EP0136481A2 - Rippenplatten-Wärmetauscher - Google Patents

Rippenplatten-Wärmetauscher Download PDF

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Publication number
EP0136481A2
EP0136481A2 EP84109442A EP84109442A EP0136481A2 EP 0136481 A2 EP0136481 A2 EP 0136481A2 EP 84109442 A EP84109442 A EP 84109442A EP 84109442 A EP84109442 A EP 84109442A EP 0136481 A2 EP0136481 A2 EP 0136481A2
Authority
EP
European Patent Office
Prior art keywords
plate
fins
manifold
plates
assembly
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.)
Withdrawn
Application number
EP84109442A
Other languages
English (en)
French (fr)
Other versions
EP0136481A3 (de
Inventor
William Richard Wagner
Irwin E. Rosman
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.)
Boeing North American Inc
Original Assignee
Rockwell International Corp
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 Rockwell International Corp filed Critical Rockwell International Corp
Publication of EP0136481A2 publication Critical patent/EP0136481A2/de
Publication of EP0136481A3 publication Critical patent/EP0136481A3/de
Withdrawn legal-status Critical Current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
    • F28F3/02—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
    • F28F3/048—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 ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • 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
    • F28D9/0062—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 spaced plates with inserted elements
    • F28D9/0075—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 spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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

  • This Invention relates to plate/fin-type heat exchangers and to open-faced finned plates which can be stacked to form cross-flow heat exchangers.
  • the plate/fin-type heat exchangers are mainly of the channel and rib-type construction. Countercurrent flow can be achieved; however, manifolding a plate stack which must separate the fluids at entry and exit becomes extremely complex. Since the manifolding of the crosscurrent heat exchangers is comparatively simple, this heat exchanger system is more widely used although it is less efficient than the countercurrent system and it induces serious thermal and mechanical stresses.
  • Campbell et al teach a heat exchanger having superposed stacked plate and fin elements and complex manifolding means for introducing fluids of different temperatures into opposite ends of the assembly.
  • Campbell et a1 do not teach a plate which serves as both the plate and the fin, nor does Campbell et al teach means for internally manifolding the plate within the plate's plane.
  • the Alfa-Laval concept consists mainly of a pack of thin metal plates, a frame and means of keeping the pieces together.
  • the plates are suspended between horizontal carrying bars at top and bottom and compressed against the stationary frame plate by means of tightening bolts and a movable pressure plate.
  • the frame plate is equipped with nozzles for inlet and outlet connections. Every plate 1s sealed around its perimeter with a gasket and cemented into a pressed track. Flow ports at each of the plate corners are individually gasketed and thus divide the interplate spaces into two systems of alternating flow channels.
  • the plate which 1s the basic element of this concept, has a corrugated pattern stamped on it. These corrugations can be arranged to create an unlimited number of plate patterns. The specific pattern results from a careful trade-off between pressure drop and convective heat transfer characteristics.
  • the gaskets In the Alfa-Laval system are cemented to the plates in pressed tracks, and are generally made of elastomers like natural rubber, nitrile, butyl, neoprene, vlton, etc.
  • the material selection depends upon the working conditions; however, the upper limits are about 360 PSI and about 400°F.
  • the present invention can be distinguished from that of Alfa-Laval in many ways, some of which include: (1) that the Alfa-Laval system requires gaskets which limit operating pressure and temperature; (2) that the Alfa-Laval system has no contact fins or essential flat plate bottoms for providing the plate-to-plate contact necessary to obtain the optimum heat transfer coefficient.
  • An object of the present invention is to provide a one-piece internally manifolded fin plate for a plate/fin-type heat exchanger.
  • Another object of the present invention is to provide an open-faced fin plate which incorporates a plurality of fin configurations for enhancement of heat transfer through increased surface area and plate-to-plate contact.
  • Still another object of the present invention is to provide a heat exchanger having simplified manifolds.
  • Yet a further object of the present invention is to provide a simple manifolding means for an internally manifolded plate stack.
  • Still another object of the present invention is to provide a cost efficient and effective crossflow heat exchanger.
  • Another object of the present invention 1s to provide a heat exchanger having plates relatively free from mechanical and thermal stresses.
  • Still another object of the present invention is to provide a heat exchanger which can be manufactured inexpensively.
  • the invention comprises a stacked plate/fin-type heat exchanger and two types of finned plates for use therein.
  • the first plate preferably employed for transferring liquids, is an open-faced plate with a flat bottom and a top formed with an upstanding peripheral wall. Upstanding spaced fins are formed In the central portion of the top side leaving concave end regions between the fin regions and the peripheral wall which are internal manifolds. Ports are formed transversely through the plate, one through each manifold region. The channels between the fins extend between the two manifold regions. The heights of the fins and peripheral wall are the same so that their top surfaces are an equiplanar surface.
  • the second plate preferably employed for transferring gases, is an open-faced plate with a flat bottom and spaced fins in the central portion of the top side thereof.
  • the end regions have top surfaces having the same height as the top surfaces of the fins so that an equiplanar surface is formed by the top surfaces of the fins and end regions.
  • a port is formed transversely through the plate In each end region so that, when the first and second plate are stacked, their manifold ports coincide to form an interior, or leader, manifold.
  • the plates have 180° complementarity, i.e., when a plate in the stack is azimuthally rotated 180° with respect to the others, its ports still coincide with the ports of the other stacks.
  • the top plate can be covered by a flat plate, the bottom of each plate acting as a cover for the plate below.
  • the plates may be bonded or gasketed, as desired.
  • the fins and channels of the second plate are formed In a direction crosswise to the direction of those on the first plate.
  • the invention provides an efficient, simple, easily manufactured, easily assembled, relatively inexpensive plate-stack heat exchanger which does not require external manifolding if a liquid is to be air-cooled therein.
  • Fig. 1 shows an exploded stack 10 of three plates 12, 14 and 12'. Two differently formed plates 12 and 14 are employed.
  • the first plate 12 is an open-faced plate formed with a flat bottom 16.
  • the top surface 17 of the plate 12 supports an upstanding peripheral wall 18 which has a height h 1 .
  • the central region of the first plate 12 supports a plurality of upstanding spaced fins 20, preferably parallel to each other, with channels 22 inbetween.
  • the end region between the ends of the fins 20 and the end peripheral wall 26 forms a depression, or concavity, which defines an interior manifold 24 through which a manifold port 28 1s drilled. As may be seen, there 1s a manifold 24 and manifold port 28 at each end of the plate 12.
  • the top surfaces of the fins 20 are also of height h 1 so that the top surfaces of the fins and the wall form a flat plane.
  • the channels 22 and fins 20 are formed so that their axes extend substantially in the same direction as a line drawn between the manifold ports 28.
  • the second plate 14 is also an open-faced plate formed with a flat bottom 34.
  • the height of the second plate 14 between the bottom 34 and the top surface 36 is h 2 ; preferably h 2 is greater than h 1 if first plate 12 is used for liquid flow, such as hot oil, and second plate 14 1s used for fluid flow, such as cooling air.
  • the central region of the second plate 14 also contains fins 20' and channels 22' the channels 22' extending downwardly from the top surface 36.
  • the fins 20' and channels 22' are contiguous to end regions 32, each of which is formed with a manifold port exteding transversely therethrough at such a location that, when the plates are stacked, the manifold ports 28,28' coincide to form internal manifolds in the stack.
  • the plates 12 and 14 can each be azimuthally rotated by 180° and the ports will still coincide. 180° complementarity can be retained even 1f each port in a plate is offset the same distance but in opposite direction from the longitudinal center line of the plate. This would, of course, have to be done with all plates 1n a stack.
  • first plate 38 is illustrated in Fig. 2.
  • the central region comprises fins 20" and channels 22", the two side fins 40 and 42 taking the place of the peripheral wall on each side of the plate 38.
  • the end regions are flat, the top surfaces 44 lying below the top surfaces 30 of the fins 20" and preferably in the plane of the bottom of the channels.
  • An end closure, or dike, member 46 roughly U-shaped, is placed upon the surface 44 of each end region to mate at both ends with the corresponding ends of the side fins 40 and 42 to form an embankment therewith around the periphery of the plate 38; an internal manifold 24' is formed thereby at each end region.
  • Manifold ports 28" are formed In the internal manifold region of each plate 38 to coincide with the manifold ports 28'of the second plate 14 when the two are stacked.
  • the dike members 46 are bonded, or otherwise sealed, to the .end regions to form an end closure.
  • the bottom of the second plates 14 should also be sealed to the top of the underlying first plates 12 (or 38) to prevent leakage of the fluid flowing through the channels 22" and internal manifolds 24' of the first plates 12 (or 38). This may be done, for example, by brazing in a brazing die with plate-to-plate brazing foils, or with gaskets. Sealing between the bottoms of the first plates 12 and the tops of the second plates 14 may be unnecessary 1f the second plates 14 are used to transfer a gas but might be desired for stability of the stack 10.
  • the first plates may be below the second plates.
  • the first plate 12 (Fig.1) may be formed, for example, by an impact extrusion process In which the forming die presses the flat plate so that the fins and peripheral wall, or frame are extruded into the channels of the die.
  • the second plate 14 may be formed by an extrusion process In which the forming die simply extrudes the channels and fins of the central region.
  • the dike-member plate 38 may be formed by extruding the fins over the whole area of the basic plate and then machining off the fins on the end regions of the plate to provide the end surfaces to which the dike members can be fitted to form end closures.
  • Fig. 3 shows a simple plate which can be used as a cover plate 48 for the stack 10.
  • the cover plate 48 can be bonded or bolted to the stack 10.
  • the cover plate and a similar bottom plate may provide outwardly extended surfaces with bolt hole or notches to bolt together the complete stack assembly.
  • the top plate or bottom plate or both can provide inlet and outlet conduits for the plate stack assembly.
  • the fins 20,20' and channels 22,22' can have variously shaped cross-sections as shown In Fig. 4.
  • the conventional channel and fin shape with sharp corners is represented by numeral 50.
  • channels with rounded corners 52, U-shaped channels 54, V-shaped channels 56, trapezoidal channels 58, etc. are also within the scope of the invention, as well as interrupted fins 60, for example, as shown In Fig. 5.
  • the channels may also be of different widths on the same plate.
  • the fins 20,20' can also be of serpentine shape 62 (Fig.6) or other non-linear configuration, as shown in the herringbone configuration of Fig. 7.
EP84109442A 1983-10-03 1984-08-08 Rippenplatten-Wärmetauscher Withdrawn EP0136481A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53824883A 1983-10-03 1983-10-03
US538248 2000-03-29

Publications (2)

Publication Number Publication Date
EP0136481A2 true EP0136481A2 (de) 1985-04-10
EP0136481A3 EP0136481A3 (de) 1986-02-26

Family

ID=24146114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109442A Withdrawn EP0136481A3 (de) 1983-10-03 1984-08-08 Rippenplatten-Wärmetauscher

Country Status (4)

Country Link
EP (1) EP0136481A3 (de)
JP (1) JPS6096891A (de)
DK (1) DK442284A (de)
NO (1) NO843967L (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183008A1 (de) * 1984-10-31 1986-06-04 Rockwell International Corporation Plattenwärmetauscher
EP0212878A1 (de) * 1985-08-08 1987-03-04 Heatric Pty. Limited Kreuzstromplattenwärmetauscher
FR2595981A1 (fr) * 1986-03-20 1987-09-25 Roehm Gmbh Empilement de plaques en matiere thermoplastique soudable
WO1996038700A1 (en) * 1995-05-29 1996-12-05 Long Manufacturing Ltd. Plate heat exchanger with improved undulating passageway
FR2755217A1 (fr) * 1996-10-28 1998-04-30 Valeo Climatisation Evaporateur a plaques empilees perfectionnees pour installation de climatisation, notamment de vehicule automobile
WO2001069157A2 (de) * 2000-03-16 2001-09-20 Robert Bosch Gmbh Wärmeübertrager für eine co2-fahrzeugklimaanlage
EP1757887A1 (de) * 2005-08-25 2007-02-28 Sgl Carbon Ag Wärmetauscherblock
WO2008108724A3 (en) * 2007-03-07 2008-11-06 Airec Ab Heat exchanger of crossflow type
US7637112B2 (en) 2006-12-14 2009-12-29 Uop Llc Heat exchanger design for natural gas liquefaction
US20140262175A1 (en) * 2013-03-15 2014-09-18 Dana Canada Corporation Heat Exchanger with Jointed Frame
CN104748605A (zh) * 2015-03-25 2015-07-01 华南理工大学 一种电场强化纳米流体相变传热紧凑式多层微通道换热器
EP4303519A1 (de) * 2022-07-08 2024-01-10 Stig Gregersen Gas-flüssigkeits-plattenwärmetauscher und verfahren zu dessen montage

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE216789C (de) *
FR437925A (fr) * 1910-12-28 1912-05-03 Unit Engineering Company Ltd Appareil pour chauffer et refroidir les liquides, et pour d'autres usages similaires
GB732637A (en) * 1952-10-30 1955-06-29 Machf Bolnes Voorheen J H Van Improvements in or relating to plate heat exchangers
FR1345815A (fr) * 1962-12-01 1963-12-13 Parsons C A & Co Ltd échangeur de chaleur
GB1178113A (en) * 1965-11-23 1970-01-21 Rootes Motors Ltd Improvements in or relating to Heat Exchangers
FR95666E (fr) * 1966-01-22 1971-04-16 Snecma Perfectionnements aux échangeurs a plaques.
DE2109346A1 (de) * 1970-03-20 1971-10-14 Apv Co Ltd Platte fur Plattenwärmetauscher und Werkzeug zu seiner Herstellung
FR2132666A1 (de) * 1971-04-08 1972-11-24 Leybold Heraeus Verwaltung
US4347896A (en) * 1979-10-01 1982-09-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE216789C (de) *
FR437925A (fr) * 1910-12-28 1912-05-03 Unit Engineering Company Ltd Appareil pour chauffer et refroidir les liquides, et pour d'autres usages similaires
GB732637A (en) * 1952-10-30 1955-06-29 Machf Bolnes Voorheen J H Van Improvements in or relating to plate heat exchangers
FR1345815A (fr) * 1962-12-01 1963-12-13 Parsons C A & Co Ltd échangeur de chaleur
GB1178113A (en) * 1965-11-23 1970-01-21 Rootes Motors Ltd Improvements in or relating to Heat Exchangers
FR95666E (fr) * 1966-01-22 1971-04-16 Snecma Perfectionnements aux échangeurs a plaques.
DE2109346A1 (de) * 1970-03-20 1971-10-14 Apv Co Ltd Platte fur Plattenwärmetauscher und Werkzeug zu seiner Herstellung
FR2132666A1 (de) * 1971-04-08 1972-11-24 Leybold Heraeus Verwaltung
US4347896A (en) * 1979-10-01 1982-09-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183008A1 (de) * 1984-10-31 1986-06-04 Rockwell International Corporation Plattenwärmetauscher
EP0212878A1 (de) * 1985-08-08 1987-03-04 Heatric Pty. Limited Kreuzstromplattenwärmetauscher
FR2595981A1 (fr) * 1986-03-20 1987-09-25 Roehm Gmbh Empilement de plaques en matiere thermoplastique soudable
WO1996038700A1 (en) * 1995-05-29 1996-12-05 Long Manufacturing Ltd. Plate heat exchanger with improved undulating passageway
AU693694B2 (en) * 1995-05-29 1998-07-02 Long Manufacturing Ltd. Plate heat exchanger with improved undulating passageway
FR2755217A1 (fr) * 1996-10-28 1998-04-30 Valeo Climatisation Evaporateur a plaques empilees perfectionnees pour installation de climatisation, notamment de vehicule automobile
WO2001069157A2 (de) * 2000-03-16 2001-09-20 Robert Bosch Gmbh Wärmeübertrager für eine co2-fahrzeugklimaanlage
WO2001069157A3 (de) * 2000-03-16 2002-10-31 Bosch Gmbh Robert Wärmeübertrager für eine co2-fahrzeugklimaanlage
EP1757887A1 (de) * 2005-08-25 2007-02-28 Sgl Carbon Ag Wärmetauscherblock
US7549464B2 (en) 2005-08-25 2009-06-23 Sgl Carbon Ag Heat exchanger block
US7637112B2 (en) 2006-12-14 2009-12-29 Uop Llc Heat exchanger design for natural gas liquefaction
WO2008108724A3 (en) * 2007-03-07 2008-11-06 Airec Ab Heat exchanger of crossflow type
US20140262175A1 (en) * 2013-03-15 2014-09-18 Dana Canada Corporation Heat Exchanger with Jointed Frame
US10458725B2 (en) * 2013-03-15 2019-10-29 Dana Canada Corporation Heat exchanger with jointed frame
CN104748605A (zh) * 2015-03-25 2015-07-01 华南理工大学 一种电场强化纳米流体相变传热紧凑式多层微通道换热器
CN104748605B (zh) * 2015-03-25 2017-03-01 华南理工大学 一种电场强化纳米流体相变传热紧凑式多层微通道换热器
EP4303519A1 (de) * 2022-07-08 2024-01-10 Stig Gregersen Gas-flüssigkeits-plattenwärmetauscher und verfahren zu dessen montage

Also Published As

Publication number Publication date
DK442284A (da) 1985-04-04
DK442284D0 (da) 1984-09-17
NO843967L (no) 1985-04-09
EP0136481A3 (de) 1986-02-26
JPS6096891A (ja) 1985-05-30

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Inventor name: WAGNER, WILLIAM RICHARD

Inventor name: ROSMAN, IRWIN E.