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EP2691713A2 - Refrigerator - Google Patents

Refrigerator

Info

Publication number
EP2691713A2
EP2691713A2 EP12707768.3A EP12707768A EP2691713A2 EP 2691713 A2 EP2691713 A2 EP 2691713A2 EP 12707768 A EP12707768 A EP 12707768A EP 2691713 A2 EP2691713 A2 EP 2691713A2
Authority
EP
European Patent Office
Prior art keywords
throttle
side wall
refrigerating appliance
appliance according
condenser
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
EP12707768.3A
Other languages
German (de)
French (fr)
Other versions
EP2691713B1 (en
Inventor
Hans Ihle
Thomas Bischofberger
Cuma DÜLGER
Panagiotis Fotiadis
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL12707768T priority Critical patent/PL2691713T3/en
Publication of EP2691713A2 publication Critical patent/EP2691713A2/en
Application granted granted Critical
Publication of EP2691713B1 publication Critical patent/EP2691713B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/37—Capillary tubes
    • 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
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, comprising a heat-insulating housing enclosing a storage chamber for refrigerated goods and a refrigerant circuit comprising a compressor, a condenser, a throttle and an evaporator cooling the storage chamber.
  • a refrigeration appliance in particular a domestic refrigeration appliance, comprising a heat-insulating housing enclosing a storage chamber for refrigerated goods and a refrigerant circuit comprising a compressor, a condenser, a throttle and an evaporator cooling the storage chamber.
  • the extent of adiabatic cooling depends on the pressure difference passed between condenser and evaporator. The warmer the refrigerant is at the outlet of the condenser, the warmer it gets even after the relaxation in the
  • the condenser outlet as close as possible to the temperature of the environment to which the condenser gives off its heat to approach, but the smaller the temperature difference should be, the larger the required dimensions of the condenser. Cooling achievable at the condenser is also limited by parasitic heat transfer between warm, upstream regions of the condenser and cooler downstream regions. When a downstream portion of the condenser is surrounded by air already at upstream portions of the condenser
  • Condenser is heated, it can no longer cool the refrigerant below the temperature of this air.
  • a frame heater is provided to prevent condensation on the housing in the vicinity of a mounted between the body and door of the housing seal.
  • a frame heater includes a tube which is inserted in the refrigerant circuit between the compressor and condenser or downstream of the condenser to the compression heat of the refrigerant, the condensation-prone surfaces of the housing over the
  • Object of the present invention is to improve the energy efficiency of a refrigerator, in particular a household appliance.
  • the object is achieved by the throttle is arranged at least partially on a side wall of the housing in a refrigerator of the type defined above.
  • the throttle contributes little to the volume of the refrigerant circuit due to its small compared to other areas of the refrigerant circuit free cross section and therefore does not appreciably increase the amount of refrigerant required to operate the refrigerant circuit.
  • Due to the arrangement on the side wall the throttle is protected against waste heat released by the condenser, which is generally arranged at the back of the device.
  • the side wall is therefore a relatively cool region of the refrigerator housing and allows for effective additional cooling of the circulating through the throttle refrigerant.
  • the throttle is preferably protected and not visible from the outside in the side wall between an outer skin and an insulating layer thereof.
  • the outer skin of the side wall is preferably metallic.
  • the choke is preferably glued to the outer skin to ensure that it remains in heat-conducting contact with the outer skin when the insulating layer is applied during assembly of the refrigerator.
  • the insulating layer is formed in a customary manner, preferably by expanding resin foam in a bounded by the outer skin cavity of the housing.
  • a quick and easy bonding of the throttle and the outer skin is possible with the help of adhesive tape.
  • preferably only an upstream section of the throttle is arranged on the side wall.
  • a downstream portion of the throttle may be routed in a manner known per se in a suction pipe leading from the evaporator to the compressor.
  • this upstream section is the volume of the
  • the upstream section has a free diameter of less than 1 millimeter.
  • the upstream portion preferably has a length of at least 1 meter. In practice, with a normal size household refrigerator, the length of the upstream section will be up to 2 meters.
  • Insulating layer of the side wall are joined together.
  • the refrigerant circuit has a dryer whose feed line for refrigerant is fluidically connected to the upstream end of the throttle on the side wall.
  • Fig. 1 is a perspective view of an inventive
  • FIG. 2 perspective view of the refrigerator from behind;
  • FIG. 3 shows a plan view of a sheet-metal blank forming an outer skin of a side wall of the refrigeration device with a throttle section attached thereto;
  • Fig. 4 is a diagram of the refrigerant circuit of the refrigerator.
  • Figures 1 and 2 show perspective views of a household refrigeration appliance 1 in table construction.
  • a heat-insulating housing of the device is composed of a substantially cuboidal body 2 and a door 3, which together define a storage chamber 4.
  • the body 2 has a known construction with a deep-drawn plastic inner container 5, a composite of several elements together outer skin and an intermediate space between the inner container 5 and the outer skin filling insulating polyurethane foam.
  • the elements of the outer skin include two each over a side wall of the body 2
  • a machine room 8 is recessed near the bottom, which receives a refrigerant compressor 9.
  • a condenser 10 is connected to a pressure port of the compressor 9.
  • the condenser 10 is shown in FIG. 2 as a wire tube heat exchanger mounted on a rear wall of the body 2 above the engine room 8; Other constructions of the condenser 10, in particular as a compact, likewise accommodated in the machine room 8 and forcibly cooled by a fan finned heat exchanger are also considered.
  • a downstream connection of the condenser 10 is connected via a sleeve 1 1 with a
  • Throttle tube 12 is connected, which is looped on the insulating layer
  • the sleeves 11, 16 make it possible to assemble the device 1 by, before the sheet metal blanks 6 are assembled with the inner container to attach the throttle 12 to one of the sheet metal blanks 6, the body 2 together so that the ends of the throttle 12 in the engine room lie free, then froth the body and finally to insert the throttle 12 with the aid of the sleeves 11, 16 in the refrigerant circuit.
  • Fig. 3 shows a perspective view of the inside of the sheet metal blank 6 with the throttle tube 12.
  • the blank 6 comprises a flat central plate 13, which is provided to form the outer skin of a side wall of the body 2, and at which the throttle tube 12 by means of of adhesive tape strip 14 is attached. From the central plate 13
  • Angled webs 15 extend in the assembled device 1 on the front frame 7 and its back, and are there with the
  • Inner container 5 and a (not shown) rear wall plate foam-tight manner are provided.
  • Fig. 1 connects a second arranged in the engine room 8 sleeve 16, the throttle tube 12 with a second, narrower throttle tube 17, the
  • Insulating layer of the body 2 intersects to supply a arranged in close thermal contact with the storage chamber 4 evaporator 18.
  • the throttle pipe 17 is guided directly on the surface of a suction pipe 19, which leads from the evaporator 18 to the compressor 9, or within this suction pipe 19.
  • the volume of the entire refrigerant loop changes little, compared to a conventional one, despite a length of the choke tube 12 of typically 1 to 2 meters Refrigerant circuit of a refrigerator of the same size, and accordingly, the amount of circulating refrigerant needed for efficient operation changes little.
  • the throttle tube 12 extends on the central plate 13 at a distance from the web 15 connected to the inner container 5, the heat flow from the throttle tube 12 to the storage chamber 4 via the connection between the sheet metal blank 6 and the inner container 5 is negligible. Due to the spatial distance from the condenser 10, the throttle tube 12 is shielded from heat emitted by the condenser 10. Therefore, with the throttle tube 12 a greater cooling of the refrigerant can be achieved than by an enlargement of the condenser 10 to the
  • the device 1 is positioned so that the side wall containing the throttle tube 12 is exposed, so that emitted from the throttle tube 12 heat quickly to the Environment can be given further.
  • the invention is, albeit slight
  • the sheet metal blank 6 acts as a heat accumulator that receives heat from the throttle tube 12 as long as the compressor 9 is in operation and drives the circulation of refrigerant. In a subsequent standstill phase of the compressor, the heat of the sheet metal blank 6 can be distributed to the environment even in such a refrigeration device.

Landscapes

  • 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)

Abstract

In a refrigerator having a thermally insulating housing (2, 3) which surrounds a storage chamber (4) and having a refrigerant circuit which comprises a compressor (9), a condenser (10), a restrictor (12, 17) and an evaporator (18) which cools the storage chamber (4), the restrictor (12, 17) is arranged at least partially on a side wall of the housing (2).

Description

Kältegerät  The refrigerator
Die vorliegende Erfindung betrifft ein Kältegerät, insbesondere ein Haushaltskältegerät, mit einem eine Lagerkammer für Kühlgut umschließenden wärmeisolierenden Gehäuse und einem Kältemittelkreis, der einen Verdichter, einen Verflüssiger, eine Drossel und einen die Lagerkammer kühlenden Verdampfer umfasst. Die Wirkung eines solchen bekannten Kältegeräts basiert darauf, dass der Verdichter dampfförmiges Kältemittel aus dem Verdampfer absaugt, verdichtet und das durch die Verdichtung adiabatisch erwärmte Kältemittel dem Verflüssiger zuführt, wo es unter Abgabe von Wärme kondensiert. Das dabei erhaltene flüssige Kältemittel entspannt sich beim Durchgang durch die Drossel und gelangt adiabatisch abgekühlt wieder zum Verdampfer. The present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, comprising a heat-insulating housing enclosing a storage chamber for refrigerated goods and a refrigerant circuit comprising a compressor, a condenser, a throttle and an evaporator cooling the storage chamber. The effect of such a known refrigeration device based on the fact that the compressor sucks vaporized refrigerant from the evaporator, compresses and adiabatically heated by the compression refrigerant to the condenser, where it condenses with the release of heat. The resulting liquid refrigerant relaxes when passing through the throttle and adiabatically cooled returns to the evaporator.
Das Ausmaß der adiabatischen Abkühlung hängt ab von der zwischen Verflüssiger und Verdampfer durchlaufenen Druckdifferenz. Je wärmer das Kältemittel am Ausgang des Verflüssigers ist, umso wärmer gelangt es auch nach der Entspannung in den The extent of adiabatic cooling depends on the pressure difference passed between condenser and evaporator. The warmer the refrigerant is at the outlet of the condenser, the warmer it gets even after the relaxation in the
Verdampfer. Theoretisch ist es zwar möglich, die Temperatur des Kältemittels am Evaporator. Theoretically, it is possible, the temperature of the refrigerant on
Ausgang des Verflüssigers beliebig nah an die Temperatur der Umgebung, an die der Verflüssiger seine Wärme abgibt, anzunähern, doch sind die erforderlichen Abmessungen des Verflüssigers umso größer, je geringer diese Temperaturdifferenz sein soll. Die am Verflüssiger erreichbare Abkühlung ist außerdem durch parasitäre Wärmeübertragung zwischen warmen, stromaufwärtigen Bereichen des Verflüssigers und kühleren stromabwärtigen Bereichen eingeschränkt. Wenn ein stromabwärtiger Bereich des Verflüssigers von Luft umspült ist, die bereits an stromaufwärtigen Bereichen des  The condenser outlet as close as possible to the temperature of the environment to which the condenser gives off its heat to approach, but the smaller the temperature difference should be, the larger the required dimensions of the condenser. Cooling achievable at the condenser is also limited by parasitic heat transfer between warm, upstream regions of the condenser and cooler downstream regions. When a downstream portion of the condenser is surrounded by air already at upstream portions of the condenser
Verflüssigers erwärmt ist, kann er das Kältemittel nicht mehr unter die Temperatur dieser Luft abkühlen. Condenser is heated, it can no longer cool the refrigerant below the temperature of this air.
Es sind Kältegeräte bekannt, bei denen eine Rahmenheizung zur Verhinderung von Kondensation am Gehäuse in der Umgebung einer zwischen Korpus und Tür des Gehäuses angebrachten Dichtung vorgesehen ist. Eine solche Rahmenheizung umfasst ein Rohr, das in den Kältemittelkreislauf zwischen Verdichter und Verflüssiger oder stromabwärts vom Verflüssiger eingefügt ist, um mit der Kompressionswärme des Kältemittels die kondensationsgefährdeten Oberflächen des Gehäuses über den There are refrigerators are known in which a frame heater is provided to prevent condensation on the housing in the vicinity of a mounted between the body and door of the housing seal. Such a frame heater includes a tube which is inserted in the refrigerant circuit between the compressor and condenser or downstream of the condenser to the compression heat of the refrigerant, the condensation-prone surfaces of the housing over the
Taupunkt zu erwärmen. Da die Kondensationsgefährdung von der thermischen Kopplung dieser Oberflächen an die gekühlte Lagerkammer herrührt, fließt letztlich auch die von der Rahmenheizung frei gesetzte Wärme zu einem beträchtlichen Teil in die Lagerkammer und belastet so die Energieeffizienz des Kältegeräts. To warm the dew point. Since the condensation hazard of the thermal coupling If these surfaces are due to the cooled storage chamber, the heat released by the frame heating ultimately also flows to a considerable extent into the storage chamber, thereby burdening the energy efficiency of the refrigeration appliance.
Aufgabe der vorliegenden Erfindung ist, die Energieeffizienz eines Kältegeräts, insbesondere eines Haushaltsgeräts, zu verbessern. Object of the present invention is to improve the energy efficiency of a refrigerator, in particular a household appliance.
Die Aufgabe wird gelöst, indem bei einem Kältegerät vom eingangs definierten Typ die Drossel wenigstens teilweise an einer Seitenwand des Gehäuses angeordnet ist. Die Drossel trägt aufgrund ihres im Vergleich zu anderen Bereichen des Kältemittelkreislaufs kleinen freien Querschnitts wenig zum Volumen des Kältemittelkreises bei und erhöht daher nicht nennenswert die Menge des zum Betreiben des Kältemittelkreises benötigten Kältemittels. Durch die Anordnung an der Seitenwand ist die Drossel vor Abwärme, die der im Allgemeinen an der Geräterückseite angeordnete Verflüssiger frei setzt, geschützt. Die Seitenwand ist daher ein relativ kühler Bereich des Kältegerätegehäuses und ermöglicht eine wirksame zusätzliche Abkühlung des durch die Drossel zirkulierenden Kältemittels. The object is achieved by the throttle is arranged at least partially on a side wall of the housing in a refrigerator of the type defined above. The throttle contributes little to the volume of the refrigerant circuit due to its small compared to other areas of the refrigerant circuit free cross section and therefore does not appreciably increase the amount of refrigerant required to operate the refrigerant circuit. Due to the arrangement on the side wall, the throttle is protected against waste heat released by the condenser, which is generally arranged at the back of the device. The side wall is therefore a relatively cool region of the refrigerator housing and allows for effective additional cooling of the circulating through the throttle refrigerant.
Die Drossel ist vorzugsweise geschützt und von außen nicht sichtbar in der Seitenwand zwischen einer Außenhaut und einer Isolierschicht derselben angeordnet. Um die Wärme der Drossel schnell aufnehmen und weiterleiten zu können, ist die Außenhaut der Seitenwand vorzugsweise metallisch. The throttle is preferably protected and not visible from the outside in the side wall between an outer skin and an insulating layer thereof. In order to absorb and forward the heat of the throttle quickly, the outer skin of the side wall is preferably metallic.
Die Drossel ist an der Außenhaut vorzugsweise verklebt, um sicher zu stellen, dass sie in wärmeleitendem Kontakt mit der Außenhaut bleibt, wenn im Laufe des Zusammenbaus des Kältegeräts die Isolierschicht angebracht wird. Die Isolierschicht entsteht in fachüblicher Weise vorzugsweise durch Expandierenlassen von Kunstharzschaum in einem von der Außenhaut begrenzten Hohlraum des Gehäuses. The choke is preferably glued to the outer skin to ensure that it remains in heat-conducting contact with the outer skin when the insulating layer is applied during assembly of the refrigerator. The insulating layer is formed in a customary manner, preferably by expanding resin foam in a bounded by the outer skin cavity of the housing.
Eine schnelle und einfache Verklebung der Drossel und der Außenhaut ist mit Hilfe von Klebeband möglich. Um zu verhindern, dass über die Drossel Wärme in den Verdampfer eingetragen wird, ist vorzugsweise nur ein stromaufwärtiger Abschnitt der Drossel an der Seitenwand angeordnet. A quick and easy bonding of the throttle and the outer skin is possible with the help of adhesive tape. In order to prevent heat from being introduced into the evaporator via the throttle, preferably only an upstream section of the throttle is arranged on the side wall.
Ein stromabwärtiger Abschnitt der Drossel kann stattdessen in an sich bekannter Weise in einem vom Verdampfer zum Verdichter führenden Saugrohr verlegt sein. Instead, a downstream portion of the throttle may be routed in a manner known per se in a suction pipe leading from the evaporator to the compressor.
Um den Druckabfall des Kältemittels zumindest im stromaufwärtigen Abschnitt der Drossel gering zu halten, hat dieser vorzugsweise einen größeren Querschnitt als der stromabwärtige Abschnitt. Da dieser stromaufwärtige Abschnitt das Volumen des In order to keep the pressure drop of the refrigerant at least in the upstream portion of the throttle small, this preferably has a larger cross-section than the downstream portion. Since this upstream section is the volume of the
Kältemittelkreises nicht wesentlich erhöhen soll, ist bevorzugt, dass der stromaufwärtige Abschnitt einen freien Durchmesser von weniger als 1 Millimeter hat. It is preferred that the upstream section has a free diameter of less than 1 millimeter.
Um eine wirksame Kühlung des Kältemittels zwischen seinem Austritt aus dem To effectively cooling the refrigerant between its exit from the
Verflüssiger und dem Eintritt in den Verdampfer zu ermöglichen, hat der stromaufwärtige Abschnitt vorzugsweise eine Länge von wenigstens 1 Meter. In der Praxis wird bei einem normal großen Haushaltskältegerät die Länge des stromaufwärtigen Abschnitts bis zu 2 Meter betragen. Condenser and to allow the entry into the evaporator, the upstream portion preferably has a length of at least 1 meter. In practice, with a normal size household refrigerator, the length of the upstream section will be up to 2 meters.
Für den Zusammenbau des Kältegeräts ist es zweckmäßig, wenn der stromabwärtige Abschnitt und der stromaufwärtige Abschnitt des Verflüssigers außerhalb einer For the assembly of the refrigeration device, it is expedient if the downstream section and the upstream section of the condenser outside a
Isolierschicht der Seitenwand aneinander gefügt sind. Insulating layer of the side wall are joined together.
Bevorzugt weist der Kältemittelkreis einen Trockner auf, dessen Zuleitung für Kältemittel mit dem stromaufwärtigen Ende der Drossel an der Seitenwand strömungstechnisch verbunden ist. Preferably, the refrigerant circuit has a dryer whose feed line for refrigerant is fluidically connected to the upstream end of the throttle on the side wall.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren. Es zeigen: Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. Show it:
Fig. 1 eine perspektivische Ansicht eines erfindungsgemäßen Fig. 1 is a perspective view of an inventive
Haushaltskältegeräts von vorn; Fig. 2 perspektivische Ansicht des Kältegeräts von hinten; Household refrigerating appliance from the front; Fig. 2 perspective view of the refrigerator from behind;
Fig. 3 eine Draufsicht auf ein eine Außenhaut einer Seitenwand des Kältegeräts bildenden Blechzuschnitt mit einem daran befestigten Drosselabschnitt; und 3 shows a plan view of a sheet-metal blank forming an outer skin of a side wall of the refrigeration device with a throttle section attached thereto; and
Fig. 4 ein Schema des Kältemittelkreislaufs des Kältegeräts. Fig. 4 is a diagram of the refrigerant circuit of the refrigerator.
Figuren 1 und 2 zeigen perspektivische Ansichten eines Haushaltskältegeräts 1 in Tischbauweise. Ein wärmeisolierendes Gehäuse des Geräts setzt sich zusammen aus einem im Wesentlichen quaderförmigen Korpus 2 und einer Tür 3, die gemeinsam eine Lagerkammer 4 begrenzen. Der Korpus 2 hat einen an sich bekannten Aufbau mit einem aus Kunststoff tiefgezogenen Innenbehälter 5, einer aus mehreren Elementen zusammen gefügten Außenhaut und einer einen Zwischenraum zwischen dem Innenbehälter 5 und der Außenhaut ausfüllenden Isolierschicht aus Polyurethanschaum. Zu den Elementen der Außenhaut gehören zwei sich jeweils über eine Seitenwand des Korpus 2 Figures 1 and 2 show perspective views of a household refrigeration appliance 1 in table construction. A heat-insulating housing of the device is composed of a substantially cuboidal body 2 and a door 3, which together define a storage chamber 4. The body 2 has a known construction with a deep-drawn plastic inner container 5, a composite of several elements together outer skin and an intermediate space between the inner container 5 and the outer skin filling insulating polyurethane foam. The elements of the outer skin include two each over a side wall of the body 2
erstreckende Blechzuschnitte 6, die mit dem Innenbehälter 5 an einem der Tür 3 zugewandten vorderen Rahmen 7 des Korpus 2 verbunden sind. extending sheet metal blanks 6, which are connected to the inner container 5 on one of the door 3 facing the front frame 7 of the body 2.
An der Rückseite des Korpus 2 ist in Bodennähe ein Maschinenraum 8 ausgespart, der einen Kältemittel-Verdichter 9 aufnimmt. Ein Verflüssiger 10 ist an einem Druckanschluss des Verdichters 9 angeschlossen. Der Verflüssiger 10 ist in Fig. 2 als ein an einer Rückwand des Korpus 2 über dem Maschinenraum 8 montierter Drahtrohr- Wärmetauscher dargestellt; andere Bauformen des Verflüssigers 10, insbesondere als kompakter, ebenfalls im Maschinenraum 8 untergebrachter und durch einen Ventilator zwangsgekühlter Lamellen-Wärmetauscher kommen ebenfalls in Betracht. Ein stromabwärtiger Anschluss des Verflüssigers 10 ist über eine Muffe 1 1 mit einem At the back of the body 2, a machine room 8 is recessed near the bottom, which receives a refrigerant compressor 9. A condenser 10 is connected to a pressure port of the compressor 9. The condenser 10 is shown in FIG. 2 as a wire tube heat exchanger mounted on a rear wall of the body 2 above the engine room 8; Other constructions of the condenser 10, in particular as a compact, likewise accommodated in the machine room 8 and forcibly cooled by a fan finned heat exchanger are also considered. A downstream connection of the condenser 10 is connected via a sleeve 1 1 with a
Drosselrohr 12 verbunden, das sich schleifenförmig auf der der Isolierschicht Throttle tube 12 is connected, which is looped on the insulating layer
zugewandten Innenseite eines der Blechzuschnitte 6 erstreckt. Die Muffen 11 , 16 ermöglichen, das Gerät 1 zusammenzubauen, indem, bevor die Blechzuschnitte 6 mit dem Innenbehälter zusammengefügt werden, die Drossel 12 an einem der Blechzuschnitte 6 zu befestigen, den Korpus 2 so zusammenzufügen, dass die Enden der Drossel 12 im Maschinenraum 8 frei liegen, dann den Korpus auszuschäumen und schließlich die Drossel 12 mit Hilfe der Muffen 11 , 16 in den Kältemittelkreislauf einzufügen. facing inside of one of the sheet metal blanks 6 extends. The sleeves 11, 16 make it possible to assemble the device 1 by, before the sheet metal blanks 6 are assembled with the inner container to attach the throttle 12 to one of the sheet metal blanks 6, the body 2 together so that the ends of the throttle 12 in the engine room lie free, then froth the body and finally to insert the throttle 12 with the aid of the sleeves 11, 16 in the refrigerant circuit.
Fig. 3 zeigt eine perspektivische Ansicht der Innenseite des Blechzuschnitts 6 mit dem Drosselrohr 12. Der Zuschnitt 6 umfasst eine ebene zentrale Platte 13, die vorgesehen ist, um die Außenhaut einer Seitenwand des Korpus 2 zu bilden, und an der das Drosselrohr 12 mit Hilfe von Klebebandstreifen 14 befestigt ist. Von der zentralen Platte 13  Fig. 3 shows a perspective view of the inside of the sheet metal blank 6 with the throttle tube 12. The blank 6 comprises a flat central plate 13, which is provided to form the outer skin of a side wall of the body 2, and at which the throttle tube 12 by means of of adhesive tape strip 14 is attached. From the central plate 13
abgewinkelte Stege 15 erstrecken sich beim fertig montierten Gerät 1 auf dessen vorderen Rahmen 7 beziehungsweise seine Rückseite, und sind dort mit dem Angled webs 15 extend in the assembled device 1 on the front frame 7 and its back, and are there with the
Innenbehälter 5 beziehungsweise einer (nicht dargestellten) Rückwandplatte schaumdicht verbunden. Inner container 5 and a (not shown) rear wall plate foam-tight manner.
Wiederum bezogen auf Fig. 1 verbindet eine zweite im Maschinenraum 8 angeordnete Muffe 16 das Drosselrohr 12 mit einem zweiten, engeren Drosselrohr 17, das die Referring again to Fig. 1 connects a second arranged in the engine room 8 sleeve 16, the throttle tube 12 with a second, narrower throttle tube 17, the
Isolierschicht des Korpus 2 kreuzt, um einen in engem thermischen Kontakt mit der Lagerkammer 4 angeordneten Verdampfer 18 zu versorgen. Wie in Fig. 4 schematisch zu erkennen, ist das Drosselrohr 17 unmittelbar an der Oberfläche eines Saugrohrs 19, das vom Verdampfer 18 zum Verdichter 9 führt, oder innerhalb dieses Saugrohrs 19 geführt. Insulating layer of the body 2 intersects to supply a arranged in close thermal contact with the storage chamber 4 evaporator 18. As can be seen schematically in FIG. 4, the throttle pipe 17 is guided directly on the surface of a suction pipe 19, which leads from the evaporator 18 to the compressor 9, or within this suction pipe 19.
Indem für das Drosselrohr 12 ein Rohr mit geringem Innendurchmesser, typischerweise ca. 0,8 Millimeter, verwendet wird, ändert sich - trotz einer Länge des Drosselrohrs 12 von typischerweise 1 bis 2 Meter - das Volumen des gesamten Kältemittelkreislaufs nur wenig im Vergleich zu einem herkömmlichen Kältemittelkreislauf eines Kältegeräts gleicher Größe, und dementsprechend ändert sich auch die für einen effizienten Betrieb benötigte Menge an zirkulierendem Kältemittel wenig. Da das Drosselrohr 12 auf der zentralen Platte 13 beabstandet von dem mit dem Innenbehälter 5 verbundenen Steg 15 verläuft, ist der Wärmefluss vom Drosselrohr 12 zur Lagerkammer 4 über die Verbindung zwischen Blechzuschnitt 6 und Innenbehälter 5 vernachlässigbar. Durch den räumlichen Abstand vom Verflüssiger 10 ist das Drosselrohr 12 vor vom Verflüssiger 10 abgegebener Wärme abgeschirmt. Daher ist mit dem Drosselrohr 12 eine stärkere Abkühlung des Kältemittels erreichbar, als durch eine Vergrößerung des Verflüssigers 10 um das By using a small inner diameter tube, typically about 0.8 millimeter, for the choke tube 12, the volume of the entire refrigerant loop changes little, compared to a conventional one, despite a length of the choke tube 12 of typically 1 to 2 meters Refrigerant circuit of a refrigerator of the same size, and accordingly, the amount of circulating refrigerant needed for efficient operation changes little. Since the throttle tube 12 extends on the central plate 13 at a distance from the web 15 connected to the inner container 5, the heat flow from the throttle tube 12 to the storage chamber 4 via the connection between the sheet metal blank 6 and the inner container 5 is negligible. Due to the spatial distance from the condenser 10, the throttle tube 12 is shielded from heat emitted by the condenser 10. Therefore, with the throttle tube 12 a greater cooling of the refrigerant can be achieved than by an enlargement of the condenser 10 to the
Volumen des Drosselrohrs 12. Volume of the throttle tube 12.
Vorzugsweise ist das Gerät 1 so aufgestellt, dass die das Drosselrohr 12 enthaltende Seitenwand frei liegt, so dass von dem Drosselrohr 12 abgegebene Wärme schnell an die Umgebung weiter gegeben werden kann. Die Erfindung ist, wenn auch in geringemPreferably, the device 1 is positioned so that the side wall containing the throttle tube 12 is exposed, so that emitted from the throttle tube 12 heat quickly to the Environment can be given further. The invention is, albeit slight
Umfang, aber auch bei Kältegerät mit verdeckter Seitenwand wie etwa einem Einbaugerät oder einem seitlich von anderen Gegenständen flankierten Tischgerät anwendbar. Hier wirkt der Blechzuschnitt 6 als ein Wärmespeicher, der Wärme vom Drosselrohr 12 aufnimmt, solange der Verdichter 9 in Betrieb ist und die Zirkulation von Kältemittel antreibt. In einer anschließenden Stillstandsphase des Verdichters kann sich auch bei einem solchen Kältegerät die Wärme des Blechzuschnitts 6 an die Umgebung verteilen. Scope, but also in refrigeration device with hidden side wall such as a built-in device or a laterally flanked by other objects table device applicable. Here, the sheet metal blank 6 acts as a heat accumulator that receives heat from the throttle tube 12 as long as the compressor 9 is in operation and drives the circulation of refrigerant. In a subsequent standstill phase of the compressor, the heat of the sheet metal blank 6 can be distributed to the environment even in such a refrigeration device.

Claims

PATENTANSPRÜCHE
1. Kältegerät, insbesondere Haushaltskältegerät, mit einem eine Lagerkammer (4) umschließenden wärmeisolierenden Gehäuse (2, 3) und einem Kältemittelkreis, der einen Verdichter (9), einen Verflüssiger (10), eine Drossel (12, 17) und einen die Lagerkammer (4) kühlenden Verdampfer (18) umfasst, dadurch 1. Refrigerating appliance, in particular household refrigeration appliance, with a storage chamber (4) enclosing the heat-insulating housing (2, 3) and a refrigerant circuit comprising a compressor (9), a condenser (10), a throttle (12, 17) and a storage chamber (4) cooling evaporator (18), characterized
gekennzeichnet, dass die Drossel (12, 17) wenigstens teilweise an einer  characterized in that the throttle (12, 17) at least partially at one
Seitenwand des Gehäuses (2) angeordnet ist.  Side wall of the housing (2) is arranged.
2. Kältegerät nach Anspruch 1 , dadurch gekennzeichnet, dass die Drossel (12, 17) an der Seitenwand zwischen einer Außenhaut (6) und einer Isolierschicht der Seitenwand angeordnet ist. 2. Refrigerating appliance according to claim 1, characterized in that the throttle (12, 17) on the side wall between an outer skin (6) and an insulating layer of the side wall is arranged.
3. Kältegerät nach Anspruch 2, dadurch gekennzeichnet, dass die Drossel (12, 17) an der Außenhaut (6) verklebt ist, insbesondere durch Klebeband (14). 3. Refrigerating appliance according to claim 2, characterized in that the throttle (12, 17) is glued to the outer skin (6), in particular by adhesive tape (14).
4. Kältegerät nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Drossel (12, 17) einen stromaufwärtigen Abschnitt (12) und einen stromabwärtigen Abschnitt (17) umfasst und dass der an der Seitenwand angeordnete Teil der Drossel der stromaufwärtige Abschnitt (12) ist. 4. Refrigerating appliance according to one of the preceding claims, characterized in that the throttle (12, 17) comprises an upstream portion (12) and a downstream portion (17) and that arranged on the side wall of the throttle portion of the upstream portion (12) is.
5. Kältegerät nach Anspruch 4, dadurch gekennzeichnet, dass der stromabwärtige Abschnitt (17) der Drossel 12, 17) in einem vom Verdampfer (18) zum Verdichter (8) führenden Saugrohr (19) verlegt ist. 5. Refrigerating appliance according to claim 4, characterized in that the downstream portion (17) of the throttle 12, 17) in one of the evaporator (18) to the compressor (8) leading suction pipe (19) is laid.
6. Kältegerät nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der 6. Refrigerating appliance according to claim 4 or 5, characterized in that the
stromabwärtige Abschnitt (17) einen kleineren Querschnitt als der stromaufwärtige Abschnitt (12) hat.  downstream portion (17) has a smaller cross section than the upstream portion (12).
7. Kältegerät nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der stromaufwärtige Abschnitt (12) einen freien Durchmesser von weniger als 1 mm hat. Kältegerät nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass der stromaufwärtige Abschnitt (12) eine Länge von wenigstens 1 m hat. 7. Refrigerating appliance according to one of claims 4 to 6, characterized in that the upstream portion (12) has a free diameter of less than 1 mm. Refrigerating appliance according to one of claims 4 to 7, characterized in that the upstream portion (12) has a length of at least 1 m.
Kältegerät nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, dass der stromabwärtige (17) Abschnitt und der stromaufwärtige Abschnitt (12) außerhalb einer Isolierschicht der Seitenwand aneinander gefügt sind. Refrigerating appliance according to one of claims 4 to 8, characterized in that the downstream (17) portion and the upstream portion (12) outside of an insulating layer of the side wall are joined together.
EP12707768.3A 2011-03-28 2012-03-09 Refrigerator Active EP2691713B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12707768T PL2691713T3 (en) 2011-03-28 2012-03-09 Refrigerator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006260A DE102011006260A1 (en) 2011-03-28 2011-03-28 The refrigerator
PCT/EP2012/054059 WO2012130584A2 (en) 2011-03-28 2012-03-09 Refrigerator

Publications (2)

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EP2691713A2 true EP2691713A2 (en) 2014-02-05
EP2691713B1 EP2691713B1 (en) 2015-07-15

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US (1) US20140053593A1 (en)
EP (1) EP2691713B1 (en)
CN (1) CN103477169B (en)
DE (1) DE102011006260A1 (en)
ES (1) ES2544837T3 (en)
PL (1) PL2691713T3 (en)
RU (1) RU2553251C2 (en)
WO (1) WO2012130584A2 (en)

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KR102529116B1 (en) 2017-08-01 2023-05-08 엘지전자 주식회사 Vacuum adiabatic body, fabrication method for the vacuum adibatic body, and refrigerating or warming apparatus insulated by the vacuum adiabatic body
KR102427466B1 (en) 2017-08-01 2022-08-01 엘지전자 주식회사 Vehicle, refrigerater for vehicle, and controlling method for refrigerator for vehicle
KR102449175B1 (en) 2017-08-01 2022-09-29 엘지전자 주식회사 Vacuum adiabatic body and refrigerator
KR102459784B1 (en) 2017-08-01 2022-10-28 엘지전자 주식회사 Vacuum adiabatic body and refrigerator
KR102459786B1 (en) 2017-08-16 2022-10-28 엘지전자 주식회사 Vacuum adiabatic body and refrigerator
KR20210007067A (en) 2019-07-09 2021-01-20 엘지전자 주식회사 Vacuum adiabatic body, refrigerator, and fabricating method for the refrigerator
KR20210006740A (en) 2019-07-09 2021-01-19 엘지전자 주식회사 Vacuum adiabatic body and refrigerator

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Also Published As

Publication number Publication date
RU2013143743A (en) 2015-05-10
RU2553251C2 (en) 2015-06-10
WO2012130584A2 (en) 2012-10-04
CN103477169B (en) 2016-03-02
EP2691713B1 (en) 2015-07-15
PL2691713T3 (en) 2015-12-31
WO2012130584A3 (en) 2012-11-22
CN103477169A (en) 2013-12-25
DE102011006260A1 (en) 2012-10-04
US20140053593A1 (en) 2014-02-27
ES2544837T3 (en) 2015-09-04

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