EP2461125A2 - Appareil de réfrigération et/ou de congélation - Google Patents

Appareil de réfrigération et/ou de congélation Download PDF

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Publication number
EP2461125A2
EP2461125A2 EP20110009401 EP11009401A EP2461125A2 EP 2461125 A2 EP2461125 A2 EP 2461125A2 EP 20110009401 EP20110009401 EP 20110009401 EP 11009401 A EP11009401 A EP 11009401A EP 2461125 A2 EP2461125 A2 EP 2461125A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
cooling
refrigerant
compartment
evaporators
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.)
Granted
Application number
EP20110009401
Other languages
German (de)
English (en)
Other versions
EP2461125B1 (fr
EP2461125A3 (fr
Inventor
Thomas Dipl.-Ing. Ertel
Matthias Wiest
Holger Dipl.-Ing. Jendrusch
Didier Siegel
Michael Schick
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen 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 Liebherr Hausgeraete Ochsenhausen GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2461125A2 publication Critical patent/EP2461125A2/fr
Publication of EP2461125A3 publication Critical patent/EP2461125A3/fr
Application granted granted Critical
Publication of EP2461125B1 publication Critical patent/EP2461125B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • 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
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/068—Arrangements for circulating fluids through the insulating material
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators

Definitions

  • the present invention relates to a refrigerator and / or freezer with at least one compartment to be cooled, which serves to hold refrigerated and / or frozen goods, and with at least one refrigerant circuit, wherein the one or more refrigerant circuits comprise at least two evaporators, which in the operation of the or the refrigerant circuits are flowed through by refrigerant.
  • evaporator types are mainly used, namely free-hanging rear wall evaporator, usually made of aluminum sheet, foamed evaporator, that is, the evaporator is foam-mounted on the flat rear wall or the rear wall of the inner container, and finned evaporator, which generally in conjunction with a fan or be installed in the area of the device ceiling.
  • the present invention has the object of developing a refrigerator and / or freezer of the type mentioned in such a way that its efficiency is increased compared to known devices.
  • a refrigerator and / or freezer with the features of claim 1.
  • the at least two evaporators are arranged such that they cool one and the same compartment of the refrigerator and / or freezer during operation of the refrigerant circuit or circuits.
  • the evaporators are arranged so that the useful content of the compartment in question compared to known devices is not or only slightly reduced.
  • the at least two evaporators may be of the same type of evaporator and / or have the same mounting arrangement or be of different types of evaporators and / or have a different mounting arrangement.
  • a combination of several identical or different types of evaporator and / or mounting arrangements (free-hanging, foamed-in) thus comes into consideration. It is conceivable, for example, that one or more than one free-hanging evaporator and / or one or more than one foamed evaporator are used and / or that at least one free-hanging evaporator and at least one foamed evaporator are used, wherein the at least two evaporators for cooling the same compartment be used.
  • An exemplary embodiment of the invention comprises a refrigerator and / or freezer with one or more foamed evaporators and with one or more free-hanging evaporators or a refrigerator and / or freezer, for example, has only foamed or only free-hanging evaporator.
  • the term of the mounting arrangement is to be understood in particular that the evaporator can be freely suspended or even foamed.
  • evaporator types are, for example, tube-on-sheet, Z-Bond, roll-bond or wire-on-tube evaporator into consideration.
  • the at least two evaporators are flowed through in succession or parallel to one another in the at least one refrigerant circuit and / or that the at least two evaporators are part of the same or different refrigerant circuits.
  • the present invention further relates to a refrigerator and / or freezer with at least one compartment to be cooled, which serves to hold refrigerated and / or frozen goods, and with at least one refrigerant circuit comprising at least one evaporator for cooling said compartment, the In the operation of the refrigerant circuit is flowed through by refrigerant.
  • the compartment has at least one rear wall and a ceiling and that the evaporator is arranged so that it extends both in the region of the rear wall and in the region of the ceiling of the compartment and that at least one fan provided which is arranged so that it causes during operation of the fan, an air flow over the evaporator or over one or more portions of the evaporator.
  • said evaporator is a free-hanging evaporator.
  • the evaporator is arranged as stated so that it has a certain extent both in the region of the rear wall and in the area of the ceiling. It may have a first portion extending along the rear wall and having a second portion extending along the ceiling of the apparatus, these portions being parallel or oblique, preferably at an acute angle, to the rear wall or ceiling of the apparatus can run.
  • the at least one fan is used for dynamic cooling of the refrigerator or freezer compartment.
  • At least one cover is provided, wherein the evaporator is completely or partially behind the cover.
  • the cover has on the one hand the task of ensuring a controlled guidance of the air flow and, furthermore, the task of capturing and / or discharging the condensate dripping or draining off the evaporator as far as possible for the user.
  • the overall visual impression of the compartment is improved, since the evaporator is preferably designed and integrated in the device or is arranged in the compartment to be cooled, that no condensate can occur in visible places or is present.
  • the evaporator at least one recess is provided, in which the fan is located and / or that the evaporator has one or more recesses, which are arranged such that by the recess (s) reaching condensate preferably on the user side not visible side cover runs or drips.
  • the evaporator may be arranged or formed with regard to its mounting arrangement and / or with respect to the evaporator type according to claim 4.
  • the evaporator is made of one piece or consists of a plurality of interconnected elements that communicate with each other for example by means of a Lokringitati.
  • the present invention further relates to a refrigerator and / or freezer with at least one compartment to be cooled, which has at least one inner container for holding refrigerated and / or frozen goods, wherein the inner container is at least partially surrounded by a foaming, and at least one Refrigerant circuit comprising at least one evaporator, which is in operation Refrigerant flows through the refrigerant circuit and serves to cool the compartment.
  • the inner container has one or more channels in which the evaporator is arranged at least partially.
  • the evaporator is a tube evaporator.
  • an integration of the evaporator and the pipe guide is provided in the inner container, i. the inner container has wall regions into which the evaporator or a portion of the evaporator can be integrated or inserted.
  • the evaporator or tube evaporator can be easily installed by this integration of the pipe guide and has a large evaporator surface.
  • the uneven shape of the rear wall of the device or the inner container wall, in which the channels are located, improves the heat transfer, especially during dynamic cooling.
  • the evaporator preferably the tube evaporator is at least partially added to the foaming or adjacent to this.
  • the channel or channels are located in the rear wall and / or in the ceiling of the inner container and / or provided with one or more undercuts and / or that the channels in the width direction and / or in the depth direction and / or in vertical direction of the inner container or obliquely to the aforementioned directions.
  • a metal sheet or - band in particular an aluminum sheet or band is provided, which is for the purpose of enlarging the evaporator surface with the evaporator in combination.
  • FIG. 1 shows by reference numeral 10 an inner container which limits the compartment to be cooled at the top, bottom, in both side areas and in the rear area.
  • the front side of the compartment is closed by a door, not shown.
  • the reference numeral 20 an outer wall of the device or an outer housing of the device is shown, which is also located on the bottom, top, in the rear area and in both side areas. Between outer wall 20 and inner container 10 there is a foaming 30, for example made of PU foam, by means of which the heat transfer is inhibited in the device interior.
  • the reference numeral 40 denotes a foamed evaporator, which is located completely in the foaming 30, and by the reference numeral 50, a free-hanging evaporator.
  • the foamed-in evaporator 40 can be designed as a tube-on-plate evaporator 40 and the freely suspended evaporator 50 can be configured as a roll-bond or Z-bond evaporator.
  • the invention is not limited to the use of two evaporators 40, 50. Also, more than two foamed and / or free-hanging evaporators can be used. Like this FIG. 1 it can be seen, the evaporator 40 is in the foaming, that is, behind the inner container 20 and the free-hanging evaporator 50 in the interior, that is, in the area surrounded by the inner container 10 cooled area, which serves to hold refrigerated and / or frozen.
  • evaporator types instead of the mentioned evaporator types, other evaporators can be used, that is, the invention is not limited to the evaporator types shown.
  • evaporator 40, 50 can be flowed through in succession of refrigerant or be acted upon in parallel with refrigerant. They can be part of a common refrigerant circuit or even of two separate refrigerant circuits. This is true not only for the illustrated embodiment according to FIG. 1 but basically within the scope of the present invention.
  • the charging of the evaporators 40, 50 can be regulated by one or more solenoid valves.
  • FIG. 2 shows an embodiment which differs from the embodiment according to FIG. 1 differs in that no foamed evaporator is provided. Rather, two parallel arranged and mutually offset in the depth direction freely suspended evaporator are provided here, which are flowed through successively or in parallel by refrigerant and are part of a common or different refrigerant circuits. These can also be regulated with regard to their flow with refrigerant by solenoid valves.
  • the two evaporators can be made identical or different.
  • versions of evaporators such as tube-on-sheet, roll-bond, Z-Bond are possible.
  • these types of evaporators can also be combined.
  • the two free-hanging evaporators do not have to be arranged in parallel. An arrangement at an angle to each other is conceivable. Also, the two free-hanging evaporator must not be offset in the depth direction. Alternatively or additionally, it is conceivable to arrange the evaporators next to one another.
  • the two evaporators 50 are arranged freely suspended, that is not foamed.
  • FIG. 1 and 2 may be a combination of one or more foamed and provided by one or more free-hanging evaporators, wherein the evaporator may be of the same type or of different types. It is conceivable to use the same types of free-hanging evaporator and the same types of foamed evaporator. It is also possible to use different types of free-hanging and / or different types of foamed evaporator.
  • the one or more foamed evaporator or at least one or all foamed evaporator may be of the same type as the one or more free-hanging evaporator or at least one or all foamed evaporator, but also different evaporator types are conceivable.
  • FIG. 2 as well as in the following figures, the same reference numerals as in FIG. 1 used, provided they are the same or functionally identical parts.
  • FIG. 3 shows an embodiment of the invention with a free-hanging evaporator 50 having a first portion 51 extending vertically and, for example, parallel to the rear wall of the inner container 10 and having a horizontal portion 52 which is horizontal and parallel to the ceiling in the embodiment shown here of the inner container 10 extends.
  • the evaporator 50 can be used as a pure tube evaporator or as a plate evaporator, such as a plate evaporator. Roll-Bond or Z-Bond evaporator be executed.
  • the evaporator 50 according to FIG. 3 is thus characterized by having an area 51 located in the rear of the compartment and an upper area 52 located near the ceiling of the compartment.
  • the areas 51 and 52 need not necessarily be arranged parallel to the adjacent inner container walls. Also, an oblique arrangement or an angular arrangement such as in FIG. 5 is shown, is conceivable and mitumutzt of the invention.
  • FIG. 3 It can be seen that in the region of the evaporator 50 there is a fan which can be designed as an axial, radial, diagonal, tangential, etc. fan and bears the reference numeral 60.
  • This fan 60 is arranged so that during operation it causes an air flow over a partial area or over the entire evaporator 50. This air flow is then passed into the interior to be cooled, which is bounded by the inner container 10 and the door, not shown.
  • the reference numeral 70 denotes a cover, which is located both in the region of the horizontal portion 52 and in the region of the vertical portion 51 of the evaporator 50 is located. Like this FIG. 3 is apparent, the cover 70 extends in its vertical portion 71 parallel to the vertical portion 51 of the evaporator and with its upper portion 72 obliquely rising toward the front and at an angle to the horizontal evaporator section 52. This embodiment of the cover 70 causes the Users when opening the door and looking into the interior of the evaporator 50 does not see, but only looks at the cover 70, which can be designed according visually appealing.
  • the fan 60 is also located behind the cover 70.
  • the purpose of the cover 70 is to ensure a controlled guidance of the air flow provided by the fan 60 and to prevent the condensate dripping from the evaporator from being visible to the user.
  • the condensate is thus initially collected by the cover 70 and then derived as possible not visible at a suitable location for the user.
  • the evaporator 50 may have a recess 55, which serves for mounting the fan 60 and creates space for the installation of the fan 60.
  • the evaporator 50 may for example be designed as a pure tube evaporator, it being conceivable that the tubes of the tube evaporator are connected to increase the surface with a metal sheet, preferably made of aluminum.
  • the evaporator 50 is also conceivable to carry out the evaporator 50 as a plate evaporator, such as, for example, as a roll-bond or Z-bond evaporator.
  • the evaporator has not shown in the figures holes, apertures or the like, which allows dripping of the condensate from the top of the evaporator 50 to the cover 70.
  • Condensate formed above and extending substantially horizontally or obliquely to the horizontal evaporator section 52 can drain from the top of this section and dripping onto the cover in particular on the horizontal portion or inclined portion 72. This has the advantage that the formation of larger amounts of condensate and the resulting icing of the upper evaporator surface 52 in the area of the device ceiling is prevented.
  • the embodiment according to FIG. 5 differs from the embodiment according to FIG. 3 in that the upper portion 52 of the evaporator 50 is not made horizontally but inclined upward towards the front, as is apparent from FIG. 5 evident.
  • the cover 70 and the evaporator 50 run according to FIG. 4 and 5 in total, that is, in both sections 51, 71, 52, 72 parallel to each other.
  • a difference from the execution according to FIG. 3 is that according to FIG. 5 the fan 60 extends above the horizontal or inclined evaporator section 52, while in FIG FIG. 3 not the case.
  • the fan 60 is located between evaporator 50 and cover 70 and in particular in a corner region of the horizontal and the vertical evaporator section 51, 52.
  • the fan 60 is in the corner region of the inner container, that is in the area between the container ceiling and the inner container rear wall.
  • the fan can be located between the inner container and the evaporator or between the evaporator and the cover.
  • FIG. 6 shows a further embodiment of the present invention.
  • a foamed tube evaporator 80 is provided as the evaporator, which extends to increase the surface area in channels of the inner container 10.
  • the channels of the inner container 10 are designed to be convex from the perspective of the cooling or freezing compartment, that is to say they extend towards the cooled interior. Partially housed in these channels is the tube evaporator 80.
  • the channels are in the embodiment shown here, both on the rear wall of the inner container 10 and in the ceiling region of the inner container 10 (see reference numerals 80a and 80b).
  • the tubes of the tube evaporator 80 preferably run horizontally on the rear wall and in the area of the device ceiling in the direction of the device depth or also in the direction of the device width.
  • FIG. 6 shows an embodiment in which the tubes 80a and 80b of the tube evaporator 80 extend in device width and
  • FIG. 7 shows an embodiment in which the tubes 80c of the tube evaporator 80 run in the ceiling area in the direction of the device depth and in the region of the rear wall preferably horizontal (reference numeral 80b).
  • this may be provided with an aluminum sheet which is glued thereto. Behind the evaporator tube or in front of the evaporator tube of the tube evaporator 80, an aluminum sheet can thus be glued. Alternatively, an aluminum adhesive tape into consideration.
  • a thermal paste may be provided which is located in the channels.
  • the evaporator tubes of the tube evaporator 80 may be made of steel and may already be inserted in the manufacture of the container 10 in the drawing process, whereby the manufacturing process simplified.
  • the channels of the inner container are designed with one or more undercuts, with the result that the tube evaporator is well and reliably secured in the channel or channels.
  • the channels meander and are open to the outside in the 180 ° bends in order to compensate for tolerances of the bent tube evaporator tubes of the tube evaporator 80.
  • the occurring tolerance increases with the distance to the tube beginning of the tube evaporator 80th
  • the channel direction can run horizontally or vertically on the rear wall and in the direction of the device depth or width on the device ceiling.
  • the evaporator which can extend over the back wall and over the ceiling area, as he for example in Figure 3-7 can be seen, may be made in one piece or even consist of several parts, which communicate with each other for example by a Lokringitati.
  • the free-hanging evaporator is designed as a wire-on-tube evaporator.
  • the efficiency of a refrigerator and / or freezer is increased.
  • Evaporator technologies with a simple and therefore cost-effective design, allow for higher efficiency and lower energy consumption, and thus for better energy efficiency classes.
  • the overall visual impression of the refrigerator or freezer area improves because the evaporators are designed and integrated into the appliance so that no condensate can form in visible places.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP11009401.8A 2010-12-03 2011-11-28 Appareil de réfrigération et/ou de congélation Not-in-force EP2461125B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010053386 2010-12-03
DE102010054450A DE102010054450A1 (de) 2010-12-03 2010-12-14 Kühl- und/oder Gefriergerät

Publications (3)

Publication Number Publication Date
EP2461125A2 true EP2461125A2 (fr) 2012-06-06
EP2461125A3 EP2461125A3 (fr) 2015-10-28
EP2461125B1 EP2461125B1 (fr) 2018-09-05

Family

ID=45218174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11009401.8A Not-in-force EP2461125B1 (fr) 2010-12-03 2011-11-28 Appareil de réfrigération et/ou de congélation

Country Status (3)

Country Link
EP (1) EP2461125B1 (fr)
DE (1) DE102010054450A1 (fr)
ES (1) ES2701016T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012136620A1 (fr) * 2011-04-06 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Appareil de froid équipé de plusieurs évaporateurs

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SI24665A (sl) * 2014-03-12 2015-09-30 Gorenje Gospodinjski Aparati, D.D. Izboljšan hladilni sistem hladilnega aparata

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US2986901A (en) * 1959-03-13 1961-06-06 Whirlpool Co Refrigerant evaporator
US3590596A (en) * 1969-06-06 1971-07-06 Admiral Corp Side-by-side refrigerator-freezer construction
DE2020205A1 (de) * 1970-04-25 1971-11-11 Bauknecht Gmbh G Verfahren zur Herstellung eines Korpus eines Kuehlschrankes od.dgl.
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JPS5096963A (fr) * 1973-12-27 1975-08-01
JPS54145049A (en) * 1978-05-02 1979-11-12 Toshiba Corp Refrigerat0r
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JP4637459B2 (ja) * 2002-06-07 2011-02-23 有限会社 湘南実業 保冷庫
ITTO20030991A1 (it) * 2003-12-11 2005-06-12 Merloni Elettrodomestici Spa Apparecchio refrigerante.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012136620A1 (fr) * 2011-04-06 2012-10-11 BSH Bosch und Siemens Hausgeräte GmbH Appareil de froid équipé de plusieurs évaporateurs

Also Published As

Publication number Publication date
EP2461125B1 (fr) 2018-09-05
ES2701016T3 (es) 2019-02-20
DE102010054450A1 (de) 2012-06-06
EP2461125A3 (fr) 2015-10-28

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