WO2019115255A1 - Échangeur de chaleur à plaques - Google Patents

Échangeur de chaleur à plaques Download PDF

Info

Publication number
WO2019115255A1
WO2019115255A1 PCT/EP2018/083135 EP2018083135W WO2019115255A1 WO 2019115255 A1 WO2019115255 A1 WO 2019115255A1 EP 2018083135 W EP2018083135 W EP 2018083135W WO 2019115255 A1 WO2019115255 A1 WO 2019115255A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
plate heat
cover part
fluid
bottom part
Prior art date
Application number
PCT/EP2018/083135
Other languages
German (de)
English (en)
Inventor
Florian LARISCH
Fritz Wegener
Original Assignee
Webasto SE
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 Webasto SE filed Critical Webasto SE
Publication of WO2019115255A1 publication Critical patent/WO2019115255A1/fr

Links

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
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B60H1/2221—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating an intermediate liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2271—Heat exchangers, burners, ignition devices

Definitions

  • the present invention relates to a plate heat exchanger, in particular for an electrically operated vehicle heating.
  • the present invention has for its object to provide a lightweight, compact and at the same time efficient heat exchanger.
  • the plate heat exchanger comprises a fluid inlet and a fluid outlet. Furthermore, a cup-shaped bottom part and the bottom part covering lid part are provided.
  • the cover part can likewise be designed like a shell.
  • the bottom part and the lid part form a cavity in the assembled state, which defines a heat exchanger region for a fluid to be heated.
  • an electric heating element is arranged flat.
  • further electrical heating elements may be provided, for example, a further electrical heating element may be arranged flat on the bottom part.
  • the Heat transfer area can lie fluidly between an inlet area and a drain area.
  • the fluid to be heated then first enters the inlet area, flows from there into the heat exchanger area and finally reaches the drainage area.
  • the inlet area and the outlet area can be formed, for example, directly by the cavity defined by the base part and the cover part. Alternatively, it is also possible for the inlet area and the outlet area to be formed separately from the floor part and the cover part by additional components that directly adjoin the cavity defined by the floor part and the cover part. It is likewise possible for the inlet area and / or the outlet area to be formed only by the lid part or the bottom part.
  • the fluid inlet can flow into the inlet area or be attributed to this.
  • the drainage area can continue into the fluid drain or be attributed to this.
  • the electrical heating element can determine the heat exchanger region of the cavity formed by the bottom part and the lid part by virtue of its spatial extent.
  • the height of the cavity may for example be 2.5 to 6 mm, preferably the height may be 4 mm.
  • the electrical heating element can be arranged in a planar manner on an outer side of the cover part facing away from the hollow space, so that the region of the hollow space which is covered by the electrical heating element can be regarded as a heat transfer area.
  • the electrical heating element can be produced directly on the cover part in the form of a resistance conductor track by means of a coating method.
  • the coating process can be carried out, for example, by applying a resistance paste or in a plasma coating process.
  • the electrical heating element can be the only heat source of the electrically operated vehicle heating system.
  • the bottom part and the lid part may for example be formed from thin aluminum or steel sheet.
  • the wall thickness of the bottom part and / or the cover part may be less than 4 mm, preferably less than 3 mm, and more preferably between 1 and 2 mm.
  • the plate heat exchanger may have exactly one single plate-like cavity in which the fluid is heated.
  • the fluid inlet and the fluid outlet can, as a connection piece known per se to the person skilled in the art, be placed in recesses provided on the bottom and / or cover part and fixed in a fluid-tight manner. The fixation can be done for example by means of a soldering or welding process.
  • the electrical heating element may comprise one or more resistor traces. There may be provided connection contacts to couple the electrical heating element to a power source.
  • the electric heating element may in particular be a non-intrinsic be safe electrical heating element.
  • the electrical heating element is formed as an intrinsically safe electrical heating element, for example in the form of PTC heating elements, which are for example produced separately from the plate heat exchanger and only then, after their preparation, are fixed on the lid part.
  • the turbulator may alter the fluid flow in the cavity to a turbulent flow such that the fluid flowing through the cavity is better mixed, thereby increasing the efficiency of the heat exchanger.
  • the grid-like turbulator can for example be made of a single sheet, wherein initially slots can be punched into the sheet and then by a "accordion-like" folding a lattice-like structure of the turbulator can arise.
  • the turbulator may be made of the same material as the bottom and / or the lid part.
  • the material thickness of the turbulator can, for example, correspond to the wall thickness of the floor and / or lid part or at least be in a similar range.
  • provision can also be made for the bottom part and / or the cover part to have a multiplicity of extensions which protrude into the cavity in the assembled state and form the lattice-type turbulator there.
  • the turbulator is arranged fluidically between the fluid inlet and the fluid outlet.
  • the turbulator can be arranged in particular in the heat exchanger region and limited to this. In this way, the internal flow resistance of the plate heat exchanger can be kept as low as possible. Furthermore, the turbulator can improve its heat transfer into the cavity by its direct contact with the cover part.
  • the bottom part and the cover part are designed as sheet metal shaped parts.
  • the production of sheet metal parts is easy and cost effective to implement, so that the resulting plate heat exchanger can also be produced inexpensively.
  • Sheet metal parts also have a low wall thickness and thus a low weight, in particular a lower weight compared with conventional die cast parts, which is why the weight reduction resulting from the use of sheet metal parts has positive effects on the resulting plate heat exchanger.
  • the bottom part and / or the cover part has beads which protrude into the cavity.
  • beads in particular beads, which are embedded in the bottom part and / or the cover part at the border crossing between the inlet area and the heat exchanger area and / or at the border crossing between the drain area and the heat exchanger area, can result in a uniform fluid inlet and fluid outlet be realized in and out of the heat exchanger area.
  • a uniform fluid inlet and fluid outlet is not self-evident due to the various possible flow paths which deviate greatly in their length, but can be realized by the throttle effects caused by the beads.
  • the beads can protrude into the cavity to different extents, in order to ensure a uniform fluid flow through the heat exchanger region due to the resulting locally differing throttle effects at different spatial locations.
  • the bottom part and / or the cover part in the assembled state are at least partially soldered on their mutually facing surfaces.
  • Lotplatt ist the bottom part and the cover part on their facing surfaces in the assembled state a particularly simple fluid-tight connection between the bottom part and cover part is made possible by brief heating, the solder melts and a cohesive connection between floor and lid part at all contact points between Bottom and lid part realized.
  • bottom part and the cover part are soldered together.
  • the turbulator which is arranged between the bottom part and the cover part, is also soldered to the bottom part and / or the cover part.
  • a soldering of the turbulator with the bottom part and / or the cover part significantly increases the mechanical stability of the plate heat exchanger, in particular its rigidity, so that it has sufficient compressive strength in the event of a fault, even with low wall thicknesses of the bottom part and cover part.
  • the soldering can take place both in the inserted turbulator and in the turbulator, which is formed from projections extending into the cavity.
  • a thermal insulation layer may be provided which covers at least the electrical heating element arranged on the cover part.
  • thermal insulation layer which can be realized, for example, in the form of a thermally insulating polyurethane foam and / or a thermally insulating cover to be mounted separately, the efficiency of the plate heat exchanger is further increased since a direct energy loss through unused radiated heat to the outside can be significantly reduced.
  • the bottom part and / or the cover part can have post-like impressions, so that the bottom part and the cover part touch one another in the area of the post-like impressions in the assembled state.
  • the contact points created by the post-like indentations can also be soldered to one another, so that the mechanical stability of the plate heat exchanger is further improved.
  • the post-like indentations can be arranged in particular in the inlet area and / or in the outlet area, ie in areas in which preferably no turbulator is arranged.
  • the post-like indentations can continue to contribute in the inlet area and in the drain area in addition to the beads to produce a uniform fluid flow in the heat exchanger region, for example, by portions of the fluid flow are selectively diverted in the direction of the heat exchanger area.
  • Figure 1 is a schematic representation of a vehicle with an electrically operated vehicle heating
  • Figure 2 is a three-dimensional exterior view of a plate heat exchanger
  • Figure 3 is a three-dimensional view of a bottom part with inserted turbulator
  • FIG. 4 shows a three-dimensional view of a turbulator
  • FIG. 5 is a side sectional view through a plate heat exchanger.
  • like reference characters designate like or similar parts.
  • FIG. 1 shows a schematic illustration of a vehicle 40 with an electrically operated vehicle heating system 12.
  • the vehicle may be, for example, a vehicle that is driven completely electrically.
  • the indicated vehicle 40 comprises as primary energy source a current source 38, which is connected by means of connection lines 42 to the electrically operated vehicle heater 12.
  • the electrically operated vehicle heater comprises a plate heat exchanger 10 with an electrical heating element 26 and a thermal insulation 36.
  • FIG. 2 shows a three-dimensional exterior view of a plate heat exchanger.
  • the illustrated plate heat exchanger 10 comprises a fluid inlet 14 and a fluid outlet 16, wherein fluid 24 to be heated via the fluid inlet 14 enters the plate heat exchanger 10 and heated fluid 24 exits the plate heat exchanger 10 at the fluid outlet 16 ,
  • the fluid inlet 14 and the fluid outlet 16 are shown lying in the plane of the plate heat exchanger 10.
  • the fluid inlet 14 and / or the fluid outlet 16 may also be realized at an angle to the plane of the plate heat exchanger 10, for example, which may be advantageous depending on the available installation space.
  • the fluid inlet 14 opens in the embodiment shown in Figure 2 in a tapering away from the fluid inlet inlet area.
  • two impressions 44 can be seen, which have a wing-like profile.
  • the indentations protrude into the inlet region and divert parts of the fluid 24 flowing into the inlet region in a targeted manner in the direction of the adjacent heat exchanger region.
  • the heat transfer area is substantially below the electric heating element 26 in FIG. 2.
  • the inlet area and the heat exchanger area are separated from one another by a bead 30, wherein the bead 30 also contributes to uniform transfer of the fluid 24 from the inlet area into the heat exchanger area ,
  • a bead 30 is likewise provided on the opposite side, that is to say at the end of the heat exchanger region at which the fluid 24 enters the adjacent drainage region.
  • indentations 44 can be seen in the drain region, which is separated by the bead 30 from the heat exchanger region.
  • the beads 30 may, for example, be made closer to the fluid inlet 14 and the fluid outlet 16 to be deeper there to produce greater throttle effect.
  • the fluid inlet 14 and the fluid outlet 16 may be designed, for example, as conventional pipe sockets.
  • FIG. 3 shows a three-dimensional view of a bottom part 18 with turbulator 28.
  • the upwardly open bottom part 18 shown in FIG. 3 substantially corresponds to the lower part of the plate heat exchanger 10 shown completely closed in FIG. 2.
  • the bottom part 18 is designed shell-like and has a rim 46, which may be circumferential.
  • the heat exchanger region can be seen in FIG. 3 by the already inserted turbulator 28, wherein the bead 30 can additionally be seen, at least in the transition region between the heat exchanger region and the outlet region.
  • the inflows and outflows of the fluid which are designed in each case as simple pipe sockets, as well as impressions 44, are visible in the inlet area and in the outlet area.
  • the illustrated turbulator 28 may be inlaid or formed by a plurality of extensions on the bottom portion 18 which project into the heat exchanger region.
  • the extensions can be formed, for example, by forming from the bottom part 18. It is also possible that the turbulator 28 is partially or completely formed by extensions of the cover part, not shown.
  • Figure 4 shows a three-dimensional view of a turbulator 28.
  • the turbulator 28 may be made of a single sheet. In the manufacture of the turbulator 28, for example, first slots can be punched into a sheet, wherein the stamped sheet can then be "accordion-like" brought together to form the recognizable lattice structure.
  • the turbulator 28 shown in FIG. 4 can be inserted in particular into the cavity formed by the bottom part and the cover part.
  • FIG. 5 shows a side sectional view of the plate heat exchanger 10.
  • the bottom part 18 can be seen with the edge 46.
  • the bottom part 18 has post-like indentations in the inlet area and the outlet area.
  • the inlet area and the outlet area are each separated by beads 30 from the heat transfer area arranged therebetween, wherein the turbulator 28 can be seen in the heat exchanger area.
  • the plate heat exchanger is closed by a cover part 20, so that between the bottom part 18 and the cover part 20, a cavity 22 is formed.
  • Opposite surfaces 32, 34 of the bottom portion 18 and the lid portion 20 are solder plated.
  • the bottom part 18 and the lid part 20 touch in particular in the region of the edge 46, which may be circumferential, in the area of the post-like indentations 44 and on upper and lower grid surfaces.
  • the turbulator By briefly heating the plate heat exchanger 10 to a temperature above the melting point of the solder used for the plating, all points of contact between the bottom part 18 and the lid part 20 can be connected cohesively, so that the resulting plate heat exchanger 10 has a high mechanical stability and is fluid-tight.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un échangeur de chaleur à plaques (10), notamment pour un système de chauffage de véhicule électrique (12), comprenant une arrivée de fluide (14) et une évacuation de fluide (16), une partie fond (18) en forme de coque, une partie couvercle (20) recouvrant la partie fond (18), la partie fond (18) et la partie couvercle (20) formant à l'état assemblé une cavité (22) qui définit une zone d'échange de chaleur pour un fluide à chauffer (24), et au moins un élément chauffant (26) électrique disposé à plat sur la partie couvercle (20).
PCT/EP2018/083135 2017-12-13 2018-11-30 Échangeur de chaleur à plaques WO2019115255A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017129749.9 2017-12-13
DE102017129749.9A DE102017129749A1 (de) 2017-12-13 2017-12-13 Plattenwärmetauscher

Publications (1)

Publication Number Publication Date
WO2019115255A1 true WO2019115255A1 (fr) 2019-06-20

Family

ID=64604635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/083135 WO2019115255A1 (fr) 2017-12-13 2018-11-30 Échangeur de chaleur à plaques

Country Status (2)

Country Link
DE (1) DE102017129749A1 (fr)
WO (1) WO2019115255A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020131023A1 (de) 2020-11-24 2022-05-25 Dbk David + Baader Gmbh Fluidführungselement und Fluidheizer
DE102021214435A1 (de) 2021-12-15 2023-06-15 Mahle International Gmbh Hochvoltheizer
DE102022206987A1 (de) 2022-07-08 2024-01-11 Mahle International Gmbh Aufsteckmanschette, Wärmetauscher mit derselben sowie Verfahren zur Montage einer Aufsteckmanschette
DE102022211551B4 (de) 2022-10-27 2024-05-29 Vitesco Technologies GmbH Temperiervorrichtung, Baugruppe mit einer derartigen Temperiervorrichtung, und Fahrzeug mit einer derartigen Temperiervorrichtung oder einer derartigen Baugruppe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104673A2 (fr) * 1982-09-24 1984-04-04 Onofrio Rocchitelli Dispositif de chauffage de liquide de lavage de vitres de véhicules automobiles et analogues
DE4433814A1 (de) * 1994-09-22 1996-03-28 Behr Gmbh & Co Kraftfahrzeug
EP2260957A1 (fr) * 2008-02-19 2010-12-15 Showa Denko K.K. Procédé de fabrication d'un composant de raccordement de tuyaux, procédé de fabrication d'un élément structural d'enveloppe, et structure de raccordement de tuyaux pour une partie creuse
EP2295886A2 (fr) * 2009-08-21 2011-03-16 BorgWarner BERU Systems GmbH Dispositif de chauffage de liquides
WO2017162237A1 (fr) * 2016-03-24 2017-09-28 Benteler Automobiltechnik Gmbh Dispositif de chauffage ainsi que procédé de chauffage d'un véhicule automobile
EP2844942B1 (fr) * 2012-05-02 2018-11-21 Webasto SE Système de chauffage pour un véhicule et procédé permettant de faire fonctionner le système de chauffage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1306126A1 (fr) * 2001-10-19 2003-05-02 Methanol Casale S.A. Echangeur de chaleur pour réacteurs chimiques isothermes
EP1788335A1 (fr) * 2005-11-18 2007-05-23 Methanol Casale S.A. Procédé de fabrication d'un échangeur de chaleur à plaques et échangeur de chaleur correspondant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104673A2 (fr) * 1982-09-24 1984-04-04 Onofrio Rocchitelli Dispositif de chauffage de liquide de lavage de vitres de véhicules automobiles et analogues
DE4433814A1 (de) * 1994-09-22 1996-03-28 Behr Gmbh & Co Kraftfahrzeug
EP2260957A1 (fr) * 2008-02-19 2010-12-15 Showa Denko K.K. Procédé de fabrication d'un composant de raccordement de tuyaux, procédé de fabrication d'un élément structural d'enveloppe, et structure de raccordement de tuyaux pour une partie creuse
EP2295886A2 (fr) * 2009-08-21 2011-03-16 BorgWarner BERU Systems GmbH Dispositif de chauffage de liquides
EP2844942B1 (fr) * 2012-05-02 2018-11-21 Webasto SE Système de chauffage pour un véhicule et procédé permettant de faire fonctionner le système de chauffage
WO2017162237A1 (fr) * 2016-03-24 2017-09-28 Benteler Automobiltechnik Gmbh Dispositif de chauffage ainsi que procédé de chauffage d'un véhicule automobile

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