US3807496A - Heat exchanger plate - Google Patents

Heat exchanger plate Download PDF

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Publication number
US3807496A
US3807496A US00295429A US29542972A US3807496A US 3807496 A US3807496 A US 3807496A US 00295429 A US00295429 A US 00295429A US 29542972 A US29542972 A US 29542972A US 3807496 A US3807496 A US 3807496A
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United States
Prior art keywords
plate
protuberances
plates
low
central plane
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Expired - Lifetime
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US00295429A
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English (en)
Inventor
N Stadmark
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Alfa Laval AB
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Alfa Laval AB
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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
    • F28F3/02—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

Definitions

  • the present invention relates to plate heat exchangers of the kind having a number of thin plates which are put together in a pack of plates and define, together with interposed edge gaskets, closed plate interspaces with inlets and outlets for two heat exchanging media. More particularly, the invention relates to a new plate for plate heat exchangers of this kind, which on both sides of its heat transferring portion has pressed protuberances intended to contact adjacent plates in a plate heat exchanger for serving as turbulence-effecting and spacing means in the plate interspaces.
  • Heat exchanging plates of this kind are provided with protuberances in their heat transferring portions for different reasons. Firstly, turbulence of the media flowing between the plates is desired. Secondly, an enlarged effective heat exchanging surface of each plate is desired. Thirdly, many support points are desired over the heat transferring portion of the plate, so that the plate material may be made as thin as possible with respect to the desired strength or. physical properties of the plate. Among other things, the plate must be able to resist a certain pressure difference between the heat exchanging media.
  • the plate must be made of thicker material in order not to become less capable of resisting pressure differences between the heat exchanging media. This means that the production costs are increased, among other things because special plates must be made for different needs.
  • An object of the present invention is to provide a construction for heat exchanging plates of the abovementioned kind, by means of which it is possible to satisfy both the need for a plate able to resist great pres- I sure differences between the heat exchanging media in a plate heat exchanger (i.e., a plate having several support points in the heat exchanging surface) and the need for a plate that can be effectively cleaned while it is assembled in a plate heat exchanger (i.e., a plate having few support points in the heat exchanging surface).
  • a heat exchanging plate having on at least one of its sides first protuberances distributed over the heat transferring portion and having a certain height above the central plane of the plate, and second protuberances distributed over the same portion among the said first protuberances and having less height above the central plane of the plate.
  • the different protuberances are so located in relation to each other that from a starting position in which the plate so contacts a similar plate that the plates cover each other, and only the highest protuberances of each plate abut the other in the operating interspace existing before the said deformation.
  • the same pressing tool may be used for the production of heat exchanging plates which are usable both in cases where great pressure differences between two heat exchanging media occur and in cases where effective and easy cleaning of the plates is required.
  • Plates produced according to the invention may be used in different manners. For example, when the plates are to be used with great pressure differences between the heat exchanging media, they are immediately so deformed in connection with their assembly in a heat exchanger that, the high as well as the low protuberances on the heat transferring portions of each plate willabut those of the adjacent plates. If the plates are not to be used later in cases where a smaller number of support points is desired between the plates, this deformation may be allowed to become permanent.
  • the plates in connection with their assembly may be arranged so that in operating position only the highest protuberances will abut the adjacent plates.
  • the need for onlya small number of support points on the heat exchanging surface is satisfied.
  • the plates in this arrangement also satisfy the requirement of resisting pressure differences between the two heat exchanging media, as the orily thingthat will happen at an increased pressure of one of the media is that in the low pressure interspaces the lower protuberances will also be brought into abutment against the adjacent plates. This will be obtained by deformation of the plate material.
  • the number of support points will then be so large in the low pressure interspaces that the increased pressure difference between the two heat exchanging media can be resisted by the plates without further deformation of the same.
  • the difference in height between the different kinds of protuberances in the plate should be very small, so that a deformation of the aforesaid kind will not be permanent.
  • edge gaskets of different thickness may be required.
  • the protuberances close to the edge gaskets should be placed so near each other that the same distance between the central planes of the respective platesis maintained at the edge gaskets in spite of the-increased medium pressure.
  • the highest protuberances on one side of the plate are so located in relation to the lower protuberances on the other side of the plate that an increased medium pressure against the said one side of the plate will move the highest protuberances on this side of the plate, by temporary deformation of the plate, in the direction towards the central plane of the plate, while the lower protuberances on the other side of the plate are moved in the direction away from this central plane.
  • a plate heat exchanger assembled from plates of this kind it is possible to obtain a very effective cleaning of the plates by introducing in every second plate interspace cleaning liquid under high pressure, so that all of the contact points between the plates are occasionally released in these plate interspaces. If desired, the rest of the plate interspaces may then be cleaned in the same way.
  • FIG. 1 is a side elevational view of a plate heat exchanger of the kind involved here;
  • FIG. 2 is a face view of one of the plates for the exchanger
  • FIG. 3 is a cross-sectional view of portions of three clamped together in a conventional manner in the frame.
  • the heat exchanging plates contacting each other in the heat exchanger, form together with interposed edge gaskets closed plate interspaces with inlets and outlets for two heat exchanging media.
  • FIG. 2 there is shown a heat exchanging plate 3 with an edge gasket 4.
  • Four holes 5-8 in the heat exchanging plate form the said inlets and outlets for the two heat exchanging media flowing to and from the respective plate interspaces formed in the plate heat exchanger on opposite sides of the illustrated plate 3.
  • the holes 5-8 are connected in a conventional manner with inlet and outlet studs 9 and 10 on the frame 1 of the heat exchanger (FIG. 1).
  • Each plate 3 is divided on each side into three different fields, namely, two so-called distribution surfaces I each other only at this point 17 in the parts of the plates shown in FIG. 4. If the pressure in every second interspace is then increased above a predetermined value (the pressure in the interspace between the plates 3b and 3c is assumed to be kept unchanged), all of the plates are so deformed that the somewhat higher ridges 14a on the low pressure side of each plate (see for instance the ridges 140 on the underneath side of the plate 3b in FIG. 3) are lowered, i.e., are pressed in the direction towards the central plane of the plate by the adjacent plate (for instance the plate in FIG. 3).
  • theover-pressure in every second plate interspace also exerts a deforming action directly on the plates defining the over-pressure interspaces.
  • the over-pressure between, for instance, the plates 3a and 3b causes the somewhat higher ridges 14a in this high pressure interspace to be brought out of contact with each-other,-the somewhat lower ridges 14b on the low pressure side of the plate-3b (the underneath side in FIG. 3) being simultaneously brought closer to the plate 3c.
  • the distribution surfaces 11 and 12 as well as the heat exchanging surface 13 are provided on both sides of the plate with protuberances in the form of ridges formed in the plate.
  • the ridges on one side of the plate are shown by full lines 14.
  • the ridges on the other side of the plate extend parallel to and between these lines 14.
  • the plates are preferably identical, but every second plate 3 is so arranged relative to the other plates that the ridges 14 of adjacent plates 3 cross each other in the interspaces formed by the plates.
  • FIG. 3 portions of three plates 30, 3b and 3c are shown.
  • the plate 3b on both sides has ridges of different height as measured from the central plane of the plate, this central plane being shown at 15.
  • the higher ridges 14a abut the adjacent plates 3a and 3c, respectively, while the lower ridges 14b are spaced from these adjacent plates.
  • the plates 3a and 3c have ridges 14a and 14b of different height, as can be seen from FIG. 3.
  • FIG. 2 there is shown a square 16, the area of which corresponds to that of the plate portions in FIG.
  • one ridge 14a on the underneath side of the plate 3b contacts or abuts a crossing ridge 14a on the plate 3c.
  • the position of this contact point 17 can be seen in FIG. 4.
  • the plates 3b and3c contact Due to this effect of a certain higher pressure in every second plate interspace than in the others in the plate heat exchanger, it can be achieved that in certain plate interspaces all the support between the plates is eliminated, while in the remaining plate interspaces the number of contact or support points increases substantially.
  • the number of contact points in a low pressure interspace may in this way become nine times greater than in a starting position, when substantially the same pressure is prevailing in all of the plate interspaces.
  • the parallel ridges on the upper side of plate 3b include two low ridges 14b extending between two high ridges 14a, and the groove between these two low ridges 14b forms the back (upper) side of a high ridge 14a on'the other (lower) side of the plate. Also, the slope from the crest of each ridge to the bottom of the valley between adjacent ridges is provided with a shoulder located in the central plane 15.
  • a heat exchanging plate adapted for use in a plate heat exchanger of the type having a pack of plates with marginal gaskets interposed between adjacent paired plates to define closed plate interspaces provided with inlets and outlets for flow of two heat exchanging media through respective interspaces, said plate having a central plane and also having a deformable heat transferring portion provided on each side of the plate with pressed protuberances integral with the plate and projecting away from said central plane for contact with an adjacent paired plate, said protuberances on at least one side of the plate including protuberances which are relatively high and protuberances which are relatively low as measured from said central plane, the low protuberances beingdistributed among the high protuberances over said heat transferring portion, the
  • paired plates being pairable with a similar plate to form paired plates having starting positions wherein only the high protuberances of one plate contact the protuberances of the other plate, the paired plates being deformable from their starting positions to bring the low protuberances of said one plate into contact with the protuberances of said other plate, whereby the paired plates form an interspace in which the plates contact each other at more points when thus deformed than when in their said starting positions.
  • a plate according to claim 1 in which both sides of the plate have said relatively high and low protuberances, said high protuberances on one side of the plate being so located relative to the low protuberances on the other side of the plate that an increased medium pressure on said one side of the plate temporarily deforms the plate to move the high protuberances on said one side in the direction toward said central plane of the plate, while the low protuberances on said other side are moved in the direction away from said central plane.
  • a plate according to claim 3 in which said ridges on each side of the plate include two low ridges extending between two high ridges.
  • a plate according to claim 4 in which said two low ridges on one side of the plate form between them a groove constituting the back side of a high ridge on the other side of the plate.
  • a plate according to claim 3 in which on one side of the plate a valley is formed between adjacent ridges, the slope between the crest of each of said adjacent ridges and the bottom of said valley being provided with a shoulder.
  • a pair of said plates each having a central plane and also having a deformable heat transferring portion provided on each side of the plate with pressed protuberances integral with the plate, the protuberances on each said side projecting away from the central plane of the plate and including protuberances which are relatively high and protuberances which are relatively low as measured from said central plane, the low protuberances being distributed among the high protuberances over said heat transferring portion, said paired plates having starting positions wherein only the high protuberances of one plate contact the protuberances of the starting positions.

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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)
US00295429A 1971-10-01 1972-10-06 Heat exchanger plate Expired - Lifetime US3807496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12428/71A SE365609B (pt) 1971-10-01 1971-10-01

Publications (1)

Publication Number Publication Date
US3807496A true US3807496A (en) 1974-04-30

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ID=20295709

Family Applications (1)

Application Number Title Priority Date Filing Date
US00295429A Expired - Lifetime US3807496A (en) 1971-10-01 1972-10-06 Heat exchanger plate

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US (1) US3807496A (pt)
CA (1) CA962260A (pt)
DE (1) DE2246114A1 (pt)
FR (1) FR2202271B1 (pt)
GB (1) GB1389704A (pt)
SE (1) SE365609B (pt)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931854A (en) * 1973-08-24 1976-01-13 Viktor Vasilievich Ivakhnenko Plate-type heat-exchange apparatus
US3984281A (en) * 1975-01-09 1976-10-05 Henry Balfour & Company Limited Plate type liquid heater and evaporator
US4374542A (en) * 1977-10-17 1983-02-22 Bradley Joel C Undulating prismoid modules
US4503908A (en) * 1979-10-01 1985-03-12 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4523638A (en) * 1979-10-01 1985-06-18 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
WO1985002670A1 (en) * 1983-12-08 1985-06-20 Alfa-Laval Thermal Ab Heat exchanger plate
US4630674A (en) * 1979-01-17 1986-12-23 Malte Skoog Invent Ab Plate heat exchanger
US4665975A (en) * 1984-07-25 1987-05-19 University Of Sydney Plate type heat exchanger
DE3622316C1 (de) * 1986-07-03 1988-01-28 Schmidt W Gmbh Co Kg Plattenwaermeaustauscher
US4749032A (en) * 1979-10-01 1988-06-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4815534A (en) * 1987-09-21 1989-03-28 Itt Standard, Itt Corporation Plate type heat exchanger
US4869317A (en) * 1987-10-20 1989-09-26 Rolls-Royce Plc Heat exchanger
US20110186274A1 (en) * 2008-08-28 2011-08-04 Sven Persson Plate heat exchanger
US20140090822A1 (en) * 2009-08-19 2014-04-03 Alstom Technology Ltd Heat transfer element for a rotary regenerative heat exchanger
US20170067695A1 (en) * 2014-03-07 2017-03-09 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchange plate used for plate-type heat exchanger and plate-type heat exchanger provided with the heat exchange plate
US20190101338A1 (en) * 2017-02-28 2019-04-04 General Electric Company Additively Manufactured Heat Exchanger
US10323883B2 (en) 2014-03-07 2019-06-18 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchange plate for plate-type heat exchanger and plate-type heat exchanger provided with said heat exchange plate
US10989486B2 (en) 2016-03-30 2021-04-27 Alfa Laval Corporate Ab Heat transfer plate and plate heat exchanger comprising a plurality of such heat transfer plates
RU216818U1 (ru) * 2023-01-19 2023-03-02 Артур Михайлович Силин Пластинчатый теплообменный аппарат

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534485A1 (fr) * 1982-10-19 1984-04-20 Hospal Ind Intercalaire pour appareil a membranes
FR2714456B1 (fr) * 1993-12-29 1996-01-12 Commissariat Energie Atomique Echangeur de chaleur à plaques améliorées.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2229306A (en) * 1937-08-05 1941-01-21 Prestage Edwin Plate-type heat-exchange apparatus
US3229763A (en) * 1963-07-16 1966-01-18 Rosenblad Corp Flexible plate heat exchangers with variable spacing
US3661203A (en) * 1969-11-21 1972-05-09 Parkson Corp Plates for directing the flow of fluids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2229306A (en) * 1937-08-05 1941-01-21 Prestage Edwin Plate-type heat-exchange apparatus
US3229763A (en) * 1963-07-16 1966-01-18 Rosenblad Corp Flexible plate heat exchangers with variable spacing
US3661203A (en) * 1969-11-21 1972-05-09 Parkson Corp Plates for directing the flow of fluids

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931854A (en) * 1973-08-24 1976-01-13 Viktor Vasilievich Ivakhnenko Plate-type heat-exchange apparatus
US3984281A (en) * 1975-01-09 1976-10-05 Henry Balfour & Company Limited Plate type liquid heater and evaporator
US4374542A (en) * 1977-10-17 1983-02-22 Bradley Joel C Undulating prismoid modules
US4630674A (en) * 1979-01-17 1986-12-23 Malte Skoog Invent Ab Plate heat exchanger
US4749032A (en) * 1979-10-01 1988-06-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4503908A (en) * 1979-10-01 1985-03-12 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4523638A (en) * 1979-10-01 1985-06-18 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
WO1985002670A1 (en) * 1983-12-08 1985-06-20 Alfa-Laval Thermal Ab Heat exchanger plate
US4665975A (en) * 1984-07-25 1987-05-19 University Of Sydney Plate type heat exchanger
US4781248A (en) * 1986-07-03 1988-11-01 W. Schmidt Gmbh & Co., K.G. Plate heat exchanger
DE3622316C1 (de) * 1986-07-03 1988-01-28 Schmidt W Gmbh Co Kg Plattenwaermeaustauscher
US4815534A (en) * 1987-09-21 1989-03-28 Itt Standard, Itt Corporation Plate type heat exchanger
US4869317A (en) * 1987-10-20 1989-09-26 Rolls-Royce Plc Heat exchanger
US20110186274A1 (en) * 2008-08-28 2011-08-04 Sven Persson Plate heat exchanger
US20140090822A1 (en) * 2009-08-19 2014-04-03 Alstom Technology Ltd Heat transfer element for a rotary regenerative heat exchanger
US9448015B2 (en) * 2009-08-19 2016-09-20 Arvos Technology Limited Heat transfer element for a rotary regenerative heat exchanger
US20170067695A1 (en) * 2014-03-07 2017-03-09 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchange plate used for plate-type heat exchanger and plate-type heat exchanger provided with the heat exchange plate
US10323883B2 (en) 2014-03-07 2019-06-18 Danfoss Micro Channel Heat Exchanger (Jiaxing) Co., Ltd. Heat exchange plate for plate-type heat exchanger and plate-type heat exchanger provided with said heat exchange plate
US10989486B2 (en) 2016-03-30 2021-04-27 Alfa Laval Corporate Ab Heat transfer plate and plate heat exchanger comprising a plurality of such heat transfer plates
US20190101338A1 (en) * 2017-02-28 2019-04-04 General Electric Company Additively Manufactured Heat Exchanger
US10502502B2 (en) * 2017-02-28 2019-12-10 General Electric Company Additively manufactured heat exchanger
US10830540B2 (en) 2017-02-28 2020-11-10 General Electric Company Additively manufactured heat exchanger
RU216818U1 (ru) * 2023-01-19 2023-03-02 Артур Михайлович Силин Пластинчатый теплообменный аппарат

Also Published As

Publication number Publication date
DE2246114A1 (de) 1973-04-26
GB1389704A (en) 1975-04-09
CA962260A (en) 1975-02-04
FR2202271A1 (pt) 1974-05-03
FR2202271B1 (pt) 1975-01-03
SE365609B (pt) 1974-03-25

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