EP3425313B1 - Appareil frigorifique - Google Patents

Appareil frigorifique Download PDF

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Publication number
EP3425313B1
EP3425313B1 EP18177206.2A EP18177206A EP3425313B1 EP 3425313 B1 EP3425313 B1 EP 3425313B1 EP 18177206 A EP18177206 A EP 18177206A EP 3425313 B1 EP3425313 B1 EP 3425313B1
Authority
EP
European Patent Office
Prior art keywords
refrigeration appliance
heat conductive
inner container
tube
evaporator
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.)
Active
Application number
EP18177206.2A
Other languages
German (de)
English (en)
Other versions
EP3425313A1 (fr
Inventor
Bernd Schlögel
Berthold Pflomm
Christian Hein
Stefan Holzer
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 EP3425313A1 publication Critical patent/EP3425313A1/fr
Application granted granted Critical
Publication of EP3425313B1 publication Critical patent/EP3425313B1/fr
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Classifications

    • 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

Definitions

  • the present invention relates to a refrigeration device, in particular a domestic refrigeration device, with an inner container, a heat-conducting layer attached to an outside of the inner container, and an evaporator tube which is arranged on the heat-conducting layer in order to form an evaporator.
  • the heat-conducting layer is a stiff circuit board made of highly thermally conductive metal, on one side of which the evaporator tube is soldered or coated with a holding material layer adhering to the heat-conducting layer and the tube the like is attached.
  • the evaporator is completely prefabricated and inserted into the refrigeration device as a unit.
  • One object of the present invention is to create a refrigeration device that can be produced in a variety of models in a simple and inexpensive manner.
  • the evaporator tube and the heat-conducting layer can be attached to one another by simply pressing against one another by means of the first adhesive layer, there is no need to prefabricate the complete evaporator; on the contrary, the attachment of the evaporator tube to the heat-conducting layer is rather simplified in that the heat-conducting layer is previously attached to the inner container and can then no longer evade the evaporator tube.
  • the heat-conducting layer therefore does not itself need to be dimensionally stable in order to be able to withstand the pressure of the evaporator tube when it is pressed against it; a film can therefore be used, a film here being understood to mean any material layer whose resistance to deformation is lower than that of a wall of the inner container to which the film is attached.
  • the application of the adhesive layer is made easier if, when attaching the evaporator tube, it is not necessary to pay close attention to the overlap with the adhesive layer.
  • the adhesive layer can be applied to the evaporator tube; However, this is rather cumbersome in the absence of larger, flat surfaces on the evaporator tube. It is simpler if the adhesive layer is attached to the heat-conducting layer, but is not limited to the parts of the heat-conducting layer covered by the evaporator tube, but rather may also have areas that bear against the heat-conducting layer without being covered by the evaporator tube.
  • the heat-conducting layer is preferably covered over the entire surface by the first adhesive layer.
  • a second adhesive layer can be provided in order to attach the heat-conducting layer to the inner container.
  • the heat-conducting layer can in particular be designed as a self-adhesive film, i.e. provided with an adhesive layer on one or both sides.
  • the heat-conducting layer can be distributed over several wall surfaces of the inner container.
  • the heat-conducting layer can consist of one or more one-piece surface sections, which are briefly referred to below as blanks, regardless of whether they are actually obtained from a flat starting material by cutting or by other means, for example by tearing.
  • a one-piece, cohesive cut of the heat-conducting layer can bridge at least one edge between two of the wall surfaces of the inner container.
  • the evaporator tube can and should also extend over the plurality of wall surfaces.
  • the two evaporator sections can be formed beforehand in the same plane and then attached to the heat-conducting layers of the two inner containers.
  • the evaporator section of one of these inner containers extends over several wall surfaces and a part of one of these evaporator sections is folded out of the plane for this purpose, it may be necessary to bring the two evaporator sections closer together before attachment to the inner containers, whereby the connecting pipe section is forced assume a curved shape.
  • the first internal heat exchanger can in particular be formed in that the connecting pipe section and the throttle pipe are held in close contact with one another by means of a wrapped band, a hose or the like.
  • a second internal heat exchanger can be formed by the throttle tube and a suction tube extending from the second evaporator.
  • Fig. 1 shows a schematic perspective view of two inner containers 1, 2 of a combination refrigeration device.
  • the inner containers 1, 2 are deep-drawn from flat plastic material in a manner known per se.
  • the inner containers 1, 2 are each approximately cuboid with five wall surfaces that are approximately mutually orthogonal to one another (apart from a necessary draft angle) and one (in the perspective of FIG Fig. 1 downward facing) open front.
  • the inner container could be made in one piece and coherently from a single piece of flat material; Separate production is preferred here in order to have free access to those wall surfaces 3, 4 of the inner containers that are closely opposite one another in the assembled state before the inner containers 1, 2 are installed in a refrigeration device.
  • the inner container 2 is installed above the inner container 1 in the refrigeration device, which is why the wall surface 3 is also referred to below as the ceiling and the wall surface 4 as the floor.
  • the inner container 1 is intended for a normal refrigerator compartment; To cool this, an evaporator is sufficient, which only takes up part of one of the five wall surfaces, namely the rear wall 5. Accordingly, on this part of the rear wall 5 in Fig. 1 a heat-conducting layer 6 is shown, which will form part of this evaporator on the fully assembled refrigeration device. The remainder of the rear wall 5 as well as the other wall surfaces of the inner container 1, ie side walls 7, are in Fig. 1 The bottom, not shown, and the ceiling 3, remain free from the heat-conducting layer 6.
  • the inner container 2 is provided for a freezer compartment; In order to cool it, the ratio of evaporator surface to volume or surface area in the inner container 2 must be greater than in the inner container 1.
  • a heat-conducting layer 8 therefore extends here from one (in Fig. 1 the bottom (not visible, facing the inner container 1) via a rear wall 9 except for a ceiling 10 of the inner container 2.
  • the heat-conducting layers 6, 8 are formed in that blanks of a self-adhesive film 11 are glued onto the outer sides of the inner containers 1, 2.
  • the film 11 comprises an adhesive on the outside of the inner container 1 or 2 inner adhesive layer 12, the heat-conducting layer 6 or 8 made of metal, in particular aluminum, an outer adhesive layer 13 and first of all a cover layer 14, e.g. made of silicone paper, which gives the film the tear resistance required for unwinding from a supply roll and that of the outer adhesive layer 13 is easily removable.
  • the wall thickness of the heat-conducting layer 6 is small compared to that of the inner container 1 or 2, so its rigidity is low, so that the film 11 also clings tightly to the inner container 2 along edges 15 between the wall surfaces 4, 9, 10.
  • the film 11 can be applied by first detaching a front end of the film from a supply roll and attaching it to the inner container 1 or 2, then unwinding the required length of the film 11 from the supply roll by moving the supply roll along the wall surface of the inner container 1 to be glued and applied to the wall surface and finally the glued-on part of the film 11 is separated from the supply roll.
  • the resulting cutting or tear-off edges are in Fig. 1 denoted by 16. While the inner container 2 is being glued with the film 11, the supply roll is moved along its bottom 4, rear wall 9 and ceiling 10 and is unwound in the process.
  • Fig. 3 shows the two inner containers 1, 2 at the distance that they should have in the fully assembled refrigeration device, and an evaporator tube 17, which is prepared for attachment to the inner containers 1, 2 by being in a form that the later course of the evaporator tube 17 on the inner containers 1, 2 pretends to be wrapped around projections 18 of a flat work surface 19.
  • the evaporator tube 17 is tapered at an injection point 20 and is soldered to a throttle tube 21, the free cross section of which is considerably smaller than that of the evaporator tube 17 of working document 19 fill in evenly.
  • the meander 22 is followed downstream by a pipe section 24 which has an adjoining second region 25 the working document 19 is bridged over a short path, and this is in turn followed by meanders 26 in a subsequent area 27. At least one meander 28 of area 25 adjoins the meander 26 of area 27 downstream.
  • a section 29 of the evaporator tube 17 runs past the area 27 to a fourth area 30 of the working document 19 to be connected to a refrigeration device with a (not shown) compressor.
  • the throttle tube 21 is kept in close contact with the section 29 by an adhesive tape 33 wrapped around both of them and thus forms a first internal heat exchanger 34; accordingly, the throttle tube 21 and the suction tube 32 are bundled over at least part of their length to form a second internal heat exchanger 35.
  • the evaporator tube of the second area 25 is first placed on the rear wall 9 of the inner container 2 and the evaporator tube of the second area 30 is placed on the rear wall of the inner container 1 and glued by pressing.
  • the evaporator tube of the first area 23 is pivoted against the ceiling 10 of the inner container 2 and the evaporator tube of the third area 27 is pivoted against the floor thereof and is glued there.
  • Both inner containers 1, 2 are pushed against each other until their distance from one another corresponds to that in Fig. 3 shown below.
  • the section 29 of the evaporator tube 17 assumes a V-shaped bend. The result is in Fig. 4 shown.
  • the part of the evaporator tube 17 located downstream of section 29 forms an evaporator 36 on the rear wall 5 of the normal refrigerator compartment, the upstream part forms an evaporator 37 which is distributed over three wall surfaces of the inner container 2 of the freezer compartment
  • Refrigerant which flows in from a condenser (not shown) via the throttle tube 21 after the refrigeration device has been completed, first passes through the second inner heat exchanger 35, where in a first step it is precooled in countercurrent with refrigerant vapor from the evaporator 37, then the first inner heat exchanger 34 where it is cooled one more time and reaches the throttle point 20. From there, it first circulates along the ceiling 10, then the floor and finally the rear wall 9 of the inner container 2.
  • Fig. 5 shows the inner container 2 during the application of the film 11 according to a modified embodiment.
  • the film here not only covers the bottom 4, rear wall 9 and ceiling 10 of the inner container 2, but also side walls 38.
  • the same as with reference to FIG Fig. 1 described a first blank 39 of the film drawn in one piece over the bottom 4, rear wall 9 and ceiling 10, and a second blank 40 is just being unwound from the supply roll designated here as 41.
  • One end 42 of the blank 40 adheres to the side wall 38 facing the viewer. From there, the blank extends over the ceiling 10 to the opposite side wall, which in the configuration shown is in the process of being covered with the film 11.
  • the covering with the film 11 is complete when the roll 41 has again reached the side wall 38 facing the viewer and a second end of the unwound film overlaps the end 42.
  • the two ends of the blank 40 could also be attached to the bottom 4 or the top 10 of the inner container. It is also conceivable, as in Fig. 6 shown to attach a blank 43 to each side wall 38, the ends of which overlap with the first blank 39 at the bottom 4 and ceiling 10, respectively.
  • the large-area contact between the blanks 39, 40 or 39, 43 ensures that the side walls 38 are cooled even when the evaporator tube 17 itself does not reach the side walls 38.
  • the evaporator tube 17 can also extend as far as the side walls 38.
  • Fig. 7 shows an evaporator tube 17 formed for this purpose.
  • the meanders 22 of the first area 23 are longer than the width of the inner container 2, so that when the evaporator tube 17 is mounted on the inner container 2 as described above, the ends of these meanders 22 over the side
  • the edges of the ceiling 10 protrude and can be bent along these edges in order to come to rest on the side walls 38 and to adhere to the film 11 attached there.
  • the side walls 38 can also be accessed from other wall surfaces of the inner container 2.
  • the in Fig. 8 The arrangement shown, the meander or meanders 28 of the rear wall 9 are extended so that they can be folded over along the lateral edges of the rear wall 9 and brought into contact with the side walls.
  • the meander of the floor 10 could also be lengthened and folded up onto the side walls 38;
  • the various possibilities mentioned above can be combined in that the two side walls 38 are opened up from respectively different wall areas or one side wall 38 is opened up from two or more other wall areas.

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  • 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)

Claims (12)

  1. Appareil frigorifique, en particulier appareil frigorifique ménager, comprenant au moins deux cuves intérieures (1,2), des couches thermoconductrices (6, 8) métalliques disposées sur un côté extérieur des au moins deux cuves intérieures (1, 2), un tube d'étranglement (21) et un tube d'évaporateur (17) s'étendant d'une seule pièce au-dessus des couches thermoconductrices (6, 8) des deux cuves intérieures (1, 2), qui comprend des sections appartenant à des évaporateurs (36, 37) formés sur les deux cuves intérieures (1, 2) ainsi qu'une section de tube (29) reliant ces sections et qui est fixé aux couches thermoconductrices (6, 8) à l'aide d'une première couche adhésive (13) disposée entre le tube d'évaporateur (17) et les couches thermoconductrices (6, 8),
    caractérisé en ce que la couche thermoconductrice (6, 8) est une feuille, en particulier une feuille d'aluminium, et le tube d'étranglement (21) forme avec la section de tube de liaison (29) un premier échangeur de chaleur (34) interne.
  2. Appareil frigorifique selon la revendication 1, caractérisé en ce que la première couche adhésive (13) comprend des régions qui sont attenantes à la couche thermoconductrice (6, 8) et ne sont pas recouvertes par le tube d'évaporateur (17).
  3. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que la première couche adhésive (13) recouvre entièrement la couche thermoconductrice (6, 8).
  4. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que la couche thermoconductrice (6, 8) est fixée à la cuve intérieure (1, 2) par une seconde couche adhésive (12).
  5. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que la couche thermoconductrice (6, 8) est formée par une feuille autocollante (11).
  6. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que la couche thermoconductrice (8) est répartie sur plusieurs surfaces de paroi (4, 9, 10, 38) de la cuve intérieure (2).
  7. Appareil frigorifique selon la revendication 6, caractérisé en ce qu'une découpe (39) continue d'une seule pièce de la couche thermoconductrice (6, 8) enjambe au moins un bord (15) entre deux des surfaces de paroi (4, 9, 10) de la cuve intérieure (2).
  8. Appareil frigorifique selon la revendication 6 ou 7, caractérisé en ce que la couche thermoconductrice (8) est composée d'au moins deux découpes (39, 40 ; 39, 43).
  9. Appareil frigorifique selon la revendication 8, caractérisé en ce que les découpes (39, 40 ; 39, 43) se chevauchent.
  10. Appareil frigorifique selon l'une des revendications 6 à 9, caractérisé en ce que le tube d'évaporateur (17) s'étend sur les plusieurs surfaces de paroi (4, 9, 10, 38) de la cuve intérieure (2).
  11. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que la section de tube de liaison (29) est courbée.
  12. Appareil frigorifique selon l'une des revendications précédentes, caractérisé en ce que le tube d'étranglement (21) forme avec un tube d'aspiration (32) émanant du second évaporateur (36) un second échangeur de chaleur interne (35).
EP18177206.2A 2017-07-03 2018-06-12 Appareil frigorifique Active EP3425313B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017211285.9A DE102017211285A1 (de) 2017-07-03 2017-07-03 Kältegerät

Publications (2)

Publication Number Publication Date
EP3425313A1 EP3425313A1 (fr) 2019-01-09
EP3425313B1 true EP3425313B1 (fr) 2021-11-17

Family

ID=62620719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18177206.2A Active EP3425313B1 (fr) 2017-07-03 2018-06-12 Appareil frigorifique

Country Status (2)

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EP (1) EP3425313B1 (fr)
DE (1) DE102017211285A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4030118A1 (fr) * 2021-01-19 2022-07-20 Secop GmbH Unité de refroidissement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1001064C1 (nl) * 1995-06-28 1995-11-15 Fasting Corian Verwerking Koelinrichting.
IT1296073B1 (it) * 1997-11-06 1999-06-09 Whirlpool Co Metodo per ottenere un evaporatore monopezzo per circuiti frigorigeni ed evaporatore ottenuto
US6536227B1 (en) * 2002-01-29 2003-03-25 Daewoo Electronics Corporation Direct cooling type refrigerator
DE20317802U1 (de) * 2003-11-18 2005-03-31 Liebherr Hausgeraete Verdampfer für ein Kühl- und/oder Gefriergerät
DE102010028526A1 (de) * 2010-05-04 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät und Verdampfer dafür
DE102013203534A1 (de) * 2013-03-01 2014-09-04 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät und Verdampfer dafür
WO2014173761A1 (fr) * 2013-04-26 2014-10-30 BSH Bosch und Siemens Hausgeräte GmbH Dispositif de refroidissement efficace à bobine
DE102016208494A1 (de) * 2016-05-18 2017-11-23 BSH Hausgeräte GmbH Kältegerät und Verfahren zu dessen Fertigung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
DE102017211285A1 (de) 2019-01-03
EP3425313A1 (fr) 2019-01-09

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