WO2012028469A2

WO2012028469A2 - Refrigerator, in particular domestic refrigerator

Info

Publication number: WO2012028469A2
Application number: PCT/EP2011/064237
Authority: WO
Inventors: Karl-Friedrich Laible; Michael Krapp
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2010-09-03
Filing date: 2011-08-18
Publication date: 2012-03-08
Also published as: ES2545010T3; WO2012028469A3; CN103080672A; PL2612085T3; EP2612085A2; CN103080672B; RU2537534C2; DE102010040250A1; EP2612085B1; RU2013110867A

Abstract

The invention relates to a refrigerator, in particular domestic refrigerator, having a basic structure, which defines a refrigerating chamber, having a carrying element (7), on which is fastened a condenser (5) which is connected into the refrigerant circuit, and having at least one evaporation pan (23, 24), for collecting condensation water which forms in the refrigerating chamber. According to the invention, the carrying element (7) of the condenser (5), in order to be formed as evaporation pan, has a tray base (23) and laterally elevated side walls (24) around the periphery.

Description

Refrigerating appliance, in particular household refrigerating appliance

The invention relates to a refrigerator according to the preamble of claim 1. Under a refrigeration device is in particular a household refrigeration appliance understood, ie a refrigeration appliance for household management in households or possibly in the

Catering area is used, and in particular serves to store food and / or drinks in household quantities at certain temperatures, such as a refrigerator, a freezer, a fridge-freezer or a wine storage cabinet.

The condensation water formed in the cold room of a refrigerator is usually conducted by means of a condensed water line from the refrigerator to the outer rear of the device and collected there in an evaporation tray. There, the collected condensate can be evaporated using the waste heat of the compressor and / or the condenser of the refrigerant circuit in the environment.

From DE 202 09 839 U1 a generic refrigeration device is known, which has a, a refrigerator defining device body. The appliance body of the refrigeration device has a device return in its rear lower corner region. This serves as a machine room in which the compressor is arranged. The machine room is limited on the bottom side by a mounting rail on which the compressor rests.

As is further apparent from DE 202 09 839 U1, sits on the top of the compressor, an evaporation tray in which the condensation is collected. The evaporation tray is here attached directly to the compressor to achieve a favorable heat transfer to the condensation. Because of this direct connection to the compressor, however, a specific evaporation tray is required for each type of compressor, resulting in a high part complexity especially in a large-scale production with different refrigeration equipment variants. The object of the invention is to provide a refrigeration device, in particular household refrigeration appliance, in which the evaporation tray is independent of the type of compressor used in the refrigeration device and at the same time provides an increased evaporation capacity. The object is solved by the features of claim 1. preferred

Further developments of the invention are disclosed in the subclaims.

The refrigerator according to the invention has a, a cooling space defining

Device body and a support member on which a compressor connected in the refrigerant circuit is mounted. In addition, at least one evaporation tray is provided for collecting condensation water forming in the cooling space. According to the invention sits the

Evaporation tray is not on the top of the compressor, but is the

Evaporating shell integrated in the support element of the compressor, which has a tub bottom with laterally raised, circumferential side walls. The support element is usually formed from a sheet metal mounting rail, which extends between lateral outer walls of the refrigerator.

The compressor is mounted in a conventional manner via its feet on the support rail or the support element. The support element according to the invention can for this purpose have in the tub bottom corresponding fasteners to which the compressor can be screwed. The fasteners may be vertically upwardly open metal tabs.

The installation-related resulting openings in the support element, such as punched or cutouts for the metal tabs of the compressor attachment, are detrimental for a watertight recording of condensation. Preferably, therefore, the

Have support member for a waterproof training an insert. The insert can be inserted into the trough-shaped support element in a shape-adapted manner. In this way, the inside of the tub-shaped support element is covered waterproof. In this embodiment, therefore, the support element is in two parts with a

formed trough-shaped base body and with the insert disposed thereon.

In such an embodiment, the trough-shaped support element and the

Insert are each optimized according to their function. The support element can Therefore, pretend as a component-fixed structural part of the shell shape, while the insert can be a plastic part with greatly reduced component strength. Particularly preferably, the insert in comparison to the support element essentially without own

Form stability be formed, such as a pliable plastic film whose

Material thickness can be in the range of 0.5mm. In this case, that can be

Insert easily adapt to a complex surface geometry of the trough-shaped support element.

Due to the comparatively large surface of the support element is a

Evaporation area, which is much larger than in the prior art. The large evaporation surface results in a correspondingly enlarged

Evaporation capacity.

To further increase the evaporation performance, the support element of the compressor may be thermally coupled to a refrigerant line of the refrigerant circuit. In this case, the refrigerant line, in particular on the high pressure side of the

Refrigerant cycle, supplemented by one or more loops. These

Loops can be inserted into the tub-shaped support element and with this

get connected. By virtue of the above-mentioned loop guide, the refrigerant line may preferably run around the support element in the manner of a frame. The loops of

Refrigerant line thus form a support element heater, which evaporate

accelerated.

Thus, the refrigerant pipe is protected from external mechanical stresses, it may be disposed within the trough-shaped support member. The

Supporting element may also have attachment points, such as holding grooves or sheet metal tabs, with which the refrigerant line can be laid securely on the support element.

With regard to corrosion protection, the refrigerant lines between the tub-shaped support member and the insert formed of plastic may be arranged. As a result, the refrigerant line, which is usually made of inexpensive galvanized steel, does not come into direct contact with the condensate.

On the other hand, the waste heat can be conducted to the condensation water in a particularly effective manner by means of the preferably thin-walled insert. Alternatively to an arrangement between the support element and insert, the

Refrigerant line also be positioned above the insert. In this case, the refrigerant line is in direct contact with the condensate. For reasons of corrosion protection, it is therefore advantageous if the refrigerant line is made of a coated copper tube.

As already mentioned above, in the trough-shaped support element bent upwards fastening tabs for the compressor attachment are formed. This results in the support element free cuts through the condensation can escape to the support floor. To prevent this, the plastic insert for each compressor attachment point may have a passage which surrounds the fastening tab on the support member waterproof with a raised, cylindrical peripheral wall. In this way it is ensured that no condensation water can flow to the support bottom of the refrigerator via the attachment points.

Depending on the evaporation performance to be achieved with the

Support element thermally coupled refrigerant line upstream or downstream of the

Condenser can be used. In combination with the invention

Support element heating may additionally be another line section of the

Refrigerant circuit can be used as a front frame heating, which heats a, surrounding the feed opening of the refrigerator front frame. Depending on the required heat demand of the front frame heating or the support element heating, the corresponding line sections in the refrigerant circuit can be used in any order before or after the condenser.

Preferably, the support element can limit a machine room of the refrigeration device as a stiffening cross-beam on the bottom side. The engine room can be considered a

Device recession be formed in the rear lower corner of the device body. In this case, the mounting rail may be fixed in the device side direction respectively on the outer side walls of the refrigerator.

Another aspect of the invention is based on the problem that, depending on the type of device to be manufactured (refrigerator, freezer, fridge freezer, static refrigeration unit or no-frost appliance) and device size each produce different amounts of condensed water. Parallel to the different amounts of condensation water, the amount of waste heat from the compressor also varies greatly. This waste heat depends on the device type, the energy efficiency of the device and the compressor and the size of the device.

In accordance with this aspect of the invention, therefore, the number and / or size of the evaporation components used in the refrigeration device, ie. H. an evaporation tray, a condensation gutter, etc., are always designed for dew water intake with regard to the evaporation performance of the device type or device size. Thus, in a basic refrigeration appliance, in which only a reduced evaporation capacity is required, only an evaporation component for condensate water can be provided, for example, the evaporation tray integrated in the compressor support rail. Any addition of further evaporation components makes it possible to gradually increase the evaporation performance in device variants with increased evaporation requirement. Through any combination of these different evaporation components, therefore, an optimal evaporation performance can always be set for different types of refrigeration appliances.

By way of example, a first evaporation component may be a drainage labyrinth which consists of cascade-shaped condensation water channels arranged one above the other on the device rear wall. A second evaporation component may be a per se known evaporation tray, which sits directly on the compressor. In contrast, a third evaporation component can be an evaporation tray arranged above the compressor in the machine room, which does not sit in a form-fitting manner on the compressor but is arranged at a distance above the compressor. These exemplified evaporation components can be provided depending on the design of the evaporation performance in any combination on the back of the device and attached to appropriate adapter points. Below, two embodiments of the invention are described with reference to the accompanying drawings.

Show it: in an enlarged perspective partial view of a rear side, lower corner portion of a refrigerator according to the first embodiment;

2 shows a perspective sectional view of a mounting rail of the compressor of the refrigeration device according to the first embodiment;

FIG. 3 is a view corresponding to FIG. 2 of the mounting rail according to the second embodiment; FIG. and FIG. 4 in a view corresponding to FIG. 3, the mounting rail with removed

Insert.

FIG. 1 is a partial perspective view from the back of the

Refrigerating machine accessible engine room 1 shown. The engine room 1 is freed as a device return at the rear, lower corner area in the device body of the refrigerator. The engine room 1 is in the device side direction x by

Side walls 3 of the refrigerator and in the device vertical direction z limited by a ceiling wall shown in FIG. In the machine room 1 of the refrigerator, a compressor 5 is arranged, which rests on a running as a support rail support member 7. The support element 7 is supported on its in the device side direction x opposite narrow sides 9 on support strips 11 which are facing each other

Inner sides of the side walls 3 are provided. The support strips 11 may additionally wear device feet, not shown, with which the refrigerator is parked on a floor. As is apparent from Fig. 1 further, the support rail 7 at their

Narrow sides 9 mounted on indicated support screw 11 via indicated screw 13. The support bar 7 bounded according to FIG. 1, the engine room 1 on the bottom side.

In addition, FIG. 1 partially shows the condenser 15 arranged on the rear wall of the device. The condenser 15 is arranged together with the compressor 5 and a non-illustrated expansion element and an evaporator in a refrigerant circuit, wherein the device components are fluidly connected to each other via refrigerant lines. By way of example, in Fig. 1, one of the compressor 5 for Condenser 15 leading refrigerant line 17 and a leading from the evaporator to the compressor low pressure line 19 shown.

In the depth direction y, a condensate line 21 is shown in FIG. 1 between a device rear wall and the condenser 15. This runs starting from a water outlet not shown at the back of the device obliquely downward, with the free outlet end 22 is located at a vertical distance a above the support rail 7. The rear water inlet is in turn in a known manner with the cooling chamber of the refrigeration device in fluid communication. The support rail 7 shown in FIG. 1 stiffened in the device side direction x the rear lower corner region of the refrigerator. The mounting rail 7 thus improves the structural design of the refrigerator. In a dual function, the mounting rail 7 is also formed as an evaporation tray in which the dew from the condensation pipe 21 dripping water can be collected.

For this purpose, the support rail 7 is designed in two parts with a trough-shaped base body 8 and a later-described insertion part 27. The trough-shaped main body 8 of the support rail 7 is formed with a recessed bottom bottom 20 which is surrounded by laterally raised, circumferential side walls 24. According to FIG. 1, the trough bottom 20 occupies approximately the entire bottom surface of the machine room 1, as a result of which an evaporation surface is greatly enlarged in comparison with the prior art.

2, the trough-shaped support rail 7 is shown in isolation. Accordingly, the trough-shaped body 8 of the support rail 7 is a shaping, deep-drawn sheet metal blank, which defines the trough shape and on which the insert 27 rests. The insert 27 is a plastic film in the embodiment shown, the

Material thickness s can be in a range of 0.5mm. The plastic film 27 is in contrast to the sheet metal plate with almost no inherent dimensional stability, ie limp, trained and therefore particularly inexpensive to produce, as no special

Profiling in the plastic part 27 is provided. The plastic insert 27 can cover the tub-shaped main body 8 of the support rail 7 waterproof. Installation-related openings in the tub bottom 23 of the

Support rail 7 are therefore without influence on the watertightness. Such

Assembly openings are shown in FIG. 2 by way of example free cuts 29, from which

Sheet metal tabs 31 are bent up vertically, which are used as fasteners for connecting the compressor 5. In addition, in Fig. 2 further mounting technically required mounting holes 33 are shown, which are punched out in the tub bottom 23 of the support rail 7.

2 covers the plastic insert 27 over the entire surface of the tub bottom 23 of the main body 8 of the support rail 7 and additionally also the raised side walls 24. To allow attachment of the compressor 5, are in

Plastic insert 27 for each bent-up fastening tab 34 each have a hollow cylindrical passage 35 is provided which surrounds the respective sheet metal tab 31 at a distance with a raised ring wall.

In the following figures 3 and 4, the support rail 7 according to the second

Embodiment shown. According to the Fig. 3 is to increase the

Evaporation performance connecting the compressor 5 with the condenser 15

High-pressure line 17 partially thermally coupled to the mounting rail 7, whereby the refrigerant line 17 is used as a mounting rail heating. According to FIG. 3, the high-pressure line 17 extends in the manner of a frame around the mounting rail 7 with two pipe loops 36, 37. The two pipe loops 36, 37 are arranged to protect against external mechanical stresses on the inside of the trough-shaped mounting rail 7 directly to the peripheral side wall 24 of the support rail 7. Thus, the outer pipe loop 36 shown in FIG. 3 is laid in a peripheral retaining groove 39. The

Holding groove 39 is formed by appropriate Abkantvorgänge in the upper region of the circumferential side wall 24 such that the open sides of the circumferential retaining groove 39 in the transverse direction facing each other. In contrast, the inner pipe loop 37 runs in the inner corner region between the circumferential side wall 24 and the trough bottom 25. Both the outer and the inner pipe loop 36, 37 is each waterproof covered by the plastic insert 27, so that the pipe loops 36, 37 can not come into contact with condensation.

In Fig. 4, the support rail 7 according to the second embodiment without the plastic insert 27, that is, only the designed as a sheet metal base body 8 is shown. According to FIG. 4, the two pipe loops 36, 37 serving as mounting rail heating open into connecting lines 41, which merge on the narrow side 9 of the mounting rail 7 into the high-pressure line 17 of the refrigerant circuit. 4, additional fastening tabs 43 are provided with which the inner pipe loop 37 is fixedly held on the inner corner region of the trough-shaped mounting rail 7.

LIST OF REFERENCE NUMBERS

I engine room

3 outer side walls

5 compressors

7 supporting element

9 narrow side of the support element 7

I I carrying rails

13 screw connection

15 liquefier

17 high pressure line

19 low-pressure line

21 condensation pipe

22 water outlet

23 tub floor

24 raised sidewall

27 plastic insert

29 free cut

31 fastener

33 mounting opening

35 implementation

36, 37 pipe grinding

39 holding

41 connecting lines

43 sheet metal tabs

a distance

s material thickness

x, y, z spatial directions

Claims

Refrigeration appliance, in particular household refrigeration appliance, with a refrigerator

defining device body, a support element (7) on which a in

Refrigerant circuit switched compressor (5) is fixed, and at least one evaporation tray (23, 24) for collecting itself in the refrigerator bildendem

Condensation water, characterized in that the support element (7) of the compressor (5) for forming an evaporation tray a trough bottom (23) and laterally raised, circumferential side walls (24).

Refrigerating appliance according to claim 1, characterized in that in the tub bottom (23) of the support element (7) at least one fastening element (31) for fixing the compressor (5) is arranged.

Refrigerating appliance according to claim 1 or 2, characterized in that the support element (7) is formed in two parts with a trough-shaped base body (8) and for watertight formation with an insert (27) which is adapted to fit into the trough-shaped base body (8) can be inserted.

Refrigerating appliance according to claim 3, characterized in that the base body (8) of the support element (7) is a dimensionally stable sheet metal part and the insert part (27) a

Plastic part is.

Refrigerating appliance according to claim 3 or 4, characterized in that the insert part (27) in comparison to the base body (8) of the support element (7) is formed without slack substantially without own dimensional stability, and in particular a

Plastic film whose material thickness (s) is preferably in a range of 0.5 mm.

Refrigerating appliance according to one of the preceding claims, characterized in that the supporting element (7) is thermally coupled to at least one line section (36, 37) of a refrigerant line (17, 19) of the refrigerant circuit, in particular to one of the compressor (5) to the condenser (15 ) leading refrigerant line (17).

7. Refrigerating appliance according to claim 6, characterized in that the line section (36, 37) of the refrigerant line (17) extends like a frame around the support element (7).

8. Refrigerating appliance according to claim 6 or 7, characterized in that the

Line section (36, 37) of the refrigerant line (17) on the inside of the trough-shaped support member (7) is arranged, and in particular in the support member (7) supports, such as holding grooves or sheet metal tabs (43) are formed, in which the refrigerant line (36, 37).

9. Refrigerating appliance according to claim 6, 7 or 8, characterized in that the

Line section (36, 37) of the refrigerant line (17) between the base body (8) of the support element (7) and the insert part (27) is arranged.

10. Refrigerating appliance according to one of claims 3 to 9, characterized in that the insert part (27) has at least one passage (35) having a

raised peripheral wall which surrounds the base body (8) of the support element (7) formed fastener (31) watertight.

11. Refrigerating appliance according to one of claims 6 to 10, characterized in that a refrigerant line downstream of the condenser (15) is thermally coupled to the support element (7).

12. Refrigerating appliance according to one of the preceding claims, characterized in that the supporting element (7) on the bottom side limits a machine room (1) of the refrigerating appliance, which is formed as a recess in the rear lower corner region of the appliance body.