CN118111155A

CN118111155A - Refrigerating appliance

Info

Publication number: CN118111155A
Application number: CN202311594772.8A
Authority: CN
Inventors: R·施塔尔; F·奇弗罗代利; A·保尔杜罗; A·鲁珀特; 张明
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2022-11-30
Filing date: 2023-11-27
Publication date: 2024-05-31
Also published as: DE102022212849A1; EP4379296A1

Abstract

The invention relates to a refrigeration device, in particular a domestic refrigeration device, comprising a compartment for receiving a cooling medium, a machine space that is independent of the compartment, and a refrigerant circuit that is thermally coupled to the compartment and is designed to remove heat from the compartment and to emit heat into the environment, wherein the refrigerant circuit has a liquefier assembly that is arranged in the machine space and has a liquefier for emitting heat into the environment and a blower. The fan is configured as a radial fan with a free-running impeller in order to guide the air through the liquefier and to discharge the air into the machine space.

Description

Refrigerating appliance

Technical Field

The present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, such as a refrigerator, freezer (or freezer), or a combination refrigeration and freezing appliance.

Background

In domestic refrigeration appliances, it is generally desirable to size a storage compartment for receiving a cooling product (e.g. food, beverage, pharmaceutical or the like) as large as possible, as compared to the space of the appliance which cannot be utilized by a customer as a storage space. It is therefore advantageous that the components of the refrigerant circuit can be installed as space-saving as possible. Thus, the refrigerant compressor and the liquefier (or condenser) for condensing the refrigerant compressed by the compressor are typically installed in a machine space that is independent with respect to the storage compartment. In order to be able to construct the liquefier as compactly as possible and at the same time ensure efficient heat dissipation, in this case a fan is usually positioned in the machine space in order to guide the air flow through the liquefier and thus improve the heat dissipation. In order to improve the energy efficiency of the refrigeration appliance as a whole, it is therefore desirable for the fan to deliver a volume flow which is as high as possible, while on the other hand having as little energy consumption as possible.

US2009/0 169 387a1 describes a domestic refrigeration appliance in which a liquefier and an axial fan are arranged in a machine space. The dividing wall divides the machine space into a first area in which the liquefier is positioned and a second area in which the compressor is positioned. The axial flow fan is disposed in the notch of the partition wall.

Another domestic refrigeration appliance is disclosed in US2013/0 067 948a1, which has a compressor and a liquefier arranged in a machine space, wherein a radial fan sucks air through the bottom of the machine space and discharges the air to an air guiding housingThe air guiding shell is provided with an arc-shaped structure, and the arc-shaped structure is provided with a blowing opening facing the compressor.

KR 100198334 B1 also describes a domestic refrigeration appliance having a free-standing axial fan arranged in the machine space for conveying air through the liquefier.

In CH 713 a 2a refrigeration appliance is described in which a liquefier is positioned in a machine space, wherein a radial fan arranged in a fan housing sucks air from the machine space through a deflection channel and discharges the air directly into the surroundings through an opening of the fan housing.

Disclosure of Invention

One of the tasks of the present invention is to provide an improved solution for heat management in a machine space of a refrigeration appliance, in particular such a solution: the solution uses the space proportion in machine space in a space-saving manner and facilitates efficient heat dissipation.

According to the invention, this object is achieved by a refrigeration appliance having the features of claim 1.

According to the invention, a refrigeration appliance, in particular a domestic refrigeration appliance, such as a refrigerator, freezer or a combination refrigerator and freezer, comprises a compartment for receiving a cooling medium, a machine space which is independent from the compartment, and a refrigerant circuit which is thermally coupled to the compartment and is designed to extract heat from the compartment and to emit heat to the environment, wherein the refrigerant circuit has a liquefier assembly which is arranged in the machine space and has a liquefier for emitting heat to the environment, and a blower fan. According to the invention, the fan is configured as a radial fan with a free-running impeller and is arranged in such a way that air is guided through the liquefier and is discharged into the machine space.

The impeller of the fan has a plurality of blades (e.g., backward curved blades) whose blade tips are freely exposed to the machine space. The blower draws air from the surroundings (for example through a suction opening in a wall of the machine space) into the machine space on the suction side and discharges the drawn air into the machine space on the pressure side, from the machine space into the surroundings, for example through a blow-out opening constructed in a wall of the machine space.

On the one hand, the fan has a structurally simple design due to the free-running impeller. In particular, an air guide channel for guiding the air discharged by the blower is not necessary, but the blade tips of the blades of the blower are freely exposed to the machine space. Thereby, a turbulent air flow is generated in the machine space, which is advantageous for transferring heat to the pressure side of the fan, for example for heat dissipation of a refrigerant compressor. Furthermore, free-running impellers allow high transport rates with relatively little energy consumption.

Advantageous configurations and developments result from the dependent claims referring to the independent claims in connection with the description.

According to some embodiments, it may be provided that the liquefier is arranged on the suction side of the fan, so that air can be sucked through the liquefier by means of the fan and can be discharged into the machine space. Thus, the air drawn by the blower is directed through the liquefier where it absorbs heat from the liquefier. The fan therefore discharges hot air on the pressure side and generates a turbulent hot air flow due to the impeller that runs freely on the pressure side. This can be used advantageously for heating purposes, for example for evaporating condensed water in the machine space.

According to some embodiments, an evaporation pan can be arranged in the machine space on the pressure side of the fan for receiving condensed water from the storage compartment. The turbulent flow created by the fans advantageously increases the evaporation rate of the condensate located in the evaporation pan. This effect is further enhanced when the liquefier is arranged on the suction side of the fan.

According to some embodiments, it may be provided that the liquefier assembly divides the machine space into a first sub-volume and a second sub-volume, wherein the machine space has a suction opening connecting the first sub-volume with the surroundings and a blow-out opening connecting the second sub-volume with the surroundings, wherein the suction side of the blower is connected with the first sub-volume and the pressure side of the blower is connected with the second sub-volume in order to suck air into the first sub-volume through the suction opening and to discharge air into the second sub-volume, such that the second sub-volume constitutes a pressure space from which air can be discharged into the surroundings via the blow-out opening. Thus, the liquefier assembly (e.g., the liquefier itself) constitutes a physical separation between the first sub-volume and the second sub-volume. Thus, the liquefier assembly fully uses the entire available installation space in one direction (e.g. in the depth direction), which means that space is efficiently utilized. Furthermore, a sub-volume is thereby defined which constitutes the pressure space, i.e. the space: during operation of the fan, there is a higher pressure in the space than the sub-volume connected to the suction side of the fan, and turbulent air flow flows in the space. The blow-out opening can thereby be positioned more flexibly, wherein a uniform drainage through the blow-out opening and taking account of the pressure losses occurring there can advantageously be achieved.

According to certain embodiments, it can be provided that the machine space is delimited with respect to the vertical direction by a bottom and a top, with respect to the transverse direction by mutually opposite side walls extending between the bottom and the top, and with respect to the depth direction by an inner wall and a rear wall, wherein the blow-out opening is configured in the rear wall, for example as an elongated opening extending in the transverse direction. The provision of the blow-out opening on the rear wall of the machine space provides the advantage that: not only for embedded appliances positioned in the embedded alcove, but also for free standing appliances (FREISTEHENDEN) A gap is usually present between the rear wall and the border of the niche, through which air can flow out.

According to certain embodiments, it may be provided that the blow-out opening is configured in the top-facing end region of the rear wall with respect to the vertical direction. This facilitates air blowing out in the vertical direction and thus generally in a direction opposite to the direction of gravity. Since the hot air is blown out through the blow-out opening, the blown-out air flows out in the vertical direction due to natural convection in this case.

According to some embodiments, it may be provided that the liquefier assembly divides the machine space such that the first sub-volume and the second sub-volume are arranged side by side with respect to the transverse direction. For example, the liquefier may extend in the depth direction between the inner wall and the rear wall and in relation to the vertical direction between the bottom and the top.

According to some embodiments, it may be provided that the suction opening is configured in the rear wall spaced apart from the blow-out opening in the transverse direction. When the first sub-volume and the second sub-volume are arranged side by side with respect to the transverse direction (as explained above), a space-saving arrangement of the suction opening and the blow-out opening can thus advantageously be achieved. In particular in the case of embedded appliances, the gap that exists between the rear wall and the boundary of the embedded niche can be used advantageously for supplying air into the machine space and for discharging air from the machine space.

According to certain embodiments, it may be provided that the suction opening is configured in the rear wall at a distance from the blow-out opening in the vertical direction, and that a seal is mounted on the outer surface of the rear wall, said seal extending in the transverse direction and being arranged between the suction opening and the blow-out opening with respect to the vertical direction. The seal may in particular be configured as a band-shaped seal. Optionally, the seal additionally extends in the depth direction on the outer surface of the side wall of the machine space. The seal may be constructed, for example, from an elastomeric material (e.g., foam or rubber). The seal constitutes a physical separation between the suction opening and the blow-out opening and thus prevents a flow short. In particular in the case of an in-line appliance, the seal can rest against the boundary of the in-line recess, so that air is sucked from below into the suction opening and is discharged upwards through the blowing opening, wherein the seal seals the suction opening and the blowing opening from each other in a fluid-tight manner.

According to some embodiments, a fan may be positioned in the second sub-volume. As already explained, the free-running impeller of the fan is not provided with a wind guiding housing, so the arrangement in the second sub-volume brings about the advantage that: the air does not have to be guided further in the machine space.

According to certain embodiments, a liquefier assembly may be provided having a housing with a first opening in which the liquefier is disposed and a second opening that is connected to a suction interface (Sauganschluss) of the blower. For example, a fan wheel may be arranged on the second opening. The housing forms a flow channel in which the liquefier is located and through which the fan draws air. Thereby, the air flow actually guided through the liquefier is advantageously increased.

According to some embodiments, it may be provided that the housing has a frame defining the first opening and optionally being rectangular or substantially rectangular, and a funnel section extending from the frame and defining the second opening on that end remote from the frame.

According to some embodiments, it may be provided that the liquefier assembly has a carrier which is fastened to the housing and on which the blower is supported. The carrier may be (e.g. releasably) fastened to the housing. Thereby facilitating the installation of the blower.

According to certain embodiments, it may be provided that the carrier has a base section which is arranged opposite the second opening of the housing and on which the fan is supported, and at least one connecting support (Verbindungsstrebe) which extends transversely to the base section and is fastened to the frame of the housing.

According to some embodiments, the housing may have a seal which extends along the outer circumference of the housing and bears against at least two opposing walls delimiting the machine space, in order to seal the first side defined by the first opening of the housing in an airtight manner with respect to the side defined by the second opening of the housing. When the liquefier assembly divides the machine space into a first sub-volume and a second sub-volume with respect to the transverse direction, for example (as explained above), the seals may for example rest at least on the top and bottom of the machine space, alternatively also on the rear wall and/or the inner wall. Thereby, a flow short between the pressure side and the suction side is advantageously prevented.

Drawings

The present invention is explained below with reference to the drawings. The drawings show:

FIG. 1 shows a simplified schematic cross-sectional view of a refrigeration appliance according to one embodiment of the invention;

FIG. 2 illustrates a partial view of a rear side of a refrigeration appliance according to one embodiment of the present invention;

fig. 3 shows a perspective view of a machine space of a refrigeration appliance according to an embodiment of the invention, wherein the rear wall of the machine space is shown transparently; and

Fig. 4 shows a view of the machine space from fig. 3 in a line of sight direction opposite to the depth direction;

FIG. 5 shows a perspective view of a liquefier assembly of a refrigeration appliance according to one embodiment of the invention; and

Fig. 6 shows a cross-sectional view of the liquefier assembly, which is produced in a cross-section along the line A-A drawn in fig. 4.

In the drawings, like reference numerals refer to like or functionally identical components unless otherwise specified.

Detailed Description

Fig. 1 shows an exemplary refrigeration appliance 100 in the form of a refrigerator. However, the present invention is not limited thereto. In general, the refrigeration appliance 100 may be a household refrigeration appliance, such as a refrigerator, freezer (or freezer), or a combination refrigeration and freezing appliance. As also shown purely by way of example in fig. 1, refrigeration appliance 100 may be an in-line refrigeration appliance positioned in-line niche N.

As shown in fig. 1, a refrigeration device 100 has a compartment 1, a machine space 2 and a refrigerant circuit 3.

The compartment 1 is used for receiving a cooling product (e.g. food, beverage, pharmaceutical or the like), and the compartment 1 is delimited by a bottom wall 10, a top wall 11 opposite the bottom wall 10 in a vertical direction V2, side walls 12 opposite each other in a transverse direction C2, and a rear wall 13 with respect to a depth direction T2, said side walls 12 extending between the bottom wall 10 and the top wall 11. As schematically shown in fig. 1, the embedded alcove N may be defined by a rear wall W, side walls S and a bottom B. In the case of an exemplary positioning of the refrigeration appliance 100 in the recessed niche N, the rear wall 13 of the refrigeration appliance 100 can face the rear wall W of the recessed niche N, wherein a gap G is left between the rear wall 13 of the refrigeration appliance 100 and the rear wall W of the recessed niche N.

The machine space 2 constitutes a space independent from the storage compartment 1. As schematically shown in fig. 1, the machine space 2 is delimited with respect to the vertical direction V2 by a bottom 20 and a top 21, with respect to the transverse direction C2 by mutually opposite side walls 22, 23 (fig. 2 to 4) extending between the bottom 20 and the top 21, and with respect to the depth direction T2 by an inner wall 24 and a rear wall 25. As purely exemplary shown in fig. 1, the bottom wall 10 of the compartment 1 may optionally form an inner wall 24 and a top 21 of the machine space 2 and thereby spatially separate the machine space 2 and the compartment 1 from one another.

The machine space 2 is connected to the surroundings via a suction opening 26 and a blow-out opening 28, which suction opening 26 and blow-out opening 28 can be embodied, for example, in the rear wall 25, as schematically shown in fig. 1.

As shown in detail in fig. 2, the blow-out opening 28 may be configured, for example, as an elongated opening extending in the transverse direction C2. Independently of this, the blow-out opening 28 can optionally be configured in relation to the vertical direction V2 in that end region of the rear wall 25 which faces the roof 21, as is likewise shown in fig. 2.

The suction opening 26 can be embodied, for example, in the edge region of the rear wall 25 of the machine space 2 with respect to the transverse direction C2, as is shown by way of example in fig. 2. For example, the suction opening 26 may be configured as a rectangular or substantially rectangular opening, which optionally extends over at least 50% of the extension (Erstreckung) of the rear wall 25 in the vertical direction V2. As shown in fig. 2, the suction opening 26 and the blow-out opening 28 may be arranged spaced apart from each other with respect to the transverse direction C2. Alternatively or additionally, the suction opening 26 and the blow-out opening 28 may be configured spaced apart from each other with respect to the vertical direction V2, as this is likewise shown in fig. 2.

As can also be seen in fig. 1 and 2, optionally, a seal 5 can be mounted on the outer surface 25a of the rear wall 25, which is oriented away from the machine space 2. The seal 5 may be constructed of an elastic material, such as a foam material or a rubber material. Optionally, the seal 5 additionally extends in the depth direction T2 along the side walls 22, 23 of the machine space 2 and the side wall 12 of the storage compartment 1, as is shown by way of example in fig. 2. As shown in fig. 1 and 2, the seal 5 may be arranged between the suction opening 26 and the blow-out opening 28 with respect to the vertical direction V2. When the refrigeration appliance 100 is positioned in the recessed alcove N, the seal 5 bears against the rear wall W and optionally against the side wall S, as is schematically shown in fig. 1. Thereby, sealing of the blow-out opening 28 and the suction opening 26 with respect to each other is achieved.

As shown purely schematically in fig. 1, the refrigerant circuit 3 has a liquefier assembly 30, an evaporator 33, a compressor 34 and a throttle (not shown), for example in the form of a capillary tube. Liquefier assembly 30 is shown only schematically as a block in fig. 1 and includes liquefier 31 and blower 32 (fig. 5). The evaporator 33 is thermally coupled to the compartment 1 and is configured to draw heat from the compartment 1 by evaporating the refrigerant. The output of the evaporator 33 is connected to a suction connection of a compressor 34, which compressor 34 is designed to compress a gaseous refrigerant. The input of the liquefier 31 is connected to the pressure connection of the compressor 34, wherein the refrigerant condenses in the liquefier 31 by releasing heat. As will be explained in further detail later, the blower 32 sucks air from the surroundings into the machine space 2 through the suction opening 26, guides the air through the liquefier 32 and discharges the air into the machine space 2, from which machine space 2 the air reaches the surroundings through the blow-out opening 28. The output of the liquefier 31 is connected to the input of the evaporator 33 via a throttle. The refrigerant circuit 3 is therefore thermally coupled to the storage compartment 1 and is configured to extract heat from the storage compartment 1 and to release the heat to the surroundings.

As schematically shown in fig. 1 and in detail in fig. 3 and 4, liquefier assembly 30 and compressor 34 are disposed (or received) in machine space 2.

Fig. 5 illustrates a liquefier assembly 30, the liquefier assembly 30 having a liquefier 31 and a blower 32, and an optional housing 300. As exemplarily shown in fig. 5, the liquefier 31 may be, for example, a compact liquefier, in particular in the form of a MCHE liquefier, where "MCHE" stands for the abbreviation of the english expression "Micro CHANNEL HEAT Exchanger", i.e. a microchannel heat Exchanger. As shown in fig. 5, the liquefier 31 may have a plurality of parallel plate members 31A in which a plurality of passages (not shown) for guiding the refrigerant are respectively configured, and the liquefier 31 may have a plurality of fins 31B disposed between the plate members 31A and in heat conductive contact with the plate members 31A. The plates 31A and the fins 31B collectively define a convective pathway through which air may flow through the liquefier 31. As exemplarily shown in fig. 2, the compact liquefier 31 may have, for example, a substantially rectangular shape.

The fan 32 is configured as a radial fan with a free-running impeller 320. The impeller 320 is rotatable about the axis of rotation a32, which may be realized, for example, by means of an electric motor (not shown), and the fan 32 has a plurality of blades 321, which blades 321 extend in a radial direction with respect to the axis of rotation a 32. As schematically shown in fig. 6, the blades 321 may be curved backward. Here, with reference to the rotation direction DR of the impeller 320, accordingly, the outlet angle at the blade tip 322 is less than 90 degrees. Because the impeller 320 is free-running, i.e. the blade tips 322 of the blades 321 are not surrounded by the wind guiding housing with respect to the radial direction, the air is discharged freely (or directly) into the machine space 2 on the pressure side of the fan 32. The conveyed air flow has a velocity component in the circumferential direction on the pressure side of the fan 32 that is relatively high compared to the radial component of the flow velocity. A turbulent flow can thus be generated in the machine space 2 on the pressure side of the fan in a simple manner, as is schematically illustrated by arrow P1 in fig. 4 and 6.

As is also shown in fig. 5, the axis of rotation a32 of the fan 32 may extend transversely to the liquefier 31. Alternatively, the liquefier 31 is arranged on the suction side of the fan 32, as this is also schematically shown in fig. 5.

The optional housing 300 may generally comprise a first opening 301 and a second opening 302, wherein a liquefier 31 is arranged in the first opening 301, and the second opening 302 is connected with a suction interface of a fan 32. As shown in fig. 5, the blower 32 can be positioned, for example, at the second opening 302, in particular such that the axis of rotation a32 is coaxial with the central axis of the second opening 302. As exemplarily shown in fig. 5, the housing 300 may have a frame 303 and a funnel section 304, the frame 303 defining a first opening 301, the funnel section 304 extending from the frame 303 and defining a second opening 302 on that end remote from the frame 303. As exemplarily shown in fig. 5, the frame 303 may be, for example, rectangular, such that the frame 303 encloses the rectangular liquefier 31.

As also schematically illustrated in fig. 5, liquefier assembly 30 may have a carrier 310, with blower 32 supported on carrier 310 or with carrier 310 carrying blower 32. The carrier 310 may in particular have a base section 311 and at least one connection support 312. The base section 311 may have a planar extension and be configured, for example (as shown in fig. 5) as a plate. The fan 32 is supported on the base section 311. Purely by way of example, the carrier 310 shown in fig. 5 has two connection supports 312, which are mounted on opposite ends of the base section 311 and each extend transversely to the base section 310.

As shown in fig. 5, the carrier 310 is fastened to the housing 300, for example, releasably fastened to the housing 300. In particular, the connection support 312 may be connected with the housing 300 (e.g., with the frame 303). As exemplarily shown in fig. 5, the frame 303 may have a groove 306 on an outer surface, into which groove 306 an end region 313 of the connection support 312 is embedded. The base section 311 is arranged opposite the second opening 302 of the housing 300.

As explained above, the liquefier assembly 30 is received in the machine space 2. When the liquefier 31 (as explained above) is arranged on the suction side of the fan 32, air is sucked into the machine space 2 through the suction opening 26 by means of the fan 32, guided through the liquefier 31 and discharged directly into the machine space 2 on the pressure side of the fan 32. Alternatively, it may be provided that the liquefier assembly 30 divides the machine space 2 (e.g. with respect to the transverse direction C1) into a first sub-volume 2A and a second sub-volume 2B, as shown in fig. 3 and 4. Here, the liquefier 31 (or the frame 303 of the housing 300) extends in the depth direction T1 between the inner wall 24 and the rear wall 25 of the machine space 2 and, with respect to the vertical direction V2, between the bottom 20 and the top 21 of the machine space 2. Optionally, seals 305 may be provided on the outer periphery of the housing 300, for example between the top 21 and the frame 303 and between the bottom 20 and the frame 303, wherein the seals 305 rest on the frame 303 and on the top 21 (or the bottom 20), respectively.

The suction opening 26 connects the first sub-volume 2A with the surroundings, said first sub-volume 2A being delimited in the example of fig. 3 and 4 by the first side wall 22, the bottom 20, the liquefier assembly 30 and the top 21, and by the rear wall 25, in particular by its rear wall section (fig. 2) above the optional seal 5, and the inner wall 24. The blow-out opening 28 connects the second sub-volume 2B with the surroundings, the extent of said second sub-volume 2B being delimited in the example of fig. 3 and 4 by the second side wall 22, the bottom 20, the liquefier assembly 30 and the top 21 and by the rear wall 25 and the inner wall 24.

As shown in fig. 3 and 4, a blower 32 may be arranged in the second sub-volume 2B. The suction side of the blower 32 is connected to the first sub-volume 2A via the housing 300 (or its first 301 and second 302 openings). The pressure side of the fan 32 is located in the second sub-volume 2B. As shown in fig. 3 and 4, the compressor 34 of the refrigerant circuit 3 can likewise be positioned in the second sub-volume 2B. This thereby improves the heat dissipation of the compressor 34, since the air from the fan 32 (as schematically shown in fig. 4) flows turbulently (or rotationally) in the machine space 2 and thus enables an efficient heat transfer for cooling the compressor 34. Alternatively or additionally thereto, an evaporation pan 4 can likewise be arranged in the second sub-volume 2B, which evaporation pan 4 is mounted on the compressor 34 in the example of fig. 3 and 4 and is used to receive condensed water from the storage compartment 1. In general, the evaporation pan 4 is preferably arranged on the pressure side of the fan 32.

Thus, the blower 32 draws air into the first sub-volume 2A through the intake opening 26. Air flows from the first sub-volume 2A through (or passes through) the liquefier 31, where it absorbs heat and reaches the impeller 320 of the fan 32 via the openings 301, 302 of the housing 300. The rotating impeller 320 delivers air outwards in the radial direction by means of the blades 321, whereby the air is discharged directly from the blade tips 322 into the second sub-volume 2B. The second sub-volume 2B constitutes a pressure space in which a turbulent (or rotating) flow of hot air is present. This flow promotes a high evaporation rate in the optional evaporation tray 4. Air flows out of the second sub-volume 2B through the blow-out opening 28 into the surroundings.

In the installed situation of the refrigeration appliance 100, which is illustrated by way of example in fig. 1, the air flows upward along the rear wall 13 in the vertical direction V2, as this is symbolically illustrated in fig. 1 and in a similar manner in fig. 2 and 4 by the arrow P2. The hot air advantageously prevents condensate from forming on the rear wall 13 of the refrigeration appliance 100. Since the air is discharged without guidance by the fan 32 directly into the machine space 2, flows a distance in the machine space 2 and then reaches the blow-out opening 28, a relatively even distribution of the flow velocity with respect to the transverse direction C2 is advantageously achieved. This advantageously reduces the flow pressure loss and furthermore promotes a uniform heat distribution on the rear wall 13. However, these advantages are achieved not only in the in-line situation shown in fig. 1 of the refrigeration appliance 100 implemented as an in-line appliance, but also, for example, when the free-standing refrigeration appliance 100 is positioned with its rear wall 13 close to the wall.

Although the present invention has been exemplarily explained above according to the embodiments, the present invention is not limited thereto, but can be modified in various ways. In particular, combinations of the above embodiments are also conceivable.

List of reference numerals

1. Storage grid

2. Machine space

2A first sub-volume

2B second sub-volume

3. Refrigerant circuit

4. Evaporation disk

5. Sealing element

10. Bottom wall of storage compartment

11. Top wall of storage compartment

12. Side wall of storage case

13. Rear wall of storage compartment

20. Bottom of machine space

21. Roof of machine space

22. First side wall of machine space

23. Second side wall of machine space

24. Inner wall of machine space

25. Rear wall of machine space

25A outer surface of the rear wall

26. Suction opening

28. Blow-out opening

30. Liquefier assembly

31. Liquefying device

31A plate

31B fin

32. Blower fan

33. Evaporator

34. Compressor with a compressor body having a rotor with a rotor shaft

100. Refrigerating appliance

300. Shell body

301. First opening of the housing

302. Second opening of the housing

303. Frame

304. Funnel-shaped section

305. Sealing element

306. Groove

310. Bearing piece

311. Base section

312. Connecting support piece

313. End region of connecting support

320. Impeller of fan

321. Blade

322. Blade tip

B bottom of embedded alcove

C2 Transverse direction

DR direction of rotation

G gap

N embedded alcove

Arrows P1, P2

Side wall of S embedded alcove

T2 depth direction

V2 vertical direction

W embedded niche rear wall

Claims

1. A refrigeration appliance (100), in particular a domestic refrigeration appliance, having:

A compartment (1) for receiving cooling objects;

-a machine space (2) independent from the storage compartment (1); and

A refrigerant circuit (3) thermally coupled to the storage compartment (1), which is designed to extract heat from the storage compartment (1) and to emit said heat to the surroundings, wherein the refrigerant circuit (3) has a liquefier assembly (30) arranged in the machine space (2) and having a liquefier (31) for emitting heat to the surroundings and having a fan (32),

It is characterized in that the method comprises the steps of,

The fan (32) is configured as a radial fan with a free-running impeller (320) arranged to guide air through the liquefier (31) and to discharge the air into the machine space (2).

2. The refrigeration appliance (100) of claim 1,

Wherein the liquefier (31) is arranged on the suction side of the fan (32) such that air can be sucked through the liquefier (31) by means of the fan (32) and can be discharged into the machine space (2).

3. The refrigeration appliance (100) according to claim 1 or 2,

Wherein in the machine space (2) an evaporation pan (4) for receiving condensed water from the storage compartment (1) is arranged on the pressure side of the fan (32).

4. The refrigeration appliance (100) according to any of the preceding claims,

Wherein the liquefier assembly (100) divides the machine space (2) into a first sub-volume (2A) and a second sub-volume (2B),

Wherein the machine space (2) has a suction opening (26) connecting the first sub-volume (2A) with the surroundings and a blow-out opening (28) connecting the second sub-volume (2B) with the surroundings,

Wherein the suction side of the blower (32) is connected to the first sub-volume (2A) and the pressure side of the blower (32) is connected to the second sub-volume (2B) in order to suck air into the first sub-volume (2A) and to discharge air into the second sub-volume (2B) through the suction opening (26), so that the second sub-volume (2B) forms a pressure space from which air can be conducted out into the surroundings via the blow-out opening (28).

5. The refrigeration appliance (100) of claim 4,

Wherein the machine space (2) is delimited with respect to a vertical direction (V2) by a bottom (20) and a top (21), with respect to a transverse direction (C2) by mutually opposite side walls (22, 23) extending between the bottom (20) and the top (21), and with respect to a depth direction (T2) by an inner wall (24) and a rear wall (25), wherein the blow-out opening (28) is configured in the rear wall (25).

6. The refrigeration appliance (100) of claim 5,

Wherein the blow-out opening (28) is configured in an end region of the rear wall (25) facing the roof (21) with respect to a vertical direction (V2).

7. The refrigeration appliance (100) according to claim 5 or 6,

Wherein the liquefier assembly (100) divides the machine space (2) such that the first sub-volume (2A) and the second sub-volume (2B) are arranged side by side with respect to a transverse direction (C2).

8. The refrigeration appliance (100) of claim 7,

Wherein the suction opening (26) is formed in the rear wall (25) at a distance from the blow-out opening (28) in the transverse direction (C2).

9. The refrigeration appliance (100) according to any one of claims 4 to 8,

Wherein the suction opening (26) is formed in the rear wall (25) at a distance from the blow-out opening (28) in the vertical direction (V2), and

Wherein a seal (5) is mounted on an outer surface (25 a) of the rear wall (25), said seal extending in a transverse direction (C2) and being arranged between the suction opening (26) and the blow-out opening (28) with respect to a vertical direction (V2).

10. The refrigeration appliance (100) according to any one of claims 4 to 9,

Wherein the fan (32) is positioned in the second sub-volume (2A).

11. The refrigeration appliance (100) according to any of the preceding claims,

Wherein the liquefier assembly (30) has a housing (300) with a first opening (301) in which the liquefier (31) is arranged and a second opening (302) which is connected to a suction interface of the fan (32).

12. The refrigeration appliance (100) of claim 11,

Wherein the housing (300) has a frame (303) defining the first opening (301) and a funnel-shaped section (304) extending from the frame (303) and defining the second opening (302) at an end remote from the frame (303), the frame preferably being rectangular.

13. The refrigeration appliance (100) according to claim 11 or 12,

Wherein the liquefier assembly (30) has a carrier (310) which is fastened to the housing (300) and on which the fan (32) is supported.

14. The refrigeration appliance (100) of claim 13,

Wherein the carrier (310) has a base section (311) which is arranged opposite the second opening (302) of the housing (300) and on which the fan (32) is supported, and at least one connecting support (312) which extends transversely to the base section (311) and is fastened to the frame (303) of the housing (303).

15. The refrigeration appliance (100) according to any one of claims 11 to 14,

Wherein the housing (300) has a seal (305) which extends along the outer circumference of the housing (300) and bears against at least two mutually opposite walls (20, 21) delimiting the machine space (2) in order to seal a first side defined by a first opening (301) of the housing (300) in a gastight manner with respect to a side defined by a second opening (302) of the housing (300).