WO2012028468A2

WO2012028468A2 - Refrigeration device, in particular a domestic refrigeration device

Info

Publication number: WO2012028468A2
Application number: PCT/EP2011/064235
Authority: WO
Inventors: Alfred Raab; Roland KÜMMEL; Helmut Steichele
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: DE102010040251A1; CN103080673B; RU2013110868A; RU2537535C2; WO2012028468A3; EP2612086A2; CN103080673A

Abstract

The invention relates to a refrigeration device, in particular a domestic refrigeration device, having a device body comprising an inner container (21) delimiting a cooling chamber (25), wherein, together with at least one outer wall part (11), said cooling chamber defines a hollow space filled with thermal insulation foam (23), and having at least one evaporation chamber (29) for collecting condensate forming in the cooling chamber (25). According to the invention, the outer wall part (11) and the evaporation chamber (29) form an integral assembly made of a uniform material.

Description

Refrigerating appliance, in particular household refrigerating appliance

The invention relates to a refrigeration device, in particular a household refrigerating appliance, according to the preamble of claim 1.

A conventional refrigeration device has a cooling chamber defining device body, which is constructed with double-walled with intermediate cavity. The cavity of the device body is foam-tight limited by an inner container and by outer wall parts and filled with a Wärmeisolierschaum. Depending on requirements, the outer wall parts can be large-area wall elements made of cardboard with low component rigidity or supporting structural parts, for example a foaming cross-member, with which the device body is already stiffened before the foaming process is carried out.

From DE 20 2006 019 473 IM a generic refrigeration device with such a device body is known. The refrigeration unit also shows the back of the appliance

Evaporation chambers, which can collect the led out of the cold room condensation. Using the waste heat emitted by the compressor and / or condenser of the refrigerant circuit, the condensate collected in the evaporation chamber is evaporated into the environment.

In DE 20 2006 019 473 U1 the evaporation chambers are arranged as separate components one above the other on the condenser, the number of which can be varied depending on the design of the refrigeration device. The evaporation chambers are designed as separate components and each provided with holding elements for mounting on the condenser. In the manufacture of the refrigeration unit, therefore, a large number of separate components are to be kept in reserve and these must be technically complicated to install in the refrigeration appliance.

The object of the invention is to provide a refrigeration appliance, in particular domestic refrigeration appliance, in which, despite component reduction, efficient condensation of condensation water is made possible.

The object is solved by the features of claim 1. preferred

Further developments of the invention are disclosed in the subclaims. The refrigeration device according to the invention has a device body, the one, the

Refrigerator has delimiting inner container. The inner container defines, together with outer wall portions, a cavity filled with thermal insulating foam. In addition, the refrigeration device has at least one evaporation chamber for collecting condensate forming in the cooling space. According to the invention, the evaporation chamber and an outer wall part are not complex in terms of component technology as separate components, but form the outer wall part and the evaporation chamber together a material unit and integrally formed component unit. The refrigeration device according to the invention is used for household management and may be, for example, a refrigerator, a freezer, a freezer, a wine storage cabinet or a fridge freezer.

Depending on the requirements, the outer wall parts delimiting the foam-tight cavity on the outside can be designed with different component strength. The outer one

Rear wall can be formed by way of example from large-scale wall elements made of cardboard with low component strength, which are held by supporting structural elements, such as a device-back Schäumtraverse. Such trusses can extend in the device side direction between the lateral outer walls of the refrigerator and connect them together. As a result, the device body is already before the

Foaming process sufficiently stiffened. The lateral outer walls of the refrigeration device can be produced by way of example from a steel sheet.

The evaporation chamber, which is integrated in the outer wall section, can be designed to be open at the rear of the unit in order to achieve efficient evaporation. The evaporation chamber is preferably arranged in the vicinity of a condenser of the refrigerant circuit in order to use its waste heat for efficient evaporation. To further increase the evaporation efficiency can in the outer wall part more

Be formed evaporation chambers, which are arranged vertically one above the other cascade. In this case, the condensation can first in an upper

Evaporation chamber are passed and then drain through a water overflow in the chambers arranged below. As already mentioned above, the waste heat of the condenser accelerates the evaporation of the condensate collected in the chambers. The condenser can usually in the Bautiefenrichtung back and outside of the

Be arranged evaporation chambers. Thus, the refrigeration device is designed to be compact overall in the Bautiefenrichtung, the condenser can be mounted directly with only a small distance to the rear panel. As a result, only a small space is available for the integrated in the outer wall part evaporation chamber. Against this background, it is preferred if the evaporation chamber protrudes in the form of a pocket over a predetermined installation depth into the cavity of the device body filled with heat insulating foam. The arrangement of

Evaporation chambers therefore does not result in an increase in the external dimensions of the refrigeration device in the Bautiefenrichtung.

The outer wall part formed with the evaporation chamber may preferably be a Schäumtraverse, which runs back of the device in the lower corner of the refrigerator. The Schäumtraverse can form a top wall, which limits a machine room located underneath the top. In the engine room, the compressor of the refrigerant circuit is arranged in a conventional manner. In the rear, lower corner region of the device body, the material thickness of the Wärmeisolierschaums may be particularly large due to geometric conditions, although specifically this area is not critical in terms of heat transfer. With the evaporation chamber projecting beyond the overall depth into the device body cavity, the material thickness of the heat insulating foam can be advantageously reduced, especially with this lower, noncritical corner region. As a result, unnecessary foam volume can be saved and the resulting space for condensation condensation can be used.

In the device side direction, the length of the evaporation chamber integrated in the outer wall parts substantially corresponds to the width of the refrigeration device. As a result, a correspondingly large evaporation area is achieved. The Schäumtraverse is to be interpreted such that it withstands the foam pressure during the foaming process, without being deformed. Accordingly, a dimensionally stable design of the Schäumtraverse is accordingly relevant despite its integrated evaporation chamber. To stiffen the Foaming traverse, the evaporation chamber can be divided by means of vertical stiffening struts in individual sub-chambers. It also has an advantage for the

Component stiffness proven when an insertion shaft for a Schäumungslanze is passed directly through the receiving space of the evaporation chamber. Of the

Insertion shaft opens with an access opening in the device body cavity. In the access opening, a valve flap may be arranged, which is opened during insertion of the Schäumungslanze, but otherwise is closed foam-tight.

To further stiffening the Schäumtraverse may be formed in profile approximately triangular with the heat insulating foam facing, slanted boundary wall and an approximately horizontal top wall, which limits the engine room upwards. The approximately horizontally extending top wall not only limits the machine room on the upper side, but at the same time also forms a chamber floor, on which the condensation water collects. Between the inclined boundary wall and the horizontal top wall of the Schäumtraverse the at least one evaporation chamber is formed. The

Evaporation chamber is closed on the side end walls in the device side direction. Between the inclined boundary wall and the approximately horizontal top wall, the Schäumtraverse may have further transverse walls with which superimposed evaporation chambers are formed in the Schäumtraverse. The transverse walls are also placed obliquely upward in the Bautiefenrichtung.

As mentioned above, the inclined boundary wall of the Schäumtraverse the heat insulating foam directly faces. In this case, the inclined boundary wall of the Schäumtraverse forms an inclined surface in the inner corner region of the device body cavity. With the inclined surface is the foaming process

Flow behavior of Wärmeisolierschaums greatly improved because the Schäumtraverse occupies an otherwise existing dead space in the inner corner area.

The above-mentioned lateral end walls of the Schäumtraverse form together with the lateral refrigeration equipment outer walls stiffening double wall structures. At the lateral, vertical end walls of the Foaming traverse can also holding elements and a foam passage for

Refrigerant pipes or cables are formed. In addition, in particular in the approximately horizontally extending top wall of the Schäumtraverse a holding element for a leading from the compressor to the condenser refrigerant pipe can be provided. Hereinafter, an embodiment of the invention with reference to the accompanying figures will be described.

1 is an enlarged partial perspective view of a device-back,

lower corner of a refrigerator;

FIG. 2 shows a sectional view along the sectional plane I-I from FIG. 1; FIG. Fig. 3 in a perspective detail view and in exploded view the

Foaming crosshead with associated lateral refrigeration device outer wall; and

4 shows a perspective view of a sectional view along a sectional plane from FIG. 1.

In Fig. 1 is a rear perspective view of the device

Machine room 1 a refrigeration device shown. The engine room 1 is limited by an indicated bottom plate 3 and as a return between the two lateral outer walls 5 of the refrigerator. In the engine room 1 a in Fig. 1 only indicated compressor 7 of the refrigerant circuit is arranged. The upper side of the machine room 1 is bounded according to FIG. 1 by a horizontally extending top wall 9 of a foaming cross member 11, which will be described in detail later. On the top wall 9 of the Schäumtraverse 11 joins in the Bautiefenrichtung y forward a formed example of cardboard horizontal wall element 13, which merges into a recessed vertical boundary wall 15 of the engine room 1.

The refrigerant circuit of the refrigeration device has in addition to the compressor 7 further components, namely condenser, expansion element and an evaporator, the thermally coupled to the refrigerator. These components, like the refrigerant piping, are not shown in the figures for reasons of clarity. The condenser is mounted in a conventional manner on the rear of the device in a vertical plane and slightly spaced from the rear wall 17 of the refrigerator. The condenser extends in a vertical plane to approximately at the level of the lower top wall 9 of the Schäumtraverse eleventh

The rear wall 17 is exemplified by a wall element lesser component strength, such as cardboard, formed and engages edge side respectively mounting flanges 19 of the side walls 5. The rear wall 17 is also with its lower edge in

Connection with the Schäumtraverse 11. The Schäumtraverse 11 is in contrast to the wall member 17 is a supporting structural element which connects the two outer side walls 5 in device side direction x.

In Fig. 2, the rear lower corner portion of the device body is shown in an enlarged sectional view. Consequently, the vertical wall element 17, the

Foaming cross member 11 and the wall elements 13 and 15 each outer wall parts which define together with an inner container 11 a filled with Wärmeisolierschaum 23 cavity. The inner container is made by thermoforming of plastic and limits the cooling space 25. The refrigerator 25 is also connected via a dew point shown in Fig. 2 only two condensed water pipe 27 with a uniformly integrated in the Schäumtraverse 1 1 and integrally evaporation chamber 29 in connection. The condensation water formed in the cooling space can therefore be conducted via the condensation pipe 27 into the evaporation chamber 29 of the foam traverse 1 1. The Schäumtraverse 1 1, according to FIGS. 2, 3 and 4, an approximately triangular stiffening profile, which is spanned between the already mentioned horizontally extending top wall 9 and the heat insulating foam 23 facing, slanted boundary wall 31. Between the top wall 9 and the boundary wall 31, two spaced-apart, obliquely upwardly extending transverse walls 33 are provided. These limit in addition to the already mentioned evaporation chamber 29 more evaporation chambers 29, all of which vertically with each other in the

Foaming cross member 11 are arranged. The thus open at an angle

Evaporation chambers 29 extend in the depth direction y with different Basic depth \ ^, l ₂ , into the cavity of the device body. In this way, the otherwise resulting lower inner corner region is filled by the Schäumtraverse 11, so that the material thickness s of the Wärmeisolierschaums shown in FIG. 2 23 reduced at the height of the Schäumtraverse 1 1.

The transverse walls 33 of the Schäumtraverse 11 extend according to FIG. 1 over the entire width of the refrigerator. To increase the component strength, the evaporation chambers 29 are each divided by means of vertical stiffening walls 34 as shown in FIG. The stiffening walls 34 are dimensioned such that collecting condensation water can be distributed over the entire width of the refrigeration device in the respective evaporation chamber 29. The component strength of the Schäumtraverse 11 can be further increased by special arrangement of a required for the foaming Einführschachts 35. The insertion shaft 35 extends according to FIGS. 2 and 4 in the vertical direction z across the limited by the evaporation chambers 29 receiving spaces 36th

The evaporation chambers 29 of the Schäumtraverse 11 are also closed laterally by means of vertical end walls 37, of which only one in Fig. 3 is shown. As a result, a holder 38 is integrally formed on the end wall 37 on the outside. In addition, at the, shown in FIG. 3 front side of the holder 38, a latching hook 39 is formed, which can be brought into engagement with a locking profile, not shown on the side wall 5 of the refrigerator.

In Fig. 4, the insertion shaft 35 of the Schäumtraverse 1 1 is shown in sectional view. The insertion shaft 35 opens via an access opening 41 in the

Device body cavity. At the access opening 41 of the insertion shaft 35, a valve flap 43 is formed, which can close the access opening 41 foam-tight. To carry out the foaming process, a foaming lance, not shown, is introduced into the device body cavity through the insertion shaft 35, in order to prevent the foaming lance

To introduce foam material. After the foaming process is the

Foaming lance removed again, whereby the valve flap 43 automatically in the

Closed position folded. According to FIG. 4, in the engine compartment 1 bounding top wall 9 of the

Foaming cross member 11 transverse retaining slots 45 integrally formed. In the retaining slots 45 refrigerant pipes can be laid, creating a heat conduction in the

Evaporation chamber 29 can be improved. In the top wall 9 of the

Foaming traverse 11 is also a water outlet 46 is formed, which is also shown in FIG. 2 in side sectional view. In the event that the absorption capacity of the evaporation chambers 29 of the Schäumtraverse 1 1 is insufficient, therefore, excess condensation can drip down to the bottom plate 3, where the dripping condensation can be collected on another, not shown here collecting container.

LIST OF REFERENCE NUMBERS

1 engine room

3 base plate

5 refrigeration appliance side walls

7 compressor

9 top wall

11 foam traverse

13 wall element

15 vertical boundary wall

17 rear wall element

19 mounting flange

21 inner container

23 thermal insulating foam

25 refrigerator

27 Dew-water piping

28 water intake

29 evaporation chambers

31 inclined boundary wall

33 transverse walls

34 vertical stiffening walls

35 insertion shaft

36 receiving spaces of the evaporation chambers 29

37 lateral end walls

38 bracket

39 locking element

41 access opening

43 valve flap

45 holding slots

46 water outlet

x, y, z spatial directions

s Materialstärke of Wärmeisolierschaums 23 h, l ₂ , l ₃ depths of the evaporation chambers 29th

Claims

Refrigerating appliance, in particular household refrigerating appliance, with a device body, which has a cooling chamber (25) delimiting inner container (21) which defines together with at least one outer wall part (11) a space filled with Wärmeisolierschaum (23) cavity, and at least one evaporation chamber (29 ) for collecting in the cooling space (25) forming condensation water, characterized in that the outer wall part (11) and the evaporation chamber (29) form a unitary material and one-piece unit.

Refrigerating appliance according to claim 1, characterized in that the outer wall part (11) is a device-rear Schäumtraverse, which connects as a stiffening element, the lateral outer walls (5) of the refrigerator together.

Refrigerating appliance according to claim 2, characterized in that on the Schäumtraverse (1 1) at least one rear wall element (13, 17) with reduced

Part stiffness, such as cardboard, is connected.

Refrigerating appliance according to claim 1, 2 or 3, characterized in that the evaporation chamber (29) is open to the outside.

Refrigerating appliance according to one of claims 1 to 4, characterized in that the evaporation chamber (29) projects over a construction depth (, l ₂ ,) in the cavity of the device body.

Refrigerating appliance according to claim 5, characterized in that the material thickness (s) of the Wärmeisolierschaums (23) in the region of the Schäumtraverse (11) is reduced.

Refrigerating appliance according to one of the preceding claims, characterized in that a plurality of evaporation chambers (29) in the outer wall part (1 1) are integrated, and / or that the side length of the evaporation chamber (29) substantially corresponds to the width of the refrigerator. Refrigerating appliance according to one of claims 2 to 7, characterized in that the Schäumtraverse (1 1) comprises an insertion shaft (35) for a foaming lance used in the foaming process, in particular the insertion shaft (35) transversely through a receiving space (36) of the evaporation chamber ( 29).

Refrigerating appliance according to one of the preceding claims, characterized in that the receiving space (36) of the evaporation chamber (29) in the device vertical direction (z) by transverse walls (33) is limited, and that

in particular the receiving space (36) of the evaporation chamber (29) in the device side direction (x) by lateral, vertical end walls (37) is limited.

Refrigerating appliance according to claim 9, characterized in that the lateral end walls (37) of the Schäumtraverse (1 1) together with the lateral refrigeration device outer walls (5), optionally with the interposition of a holder (38) for refrigerant pipes or cables, each a stiffening

Double wall structure results.

Refrigerating appliance according to one of claims 2 to 10, characterized in that the Schäumtraverse (11) in profile triangular with the Wärmeisolierschaum (23) facing, slanted boundary wall (31) and with a machine room (1) defining the top wall (9) is formed ,

Refrigerating appliance according to claim 11, characterized in that the inclined boundary wall (31) of the Schäumtraverse (11) forms a transition at the Inneneck- area between a vertical rear wall element (17) and a horizontal wall element (13).

Refrigerating appliance according to one of the preceding claims, characterized in that the outer wall part (1 1) at least one holding element (38, 45) for holding a heating pipe of the refrigerant circuit and / or for holding cables or the like, and / or at least one fastening element (39) for fixing the outer wall part (1 1) on the side

Refrigeration appliance outer walls (5).