EP3510334A1 - Échangeur de chaleur à plaques à trou traversant de fixation de bloc hydraulique - Google Patents

Échangeur de chaleur à plaques à trou traversant de fixation de bloc hydraulique

Info

Publication number
EP3510334A1
EP3510334A1 EP17761275.1A EP17761275A EP3510334A1 EP 3510334 A1 EP3510334 A1 EP 3510334A1 EP 17761275 A EP17761275 A EP 17761275A EP 3510334 A1 EP3510334 A1 EP 3510334A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
opening
plates
communication
flow channels
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Withdrawn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
EP17761275.1A
Other languages
German (de)
English (en)
Inventor
Tomas Dahlberg
Sven Andersson
Fredrik Paulsson
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.)
Swep International AB
Original Assignee
Swep International 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 Swep International AB filed Critical Swep International AB
Publication of EP3510334A1 publication Critical patent/EP3510334A1/fr
Withdrawn legal-status Critical Current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
    • F28D9/0031—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
    • F28D9/0056—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 with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • 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
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements

Definitions

  • the present invention relates to a heat exchanger comprising a number of heat exchanger plates provided with a pressed pattern arranged such that flow channels for media to exchange heat will be formed between the number of heat exchanger plates when the plates are stacked onto one another to a heat exchanger plate stack, wherein port openings are provided for selective communication with the flow channels, the selective communication being achieved by placing areas surrounding said port openings at different heights, such that such areas of neighbouring plates contact one another when no communication is desired and do not contact one another when communication is desired.
  • brazed plate heat exchangers In the art of brazed plate heat exchangers, there has been a long felt need for increasing the strength of the port area, especially the area between the port openings. Brazed plate heat exchangers are inherently weak in the port area, due to pressure in the port acting on the port areas and relatively few contact points between the neighbouring plates.
  • connection to internal piping for the fluids to exchange heat.
  • connections are brazed on a start plate of the heat exchanger, wherein the connections are provided with fastening means for the external piping.
  • One drawback with such connections is that the connection either must be soldered to the heat exchanger after the heat exchanger has been brazed;
  • connections can be brazed in connection to the heat exchanger being brazed, but this comes with the prize that the brazing process will get less efficient due to reduced packing in the brazing furnace.
  • Hydro-blocks comprise a main body adapted to be pressed against a start plate, i.e. an upper plate of the heat exchanger being provided with port openings for the fluids to exchange heat, of the heat exchanger.
  • the hydro-block is provided with openings corresponding to the port openings of the heat exchanger and sealings arranged to seal between the hydro-block and the start plate.
  • some various options are known in the prior art - the most common being a bolt having an internal thread adapted to mate with a screw that can be used to create the force. This solution has the benefit that the heat exchanger is very easy to mount to the hydro-block. It gives, however, no additional strength to the heat exchanger.
  • an opening extending through the entire heat exchanger stack the opening being arranged in line with an axis extending centrally between two neighbouring port openings and being closed from communication with the flow channels.
  • the opening is closed from communication with the flow channels by surfaces neighbouring the opening on each heat exchanger plate being provided at different heights, such that such areas of neighboring plates always contact one another.
  • This embodiment is beneficial in that the opening may be made in any size, even a very small size.
  • the opening is closed from communication with the flow channels by the opening on each heat exchanger plate being provided with a skirt circumscribing the opening, said skirt extending frustoconically from the plane of the heat exchanger plate, wherein the skirt circumscribing the port of each port opening has a shape such that an outer surface thereof snugly fits inside a skirt of a neighbouring plate when the heat exchanger plates are stacked in the stack forming the heat exchanger.
  • FIG. 1 is a perspective view showing a heat exchanger according to one embodiment, being provided with hydroblocks for the connection of the heat exchanger to external piping;
  • Fig. 2a is a plan view of a heat exchanger according to a first embodiment
  • Fig. 2b is a section view of a heat exchanger according to the first embodiment, taken along the line A-A of Fig. 2a;
  • Fig 3 a is an exploded perspective view of a heat exchanger according to the first embodiment
  • Fig. 3b is a close-up view of the area A of Fig. 3a;
  • Fig. 4a is a plan view of a heat exchanger according to a second embodiment
  • Fig. 4b is a section view of a heat exchanger according to the second embodiment, taken along the line A-A of Fig. 4a;
  • Fig. 5 is a perspective view of a heat exchanger plate comprised in the heat exchanger according to the second embodiment.
  • Fig. 6 is an exploded perspective view of a heat exchanger according to the second embodiment.
  • This invention concerns brazed heat exchangers, i.e. heat exchangers where heat exchanger plates are bonded to one another by a thermal process wherein a brazing alloy is placed at or in the vicinity of contact points between neighboring plates and the temperature of the heat exchanger plates is increased sufficiently to cause the brazing alloy to melt. After the brazing alloy has melted, the temperature of the heat exchanger plates is lowered, whereupon the brazing alloy solidifies and hence binds the plates together at the contact points.
  • a heat exchanger HE is shown.
  • the heat exchanger HE is fastened to two "hydro-blocks" HB, having the function to enable a connection between the heat exchanger HE and external piping (not shown) containing fluids to exchange heat, e.g. refrigerant and/or brine solution.
  • the hydro-block HB also has the function of providing a sealing between the heat exchanger and itself.
  • this sealing is achieved by e.g. an O-ring provided in a groove of the hydro-block; when the hydro-block is pressed against the heat exchanger, the O-ring will create a reliable seal between the heat exchanger and the hydro-block.
  • the hydro-blocks HB are provided with fastening holes F.
  • Such fastening holes F extend through the hydro-block HB, on a position basically in line with openings O provided for connection to external piping and for communication with equally sized and placed port openings of the heat exchanger HE.
  • the in-line positioning is crucial in order to get an even pressure applied to the O-rings. Whether the opening is placed centrally between the openings O is not crucial - in some cases, it might actually be beneficial with an eccentric positioning of the opening O, especially if fluids to exchange heat having different operating pressure are heat exchanged in the heat exchanger. In such cases, it is advantageous to provide the opening O at a position closer to the opening for the fluid having the higher pressure.
  • the opening O shall, however, be positioned in-line with the port openings.
  • FIGs. 2a and 2b an exemplary heat exchanger 100 according to a first embodiment is shown.
  • a section view along the line A-A in fig 2a shows:
  • each of the plates is provided with port openings 120, wherein each port opening of each heat exchanger plate is circumscribed by a plate area being provided either level with the ridges R or level with the grooves G.
  • a through-opening 140 extending through the entire plate pack is arranged between the port openings 120.
  • This through-opening is arranged by providing the heat exchanger plates with a hole 150. Areas surrounding the hole 150 are provided at different heights (corresponding to the height of the ridges R and grooves G) and arranged such that any of the surfaces surrounding a hole always will contact a corresponding area of a neighbouring plate, hence creating a through- opening being completely sealed off from communication with the interplate flow channels. More details concerning the arrangement of the areas surrounding the holes of each heat exchanger plate will be given in connection to Fig. 3b.
  • Fig. 3 a an exploded view of a heat exchanger 100 according to one embodiment is shown,
  • the heat exchanger 100 comprises four heat exchanger plates (although the actual number of heat exchanger plates in a real-world heat exchanger often is significantly higher).
  • the pressed pattern comprising ridges R and grooves G are provided in a herringbone pattern; every other plate is rotated 180 degrees in its plane, meaning that an "arrow" of the herringbone pattern will point consecutively upwards and downwards.
  • the ridges R and grooves G of neighboring plates will have directions crossing the direction of one another plate - hence, the plates will be kept on a distance from one another by the contact points formed between the crossing neighboring ridges and grooves.
  • skirts 160 extend along the circumference of the heat exchanger plates.
  • the skirts 160 extend in an angle being substantially perpendicular to the plane of the heat exchanger plate and are arranged to contact one another such that a seal is formed along the edges of the interplate flow channels.
  • each hole 150 is surrounded by two circular areas 170 and 180, provided on different heights.
  • either the circular areas 180 or the circular areas 170 of neighboring plates will contact one another when the plates are placed in a stack to form the heat exchanger 100.
  • the holes 150 will be sealed off from communication with the interplate flow channels.
  • the start- and end plates are similar in design to the heat exchanger plates 120, but may be made from a thicker gauge sheet metal. Also, areas surrounding port openings of the start plate are provided at the same height, whereas there are no port openings at all at the end plate.
  • two screws 300 protrude through the holes 150 of each of the heat exchanger plates.
  • the screws are provided with an external thread that mates with an internal thread of the hydro-block HB, and by tightening the screw 300, the hydro-block will be pressed towards the start plate 190.
  • sealing means 310 housed in grooves circumscribing the openings 120, the connection between the start plate and hydro-block will be sealed.
  • a second embodiment is shown. This embodiment is identical to the first embodiment, except for the holes 150 of the first embodiment being substituted by frustoconically extending skirts 250 having a central opening 255.
  • the holes 150 of the first embodiment being substituted by frustoconically extending skirts 250 having a central opening 255.
  • frustoconically extending skirts 250 are sized and arranged such that an external surface of one frustoconically extending skirt will fit snugly against an inner surface of a frustoconically extending skirt of a neighbouring plate when the heat exchanger plates are stacked into a stack to form the heat exchanger.
  • the central openings 255 will form a through opening extending through the entire heat exchanger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur qui comporte un certain nombre de plaques d'échangeur de chaleur munies d'un motif estampé à la presse conçu pour former des canaux d'écoulement pour les agents d'échange de chaleur entre les plaques d'échangeur de chaleur, lorsque lesdites plaques sont empilées les unes sur les autres pour former un empilement de plaques d'échangeur de chaleur. Des ouvertures d'orifice sont utilisées pour une communication sélective avec les canaux d'écoulement, la communication sélective étant obtenue par placement à des hauteurs différentes des zones entourant les ouvertures d'orifice, afin que lesdites zones de plaques voisines viennent en contact lorsque la communication n'est pas souhaitée et qu'elles ne viennent pas en contact lorsque la communication est souhaitée. Au moins une ouverture s'étend à travers toute la pile de l'échangeur de chaleur, ladite ou lesdites ouvertures étant agencées en ligne avec un axe s'étendant centralement entre deux ouvertures d'orifice voisines et n'étant pas en communication avec les canaux d'écoulement.
EP17761275.1A 2016-09-12 2017-09-04 Échangeur de chaleur à plaques à trou traversant de fixation de bloc hydraulique Withdrawn EP3510334A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1651224A SE1651224A1 (en) 2016-09-12 2016-09-12 Heat exchanger having through hole for fastening of hydro block
PCT/EP2017/072134 WO2018046451A1 (fr) 2016-09-12 2017-09-04 Échangeur de chaleur à plaques à trou traversant de fixation de bloc hydraulique

Publications (1)

Publication Number Publication Date
EP3510334A1 true EP3510334A1 (fr) 2019-07-17

Family

ID=59761986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17761275.1A Withdrawn EP3510334A1 (fr) 2016-09-12 2017-09-04 Échangeur de chaleur à plaques à trou traversant de fixation de bloc hydraulique

Country Status (3)

Country Link
EP (1) EP3510334A1 (fr)
SE (1) SE1651224A1 (fr)
WO (1) WO2018046451A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3111976B1 (fr) * 2020-06-24 2022-07-08 Valeo Systemes Thermiques Échangeur de chaleur.
FR3119447B1 (fr) * 2021-01-29 2023-04-14 Groupe H Labbe échangeur de chaleur a plaques

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62202997A (ja) * 1986-02-28 1987-09-07 Tsuchiya Mfg Co Ltd 複合式熱交換器
SE9504586D0 (sv) 1995-12-21 1995-12-21 Tetra Laval Holdings & Finance Plattvärmeväxlare
DE19722074A1 (de) * 1997-05-27 1998-12-03 Knecht Filterwerke Gmbh Plattenwärmetauscher, insbesondere Öl/Kühlmittel-Kühler für Kraftfahrzeuge
SE524176C2 (sv) * 2002-11-01 2004-07-06 Ep Technology Ab Värmeväxlare med förstärkningsorgan
MY155988A (en) * 2008-12-17 2015-12-31 Swep Int Ab Port opening of heat exchanger
EP3018318A3 (fr) * 2014-08-18 2016-07-20 Modine Manufacturing Company Refroidisseur d'air de charge et collecteur d'admission comprenant celui-ci

Also Published As

Publication number Publication date
SE1651224A1 (en) 2018-03-13
WO2018046451A1 (fr) 2018-03-15

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