EP4086555B1 - Wartungsarmes wärmetauschergerät - Google Patents

Wartungsarmes wärmetauschergerät Download PDF

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Publication number
EP4086555B1
EP4086555B1 EP22169975.4A EP22169975A EP4086555B1 EP 4086555 B1 EP4086555 B1 EP 4086555B1 EP 22169975 A EP22169975 A EP 22169975A EP 4086555 B1 EP4086555 B1 EP 4086555B1
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EP
European Patent Office
Prior art keywords
fluid
fluid circulation
heat exchange
circulation element
heat transfer
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.)
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Application number
EP22169975.4A
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English (en)
French (fr)
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EP4086555A1 (de
Inventor
Nadia Caney
Alain MEMPONTEIL
Fabien Vidotto
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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Publication of EP4086555A1 publication Critical patent/EP4086555A1/de
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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
    • F28D9/0037—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
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/06—Peltier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/002—Liquid coolers, e.g. beverage cooler
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0042—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for foodstuffs
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/02—Flexible 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
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements

Definitions

  • the present invention relates to a heat exchange device for fluid requiring reduced maintenance.
  • drinking establishments generally use a beer tap which allows beer to be served from a keg.
  • the tap incorporates a beer cooling system which generally consists of circulating the beer in a metal tube, for example in the shape of a serpentine, surrounded by iced water. The beer in contact with the wall of the cooled tube cools before leaving the tap.
  • tube cleaning is required when changing the fluid to be cooled or heated.
  • the problem can also arise when heating or cooling other fluids which are not intended to be ingested, when one wishes to change the fluid to be heated or cooled and ensure that no residue of the fluid remains. previous in the tube.
  • This cleaning is all the more complex as the tube has a complex shape, for example a serpentine shape.
  • WO-A-2017149217 discloses a heat exchange device according to the preamble of claim 1. Other heat exchange devices are described in WO-A-0007929 And WO-A2012045174 .
  • a heat exchange device for a fluid comprising at least one heat transfer element and at least one fluid circulation element configured to be in contact with the heat transfer element, said fluid circulation element comprising a fluid circulation channel between an inlet and an outlet, said fluid circulation element being removably mounted in the heat exchange device.
  • the fluid exchanges heat with the heat transfer element through the walls of the circulation element.
  • the fluid can be brought to a desired temperature by heat exchange with the heat transfer element.
  • the fluid circulation element being removable, it can be removed during maintenance and can be easily cleaned. It may be considered to replace it with a new circulation element.
  • the fluid circulation element is made of a flexible material delimiting the fluid circulation channel.
  • the fluid circulation element is for example made by a pocket formed by two sheets of polymer material welded and delimiting the circulation channel between them.
  • the circulation element is such that it is removable and can be easily removed, replaced or replaced in the heat exchange device.
  • the pressurized fluid circulating in the bag deforms the walls which come into contact with the heat transfer element(s), ensuring good heat exchange.
  • the flexible pocket is then a three-dimensional exchanger component made from two-dimensional films by circulating the treated fluid under pressure in the exchanger component, which deforms it transversely, and makes it possible to obtain thermal contact on the exchange plates.
  • the sheets are made of polymer material, metal or polymer/metal composite.
  • the heat transfer element may comprise a plate in which at least one channel is provided for the circulation of a heat carrier or may comprise a solid plate ensuring the conduction of heat between two fluid circulation elements.
  • One of the objects of the present application is a heat exchange device for modifying the temperature of at least a first fluid, comprising at least one heat transfer element and at least one circulation element of the first fluid configured to be in contact with the heat transfer element, the element for circulating the first fluid comprising a channel for circulating the first fluid between an inlet and an outlet, at least one wall of which is intended to be in contact with the heat transfer element heat transfer, said circulation element being removably mounted in the heat exchange device, the channel inlet comprising a first connector configured to connect the circulation element of the first fluid to a first circuit connected to a source of first fluid and the outlet of the channel comprising a second connector configured to connect the circulation element of the first fluid to a second circuit connected to means for using the first fluid, so that the circulation element of the first fluid is removable.
  • the first fluid circulation element is made of a flexible material delimiting the first fluid circulation channel between the inlet and the outlet, said first fluid circulation element being configured to deform when the first fluid circulates under pressure in the circulation channel and comes into contact with the at least one heat transfer element, such that the first fluid exchanges heat with the heat transfer element through the flexible material.
  • the circulation element of the first fluid comprises two superimposed sheets, each of the sheets being made of polymer, metal or a polymer and metal composite material and the circulation channel is formed by welds between the two sheets.
  • the polymer may be polyethylene and the metal may be aluminum.
  • the heat transfer element comprises at least one heat transfer channel.
  • the heat transfer element may include electric heating means.
  • the heat exchange device comprises at least two heat transfer elements delimiting between them a housing configured to receive the circulation element of the first fluid.
  • the spacing between the two heat transfer elements is such that the circulation element of the first fluid in its deformed state is in contact with the two heat transfer elements.
  • the heat exchange device may comprise several elements for circulating the first fluid configured to be supplied in parallel or in series and several housings, each receiving an element for circulating the first fluid.
  • the heat exchange device comprises at least one circulation element for a second fluid disposed on the opposite side of the heat transfer element relative to the circulation element for the first fluid so as to so that there is a heat transfer between the first fluid and the second fluid.
  • the second fluid circulation element is advantageously made of a flexible material delimiting a second fluid circulation channel between an inlet and an outlet, said second fluid circulation element being configured to deform when the second fluid circulates under pressure in the circulation channel of the second fluid.
  • the heat exchange device comprises thermally insulating exterior walls.
  • Another subject of the application is a system for modifying the temperature of at least a first fluid comprising, at least one heat exchange device of the type described above, a source of first fluid under pressure at a first temperature connected to the inlet of an element for circulating the first fluid, a heat transfer source connected to a heat transfer element, and means for using the first fluid at a second temperature different from the first temperature.
  • the system is an on-demand beer dispensing system, with the first fluid being beer.
  • Another object of the present application is a system for modifying the temperature of at least a first fluid comprising, at least one heat exchange device of the type described above, comprising a source of first fluid under pressure connected to the element for circulating the first fluid and a source of second fluid under pressure connected to the element for circulating the second fluid
  • the invention applies to the heating or cooling of fluids, in particular liquids, such as water, milk, beer, and liquids whose viscosity can reach 100 times the viscosity of water, i.e. of of the order of 0.1 Pa.s.
  • the flow rates and diameters are adapted to the viscosity of the liquid.
  • the fluid may or may not be a food fluid.
  • FIG. 1 we can see a top view of an exemplary embodiment of a fluid circulation element 2 which is formed by a flexible element, which will also be designated “pocket” in the remainder of the description.
  • the fluid circulation element 2 comprises two sheets of flexible material fixed to one another so as to delimit between them a fluid circulation channel 4.
  • the channel has an inlet 5 and an outlet 6.
  • Inlet 5 is intended to be connected to a source of pressurized fluid and outlet 6 is intended to be connected for example to a fluid delivery valve.
  • the pocket 2 is formed by folding a sheet on itself.
  • the fluid circulation element 2 has for example a rectangular shape, the inlet 5 opening into a side edge of the circulation element and the outlet 6 opening into the same side edge or another side edge.
  • the inlet and outlet open into the same edge or adjacent edges.
  • the shape of the pocket is not limiting and a circular shape or any other is possible.
  • the channel 4 preferably has a shape maximizing the path of the fluid between the inlet 5 and the outlet 6 and the exchange surface, which increases the heat exchange between the fluid and a heat transfer element which will be described below below.
  • the shape of the channel is chosen according to the fluid circulating in it, in particular its viscosity and its thermal conductivity, depending on the flow rate to be transferred, in order to optimize the pressure losses, and the exchange coefficient.
  • the shape of the channel is chosen so that it covers the maximum surface area of the pocket.
  • the channel may run in a chevron or zigzag pattern between the inlet and outlet.
  • the pocket is made of a sufficiently flexible material such that, when a pressurized fluid circulates in the channel, the material deforms and then delimits a channel with an approximately rectangular section, the faces of the channel resting on the flat surface of the elements. heat exchange.
  • the ratio between the width and the length of the rectangular section is advantageously between 1 and 2.
  • the material of the bag is adapted to the fluid intended to circulate in it, so that it is inert with respect to it.
  • the sheets are made of polymer material suitable for food contact or of a composite material for example polymer-metal, for example aluminum, to improve the mechanical strength of the element and/or block the diffusion of gases, for example oxygen.
  • the material is also chosen based on the temperature to which the fluid will be heated or cooled.
  • the flexible bag can be made of polymer material, for example polyethylene or polyvinyl chloride, for example 20 ⁇ m thick or with aluminum sheets, for example 50 ⁇ m thick or in a composite material for example.
  • polymer-metal for example aluminum.
  • the channel is formed for example by welding the two sheets, for example by thermal welding. The manufacturing cost is then reduced. Alternatively, assembly by gluing can be carried out. The channel thus formed is waterproof. Manufacturing the channel or channels by welding allows great freedom in the shape of the channel or channels.
  • the fluid circulation element comprises connectors C1, C2 at the inlet 5 and at the outlet 6 respectively, facilitating the connection of the fluid circulation element with the source of the pressurized fluid and the evacuation and facilitating the placement and removal of the circulation element in the device.
  • These connectors C are advantageously of the quick connector type, for example they are push-pull type connectors or fittings, cooperating with fittings equipping the connection circuits to the fluid source and to the means of using the fluid.
  • the inlet and outlet of the pocket comprise threaded ends cooperating with threaded rings of the supply and use circuits, seals ensure sealing.
  • the connectors can be integrated into the fluid circulation element during the manufacture of the channel by welding, the sheets being welded to the connectors, for example also made of polymer material.
  • the pocket is therefore easily removable and replaceable.
  • a removable circulation element means a circulation element configured to be easily removed, replaced and replaced in the heat transfer device by a person who uses the heat device, but who is not not a specialist in heat transfer devices using hydraulic circuits under pressure.
  • the circuit to which the circulation element is connected is configured to allow this easy connection and disconnection.
  • a pocket comprising independent channels each provided with an inlet and an outlet does not depart from the scope of the present invention.
  • the device D1 comprises two heat exchange elements 8 in the form of a plate, arranged parallel to each other and delimiting a housing 10 intended to receive a pocket.
  • the connectors C1, C2 are arranged outside the housing to facilitate their connection.
  • the heat exchange elements 8 each comprise a channel 12 for circulating a heat transfer fluid intended to provide heat to the fluid circulating in the pocket or to extract heat from the fluid circulating in the pocket.
  • the heat transfer fluid is for example water, a refrigerant preferably which does not affect the ozone layer, nor contribute to the greenhouse effect, such as R1234yf, R1234ze, or R1233zd, CO 2 , certain hydrocarbons or a mixture of these fluids.
  • the channels 12 wind through the plates 8.
  • the plates 8 are made of a material that is a good thermal conductor, for example metal, such as steel, advantageously stainless steel, aluminum or copper.
  • the pocket 2 is deformed by the pressurized fluid circulating inside it, and the pocket comes to rest against the interior face of the heat exchange plates 8. The contact between the pocket and the plates is then surface , which ensures an increased exchange surface and very good heat transfer between the fluid and the plates.
  • the thickness of the pocket sheets is sufficiently low to limit heat exchange to a minimum.
  • the diameter of the channel is sufficiently small to allow heat exchange with all the fluid circulating in the channel.
  • the width L of the housing ie the distance between the two interior faces of the plates, is adapted to the maximum thickness of the deformed pocket so that the channel comes into contact with the interior faces of the plates.
  • the use of deformable flexible pockets makes it possible to adapt to the width of the housing and to ensure significant contact between the pocket and the heat exchange elements.
  • the exterior faces of the pocket and/or the interior faces of the plates can be covered with a material improving contact and thermal transfer between the pocket and the plates.
  • a material improving contact and thermal transfer between the pocket and the plates.
  • an oil or grease type material may be used.
  • the liquid water deposited by condensation on the plates may be sufficient to improve thermal contact.
  • the exterior walls 9 of the device are thermally insulated to limit thermal losses to the exterior and optimize heat transfers between the circulation element 2 and the transfer element 8. At least one wall allows easy access in the pocket for its installation and removal.
  • a heat transfer fluid circulates in the plates.
  • an electric heating means or a Peltier type electric cooling means is integrated into the plates.
  • the heat transfer element(s) may combine both one or more heat transfer channel(s) and electrical heating or cooling means.
  • the heat transfer fluid circulates in the two side walls of the housing 10.
  • it circulates in a single wall and the other wall is thermally insulated.
  • the bag is immersed in the heat transfer fluid; preferably the pocket is rigid as will be described below.
  • the pocket 2 is arranged in the housing 10, the inlet connector C1 is connected to a supply of the pressurized fluid S and the outlet connector C2 to an evacuation, for example to a tap R.
  • the fluid can be pressurized by means of a gas charged with gravity or a pushing fluid, for example tap water. Downstream, the pressure can be maintained by a pressure drop, for example by a tap R or a valve or by discharging the fluid into a pressure receptacle.
  • pocket 2 deforms in a direction normal to its surface and the walls of circulation channel 4 come into contact with plates 8.
  • a cold heat transfer medium circulates in plates 8 The heat from the fluid circulating in the channel is extracted by the heat carrier circulating in the plates 8. The temperature of the cold heat carrier is lower than the entry temperature of the fluid circulating in the pocket.
  • the arrows designate the direction of fluid circulation.
  • the temperature of the fluid between the channel inlet and the channel outlet is then lowered.
  • the operation of the device for heating a fluid is similar to the operation described above but a heat carrier, at a temperature higher than the temperature to which we want to heat the fluid, circulates in the plates
  • the inlet connector is connected to the first barrel, the barrel being connected to a source of CO 2 under pressure.
  • the beer circulates in the bag and comes out cooled at the draft tap.
  • the bag can be connected to a second barrel when the first barrel is empty.
  • the bag is purged and is disconnected from the barrel and the drawing tap, it is removed from the housing 10 and is discarded or sent to a recycling circuit, possibly with a view to recycling. refilling. It is replaced by a new pocket.
  • Maintenance of the beer distribution system is then significantly simplified. Indeed, the low cost of the bag combined with its ease of installation makes it possible to change it with sufficient frequency to ensure sanitary quality for food fluids or maintain satisfactory exchange conditions for a fluid making deposits. .
  • the invention makes it possible to maintain adequate sanitary conditions in the exchanger by changing the bag.
  • a pocket made of polymer material whose walls have a thickness of 20 ⁇ m, and comprising a channel whose substantially rectangular section has a length between 2 mm and 4 mm and a width between 6 mm and 12 mm and having a length between the two ends 5 and 6 between 4 m and 9 m.
  • the bag For a beer flow of 0.05 kg/s, maximum pressure losses at 700 mbar, the bag has an external format of around 2.2 times a standard A4 format, the A4 format being a rectangle of 21 cm ⁇ 29.7 cm.
  • the bags according to the invention make it possible to obtain substantially the same performances as a tube of circular section with a diameter of between 4 mm and 12 mm and a length of between 6 m and 15 m immersed in a bath of water and glycol at 20%.
  • the device D2 comprises three heat exchange elements 8 and two fluid circulation elements 2, each fluid circulation element 2 being arranged between two heat exchange elements 8.
  • a heat exchange element 8 participates at the delimitation of the two housings 10.
  • the two circulation elements 2 are connected in parallel to the power source and to the use, which makes it possible to increase the flow rate of fluid whose temperature is modified. It will be understood that more than two circulation elements each received in a dwelling can be implemented.
  • the pockets are each connected at the outlet to a separate outlet, for example to two taps.
  • the two fluid circulation elements are connected in series, which makes it possible either to vary the temperature of the fluid more significantly, or to increase the flow rate of tempered fluid.
  • the device comprises a heat exchange element 14 made of a good, or even very good, thermal conductor material, and two fluid circulation elements 2, 2' on either side of the thermal conductor element 14.
  • Each circulation element of fluid 2, 2' is connected to a source of fluid at different temperatures and to a different discharge.
  • the fluids circulating in the two fluid circulation elements 2 and 2' may be identical or different.
  • the heat exchange element is a metal, for example copper, aluminum or stainless steel.
  • the thickness of the heat exchange element can be between 2 mm and 5 mm.
  • the device comprises two housings 16 separated by the heat exchange element.
  • the width of the housing is sized to accommodate the two pockets 2, 2' and so that once deformed by the pressurized fluids they are in intimate contact with the heat exchange element 14.
  • the exterior walls 18 of the device are thermally insulated to limit thermal losses to the outside and optimize heat transfers between the two circulation elements.
  • the width of the housings 16 is chosen to ensure significant contact of the pockets against the heat exchange element 14.
  • the device according to Figure 5 may include more than one heat exchange element 14 and more than two fluid circulation elements.
  • the device comprises two heat exchange elements 14 and three fluid circulation elements.
  • the fluids circulating in the pockets 2 located at the ends are the same or are different, and the fluid circulating in the central pocket 2' is at a different temperature, it is then heated or cooled by the heat exchange with the other two fluids through the heat exchange elements 14.
  • the removable fluid circulation element is a rigid element, i.e. which does not deform or only slightly under the effect of the pressure circulating therein.
  • the fluid circulation element is made from two steel sheets, advantageously made of stainless steel, stamped and brazed to one another and delimiting the circulation channel between them, the ends of the channel comprise quick connectors, in a manner similar to pocket 2, which allows the rapid connection and disconnection of the circulation element with the fluid supply circuit.
  • stainless steel sheets have a thickness of 200 ⁇ m.
  • the distance between the heat exchange elements is chosen so as to allow the circulation element to be placed between the two heat exchange elements in contact with them.
  • the circulation element is removed from the heat exchange device and can be more easily cleaned outside the device, before being put back in place. It may be considered to mount a clean circulation element while the circulation element is cleaned, which makes it possible to reduce the time the device is not used.
  • the invention applies to the heating or cooling of liquid foodstuffs for catering or in a domestic setting.
  • the invention is particularly interesting for production lines in the food industry or food crafts or other industries which require maintenance of heat exchangers for sanitary maintenance, due to deposits or fluid changes.
  • the invention can be used for collective catering where large quantities of fluid must be brought to temperature for consumption, possibly in an unprogrammed manner.
  • the invention makes it possible to package different fluids in a versatile manner without prior heating or cooling time.
  • the invention can be applied to other food fluids or not, for example it can be used to apply heat treatment to fluids for subsequent use.
  • it can be envisaged to heat fluids containing biological cells or chemicals reacting under the effect of heat.
  • the variation in fluidity of the liquids after transformation and their compatibility with the material of the bag will be taken into account.
  • the invention makes it possible to avoid exchanger cleaning operations which are long and may require chemical products of the acid or base type which can be polluting and expensive. These operations also require control which is avoided thanks to the invention.

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

Claims (17)

  1. Wärmeaustauschvorrichtung zum Ändern der Temperatur mindestens eines ersten Fluids, umfassend mindestens ein Wärmeübertragungselement (8, 14) und mindestens ein Zirkulationselement (2) des ersten Fluids, das dazu konfiguriert ist, mit dem Wärmeübertragungselement (8, 14) in Kontakt zu stehen, wobei das Zirkulationselement des ersten Fluids einen Zirkulationskanal (4) des ersten Fluids zwischen einem Einlass (5) und einem Auslass (6) umfasst, von dem mindestens eine Wand dazu bestimmt ist, mit dem Wärmeübertragungselement in Kontakt zu stehen,
    dadurch gekennzeichnet, dass das Zirkulationselement (2) entfernbar in der Wärmeaustauschvorrichtung montiert ist und der Einlass (5) des Kanals einen ersten Anschluss umfasst, der dazu konfiguriert ist, das Zirkulationselement des ersten Fluids mit einem ersten Kreislauf zu verbinden, der mit einer Quelle des ersten Fluids in Verbindung steht, und der Auslass des Kanals einen zweiten Anschluss umfasst, der dazu konfiguriert ist, das Zirkulationselement des ersten Fluids mit einem zweiten Kreislauf zu verbinden, der mit Mitteln zur Nutzung des ersten Fluids in Verbindung steht, so dass das Zirkulationselement des ersten Fluids entfernbar ist.
  2. Wärmeaustauschvorrichtung nach Anspruch 1, wobei das Zirkulationselement (2) des ersten Fluids aus einem flexiblen Material hergestellt ist, das den Zirkulationskanal (4) des ersten Fluids zwischen dem Einlass (5) und dem Auslass (6) begrenzt, wobei das Zirkulationselement (2) des ersten Fluids dazu konfiguriert ist, sich zu verformen, wenn das erste Fluid unter Druck im Zirkulationskanal (4) zirkuliert, und mit dem mindestens einen Wärmeübertragungselement (8, 14) in Kontakt zu gelangen, so dass das erste Fluid Wärme mit dem Wärmeübertragungselement (8, 14) über das flexible Material austauscht.
  3. Wärmeaustauschvorrichtung nach Anspruch 2, wobei das Zirkulationselement (2) des ersten Fluids zwei übereinanderliegende Platten umfasst, wobei jede der Platten aus Polymer, Metall oder einem Verbundmaterial aus Polymer und Metall besteht, und wobei der Zirkulationskanal (4) durch Schweißnähte zwischen den beiden Platten gebildet wird.
  4. Wärmeaustauschvorrichtung nach Anspruch 3, wobei das Polymer Polyethylen ist und das Metall Aluminium ist.
  5. Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 4, wobei das Wärmeübertragungselement (8) mindestens einen Zirkulationskanal (12) eines Wärmeträgers umfasst.
  6. Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 5, wobei das Wärmeübertragungselement (8) elektrische Heizmittel umfasst.
  7. Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 6, umfassend mindestens zwei Wärmeübertragungselemente (8), die zwischen sich ein Gehäuse (10) begrenzen, das dazu konfiguriert ist, das Zirkulationselement (2) des ersten Fluids aufzunehmen.
  8. Wärmeaustauschvorrichtung nach Anspruch 7 in Kombination mit Anspruch 2, wobei der Abstand zwischen den beiden Wärmeübertragungselementen (8) derart ist, dass das Zirkulationselement (2) des ersten Fluids in seinem verformten Zustand in Kontakt mit den beiden Wärmeübertragungselementen (8) steht.
  9. Wärmeaustauschvorrichtung nach Anspruch 7 oder 8, umfassend mehrere Zirkulationselemente (2) des ersten Fluids, die dazu konfiguriert sind, parallel oder in Reihe gespeist zu werden, und mehrere Gehäuse (10), die jeweils ein Zirkulationselement (2) des ersten Fluids aufnehmen.
  10. Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 6, umfassend mindestens ein Zirkulationselement (2') eines zweiten Fluids, auf der dem Wärmeübertragungselement (14) in Bezug auf das Zirkulationselement (2) des ersten Fluids gegenüberliegenden Seite angeordnet ist, so dass dort eine Wärmeübertragung zwischen dem ersten Fluid und dem zweiten Fluid stattfindet.
  11. Wärmeaustauschvorrichtung nach Anspruch 10, wobei das Zirkulationselement (2') des zweiten Fluids aus einem flexiblen Material hergestellt ist, das einen Zirkulationskanal des zweiten Fluids zwischen einem Einlass und einem Auslass begrenzt, wobei das Zirkulationselement (2') des zweiten Fluids dazu konfiguriert ist, sich zu verformen, wenn das zweite Fluid unter Druck im Zirkulationskanal des zweiten Fluids zirkuliert.
  12. Wärmeaustauschvorrichtung nach einem der Ansprüche 1 bis 11, umfassend thermisch isolierende Außenwände (9, 18).
  13. System zum Ändern der Temperatur mindestens eines ersten Fluids, umfassend mindestens eine Wärmeaustauschvorrichtung nach Anspruch 7, 8 oder 9, eine Quelle eines ersten unter Druck stehenden Fluids (S) bei einer ersten Temperatur, die mit dem Einlass eines Zirkulationselements des ersten Fluids verbunden ist, eine Quelle des Wärmeträgers, die mit einem Wärmeübertragungselement verbunden ist, und Mittel zur Nutzung (R) des ersten Fluids bei einer zweiten Temperatur, die sich von der ersten Temperatur unterscheidet.
  14. System nach dem vorhergehenden Anspruch, das ein bedarfsgesteuertes Bierverteilungssystem bildet, wobei das erste Fluid Bier ist.
  15. System zum Ändern der Temperatur mindestens eines ersten Fluids, umfassend mindestens eine Wärmeaustauschvorrichtung nach Anspruch 10 oder 11, umfassend eine Quelle eines ersten unter Druck stehenden Fluids, die mit dem Zirkulationselement des ersten Fluids verbunden ist, und eine Quelle eines zweiten unter Druck stehenden Fluids, die mit dem Zirkulationselement des zweiten Fluids verbunden ist.
  16. Verfahren zum Verwenden eines Systems nach Anspruch 13 oder 14, umfassend:
    - Einrichten eines Zirkulationselements (2) des ersten Fluids zwischen zwei Wärmeübertragungselementen (8),
    - Verbinden des Zirkulationselements (2) des ersten Fluids mit der Versorgungsquelle (S) eines ersten unter Druck stehenden Fluids und Mitteln zur Nutzung (R) des ersten Fluids bei der zweiten Temperatur,
    - Entnehmen des ersten Fluids bei der zweiten Temperatur nach der Zirkulation des ersten Fluids im Zirkulationselement des ersten Fluids,
    - Trennen und Entfernen des Zirkulationselements (2) vom ersten Fluid,
    - Verbinden eines Zirkulationselements (2) des ersten neuen Fluids mit der Versorgungsquelle (S) des ersten Fluids und mit den Mitteln zur Nutzung (R) des ersten Fluids.
  17. Verfahren zum Verwenden eines Systems nach Anspruch 15, umfassend:
    - Einrichten eines Zirkulationselements (2) des ersten Fluids und eines Zirkulationselements (2') des zweiten Fluids auf beiden Seiten des Wärmeübertragungselements (14),
    - Verbinden des Zirkulationselements (2) des ersten Fluids mit der Versorgungsquelle des ersten unter Druck stehenden Fluids und mit den Mitteln zur Nutzung des ersten Fluids bei der zweiten Temperatur, und Verbinden des Zirkulationselements (2') des zweiten Fluids mit der Versorgungsquelle des zweiten unter Druck stehenden Fluids und mit den Mitteln zur Nutzung des zweiten Fluids,
    - Entnehmen des ersten Fluids bei der zweiten Temperatur nach der Zirkulation des ersten Fluids im Zirkulationselement (2) des ersten Fluids,
    - Trennen des Zirkulationselements (2) des ersten Fluids und/oder des Zirkulationselements (2') des zweiten Fluids und Entfernen des einen oder des anderen oder beider,
    - Verbinden eines Zirkulationselements (2) des ersten neuen Fluids mit der Versorgungsquelle des ersten Fluids und mit den Mitteln zur Nutzung des ersten Fluids und/oder Verbinden eines Zirkulationselements (2') des zweiten neuen Fluids mit der Versorgungsquelle des zweiten Fluids und mit den Mitteln zur Nutzung des zweiten Fluids.
EP22169975.4A 2021-05-06 2022-04-26 Wartungsarmes wärmetauschergerät Active EP4086555B1 (de)

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AUPP502698A0 (en) * 1998-08-04 1998-08-27 Andale Repetition Engineering Pty. Limited Beverage chiller
GB0603365D0 (en) * 2006-02-21 2006-03-29 Imi Cornelius Uk Ltd Beverage cooling
WO2011038891A2 (de) * 2009-09-29 2011-04-07 Geoclimadesign Ag Thermische speichervorrichtung
KR102082952B1 (ko) * 2010-10-04 2020-02-28 다나 캐나다 코포레이션 배터리를 위한 순응형 유체-냉각된 열교환기
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