WO1999049271A2 - Plaque d'echangeur de chaleur presentant des passages de chaleur de longueur variable - Google Patents

Plaque d'echangeur de chaleur presentant des passages de chaleur de longueur variable Download PDF

Info

Publication number
WO1999049271A2
WO1999049271A2 PCT/IL1999/000168 IL9900168W WO9949271A2 WO 1999049271 A2 WO1999049271 A2 WO 1999049271A2 IL 9900168 W IL9900168 W IL 9900168W WO 9949271 A2 WO9949271 A2 WO 9949271A2
Authority
WO
WIPO (PCT)
Prior art keywords
plate
zone
flat plate
sub
length
Prior art date
Application number
PCT/IL1999/000168
Other languages
English (en)
Other versions
WO1999049271A3 (fr
Inventor
Pessach Seidel
Original Assignee
Pessach Seidel
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 Pessach Seidel filed Critical Pessach Seidel
Priority to AU30511/99A priority Critical patent/AU3051199A/en
Publication of WO1999049271A2 publication Critical patent/WO1999049271A2/fr
Publication of WO1999049271A3 publication Critical patent/WO1999049271A3/fr

Links

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
    • 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
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into 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
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities

Definitions

  • the present invention relates to flat plate heat exchangers generally, and to plates used therein, in particular.
  • a drawback of this approach is the fact that, while it is possible to obtain desired overall heat exchange properties by constructing a system in this manner, this is due to the fact that some flow passages have long thermal paths, and other portions have short thermal paths. This mixture of long and short thermal paths may give rise to "hot regions," whereat the temperature of the medium to be cooled may become elevated to the extent that undesirable, heat-related chemical processes occur, potentially damaging the system, such as by allowing the deposition of, for example, CaC02 on the plates, or damaging the medium to be cooled which often is an organic product, such as milk or fruit juice, undergoing pasteurization.
  • the present invention seeks to provide a plate for use in a flat plate heat exchanger, which is constructed so as to provide intra-plate flow passages, each divided into portions of different thermal lengths, thereby allowing a desired varying of the thermal lengths of flow passages within the stack, but preventing the occurrence of hot regions therewithin.
  • a variable thermal length flat plate for mounting in a stack of flat plates of a fiat plate heat exchanger, wherein the flat plates are sealed together so as to define alternating heat exchanging fluid flow passages therebetween.
  • variable thermal length flat plate is arranged for mounting in the stack, and is characterized by having a heat transfer zone which is formed so as to have a varying thermal length.
  • the heat transfer zone has formed thereon a plurality of contiguous sub-zones, each sub-zone having a specific thermal length different to that of the adjacent sub-zone.
  • each sub-zone has a plurality of corrugations, wherein the corrugations in each zone have different predetermined spatial distributions, including orientation, and density of the corrugations.
  • Figs. 1A and 1 B are pictorial illustrations of variable thermal length plates useful in a flat plate heat exchanger, formed in accordance with a preferred embodiment of the present invention, having similar physical dimensions but differing thermal lengths;
  • Fig. 2 is a pictorial illustration of an additional variable thermal length plate, also formed in accordance with a preferred embodiment of the present invention, and having physical dimensions and thermal lengths different to those depicted in Figs. 1 and 2.
  • Fig. 1A there is seen a variable thermal length plate, referenced generally 10, useful in a flat plate heat exchanger.
  • the heat exchanger, per se, is well known in the art, and is thus not shown or described herein.
  • Plate 10 is typically rectangular, and has first and second ends 12 and 14, bisected by a longitudinal axis 15. There may be provided any suitable type of recesses or openings 17, at one or both ends of the plate, thereby to enable any suitable type of mounting, as known in the art.
  • the plate 10 has a physical length L and a physical width W.
  • Plate 10 is formed with a first pair of openings I and II, at first end 12, and a second pair of openings III and IV, at second end 14. Any of the openings l-IV may function as a fluid inlet or outlet, depending on the precise positioning of the plate within a stack of such plates, in a heat exchanger.
  • each plate is sealed together with an adjacent plate, thereby to define a fluid flow passage therewith, into which fluid is supplied via a preselected one of the openings I and II, and from which fluid exits via another one of the openings III and IV.
  • the sealing between the plates so as to define the fluid passages may be performed by any suitable means known in the art.
  • plate 10 has impressed therein a gasket track 18, which seats a suitable rubber gasket (not shown).
  • the heat transfer zone of plate 10 is referenced generally 16, and is provided with corrugations, such as ridges 11 and grooves 13, thereby to increase turbulence as a heat exchanging fluid flows along the plate within a fluid flow passage.
  • the plate 10 itself - through which heat transfer occurs - is described herein also as having a thermal length.
  • the plate 10 of the present invention is characterized by having a variable thermal length, by virtue of zone 16 having various heat transfer sub-zones, each of which has a heat transfer length which depends on the geometric arrangement of corrugations therein.
  • the different configurations of the various sub-zones shown and described below may be provided by any suitable multi-pass method of pressing, or by providing a press with interchangeable plates, or by any other suitable method, and is beyond the scope of the present invention.
  • each sub-zone corresponds to the resistance to flow provided by the ridges 11 and grooves 13 therein, and is thus a function of the orientation of the ridges 11 with respect to longitudinal axis 15, the spacing or density of the ridges 11 , and the physical length of the sub-zone.
  • the "thermal length" of each sub-zone is defined as the absolute thermal length of the sub-zone.
  • each sub-zone is characterized by its "specific thermal length,” which is the thermal length per unit of physical length. It is thus seen, by way of example only, that, heat transfer zone 16 of plate
  • each sub-zone 10 has five sub-zones, referenced 16a-16e, respectively, in which the angle between the ridges 11 in each sub-zone, and axis 15, is denoted by ⁇ .
  • the specific thermal length of each sub-zone is thus defined by the density of the ridges 11 and angle ⁇ , it being apparent that, in the present example, the sub-zone with the longest specific thermal length is sub-zone 16e, while 16b has the shortest specific thermal length.
  • a plate 10' which is similar to plate 10 of Fig. 1A in terms of general configuration and physical length and width dimensions, and which is thus described only in terms of the differences with respect to plate 10. All portions of plate 10' having counterpart portions in plate 10, are indicated by similar reference numerals, but with a prime (') suffix.
  • heat transfer zone 16' of plate 10' is divided into four regions, respectively referenced 16a'-16d', wherein, the sub-zone with the longest specific thermal length is sub-zone 16b', while 16a' and 16d' have the shortest specific thermal lengths.
  • the two plates 10 and 10' it is clear that, while their physical dimensions are the same, the two plates have different thermal lengths, due to the differences between them with regard to the variations in the spatial distribution of the ridges and grooves, i.e. with regard to their orientation and density.
  • a heat transfer plate referenced generally 30, which is generally similar to those of Figs. 1A and 1 B, and which is thus not described again herein, in detail.
  • plate 30 defines a heat transfer zone 36 which is divided into four exemplary sub-zones, 36a-36d, each having a different specific thermal length in relation to the adjacent sub-zone.
  • the overall thermal length of the plate is also determined in accordance with the overall physical dimensions of the plate. This is illustrated by the longitudinal and lateral breaks in plate 30, respectively indicated by double-headed arrows 38 and 40.
  • the present invention provides a heat exchange plate for use in a flat plate heat exchanger, wherein the plate stack may have a plurality of plates which have different, predetermined thermal lengths, thereby to obtain a heat exchanger with predetermined heat exchange characteristics.
  • the prior art approach involves selecting a plurality of plates, each of which has a predetermined thermal length, but which, of necessity, thus gives rise to hot regions in the heat exchanger.
  • the present invention facilitates a heat exchanger in which a required variance in the thermal lengths of plates is achieved by the provision of plates, and thus flow passages, along which the specific thermal length varies in a predetermined manner.
  • each plate and flow passage with long thermal lengths thus extend only along a portion of each plate and flow passage
  • use of the present invention generally avoids the occurrence of hot regions within the heat exchanger, thereby prolonging the life of the heat exchanger, thereby ensuring high performance over an extended life, as well as avoiding possible damage to the fluid medium being cooled.

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)

Abstract

Plaque d'échangeur de chaleur présentant des passages de chaleur de longueur variable et destinée à être montée dans un empilement de plaques d'échangeur de chaleur, ces plaques étant scellées les unes aux autres de manière à définir entre elles des passages alternés d'écoulement de liquide d'échange de chaleur. Cette plaque est destinée à être montée dans l'empilement et possède une zone caractéristique de transfert de chaleur conçue de façon à présenter une longueur thermique variable.
PCT/IL1999/000168 1998-03-26 1999-03-24 Plaque d'echangeur de chaleur presentant des passages de chaleur de longueur variable WO1999049271A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30511/99A AU3051199A (en) 1998-03-26 1999-03-24 Variable thermal length flat plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL123850 1998-03-26
IL12385098A IL123850A0 (en) 1998-03-26 1998-03-26 Variable thermal length flat plate

Publications (2)

Publication Number Publication Date
WO1999049271A2 true WO1999049271A2 (fr) 1999-09-30
WO1999049271A3 WO1999049271A3 (fr) 1999-12-09

Family

ID=11071379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1999/000168 WO1999049271A2 (fr) 1998-03-26 1999-03-24 Plaque d'echangeur de chaleur presentant des passages de chaleur de longueur variable

Country Status (3)

Country Link
AU (1) AU3051199A (fr)
IL (1) IL123850A0 (fr)
WO (1) WO1999049271A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1091185A3 (fr) * 1999-10-07 2003-06-04 Ballard Power Systems AG Echangeur de chaleur à plaques
EP1722184A2 (fr) * 2005-05-09 2006-11-15 DHP Engineering Co., Ltd., Dispositif de liaison d'un joint avec une plaque de transfert de chaleur pour échangeur de chaleur à plaques
WO2007004939A1 (fr) 2005-07-04 2007-01-11 Alfa Laval Corporate Ab Plaque d’échange thermique, paire de deux plaques d’échange thermique et ensemble de plaques pour échangeur thermique à plaques
WO2009154543A1 (fr) * 2008-06-17 2009-12-23 Alfa Laval Corporate Ab Échangeur de chaleur
EP2728292A1 (fr) * 2012-10-30 2014-05-07 Alfa Laval Corporate AB Plaque de transfert de chaleur et échangeur de chaleur à plaques comprenant une telle plaque de transfert de chaleur
JP2016539305A (ja) * 2013-12-05 2016-12-15 スウェップ インターナショナル アクティエボラーグ 種々のピッチを有する熱交換プレート
TWI689699B (zh) * 2017-10-05 2020-04-01 瑞典商阿爾法拉瓦公司 傳熱板以及用於熱交換器之包含此傳熱板的板組件

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872165A (en) * 1954-09-04 1959-02-03 Separator Ab Plate type heat exchanger
US5174370A (en) * 1990-04-17 1992-12-29 Alfa-Laval Thermal Ab Plate evaporator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872165A (en) * 1954-09-04 1959-02-03 Separator Ab Plate type heat exchanger
US5174370A (en) * 1990-04-17 1992-12-29 Alfa-Laval Thermal Ab Plate evaporator

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1091185A3 (fr) * 1999-10-07 2003-06-04 Ballard Power Systems AG Echangeur de chaleur à plaques
EP1722184A2 (fr) * 2005-05-09 2006-11-15 DHP Engineering Co., Ltd., Dispositif de liaison d'un joint avec une plaque de transfert de chaleur pour échangeur de chaleur à plaques
EP1722184A3 (fr) * 2005-05-09 2012-08-01 DHP Engineering Co., Ltd., Dispositif de liaison d'un joint avec une plaque de transfert de chaleur pour échangeur de chaleur à plaques
WO2007004939A1 (fr) 2005-07-04 2007-01-11 Alfa Laval Corporate Ab Plaque d’échange thermique, paire de deux plaques d’échange thermique et ensemble de plaques pour échangeur thermique à plaques
EP1899671A1 (fr) * 2005-07-04 2008-03-19 Alfa Laval Corporate AB Plaque d échange thermique, paire de deux plaques d échange thermique et ensemble de plaques pour échangeur thermique à plaques
EP1899671B1 (fr) * 2005-07-04 2016-12-14 Alfa Laval Corporate AB Plaque d échange thermique et ensemble de plaques pour échangeur thermique à plaques
US8746329B2 (en) 2005-07-04 2014-06-10 Alfa Laval Corporate Ab Heat exchanger plate, a pair of two heat exchanger plates, and plate package for a plate heat exchanger
WO2009154543A1 (fr) * 2008-06-17 2009-12-23 Alfa Laval Corporate Ab Échangeur de chaleur
EP2304369B1 (fr) * 2008-06-17 2018-11-14 Alfa Laval Corporate AB Echangeur de chaleur
US9518782B2 (en) 2008-06-17 2016-12-13 Alfa Laval Corporated Ab Heat exchanger
AU2013339691B2 (en) * 2012-10-30 2016-04-21 Alfa Laval Corporate Ab Heat transfer plate and plate heat exchanger comprising such a heat transfer plate
RU2598982C1 (ru) * 2012-10-30 2016-10-10 Альфа Лаваль Корпорейт Аб Теплопередающая пластина и пластинчатый теплообменник, содержащий такую теплопередающую пластину
JP2015536437A (ja) * 2012-10-30 2015-12-21 アルファ−ラヴァル・コーポレート・アーベー 伝熱平板及びそのような伝熱平板を備える平板熱交換器
WO2014067757A1 (fr) * 2012-10-30 2014-05-08 Alfa Laval Corporate Ab Plaque de transfert de chaleur et échangeur de chaleur à plaque comprenant ladite plaque de transfert de chaleur
KR20170024164A (ko) * 2012-10-30 2017-03-06 알파 라발 코포레이트 에이비 열 전달 플레이트 및 이러한 열 전달 플레이트를 포함하는 플레이트 열교환기
US9739542B2 (en) 2012-10-30 2017-08-22 Alfa Laval Corporate Ab Heat transfer plate and plate heat exchanger comprising such a heat transfer plate
EP2728292A1 (fr) * 2012-10-30 2014-05-07 Alfa Laval Corporate AB Plaque de transfert de chaleur et échangeur de chaleur à plaques comprenant une telle plaque de transfert de chaleur
KR102017959B1 (ko) 2012-10-30 2019-09-03 알파 라발 코포레이트 에이비 열 전달 플레이트 및 이러한 열 전달 플레이트를 포함하는 플레이트 열교환기
JP2016539305A (ja) * 2013-12-05 2016-12-15 スウェップ インターナショナル アクティエボラーグ 種々のピッチを有する熱交換プレート
TWI689699B (zh) * 2017-10-05 2020-04-01 瑞典商阿爾法拉瓦公司 傳熱板以及用於熱交換器之包含此傳熱板的板組件
US11774191B2 (en) 2017-10-05 2023-10-03 Alfa Laval Corporate Ab Heat transfer plate and a plate pack for a heat exchanger comprising a plurality of such heat transfer plates

Also Published As

Publication number Publication date
IL123850A0 (en) 1998-10-30
WO1999049271A3 (fr) 1999-12-09
AU3051199A (en) 1999-10-18

Similar Documents

Publication Publication Date Title
US4815534A (en) Plate type heat exchanger
US5540276A (en) Finned tube heat exchanger and method of manufacture
US6273183B1 (en) Heat exchanger turbulizers with interrupted convolutions
US11754341B2 (en) Heat exchanger
EP0611941B1 (fr) Echangeur de chaleur à plaques et plaques correspondantes
US4376460A (en) Plate heat exchanger
CA1097335A (fr) Echangeur de chaleur a raccords internes
EP0636239B1 (fr) Echangeur de chaleur a plaques
JP5553836B2 (ja) 熱交換器
EP0094954A1 (fr) Plaque d'echangeur de chaleur.
ES2127472T3 (es) Intercambiador de calor duplex de tipo apilado.
EP0047073A2 (fr) Echangeur de chaleur à plaques
JP3100371B1 (ja) 蒸発器
GB2025026A (en) Plate heat exchanger
WO1999049271A2 (fr) Plaque d'echangeur de chaleur presentant des passages de chaleur de longueur variable
US4844151A (en) Heat exchanger apparatus
US9068780B2 (en) Twist vane counter-parallel flow heat exchanger apparatus and method
JPS59229193A (ja) 熱交換器
WO2009131668A2 (fr) Ensemble radiateur refroidi à l’air pour un équipement électrique rempli d’huile
JP3749436B2 (ja) 中断された回旋を具えた熱交換器用乱流化装置
US5121792A (en) Countercurrent heat-exchanger
KR100228503B1 (ko) 적층형 열교환기용 튜브엘리멘트
GB2066938A (en) Plate heat exchanger
EP3598053B1 (fr) Échangeur de chaleur à plaques
US3608629A (en) Flow compensator for exchanger apparatus

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase