EP3667214A1 - Appareil électroménager et procédé de fixation d'un évaporateur correspondant - Google Patents

Appareil électroménager et procédé de fixation d'un évaporateur correspondant Download PDF

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Publication number
EP3667214A1
EP3667214A1 EP19213088.8A EP19213088A EP3667214A1 EP 3667214 A1 EP3667214 A1 EP 3667214A1 EP 19213088 A EP19213088 A EP 19213088A EP 3667214 A1 EP3667214 A1 EP 3667214A1
Authority
EP
European Patent Office
Prior art keywords
heat
evaporator
inner container
conducting film
adhesive layer
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Withdrawn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
EP19213088.8A
Other languages
German (de)
English (en)
Inventor
Stefan Schedlbauer
Bernd Schlögel
Gabriel Kohler
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3667214A1 publication Critical patent/EP3667214A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/061—Walls with conduit means
    • 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
    • F25D23/00—General constructional features
    • F25D23/006—General constructional features for mounting refrigerating machinery components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular 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
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • the invention relates to a household refrigerator with a receiving space for food, which is delimited by an inner container and can be tempered by at least one evaporator attached to a wall surface of the inner container.
  • the invention also relates to a method for fastening an evaporator to a wall surface of an inner container.
  • the DE 10 2007 048 830 A1 discloses a device for producing a refrigeration device which has a container and a tube which is helically wound around the container for guiding a refrigerant, with a holding means for clamping the container and a device for applying the tube to the outside of the container.
  • the device has a pressure roller for an aluminum adhesive tape which is wrapped around the container before the tube is assembled.
  • a butyl adhesive is provided as an adhesive for connecting the tube to the strip of aluminum wrapped around the inner container.
  • the DE 697 09 232 T2 discloses a method for manufacturing evaporators for refrigeration machines, the evaporator having a hairpin coil with straight sections which are arranged between two metal sheets and are connected to them by means of an adhesive and by deforming at least one of the metal sheets.
  • the US 7,124,602 B2 discloses a refrigerator with an evaporation tube, which is attached directly to the outside surfaces of an inner housing with an adhesive layer. Then the evaporator tube on the inner housing with a thermal insulation between Inner and outer case is covered. So that the evaporator tube can be stored and transported, the adhesive layer has a peel-off tape before mounting on the refrigerator.
  • a household refrigeration device comprises a housing in which at least one receiving space for food is formed, which is delimited by an inner container and can be tempered by an evaporator attached to a wall surface of the inner container, the evaporator has an evaporator tube attached to a heat-conducting film by a first adhesive layer, wherein the first adhesive layer is formed from an adhesive based on acrylate or synthetic rubber.
  • gluing In general, there is the advantage of gluing that no extreme conditions are necessary during the joining process or during the connection of the evaporator to the inner container. While in joining processes such. B. welding or soldering, the parts to be exposed to high temperatures and causing thermal changes in the material properties, gluing avoids such conditions, so that temperature-sensitive materials such as Polystyrene or polypropylene, can be added. This enables the evaporator to be attached to the inner container by gluing with simple means and without thermal treatment.
  • pressure sensitive adhesives based on synthetic rubber are actually sensitive to low temperatures of less than minus 10 ° C and pressure sensitive adhesives based on acrylate actually have a weak initial adhesion, which has a particularly negative effect on the cycle time in the manufacturing process of a household refrigerator, the use of these pressure sensitive adhesives is for the Attaching an evaporator to an inner container in the area of household refrigerators is actually unusual.
  • pressure-sensitive adhesives based on acrylate or synthetic rubber have a low coefficient of thermal conductivity, so that the use of these pressure-sensitive adhesives in a heat transfer area between the evaporator and the receiving space is actually unusual for stored goods in a household refrigeration device.
  • An advantage of acrylate or synthetic rubber as an adhesive layer is, however, the high mechanical inherent strength, so that the heat-conducting film can be wetted with small layer thicknesses on the heat-conducting film. As a result, material costs and thus manufacturing costs can be significantly reduced.
  • the adhesive which is based on acrylate or synthetic rubber, no longer has to be temperature-controlled prior to processing as a pressure-sensitive adhesive and has to be applied with high precision or with few tolerances as a bead or as a narrow strip on the inner container or on the evaporator tube. Since this is omitted according to the present invention, there is a simplified manufacturing process and thus a more cost-effective fastening of an evaporator to an inner container of a household refrigeration device.
  • a “household refrigerator” is to be understood in particular as a cabinet-shaped device which is usually operated electrically and independently keeps the temperature inside low.
  • the interior of the refrigerator is cooled by means of a compressor that is often located on the rear and regulated by a temperature controller.
  • the cooling unit is a refrigeration machine that uses the physical effect of the heat of vaporization when the state of the unit changes from liquid to gaseous.
  • a refrigerant which is moved in a closed cycle, experiences different physical state changes in succession.
  • the gaseous refrigerant is first compressed by a cooling unit. It then condenses through the condenser, giving off heat.
  • the liquid refrigerant is then expanded via a throttle, for example an expansion valve or a capillary tube, due to the pressure change.
  • the refrigerant evaporates in the downstream evaporator while absorbing heat at a low temperature.
  • the cycle can now start again.
  • the process must be kept going from the outside by supplying mechanical work via the cooling unit.
  • the refrigerant absorbs heat at a low temperature level, e.g. 5 ° C cold inside the refrigerator, and releases it to the environment with mechanical work at a higher temperature level, e.g. 35 ° C condensing temperature in the condenser on the rear of the refrigerator.
  • Household refrigeration appliances are usually used for the storage of food.
  • the lower temperature causes chemical reactions and biological processes, for example Food inedible and medication unusable, slow down.
  • the usual operating temperatures inside domestic refrigeration units are between plus 2 ° C and plus 8 ° C in cold rooms, between minus 14 ° C and minus 18 ° C in freezer rooms and between minus 2 ° C and plus 4 ° C in freezer compartments.
  • the housing of the cooling compartments is thermally insulated in order to keep the energy consumption low to maintain the difference to the ambient temperature.
  • a “receiving space” is to be understood in particular to mean a space which is suitable for storing food and for arranging equipment elements and, if appropriate, cooling systems required for cooling the receiving space.
  • An “inner container” is to be understood in particular as a boundary wall of the receiving space, which is preferably formed from polystyrene.
  • the inner container of household refrigeration appliances is usually foamed with a thermal insulation made of rigid polyurethane foam.
  • the wall surfaces of the inner container on which the evaporator is fastened are preferably foam-side wall surfaces of the inner container.
  • Temporable should in particular be understood to be coolable or heatable.
  • Thermally conductive film is to be understood in particular to mean a film which has heat-conducting properties and which has a very thin layer thickness.
  • the heat-conducting film is processed into very thin layers by rolling and, in the technical sense, has a low bending stiffness.
  • Thermally conductive films usually have a layer thickness of 2 ⁇ m to 200 ⁇ m.
  • Evaporator is to be understood in particular as a component of a refrigeration cycle which extracts the heat from the storage space for stored goods.
  • Evaporator tube is to be understood in particular as a tube through which refrigerant flows.
  • the “evaporator” is preferably formed from an evaporator tube bent in a serpentine shape.
  • “Acrylate” is to be understood in particular as an adhesive or pressure-sensitive adhesive which is largely insensitive to oxidation and UV radiation and has good aging and temperature resistance. Thanks to the polar side chains, “Acrylate” shows good adhesion to polar materials such as glass and metal. Since “acrylate” has a weak initial adhesion and an adequate adhesive effect only develops over a longer period of time, the use of an "acrylate” based adhesive is rare in the manufacturing industry due to the extension of the cycle time.
  • Synthetic rubber is to be understood in particular as an adhesive which is distinguished by very high adhesive strengths under normal conditions and is particularly suitable for bonding non-polar materials, such as polyethylene, polypropylene or polystyrene.
  • non-polar materials such as polyethylene, polypropylene or polystyrene.
  • the “synthetic rubber” reacts sensitively to low temperatures of less than minus 10 ° C as well as to elevated temperatures of greater than 50 ° C, so that the application in the household refrigeration device area for the application of evaporators is surprising.
  • the heat-conducting film may be a metal film, in particular an aluminum film. It is thereby achieved that the heat-conducting film functioning as a carrier layer has sufficient heat conductivity.
  • a metal foil, in particular aluminum foil, enables very good heat transfer from the receiving space to the evaporator.
  • the heat-conducting film on a first adhesive surface may be wetted over the entire surface by the first adhesive layer.
  • the evaporator must be attached to the foam-side wall surface of the inner container with greater tolerances or with less precision in the manufacturing process.
  • the manufacture of the household refrigeration device according to the invention with appropriate fastening of an evaporator can be implemented more cost-effectively and in terms of process technology.
  • the complete wetting of the heat-conducting film with an adhesive layer results in better adhesion with the expanded polyurethane foam between the housing and the inner container.
  • weaknesses in heat insulation or cavities in the rigid polyurethane foam can be avoided.
  • the evaporator tube can have a first evaporator tube section and a second evaporator tube section running parallel to the first evaporator tube section, which are connected to one another in a heat-conducting manner by an integral cut of the heat-conducting film. It is thereby achieved that the heat-conducting film does not have to be attached to the inner container of the household refrigeration device in the form of a strip and in the longitudinal direction of the evaporator tube, but rather is glued to the inner container in large, one-piece blanks. Thus, several serpentine-shaped evaporator tube sections can be placed on the one-piece blank of the heat-conducting film.
  • a further advantage is that the large-area heat transfer surface enables more efficient cooling of the receiving space and more efficient operation of the evaporator, and the one-piece cut of the heat-conducting film means that there are no heat transfer breaks in the heat-conducting film, as is the case with multi-piece adhesive strips arranged in parallel.
  • the one-piece cut of the heat-conducting film essentially completely or at least mostly covers the at least one wall surface. This ensures that the cooling takes place over a large area or over the entire wall surface of the inner container. Due to the one-piece cutting of the heat-conducting film over a large wall area of the inner container, particularly efficient cooling of the receiving space can be achieved with simple means, since there are no heat transfer breaks in the heat-conducting film as with adhesive strips arranged in parallel.
  • the one-piece cut of the heat-conducting film covers several wall surfaces of the inner container.
  • the one-piece Cutting the heat-conducting film completely or at least mostly covers the several wall surfaces.
  • the one-piece cut of the thermal foil preferably extends over an edge between the plurality of wall surfaces of the inner container and preferably covers this edge. This means that the cooling of the receiving space is possible with simple means over several wall surfaces.
  • the one-piece blank extending over several wall surfaces of the inner container has no heat transfer bridges, so that the cooling of the receiving space or the operation of the evaporator is more efficient.
  • the fastening of the evaporator or the manufacture of the household refrigeration device can be accelerated, since the heat-conducting film does not have to be placed in strips on the inner container.
  • the evaporator tube can extend over several wall surfaces of the inner container. It is thereby achieved that the evaporator can extract the heat from the receiving space over several wall surfaces of the inner container. Accordingly, the evaporator can be operated more efficiently and the household refrigerator can be operated more energy-efficiently.
  • the heat-conducting film can have a layer thickness of at most 100 ⁇ m, preferably a layer thickness of max. Have 50 microns. It is thereby achieved that the heat transfer between the receiving space and the evaporator tube is improved, since the layer thickness of the heat-conducting film and thus the heat-conducting resistance is very low. Accordingly, the cost of materials for the heat-conducting film is reduced and the evaporator can be operated more efficiently and the household refrigeration device can be operated more energy-efficiently.
  • the first adhesive layer can have a layer thickness of 30 ⁇ m to 70 ⁇ m, preferably a layer thickness of 30 ⁇ m to 50 ⁇ m.
  • the layer thickness of the adhesive layer is significantly less than that of a butyl adhesive layer.
  • the pressure sensitive adhesive which is based on acrylate or synthetic rubber, has a high inherent strength, so that the heat-conducting film can be wetted with smaller layer thicknesses of the adhesive based on acrylate or synthetic rubber, and still have sufficient adhesion of the evaporator tube even at temperatures from -40 ° C to +10 ° C in the operating state of the evaporator.
  • the lower layer thickness of the adhesive reduces the heat conduction resistance, which means that the evaporator can be operated more efficiently and the household refrigerator can be operated more efficiently.
  • the heat-conducting film may be attached to the at least one wall surface of the inner container by means of a second adhesive layer which is formed on a second adhesive surface of the heat-conducting film and is formed from an adhesive based on acrylate or synthetic rubber.
  • the second adhesive surface is preferably located on a surface of the heat-conducting film that is opposite the first adhesive surface.
  • the identical adhesive namely an adhesive based on synthetic rubber or acrylate, can be used for the bonds between the heat-conducting film and the inner container as well as the heat-conducting film and the evaporator tube.
  • the second adhesive layer can have a layer thickness of 30 ⁇ m to 70 ⁇ m, preferably a layer thickness of 30 ⁇ m to 40 ⁇ m. Since an adhesive based on acrylate or synthetic rubber has a very high inherent strength, the layer thicknesses can be chosen to be very thin. The lower layer thickness of the adhesive reduces the thermal conduction resistance, which means that the evaporator can be operated more efficiently and the household refrigerator can be operated more efficiently.
  • the first adhesive layer and the second adhesive layer can have different layer thicknesses, preferably the layer thickness of the first adhesive layer can be greater than the layer thickness of the second adhesive layer. Since the adhesive connection between the evaporator tube and the heat-conducting film is exposed to greater mechanical stresses in the manufacturing process, it is advantageous to that the adhesive layer or first adhesive layer facing the evaporator tube has a greater layer thickness. On the other hand, the second adhesive layer or the adhesive layer facing the inner container can have a smaller layer thickness than the first adhesive layer, as a result of which the material and manufacturing costs can be further reduced.
  • the heat conduction resistance can be reduced by a smaller layer thickness of the adhesive, as a result of which the evaporator can be operated more efficiently and the household refrigeration device can be operated more efficiently.
  • the heat-conducting film with an applied first adhesive layer and an applied second adhesive layer and at least one cover film covering the first adhesive layer can form a preassembly unit. This ensures that the heat-conducting film can be prefabricated with the appropriate adhesive layers and a cover film before it is installed on the household refrigerator. This enables cost-effective production of the household refrigeration device equipped with the heat-conducting film.
  • the evaporator tube can be attached in a longitudinally curved manner to the at least one wall surface of the inner container or wound helically around the inner container.
  • the evaporator and the heat-conducting film connected to the evaporator tube by the first adhesive layer can form a preassembly unit.
  • the evaporator is thus designed as a pre-assembled assembly unit or assembly. This has the advantage that the pre-assembled assembly unit or assembly can be manufactured in the pre-assembly and the assembly assembly only has to be attached to the inner container by the second adhesive layer when assembling the household refrigeration device.
  • the refrigerant tube may have a straight wall section and a curved wall section, the straight wall section facing the inner container being connected to the heat-conducting film by the first adhesive layer and the curved wall section not being connected to the heat-conducting film by the first adhesive layer is.
  • the method can include peeling off a cover film from the first adhesive layer.
  • the one-piece blank can also cover substantially or at least the majority of several of the wall surfaces of the inner container.
  • the evaporator can also consist of a plurality of evaporator tube sections 311, 312 which are connected to one another in a serpentine shape and which are pressed onto the one-piece blank 201 of the heat-conducting film 20, 22.
  • the method according to the invention has the advantage that the evaporator is fastened is less complex compared to the prior art and thus the manufacturing process is easier and more efficient to implement.
  • top, bottom, front, “back,” horizontal “,” vertical “,” depth direction “,” width direction “,” height direction “etc. are in accordance with the intended use and arrangement of the device and at to a given position and orientation given in front of the device and looking in the direction of the device.
  • a household refrigerator 1 is provided with a housing 2 in which at least one receiving space 3 for food is formed.
  • the receiving space 3 can be a freezer compartment 4 or a refrigerator compartment 5.
  • the freezer compartment 4 preferably has temperatures of -14 to -18 ° C.
  • the cooling space 5 preferably has temperatures of 2 ° C. to 8 ° C.
  • the cooling space 5 can also be designed as a zero degree compartment, in which fish, meat or vegetables can usually be stored.
  • the freezer compartment 4 has a freezer compartment door 9 with a freezer compartment door handle 10.
  • An evaporator 6 is provided for cooling the freezer compartment 4.
  • the first evaporator 6 is arranged on an outer wall of the first inner container 7 which faces the housing 2.
  • the first evaporator 6 is thus arranged in the foam-side area of the household refrigeration device 1 and is foamed by a heat insulation foam.
  • a receiving space 3 of the cooling space 5 is delimited by a second inner container 11 and has a second evaporator 12 in the area of the household refrigeration device 1 on the foam side.
  • the cold room 5 has a cold room door 14 with a cold room door handle 15, which closes the receiving space 3 of the cold room 5. So that the first evaporator 6 and the second evaporator 12 can be supplied with refrigerant, the household refrigeration device has a machine room 13 with a compressor 8 arranged therein.
  • the machine room 13 is formed by a machine room housing 16 in the rear area of the household refrigerator 1.
  • FIG 2 a perspective view of an inner container 11 of the household refrigeration device 1 according to the invention is shown.
  • the lower inner container 11 has a top surface 17, a bottom surface 18, a rear wall surface 19 and a side wall surface 21.
  • the transitions between the wall surfaces 21, 17, 19 are designed as edges 29.
  • a heat-conducting film 20, 22 is arranged on the rear wall surface 19 of the second inner container 11 and is used as a one-piece blank 201 on the rear wall surface 19 of the second inner container 11.
  • the one-piece blank 201 has a tear-off edge 30 which forms the edge sections of the blank 201.
  • the one-piece blank 201 of the heat-conducting film 20, 22 essentially completely covers the rear wall surface 19 of the second inner container, at least the blank 201 of the heat-conducting film 20, 22 covers the predominant or majority surface of the rear wall surface 19 of the second inner container 11.
  • the first inner container 7 encloses one Freezer compartment 4.
  • the first inner container 7 enclosing the freezer compartment 4 has a rear wall surface 19, a top wall surface 17, a bottom wall surface 18 and a side wall surface 21.
  • the transitions between the wall surfaces 19, 17, 18 and 21 are designed as edges 29.
  • a blank 201 of the heat-conducting film 20, 22 covers a top wall surface 17 and a rear wall surface 19 of the first inner container 7 surrounding the freezer compartment 4.
  • the one-piece blank 201 of the heat-conducting foil 20, 22 essentially covers the entire top wall surface 17 and rear wall surface 19 of the freezer compartment 4 surrounding first inner container 7, at least the one-piece blank 201 of the heat-conducting film 20, 22 covers the predominant or majority of the surface of the top wall surface 17.
  • the one-piece blank 201 of the heat-conducting film 20, 22 on the first inner container 7 extends over an edge 29 between the top wall surface 17 and the rear wall surface 19.
  • FIG 3 a further perspective view of the inner container 7, 11 of the household refrigeration device 1 according to the invention is shown.
  • the embodiment differs according to Figure 3 in that the second inner container 11 and the first inner container 7 are connected to one another in one piece.
  • the one-piece blanks 201 of the first inner container 7 and the second inner container 11 are covered with evaporator tubes 31.
  • the evaporator tubes 31 form a first evaporator 6 and a second evaporator 12.
  • the first evaporator 6 and the second evaporator 12 can be two evaporators connected in parallel to one another or can be evaporators 6, 12 connected in series with one another.
  • first evaporator 6 and the second evaporator 12 can be connected in series, but the second downstream evaporator 12 can be supplied directly with refrigerant by means of a refrigerant line or throttle line 35 bridging the first evaporator 6.
  • the first evaporator 6 and the second evaporator 12 are connected in series or connected in succession in the direction of flow of the refrigerant.
  • the throttle tube 35 injects the refrigerant pumped by the compressor 8 in the refrigerant circuit directly into the first evaporator 6. When the refrigerant has flowed through the first evaporator 6, it flows into the second downstream evaporator 12 of the cooling space 5.
  • the first evaporator 6 is in contact with the Heat-conducting film 22 of the first inner container 7 and the second evaporator 12 are in contact with the heat-conducting film 20 of the second inner container 11. Because the heat-conducting film 20 covers almost the entire surface of the rear wall surface 19 of the second inner container 11 and the heat-conducting film 22 essentially the entire surface the back panel 19 and top panel 17 of the first Covered inner container 7, a large-scale and efficient cooling of the refrigerator 5 and the freezer 4 is possible.
  • the evaporators 6, 12 each have a first straight evaporator tube section 311 and a second straight evaporator tube section 312.
  • the first straight evaporator tube section 311 and the second straight evaporator tube section 312 are connected to one another in a heat-conducting manner by an integral blank 201. This has the advantage that a large-area and homogeneous removal of the heat from the cooling space 5 and the freezer space 4 is made possible.
  • a heat exchange takes place between a suction pipe 46, in which the gaseous refrigerant flows off from the second evaporator 12, and the throttle pipe 35, which is referred to as the first heat exchanger section 47.
  • the throttle tube 35 is in direct contact with the intake manifold 46.
  • the warm throttle tube 35 can dissipate heat via the intake manifold 46 before entering an evaporator 6, 12, which increases the efficiency of the refrigerant circuit or the efficiency of the Evaporator 6, 12 can be further increased.
  • a second heat exchanger section 48 is located between a further section of the throttle tube 35 and a connecting line 50 between the first evaporator 6 and the second evaporator 12.
  • FIG 4 a sectional view of the inner container 7, 11 of the household refrigeration device 1 according to the invention is shown.
  • the illustration shows that the cut 201 of the heat-conducting film 20, 22 extends from a first wall surface of the inner container 7, 11 via an edge 29 to a second wall surface of the inner container 7, 11.
  • the blank 201 of the heat-conducting film 20, 22 is wetted with a first adhesive layer 26 in the direction of the refrigerant tube 31.
  • the first adhesive layer 26 is provided for fastening the evaporator tube 31 of the evaporator 6, 12 to the inner container 7, 11 via the heat-conducting film 20, 22.
  • the first adhesive layer 26 is formed from an adhesive based on acrylate or synthetic rubber.
  • the one-piece blank 201 of the heat-conducting film 20, 22 is wetted in the direction of the inner container 7, 11 with a second adhesive layer 27.
  • the second adhesive layer 27 is provided for attaching the heat-conducting film 20, 22 to the inner container 7, 11.
  • the second adhesive layer 27 is formed from an adhesive based on acrylate or synthetic rubber.
  • the one-piece blank is preferably 201 of the heat-conducting film 20, 22 is completely wetted with the first adhesive layer 26 on its surface facing the evaporator tube 31 and completely wetted with the second adhesive layer 27 on its surface facing the inner container 7, 11. This ensures sufficient adhesion to the inner container 7, 11 and to the evaporator tube 31.
  • the evaporator tube 31 can be attached to the inner container 7, 11 in the manufacturing process with higher manufacturing tolerances, since a precise positioning of the evaporator tube 31 is not required. So that the one-piece blank 201 of the heat-conducting film 20, 22 can be pre-assembled, there is a cover film 28 on the surface of the heat-conducting film 20, 22 facing the evaporator tube. The cover film 28 is attached to the inner container 7, 11 or to the front of the evaporator tube 31 one-piece blank 201 of the heat-conducting film 20, 22 glued to the inner container 7, 11 is peeled off.
  • FIG. 5 A further sectional view of the inner container 7, 11 with attached evaporator 6, 12 of the household refrigeration device 1 according to the invention is shown.
  • the evaporator 6, 12 or the evaporator tube 31 has a first evaporator tube section 311 and a second evaporator tube section 312 running parallel to the first evaporator tube section 311.
  • the first evaporator tube section 311 and the second evaporator tube section 312 are fastened to the inner container 7, 11 via a one-piece blank 201 of the heat-conducting film 20, 22, the one-piece blank 201 of the heat-conducting film 20, 22 being attached to a surface or first surface facing the evaporator tube sections 311, 312
  • Adhesive surface 202 has a first adhesive layer 26 and a second adhesive layer 27 on a surface or second adhesive surface 203 facing the inner container 7, 11.
  • the first adhesive layer 26 and the second adhesive layer 27 are formed from an adhesive based on acrylate or synthetic rubber.
  • the one-piece blank 201 of the heat-conducting film 20, 22 is formed as large as possible, at least the first evaporator tube section 311 and the second evaporator tube section 312 are thermally conductively connected to one another by the one-piece blank 201 of the heat-conducting film 20, 22.
  • the large, one-piece blank 201 of the heat-conducting film 20, 22 ensures that the largest possible cooling of the receiving space (not shown) by the evaporator 6, 12 can take place over the wall surfaces of the inner container 7, 11.
  • the heat-conducting film 20 has 22 has a layer thickness D2 of at most 100 ⁇ m, preferably a layer thickness D2 of 40 ⁇ m to 50 ⁇ m.
  • the first adhesive layer 27 has a layer thickness D3 of 30 ⁇ m to 70 ⁇ m, preferably a layer thickness D3 of 40 ⁇ m to 60 ⁇ m.
  • the second adhesive layer 27 has a layer thickness D1 of 30 ⁇ m to 70 ⁇ m, preferably a layer thickness of 30 ⁇ m to 40 ⁇ m.
  • the first adhesive layer 26 and the second adhesive layer 27 have different layer thicknesses D1, D3.
  • the layer thickness D3 of the first adhesive layer 26 is greater than the layer thickness D1 of the second adhesive layer 27.
  • the cut surface of the refrigerant pipe sections 311, 312 has a straight wall section and a curved wall section, the straight wall section 311a, 312a facing the inner container 7, 11 being connected to the heat-conducting film 20, 22 by the first adhesive layer 26 and the curved wall section 311b, 312b is not connected to the heat-conducting film 20, 22 by the first adhesive layer 26.
  • the refrigerant pipe sections 311, 312 have according to Figure 5 no circular cross-section, but are squeezed at height H.
  • the space between the housing wall 2 and the inner container 7, 11 is filled with a heat insulation foam 60, namely rigid polyurethane foam, for heat insulation of the household refrigeration device.
  • FIG. 6 A flowchart with a method for fastening an evaporator 6, 12 to a wall surface 17, 18, 19, 21 of an inner container 7, 11 of the household refrigeration appliance 1 according to the invention is shown.
  • step A an inner container 7, 11 with at least one wall surface 17, 18, 19, 21 is provided.
  • step B a one-piece blank which can be covered essentially or at least mostly at least one wall surface 17, 18, 19, 21 of the inner container 7, 11 is formed
  • Thermally conductive film 20, 22 is provided, which is wetted on a first adhesive surface 202 with a first adhesive layer 26 made of an adhesive based on acrylate or synthetic rubber and on a second adhesive surface 203 with a second adhesive layer 27 made of an adhesive based on acrylic or synthetic rubber.
  • step C a wall surface 17, 18, 19, 21 of the inner container 6, 7 is completely or at least mostly covered with the one-piece blank 201 of the heat-conducting film 20, 22 and the one-piece blank 201 of the heat-conducting film 20, 22 is attached by means of the second adhesive layer 27 .
  • step D the evaporator 6, 12 formed from an evaporator tube 31 is pressed onto the first adhesive layer 26 of the one-piece blank 201 of the heat-conducting film 20, 22.
  • the evaporator can consist of a plurality of evaporator tube sections 311, 312 which are connected to one another in a serpentine shape and which are pressed onto the one-piece blank 201 of the heat-conducting film 20, 22.
  • the method can include peeling off a cover film from the first adhesive layer.
  • the one-piece blank 201 of the heat-conducting film 20, 22 can also cover substantially or at least the majority of several of the wall surfaces 17, 18, 19, 21 of the inner container 7, 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Refrigerator Housings (AREA)
EP19213088.8A 2018-12-11 2019-12-03 Appareil électroménager et procédé de fixation d'un évaporateur correspondant Withdrawn EP3667214A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018221407.7A DE102018221407A1 (de) 2018-12-11 2018-12-11 Haushaltskältegerät und Verfahren zum Befestigen eines Verdampfers dafür

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EP3667214A1 true EP3667214A1 (fr) 2020-06-17

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EP (1) EP3667214A1 (fr)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850013A1 (de) * 1998-10-30 2000-05-04 Kme Schmoele Gmbh Plattenförmiges Wärmeaustauscherelement
EP1016838A1 (fr) * 1998-12-28 2000-07-05 Fieramonte, Roberto Un conteneur frigorifique amélioré et son procédé de fabrication
DE69709232T2 (de) 1996-05-06 2002-07-18 Whirlpool Corp., Benton Harbor Verfahren zur Herstellung von Verdampfern für Kältekreisläufe,und der hergestellte Verdampfer
US7124602B2 (en) 2003-01-29 2006-10-24 Lg Electronics Inc. Direct cooling type refrigerator and evaporating pipe fixing method in the refrigerator
DE102007048830A1 (de) 2007-10-11 2009-04-16 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Herstellung eines Kältegeräts
CN102967089A (zh) * 2012-12-17 2013-03-13 合肥美的荣事达电冰箱有限公司 用于冰箱的板管蒸发器及其制造方法和冰箱
DE102013203534A1 (de) * 2013-03-01 2014-09-04 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät und Verdampfer dafür

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69709232T2 (de) 1996-05-06 2002-07-18 Whirlpool Corp., Benton Harbor Verfahren zur Herstellung von Verdampfern für Kältekreisläufe,und der hergestellte Verdampfer
DE19850013A1 (de) * 1998-10-30 2000-05-04 Kme Schmoele Gmbh Plattenförmiges Wärmeaustauscherelement
EP1016838A1 (fr) * 1998-12-28 2000-07-05 Fieramonte, Roberto Un conteneur frigorifique amélioré et son procédé de fabrication
US7124602B2 (en) 2003-01-29 2006-10-24 Lg Electronics Inc. Direct cooling type refrigerator and evaporating pipe fixing method in the refrigerator
DE102007048830A1 (de) 2007-10-11 2009-04-16 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zur Herstellung eines Kältegeräts
CN102967089A (zh) * 2012-12-17 2013-03-13 合肥美的荣事达电冰箱有限公司 用于冰箱的板管蒸发器及其制造方法和冰箱
DE102013203534A1 (de) * 2013-03-01 2014-09-04 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät und Verdampfer dafür

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