EP2433062B1 - Housing for a refrigeration device, comprising a pressure compensation passage - Google Patents

Housing for a refrigeration device, comprising a pressure compensation passage Download PDF

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Publication number
EP2433062B1
EP2433062B1 EP10717127.4A EP10717127A EP2433062B1 EP 2433062 B1 EP2433062 B1 EP 2433062B1 EP 10717127 A EP10717127 A EP 10717127A EP 2433062 B1 EP2433062 B1 EP 2433062B1
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EP
European Patent Office
Prior art keywords
refrigeration device
pipe section
door
shell
passage
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EP10717127.4A
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German (de)
French (fr)
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EP2433062A1 (en
Inventor
Michael Kordon
Wolfgang Nuiding
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP2433062A1 publication Critical patent/EP2433062A1/en
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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
    • 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
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/047—Pressure equalising devices

Definitions

  • the present invention relates to a refrigerator, in particular a household refrigerator with a heat-insulating housing, which is provided with a pressure equalization passage, which connects an interior of the refrigerator with the environment. If the door of a refrigeration device has been open and then tightly closed, any hot air that has penetrated inside the device cools down. This would lead to a negative pressure in the device and make it difficult to re-open the door if not through such a pressure equalization passage outside air could flow into the device.
  • a refrigeration device with pressure equalization passage is eg off DE 10 2006 040 381 A1 known.
  • the pressure equalization passage of this known device comprises two intermeshing pipe sections, one end of which is anchored by a bayonet coupling in an outer panel or an inner panel of the door.
  • the pipe pieces each carry an apron, the foam side rests against the outer panel or the inner plate, which also engages the bayonet coupling of the pipe section to close an opening through which the pipe section extends, foam-tight.
  • the two pipe sections are deflected from one to the outer panel or the inner panel perpendicular orientation when telescoping. This may result in the skirts no longer resting tightly over their entire circumference so that foam can pass through the skirts and exit at the openings.
  • a refrigerator according to the preamble of claim 1 is made US 3696632 known.
  • Object of the present invention is to provide a housing for a refrigeration device with a pressure equalization passage, which has a higher tolerance with respect to the placement of the two intermeshing pipe sections receiving openings in an outer skin of a wall of the housing.
  • the object is achieved by extending in a refrigerator housing with a foam between a first and a second outer skin wall through which extends a pressure equalization passage with two intermeshing pipe sections, one of which first tube piece is anchored to the first outer skin of the wall and carries a foam side adjacent to the first outer skin skirt, the first piece of pipe further carries a voltage applied to the second outer skin skirt and the second piece of pipe passes through an opening of the second outer skin radially play and in the first piece of pipe intervenes.
  • the play-based engagement allows the compensation of positional deviations of the openings of the first and second outer skin in relation to each other; so long as the positional deviation does not become so great that the opening of the second outer skin is partly outside the limits defined by the abutting skirt, the foam-tightness of the construction can be ensured.
  • At least one foam passage opening may be formed in the first tube piece, which opens onto a cavity between the first and the second tube piece. In the cavity penetrating foam ensured by its bonding an adhesion of the two pipe pieces together.
  • the intermeshing pipe pieces preferably form a labyrinth seal.
  • the first tube piece may comprise at least one inner and one outer sleeve defining an annular groove open towards the second outer skin into which the second tube piece engages.
  • the second tube piece can be pushed onto the inner sleeve radially without play, so that the close contact between the tube pieces precludes the penetration of foam into the pressure equalization passage.
  • the position of the second pipe section on the second outer skin is predetermined by the position of the first pipe section.
  • the second tube piece may also be desirable to be able to freely move the second tube piece on the second outer skin within limits.
  • the second tube piece surrounds the inner sleeve radially play. Theoretically, although fluid could then penetrate from the foam passage opening along the interstices between the pipe sections to the interior of the pressure equalization passage, this can be prevented in practice, in which the passages in width and length so be sized so that penetrating foam sets in before it reaches the interior of the pressure equalization passage.
  • a connected to the second piece of pipe, on the second outer skin outboard flange serves as a stop for the positioning of the second tube piece and can hide the opening of the second outer skin, through which the second tube piece extends.
  • the second pipe section may have at least one projecting beyond the second outer skin outwardly interrupted in the circumferential direction projection. If the second outer skin is the outer panel of the door of a built-in refrigerator, such a projection can prevent close contact between the second tube piece and one of the door in a manner known per se vorgeblendeten furniture plate, which could complicate the flow of air through the pressure equalization passage.
  • the pressure equalization passageway passes through the door, it is preferably placed so as to hit the inside of the door at the edge of a body engaging projection of the door. At this point, a blockage of the pressure equalization passage is excluded by closely behind refrigerated goods or an advanced drawer inside the refrigerator, and over the pressure equalization passage incoming air can easily spread over a running in both directions of the door gap between the door and carcass.
  • the pressure equalization passage is formed in a sloping to the inside of the refrigerator door inclined surface, which preferably at least approximately opposite to the bottom of the heat-insulating housing to form an air passage gap to lead through the pressure equalization passage incoming air into the interior of the device ,
  • preferably forms a complementary to the inclined surface of the body inclined surface of the door, a second side of the gap.
  • a recess is preferably formed on the inclined surface of the inside of the door into which the pressure equalization passage opens.
  • Fig. 1 shows a vertical section through the lower edge region of a door 1 and the front portion of the bottom of a body 2 of a refrigerator or freezer.
  • a thermoformed plastic inner panel 3 and an outer panel 4 are connected at the top and bottom of the door 1 each by a molded plastic end profile 5.
  • a flexible sealing profile 6 is anchored in a circumferential groove 7 along the edge of the inner plate 3 and conceals a connection between the inner plate 3 and the end profile 5.
  • a large part of the inner plate 3 is filled by a projection 8 engaging in the body 2.
  • a pressure equalization passage 9 extends through the door 1 immediately below the projection 8.
  • the pressure equalization passage 9 is composed essentially of two pipe sections 10, 11.
  • the first pipe section 10 is anchored to an opening 12 of the inner panel 3 by a bayonet coupling.
  • the pipe section 10 at its inner end a plurality of intermittently over the circumference of a cylindrical inner sleeve 13 of the pipe section 10 extending radially projecting webs 14, and the opening 12 has a non-circular shape, through which in a first orientation the inner End can pass with the webs 14, while in a second orientation the Webs 14 and a circumferential elastic sealing skirt 15 of the pipe section 10, the edges of the opening 12 pinch.
  • a grid 16 is attached or screwed, which clamps together with a diametrically extending through the inner sleeve 13 web 17 an elastic membrane 18 of substantially elliptical shape.
  • the edges of the membrane 18 abut against the inner surface of the inner sleeve 13 and thus prevent the outflow of cold air from the refrigerator to the outside, but can give way in the event of a negative pressure inside the device and allow air to flow from the outside.
  • the first tube piece 10 further comprises an outer sleeve 19 which is concentric with the inner sleeve 13 and which, together with the inner sleeve 13, delimits an annular groove 20 which is open toward the outer panel 4.
  • the outer sleeve 19 extends into a sealing skirt 21 which, on the foam side, bears against the outer metal sheet 4, surrounding an opening 22 punched out therein.
  • the second tube piece 11 is inserted from the outside through the opening 22 in the annular groove 20, wherein in the illustration of Fig. 1 a gap 23 or 24 exists both between the second tube piece 11 and the outer sleeve 19 and between the second tube piece 11 and the inner sleeve 13 of the first tube piece 10.
  • the penetration depth of the second pipe section 11 into the annular groove 20 is limited by an integrally formed on the second pipe section 11 annular flange 25 which bears against the outside of the outer panel 4.
  • the radial clearance between the second tube piece 11 on the one hand and the sleeves 13, 19 and the opening 22 on the other hand makes it possible to position the second tube piece 11 on the outer panel 4 with a tolerance of a few millimeters in the radial direction, so that any inaccuracies in the Alignment of the openings 12, 22 of the outer panel 4 and inner panel 3 with respect to each other can be conveniently compensated.
  • a plurality of forward projections 28 are formed on a circumferential bead, which is formed on the outside of the door 1 between the second tube piece 11 and the flange 25, a plurality of forward projections 28 are formed. These projections 28 prevent, when the refrigerator is installed with a vorgeblendeten furniture plate, this furniture panel the outer panel 4 can come so close that it blocks the pressure equalization passage 9.
  • a frame heater comprises, in a manner known per se, a heating tube 33, which is flowed through by compressed refrigerant on the way to a condenser and extends adjacent to the sealing profile 6 on the front side of the body 2. Due to its placement near the lower edge of the door 1, the pressure equalization passage 9 receives heat from the heating tube 33, preventing freezing of condensed water in the pressure compensating passage 9.
  • Fig. 2 shows a perspective view of the lower part of the door 1, seen from the inside. It can be seen here that a cylindrical recess 31 is formed in an inclined surface 29, which forms a lower edge of engaging in the body 2 projection 8 of the door, at the bottom of the first pipe section 10 is anchored.
  • the recess 30 provides a continuous passage with a large free passage cross section, through which incoming air can reach the interior of the refrigerator, even if off the recess 30, the inclined surface 29 and a complementary to an inner container 31 (see Fig. 1 ) of the body 2 formed inclined surface 32 with a desired for effective isolation, very small distance.
  • Fig. 3 shows a horizontal partial section through the refrigerator housing, seen obliquely from below.
  • this partial section are in particular the parabola-like curved membrane 18 inside the pressure equalization passage 9 and further foam passage openings 26 on the outer sleeve 19 can be seen.

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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)
  • Refrigerator Housings (AREA)

Description

Die vorliegende Erfindung betrifft ein Kältegerät, insbesondere ein Haushaltskältegerät mit einem wärmeisolierenden Gehäuse, das mit einem Druckausgleichsdurchgang versehen ist, der einen Innenraum des Kältegeräts mit der Umgebung verbindet. Wenn die Tür eines Kältegeräts offen gewesen ist und anschließend dicht geschlossen wird, kühlt sich eingedrungene Warmluft im Inneren des Gerätes ab. Dies würde zu einem Unterdruck im Gerät führen und ein erneutes Öffnen der Tür erheblich erschweren, wenn nicht durch einen solchen Druckausgleichsdurchgang Außenluft in das Gerät nachströmen könnte.The present invention relates to a refrigerator, in particular a household refrigerator with a heat-insulating housing, which is provided with a pressure equalization passage, which connects an interior of the refrigerator with the environment. If the door of a refrigeration device has been open and then tightly closed, any hot air that has penetrated inside the device cools down. This would lead to a negative pressure in the device and make it difficult to re-open the door if not through such a pressure equalization passage outside air could flow into the device.

Ein Kältegerät mit Druckausgleichsdurchgang ist z.B. aus DE 10 2006 040 381 A1 bekannt. Der Druckausgleichsdurchgang dieses bekannten Geräts umfasst zwei ineinander greifende Rohrstücke, von denen jeweils ein Ende durch eine Bajonettkupplung in einem Außenblech bzw. einer Innenplatte der Tür verankert ist. Die Rohrstücke tragen jeweils eine Schürze, die schaumseitig an dem Außenblech bzw. der Innenplatte anliegt, an der auch die Bajonettkupplung des Rohrstücks angreift, um eine Öffnung, durch die sich das Rohrstück erstreckt, schaumdicht zu verschließen.A refrigeration device with pressure equalization passage is eg off DE 10 2006 040 381 A1 known. The pressure equalization passage of this known device comprises two intermeshing pipe sections, one end of which is anchored by a bayonet coupling in an outer panel or an inner panel of the door. The pipe pieces each carry an apron, the foam side rests against the outer panel or the inner plate, which also engages the bayonet coupling of the pipe section to close an opening through which the pipe section extends, foam-tight.

Wenn die Öffnungen des Außenblechs und der Innenplatte, an denen die beiden Rohrstücke verankert sind, nicht exakt fluchten, dann werden beim Ineinanderschieben die beiden Rohrstücke aus einer zum Außenblech bzw. der Innenplätte senkrechten Orientierung ausgelenkt. Dies kann dazu führen, dass die Schürzen nicht mehr auf ihrem gesamten Umfang dicht anliegen, so dass Schaum die Schürzen passieren und an den Öffnungen austreten kann.If the openings of the outer panel and the inner plate, where the two pipe sections are anchored, are not exactly aligned, then the two pipe sections are deflected from one to the outer panel or the inner panel perpendicular orientation when telescoping. This may result in the skirts no longer resting tightly over their entire circumference so that foam can pass through the skirts and exit at the openings.

Ein Kältegerät gemäß dem Oberbegriff von Anspruch 1 ist aus US 3696632 bekannt.A refrigerator according to the preamble of claim 1 is made US 3696632 known.

Aufgabe der vorliegenden Erfindung ist, ein Gehäuse für ein Kältegerät mit einem Druckausgleichsdurchgang anzugeben, das eine höhere Toleranz hinsichtlich der Platzierung von die zwei ineinandergreifenden Rohrstücke aufnehmenden Öffnungen in einer Außenhaut einer Wand des Gehäuses aufweist.Object of the present invention is to provide a housing for a refrigeration device with a pressure equalization passage, which has a higher tolerance with respect to the placement of the two intermeshing pipe sections receiving openings in an outer skin of a wall of the housing.

Die Aufgabe wird gelöst, indem bei einem Kältegerätegehäuse mit einer zwischen einer ersten und einer zweiten Außenhaut ausgeschäumten Wand, durch die sich ein Druckausgleichsdurchgang mit zwei ineinandergreifenden Rohrstücken erstreckt, von denen ein erstes Rohrstück an der ersten Außenhaut der Wand verankert ist und eine schaumseitig an der ersten Außenhaut anliegende Schürze trägt, das erste Rohrstück ferner eine an der zweiten Außenhaut anliegende Schürze trägt und das zweite Rohrstück eine Öffnung der zweiten Außenhaut radial spielhaltig durchsetzt und in das erste Rohrstück eingreift. Der spielhaltige Eingriff ermöglicht die Kompensation von Positionsabweichungen der Öffnungen von erster und zweiter Außenhaut im Bezug zueinander; so lange die Positionsabweichung nicht so groß wird, dass die Öffnung der zweiten Außenhaut teilweise außerhalb der durch die anliegende Schürze festgelegten Grenzen liegt, kann die Schaumdichtigkeit des Aufbaus sichergestellt werden.The object is achieved by extending in a refrigerator housing with a foam between a first and a second outer skin wall through which extends a pressure equalization passage with two intermeshing pipe sections, one of which first tube piece is anchored to the first outer skin of the wall and carries a foam side adjacent to the first outer skin skirt, the first piece of pipe further carries a voltage applied to the second outer skin skirt and the second piece of pipe passes through an opening of the second outer skin radially play and in the first piece of pipe intervenes. The play-based engagement allows the compensation of positional deviations of the openings of the first and second outer skin in relation to each other; so long as the positional deviation does not become so great that the opening of the second outer skin is partly outside the limits defined by the abutting skirt, the foam-tightness of the construction can be ensured.

Um eine Fixierung des zweiten Rohrstücks zu erreichen, kann in dem ersten Rohrstück wenigstens eine Schaumdurchgangsöffnung gebildet sein, die auf einen Hohlraum zwischen dem ersten und dem zweiten Rohrstück mündet. In den Hohlraum eindringender Schaum gewährleistet durch sein Abbinden eine Verklebung der beiden Rohrstücke aneinander.In order to achieve a fixation of the second tube piece, at least one foam passage opening may be formed in the first tube piece, which opens onto a cavity between the first and the second tube piece. In the cavity penetrating foam ensured by its bonding an adhesion of the two pipe pieces together.

Um ein Vordringen des Schaums in den Druckausgleichsdurchgang zu verhindern, bilden die ineinandergreifenden Rohrstücke vorzugsweise eine Labyrinthdichtung. Insbesondere kann das erste Rohrstück wenigstens eine innere und eine äußere Hülse umfassen, die eine zu der zweiten Außenhaut hin offene Ringnut begrenzen, in die das zweite Rohrstück eingreift.In order to prevent penetration of the foam into the pressure equalization passage, the intermeshing pipe pieces preferably form a labyrinth seal. In particular, the first tube piece may comprise at least one inner and one outer sleeve defining an annular groove open towards the second outer skin into which the second tube piece engages.

Das zweite Rohrstück kann radial spielfrei auf die innere Hülse aufgeschoben sein, so dass der enge Kontakt zwischen den Rohrstücken das Vordringen von Schaum in den Druckausgleichsdurchgang ausschließt. In diesem Fall ist die Position des zweiten Rohrstücks an der zweiten Außenhaut durch die Lage des ersten Rohrstücks vorgegeben.The second tube piece can be pushed onto the inner sleeve radially without play, so that the close contact between the tube pieces precludes the penetration of foam into the pressure equalization passage. In this case, the position of the second pipe section on the second outer skin is predetermined by the position of the first pipe section.

Es kann aber auch wünschenswert sein, das zweite Rohrstück an der zweiten Außenhaut in Grenzen frei verschieben zu können. Hierfür ist es zweckmäßig, dass das zweite Rohrstück die innere Hülse radial spielhaltig umgibt. Theoretisch könnte dann zwar ein Fluid von der Schaumdurchgangsöffnung aus entlang der Zwischenräume zwischen den Rohrstücken bis ins Innere des Druckausgleichsdurchgangs vordringen, doch kann dies in der Praxis unterbunden werden, in dem die Durchgänge in Breite und Länge so bemessen werden, dass eindringender Schaum darin abbindet, bevor er das Innere des Druckausgleichsdurchgangs erreicht.However, it may also be desirable to be able to freely move the second tube piece on the second outer skin within limits. For this purpose, it is expedient that the second tube piece surrounds the inner sleeve radially play. Theoretically, although fluid could then penetrate from the foam passage opening along the interstices between the pipe sections to the interior of the pressure equalization passage, this can be prevented in practice, in which the passages in width and length so be sized so that penetrating foam sets in before it reaches the interior of the pressure equalization passage.

Ein mit dem zweiten Rohrstück verbundener, an der zweiten Außenhaut außen anliegender Flansch dient als Anschlag für die Positionierung des zweiten Rohrstücks und kann die Öffnung der zweiten Außenhaut, durch die sich das zweite Rohrstück erstreckt, verbergen.A connected to the second piece of pipe, on the second outer skin outboard flange serves as a stop for the positioning of the second tube piece and can hide the opening of the second outer skin, through which the second tube piece extends.

Das zweite Rohrstück kann wenigstens einen über die zweite Außenhaut nach außen überstehenden, in Umfangsrichtung unterbrochenen Vorsprung aufweisen. Wenn die zweite Außenhaut das Außenblech der Tür eines Einbau-Kältegerätes ist, kann ein solcher Vorsprung einen engen Kontakt zwischen dem zweiten Rohrstück und einer der Tür in an sich bekannter Weise vorgeblendeten Möbelplatte verhindern, der das Nachströmen von Luft durch den Druckausgleichsdurchgang erschweren könnte.The second pipe section may have at least one projecting beyond the second outer skin outwardly interrupted in the circumferential direction projection. If the second outer skin is the outer panel of the door of a built-in refrigerator, such a projection can prevent close contact between the second tube piece and one of the door in a manner known per se vorgeblendeten furniture plate, which could complicate the flow of air through the pressure equalization passage.

Wenn der Druckausgleichsdurchgang durch die Tür verläuft, ist er vorzugsweise so platziert, dass er am Rand eines in den Korpus eingreifenden Vorsprungs der Tür auf die Türinnenseite trifft. An dieser Stelle ist eine Blockade des Druckausgleichsdurchgangs durch eng davorstehendes Kühlgut oder eine vorgezogene Schublade im Inneren des Kältegerätes ausgeschlossen, und über den Druckausgleichsdurchgang zuströmende Luft kann sich über einen in beiden Richtungen der Tür verlaufenden Spalt zwischen Tür und Korpus leicht verteilen.When the pressure equalization passageway passes through the door, it is preferably placed so as to hit the inside of the door at the edge of a body engaging projection of the door. At this point, a blockage of the pressure equalization passage is excluded by closely behind refrigerated goods or an advanced drawer inside the refrigerator, and over the pressure equalization passage incoming air can easily spread over a running in both directions of the door gap between the door and carcass.

Nach einem eigenständigen Gedanken der Erfindung ist der Druckausgleichsdurchgang in einer zur Innenseite der Kältegerätetür hin abschüssigen Schrägfläche gebildet, die vorzugsweise zumindest annähernd dem Boden des wärmeisolierenden Gehäuses gegenüberliegt, um einen Luftdurchtrittsspalt zu bilden, um durch den Druckausgleichsdurchgang zuströmende Luft in den Innenraum des Gerätes zu führen.According to an independent idea of the invention, the pressure equalization passage is formed in a sloping to the inside of the refrigerator door inclined surface, which preferably at least approximately opposite to the bottom of the heat-insulating housing to form an air passage gap to lead through the pressure equalization passage incoming air into the interior of the device ,

Um die Isolation des Gerätes nicht unnötig zu schwächen, bildet vorzugsweise eine zu der Schrägfläche des Korpus komplementäre Schrägfläche der Tür eine zweite Seite des Spalts.In order not to weaken the insulation of the device unnecessarily, preferably forms a complementary to the inclined surface of the body inclined surface of the door, a second side of the gap.

Um an der Türinnenseite eine zur Türaußenseite parallele Montagefläche für die Rohrstücke zur Verfügung zu haben, ist an der Schrägfläche der Türinnenseite vorzugsweise eine Vertiefung gebildet, in die der Druckausgleichsdurchgang einmündet.In order to have on the inside of the door a parallel to the outside of the door mounting surface for the pipe sections available, a recess is preferably formed on the inclined surface of the inside of the door into which the pressure equalization passage opens.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren. Es zeigen:

Fig. 1
einen Teilschnitt durch Tür und Korpus eines erfindungsgemäßen Kältegerätegehäuses entlang einer vertikalen, in Tiefenrichtung des Gehäuses verlaufenden Schnittebene;
Fig. 2
eine Teilansicht der Innenseite der Tür des Kältegerätes und
Fig. 3
einen partiellen Schnitt des Kältegerätekorpus entlang einer horizontalen Schnittebene.
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
a partial section through the door and body of a refrigeration device housing according to the invention along a vertical, extending in the depth direction of the housing sectional plane;
Fig. 2
a partial view of the inside of the door of the refrigerator and
Fig. 3
a partial section of the refrigerator body along a horizontal sectional plane.

Fig. 1 zeigt einen vertikalen Schnitt durch den unteren Randbereich einer Tür 1 und den vorderen Bereich des Bodens eines Korpus 2 eines Kühl- oder Gefrierschranks. Eine aus Kunststoff tiefgezogene Innenplatte 3 und ein Außenblech 4 sind am oberen und unteren Rand der Tür 1 jeweils durch ein aus Kunststoff spritzgeformtes Abschlussprofil 5 verbunden. Ein flexibles Dichtprofil 6 ist in einer entlang des Randes der Innenplatte 3 umlaufenden Nut 7 verankert und verdeckt eine Verbindung zwischen Innenplatte 3 und Abschlussprofil 5. Ein großer Teil der Innenplatte 3 ist von einem in den Korpus 2 eingreifenden Vorsprung 8 ausgefüllt. Ein Druckausgleichsdurchgang 9 erstreckt sich durch die Tür 1 unmittelbar unterhalb des Vorsprungs 8. Fig. 1 shows a vertical section through the lower edge region of a door 1 and the front portion of the bottom of a body 2 of a refrigerator or freezer. A thermoformed plastic inner panel 3 and an outer panel 4 are connected at the top and bottom of the door 1 each by a molded plastic end profile 5. A flexible sealing profile 6 is anchored in a circumferential groove 7 along the edge of the inner plate 3 and conceals a connection between the inner plate 3 and the end profile 5. A large part of the inner plate 3 is filled by a projection 8 engaging in the body 2. A pressure equalization passage 9 extends through the door 1 immediately below the projection 8.

Der Druckausgleichsdurchgang 9 ist im Wesentlichen aus zwei Rohrstücken 10, 11 zusammengesetzt. Das erste Rohrstück 10 ist an einer Öffnung 12 der Innenplatte 3 durch eine Bajonettkupplung verankert. Zu diesem Zweck weist das Rohrstück 10 an seinem inneren Ende mehrere sich mit Unterbrechungen über den Umfang einer zylindrischen inneren Hülse 13 des Rohrstücks 10 erstreckende radial vorspringende Stege 14 auf, und die Öffnung 12 hat eine unrunde Form, durch die in einer ersten Orientierung das innere Ende mit den Stegen 14 hindurch treten kann, während in einer zweiten Orientierung die Stege 14 und eine umlaufende elastische Dichtschürze 15 des Rohrstücks 10 die Ränder der Öffnung 12 einklemmen.The pressure equalization passage 9 is composed essentially of two pipe sections 10, 11. The first pipe section 10 is anchored to an opening 12 of the inner panel 3 by a bayonet coupling. For this purpose, the pipe section 10 at its inner end a plurality of intermittently over the circumference of a cylindrical inner sleeve 13 of the pipe section 10 extending radially projecting webs 14, and the opening 12 has a non-circular shape, through which in a first orientation the inner End can pass with the webs 14, while in a second orientation the Webs 14 and a circumferential elastic sealing skirt 15 of the pipe section 10, the edges of the opening 12 pinch.

Auf ein äußeres Ende der inneren Hülse 13 ist ein Gitter 16 aufgesteckt oder aufgeschraubt, das zusammen mit einem diametral durch die innere Hülse 13 verlaufenden Steg 17 eine elastische Membran 18 von im Wesentlichen elliptischer Form einklemmt. Die Ränder der Membran 18 liegen an der Innenfläche der inneren Hülse 13 an und verhindern so den Abfluss von Kaltluft aus dem Kältegerät nach Außen, können aber im Falle eines Unterdrucks im Inneren des Gerätes nachgeben und Luft von Außen zuströmen lassen.On an outer end of the inner sleeve 13, a grid 16 is attached or screwed, which clamps together with a diametrically extending through the inner sleeve 13 web 17 an elastic membrane 18 of substantially elliptical shape. The edges of the membrane 18 abut against the inner surface of the inner sleeve 13 and thus prevent the outflow of cold air from the refrigerator to the outside, but can give way in the event of a negative pressure inside the device and allow air to flow from the outside.

Das erste Rohrstück 10 umfasst ferner eine zu der inneren Hülse 13 konzentrische äußere Hülse 19, die zusammen mit der inneren Hülse 13 eine zum Außenblech 4 hin offene Ringnut 20 begrenzt. Die äußere Hülse 19 läuft aus in eine Dichtschürze 21, die schaumseitig an dem Außenblech 4, eine darin ausgestanzte Öffnung 22 umgebend, anliegt.The first tube piece 10 further comprises an outer sleeve 19 which is concentric with the inner sleeve 13 and which, together with the inner sleeve 13, delimits an annular groove 20 which is open toward the outer panel 4. The outer sleeve 19 extends into a sealing skirt 21 which, on the foam side, bears against the outer metal sheet 4, surrounding an opening 22 punched out therein.

Das zweite Rohrstück 11 ist von Außen durch die Öffnung 22 in die Ringnut 20 eingeschoben, wobei in der Darstellung der Fig. 1 ein Zwischenraum 23 bzw. 24 sowohl zwischen dem zweiten Rohrstück 11 und der äußeren Hülse 19 als auch zwischen dem zweiten Rohrstück 11 und der inneren Hülse 13 des ersten Rohrstücks 10 besteht. Die Eindringtiefe des zweiten Rohrstücks 11 in die Ringnut 20 ist begrenzt durch einen an das zweite Rohrstück 11 angeformten ringförmigen Flansch 25, der an der Außenseite des Außenblechs 4 anliegt.The second tube piece 11 is inserted from the outside through the opening 22 in the annular groove 20, wherein in the illustration of Fig. 1 a gap 23 or 24 exists both between the second tube piece 11 and the outer sleeve 19 and between the second tube piece 11 and the inner sleeve 13 of the first tube piece 10. The penetration depth of the second pipe section 11 into the annular groove 20 is limited by an integrally formed on the second pipe section 11 annular flange 25 which bears against the outside of the outer panel 4.

In der in Fig. 1 gezeigten Konfiguration ist keinerlei Befestigung des zweiten Rohrstücks 11 an dem Außenblech 4 oder dem inneren Rohrstück 10 zu sehen; das Rohrstück 11 erscheint lose. In der Praxis wird eine Fixierung des zweiten Rohrstücks 11 erreicht, wenn beim Ausschäumen der Tür 1 - in Fig. 1 nicht dargestellter - Isolierschaum durch Durchgänge 26 der äußeren Hülse 19 in den Zwischenraum 23 zwischen dieser und dem zweiten Rohrstück 11 gelangt. Die Zwischenräume 23, 24 zwischen den ineinander greifenden Rohrstücken 10, 11 bilden eine Labyrinthdichtung, deren freier Durchgangsquerschnitt und deren Länge so aufeinander abgestimmt sind, dass in der Zeit, die der Schaum benötigen würde, um beide Zwischenräume 23, 24 auszufüllen, dieser bereits abgebunden ist. So kann trotz des Fehlens einer hermetischen Dichtung der Druckausgleichsdurchgang 9 zuverlässig von Schaum freigehalten werden. Das radiale Spiel zwischen dem zweiten Rohrstück 11 einerseits und den Hülsen 13, 19 und der Öffnung 22 andererseits ermöglicht es jedoch, das zweite Rohrstück 11 am Außenblech 4 mit einer Toleranz von ein paar Millimetern in radialer Richtung zu positionieren, so dass eventuelle Ungenauigkeiten in der Ausrichtung der Öffnungen 12, 22 von Außenblech 4 und Innenplatte 3 in Bezug aufeinander bequem ausgeglichen werden können.In the in Fig. 1 shown configuration, no attachment of the second pipe section 11 on the outer panel 4 or the inner pipe section 10 can be seen; the pipe section 11 appears loose. In practice, a fixation of the second pipe section 11 is achieved when when foaming the door 1 - in Fig. 1 Not shown - insulating foam passes through passages 26 of the outer sleeve 19 in the intermediate space 23 between this and the second pipe section 11. The interstices 23, 24 between the intermeshing pipe sections 10, 11 form a labyrinth seal whose free passage cross-section and their length are coordinated so that in the time that the foam would need to fill both spaces 23, 24, this already is tied. Thus, despite the absence of a hermetic seal the pressure equalization passage 9 can be reliably kept free of foam. However, the radial clearance between the second tube piece 11 on the one hand and the sleeves 13, 19 and the opening 22 on the other hand makes it possible to position the second tube piece 11 on the outer panel 4 with a tolerance of a few millimeters in the radial direction, so that any inaccuracies in the Alignment of the openings 12, 22 of the outer panel 4 and inner panel 3 with respect to each other can be conveniently compensated.

An einem umlaufenden Wulst, der an der Außenseite der Tür 1 zwischen dem zweiten Rohrstück 11 und dem Flansch 25 ausgeformt ist, sind mehrere nach vorn gerichtete Vorsprünge 28 gebildet. Diese Vorsprünge 28 verhindern, dass, wenn das Kältegerät mit einer vorgeblendeten Möbelplatte eingebaut ist, diese Möbelplatte dem Außenblech 4 so nahe kommen kann, dass sie den Druckausgleichsdurchgang 9 versperrt.On a circumferential bead, which is formed on the outside of the door 1 between the second tube piece 11 and the flange 25, a plurality of forward projections 28 are formed. These projections 28 prevent, when the refrigerator is installed with a vorgeblendeten furniture plate, this furniture panel the outer panel 4 can come so close that it blocks the pressure equalization passage 9.

Eine Rahmenheizung umfasst in an sich bekannter Weise ein Heizrohr 33, das von verdichtetem Kältemittel auf dem Weg zu einem Verflüssiger durchströmt wird und sich an der Vorderseite des Korpus 2 benachbart zum Dichtprofil 6 erstreckt. Aufgrund ihrer Platzierung nahe am unteren Rand der Tür 1 empfängt der Druckausgleichsdurchgang 9 Wärme von dem Heizrohr 33, was ein Gefrieren von Kondenswasser in dem Druckausgleichsdurchgang 9 verhindert.A frame heater comprises, in a manner known per se, a heating tube 33, which is flowed through by compressed refrigerant on the way to a condenser and extends adjacent to the sealing profile 6 on the front side of the body 2. Due to its placement near the lower edge of the door 1, the pressure equalization passage 9 receives heat from the heating tube 33, preventing freezing of condensed water in the pressure compensating passage 9.

Fig. 2 zeigt eine perspektivische Ansicht des unteren Teils der Tür 1, gesehen von der Innenseite her. Man erkennt hier, das in einer Schrägfläche 29, die einen unteren Rand des in den Korpus 2 eingreifenden Vorsprungs 8 der Tür bildet, eine zylindrische Vertiefung 31 gebildet ist, an deren Boden das erste Rohrstück 10 verankert ist. Die Vertiefung 30 schafft einen kontinuierlichen Durchgang mit großem freiem Durchgangsquerschnitt, über den zuströmende Luft den Innenraum des Kältegeräts erreichen kann, selbst wenn sich abseits der Vertiefung 30 die Schrägfläche 29 und eine dazu komplementär an einem Innenbehälter 31 (siehe Fig. 1) des Korpus 2 gebildete Schrägfläche 32 mit einem für eine wirksame Isolation sich erwünschten, sehr geringen Abstand gegenüberliegen. Fig. 2 shows a perspective view of the lower part of the door 1, seen from the inside. It can be seen here that a cylindrical recess 31 is formed in an inclined surface 29, which forms a lower edge of engaging in the body 2 projection 8 of the door, at the bottom of the first pipe section 10 is anchored. The recess 30 provides a continuous passage with a large free passage cross section, through which incoming air can reach the interior of the refrigerator, even if off the recess 30, the inclined surface 29 and a complementary to an inner container 31 (see Fig. 1 ) of the body 2 formed inclined surface 32 with a desired for effective isolation, very small distance.

Fig. 3 zeigt einen horizontalen Teilschnitt durch das Kältegerätegehäuse, gesehen schräg von unten. In diesem Teilschnitt sind insbesondere die parabelähnlich gekrümmte Membran 18 im Inneren des Druckausgleichsdurchgangs 9 und weitere Schaumdurchtrittsöffnungen 26 an der äußeren Hülse 19 zu erkennen. Fig. 3 shows a horizontal partial section through the refrigerator housing, seen obliquely from below. In this partial section are in particular the parabola-like curved membrane 18 inside the pressure equalization passage 9 and further foam passage openings 26 on the outer sleeve 19 can be seen.

Claims (13)

  1. Refrigeration device, particularly a domestic refrigeration device having a heat-insulating housing, which is provided with a foam-filled wall (1) between a first and a second shell (3, 4) through which there extends a pressure compensation passage (9) comprising two interlocking pipe sections (10, 11), of which a first pipe section (10) is anchored on the first shell (3) of the wall (1) and carries an apron (15) bearing against the first shell (3) on the foam side, and wherein the first pipe section (10) also carries an apron (21) bearing against the second shell (4), characterised in that the second pipe section (11) penetrates an opening (12) of the second shell (4) while maintaining radial play and engages in the first pipe section (10).
  2. Refrigeration device according to claim 1, characterised in that at least one foam passage opening (26) which opens into a hollow space (23) between the first and the second pipe sections (10, 11) is formed in the first pipe section (10).
  3. Refrigeration device according to claim 2, characterised in that the interlocking pipe sections (10, 11) form a labyrinth seal.
  4. Refrigeration device according to claim 2 or 3, characterised in that the first pipe section (10) comprises at least one inner and one outer sleeve (13, 19) which delimit an annular groove (20) which is open toward the second shell (4) and in which the second pipe section (11) engages.
  5. Refrigeration device according to claim 4, characterised in that the second pipe section (11) is pushed, free of radial play, onto the inner sleeve.
  6. Refrigeration device according to claim 4, characterised in that the second pipe section (11) surrounds the inner sleeve (13) while maintaining radial play.
  7. Refrigeration device according to one of the preceding claims, characterised in that the second pipe section (11) is connected to a flange (25) which bears externally against the second shell (4).
  8. Refrigeration device according to claim 7, characterised in that the flange (25) covers an opening (12) of the second shell (4) through which the second pipe section (11) extends while maintaining play.
  9. Refrigeration device according to one of the preceding claims, characterised in that the second pipe section (11) has at least one protrusion (28) which is interrupted in the peripheral direction and projects outwardly beyond the second shell (4).
  10. Refrigeration device according to one of the preceding claims, characterised in that it comprises a carcass (2) and a door (1) hinged on the carcass (2), said door having a protrusion (8) projecting into the carcass (2), and in that the pressure compensation passage (9) extends through the door (1) and meets the interior side of the door at an edge (29) of the protrusion (8).
  11. Refrigeration device according to claim 10, characterised in that an inclined surface (32) disposed opposite the pressure compensation passage (9) and sloping toward the door (1) is formed at a base of the carcass (1).
  12. Refrigeration device according to claim 11, characterised in that the inclined surface (32) of the carcass (1) is disposed opposite a complementary inclined surface (29) of the door (1).
  13. Refrigeration device according to claim 12, characterised in that the pressure compensation passage (9) opens into a depression (30) of the inclined surface (29).
EP10717127.4A 2009-05-20 2010-04-29 Housing for a refrigeration device, comprising a pressure compensation passage Not-in-force EP2433062B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910003261 DE102009003261A1 (en) 2009-05-20 2009-05-20 Refrigeration unit housing with pressure compensation passage
PCT/EP2010/055775 WO2010133433A1 (en) 2009-05-20 2010-04-29 Housing for a refrigeration device, comprising a pressure compensation passage

Publications (2)

Publication Number Publication Date
EP2433062A1 EP2433062A1 (en) 2012-03-28
EP2433062B1 true EP2433062B1 (en) 2015-03-04

Family

ID=42986186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10717127.4A Not-in-force EP2433062B1 (en) 2009-05-20 2010-04-29 Housing for a refrigeration device, comprising a pressure compensation passage

Country Status (3)

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EP (1) EP2433062B1 (en)
DE (1) DE102009003261A1 (en)
WO (1) WO2010133433A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015211652A1 (en) 2015-06-24 2016-12-29 BSH Hausgeräte GmbH Refrigeration appliance apparatus and method for producing a refrigeration appliance device
DE102015222924A1 (en) 2015-11-20 2017-05-24 BSH Hausgeräte GmbH Household refrigeration appliance device and method with a household refrigeration appliance device
US11732950B2 (en) 2021-04-26 2023-08-22 Electrolux Home Products, Inc. Pressure relief jumper drain for an appliance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3696632A (en) * 1971-03-08 1972-10-10 Gen Motors Corp Defrost water drain trap
ITMI20040115A1 (en) * 2004-01-28 2004-04-28 Whirlpool Co COMPENSATING VALVE FOR FREEZERS
DE102006040381A1 (en) 2006-08-29 2008-03-06 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with pressure compensation valve

Also Published As

Publication number Publication date
EP2433062A1 (en) 2012-03-28
WO2010133433A1 (en) 2010-11-25
DE102009003261A1 (en) 2010-11-25

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