or removed, and to a heat exchanger provided with plates provided with this kind of sealing device.
  • the invention may be mainly applied in the field of the thermo-mechanical industry.
  • Plate-type heat exchanger devices are well known.
  • These devices are constituted by a fixed and a movable endplate, one or both of them being provided, according to different applications, with inlet and outlet connections for fluids, and with a pack of metallic plates, generally stainless steel plates, disposed between said endplates.
  • Said metallic plates which are bored close to their angled edges in order to allow the circulation of the fluids, constitute the surface of thermal exchange between the fluids and are provided with a seeries of ribs, in order to increase the surface and the fluid turbulence; said ribs generally disposed according to a herringbone or a so-called laundress-board pattern.
  • seals made of an elastic, rubber-like, material, which delimit and physically separate the pair of channels formed inside of the heat exchanger and within which the fluids circulate.
  • This type of device is generally used in applications of various kinds, e.g. for instantaneously producing sanitary hot water by means of a boiler, with or without buffers, or for heating with a geothermal exploitation, or for swimming-pool heating by means of a boiler, or for teleheating.
  • the devices are differently dimensioned in what concerns the surface and the number of plates, and are provided with different feeding circuits.
  • peripheral seals play a determinant role for the functionality of plate-type heat exchangers.
  • a classic solution provides for glueing the seal against the groove bottom by means of suitable bonding agents.
  • Said solution has several drawbacks and disadvantages, which are mainly due to the high material and labour costs involved by the glueing operation and to the fact that the plate mantainance is extremely difficult in case of the substitution of a seal.
  • the groove should be carefully cleaned, and a new layer of bonding agent is placed in the same; a new seal is then placed within the groove and a certain time must pass before the seal perfectly adheres to its seat.
  • the seal is provided, along its periphery, with a series of essentially cylindrically-shaped extensions which are suitable for being pressure-housed within corresponding bores provided along the external periphery of the plate.
  • this embodiment has also some drawbacks, since it requires the seal to be extremely precisely placed on the plate, in such a way as each extension is exactly placed in front of a plate bore.
  • a further embodiment known in the art provides for a series of tongue-like projections, made in the same rubber-like material constituting the seal, to be formed along the external peryphery of the seal itself.
  • document EP-A-0 039 229 discloses the use of elements which are external relative to the seal and which are used for keeping the seal in touch with the plate.
  • said elements push an extension which is provided in the seal against the plate and allow, therefore, the heat exchanger to be easily assembled and dis-assembled without using any bonding agents between the seal and the plate.
  • the main purpose present invention is that of obviating to the disadvantages and drawbacks which are typical of the background art, and to provide therefore for a seal device for a plate-type heat exchanger which may be rapidly placed on the plate or easily removed from it, which is at the same time solidly fixed to the plate, in such a way as to resist to thermal and/or mechanical stresses, and which is cheap and of easy production.
  • the seal according to the present invention comprises, along its external periphery, a series of tongue-like projections made in the same elastic material constituting the seal itself.
  • Each of these projections has a notch suitable for cooperating with a corresponding groove which is provided in the plate; furthermore, said projection is provided with a groove suitable for housing a first portion of a resilient, clip-shaped, clamping element, another portion of said clamping element being suitable for cooperating with said groove provided in the plate.
  • reference sign 10 generally indicates a seal device for a plate-type heat exchanger according to the present invention.
  • the device 10 comprises a gasket 11 made of a resilient material, generally of rubber, which is suitable for being housed within a first groove 12 formed along the peryphery of a plate 13 of a plate-type heat exchanger, said plate 13 being provided with ribs 14 suitable for increasing the thermal exchange between the two fluids circulating in the channels formed by a plurality of superposed plates.
  • a gasket 11 made of a resilient material, generally of rubber, which is suitable for being housed within a first groove 12 formed along the peryphery of a plate 13 of a plate-type heat exchanger, said plate 13 being provided with ribs 14 suitable for increasing the thermal exchange between the two fluids circulating in the channels formed by a plurality of superposed plates.
  • the gasket 11 comprises a series of projections 15 which are regularly disposed in respect of each other, and which are transversally extended towards the outside.
  • Each of said projections 15 has a step shape and defines a second lower groove 16 and a third upper groove 17.
  • the plate 13 comprises, along its external periphery, a series of notches having projecting ridges 18 forming, at the same time, a fourth groove 19 in the lower part of the plate 13 and a supporting surface for the step-shaped projections 15 belonging to the gasket 11.
  • Said third (17) and fourth (19) grooves cooperate, when installed, with an element 20 for clamping the gasket 11 on the plate 13.
  • Said element 20 which may be formed in a metallic or a plastic material, is substantially clip-shaped and includes an upper portion 21, suitable for being housed within said third groove 17, and a lower portion 22, suitable for being housed within said fourth groove 19.
  • the gasket 11 When installed, the gasket 11 is placed within said first groove 12, with the projections 15 resting on the notches provided along the periphery of the plate 13.
  • any glueing operation of the gasket 11 on the plate appears to be redundant and, further, for carrying out a plate mantainance it is enough to remove the elements 20 for easily substituting or cleaning either of the gasket and the plate, without incurring the risk of damaging any of them, as in the background art embodiments.

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)
EP90125226A 1990-04-05 1990-12-21 Dichtungsvorrichtung für eine Platte eines Wärmetauschers und Wärmetauscher mit solcher Vorrichtung Ceased EP0450188A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT84935A IT1239317B (it) 1990-04-05 1990-04-05 Dispositivo formante guarnizione di tenuta per piastra di scambiatore di calore dotato di piastre aventi tale dispositivo.
IT8493590 1990-04-05

Publications (1)

Publication Number Publication Date
EP0450188A1 true EP0450188A1 (de) 1991-10-09

Family

ID=11326061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125226A Ceased EP0450188A1 (de) 1990-04-05 1990-12-21 Dichtungsvorrichtung für eine Platte eines Wärmetauschers und Wärmetauscher mit solcher Vorrichtung

Country Status (2)

Country Link
EP (1) EP0450188A1 (de)
IT (1) IT1239317B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506281A1 (de) * 1995-02-23 1996-08-29 Schmidt Bretten Gmbh Umfangsdichtung eines Plattenwärmeübertragers
WO2010071551A3 (en) * 2008-12-16 2011-11-03 Alfa Laval Corporate Ab Plate and gasket for a plate heat exchanger
GB2574021A (en) * 2018-05-22 2019-11-27 Trp Sealing Systems Ltd Gasket for a plate heat exchanger
RU2718109C1 (ru) * 2018-10-15 2020-03-30 Данфосс А/С Крепление прокладки к теплообменной пластине
CN112747614A (zh) * 2019-10-31 2021-05-04 丹佛斯有限公司 热交换器板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039229A2 (de) * 1980-04-30 1981-11-04 Alfa-Laval Ab Plattenwärmetauscher
WO1985000052A1 (en) * 1983-06-16 1985-01-03 Alfa-Laval Thermal Ab A gasket arrangement for a plate heat exchanger
EP0134155A1 (de) * 1983-08-23 1985-03-13 APV UK Limited Wärmeübertragungsplatte
US4905758A (en) * 1989-07-03 1990-03-06 Tranter, Inc. Plate heat exchanger

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039229A2 (de) * 1980-04-30 1981-11-04 Alfa-Laval Ab Plattenwärmetauscher
WO1985000052A1 (en) * 1983-06-16 1985-01-03 Alfa-Laval Thermal Ab A gasket arrangement for a plate heat exchanger
EP0134155A1 (de) * 1983-08-23 1985-03-13 APV UK Limited Wärmeübertragungsplatte
US4905758A (en) * 1989-07-03 1990-03-06 Tranter, Inc. Plate heat exchanger

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506281A1 (de) * 1995-02-23 1996-08-29 Schmidt Bretten Gmbh Umfangsdichtung eines Plattenwärmeübertragers
US5727620A (en) * 1995-02-23 1998-03-17 Schmidt-Bretten Gmbh Rim sealed plate-type heat exchanger
US9212854B2 (en) 2008-12-16 2015-12-15 Alfa Laval Corporate Ab Plate and gasket for a plate heat exchanger
CN102317733A (zh) * 2008-12-16 2012-01-11 阿尔法拉瓦尔股份有限公司 用于板式热交换器的板和衬垫
RU2478892C2 (ru) * 2008-12-16 2013-04-10 Альфа Лаваль Корпорейт Аб Пластина и уплотнение для пластинчатого теплообменника
CN104075609A (zh) * 2008-12-16 2014-10-01 阿尔法拉瓦尔股份有限公司 用于板式热交换器的板和衬垫
CN104075609B (zh) * 2008-12-16 2017-04-12 阿尔法拉瓦尔股份有限公司 用于板式热交换器的板和衬垫
WO2010071551A3 (en) * 2008-12-16 2011-11-03 Alfa Laval Corporate Ab Plate and gasket for a plate heat exchanger
US11592242B2 (en) * 2018-05-22 2023-02-28 TRP Sealing Systems Limited Gasket for a plate heat exchanger
GB2574021A (en) * 2018-05-22 2019-11-27 Trp Sealing Systems Ltd Gasket for a plate heat exchanger
WO2019224537A1 (en) * 2018-05-22 2019-11-28 TRP Sealing Systems Limited Gasket for a plate heat exchanger
CN112219082A (zh) * 2018-05-22 2021-01-12 Trp密封系统有限公司 板式换热器的垫片
CN112219082B (zh) * 2018-05-22 2023-06-13 Trp密封系统有限公司 板式换热器的垫片
GB2574021B (en) * 2018-05-22 2023-03-01 Trp Sealing Systems Ltd Gasket for a plate heat exchanger
JP2021524901A (ja) * 2018-05-22 2021-09-16 ティーアールピー シーリング システムズ リミテッド プレート式熱交換器用ガスケット
RU2718109C1 (ru) * 2018-10-15 2020-03-30 Данфосс А/С Крепление прокладки к теплообменной пластине
CN112747614B (zh) * 2019-10-31 2022-11-08 丹佛斯有限公司 热交换器板
EP3816557A1 (de) * 2019-10-31 2021-05-05 Danfoss A/S Wärmetauscherplatte
CN112747614A (zh) * 2019-10-31 2021-05-04 丹佛斯有限公司 热交换器板
US11781820B2 (en) 2019-10-31 2023-10-10 Danfoss A/S Heat exchanger plate

Also Published As

Publication number Publication date
IT9084935A0 (it) 1990-04-05
IT9084935A1 (it) 1991-10-05
IT1239317B (it) 1993-10-19

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