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WO2019141513A1 - Dispositif de tourbillonnement pour un échangeur de chaleur à plaques et échangeur de chaleur à plaques - Google Patents

Dispositif de tourbillonnement pour un échangeur de chaleur à plaques et échangeur de chaleur à plaques Download PDF

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Publication number
WO2019141513A1
WO2019141513A1 PCT/EP2019/025020 EP2019025020W WO2019141513A1 WO 2019141513 A1 WO2019141513 A1 WO 2019141513A1 EP 2019025020 W EP2019025020 W EP 2019025020W WO 2019141513 A1 WO2019141513 A1 WO 2019141513A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
plate heat
flow channel
swirling
fluid
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
PCT/EP2019/025020
Other languages
German (de)
English (en)
Inventor
Manfred Steinbauer
Axel Lehmacher
Alexander WOITALKA
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of WO2019141513A1 publication Critical patent/WO2019141513A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element

Definitions

  • the invention relates to a swirling device for a heat exchanger or heat exchanger, as well as a heat exchanger.
  • the invention is thus
  • heat exchangers such as plate heat exchangers.
  • Vacuum brazed plate heat exchangers are known in the art (plate fin heat exchanger, PFHE), which have various technical advantages, such as an advantageous compactness and / or heat integration and / or inexpensive to produce.
  • Such heat exchangers generally generally have a plurality of flow channels, which from a fluid to
  • the plurality of flow channels can be structurally separated from one another, for example, by means of separating plates or separating sheets ("seperator plates", “parting sheets”).
  • separating plates or separating sheets In each case a fin (English: “fin") is arranged between two adjacent partition plates, so that a plurality of parallel channels is formed between adjacent plates, which can be flowed through by a medium.
  • sidebars edge strips
  • a plurality of parallel heat transfer passages are formed so that media e.g. can be passed in countercurrent to each other to perform an indirect heat exchange.
  • the heat transfer of the fluid flowing through the flow channels can additionally be influenced by the heat exchanger and / or another fluid which is in contact with the heat exchanger.
  • the slats to an advantageous
  • Heat transfer between fluid and wall can be increased, as is the case for example with low pressure gas streams.
  • fins particularly cut fins
  • the use of fins, particularly cut fins also has the disadvantage that they typically significantly increase a pressure drop in the fluid flowing through the heat exchanger, the pressure loss typically being significant as the thermal expansion increases
  • the invention is therefore based on the object to provide and / or adapt a plate heat exchanger such that the efficiency of the plate heat exchanger can be increased without, however, to the same extent causing a concomitant pressure loss.
  • the invention relates to a swirling device for a plate heat exchanger, wherein the swirling device a
  • Verwirbelungsvorprung Having Verwirbelungsvorprung and is attachable to the plate heat exchanger such that the Verwirbelungsvorprung in and / or on a
  • Flow channel of the plate heat exchanger is arranged. It is the
  • the invention relates to a plate heat exchanger, which has at least one swirling device according to the invention.
  • Vortexing device may preferably be attached to the plate heat exchanger and / or integrated into the plate heat exchanger.
  • the invention relates to a plate heat exchanger having a flow channel, which is designed to be flowed through by a fluid in a flow direction downstream, as well as a
  • a swirl projection disposed in the flow channel and / or upstream of the flow channel and configured to swirl at least a portion of the fluid flowing over the swirl projection such that the fluid flows completely through the same flow channel downstream by performing at least one preferably spiral swirl movement downstream.
  • Plate heat exchanger is arranged, means that the
  • Verwirbelungsvorsprung can be formed within the flow channel, i. in an interior of the flow channel, which of a fluid to
  • Heat transfer can be flowed through, and / or outside of the
  • Flow channel can be arranged on the plate heat exchanger. If the swirl projection on the flow channel, i. outside the
  • Flow channel is arranged, it may be advantageous if it is arranged at a fluid inlet of the plate heat exchanger, through which the fluid can flow into the flow channel.
  • the fact that the fluid flows downstream through the flow channel while carrying out at least one spiral vortex movement means that the fluid does not only move in a straight line through the flow channel, but also has a component of movement which is perpendicular to a longitudinal axis of the flow channel which passes through the preferred flow direction the
  • Flow channel pretends extends.
  • the fact that the fluid flows completely through the entire flow channel while carrying out at least one vortex movement downstream means in particular that the entire fluid flowing through the flow channel while carrying out the at least one vortex movement flows through one and the same flow channel.
  • the heat exchanger and / or the swirling device is designed such that the entire flowing through the flow channel fluid or the fluid added in a vortex flow continues to flow through the flow channel, but not by the swirling device and / or through the
  • Vortex movement does not mind that the fluid flowing through the flow channel continues to flow through the flow channel until the fluid reaches the outlet of the flow channel.
  • the swirling device and / or the swirling protrusion and / or the swirling motion does not cause the fluid flowing through the flow channel to prematurely, i. before reaching the regular outlet of the flow channel, is led out of the flow channel and / or escaped.
  • the swirling device and / or the swirling protrusion are designed such that they have no openings and / or recesses and / or passages in the boundaries of the
  • Plate heat exchangers can continue to perform its function.
  • the invention also offers the advantage that the heat transfer from the fluid to the plate heat exchanger or vice versa can be improved without increasing the thermal contact surface by the fluid vortex movement caused by the flow channel.
  • the realization of plate heat exchangers are made possible, which allow a high degree of heat transfer and yet can be made compact.
  • the invention offers the advantage that the heat transfer from the fluid to the plate heat exchanger or vice versa can be increased without necessarily to the same extent a pressure drop of the by the
  • the invention allows to realize a heat transfer with efficient plate heat exchanger even with such lamellae, which cause a small pressure loss (compared to other lamellae, such as cut lamellae), however
  • the heat transfer can be significantly increased without significantly increasing the pressure loss, as for example the use of cut slats would be the case.
  • the invention is particularly advantageous for the heat transfer of low-pressure fluids, such as low-pressure gas streams, in which a large pressure loss or a significant reduction of the outlet pressure at the outlet of the plate heat exchanger can be particularly disadvantageous.
  • the invention offers the possibility to realize a plate heat exchanger with a high heat transfer coefficient while still minimizing the pressure loss occurring.
  • Another advantage of the invention is that it can realize a plate heat exchanger with particularly good effective performance parameter (English: Effective Performance Parameter, EPP), wherein the effective performance parameter by a ratio of
  • Performance parameter EEP is given by the following mathematical relationship:
  • the swirling device has a plurality of swirling projections, which are designed to swirl a fluid flowing into the flow channel.
  • the plurality of swirling projections can be arranged side by side, in particular perpendicular to the longitudinal axis of the flow channel and overlap with a cross-sectional area of a single flow channel. This offers the advantage that the degree of turbulence or an extent of the swirling movement of the fluid flowing through the flow channel can be increased.
  • the swirl projection forms a ramp which increases along the direction of flow relative to the flow channel.
  • the swirling device may preferably have a plurality of swirling projections and be attachable to a plate heat exchanger in such a way that the plurality of swirling protrusions are connected to a plurality of swirling protrusions
  • Flow channels of the plate heat exchanger are arranged.
  • a single swirling projection can be arranged on each flow channel and / or a plurality of channels can be arranged on each flow channel
  • Verwirbelungsvorsprünge be arranged.
  • the plate heat exchanger on a plurality of flow channels, wherein at least a portion of the flow channels each having at least one Verwirbelungsvorsprung.
  • These swirling projections can be arranged side by side.
  • a plurality of swirling projections can be arranged behind one another in a flow channel.
  • the at least one flow channel preferably has a plurality of swirling projections, wherein the plurality of swirling protrusions in the at least one flow channel are arranged downstream successively.
  • a longitudinal extent and / or a duration of the swirling movement of the fluid flowing through the flow channel can be increased or extended, and thus the heat transfer along the longitudinal axis of the flow channel can be increased.
  • the plurality can be arranged one behind the other
  • Verwirbelungsvorsprünge be arranged such that they cause and / or maintain a spiral movement of the fluid flowing through the flow channel and thus allow a particularly efficient heat transfer over preferably the entire length of the flow channel.
  • the swirling device is designed to be arranged and / or fastened to a fluid inlet of the plate heat exchanger.
  • This offers the advantage that a vortex movement is already caused before and / or at the entrance of the fluid into the flow channel or into the heat exchanger, and thus a high heat transfer coefficient can be achieved at the beginning of the heat transfer.
  • the plate heat exchanger preferably has at least one lamella.
  • the lamella is particularly preferably designed such that it spatially separates at least two flow channels, in particular flow channels adjoining one another, the lamella preferably being smooth and / or perforated and / or cut.
  • a plate heat exchanger which has smooth and / or perforated fins, be equipped with a swirling device, as this leads to a greater heat transfer with a particularly low pressure loss of the fluid flowing through the plate heat exchanger.
  • the at least one lamella of the plate heat exchanger can preferably have the at least one swirling projection.
  • the swirling projection can be designed, for example, as an integral part of the at least one lamella and / or attached thereto. Alternatively or additionally, the entire
  • Swirling device as a lamella and / or as a lamellar arrangement, which may for example comprise a plurality of fins, be formed.
  • This offers the advantage that the swirling device and / or the at least one Verwirbelungsvorsprung made in a particularly simple manner and / or can be integrated into the plate heat exchanger.
  • the at least one swirl projection protrudes at least 2 mm, more preferably at least 5 mm, even more preferably at least 1 cm, much more preferably at least 2 cm, most preferably at least 5 cm perpendicular to the longitudinal axis of the flow channel into the flow channel.
  • the at least one swirl projection extends in a direction perpendicular to the longitudinal axis of the flow channel over at least 5% of the width of the flow channel, more preferably at least 10% of the width of the flow channel, even more preferably at least 15% of the width of the flow channel, much more preferably at least 20 % of the width of the flow channel, much more preferably at least 25% of the width of the flow channel.
  • the at least one swirl projection extends in one
  • FIG. 1 shows schematically and in perspective a preferred embodiment of a plate heat exchanger according to the invention before (FIG. 1A) and after the attachment of inlet and outlet attachments (FIG. 1B).
  • FIG. 2 schematically shows a swirling device according to a first preferred embodiment.
  • FIG. 3 schematically shows a swirling device according to a second preferred embodiment.
  • FIG. 4 shows, in a schematic illustration, a lamination arrangement on which swirl projections are formed in a processing step.
  • Verwirbelungsvortechnische which are formed as a lamellar arrangement.
  • FIG. 7 shows a schematic representation of a swirling device according to a further preferred embodiment.
  • FIG. 1 shows a preferred embodiment of a device according to the invention
  • Plate heat exchanger shown schematically and in perspective and designated 1.
  • the plate heat exchanger 1 according to Figure 1 A has a cuboid
  • Central body 8 with a length of, for example, several meters and a width or height of, for example, about one or a few meters.
  • the central body 8 is an arrangement of alternating separating plates 9 and lamellae 2, 2a (so-called fins).
  • Plattentownauertragers 1 thus has a plurality of partition plates and a plurality of fins, wherein in each case a blade is arranged between two adjacent partition plates. Both the dividers and the fins may be made of aluminum, for example. On their sides, the slats 2, 2a by
  • Central body 8 are by a parallel to the slats and the separating plates lying cover 5 (cover plate) usually also made of aluminum
  • the plate heat exchanger 1 To produce the plate heat exchanger 1, the usually solder-plated partitions 9, edge strips 4 and slats (here only the slats 2 and 2a
  • the attachments 6 and 6a serve to distribute the fluid introduced through the connecting pieces 7 or to collect and concentrate the fluid to be taken from the plate heat exchanger 1, the distribution or collection via distributor fins 3 (cf. Figure 1 A) to or from the heat exchanger fins 2, 2a takes place.
  • the plate heat exchanger 1 shown in Figure 1 is designed to pass fluid streams in separate passages for heat exchange to each other. A part of the streams can be passed in opposite directions to each other, another part crosswise or in the same direction.
  • Plate heat exchanger 1 at least one swirling device, as will be explained in more detail below.
  • Each slat of the plate heat exchanger 1 separates Each of a plurality of flow channels from each other, which are each designed to be flowed through by a fluid downstream in a flow direction. In and / or at such flow channels is in each case a
  • FIG. 2 shows a swirling device 10 according to a first preferred embodiment as well as a material strip 12 from which the
  • Verwirbelungsvorides 10 can be produced.
  • the strip of material 12 can be present, for example, as a flat metal, which can be shaped for example by means of a stamping process to the swirling device 10.
  • the swirling device 10 has two swirling protrusions 14, which according to the preferred embodiment shown protrude from the plane of the previous material strip 12.
  • the swirling protrusions 14 serve to swirl a fluid flowing over the swirling device 10 so that the flowing fluid downstream of the swirling device 10 makes a swirling movement.
  • FIG. 3 shows a swirling device 10 according to a second preferred embodiment, which can be manufactured from a blank 12a.
  • Verwirbelungsvortechnisch 10 in contrast to the first preferred embodiment, a frame member 16 which has a rectangular cross-section.
  • the frame member 16 may be formed such that the swirling device 10 can be preferably arranged and secured to a heat exchanger so that the Verwirbelungsvorsprünge 14 at least partially overlap with inlet openings of a flow channel or of a plurality of flow channels of the heat exchanger.
  • the dimensions of the frame member 16 may be substantially equal to the dimensions of one side of the heat exchanger
  • the swirling protrusions 14 can be punched out of the blank 12a, for example by means of a stamping method, so that they extend into the interior of the frame element 16 which is produced during the stamping process.
  • FIG. 4 shows a schematic representation of a lamination arrangement 18, on which, in one processing step, swirling projections 14 are formed in order to obtain a swirling device 10.
  • the lamellar assembly 18 is designed as a planar component, which is folded meandering to
  • the fin assembly 18 may be disposed in a surrounding frame structure (not shown) which closes the channels 22 at the top and bottom and thus form flow channels disposed between the fins 20.
  • the swirling projections 14 can be punched out of the slat arrangement, for example by means of a stamping process, which then extend into the cross section of the channels 22, with the fluid flowing into a channel 22 or flow channel in one To put vertebrae motion.
  • Verwirbelungsvorsprünge 14 yet one or more openings in the
  • Verwirbelungsvorsprünge 14 are formed only at the top and bottom of the fin assembly 18, since they are already covered by a frame member in its arrangement in a heat exchanger and thus there is no risk of escape of fluid due to the formed Verwirbelungsvorsprünge 14 .
  • the vertical walls or Slats 20 no Verwirbelungsvorsprünge 14 formed, which would cause an opening in the fins 20 and would lead to a fluid connection of two adjacent flow channels.
  • FIGS. 5 and 6 show in schematic representations
  • Verwirbelungsvorezeen 10 which are formed as a lamellar assembly 18.
  • the turbulators 10 can be an integral part of the
  • the lamellar arrangement 18 has a plurality of lamellae 20, which extend in the vertical direction perpendicular to the longitudinal axis 102 of the flow channels 22 and adjacent
  • the lamellar arrangement 18 is designed to be flowed through by a fluid which flows along the flow direction 100 via the fluid inlets 24 into the flow channels 22. However, prior to the flow of the fluid, the flow channels 22, the fluid flows over the swirl projections 14, so that the fluid is not
  • FIG. 6 shows by way of example movement trajectories 104 along which
  • the fluid may move while flowing through the flow channels 22.
  • Lamellar assembly 18 and thus increased with the heat exchanger, but without causing a significantly increased pressure drop during the flow through the flow channels 22.
  • FIG. 7 shows, in a schematic representation, a swirling device 10 according to a further preferred embodiment, which comprises two in one
  • Verwirbelungsvorsprünge 14 has. These cause, preferably over the entire length of the flow channel 22, the swirling motion of the through

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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)

Abstract

L'invention concerne un dispositif de tourbillonnement (10) pour un échangeur de chaleur à plaques (1), le dispositif de tourbillonnement (10) comprenant une saillie de tourbillonnement (14) et pouvant être disposé sur l'échangeur de chaleur à plaques de telle manière que la saillie de tourbillonnement (14) est disposée dans et/ou sur un canal d'écoulement (22) de l'échangeur de chaleur à plaques. La saillie de tourbillonnement (14) est conçue pour tourbillonner un fluide s'écoulant dans le canal d'écoulement (22) de telle manière que le fluide s'écoule entièrement à travers le même canal d'écoulement (22) en effectuant au moins un mouvement tourbillonnaire vers l'aval. L'invention concerne en outre un échangeur de chaleur à plaques.
PCT/EP2019/025020 2018-01-22 2019-01-21 Dispositif de tourbillonnement pour un échangeur de chaleur à plaques et échangeur de chaleur à plaques Ceased WO2019141513A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018000464 2018-01-22
DE102018000464.4 2018-01-22

Publications (1)

Publication Number Publication Date
WO2019141513A1 true WO2019141513A1 (fr) 2019-07-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/025020 Ceased WO2019141513A1 (fr) 2018-01-22 2019-01-21 Dispositif de tourbillonnement pour un échangeur de chaleur à plaques et échangeur de chaleur à plaques

Country Status (1)

Country Link
WO (1) WO2019141513A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3789717A1 (fr) * 2019-09-06 2021-03-10 Hamilton Sundstrand Corporation Aube d'échangeur thermique dotée d'un modificateur d'écoulement d'air à mi-hauteur

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9406197U1 (de) * 1994-04-14 1994-06-16 Behr Gmbh & Co Wärmetauscher zum Kühlen von Abgas eines Kraftfahrzeugmotors
DE19828029A1 (de) * 1998-06-24 1999-12-30 Behr Gmbh & Co Wärmeübertrager
US20010032477A1 (en) * 2000-02-23 2001-10-25 Leslie Schlom Heat exchanger for cooling and for a pre-cooler for turbine intake air conditioning
US20050252644A1 (en) * 2002-07-24 2005-11-17 Wilfried Hofmann Heat-exchanging device
JP2007051804A (ja) * 2005-08-17 2007-03-01 T Rad Co Ltd プレート型熱交換器
US20090090486A1 (en) * 2006-03-16 2009-04-09 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
US20150021002A1 (en) * 2012-03-14 2015-01-22 Alfa Laval Corporate Ab Channel plate heat transfer system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9406197U1 (de) * 1994-04-14 1994-06-16 Behr Gmbh & Co Wärmetauscher zum Kühlen von Abgas eines Kraftfahrzeugmotors
DE19828029A1 (de) * 1998-06-24 1999-12-30 Behr Gmbh & Co Wärmeübertrager
US20010032477A1 (en) * 2000-02-23 2001-10-25 Leslie Schlom Heat exchanger for cooling and for a pre-cooler for turbine intake air conditioning
US20050252644A1 (en) * 2002-07-24 2005-11-17 Wilfried Hofmann Heat-exchanging device
JP2007051804A (ja) * 2005-08-17 2007-03-01 T Rad Co Ltd プレート型熱交換器
US20090090486A1 (en) * 2006-03-16 2009-04-09 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
US20150021002A1 (en) * 2012-03-14 2015-01-22 Alfa Laval Corporate Ab Channel plate heat transfer system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3789717A1 (fr) * 2019-09-06 2021-03-10 Hamilton Sundstrand Corporation Aube d'échangeur thermique dotée d'un modificateur d'écoulement d'air à mi-hauteur
US11209223B2 (en) 2019-09-06 2021-12-28 Hamilton Sundstrand Corporation Heat exchanger vane with partial height airflow modifier

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