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

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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)
• Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

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Publications (2)

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ID=57018131

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• 2015
  • 2015-10-20 DE DE102015220351.4A patent/DE102015220351A1/de not_active Withdrawn
• 2016
  • 2016-09-27 EP EP16774476.2A patent/EP3365623B1/fr active Active
  • 2016-09-27 WO PCT/EP2016/072892 patent/WO2017067753A1/fr not_active Ceased
  • 2016-09-27 PL PL16774476T patent/PL3365623T3/pl unknown
  • 2016-09-27 CN CN201680061375.6A patent/CN108139135B/zh active Active

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