EP3365623A1 - Domestic refrigerator comprising a refrigerator compartment, a freezer compartment, and a pressure compensation valve - Google Patents

Domestic refrigerator comprising a refrigerator compartment, a freezer compartment, and a pressure compensation valve

Info

Publication number
EP3365623A1
EP3365623A1 EP16774476.2A EP16774476A EP3365623A1 EP 3365623 A1 EP3365623 A1 EP 3365623A1 EP 16774476 A EP16774476 A EP 16774476A EP 3365623 A1 EP3365623 A1 EP 3365623A1
Authority
EP
European Patent Office
Prior art keywords
freezer compartment
door
air
groove
widening
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
EP16774476.2A
Other languages
German (de)
French (fr)
Other versions
EP3365623B1 (en
Inventor
Markus Mayer
Özlem Dede
Fatih Arslan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL16774476T priority Critical patent/PL3365623T3/en
Publication of EP3365623A1 publication Critical patent/EP3365623A1/en
Application granted granted Critical
Publication of EP3365623B1 publication Critical patent/EP3365623B1/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
    • 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
    • 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
    • F25D23/08—Parts formed wholly or mainly of plastics materials
    • F25D23/082—Strips
    • F25D23/087—Sealing strips
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply

Definitions

  • the invention relates to a household refrigerator with a housing in which a freezer compartment is formed.
  • the household refrigerator comprises a pressure compensation valve, which is designed for pressure equalization in the freezer compartment.
  • a domestic freezer in which a pressure equalization in the region of a seal of the door and a groove in which the seal is arranged on the door, a permanently open column is formed. This allows air to flow under the seal and thus between the seal and the groove from outside the refrigerator into the interior.
  • the problem arises that can permanently flow through the permanently open column and warmer air, resulting in a higher energy consumption of the household freezer.
  • a higher energy consumption is required to be able to maintain the low temperature level in the freezer compartment also by the permanently flowing in warmer air from the outside.
  • a refrigeration device which has a freezer compartment as a single interior.
  • This refrigeration device includes a pressure compensation valve.
  • This pressure compensating valve is a specific separate component disposed between a door outside and a door inner wall of a sleeve. In this sleeve, a membrane is biased and held by an intermediate wall. In the event of a negative pressure in the interior, air flows between the edges of the membrane and the sleeve.
  • the local arrangement also includes a passage in the region of a seal of the door.
  • the passage is open in two directions, so that targeted air can escape from the environment into the interior, but also air from the interior into the environment. This also affects the energy-efficient operation of the refrigerator.
  • a freezer with a pressure compensation device is known.
  • the pressure compensation device is formed in the region between a seal of the door and a groove in which the seal extends.
  • the groove expansions of the groove are formed so that it can move in the extending part of the seal and then depending on the movement in turn air can be passed to the environment inward. Again, then the negative pressure in the only existing freezer in the freezer compartment can be compensated.
  • the problem may arise that due to the large temperature differences between the temperatures in the freezer compartment and the incoming air then condensation can occur and consequently a freezing of this pressure compensation device can occur.
  • the functionality is at least inhibited or completely disabled.
  • An inventive household refrigerator comprises a housing in which a freezer compartment is formed.
  • the freezer compartment forms an area in which food, in particular food, in a first temperature range in the household refrigerator are storable.
  • the household refrigerator comprises a pressure compensation valve, which is designed for pressure equalization in the freezer compartment.
  • An essential idea of the invention is the fact that a cooling space is formed in the housing in addition to the freezer compartment.
  • the refrigerated space represents an area in the household refrigerating appliance in which foodstuffs can be stored in a temperature range different from the freezer space, this temperature range comprising higher temperature values, such as this first temperature range of the freezer space.
  • the temperature range of the cold room is between +4 ° C and +10 ° C.
  • the first temperature range in the freezer compartment includes temperature values preferably less than -10 ° C.
  • the cooling space can be closed by a door arranged on the housing. At the door, the pressure compensation valve is formed.
  • the refrigerator is connected in an air-conducting manner to the freezer compartment for equalizing the pressure in the freezer compartment in the condition closed by the door. According to the invention, it is thus provided that, in principle, a household refrigerating appliance is to be considered, which not only has a space for storing and preserving food, but also two separate rooms with different temperature zones, namely with a freezer compartment and a cold room.
  • the pressure compensation valve with which a pressure equalization is achieved at least in the freezer compartment, in particular in the freezer compartment and the refrigerator compartment, is located far away from the freezer compartment and formed in the cold compartment, namely in the door which closes the cold storage compartment. Due to the air-conducting connection between the cooling chamber and the freezer compartment, it is still possible that the negative pressure in the freezer compartment can be compensated via the pressure compensation valve on the door for closing the cold room. By this configuration, it is also achieved that the pressure compensation valve can no longer freeze or freeze. It is therefore permanently reliable. In addition, this configuration also ensures that both rooms, namely the freezer compartment and the refrigerator compartment, can be reliably and permanently reliably compensated for with regard to possible negative pressure that occurs. Also, the opening of the door can then be done with reduced force.
  • the freezer compartment is closable by a door which is formed separately from the door, which is designed to close the refrigerator compartment. It can be provided that these two doors each form front ends of the household refrigerating appliance and thus on the visible side and not covering these doors in a laminating manner are. However, it can also be provided that the freezer compartment is closed by a door and this freezer compartment and the door are arranged in the volume of the cold room, so that the door of the freezer compartment is again covered by the door of the cold room. In order to then reach the freezer, the door of the refrigerator, which then also represents the front-side external door of the household refrigerator, is to be opened.
  • the pressure compensation valve is a one-way valve. This therefore means that the pressure compensation valve allows air flow in only one direction, namely from the environment of the domestic refrigerator in the interior. Preferably, this is then done in the refrigerator and from the refrigerator in the freezer compartment.
  • a very energy-efficient operation of the household refrigerator is also possible, since it is prevented that a leakage of cool air from the freezer compartment or refrigerator via the pressure equalization valve from the household refrigerator out.
  • the air-conducting connection is formed by an air duct system, which is designed for air exchange between the freezer compartment and the refrigerator compartment.
  • an air duct system which is designed for air exchange between the freezer compartment and the refrigerator compartment.
  • the air-conducting connection is formed at least in sections along a seal arranged on the at least one door.
  • a seal is arranged on the door, which extends into a groove in an inner side of the door.
  • the pressure compensating valve is formed by a widening region of the groove and a sealing region extending in the widening region, wherein the sealing region is movable in the cross-cutting direction of the widening region in the widening region. This means that in the direction of rotation around the groove, it has a larger groove cross-section at a specific point, namely in the broadening region, than outside this broadening region.
  • the seal with its sealing region, with which it is arranged in the groove and held therein is preferably not widened at this point of the broadening region, this sealing region in the broadening area, unlike outside the broadening area, not accurately pressed into it.
  • the arrangement or mounting of the sealing area in this widening area is such that air can flow in and out permanently into the widening area and the sealing area is positioned in such a way that the pressure compensation valve is permanently open and pressure-independent in both flow directions at this point.
  • this widening region of the groove is designed as a trough-shaped groove section which, viewed in the direction of the extent of the groove, is tapered at opposite ends of the widening region.
  • a boot-shaped groove section favors the functionality of the pressure compensation valve, in particular the one-way valve.
  • the sealing region has sealing wings on opposite sides. It can be provided that the sealing region, which extends into the widening region, is designed as a hollow region, so that the weight can be reduced.
  • a seal is arranged on the door, which extends into a groove in an inner side of the door.
  • the pressure compensation valve comprises a widening region of the groove and a sealing region extending into the widening region.
  • the sealing region is arranged in the cross-sectional direction of the broadening region in the broadening region flow-permeable. This means that this sealing region in this widening region is not sealed thereto, in particular spaced apart and thus arranged contactlessly to the inside of this widening region. As a result, the passage of air can take place at this point.
  • the pressure compensation valve further comprises outside the groove a sealing lip, which rests in the sealing state of the pressure compensating valve at an upper end of a protruding from the groove and extending a groove leg of the groove leg.
  • a sealing lip which rests in the sealing state of the pressure compensating valve at an upper end of a protruding from the groove and extending a groove leg of the groove leg.
  • a sealing region which, for example, is not desired to move in the groove due to, for example, environmental influences or other conditions, and which in the prior art represents a pressure compensation device in this respect, is thus avoided here.
  • Complex movements of the sealing area, which extends into the groove, are therefore no longer necessary in the present embodiment, since the local geometry and position of the sealing area is anyway designed such that a permanent gap for the flow between the sealing area and the inside as Broadening of the groove in both directions (viewed in the plane perpendicular to the extension direction of the groove) is formed.
  • the sealing lip can also be designed very filigree by the above advantageous embodiment, so that it is highly flexible and the mobility is favored with respect to the opening and closing.
  • the sealing lip formed on a base element of the seal outside the groove on a base element of the seal shoots the flow path through the widening region outside the widening region when an air pressure in the freezer compartment is less than a negative pressure threshold value.
  • This embodiment is designed to release the flow path for the inflow of air from the environment of the household refrigerating appliance into the refrigerator compartment and from there into the freezer compartment when the air pressure in the freezer compartment is less than the negative pressure threshold value.
  • the sealing lip can therefore be easily raised by their high flexibility and filigree and thus also very thin design by the negative pressure that occurs, so that an undesirable negative pressure can also be reacted immediately and the pressure compensation valve can be opened in this one direction.
  • the household refrigerator is a no-frost domestic refrigeration appliance.
  • a no-frost domestic refrigeration appliance is equipped with a no-frost technology.
  • a no-frost technique a technical process is referred to, in which the humidity is reduced in a designed as a freezer compartment interior.
  • the food does not frost or significantly reduced and a defrosting of the freezer compartment can be omitted or only needs to be carried out in significantly reduced time cycles.
  • cooling elements designed as cooling fins, and thus a heat exchanger of a secondary refrigeration cycle lie in a separated area in the interior space.
  • the cold air is then introduced from this separated area in the interior and thus the freezer compartment by a fan.
  • These devices are designed so that air circulates through all compartments of the interior and enters the cycle again in the separated area. Since cold air holds less moisture, it precipitates as frost primarily only at the heat exchanger of the secondary refrigeration cycle which is in the separated area and is the coldest point in the no-frost home appliance having contact with air. It can then be provided that at specific time intervals Defrosting mode is performed, in which this first heat exchanger is defrosted in the separated area.
  • a heating device is provided in the no-frost domestic refrigeration appliance, by means of which a heating of this heat exchanger is carried out.
  • the resulting then from the thawing ice layer water can run out of the interior and thus also from the device via a gutter and can be collected in a collecting bowl, which can also serve as an evaporation tank.
  • the fan is deactivated in the defrost mode, so that the freezer compartment remains cooled. Thanks to the no-frost technology, the freezing of cooling fins is significantly reduced and the humidity in the entire domestic refrigeration unit drops, which also significantly reduces the formation of ice layers.
  • top, bottom, front, “rear”, “depth direction”, “width direction”, “height direction”, etc. are the intended use and intended arrangement of the device and at a then standing in front of the device and given in the direction of the device viewing observer given positions and orientations.
  • Fig. 1 is a simplified perspective view of an embodiment of a household refrigerator
  • FIG. 2 shows a view of an inside of a door of the household refrigerating appliance according to FIG. 1;
  • FIG. Fig. 3 is a sectional view through the door of FIG. 2;
  • 4 shows a view of a partial region of the door according to FIG. 2;
  • FIG. 5 is a view of the partial section of Figure 4 with partially lifted sealing lip of a seal ..;
  • Fig. 6 is a view of the partial section of FIG. 4 and 5 with removed from a widening range sealing region of the seal.
  • a household refrigeration appliance 1 is shown in a simplified representation, which is a combined refrigerated-freezer and which is designed for receiving food.
  • the household refrigerating appliance 1 comprises a body or a housing 2.
  • a freezing space 3 on the one hand and a cooling space 4 on the other hand are arranged.
  • foods can be stored in a temperature range that is different with respect to a storage of food to a temperature range in the freezer compartment 3.
  • the cooling space 4 is separated from the freezer space 3, and the freezer space 3 and the cooling space 4 are limited in each case by individual walls.
  • the freezer compartment 3 can be closed by a door 5, which is arranged pivotably on the housing 2.
  • the refrigerator 4 closed by its own separate door 6, which is also pivotally mounted on the housing 2.
  • the doors 5 and 6 are arranged as front components of the household refrigerating appliance 1 and they cover the respective rooms, namely the freezer compartment 3 and the refrigerator compartment 4 respectively only via the respective front sides. In particular, thus does not cover the door 6 and the freezer compartment 3 with from.
  • the doors 5 and 6 are arranged in the closed state in a common plane, and positioned without overlap in the xy plane, where x is the width direction and y describes the height direction of the household refrigerator 1.
  • the household refrigerator 1 is designed as a no-frost household refrigeration appliance.
  • the cooling chamber 4 For air exchange of the freezer compartment 3 is formed with the cooling chamber 4 by a not shown and required for this type of equipment air duct system.
  • the domestic refrigeration appliance 1 also includes a pressure compensation device, which is designed to compensate for a negative pressure, in particular at least in the freezer compartment 3.
  • the door 6 is shown with a view of an inner side 7 in the context.
  • the inside 7 faces the refrigerator 4 in the closed state of the door 6.
  • door racks 8, 9 and 10 are also shown, which are arranged on this inner side 7.
  • the door 6 also includes on its inner side 7 a circumferential seal 1 first This is in the closed state of the door 6 on a flange 12 (Fig. 1).
  • a pressure compensating valve 13a as indicated in simplified form in FIG. 2 by its local position and shown as one of, for example, two pressure compensating valves 13a and 13b, is shown in more detail in the sectional view in FIG.
  • the sectional view is shown in the context in the x-z plane, and thus perpendicular to an extension direction of the groove 14, wherein z denotes the depth direction of the household refrigerator 1.
  • a groove 14 is formed on the inside 7.
  • the groove 14 has at the point where the pressure compensating valve 13a is formed, a Widening area 15.
  • the widening region 15 therefore has a greater width than a groove width which is measured perpendicular to the direction of rotation of the groove and is to be considered in the x direction in FIG. 3, than outside the point at which the pressure compensation valve 13b is designed.
  • the tub width is thus considered in a plane perpendicular to an extension direction of the groove 14.
  • the seal 1 1 comprises a base element 16, which is arranged outside the groove 14 and also outside the widening region 15.
  • This Dichtungsbreich 17 is outside of the widening range 15 on the inner sides of the groove 14 and is quasi held therein.
  • this sealing region 17 is arranged at a distance from the walls or the inside of the widening region 15, so that a permanently existing gap 18 is formed, into which air 19 can flow.
  • a groove leg 20 is also extended outside the groove 14 and in particular outside the widening region 15 by an extending leg 21.
  • This leg 21 comprises a widening region 15 facing away from the upper end 22.
  • a sealing lip 23 of the seal 1 1 at this upper end 22 is a sealing lip 23 of the seal 1 1 at.
  • the sealing lip 23 is a thin lamella or a wing, which is arranged projecting from the base element 16.
  • This sealing lip 23 as part of the pressure compensation valve 13a is disposed outside the widening region 15 and opened or closed with respect to their naturalläse.
  • the pressure compensation valve 13a is a one-way valve, which means that only in one direction, namely from outside the domestic refrigerator 1, air in the refrigerator 4 and thus also in the freezer compartment 3 in air can flow.
  • the sealing lip 23 is also oriented as shown in FIG. 3 so that it is inclined by the base member 16 obliquely toward this upper end 22 and this upper end 22 also covers overlapping from above.
  • the sealing lip 23 is automatically closed and a flow of air from the environment into the domestic refrigerator 1 is prevented as well as an outflow of the freezer compartment 3 or the refrigerator 4 from the household refrigerator 1 out. 4, the door 6 is shown in the region of the pressure compensation valve 13b. It can be seen that the sealing lip 23, seen from the inside 7, covers this upper end 22 on the visible side and therefore also covers the gap between the base element 16 and the leg 21, whereby the widening area 15 is also covered. In the representation according to FIG. 5, the sealing lip 23 is shown pushed away for better understanding, so that it is possible to look at the widening area 15 and the upper end 22 of the leg 21. In addition, the base element 16 can then be seen, as it then extends into the widening area 15 with the sealing area 17.
  • this widening region 15 in a plan view is like a boat or bootsformig. This means that viewed in the extension direction of the groove 14, this widening region 15 is designed to be tapered at its opposite ends 15a and 15b. LIST OF REFERENCE NUMBERS

Abstract

The invention relates to a domestic refrigerator (1) comprising a housing (2) in which a freezer compartment (3) is embodied, and a pressure compensation valve (13a, 13b) which is designed to compensate a vacuum in the freezer compartment (3), a refrigerator compartment (4) being embodied in the housing (2), which can be closed by a door (6) arranged on the housing (2), and the at least one pressure compensation valve (13a, 13b) being embodied on the door (6), the refrigerator compartment (4) being connected to the freezer compartment (3) in an air-conducting manner, for the compensation of the vacuum in the freezer compartment (3) by the pressure compensation valve (13a, 13b).

Description

HAUSHALTSKÄLTEGERÄT MIT EINEM KÜHLRAUM, EINEM GEFRIERRAUM UND EINEM  BUDGET COOLER WITH A REFRIGERATOR, FREEZER AND ONE
DRUCKAUSGLEICHSVENTIL  PRESSURE RELIEF VALVE
Die Erfindung betrifft ein Haushaltskältegerät mit einem Gehäuse, in dem ein Gefrierraum ausgebildet ist. Das Haushaltskältegerät umfasst ein Druckausgleichsventil, welches zum Druckausgleich im Gefrierraum ausgebildet ist. The invention relates to a household refrigerator with a housing in which a freezer compartment is formed. The household refrigerator comprises a pressure compensation valve, which is designed for pressure equalization in the freezer compartment.
Beim Öffnen einer Tür des Haushaltskältegeräts dringt warme Luft in den Innenraum und somit in den Lagerraum für die Lebensmittel ein. Beim nachfolgenden Schließen dieser Tür entsteht ein Unterdruck in diesem Innenraum. Durch diesen Unterdruck wird somit auch die Tür stärker zugezogen. Dadurch entstehen andererseits größere Kräfte, die für einen Nutzer erforderlich sind, um diese Tür dann wieder öffnen zu können. When you open a door of the household refrigerator warm air penetrates into the interior and thus in the storage room for the food. The subsequent closing of this door creates a negative pressure in this interior. Due to this negative pressure, the door is therefore pulled harder. On the other hand, this results in larger forces that are required for a user to re-open this door.
Aus der DE 10 2008 054 417 A1 ist ein Haushaltsgefrierschrank bekannt, bei welchem ein Druckausgleich im Bereich einer Dichtung der Tür und einer Nut, in der die Dichtung an der Tür angeordnet ist, eine dauerhaft offene Spalte ausgebildet ist. Dadurch kann Luft unter der Dichtung und somit zwischen der Dichtung und der Nut von außerhalb des Kältegeräts in den Innenraum strömen. Bei einer derartigen Ausführung tritt jedoch die Problematik auf, dass durch die dauerhaft offene Spalte permanent auch wärmere Luft einströmen kann, was zu einem höheren Energieverbrauch des Haushaltsgefrierschranks führt. Insbesondere ist ein höherer Energieverbrauch erforderlich, um das niedrige Temperaturniveau in dem Gefrierraum auch durch die dauerhaft einströmende wärmere Luft von außen aufrecht erhalten zu können. From DE 10 2008 054 417 A1 a domestic freezer is known in which a pressure equalization in the region of a seal of the door and a groove in which the seal is arranged on the door, a permanently open column is formed. This allows air to flow under the seal and thus between the seal and the groove from outside the refrigerator into the interior. In such an embodiment, however, the problem arises that can permanently flow through the permanently open column and warmer air, resulting in a higher energy consumption of the household freezer. In particular, a higher energy consumption is required to be able to maintain the low temperature level in the freezer compartment also by the permanently flowing in warmer air from the outside.
Darüber hinaus ist aus der DE 20 2006 013 229 U1 ein Kältegerät bekannt, welches als einen einzigen Innenraum einen Gefrierraum aufweist. Dieses Kältegerät umfasst ein Druckausgleichsventil. Dieses Druckausgleichsventil ist eine spezifische separate Komponente, die zwischen einer Türaußenseite und einer Türinnenwand einer Hülse angeordnet ist. In dieser Hülse ist eine Membran vorgespannt und durch eine Zwischenwand gehalten. Im Falle eines Unterdrucks in dem Innenraum strömt Luft zwischen den Rändern der Membran und der Hülse hindurch. Zusätzlich zu diesem spezifischen Druckausgleichsventil umfasst die dortige Anordnung auch noch einen Durchgang im Bereich einer Dichtung der Tür. Damit ist ein Luftaustausch zwischen der Umgebung des Kältegeräts und dem Innenraum unter Umgehung des Druckausgleichsventils möglich, wobei auch hier der vielfach seine Richtung wechselnde Verlauf dieses Durchgangs in Art einer Labyrinthdichtung einen freien Luftaustausch zwischen dem Innenraum und der Umgebung verhindert. Auch bei dieser Ausgestaltung ist der Durchgang in zwei Richtungen zu öffnen, sodass gezielt Luft von der Umgebung in den Innenraum, jedoch auch Luft von dem Innenraum in die Umgebung entweichen kann. Auch dadurch wird der energieeffiziente Betrieb des Kältegeräts beeinträchtigt. In addition, from DE 20 2006 013 229 U1 a refrigeration device is known, which has a freezer compartment as a single interior. This refrigeration device includes a pressure compensation valve. This pressure compensating valve is a specific separate component disposed between a door outside and a door inner wall of a sleeve. In this sleeve, a membrane is biased and held by an intermediate wall. In the event of a negative pressure in the interior, air flows between the edges of the membrane and the sleeve. In addition to this specific pressure compensation valve, the local arrangement also includes a passage in the region of a seal of the door. This is an air exchange between the Environment of the refrigerator and the interior, bypassing the pressure compensation valve possible, in which case the often changing its direction course of this passage in the manner of a labyrinth seal prevents free air exchange between the interior and the environment. Also in this embodiment, the passage is open in two directions, so that targeted air can escape from the environment into the interior, but also air from the interior into the environment. This also affects the energy-efficient operation of the refrigerator.
Des Weiteren ist aus der DE 30 00 202 A1 eine Kühltruhe mit einer Druckausgleichseinrichtung bekannt. Bei dieser Ausführung ist die Druckausgleichseinrichtung im Bereich zwischen einer Dichtung der Tür und einer Nut, in der sich die Dichtung hinein erstreckt, ausgebildet. Dazu sind an spezifischen, beabstandet voneinander angeordneten Stellen der Nut Aufweitungen der Nut ausgebildet, sodass sich darin der hinein erstreckende Teil der Dichtung bewegen kann und abhängig von der Bewegung dann wiederum Luft an der Umgebung nach innen geleitet werden kann. Auch hier kann dann somit der Unterdruck in dem einzig in der Gefriertruhe vorhandenen Gefrierraum ausgeglichen werden. Furthermore, from DE 30 00 202 A1 a freezer with a pressure compensation device is known. In this embodiment, the pressure compensation device is formed in the region between a seal of the door and a groove in which the seal extends. For this purpose, at specific spaced-apart locations of the groove expansions of the groove are formed so that it can move in the extending part of the seal and then depending on the movement in turn air can be passed to the environment inward. Again, then the negative pressure in the only existing freezer in the freezer compartment can be compensated.
Bei den bekannten Ausführungen im Gefrierraum kann jedoch das Problem auftreten, dass aufgrund der großen Temperaturunterschiede zwischen den Temperaturen im Gefrierraum und der einströmenden Luft dann eine Kondensation auftreten kann und folglich ein Zufrieren dieser Druckausgleichseinrichtung auftreten kann. Dadurch ist die Funktionalität zumindest gehemmt oder ganz außer Kraft gesetzt. In the known embodiments in the freezer, however, the problem may arise that due to the large temperature differences between the temperatures in the freezer compartment and the incoming air then condensation can occur and consequently a freezing of this pressure compensation device can occur. As a result, the functionality is at least inhibited or completely disabled.
Es ist Aufgabe der vorliegenden Erfindung, ein Haushaltskältegerät zu schaffen, bei welchem ein in einem Gefrierraum auftretender Unterdruck schnell abgebaut werden kann und die Funktionalität der Druckausgleichsstelle hoch ist. It is an object of the present invention to provide a household refrigerator, in which a negative pressure occurring in a freezer compartment can be rapidly reduced and the functionality of the pressure equalization point is high.
Diese Aufgabe wird durch ein Haushaltskältegerät, welches die Merkmale nach Anspruch 1 aufweist, gelöst. This object is achieved by a household refrigerator, which has the features of claim 1.
Ein erfindungsgemäßes Haushaltskältegerät umfasst ein Gehäuse, in dem ein Gefrierraum ausgebildet ist. Der Gefrierraum bildet einen Bereich, in dem Lebensmittel, insbesondere Speisen, in einem ersten Temperaturbereich in dem Haushaltskältegerät lagerbar sind. Das Haushaltskältegerät umfasst ein Druckausgleichsventil, welches zum Druckausgleich im Gefrierraum ausgebildet ist. Ein wesentlicher Gedanke der Erfindung ist darin zu sehen, dass in dem Gehäuse zusätzlich zum Gefrierraum ein Kühlraum ausgebildet ist. Der Kühlraum stellt einen Bereich in dem Haushaltskältegerät dar, in dem Lebensmittel in einem zum Gefrierraum unterschiedlichen Temperaturbereich lagerbar sind, wobei dieser Temperaturbereich höhere Temperaturwerte umfasst, wie dieser erste Temperaturbereich des Gefrierraums. Insbesondere beträgt der Temperaturbereich des Kühlraums zwischen +4 °C und +10 °C. Der erste Temperaturbereich im Gefrierraum umfasst Temperaturwerte vorzugsweise kleiner -10 °C. Der Kühlraum ist durch eine an dem Gehäuse angeordnete Tür verschließbar. An der Tür ist das Druckausgleichsventil ausgebildet. Der Kühlraum ist mit dem Gefrierraum zum Druckausgleich im Gefrierraum im durch die Tür verschlossenen Zustand luftleitend verbunden. Gemäß der Erfindung ist somit vorgesehen, dass grundsätzlich ein Haushaltskältegerät zu betrachten ist, welches nicht nur einen Raum zum Lagern und Konservieren von Lebensmitteln aufweist, sondern zwei diesbezüglich separate Räume mit unterschiedlichen Temperaturzonen, nämlich mit einem Gefrierraum und einem Kühlraum. Das Druckausgleichsventil, mit dem ein Druckausgleich zumindest im Gefrierraum, insbesondere in dem Gefrierraum und dem Kühlraum, erzielt wird, ist fern dem Gefrierraum angeordnet und im Kühlraum ausgebildet, nämlich in der Tür, die den Kühlraum verschließt. Durch die luftleitende Verbindung zwischen dem Kühlraum und dem Gefrierraum wird es dennoch ermöglicht, dass über das Druckausgleichsventil an der Tür zum Verschließen des Kühlraums der Unterdruck im Gefrierraum ausgleichbar ist. Durch diese Ausgestaltung wird es auch erreicht, dass das Druckausgleichsventil nicht mehr vereisen oder zufrieren kann. Es ist daher dauerhaft funktionssicher. Darüber hinaus wird durch diese Ausgestaltung auch erreicht, dass beide Räume, nämlich der Gefrierraum und der Kühlraum, im Hinblick auf möglichen auftretenden Unterdruck zuverlässig und dauerhaft sicher ausgeglichen werden können. Auch kann somit dann das Öffnen der Tür kraftreduziert erfolgen. Insbesondere ist der Gefrierraum durch eine Tür verschließbar, die separat zur Tür ausgebildet ist, die zum Verschließen des Kühlraums ausgebildet ist. Es kann vorgesehen sein, dass diese beiden Türen jeweils frontseitige Abschlüsse des Haushaltskältegeräts bilden und somit sichtseitig und sich nicht flächig überdeckend diese Türen positioniert sind. Es kann jedoch auch vorgesehen sein, dass der Gefrierraum mit einer Tür verschlossen ist und dieser Gefrierraum und die Tür in dem Volumen des Kühlraums angeordnet sind, sodass durch die Tür des Kühlraums auch dann nochmals die Tür des Gefrierraums frontseitig abgedeckt ist. Um dann zum Gefrierraum gelangen zu können, ist zunächst die Tür des Kühlraums, die dann auch die frontseitige außenliegende Tür des Haushaltskältegeräts darstellt, zu öffnen. An inventive household refrigerator comprises a housing in which a freezer compartment is formed. The freezer compartment forms an area in which food, in particular food, in a first temperature range in the household refrigerator are storable. The household refrigerator comprises a pressure compensation valve, which is designed for pressure equalization in the freezer compartment. An essential idea of the invention is the fact that a cooling space is formed in the housing in addition to the freezer compartment. The refrigerated space represents an area in the household refrigerating appliance in which foodstuffs can be stored in a temperature range different from the freezer space, this temperature range comprising higher temperature values, such as this first temperature range of the freezer space. In particular, the temperature range of the cold room is between +4 ° C and +10 ° C. The first temperature range in the freezer compartment includes temperature values preferably less than -10 ° C. The cooling space can be closed by a door arranged on the housing. At the door, the pressure compensation valve is formed. The refrigerator is connected in an air-conducting manner to the freezer compartment for equalizing the pressure in the freezer compartment in the condition closed by the door. According to the invention, it is thus provided that, in principle, a household refrigerating appliance is to be considered, which not only has a space for storing and preserving food, but also two separate rooms with different temperature zones, namely with a freezer compartment and a cold room. The pressure compensation valve, with which a pressure equalization is achieved at least in the freezer compartment, in particular in the freezer compartment and the refrigerator compartment, is located far away from the freezer compartment and formed in the cold compartment, namely in the door which closes the cold storage compartment. Due to the air-conducting connection between the cooling chamber and the freezer compartment, it is still possible that the negative pressure in the freezer compartment can be compensated via the pressure compensation valve on the door for closing the cold room. By this configuration, it is also achieved that the pressure compensation valve can no longer freeze or freeze. It is therefore permanently reliable. In addition, this configuration also ensures that both rooms, namely the freezer compartment and the refrigerator compartment, can be reliably and permanently reliably compensated for with regard to possible negative pressure that occurs. Also, the opening of the door can then be done with reduced force. In particular, the freezer compartment is closable by a door which is formed separately from the door, which is designed to close the refrigerator compartment. It can be provided that these two doors each form front ends of the household refrigerating appliance and thus on the visible side and not covering these doors in a laminating manner are. However, it can also be provided that the freezer compartment is closed by a door and this freezer compartment and the door are arranged in the volume of the cold room, so that the door of the freezer compartment is again covered by the door of the cold room. In order to then reach the freezer, the door of the refrigerator, which then also represents the front-side external door of the household refrigerator, is to be opened.
In einer vorteilhaften Ausführung ist vorgesehen, dass das Druckausgleichsventil ein Einwegeventil ist. Dies bedeutet somit, dass das Druckausgleichsventil nur in eine Richtung eine Luftströmung ermöglicht, nämlich von der Umgebung des Haushaltskältegeräts in das Innere. Vorzugsweise erfolgt dies dann in den Kühlraum und von dem Kühlraum in den Gefrierraum. Durch eine derartige besonders vorteilhafte Ausführung ist auch ein sehr energieeffizienter Betrieb des Haushaltskältegeräts ermöglicht, da es verhindert ist, dass ein Austritt von kühler Luft aus dem Gefrierraum beziehungsweise Kühlraum über das Druckausgleichsventil aus dem Haushaltskältegerät heraus erfolgt. In an advantageous embodiment, it is provided that the pressure compensation valve is a one-way valve. This therefore means that the pressure compensation valve allows air flow in only one direction, namely from the environment of the domestic refrigerator in the interior. Preferably, this is then done in the refrigerator and from the refrigerator in the freezer compartment. By such a particularly advantageous embodiment, a very energy-efficient operation of the household refrigerator is also possible, since it is prevented that a leakage of cool air from the freezer compartment or refrigerator via the pressure equalization valve from the household refrigerator out.
Vorzugsweise ist vorgesehen, dass die luftleitende Verbindung durch ein Luftkanalsystem ausgebildet ist, welches zum Luftaustausch zwischen dem Gefrierraum und dem Kühlraum ausgebildet ist. Ein derartiges, bereits bestehendes Luftkanalsystem kann somit multifunktionell genutzt werden, sodass es neben der von der grundsätzlichen Technologie des Haushaltskältegeräts vorgesehenen Funktion des im Betrieb gewünschten Luftausgleichs zwischen dem Gefrierraum und dem Kühlraum zusätzlich dann auch, wenn ein Unterdruck in dem Gefrierraum auftritt, die von außen über das Druckausgleichsventil einströmende Luft zum Gefrierraum leitet. It is preferably provided that the air-conducting connection is formed by an air duct system, which is designed for air exchange between the freezer compartment and the refrigerator compartment. Such, already existing air duct system can thus be used multifunctional, so that in addition to the intended by the basic technology of domestic refrigeration unit function of the desired air equalization between the freezer compartment and the refrigerator in addition then also when a negative pressure in the freezer compartment occurs from the outside via the pressure equalization valve incoming air to the freezer room leads.
Dadurch ist es bei einer derartigen Ausführung nicht erforderlich, zusätzliche Luftwege bereitzustellen, um im Falle eines auftretenden Unterdrucks diese von außen über das Druckausgleichsventil einströmende Luft gezielt zum Gefrierraum zu leiten. Dadurch werden Bauteile eingespart und das Haushaltskältegerät kann weiterhin kompakt ausgebildet sein, ohne dass das Volumen des Kühlraums und des Gefrierraums eingeschränkt wären. Es kann auch vorgesehen sein, dass die luftleitende Verbindung zumindest abschnittsweise entlang einer an der zumindest einen Tür angeordneten Dichtung ausgebildet ist. Durch eine derartige alternative Ausgestaltung kann ein individuellerer Strömungsweg für die einströmende Luft erreicht werden. Es kann in dem Zusammenhang eine sehr versteckte und platzsparende Anordnung realisiert werden. Auch ein relativ kurzer Strömungsweg kann dadurch definiert vorgegeben werden. As a result, in such an embodiment, it is not necessary to provide additional air passages in order, in the event of an occurring negative pressure, to direct this air flowing in from the outside via the pressure equalization valve to the freezer space in a targeted manner. As a result, components are saved and the household refrigerator can continue to be made compact without the volume of the refrigerator and the freezer compartment would be limited. It can also be provided that the air-conducting connection is formed at least in sections along a seal arranged on the at least one door. By such an alternative embodiment, a customized flow path for the incoming air can be achieved. It can be realized in the context of a very hidden and space-saving arrangement. A relatively short flow path can also be defined defined.
Vorzugsweise ist vorgesehen, dass an der Tür eine Dichtung angeordnet ist, die sich in eine Nut in einer Innenseite der Tür erstreckt. Das Druckausgleichsventil ist durch einen Verbreiterungsbereich der Nut und einen sich in den Verbreiterungsbereich erstreckenden Dichtungsbereich gebildet, wobei der Dichtungsbereich in Querschnittrichtung des Verbreiterungsbereichs in dem Verbreiterungsbereich bewegbar ist. Dies bedeutet, dass in Umlaufrichtung um die Nut diese an einer spezifischen Stelle, nämlich in dem Verbreiterungsbereich, einen größeren Nutquerschnitt aufweist, als außerhalb dieses Verbreiterungsbereichs. Da die Dichtung mit ihrem Dichtungsbereich, mit dem sie in der Nut angeordnet und darin gehalten ist, auch an dieser Stelle des Verbreiterungsbereichs vorzugsweise nicht verbreitert ist, ist dieser Dichtungsbereich im Verbreiterungsbereich, anders als außerhalb des Verbreiterungsbereichs, nicht passgenau darin eingepresst. Die Anordnung beziehungsweise Halterung des Dichtungsbereichs in diesem Verbreiterungsbereich ist derart, dass Luft dauerhaft in den Verbreiterungsbereich ein- und ausströmen kann und der Dichtungsbereich derart darin positioniert ist, dass das Druckausgleichsventil an dieser Stelle dauerhaft und druckunabhängig in beiden Strömungsrichtungen offen ist. It is preferably provided that a seal is arranged on the door, which extends into a groove in an inner side of the door. The pressure compensating valve is formed by a widening region of the groove and a sealing region extending in the widening region, wherein the sealing region is movable in the cross-cutting direction of the widening region in the widening region. This means that in the direction of rotation around the groove, it has a larger groove cross-section at a specific point, namely in the broadening region, than outside this broadening region. Since the seal with its sealing region, with which it is arranged in the groove and held therein, is preferably not widened at this point of the broadening region, this sealing region in the broadening area, unlike outside the broadening area, not accurately pressed into it. The arrangement or mounting of the sealing area in this widening area is such that air can flow in and out permanently into the widening area and the sealing area is positioned in such a way that the pressure compensation valve is permanently open and pressure-independent in both flow directions at this point.
Insbesondere ist vorgesehen, dass dieser Verbreiterungsbereich der Nut als wannenförmiger und sich in Richtung der Erstreckung der Nut betrachtet an gegenüberliegenden Enden des Verbreiterungsbereichs verjüngender Nutabschnitt ausgebildet ist. Ein derartiger bootförmiger Nutabschnitt begünstigt die Funktionalität des Druckausgleichsventils, insbesondere des Einwegeventils. Vorzugsweise ist vorgesehen, dass der Dichtungsbereich in Querschnittrichtung des Verbreiterungsbereichs betrachtet an gegenüberliegenden Seiten Dichtflügel aufweist. Es kann vorgesehen sein, dass der Dichtungsbereich, welcher sich in den Verbreiterungsbereich erstreckt, als Hohlbereich ausgebildet ist, sodass das Gewicht reduziert werden kann. In particular, it is provided that this widening region of the groove is designed as a trough-shaped groove section which, viewed in the direction of the extent of the groove, is tapered at opposite ends of the widening region. Such a boot-shaped groove section favors the functionality of the pressure compensation valve, in particular the one-way valve. It is preferably provided that, viewed in the cross-cutting direction of the broadening region, the sealing region has sealing wings on opposite sides. It can be provided that the sealing region, which extends into the widening region, is designed as a hollow region, so that the weight can be reduced.
Insbesondere ist an der Tür eine Dichtung angeordnet, die sich in eine Nut in einer Innenseite der Tür erstreckt. Das Druckausgleichsventil umfasst einen Verbreiterungsbereich der Nut und einen sich in den Verbreiterungsbereich erstreckenden Dichtungsbereich. Darüber hinaus ist vorgesehen, dass der Dichtungsbereich in Querschnittrichtung des Verbreiterungsbereichs in dem Verbreiterungsbereich strömungsdurchlässig angeordnet ist. Dies bedeutet, dass dieser Dichtungsbereich in diesem Verbreiterungsbereich daran nicht dichtend, insbesondere beabstandet und somit kontaktlos zur Innenseite dieses Verbreiterungsbereichs angeordnet ist. Dadurch kann an dieser Stelle auch das Hindurchströmen von Luft erfolgen. In particular, a seal is arranged on the door, which extends into a groove in an inner side of the door. The pressure compensation valve comprises a widening region of the groove and a sealing region extending into the widening region. In addition, it is provided that the sealing region is arranged in the cross-sectional direction of the broadening region in the broadening region flow-permeable. This means that this sealing region in this widening region is not sealed thereto, in particular spaced apart and thus arranged contactlessly to the inside of this widening region. As a result, the passage of air can take place at this point.
Das Druckausgleichsventil umfasst darüber hinaus außerhalb der Nut eine Dichtlippe, die im abdichtenden Zustand des Druckausgleichsventils an einem oberen Ende eines aus der Nut herausragenden und einen Nutschenkel der Nut verlängernden Schenkel anliegt. Durch diesen verlängernden Schenkel wird quasi die rinnenartige Ausgestaltung der Nut nach oben hin asymmetrisch verlängert (bei Betrachtung der Ausgestaltung in einer Ebene senkrecht zur Erstreckungsrichtung der Nut). Durch eine derartige Ausgestaltung des Druckausgleichsventils wird somit außerhalb der Nut das Öffnen und Schließen des Druckausgleichsventils durchgeführt. Das Freigeben und Schließen ist dadurch präziser möglich und somit auch die sichere Verschließung und das schnelle Freigeben ermöglicht. Indem diese Dichtlippe an der dem Ende dieses verlängernden Schenkels gegenüberliegenden Seite freiliegt, wird die Beweglichkeit zum Öffnen und Schließen nicht eingeschränkt. Ein durch beispielsweise Umgebungseinflüsse oder anderweitige Bedingungen sich in der Nut nicht gewünscht bewegender Dichtungsbereich, der im Stand der Technik diesbezüglich abschließend eine Druckausgleichseinrichtung darstellt, ist hier somit vermieden. Komplexe Bewegungen des Dichtungsbereichs, der sich in die Nut hinein erstreckt, sind bei der vorliegenden Ausführung daher nicht mehr erforderlich, da die dortige Geometrie und Position des Dichtungsbereichs ohnehin derart ausgestaltet ist, dass ein dauerhafter Spalt für die Durchströmung zwischen dem Dichtungsbereich und der Innenseite als Verbreiterungsbereich der Nut in beide Richtungen (in der Ebene senkrecht zur Erstreckungsrichtung der Nut betrachtet) gebildet ist. Darüber hinaus kann durch die oben genannte vorteilhafte Ausführung die Dichtlippe auch sehr filigran ausgestaltet sein, sodass sie hochflexibel ist und die Bewegbarkeit bezüglich des Öffnen und Schließens begünstigt ist. Insbesondere ist vorgesehen, dass die an einem außerhalb der Nut an einem Basiselement der Dichtung als abstehender Flügel beziehungsweise Lamelle ausgebildete Dichtlippe den Strömungsweg durch den Verbreiterungsbereich außerhalb des Verbreiterungsbereichs verschießt, wenn ein Luftdruck im Gefrierraum kleiner einem Unterdruck-Schwellwert ist. Diese Ausgestaltung ist dazu ausgebildet, den Strömungsweg zum Einströmen von Luft aus der Umgebung des Haushaltskältegeräts in den Kühlraum und von dort in den Gefrierraum freizugeben, wenn der Luftdruck im Gefrierraum kleiner dem Unterdruck-Schwellwert ist. Die Dichtlippe kann daher durch ihre hohe Flexibilität und filigrane und somit auch sehr dünne Ausgestaltung durch den auftretenden Unterdruck auch leicht angehoben werden, sodass auf einen unerwünscht auftretenden Unterdruck auch unverzüglich reagiert werden kann und das Druckausgleichsventil in dieser einen Richtung geöffnet werden kann. The pressure compensation valve further comprises outside the groove a sealing lip, which rests in the sealing state of the pressure compensating valve at an upper end of a protruding from the groove and extending a groove leg of the groove leg. As a result of this lengthening leg, the groove-like configuration of the groove is quasi asymmetrically extended upwards (when the design is viewed in a plane perpendicular to the extension direction of the groove). By such a configuration of the pressure compensation valve, the opening and closing of the pressure compensation valve is thus performed outside the groove. The release and closing is thus possible more precisely and thus also the safe closure and the quick release allows. By exposing this sealing lip at the opposite side of the end of this extending leg, the mobility for opening and closing is not restricted. A sealing region, which, for example, is not desired to move in the groove due to, for example, environmental influences or other conditions, and which in the prior art represents a pressure compensation device in this respect, is thus avoided here. Complex movements of the sealing area, which extends into the groove, are therefore no longer necessary in the present embodiment, since the local geometry and position of the sealing area is anyway designed such that a permanent gap for the flow between the sealing area and the inside as Broadening of the groove in both directions (viewed in the plane perpendicular to the extension direction of the groove) is formed. In addition, the sealing lip can also be designed very filigree by the above advantageous embodiment, so that it is highly flexible and the mobility is favored with respect to the opening and closing. In particular, it is provided that the sealing lip formed on a base element of the seal outside the groove on a base element of the seal shoots the flow path through the widening region outside the widening region when an air pressure in the freezer compartment is less than a negative pressure threshold value. This embodiment is designed to release the flow path for the inflow of air from the environment of the household refrigerating appliance into the refrigerator compartment and from there into the freezer compartment when the air pressure in the freezer compartment is less than the negative pressure threshold value. The sealing lip can therefore be easily raised by their high flexibility and filigree and thus also very thin design by the negative pressure that occurs, so that an undesirable negative pressure can also be reacted immediately and the pressure compensation valve can be opened in this one direction.
Insbesondere ist das Haushaltskältegerät ein No-Frost-Haushaltskältegerät. Ein No-Frost- Haushaltskältegerät ist mit einer No-Frost-Technik ausgestattet. Als No-Frost-Technik wird ein technisches Verfahren bezeichnet, bei welchem die Luftfeuchtigkeit in einem als Gefrierraum ausgebildeten Innenraum reduziert wird. Dadurch bereifen die Lebensmittel nicht oder deutlich reduziert und ein Abtauen des Gefrierraums kann entfallen beziehungsweise muss nur noch in deutlich reduzierten Zeitzyklen durchgeführt werden. Bei einer derartigen No-Frost-Technik liegen beispielsweise als Kühllamellen ausgebildete Kühlelemente und somit ein Wärmetauscher eines Sekundär-Kältekreislaufs in einem abgetrennten Bereich in dem Innenraum. Während der Kühlphase wird durch einen Lüfter die kalte Luft dann von diesem abgetrennten Bereich in den Innenraum und somit den Gefrierraum eingebracht. Diese Geräte sind dabei so ausgelegt, dass Luft durch alle Fächer des Innenraums zirkuliert und als Kreislauf wieder in den abgetrennten Bereich eintritt. Da kalte Luft weniger Feuchtigkeit hält, schlägt sich diese als Reif vornehmlich nur an dem Wärmetauscher des Sekundär-Kältekreislauf, der sich in dem abgetrennten Bereich befindet, und der kälteste Punkt im No-Frost Haushaltsgerät ist, der Kontakt mit Luft hat, nieder. Es kann dann vorgesehen sein, dass in spezifischen Zeitintervallen ein Abtaumodus durchgeführt wird, in dem dieser erste Wärmetauscher in dem abgetrennten Bereich abgetaut wird. Dazu ist insbesondere eine Heizeinrichtung im No-Frost- Haushaltskältegerät vorgesehen, durch welche ein Erwärmen dieses Wärmetauschers durchgeführt wird. Das dann aus der auftauenden Eisschicht entstehende Wasser kann über eine Ablaufrinne aus dem Innenraum und somit auch aus dem Gerät herauslaufen und kann in einer Sammelschale gesammelt werden, die auch als Verdunstungsbehälter dienen kann. Insbesondere ist der Lüfter in dem Abtaumodus deaktiviert, so dass der Gefrierraum weiterhin gekühlt bleibt. Durch die No-Frost-Technik wird das Vereisen von Kühlrippen deutlich reduziert und es sinkt die Luftfeuchtigkeit im gesamten Haushaltskältegerät, wodurch sich auch die Bildung von Eisschichten deutlich reduziert. In particular, the household refrigerator is a no-frost domestic refrigeration appliance. A no-frost domestic refrigeration appliance is equipped with a no-frost technology. As a no-frost technique, a technical process is referred to, in which the humidity is reduced in a designed as a freezer compartment interior. As a result, the food does not frost or significantly reduced and a defrosting of the freezer compartment can be omitted or only needs to be carried out in significantly reduced time cycles. In such a no-frost technique, for example, cooling elements designed as cooling fins, and thus a heat exchanger of a secondary refrigeration cycle, lie in a separated area in the interior space. During the cooling phase, the cold air is then introduced from this separated area in the interior and thus the freezer compartment by a fan. These devices are designed so that air circulates through all compartments of the interior and enters the cycle again in the separated area. Since cold air holds less moisture, it precipitates as frost primarily only at the heat exchanger of the secondary refrigeration cycle which is in the separated area and is the coldest point in the no-frost home appliance having contact with air. It can then be provided that at specific time intervals Defrosting mode is performed, in which this first heat exchanger is defrosted in the separated area. For this purpose, in particular, a heating device is provided in the no-frost domestic refrigeration appliance, by means of which a heating of this heat exchanger is carried out. The resulting then from the thawing ice layer water can run out of the interior and thus also from the device via a gutter and can be collected in a collecting bowl, which can also serve as an evaporation tank. In particular, the fan is deactivated in the defrost mode, so that the freezer compartment remains cooled. Thanks to the no-frost technology, the freezing of cooling fins is significantly reduced and the humidity in the entire domestic refrigeration unit drops, which also significantly reduces the formation of ice layers.
Mit Angaben „oben", „unten", „vorne", „hinten,", „Tiefenrichtung", „Breitenrichtung", „Höhenrichtung" etc. sind die bei bestimmungsgemäßen Gebrauch und bestimmungsgemäßem Anordnen des Geräts und bei einem dann vor dem Gerät stehenden und in Richtung des Geräts blickenden Beobachter gegebenen Positionen und Orientierungen angegeben. The terms "top", "bottom", "front", "rear", "depth direction", "width direction", "height direction", etc. are the intended use and intended arrangement of the device and at a then standing in front of the device and given in the direction of the device viewing observer given positions and orientations.
Weitere Merkmale der Erfindung ergeben sich aus den Ansprüchen, den Figuren und der Figurenbeschreibung. Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombinationen, sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen verwendbar, ohne den Rahmen der Erfindung zu verlassen. Es sind somit auch Ausführungen von der Erfindung als umfasst und offenbart anzusehen, die in den Figuren nicht explizit gezeigt und erläutert sind, jedoch durch separierte Merkmalskombinationen aus den erläuterten Ausführungen hervorgehen und erzeugbar sind. Es sind auch Ausführungen und Merkmalskombinationen als offenbart anzusehen, die somit nicht alle Merkmale eines ursprünglich formulierten unabhängigen Anspruchs aufweisen. Es sind darüber hinaus Ausführungen und Merkmalskombinationen, insbesondere durch die oben dargelegten Ausführungen, als offenbart anzusehen, die über die in den Rückbezügen der Ansprüche dargelegten Merkmalskombinationen hinausgehen oder abweichen. Ausführungsbeispiele der Erfindung werden nachfolgend anhand schematischer Zeichnungen näher erläutert. Es zeigen: Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively indicated combination but also in other combinations without the scope of the invention leave. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim. Moreover, embodiments and combinations of features, in particular by the embodiments set out above, are to be regarded as disclosed, which go beyond or deviate from the combinations of features set out in the back references of the claims. Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:
Fig. 1 eine vereinfachte perspektivische Darstellung eines Ausführungsbeispiels eines Haushaltskältegeräts; Fig. 1 is a simplified perspective view of an embodiment of a household refrigerator;
Fig. 2 eine Ansicht auf eine Innenseite einer Tür des Haushaltskältegeräts gemäß Fig. 1 ; Fig. 3 eine Schnittdarstellung durch die Tür gemäß Fig. 2; Fig. 4 eine Ansicht auf einen Teilbereich der Tür gemäß Fig. 2; FIG. 2 shows a view of an inside of a door of the household refrigerating appliance according to FIG. 1; FIG. Fig. 3 is a sectional view through the door of FIG. 2; 4 shows a view of a partial region of the door according to FIG. 2;
Fig. 5 eine Ansicht auf den Teilausschnitt gemäß Fig. 4 mit bereichsweise abgehobener Dichtlippe einer Dichtung; und 5 is a view of the partial section of Figure 4 with partially lifted sealing lip of a seal ..; and
Fig. 6 eine Ansicht auf den Teilausschnitt gemäß Fig. 4 und 5 mit aus einem Verbreiterungsbereich entnommenem Dichtungsbereich der Dichtung. Fig. 6 is a view of the partial section of FIG. 4 and 5 with removed from a widening range sealing region of the seal.
In den Figuren werden gleiche oder funktionsgleiche Elemente mit den gleichen Bezugszeichen versehen. In the figures, identical or functionally identical elements are provided with the same reference numerals.
In Fig. 1 ist in einer vereinfachten Darstellung ein Haushaltskältegerät 1 gezeigt, welches ein Kühl-Gefrier-Kombigerät ist und welches zum Aufnehmen von Lebensmitteln ausgebildet ist. Das Haushaltskältegerät 1 umfasst einen Korpus beziehungsweise ein Gehäuse 2. In dem Gehäuse 2 sind einerseits ein Gefrierraum 3 und andererseits ein Kühlraum 4 angeordnet. In dem Kühlraum 4 können Lebensmittel in einem Temperaturbereich gelagert werden, der bezüglich einer Lagerung von Lebensmitteln unterschiedlich zu einem Temperaturbereich in dem Gefrierraum 3 ist. Wie in der Darstellung in Fig. 2 zu erkennen ist, ist der Kühlraum 4 von dem Gefrierraum 3 separiert, und jeweils durch individuelle Wände sind der Gefrierraum 3 und der Kühlraum 4 begrenzt. In Fig. 1, a household refrigeration appliance 1 is shown in a simplified representation, which is a combined refrigerated-freezer and which is designed for receiving food. The household refrigerating appliance 1 comprises a body or a housing 2. In the housing 2, a freezing space 3 on the one hand and a cooling space 4 on the other hand are arranged. In the cooling space 4, foods can be stored in a temperature range that is different with respect to a storage of food to a temperature range in the freezer compartment 3. As can be seen in the illustration in FIG. 2, the cooling space 4 is separated from the freezer space 3, and the freezer space 3 and the cooling space 4 are limited in each case by individual walls.
Darüber hinaus ist auch zu erkennen, dass der Gefrierraum 3 durch eine Tür 5 verschließbar ist, die schwenkbar an dem Gehäuse 2 angeordnet ist. Darüber hinaus ist der Kühlraum 4 durch eine eigene separate Tür 6 verschließbar, die ebenfalls schwenkbar an dem Gehäuse 2 angeordnet ist. Die Türen 5 und 6 sind als Frontbauteile des Haushaltskältegeräts 1 angeordnet und sie verdecken die jeweiligen Räume, nämlich den Gefrierraum 3 und den Kühlraum 4 jeweils nur über die jeweiligen Frontseiten. Insbesondere deckt somit die Tür 6 nicht auch noch den Gefrierraum 3 mit ab. Vorzugsweise sind die Türen 5 und 6 im geschlossenen Zustand in einer gemeinsamen Ebene angeordnet, und in der x-y-Ebene überlappungsfrei positioniert, wobei x die Breitenrichtung und y die Höhenrichtung des Haushaltskältegeräts 1 beschreibt. In addition, it can also be seen that the freezer compartment 3 can be closed by a door 5, which is arranged pivotably on the housing 2. In addition, it is the refrigerator 4 closed by its own separate door 6, which is also pivotally mounted on the housing 2. The doors 5 and 6 are arranged as front components of the household refrigerating appliance 1 and they cover the respective rooms, namely the freezer compartment 3 and the refrigerator compartment 4 respectively only via the respective front sides. In particular, thus does not cover the door 6 and the freezer compartment 3 with from. Preferably, the doors 5 and 6 are arranged in the closed state in a common plane, and positioned without overlap in the xy plane, where x is the width direction and y describes the height direction of the household refrigerator 1.
In einer vorteilhaften Ausführung ist das Haushaltskältegerät 1 als No-Frost- Haushaltskältegerät ausgebildet. Zum Luftaustausch ist der Gefrierraum 3 mit dem Kühlraum 4 durch ein nicht gezeigtes und für diesen Gerätetyp erforderliches Luftkanalsystem ausgebildet. In an advantageous embodiment, the household refrigerator 1 is designed as a no-frost household refrigeration appliance. For air exchange of the freezer compartment 3 is formed with the cooling chamber 4 by a not shown and required for this type of equipment air duct system.
Das Haushaltskältegerät 1 umfasst darüber hinaus auch noch eine Druckausgleichseinrichtung, die zum Ausgleich eines Unterdrucks insbesondere zumindest in dem Gefrierraum 3 ausgebildet ist. The domestic refrigeration appliance 1 also includes a pressure compensation device, which is designed to compensate for a negative pressure, in particular at least in the freezer compartment 3.
In Fig. 2 ist in dem Zusammenhang die Tür 6 mit einer Ansicht auf eine Innenseite 7 gezeigt. Die Innenseite 7 ist dem Kühlraum 4 im geschlossenen Zustand der Tür 6 zugewandt. Beispielhaft sind hier auch Türabsteller 8, 9 und 10 gezeigt, die an dieser Innenseite 7 angeordnet sind. Die Tür 6 umfasst darüber hinaus an ihrer Innenseite 7 eine umlaufende Dichtung 1 1 . Diese liegt im geschlossenen Zustand der Tür 6 an einem Flansch 12 (Fig. 1 ) an. Ein Druckausgleichsventil 13a, wie es in Fig. 2 durch ihre örtliche Lage vereinfacht angedeutet ist und als eines von beispielsweise zwei Druckausgleichsventilen 13a und 13b gezeigt ist, ist in der Schnittdarstellung in Fig. 3 näher gezeigt. Die Schnittdarstellung ist in dem Zusammenhang in der x-z-Ebene dargestellt, und somit senkrecht zu einer Erstreckungsrichtung der Nut 14, wobei z die Tiefenrichtung des Haushaltskältegeräts 1 bezeichnet. In Fig. 2, the door 6 is shown with a view of an inner side 7 in the context. The inside 7 faces the refrigerator 4 in the closed state of the door 6. By way of example, door racks 8, 9 and 10 are also shown, which are arranged on this inner side 7. The door 6 also includes on its inner side 7 a circumferential seal 1 first This is in the closed state of the door 6 on a flange 12 (Fig. 1). A pressure compensating valve 13a, as indicated in simplified form in FIG. 2 by its local position and shown as one of, for example, two pressure compensating valves 13a and 13b, is shown in more detail in the sectional view in FIG. The sectional view is shown in the context in the x-z plane, and thus perpendicular to an extension direction of the groove 14, wherein z denotes the depth direction of the household refrigerator 1.
Wie zu erkennen ist, ist an der Innenseite 7 eine Nut 14 ausgebildet. Die Nut 14 weist an der Stelle, an der das Druckausgleichsventil 13a ausgebildet ist, einen Verbreiterungsbereich 15 auf. Der Verbreiterungsbereich 15 weist daher gegenüber einer Nutweite, die sich senkrecht zur Umlaufrichtung der Nut bemisst und in Fig. 3 in x- Richtung zu betrachten ist, somit eine größere Wannenweite auf als außerhalb der Stelle, an der das Druckausgleichsventil 13b gestaltet ist. Die Wannenweite ist somit in einer Ebene senkrecht zu einer Erstreckungsrichtung der Nut 14 betrachtet. As can be seen, a groove 14 is formed on the inside 7. The groove 14 has at the point where the pressure compensating valve 13a is formed, a Widening area 15. The widening region 15 therefore has a greater width than a groove width which is measured perpendicular to the direction of rotation of the groove and is to be considered in the x direction in FIG. 3, than outside the point at which the pressure compensation valve 13b is designed. The tub width is thus considered in a plane perpendicular to an extension direction of the groove 14.
Wie in Fig. 3 zu erkennen ist, umfasst die Dichtung 1 1 ein Basiselement 16, welches außerhalb der Nut 14 und auch außerhalb des Verbreiterungsbereichs 15 angeordnet ist. An das Basiselement 16 anschließend ist ein Dichtungsbereich 17 der Dichtung 1 1 ausgebildet, der sich in die Nut 14 und auch den Verbreiterungsbereich 15 hinein erstreckt. Dieser Dichtungsbreich 17 liegt außerhalb des Verbreiterungsbreich 15 an den Innenseiten der Nut 14 an und ist darin quasi gehalten. In diesem Verbreiterungsbereich 15 hingegen ist dieser Dichtungsbereich 17 beabstandet zu den Wänden beziehungsweise der Innenseite des Verbreiterungsbereichs 15 angeordnet, sodass ein dauerhaft vorhandener Spalt 18 ausgebildet ist, in den Luft 19 einströmen kann. As can be seen in FIG. 3, the seal 1 1 comprises a base element 16, which is arranged outside the groove 14 and also outside the widening region 15. A sealing region 17 of the seal 11, which extends into the groove 14 and also the widening region 15, is then formed on the base element 16. This Dichtungsbreich 17 is outside of the widening range 15 on the inner sides of the groove 14 and is quasi held therein. In contrast, in this widening region 15, this sealing region 17 is arranged at a distance from the walls or the inside of the widening region 15, so that a permanently existing gap 18 is formed, into which air 19 can flow.
Wie zu erkennen ist, ist ein Nutschenkel 20 auch außerhalb der Nut 14 und insbesondere außerhalb des Verbreiterungsbereichs 15 durch einen verlängernden Schenkel 21 verlängert. Dieser erstreckt sich im geschlossenen Zustand der Tür 6 in Richtung zum Kühlraum 4 hin. Dieser Schenkel 21 umfasst ein dem Verbreiterungsbereich 15 abgewandtes oberes Ende 22. An diesem oberen Ende 22 liegt eine Dichtlippe 23 der Dichtung 1 1 an. Die Dichtlippe 23 ist eine dünne Lamelle beziehungsweise ein Flügel, der von dem Basiselement 16 abstehend angeordnet ist. Auch diese Dichtlippe 23 als Bestandteil des Druckausgleichsventils 13a ist außerhalb des Verbreiterungsbereichs 15 angeordnet und im Hinblick auf ihren Durchläse geöffnet oder geschlossen. Das Druckausgleichsventil 13a ist ein Einwegeventil, was bedeutet, dass nur in eine Richtung, nämlich von außerhalb des Haushaltskältegeräts 1 , Luft in den Kühlraum 4 und somit auch in den Gefrierraum 3 hinein Luft strömen kann. Die Dichtlippe 23 ist gemäß der Darstellung in Fig. 3 auch so orientiert, dass sie von dem Basiselement 16 schräg in Richtung zu diesem oberen Ende 22 hin geneigt ist und dieses obere Ende 22 von oben auch überlappend abdeckt. As can be seen, a groove leg 20 is also extended outside the groove 14 and in particular outside the widening region 15 by an extending leg 21. This extends in the closed state of the door 6 in the direction of the refrigerator 4. This leg 21 comprises a widening region 15 facing away from the upper end 22. At this upper end 22 is a sealing lip 23 of the seal 1 1 at. The sealing lip 23 is a thin lamella or a wing, which is arranged projecting from the base element 16. This sealing lip 23 as part of the pressure compensation valve 13a is disposed outside the widening region 15 and opened or closed with respect to their Durchläse. The pressure compensation valve 13a is a one-way valve, which means that only in one direction, namely from outside the domestic refrigerator 1, air in the refrigerator 4 and thus also in the freezer compartment 3 in air can flow. The sealing lip 23 is also oriented as shown in FIG. 3 so that it is inclined by the base member 16 obliquely toward this upper end 22 and this upper end 22 also covers overlapping from above.
Ist in dem Gefrierraum 3 ein Luftdruck als Unterdruck vorhanden, der kleiner einem Unterdruck-Schwellwert ist und somit ein niederer Druck vorhanden ist, als der Unterdruck-Schwellwert, so wird die Dichtlippe 23 automatisch von dem oberen Ende 22 angehoben und in den Kühlraum 4 quasi hinein gezogen, sodass an dieser Stelle dann das Druckausgleichsventil 13a öffnet. Is in the freezer compartment 3, an air pressure as negative pressure present, which is smaller than a negative pressure threshold and thus a lower pressure is present than the Low pressure threshold, the sealing lip 23 is automatically lifted from the upper end 22 and pulled into the refrigerator 4 quasi in, so at this point then the pressure compensation valve 13 opens a.
Ist der Luftdruck im Gefrierraum 3 größer dem Unterdruck-Schwellwert und somit ein höherer Druck vorherrschend als der Unterdruck-Schwellwert, so ist die Dichtlippe 23 automatisch geschlossen und ein Hindurchströmen von Luft von der Umgebung in das Haushaltskältegerät 1 hinein ist ebenso unterbunden wie ein Herausströmen von dem Gefrierraum 3 oder dem Kühlraum 4 aus dem Haushaltskältegerät 1 heraus. In Fig. 4 ist die Tür 6 im Bereich des Druckausgleichsventils 13b gezeigt. Es ist zu erkennen, dass die Dichtlippe 23 von der Innenseite 7 her betrachtet dieses obere Ende 22 sichtseitig abdeckt und somit auch den Spalt zwischen dem Basiselement 16 und dem Schenkel 21 abdeckt, wodurch auch der Verbreiterungsbereich 15 abgedeckt ist. In der Darstellung gemäß Fig. 5 ist zum besseren Verständnis die Dichtlippe 23 weggedrückt gezeigt, sodass auf dem Verbreiterungsbereich 15 und das obere Ende 22 des Schenkels 21 geblickt werden kann. Darüber hinaus ist auch das Basiselement 16 dann zu erkennen, wie es sich dann mit dem Dichtungsbereich 17 in den Verbreiterungsbereich 15 hinein erstreckt. If the air pressure in the freezer compartment 3 is greater than the negative pressure threshold value and thus a higher pressure than the negative pressure threshold value, then the sealing lip 23 is automatically closed and a flow of air from the environment into the domestic refrigerator 1 is prevented as well as an outflow of the freezer compartment 3 or the refrigerator 4 from the household refrigerator 1 out. 4, the door 6 is shown in the region of the pressure compensation valve 13b. It can be seen that the sealing lip 23, seen from the inside 7, covers this upper end 22 on the visible side and therefore also covers the gap between the base element 16 and the leg 21, whereby the widening area 15 is also covered. In the representation according to FIG. 5, the sealing lip 23 is shown pushed away for better understanding, so that it is possible to look at the widening area 15 and the upper end 22 of the leg 21. In addition, the base element 16 can then be seen, as it then extends into the widening area 15 with the sealing area 17.
In einer weiteren Darstellung gemäß Fig. 6 ist die Dichtung 1 1 im Verbreiterungsbereich 15 komplett entnommen, um auch die Ausgestaltung und Formgebung des Verbreiterungsbereichs 15 zu erkennen. Wie in dem Zusammenhang gezeigt ist, ist dieser Verbreiterungsbereich 15 in Draufsicht wannenartig beziehungsweise bootsformig. Dies bedeutet, dass in Erstreckungsrichtung der Nut 14 betrachtet dieser Verbreiterungsbereich 15 an seinen gegenüberliegenden Enden 15a und 15b verjüngt ausgebildet ist. Bezugszeichenliste In a further illustration according to FIG. 6, the seal 11 is completely removed in the broadening area 15 in order to also recognize the configuration and shaping of the broadening area 15. As shown in the context, this widening region 15 in a plan view is like a boat or bootsformig. This means that viewed in the extension direction of the groove 14, this widening region 15 is designed to be tapered at its opposite ends 15a and 15b. LIST OF REFERENCE NUMBERS
1 Haushaltskältegerät 1 household refrigerator
2 Gehäuse  2 housings
3 Gefrierraum  3 freezer room
4 Kühlraum  4 refrigerator
5 Tür  5 door
6 Tür  6 door
7 Innenraum  7 interior
8 Türabsteller  8 door racks
9 Türabsteller  9 door racks
10 Türabsteller  10 door racks
1 1 Dichtung  1 1 seal
12 Flansch  12 flange
13 Druckausgleichsventil  13 pressure balance valve
13b Druckausgleichsventil  13b pressure balance valve
14 Nut  14 groove
15 Verbreiterungsbereich  15 broadening range
15a Ende  15a end
15b Ende  15b end
16 Basiselement  16 basic element
17 Dichtungsbereich  17 sealing area
18 Spalt  18 gap
19 Luft  19 air
20 Nutschenkel  20 groove legs
21 Schenkel  21 thighs
22 oberes Ende  22 upper end
23 Dichtlippe  23 sealing lip
24  24

Claims

PATENTANSPRÜCHE
Haushaltskältegerät (1 ) mit einem Gehäuse (2) in dem ein Gefrierraum (3) ausgebildet ist, und mit einem Druckausgleichsventil (13a, 13b), welches zum Ausgleich eines Unterdrucks im Gefrierraum (3) ausgebildet ist, dadurch gekennzeichnet, dass in dem Gehäuse (2) ein Kühlraum (4) ausgebildet ist, der durch eine an dem Gehäuse (2) angeordneten Tür (6) verschließbar ist, und an der Tür (6) das zumindest eine Druckausgleichsventil (13a, 13b) ausgebildet ist, wobei der Kühlraum (4) luftleitend mit dem Gefrierraum (3) zum mittels dem Druckausgleichsventil (13a, 13b) erfolgenden Ausgleich des Unterdrucks im Gefrierraum (3) verbunden ist. Domestic refrigerating appliance (1) with a housing (2) in which a freezer compartment (3) is formed, and with a pressure compensation valve (13a, 13b) which is designed to compensate for a negative pressure in the freezer compartment (3), characterized in that in the housing (2) a cooling space (4) is formed which can be closed by a door (6) arranged on the housing (2), and the at least one pressure compensation valve (13a, 13b) is formed on the door (6), wherein the cooling space (4) is air-conductively connected to the freezer compartment (3) for compensating the negative pressure in the freezer compartment (3) by means of the pressure compensation valve (13a, 13b).
Haushaltskältegerät (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass das Druckausgleichsventil (13a, 13b) ein Einwegeventil ist. Domestic refrigerating appliance (1) according to claim 1, characterized in that the pressure compensating valve (13a, 13b) is a one-way valve.
Haushaltskältegerät (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die luftleitende Verbindung durch ein bestehendes Luftkanalsystem ausgebildet ist, welches zum Luftaustausch zwischen dem Gefrierraum (3) und dem Kühlraum (4) ausgebildet ist. Domestic refrigerating appliance (1) according to claim 1 or 2, characterized in that the air-conducting connection is formed by an existing air duct system, which is designed for air exchange between the freezer compartment (3) and the cooling space (4).
Haushalskältegerät (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die luftleitende Verbindung zumindest abschnittweise entlang einer an der zumindest einen Tür (6) angeordneten Dichtung (1 1 ) ausgebildet ist. A domestic refrigeration appliance (1) according to claim 1 or 2, characterized in that the air-conducting connection is formed at least in sections along a seal (11) arranged on the at least one door (6).
Haushaltskältegerät (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an der Tür (6) eine Dichtung (1 1 ) angeordnet ist, die sich in eine Nut (14) in einer Innenseite (7) der Tür (6) erstreckt, wobei das Druckausgleichsventil (13, 13b) durch einen Verbreiterungsbereich (15) der Nut (14) und einen sich in den Verbreiterungsbereich (15) erstreckenden Dichtungsbereich (17) gebildet ist, und der Dichtungsbereich (17) in Querschnittrichtung des Verbreiterungsbereichs (15) in dem Verbreiterungsbereich (15) in beide Richtungen strömungsdurchlässig angeordnet ist, und das Druckausgleichsventil (13a, 13b) außerhalb der Nut (14) eine Dichtlippe (23) aufweist, die im abdichtenden Zustand des Druckausgleichsventils (13a, 13b) an einem oberen Ende (22) eines aus dem Verbreiterungsbereich (15) herausragenden und einen Nutschenkel (20) des Verbreiterungsbereichs (15) verlängernden Schenkel (21 ) anliegt. Domestic refrigerating appliance (1) according to one of the preceding claims, characterized in that on the door (6) a seal (1 1) is arranged, which extends into a groove (14) in an inner side (7) of the door (6), wherein the pressure compensating valve (13, 13b) is formed by a widening portion (15) of the groove (14) and a sealing portion (17) extending into the widening portion (15), and the sealing portion (17) in the cross-cutting direction of the widening portion (15) in FIG the widening region (15) is arranged flow-permeable in both directions, and the pressure compensation valve (13a, 13b) outside the groove (14) has a sealing lip (23) which, in the sealing state of the pressure compensation valve (13a, 13b) at an upper end (22) of one of the widening region (15) outstanding and a groove leg (20) of the widening region (15) extending leg (21) is applied.
Haushaltskältegerät (1 ) nach Anspruch 5, dadurch gekennzeichnet, dass die an einem außerhalb des Verbreiterungsbereichs (15) an einem Basiselement (16) der Dichtung (1 1 ) als abstehender Flügel ausgebildete Dichtlippe (23) den Strömungsweg durch den Verbreiterungsbereich (15) außerhalb des Verbreiterungsbereichs (15) verschließt, wenn ein Luftdruck im Gefrierraum (3) niedriger einem Unterdruck-Schwellwert ist, und den Strömungsweg zum Einströmen von Luft aus der Umgebung des Haushaltskältegeräts (1 ) in den Kühlraum (4) und von dort in den Gefrierraum (3) freigibt, wenn der Luftdruck im Gefrierraum (3) höher dem Unterdruck-Schwellwert ist. Domestic refrigerating appliance (1) according to claim 5, characterized in that on a outside of the widening region (15) on a base element (16) of the seal (1 1) formed as a projecting wing sealing lip (23) the flow path through the widening region (15) outside the widening region (15) closes, when an air pressure in the freezer compartment (3) is lower than a negative pressure threshold, and the flow path for the flow of air from the environment of the household refrigerating appliance (1) into the cold room (4) and from there into the freezer compartment ( 3) releases when the air pressure in the freezer compartment (3) is higher than the negative pressure threshold.
Haushaltskältegerät (1 ) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Verbreiterungsbereich (15) als wannenförmiger und sich in Richtung der Erstreckung der Nut (14) betrachtet an gegenüberliegenden Enden (15a, 15b) verjüngender Nutabschnitt ausgebildet ist. Domestic refrigerating appliance (1) according to claim 5 or 6, characterized in that the widening region (15) as a trough-shaped and in the direction of the extension of the groove (14) viewed at opposite ends (15a, 15b) tapered groove portion is formed.
Haushaltskältegerät (1 ) nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Dichtlippe (23) bei Betrachtung der Innenseite (7) der Tür (6) den Verbreiterungsbereich (15) sichtseitig bedeckt. Domestic refrigerating appliance (1) according to one of claims 5 to 7, characterized in that the sealing lip (23) when viewing the inside (7) of the door (6) the visible area covered by the widening area (15).
Haushaltskältegerät (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es ein No-Frost-Haushaltskältegerät ist. Domestic refrigeration appliance (1) according to one of the preceding claims, characterized in that it is a no-frost household refrigeration appliance.
EP16774476.2A 2015-10-20 2016-09-27 A household refrigeration appliance with a cooling compartment, a freezing compartment and a pressure equalising valve Active EP3365623B1 (en)

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CN204494950U (en) * 2015-02-13 2015-07-22 合肥美菱股份有限公司 A kind of pressure balancing structure of direct cooling refrigerator refrigerating chamber
CN104729186B (en) * 2015-04-07 2018-11-13 合肥华凌股份有限公司 Refrigerator

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CN108139135B (en) 2020-09-04
EP3365623B1 (en) 2021-03-10
CN108139135A (en) 2018-06-08
PL3365623T3 (en) 2021-08-30
DE102015220351A1 (en) 2017-04-20
WO2017067753A1 (en) 2017-04-27

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