EP4365532A1 - Plaque d'échangeur de chaleur et échangeur de chaleur à plaques - Google Patents

Plaque d'échangeur de chaleur et échangeur de chaleur à plaques Download PDF

Info

Publication number
EP4365532A1
EP4365532A1 EP22204918.1A EP22204918A EP4365532A1 EP 4365532 A1 EP4365532 A1 EP 4365532A1 EP 22204918 A EP22204918 A EP 22204918A EP 4365532 A1 EP4365532 A1 EP 4365532A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate
porthole
valleys
ridges
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.)
Pending
Application number
EP22204918.1A
Other languages
German (de)
English (en)
Inventor
Tobias HÖRTE
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.)
Alfa Laval Corporate AB
Original Assignee
Alfa Laval Corporate AB
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 Alfa Laval Corporate AB filed Critical Alfa Laval Corporate AB
Priority to EP22204918.1A priority Critical patent/EP4365532A1/fr
Priority to PCT/EP2023/079079 priority patent/WO2024094432A1/fr
Publication of EP4365532A1 publication Critical patent/EP4365532A1/fr
Pending legal-status Critical Current

Links

Images

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
    • F28D9/0031—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 paired plates touching each other
    • F28D9/0043—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 paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—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 paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • 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
    • 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
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box

Definitions

  • the present invention refers to a heat exchanger plate according to the preamble of claim 1.
  • the invention also refers to a plate heat exchanger according to the preamble of claim 10.
  • Plate heat exchangers typically consist of two end plates in between which a number of heat transfer plates are arranged in a stack or pack.
  • the heat transfer plates of a PHE may be of the same or different types and they may be stacked in different ways.
  • the heat transfer plates are stacked with the front side and the back side of one heat transfer plate facing the front side and back side, respectively, of other heat transfer plates, and every other heat transfer plate turned upside down in relation to the rest of the heat transfer plates. Typically, this is referred to as the heat transfer plates being "flipped" in relation to each other.
  • the heat transfer plates are stacked with the front side and the back side of one heat transfer plate facing the back side and the front side, respectively. Typically, this is referred to as the heat transfer plates being "rotated" in relation to each other.
  • the heat carrying media flowing around the closed porthole area meets a high flow resistance when entering the heat exchanger area.
  • This may be due to the relatively high theta pattern of the heat exchanger area, i.e. a pattern of a corrugation that may have a larger inclination (chevron angle) in relation to the longitudinal central axis of the heat exchanger plate.
  • a relatively high theta pattern creates more turbulence and thus more heat transfer, higher pressure drop and higher flow resistance.
  • the objective of the invention is to provide a heat exchanger plate and a plate heat exchanger that achieve low disturbance of flow. It is a further objective to have a low pressure drop over the heat exchanger.
  • the objectives are achieved by providing a heat exchanger plate with seamless integration of the heat transfer area and distribution area with no sharp changes of direction of corrugations.
  • a heat exchanger plate for a plate heat exchanger for heat exchange between at least a first fluid and a second fluid
  • the heat exchanger plate having a quadrilateral shape with two opposite parallel primary sides and two opposite parallel secondary sides, and a longitudinal central axis being parallel with the primary sides
  • the heat exchanger plate comprising a heat exchanging area having a corrugation of ridges and valleys having a longitudinal extension defining an inclination in relation to the longitudinal central axis, four portholes, of which at least two are located at a respective corner of the heat exchanger plate extending through the heat exchanger plate, a first set of ridges and valleys and a second set of ridges and valleys, wherein the longitudinal extension of the first set of ridges and valleys define a first angle in relation to a first primary side and the longitudinal extension of the second set of ridges and valleys define a second angle in relation to a second primary side, wherein an intersection between the first set of ridge
  • the concentric transition area between the corrugations having a first angle and the corrugations having a second angle achieves a low disturbance of flow.
  • the ridges and valleys are extending continuously from the first primary side to the second primary side. So, there is a smooth transition of the corrugations from first to second primary side and vice versa.
  • the first angle is larger than the second angle.
  • the first angle is in the range of 50° to 70°. More specifically, the first angle might be 55°, 60°, or 65°.
  • the second angle is in the range of 30° to 60°. More specifically, the second angle might be 35°, 40°, 45°, 50°, or 55°.
  • the portholes comprising a first porthole, a second porthole, a third porthole and a fourth porthole, and wherein the transition area is concentric with the first porthole.
  • the first porthole and the third porthole have the same diameter and wherein the second porthole and the fourth porthole have the same diameter and wherein the first and third portholes have a larger diameter than the second and fourth portholes.
  • the distance between the two primary sides is maximum 90 mm.
  • the distance between the two primary sides is maximum 45 mm.
  • a plate heat exchanger comprising first heat exchanger plates and second heat exchanger plates arranged side by side, first plate interspaces for a first fluid, each first plate interspace being formed by one of the first heat exchanger plates and an adjacent one of the second heat exchanger plates, and second plate interspaces for a second fluid, each second plate interspace being formed by one of the second heat exchanger plates and an adjacent one of the first heat exchanger plates, at least one of the first heat exchanger plates is a heat exchanger plate according to the first aspect.
  • the first and second heat exchanger plates are permanently joined to each other.
  • the second heat exchanger plates are mirrored versions of the first heat exchanger plates.
  • the first porthole and the third porthole communicate with the first plate interspaces, and wherein the second porthole and the fourth porthole communicate with the second plate interspaces.
  • the plate heat exchanger may be configured to be operated as an evaporator or a condenser. However, the plate heat exchanger may also be used for other heat exchanging applications.
  • Fig 3 discloses an embodiment of a plate heat exchanger, where first and second heat exchanger plates A, B are arranged side by side in such a way that first plate interspaces 3 for a first fluid and second plate interspaces 4 for a second fluid are formed. At least one of the first heat exchanger plates A may be a heat exchanger plate 1 as described in relation to figure 1 .
  • the first fluid may be a heat carrying fluid, such as a dielectric fluid
  • the second fluid may be water
  • Fig 1 discloses a heat exchanger plate 1 having a corrugation of ridges and valleys and having a quadrilateral shape with two opposite parallel primary sides 5 and two opposite parallel secondary sides 6.
  • the quadrilateral shape is rectangular with rounded corners, wherein the primary sides 5 form long sides, and the secondary sides 6 form short sides.
  • the plate comprises a first primary side 5a and a second primary side 5b.
  • the heat exchanger plate comprising a heat exchanger area extending in parallel with the extension plane.
  • a longitudinal central axis x extends through the secondary sides 6 and is parallel with the primary sides 5.
  • the longitudinal central axis x is parallel with the extension plane of each of the first and second heat exchanger plates A, B ( fig 3 ).
  • the heat exchanger plate 1 has a first porthole 11, a second porthole 12, a third porthole 13 and a fourth porthole 14. Two of the four portholes are located close to the secondary side, the other two portholes are located close to the opposite secondary side.
  • the second porthole 12 is located closer to the corner of the plate than the first porthole 11.
  • the fourth porthole 14 is located closer to the corner of the plate than the third porthole 13.
  • the portholes may be grouped as 11 and 12 being used as inlet portholes for a first fluid and a second fluid, respectively. Portholes 13 and 14 are then used as outlet portholes for a first fluid and a second fluid, respectively.
  • the first porthole 11 being an inlet and the third porthole 13 being an outlet for a first fluid, wherein these two portholes have the same diameter.
  • the second porthole 12 being an inlet and the fourth porthole 14 being an outlet for a second fluid, wherein these two portholes have the same diameter and which diameter is smaller than the portholes for the first fluid.
  • the first and third portholes 11, 13 are arranged in a recessed heat plate area.
  • the first and second fluids may also be directed in the opposite direction through the heat exchanger plate package, so that the first porthole 11 is an outlet and the third porthole 13 is an inlet for a first fluid, and the second porthole 12 is an outlet and the fourth porthole 14 is an inlet for a second fluid.
  • the heat exchanger plate 1 has a configuration that is rather elongated where the primary sides 5 have a length that is more than four times the length of the secondary sides 6.
  • Fig 2A discloses the heat exchanger plate 1 in the vicinity of the first and the second inlet portholes 11, 12 having a corrugation of ridges 8a, 8b and valleys 9a, 9b.
  • the ridges and valleys have a constant width along their extension, from one first primary side 5a to a second primary side 5b.
  • a first set of ridges 8a and a first set of valleys 9a are located close to the first primary side 5a and a second set of ridges 8b and a second set of valleys 9b are located close to the second primary side 5b.
  • the first inlet porthole 11 is closer to the first primary side 5a and the second inlet porthole 12 is closer to the second primary side 5b.
  • the ridges 8a, 8b and valleys 9a, 9b have an inclination in relation to the primary side 5a, 5b, respectively (the primary sides being parallel to the longitudinal central axis x).
  • the first set of ridges 8a and valleys 9a incline with a first angle ⁇ in relation to the first primary side 5a.
  • the second set of ridges 8b and valleys 9b incline with a second angle ⁇ in relation to the second primary side 5b.
  • the first angle ⁇ is larger than the second angle ⁇ .
  • the first angle ⁇ is in the range of 50° to 70°, or a value there between such as 55°, 60°, or 65°.
  • the second angle ⁇ is in the range of 30° to 60°, or a value there between such as 35°, 40°, 45°, 50°, or 55°.
  • a transition area 10 is defined where the first set of ridges 8a and valleys 9a meet the second set of ridges 8b and valleys 9b.
  • the curvature of the ridges and valleys in the transition area 10 is concentric with the first porthole 11.
  • the corrugation of ridges 8a, 8b and valleys 9a, 9b extends between a top plane and a bottom plane.
  • the top plane and bottom plane are parallel with each other and with the extension plan.
  • the ridges extend along the top plane and the valleys extend along the bottom plane.
  • Fig 2B discloses a cross section taken along line A-A' in fig 2A and depicting top plane of the first set of ridges 8a and the bottom plane of the first set of valleys 9a.
  • the second set of ridges 8b and valleys 9b has a corresponding cross-sectional profile.
  • Fig 2C discloses a cross section taken along line B-B' in fig 2A wherein the first and the second portholes 11, 12 are disclosed to be located in different planes.
  • Fig 3 discloses a plate heat exchanger comprising a plurality of first heat exchanger plates A and a plurality of second heat exchanger plates B arranged beside each other in an alternating order in the plate heat exchanger.
  • the side view is taken as a cross section through the center of the second and the fourth portholes 12, 14 with a cut parallel to the longitudinal central axis x.
  • each of the first plate interspaces 3 is formed by one of the first heat exchanger plates A and an adjacent one of the second heat exchanger plates B.
  • Each of the second plate interspaces 4 is formed by one of the second heat exchanger plates B and an adjacent one of the first heat exchanger plates A.
  • the first and second plate interspaces 3, 4 are arranged beside each other in an alternating order.
  • a first inlet channel connected to the first inlet porthole and a first outlet channel connected to the first outlet porthole communicate with the fist plate interspaces 3 in order to supply the first fluid to the first plate interspaces 3 and to discharge the first fluid from the first plate interspaces 3.
  • the second inlet channel connected to the first inlet porthole and a second outlet channel connected to the second outlet porthole communicate with the second plate interspaces 4 in order to supply the second fluid to the second plate interspaces 4 and to discharge the second fluid from the second plate interspaces 4.
  • first and second heat exchanger plates A, B are permanently joined to each other, preferably brazed to each other.
  • the first and second heat exchanger plates A, B may however be mounted together in other ways, for instance be means of tie bolts.
  • the flange of the edge area of one of the first heat exchanger plates A may be joined to the corresponding flange of the edge area of an adjacent one of the second heat exchanger plates B.
  • the embodiment disclosed refers to an evaporator.
  • the heat exchanger plate and the plate heat exchanger may be used as a condenser.
  • inventions disclosed and discussed above are configured for counter-current flow of the first and second fluids.
  • the embodiments may alternatively be configured for co-current flow of the first and second fluids, wherein, for instance, the first outlet channel forms an inlet for the first fluid, and the first inlet channel forms an outlet for the first fluid.

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)
EP22204918.1A 2022-11-01 2022-11-01 Plaque d'échangeur de chaleur et échangeur de chaleur à plaques Pending EP4365532A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22204918.1A EP4365532A1 (fr) 2022-11-01 2022-11-01 Plaque d'échangeur de chaleur et échangeur de chaleur à plaques
PCT/EP2023/079079 WO2024094432A1 (fr) 2022-11-01 2023-10-19 Plaque d'échange de chaleur et échangeur de chaleur à plaque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22204918.1A EP4365532A1 (fr) 2022-11-01 2022-11-01 Plaque d'échangeur de chaleur et échangeur de chaleur à plaques

Publications (1)

Publication Number Publication Date
EP4365532A1 true EP4365532A1 (fr) 2024-05-08

Family

ID=84047566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22204918.1A Pending EP4365532A1 (fr) 2022-11-01 2022-11-01 Plaque d'échangeur de chaleur et échangeur de chaleur à plaques

Country Status (2)

Country Link
EP (1) EP4365532A1 (fr)
WO (1) WO2024094432A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017406A1 (fr) * 1990-05-08 1991-11-14 Alfa-Laval Thermal Ab Evaporateur a plaques
EP1376042A2 (fr) * 2002-06-25 2004-01-02 Zilmet S.p.A. Echangeur de chaleur à plaques avec production simplifiée
EP2410278A1 (fr) * 2009-03-18 2012-01-25 Mitsubishi Electric Corporation Échangeur thermique de type à plaques et dispositif de conditionnement d'air et de réfrigération
WO2018215426A1 (fr) * 2017-05-22 2018-11-29 Swep International Ab Échangeur de chaleur comportant un échangeur de chaleur à gaz à aspiration intégrée

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991017406A1 (fr) * 1990-05-08 1991-11-14 Alfa-Laval Thermal Ab Evaporateur a plaques
EP1376042A2 (fr) * 2002-06-25 2004-01-02 Zilmet S.p.A. Echangeur de chaleur à plaques avec production simplifiée
EP2410278A1 (fr) * 2009-03-18 2012-01-25 Mitsubishi Electric Corporation Échangeur thermique de type à plaques et dispositif de conditionnement d'air et de réfrigération
WO2018215426A1 (fr) * 2017-05-22 2018-11-29 Swep International Ab Échangeur de chaleur comportant un échangeur de chaleur à gaz à aspiration intégrée

Also Published As

Publication number Publication date
WO2024094432A1 (fr) 2024-05-10

Similar Documents

Publication Publication Date Title
US9618280B2 (en) Plate-type heat exchanger, particularly for motor vehicles
CN110268216B (zh) 换热板和换热器
EP2151653B1 (fr) Échangeur thermique à micro-canaux
DK1794529T3 (en) Heat exchanger with recess pattern
US10048020B2 (en) Heat transfer surfaces with flanged apertures
EP3523591B1 (fr) Plaque de transfert de chaleur et échangeur de chaleur
EP2257757B2 (fr) Échangeur de chaleur à plaques
EP2394129B1 (fr) Echangeur thermique a plaques
JP5872859B2 (ja) 熱交換器
AU2010356148A1 (en) A heat exchanger plate and a plate heat exchanger
JP2004184075A (ja) 伝熱プレート及びプレート式熱交換器
EP3420292B1 (fr) Plaque pour échangeur de chaleur à plaques et échangeur de chaleur à plaques
EP4365532A1 (fr) Plaque d'échangeur de chaleur et échangeur de chaleur à plaques
AU2019389180B2 (en) Heat transfer plate
EP3598053B1 (fr) Échangeur de chaleur à plaques
CN113677945B (zh) 热交换器板和板式热交换器
JP3749436B2 (ja) 中断された回旋を具えた熱交換器用乱流化装置
EP2064509B1 (fr) Surfaces de transfert de chaleur dotées d'ouvertures à brides
EP4103904B1 (fr) Plaque d'échangeur de chaleur et échangeur de chaleur à plaques

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR