DE102012207684A1 - Cooling apparatus such as refrigerator used in house, has air duct that is provided to pass the cool air produced by storage material in one cooling inner space into the other cooling inner space - Google Patents

Abstract

The cooling apparatus (1) has a refrigeration circuit for cooling a storage material (7) in a cooling storage unit (5). A primary cooling inner space (3a) is connected with a secondary cooling inner space (3b) by a lockable air duct (12). The secondary cooling inner space is formed for storing the to-be-cooled item. The cool air produced by the storage material in the primary cooling inner space is passed into the secondary cooling inner space through the air duct.

Description

The invention relates to a household refrigerator with a first coolable interior for storing refrigerated goods, wherein the household refrigerating appliance has a cold storage with a storage material. The household refrigerator also includes a refrigeration cycle for cooling the storage material.

From the DE 10 2010 041 951 A1 a refrigeration device is known as household refrigeration appliance according to the preamble of claim 1. The household refrigerator includes a first refrigeration circuit which is a primary circuit, the primary circuit having an evaporator, a compressor and a condenser. The evaporator is arranged in a container in which a storage material in the form of a PCM (Phase Change Material) is arranged. The household refrigerating appliance moreover comprises a second refrigeration circuit designed as a secondary circuit, which has two heat exchangers, wherein a heat exchanger is arranged inside the container with the storage material and a second heat exchanger is arranged in the coolable interior. In addition, a pump is included in the secondary circuit. The container with the storage material is decoupled from the interior by an insulating wall. In further embodiments, moreover, it can be provided that an additional evaporator is arranged in the interior, which is thermally coupled to the heat exchanger of the secondary circuit, which is located in the interior. This additional evaporator is also connected to the primary circuit. In a further embodiment, it is provided that the heat exchanger located outside of the container with the storage material is located in the interior of the household refrigerating appliance and communicates via lines with the pumpable storage material, in which case the pumpable storage material is a pasty mixture of frozen and non-frozen components is executed and can also be referred to as "slurry". This storage material is pumped via the pipes through the heat exchanger via a circulating pump.

In addition, from the DE 10 2010 041 952 A1 a refrigerator known as household refrigeration appliance. In this embodiment, it is provided that in the region of a rear wall of the inner container of the household refrigerating appliance, however, an evaporator of a refrigeration cycle separate from the coolable inner space by a heat-insulating wall is arranged. The evaporator is thermally coupled to a cold storage, which has a storage material. The cold storage is disposed within an air channel formed between the wall portion of the insulating container and the heat-insulating wall, which air channel is coupled to the interior, with corresponding flaps being provided.

By known from the prior art domestic refrigerators, it is possible to operate them both in a network operation as well as in a decoupled from the grid operation. Even if there is no direct electrical power supply from the mains, such a household refrigerator is also fully operational operable.

Another advantage of household refrigerators, which have two separate refrigeration circuits, which are thermally coupled together, is the fact that the interior of the household refrigerator is cooled by a heat exchanger and the storage material. Even if the first refrigeration cycle is not in operation because, for example, no electrical energy from an electrical energy supply network for the refrigeration device is available, the above-mentioned network-independent operation is possible.

It is an object of the present invention, a household refrigeration appliance, which has at least one cold storage with a storage material to improve in terms of efficient cooling effect.

This object is achieved by a household refrigerator according to the independent claim.

The domestic refrigerator according to the invention comprises a first coolable interior for storing refrigerated goods. The household refrigerating appliance moreover comprises at least one cold storage with a storage material which is designed to store thermal energy in the form of cold.

The household refrigerator includes a refrigeration cycle for cooling the storage material. In addition, the household refrigerator on a second coolable interior for storing refrigerated goods. The second coolable interior is connected to the first coolable interior by at least one closable air duct, wherein in the first interior space generated by the storage material cold via the air channel in the second interior is conductive. Such an embodiment of a household refrigerating appliance achieves an improved cooling effect in the interior of the household refrigerating appliance. Thus, it is possible to specifically cool two separate internal spaces, with the cold storage with the storage material serving for this purpose. On the one hand can be made possible by the plurality of interiors, the inclusion of a larger amount of refrigerated goods and / or a variety of refrigerants in the interiors. In addition, through Such a cold storage with a storage material and an operation of the household refrigerator then possible if no external electrical power supply to an external power supply network is present, then to be able to effect a corresponding cooling in the household refrigerator. Through the cold storage a sufficient over a long period, the full function of the household refrigeration unit maintaining cooling effect is also achieved in off-grid operation.

It is preferably provided that at least two air ducts are formed, wherein a fan is arranged adjacent to or in an air duct. By such a configuration, a very specific air circulation and thus flow effect can be achieved. The specific position of the fan to an air duct optimizes this flow generation. In addition, even with an arrangement of the fan in such an air duct and a very space-minimized design can be achieved.

It is preferably provided that both air channels can be closed by flaps. The flow effect and air circulation can thus be made extremely precise and individualized. In addition, it is possible that with closed flaps, the two interiors are completely separated from each other.

Preferably, a control and / or regulating unit is formed, which operates the fan and the flaps for introducing the cold air from the colder first into the warmer second interior, depending on the temperatures in the interior spaces. In particular, it is provided that the operation by the control and / or regulating unit takes place at least as a function of the temperature in the second interior.

It is preferably provided that at least one air channel is formed in a wall forming the bottom of the first interior and the ceiling of the second interior. A particularly direct connection between the two interiors with a very short-path air duct is achieved.

It can also be provided that at least one air duct is formed in a vertical side wall or a rear wall or a door of the household refrigerating appliance. By such a configuration, alternatives to a breakthrough in the ground can be made, so that the floor area can be maximized and can be formed virtually without interruptions for air ducts.

Preferably, it is provided that the refrigeration cycle comprises an evaporator, which is thermally coupled to the cooling of the storage material with this, in particular on the cold storage outside is arranged directly or is arranged in the cold storage in the storage material. About such an evaporator, a particularly effective cooling of the cold accumulator can be achieved and this are also completely advantageous and efficiently frozen completely.

The evaporator is preferably designed as a plate evaporator. As a result, the largest possible area can be uniformly cooled or frozen.

It is preferably provided that the refrigeration cycle can be coupled to an external energy supply network for the electrical energy supply of the household refrigerating appliance and, in the coupled state, the cold storage can be frozen by the active refrigeration cycle.

In particular, it is provided that the refrigeration cycle can be coupled to an external energy supply network for supplying electrical energy and, in the decoupled state, the cooling of at least the first internal space is effected by the cold stored in the, in particular frozen, storage material. This cold entry preferably takes place when the refrigeration cycle is deactivated.

The storage material is in particular a PCM material, to which substances or mixtures of substances can be used, which has a melting point or phase change point just below the mixed target temperatures of an interior to be cooled.

About the switched into the refrigeration circuit evaporator, which is thermally coupled to the cold storage, can be frozen in a network operation of the household refrigerator, the cold storage and the temperature can be controlled in the first interior. In off-grid operation, the temperature of the first interior can not be actively controlled, but it turns in the first interior a temperature just above the phase change point of the storage material. In this off-grid operation, the preferably completely frozen cold storage absorbs heat and thereby thaws. Due to the heat absorption of the first interior is cooled, which can be done via the air ducts and a corresponding cooling of the second interior.

In addition, it is envisaged that when the household refrigerator is operated independently of the mains and thus decoupled from the external power grid or with a significantly reduced power consumption compared to a normal operating mode, then the frozen Storage material or the frozen cold storage absorbs heat from the interior of the household refrigerator, preferably without the refrigeration cycle must be activated or turned on.

The low power requirements of the fan and the control and / or regulating unit can be obtained in the coupled state with the external power supply network from this network or be covered in off-grid operation by a small battery of household refrigeration appliance itself, whereby a complete network-independent operation of the refrigerator at low Power consumption from the battery over a relatively long period of time, which may be longer than 20 hours, is easily possible and can be done with full functionality of the household refrigerator.

In an advantageous embodiment of the household refrigerating appliance, provision is made for the cold store to extend on a ceiling and / or a rear wall of the first interior. The cold storage can be arranged in the first interior. However, it can also be at least partially integrated in a wall bounding the first interior, for example the ceiling and / or the rear wall.

Preferably, the cold storage is L-shaped and in particular arranged in this regard lying. It can therefore be extremely space-minimized and designed very flat. In addition, the accessibility to the interior is not restricted by such a configuration. In addition, the largest possible surface of the cold accumulator is formed by such a shape, so that a particularly noteworthy thermal energy delivery to the first interior is achieved, which can be given in particular very evenly to the volume of the first interior.

It is preferably provided that the cold storage extends over the entire height of the first interior. Additionally or instead, it can also be provided that the cold storage extends at least partially over the depth of the first interior. It is preferably provided that the cold accumulator extends only partially over the depth and recessed against a front end of the first interior, in particular a ceiling of the first interior, is formed. The above advantages can be particularly realized.

In a further embodiment it can be provided that the cold storage is arranged on a wall forming the bottom of the first interior. In particular, it is provided in such a design that the air ducts are formed adjacent to this cold storage.

Preferably, in a cross-sectional view of the household refrigerating appliance, the air ducts are formed on opposite sides of the cold storage in the bottom of the first interior. Such an arrangement of the cold accumulator and the air ducts, a particularly direct cooling effect can be generated by the air ducts on the second interior. The cold discharged from the cold storage is thus discharged directly and very efficiently to the air flowing past the air ducts.

It is preferably provided that the cold storage is thermally coupled with an evaporator which is connected in the refrigeration cycle. Preferably, it is provided that the evaporator is arranged directly adjacent to the cold storage to each other. It is particularly advantageous if the interior of the surface facing the cold storage is at least half, in particular at least three quarters, preferably completely contacted by the evaporator over the entire surface. A particularly effective cooling, in particular freezing, of the cold storage by the refrigeration cycle, in particular the evaporator, is thereby achievable.

In addition, a condenser and a compressor are also connected in the refrigeration cycle. The first refrigeration cycle can preferably be supplied with electrical energy via the external energy supply network.

In a further advantageous embodiment, it is provided that the cold storage outside the first interior in a third interior, which is not provided for receiving items to be refrigerated, representing NoFrost compartment is arranged. Such NoFrost technology reduces the humidity in an interior designed as a freezer compartment. Thereby, a frosting of the food in this freezer can be at least significantly reduced and a defrost of the freezer compartment is not required. The NoFrost compartment is preferably arranged directly above the first interior and connected by air channels with the first interior. It is preferably provided that in the NoFrost compartment and a fan for air circulation is arranged. This then also allows the air circulation between the first and the second interior via the correspondingly formed air channels.

As a result, a particularly space-saving arrangement of the fan is given, since the volume for not be introduced into the first and the second interior space to be refrigerated and the already required space for the NoFrost compartment easily allows the inclusion of the fan, since it can be introduced anyway no refrigerated goods.

Moreover, it is advantageously provided that the evaporator of the refrigeration cycle is arranged in the NoFrost compartment.

Preferably, it is provided that the control and / or regulating unit is also designed to control the fan, so that in this regard, the air flow rate can be adjusted by the fan accordingly.

In an advantageous embodiment, it is provided that an at least fourth interior space is provided for storing refrigerated goods. Preferably, this fourth interior is a fresh food compartment.

The fourth internal space is preferably arranged in the vertical direction of the domestic refrigerator between the first and the second interior. It is preferably provided that for air circulation and cooling effect in the first, the second and the fourth interior, these spaces are each connected by respective air channels, which in turn are each closed by flaps.

Preferably, it is provided that the fourth interior has an air duct in its ceiling, which also represents the bottom of the first interior. Another air duct is formed in the bottom of the fourth interior, which also represents the ceiling of the second interior. Preferably, these two air ducts are considered in the depth direction of the household refrigerating appliance at the same level. The air flow can thus circulate the two air ducts in a relatively vertical direction.

In addition, it is preferably provided that a further air channel is arranged in a rear wall of the fourth interior, preferably approximately at the central height.

In particular, a rear wall of the fourth inner space is arranged at a distance from a rear wall of an inner container of the household refrigerating appliance, so that an air channel is formed between the rear wall of the inner container and the rear wall of the fourth inner space between the first inner space and the second inner space. Preferably, a flap is arranged in each case at an upper and / or at a lower end of this air channel connecting the first inner space with the second inner space.

The flaps are also controlled by the control and / or regulating unit.

Especially in the embodiments of a household refrigerator with a NoFrost compartment, the cold storage can be frozen with a fan off largely independent of the temperature in the first interior.

In particular, this first interior can be cooled by circulating the indoor air via the fan.

Preferably, the first interior is a freezer compartment and the second interior is a refrigerated compartment. In the refrigerator compartment, in particular, temperatures above the freezing point are set, for example a desired temperature of about 10 ° C. However, this target temperature can also be between 4 ° C and 10 ° C, for example.

In the freezer compartment, on the other hand, set temperatures below freezing and thus below 0 ° C are set.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or in the figures alone can be used not only in the respectively indicated combination but also in other combinations or in isolation, without the scope of To leave invention. 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 of the invention are explained in more detail below with reference to schematic drawings. Show it:

1 a sectional view of a first embodiment of a household refrigerator according to the invention;

2 a sectional view through a second embodiment of a household refrigerator according to the invention;

3 a sectional view through a third embodiment of a household refrigerator according to the invention; and

4 a sectional view through a fourth embodiment of a household refrigerator according to the invention.

In the schematic and with regard to functional principles sketchy figures the same or functionally identical elements are provided with the same reference numerals.

In 1 is a schematic sectional view of a first embodiment of a designed as a storage refrigerator household refrigerator 1 shown. The household refrigerator 1 includes an inner container 2 with a first coolable interior 3a , which in the embodiment represents a freezer, and a second coolable interior 3b , which represents a cooling compartment in the embodiment.

The household refrigerator 1 and in particular the interiors 3a and 3b are through a door 4 closable.

In addition, the household refrigerator includes 1 a cold storage 5 with a storage material 7 which is a PCM material. The cold storage 5 has a container in which the storage material 7 is included.

In addition, the household refrigerator includes 1 a refrigeration cycle for cooling the storage material 7 , The refrigeration cycle includes a condenser 8th , an evaporator 9 and a compressor 10 , The refrigeration cycle is a compressor refrigeration cycle, which is designed in particular as a Kalkdampfkompressionskreislauf and by means of an electric external power supply network not shown with electrical energy can be supplied. This is also an electrical connection with a control and / or regulating unit 17 intended.

In the refrigeration cycle circulates a refrigerant or a fluid.

As from the illustration in 1 can be seen, is the cold storage 5 inside the interior 3a arranged. It is L-shaped in the embodiment and extends on a rear wall 11a that the first interior 3a limited over the entire height (y-direction) of this back wall 11a in the interior 3a , In addition, the cold storage extends 5 in horizontal and thus depth direction (x-direction) of the household refrigerator 1 in certain areas over the entire depth of the interior 3a on a blanket 11b that the first interior 3a bounded from above.

It can also be provided that the cold storage 5 at least partially, in particular completely, integrated in the walls 11a and 11b is arranged.

As in addition, as shown in 1 It can be seen, is the evaporator 9 directly adjacent to the cold storage 5 arranged and thermally contacted in this regard. In the exemplary embodiment it is provided that the interior 3a facing surface of the cold accumulator 5 in cross-section substantially full area through the evaporator 9 is contacted.

In addition, it is envisaged that in one the first interior 3a from the second interior 3b separating partition 6 , which is formed thermally insulating, a first air duct 12 and spaced a second air duct 13 is trained. This creates a fluidic coupling between the interior spaces 3a and 3b to circulate indoor air.

In addition, it is envisaged that the first air duct 12 through a flap 15 is closable. A fan 14 that is about the control unit 17 is operable in the embodiment in the air duct 12 arranged. By the fan 14 an air circulation is generated.

It gets the air from the interior 3b over the canal 12 in the interior 3a promoted, this air then by the existing cold in the first interior 3a is cooled and over the other air duct 13 back in the interior 3b is encouraged.

The air duct 13 is also through a single flap 16 closable. The flaps 15 and 16 can also via the control and / or regulating unit 17 be opened and closed, this depending on demand, in particular measured actual temperatures in the interior 3b he follows.

It can also be provided that at least one of the air ducts 12 respectively. 13 not in the wall 6 is formed, but in the door 4 or in a back wall 2a of the inner container 2 extends.

The wall 6 on the one hand forms the bottom of the first interior 3a , on the other hand, the ceiling of the second interior 3b ,

The evaporator 9 is preferably a plate evaporator.

In particular, it is provided that in mains operation of the household refrigerator 1 and thus in coupled to the external power supply system state of the cold storage 5 over the refrigeration circuit and in particular the evaporator 9 is freezable. In a network independent and thus of the external power supply decoupled state, the cooling of the interiors 3a and 3b via thermal energy output of the frozen cold storage 5 which absorbs heat from the interior and then thaws. This occurs in particular when the refrigeration cycle is deactivated.

In 2 is another embodiment of a household refrigerator according to the invention 1 shown. There is in contrast to the embodiment according to 1 the position and the design of the cold storage 5 and the evaporator 9 differently. The cold storage 5 is formed in this embodiment substantially horizontally and on the floor of the first interior 3a arranged. He is thus in particular on the partition 5 arranged and no longer on the back wall 11a and the ceiling 11b ,

As from the illustration in 2 can be seen, is considered in the depth direction and thus in the x direction of the cold storage 5 only partially over the entire depth of the interior 3a educated. Viewed in the x-direction is thus immediately adjacent and thus next to the cold storage 5 the air duct 12 in the wall 6 and the air duct 13 in the wall 6 educated. With regard to the further embodiment and mode of operation is made to the explanations of the embodiment in 1 directed.

In 3 is another embodiment of a household refrigerator according to the invention 1 shown in a sectional view. Here, the household refrigerator includes 1 in contrast to the previous versions, a third interior 3c Looking in the vertical direction (y-direction) the top chamber of the household refrigerator 1 represents and which immediately above the freezer designed as the first interior 3a is arranged. This third interior 3c is not intended to hold refrigerated goods and is a NoFrost compartment. In this third interior 3c is the cold storage 5 , the evaporator 9 and the fan 14 arranged. About air channels 18 and 19 is the third interior 3c fluidically with the first interior 3a connected. The cooling of the second interior 3b takes place as in the remarks in 1 and 2 by introducing cold air from the first interior 3a in the interior 3b ,

In 4 is a further embodiment of a household refrigerator according to the invention shown in a sectional view. Here is in contrast to the embodiment in 3 provided that a fourth interior 3d is formed, which is analogous to the interiors 3a and 3b is provided for storing refrigerated goods. The fourth interior 3d is considered in the embodiment in the vertical direction between the first interior 3a and the second interior 3b arranged and is in particular a fresh food compartment.

As in 4 can be seen, is a heat-insulating partition 20 between the second interior 3b and the fourth interior 3d trained, so this wall 20 the bottom of the fourth interior 3d and the ceiling of the second interior 3b forms. In addition, it is envisaged that the air duct 12 , the fluidically the first interior 3a with the second interior 3b connects directly, through the top flap 15 and a lower flap 21 is closable. A back wall 26 of the fourth interior 3b is spaced from the rear wall 2a of the inner container 2 arranged so that between the back walls 2a and 26 the air duct 12 is formed.

In this back wall 26 is at about the middle height of this one air duct 22 that by a flap 23 is closed, trained. This allows circulating air through the air duct 12 in the air duct 22 and thus in the fourth interior 3d circulate.

In the wall 20 is an air duct 24 that by a flap 25 is closed, trained. In particular, it is provided that viewed in the x-direction and thus in the depth direction, the air ducts 13 and 24 are at the same level, so here is a circulation of the second interior 3b in the fourth interior 3d and from there to the first interior 3a can be made substantially in a vertical upward direction.

The flaps 15 . 16 . 21 . 23 and 25 be via the control unit 17 controlled. In particular, this is done depending on the temperatures in the interiors 3a . 3b and 3d ,

With regard to the further operation of household refrigerators 1 in the 3 and 4 to the explanatory notes 1 referenced, so that here, for example, a network operation and a network-independent operation can take place. Especially in these modes can then coupled in the state of the power supply state, a charging phase of the cold storage 5 be achieved for thermal energy storage, in particular of cold energy by freezing and in particular in off-grid operation a discharge phase in the delivery of this cold are performed.

LIST OF REFERENCE NUMBERS

1

 Household refrigerator

2

 inner container

3a, b, c, d

 inside rooms

4

 door

5

 cold storage

6

 wall

7

 storage material

8th

 condenser

9

 Evaporator

10

 compressor

11a

 rear wall

11b

 blanket

12

 air duct

14

 fan

15

 flap

17

 Control and / or regulating unit

18, 19

 air ducts

20

 partition wall

21

 flap

22

 air duct

23

 flap

24

 air duct

25

 flap

26

 rear wall

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010041951 A1 [0002]
• DE 102010041952 A1 [0003]

Claims (15)

Household refrigeration appliance ( 1 ) with a first coolable interior ( 3a ) for storing refrigerated goods, with at least one cold storage ( 5 ) with a storage material ( 7 ), as well as a refrigeration cycle for cooling the storage material ( 7 ), characterized in that a second coolable interior ( 3b ) is formed for storing refrigerated goods, with the first interior ( 3b ) by at least one closable air duct ( 12 . 13 . 22 . 24 ), wherein in the first interior ( 3a ) by the storage material ( 7 ) generated cold over the air duct ( 12 . 13 . 22 . 24 ) in the second interior ( 3b ) is conductive. Household refrigeration appliance ( 1 ) according to claim 1, characterized in that at least two air channels ( 12 . 13 . 22 . 24 ) are formed adjacent to or in an air duct ( 12 . 13 . 22 . 24 ) a fan ( 14 ) is arranged. Household refrigeration appliance ( 1 ) according to claim 2, characterized in that both air channels ( 12 . 13 . 22 . 24 ) by flaps ( 15 . 16 . 21 . 23 . 25 ) are closable. Household refrigeration appliance ( 1 ) according to claim 2 or 3, characterized in that a control and / or regulating unit ( 17 ), which depends on the temperatures in the interior spaces ( 3a . 3b . 3d ) the fan ( 14 ) and the flaps ( 15 . 16 . 21 . 23 . 25 ) for introducing the cold air from the colder first ( 3a ) in the warmer second interior ( 3b ) operates. Household refrigeration appliance ( 1 ) according to one of claims 2 to 4, characterized in that at least one air duct ( 12 . 13 . 22 . 24 ) in a floor of the first interior ( 3a ) and the ceiling of the second interior ( 3b ) forming wall ( 6 ) is trained. Domestic refrigerating appliance according to one of claims 2 to 5, characterized in that at least one air duct ( 12 . 13 . 22 . 24 ) in a vertical side wall or a rear wall ( 2a . 11a ) or a door ( 4 ) of the household refrigerating appliance ( 1 ) is trained. Household refrigeration appliance ( 1 ) according to one of the preceding claims, characterized in that the refrigeration cycle is an evaporator ( 9 ), which is used to cool the storage material ( 7 ) is thermally coupled thereto, in particular at the cold storage ( 5 ) is arranged directly on the outside or in cold storage ( 5 ) in the memory material ( 7 ) is arranged. Household refrigeration appliance ( 1 ) according to claim 7, characterized in that the evaporator ( 9 ) is a plate evaporator. Household refrigeration appliance ( 1 ) according to claim 7 or 8, characterized in that the refrigeration cycle can be coupled to an external energy supply network for the supply of electrical energy and in the coupled state of the cold storage ( 5 ) is freezable by the active refrigeration cycle. Household refrigeration appliance ( 1 ) according to any one of claims 7 to 9, characterized in that the refrigeration cycle can be coupled to an external energy supply network for the supply of electrical energy and in the decoupled state, the cooling of at least the first interior ( 3a ) by the, in particular frozen, storage material ( 7 ) stored cold takes place, especially when the refrigeration circuit is deactivated. Household refrigeration appliance ( 1 ) according to one of the preceding claims, characterized in that the cold storage ( 5 ) on a ceiling ( 11b ) and / or a back wall ( 11a ) of the first interior ( 3a ). Household refrigeration appliance ( 1 ) according to one of claims 1 to 10, characterized in that the cold storage ( 5 ) at one of the bottom of the first interior ( 3a ) forming wall ( 6 ) is arranged. Household refrigeration appliance ( 1 ) according to claim 12, characterized in that the cold storage ( 5 ) viewed in the depth direction (x-direction) between the wall forming in the bottom (x) 6 ) formed air ducts ( 12 . 13 ) is arranged. Household refrigeration appliance ( 1 ) according to one of the preceding claims 1 to 10, characterized in that the cold storage ( 5 ) outside the first interior ( 3a ) in a third interior ( 3c ), which is not intended to accommodate refrigerated, representing no-frost compartment is arranged. Household refrigeration appliance ( 1 ) according to claim 14, characterized in that the NoFrost compartment above the first interior ( 3a ) and via air channels ( 18 . 19 ) with the first interior ( 3a ) is thermally coupled.

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