DE102009002801A1 - Refrigerating appliance, in particular household refrigerating appliance with a condensate drainage channel - Google Patents

Abstract

The invention relates to a refrigeration appliance, in particular domestic refrigeration appliance, with a body, which forms an inner container with a cold room and a freezer compartment, and a single-circuit refrigeration cycle, comprising a first evaporator associated with the freezer compartment and a second evaporator associated with the cold room, hidden behind a rear wall of the cold room wherein the rear wall of the inner container has a condensation gutter, wherein the condensation gutter is arranged on the inside of the rear wall at a level immediately below the second evaporator.

Description

The The invention relates to a refrigeration device, in particular Household refrigerator, with a corpus, one Inner container with a fridge and freezer forms, as well as a single-circuit refrigeration cycle, comprising a freezer compartment associated with the first evaporator and a Refrigerator associated, behind a rear wall of the Refrigerator concealed arranged second evaporator, wherein the Rear wall of the inner container a condensation gutter having.

From the DE 199 07 124 A1 is a refrigerator with a lying outside the refrigerator evaporator and an internal condensation water gutter known. An inner lining serves for lining the cooling space, which is cooled by means of the evaporator arranged on its rear wall. The bottom of the cold room is provided below the evaporator with a condensate collecting gutter, which is arranged for collecting the melting water produced during a defrosting process of the evaporator substantially over the width of the cooling space. The condensate collecting gutter has a gutter bed with a projecting approximately in the middle of its width section. The gutter bed is formed from a gutter wall and a gutter bottom, at the free edges of the gutter wall is arranged circumferentially. The channel bottom has a slope, which tapers on an introduced therein, arranged within the projecting portion drainage opening. The drain opening opens into a condensate drain pipe.

task The invention is a refrigeration device, in particular Domestic refrigeration appliance, with a single-circuit refrigeration cycle to create, in which a separate from the freezer compartment refrigerator used more expediently for a user can be.

The The object is achieved by a refrigerator, in particular domestic refrigeration appliance, with a corpus holding an inner tank with a refrigerator and a freezer compartment, and a single-circuit refrigeration cycle, comprising a first evaporator associated with the freezer compartment and one associated with the refrigerator, behind a rear wall the second refrigerating chamber hidden arranged second evaporator, wherein the rear wall of the inner container is a condensation gutter has, with the condensation gutter on the inside of the rear wall arranged at a height immediately below the second evaporator is.

at Refrigerators with internal evaporators is It is known, a condensation gutter immediately below the evaporator plate to arrange. Here, a trained as a separate component defrost channel attached directly to the evaporator plate or on the inside attached to the rear wall of the refrigerator. by virtue of the visible and projecting into the refrigerator mounting The evaporator plate is the usable storage space for refrigerated goods restricted by the evaporator plate from the beginning. In that regard, it is harmless in internal evaporators, also the condensation gutter immediately below the evaporator plate to arrange, as needed for the condensation gutter Installation space anyway for the refrigerated goods is not available.

Different behaves with cooling units with concealed arranged evaporator. Located on concealed evaporators the evaporator tube or the evaporator plate outside the Refrigerator mostly between the back wall and the Foam insulation, d. H. the evaporator is in contact with the outwardly oriented side of the rear wall. The inside the refrigerator room facing side of the rear wall is smooth-walled, usually formed without any protrusions. This is considered advantageous since there are no internal internals protrude into the refrigerator and the storage of refrigerated goods available useful volume thus not reduced becomes. In that regard, so far was the smooth wall of the back wall for refrigerators with concealed evaporator given preference. The necessary defrost channel was always on the ground provided the inner container. On the one hand, over the back wall the entire height of the refrigerator free of protruding To keep parts and on the other hand, to that of the defrost channel Trapped condensate on the shortest route without consuming Discharge pipes to the compressor, where the collected condensation outside the refrigerator was evaporated again. In that regard, it has been disadvantageous so far considered to put the defrost channel upwards.

It has now been recognized that atmospheric moisture, which, for example, penetrates into the cooling space during an open-standing of the refrigeration appliance door, is reflected only on that surface of the inside of the rear wall, behind which the evaporator is located and this water condensed only on this surface due to gravity until runs down to the bottom of the refrigerator and so far also wetted the area located below the evaporator surface of the rear wall, which would actually remain dry because there precipitates no humidity or condenses there. However, since in the previous embodiments with a bottom-side condensation gutter the rear wall over its entire height is wetted with down-running condensation, the shelves had to be placed with a certain distance from the rear wall to reliably prevent contact of refrigerated goods with the rear wall can. In other words an unnecessarily large piece of the back wall was wetted with draining condensation water, as this would be technically necessary. For this reason, the evaporator drainage was distributed in the cold room to a much larger area than was actually required. However, this has reduced the useful volume of the cold room.

By pushing up the water drain can turn this area up be significantly reduced according to the invention. According to the invention was now recognized that an increase in height of the bottom-side condensation gutter, preferably up to a height of the lower edge of the hidden Although evaporator at the height of the newly arranged condensation gutter the usable depth is slightly reduced, but by achieving a dry back wall below the drainage channel or more useful volume is created below the evaporator. This Among other things, it is due to the fact that refrigerated goods are now lying close can be stowed on the back wall without causing any danger would be that the refrigerated goods is wet or on the back wall freezes. In the below the invention Dewatering tray located shelves can therefore a Bar on these shelves omitted. Advantageous it is in particular that condensation water is the refrigeration appliance can leave faster because the condensation gutter immediately below the evaporator is arranged. Another advantage arises from a changeability of the temperature stratification.

A Upper edge of the condensation gutter can be found on the inside of the back wall be arranged at a height in which a lower edge of the second evaporator hidden behind the back wall located. In particular with refrigerated freezing combination devices the evaporator of the cold room in the area is clear smaller than the back wall of the refrigerator. This is especially in fridge freezing combination devices with a single-circuit cooling circuit of the case. Only on the one Inner surface of the rear wall, which covered by the ver Evaporator is cooled, condensation occurs. To parts the back wall, which is not cooled by the evaporator be, no condensation occurs. Without higher Dew channel becomes this uncooled part of the back wall but damp, by the running down of dew drops, the are condensed in the evaporator. By the invention higher set dew channel become the dew drops directly collected below the evaporator, so they do not hit the can reach the uncooled part of the rear wall. The dew drops are collected as before the uncooled Part of the back wall can moisten. This uncooled Part of the back wall therefore remains dry. Because this uncooled Part of the back wall is dry, refrigerated goods can be up to a contact with the rear wall in the refrigerator be stored. This is the usable volume of the refrigerator increased. The defrost channel is preferably so located where at the inside to the fridge facing side of the back wall a chilled section the rear wall to an uncooled section of the Back wall is adjacent. This limit does not have to be mandatory exactly at the level of the lower edge of the evaporator. Depending on the heat distribution or cold distribution in the back wall can be the cooled section on which Humidity can condense slightly from the Height of the lower edge of the evaporator upwards or downwards deviate below.

Of the however, the second evaporator may be in an upper third, for example of the cold room behind the inside of the back wall be arranged, with the condensation gutter at height two Third of the total height of the refrigerator on the inside the rear wall is attached. In particular with refrigerated freezing combination devices with a single-circuit refrigeration cycle, the evaporator for the refrigerator designed to be much smaller than single refrigerators without Freezer or as in Kühlgefrierkombinationsgeräten with separate cooling circuits for refrigerator and Freezer. This is the case with refrigerated freezing combination devices with a single-circuit refrigeration cycle the circumstance that one very large area of the back wall uncooled is. An inventive "put-up" the Dewatering channel is therefore in refrigerated freezing combination devices Particularly advantageous with a single-circuit refrigeration cycle or effective.

The Dewatering channel can be made in one piece with the rear wall Inner container be formed. The defrost channel can constructive as a molding in the rear wall of the inner container of the Refrigeration device be formed. This has the advantage that no installation of the condensation gutter is required and the number of parts is reduced, which is why the refrigerator is inexpensive can be produced. But to elaborate molds To avoid, the condensation gutter could be considered as separate Component, eg. As a plastic injection molded part, on the rear wall be attached.

The Dewatering channel may have an outlet connection to which a drain hose, for draining condensation water from the dew water channel to an evaporating dish connected to a compressor of the refrigerator is. The condensation water collected by the dew trough will continue an evaporation tray on a compressor of the refrigerator fed. This supply takes place via the drain hose. Usually the compressor is located below the bottom of the refrigerator outside the inner container of the refrigerator. The drain hose can be on the inside of the back panel in the middle or in one Corner led from the bottom of the condensation gutter down be.

Of the Drain hose can also directly or just below the Dew water channel led out through the rear wall to the rear be and, for example, in the insulating foam outside the refrigerator be guided down to the compressor. This has the advantage that in the cold room no space for the drain hose is wasted.

Of the Drain hose can thus be hidden behind the back wall running outside the refrigerator to one below the inner container arranged compressor out be.

In all embodiments of the invention can in Refrigerator at least one upper shelf above the drainage channel and at least one lower shelf disposed below the condensation gutter be, with the at least one lower shelf to the rear wall contacting bearings of refrigerated goods without boundary strip is trained. As the condensing above the condensation gutter Condensation water is collected at the level of the dew water channel, the back wall below the drainage channel remains dry. So refrigerated goods can be located on the below the de-watering channel Shelves up to a back wall touching Extent be stored. In this case, there are no facilities necessary, which keep the refrigerated goods from the rear wall. A border bar or other stop can therefore omitted according to the invention.

shelves and in particular glass plates before the evaporator or before the Drainage area of the condensate, must be at the rear, d. H. on its rear wall facing side, a boundary or have a stop so that a user does not accidentally Refrigerated goods with the rear wall in contact brings. If this would happen, there is a danger that the refrigerated goods are moistened with the condensation water or even freezes on the cold back wall. Will the defrost channel moved upward according to the invention, the back wall below the condensation gutter not wet and not cold. In the result there is no risk of moisture penetration for a user or freezing. For this reason, the rear stop or the boundary strip on the shelves omitted. This has the advantage that the shelves are cheaper can be produced. Another advantage is that by eliminating the rear stop or the boundary strip itself the footprint on the shelf increases what means increased customer benefit.

It So there is a cost advantage, since material and assembly costs to be omitted for the rear stop or the limit strip, because these rear strips on several shelves or Glass plates can be omitted. It increases the Customer benefit, since only a small part of the container rear wall is damp is. There is no risk of moisture penetration or risk of freezing to be stored refrigerated goods. It enlarges itself the footprint, since the rear stop or the Boundary strip is eliminated and thus the storage area is not restricted.

there Can one or more upper shelves to keep away of the chilled goods from the rear wall with a boundary strip and the one or more lower shelves to the rear wall touching Storage of refrigerated goods without boundary strip be formed. For those shelves that are at a height located on the back wall of the evaporator cooled is still required boundary strips to refrigerated goods from the back wall to keep away. For shelves, which can be arranged below the condensation gutter can whereas the boundary strips are omitted. So in particular usually the shelves of the lower two thirds of the total height of the refrigerator without boundary strips.

Of the At least one lower shelf can be a larger one Depth than the at least one upper shelf. It's falling not just the boundary strips away, but it is not anymore required that some distance between the rear, the Rear wall facing edge of the shelf and the rear wall is complied with. Thus, according to the invention of Shelf be pulled up to the very back wall. As a result, the lower shelves, i. H. the shelves, which are located below the condensate drainage are greater in depth than the upper ones Shelves that are located above the drainage channel.

The to the open side of the inner container or to the door side the refrigerator pointing front ends of the upper and lower shelves can be in one common Front plane end. In this case results from the larger one Depth of the lower shelves an enlargement the total available footprint within of the refrigerator.

An exemplary embodiment of the invention is based on the 1 to 4 described. From the detailed description of this specific embodiment, there are also other general features and advantages of the present invention.

It demonstrate:

1 a perspective view of a refrigeration appliance for household purposes with an inner container having a cooling space and a freezer compartment;

2 a partial perspective view of Refrigerating appliance according to 1 with a relative to the prior art according to the invention upwards defrost water channel;

3 a cross-sectional view of the refrigerator according to 1 with receptacles for upper and lower shelves;

4 two according to the invention upper shelves and three according to the invention lower shelves, which are designed as glass plates.

An in 1 illustrated household refrigerator 1 has a body 2 with an inner container 3 on. The inner container 3 is in an overhead freezer 4 and a downstairs refrigerator 5 divided up. The freezer room 4 generally used for freezing frozen food at about minus 18 degrees Celsius. The freezer room 4 is a first evaporator 6 assigned, which is hidden behind a freezer compartment rear wall 7 is arranged. In the freezer room 4 is a rust 8th used for storage of frozen food on two levels. The freezer room 4 is when the freezer compartment door is open 9 accessible. To open, the freezer compartment door points 9 a first grip 10 on.

The fridge 5 is generally used for frost-free cooling of refrigerated goods, preferably at temperatures between plus 4 and plus 8 degrees Celsius. The fridge 5 However, it can also be designed as a zero degree compartment, in particular for keeping fruit or vegetables fresh. The fridge 5 has a back wall 11 on, behind the hidden a second evaporator 12 is arranged. The second evaporator 12 is with the first evaporator 6 connected in series, ie it is a single-circuit refrigeration cycle, to a common compressor 13 ( 3 ) connected. The fridge 5 is when the fridge door is open 14 accessible. To open, the refrigerator door points 14 a second grip 15 on. On side walls 16 of the inner container 3 or the refrigerator 5 are shots 17 for upper shelves 18 and lower shelves 19 arranged. At a height immediately below the second evaporator 12 is a dew water channel 20 on the inside of the back wall 11 arranged. The dew water channel 20 has a drain neck 21 on, to which a drain hose 22 ( 3 ) connected. In the fridge 5 can, as in 1 shown, an optional fan 23 be arranged for air circulation within the refrigerator 5 ensures, but without additional cold air from outside the inner container 3 in the fridge 5 blow.

In the 2 is shown as the invention dewatering channel 20 opposite to a configuration S according to the prior art is arranged offset upwards. In the generic Kühlgefrierkombinationsgeräten the defrost channel is after the embodiment S on the ground 24 or at a bottom step of the inner container 3 arranged. Opposite this known location is the condensation gutter according to the invention 20 as indicated by the arrow P in 2 indicated, offset upwards. Behind a first wall section 25 is the second evaporator 12 obscured (and therefore in 2 not visible). In the area of the first wall section 25 passing through the second evaporator 12 Chilled, humidity can be in the form of dew drops 26 condense. A second wall section 26 is uncooled, as behind this wall section 26 the second evaporator 12 no longer extends. The area of the second wall section 26 is therefore dry, ie there are no dew drops shown. The dew water channel 20 is located in the transition area between the first cooled wall section 25 and the second uncooled wall section 26 ,

The dew water channel 20 has a gutter bed 27 on. The gutter bed 27 is from a gutter wall 28 and a gutter floor 29 formed, at the free edges of the gutter wall 28 is arranged circumferentially. The gutter floor 29 has a slope, which on the introduced into it drain neck 21 tapers. The drain neck 21 opens into the drain hose 22 ( 3 ). Below the condensation gutter 20 are on the sidewalls 16 of the inner container 3 or the refrigerator 5 first recordings 17a for lower shelves 19 and by way of example a second shot 17b for a top shelf 18 shown.

In 3 are in cross section several second shot 17b for upper shelves 18 and several first shots 17a for lower shelves 19 shown. At a height between the second shot 17b the upper shelves 18 and the first recordings 17a the lower shelves 19 is the condensation gutter according to the invention 20 arranged. To the dew water channel 20 is the drain hose 22 connected. The drain hose 22 is up to an evaporator shell 30 guided on the top of the compressor 13 is arranged. Instead, as in 2 shown inside the fridge 5 running, the drain hose can 22 also inside the foam insulation 31 be arranged running.

In 4 are bounded by the dashed corpus shown 2 two according to the invention upper shelves 18 and three lower shelves according to the invention 19 as glass plates 32 are shown. Every glass plate 32 has an overmolded frame 33 on. Only the upper shelves 18 additionally have a border bar 34 on. The lower shelves 19 are without a bounding bar 34 educated. The lower shelves 19 also have a greater depth T than the depth t of the upper shelves 18 , The to the open side of the inner container 3 or to the door side of the refrigerator facing front ends 35 the upper shelves 18 and lower shelves 19 end in a common frontal plane 36 ,

1

Household refrigerator

2

corpus

3

inner container

4

freezer

5

refrigerator

6

first Evaporator

7

Freezer rear wall

8th

rust

9

Freezer door

10

first Handle

11

rear wall

12

second Evaporator

13

compressor

14

Fridge door

15

second Handle

16

side walls

17

Recordings

18

upper shelves

19

lower shelves

20

condensation channel

21

drain connection

22

drain hose

23

fan

24

ground

25

First, cooled wall section

26

second, uncooled wall section

27

Rinne bed

28

Rinnenwandung

29

channel base

30

evaporator dish

31

foam insulation

32

glass plate

33

overmolded frame

34

boundary strip

S

condensation channel According to the state of the art

P

arrow

T

depth

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19907124 A1 [0002]

Claims (10)

Refrigerating appliance, in particular household refrigerating appliance ( 1 ), with a body ( 2 ), which has an inner container ( 3 ) with a cold room ( 5 ) and a freezer compartment ( 4 ) forms, and a Einkreiskältekreislauf, comprising a the freezer compartment ( 4 ) associated with the first evaporator ( 6 ) and a refrigerator ( 5 ) behind a rear wall ( 11 ) of the refrigerator ( 5 ) arranged second evaporator ( 12 ), the back wall ( 11 ) of the inner container ( 3 ) a condensation gutter ( 20 ), characterized in that the condensation gutter ( 20 ) on the inside of the rear wall ( 11 ) at a level immediately below the second evaporator ( 12 ) is arranged. Refrigerating appliance according to claim 1, characterized in that an upper edge of the condensation gutter ( 20 ) on the inside of the rear wall ( 11 ) is arranged at a height in which a lower edge of the second, behind the rear wall ( 11 ) hidden evaporator ( 12 ) is located. Refrigerating appliance according to claim 1 or 2, characterized in that the second evaporator ( 12 ) in an upper third of the cold room ( 5 ) behind the inside of the back wall ( 11 ) and the condensation gutter ( 20 ) at two thirds of the total height of the cold room ( 5 ) on the inside of the rear wall ( 11 ) is attached. Refrigerating appliance according to one of claims 1 to 3, characterized in that the condensation gutter ( 20 ) in one piece with the rear wall ( 11 ) having inner container ( 3 ) is trained. Refrigerating appliance according to one of claims 1 to 4, characterized in that the condensation gutter ( 20 ) a drain neck ( 21 ), to which a drain hose ( 22 ), for discharging condensation water from the condensation gutter ( 20 ) to an evaporating dish ( 30 ) on a compressor ( 13 ) of the refrigerator, is connected. Refrigerating appliance according to claim 5, characterized in that the drain hose ( 22 ) behind the back wall ( 11 ), outside the cold room ( 5 ) to one below the inner container ( 3 ) arranged compressor ( 13 ) is guided. Refrigerating appliance according to one of claims 1 to 6, characterized in that in the cold room ( 5 ) at least one upper shelf ( 18 ) above the drainage channel ( 20 ) and at least one lower shelf ( 19 ) below the drainage channel ( 20 ), wherein the at least one lower shelf ( 19 ) to the back wall ( 11 ) contacting warehouses of refrigerated goods without boundary strip ( 34 ) is trained. Refrigerating appliance according to claim 7, characterized in that one or more upper shelves ( 18 ) for keeping the chilled goods away from the rear wall ( 11 ) with a bounding bar ( 34 ) and the one or more lower shelves ( 19 ) to the back wall ( 11 ) contacting warehouses of refrigerated goods without boundary strip ( 34 ) are formed. Refrigerating appliance according to claim 7 or 8, characterized in that the at least one lower shelf ( 19 ) a greater depth than the at least one upper shelf ( 18 ) having. Refrigerating appliance according to claim 9, characterized in that the open side of the inner container ( 3 ) or to the door side of the refrigerator pointing front ends ( 35 ) of the upper shelves ( 18 ) and the lower shelves ( 19 ) in a common frontal level ( 36 ) end up.