WO2008025696A2

WO2008025696A2 - Refrigerating device comprising supports for a refrigerated product carrier

Info

Publication number: WO2008025696A2
Application number: PCT/EP2007/058622
Authority: WO
Inventors: Roland Benitsch
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2006-08-29
Filing date: 2007-08-20
Publication date: 2008-03-06
Also published as: WO2008025696A3; EP2059745A2; DE202006013232U1

Abstract

The invention relates to a refrigerating device having a refrigerating compartment (1) that comprises an inner container (7) that accommodates the refrigerated product and that comprises supports for a refrigerated product carrier (10), said supports being formed in the inner container wall. One or more rear supports (9, 49) are embodied as a projection (9) or a recess (49) in the rear wall (13) of the inner container (7) in the depth direction of said inner container (7).

Description

Refrigerating appliance with holders for a refrigerated goods carrier

The present invention relates to a refrigeration device with a refrigeration compartment, which has an inner container receiving the refrigerated goods with holders formed in the inner container wall for a refrigerated goods carrier.

Such a refrigerator is described for example in DE 43 35 160 A1. In this refrigerator horizontal guide rails are provided as holders for storage shelves on opposite side walls of the inner container. The guide rails can be formed in the side walls or molded outwards (column 2, lines 14 to 21). The production of the inner container is usually done by drawing (deep drawing) a plastic board.

As shown in the attached FIGS. 1 a to 1 d, a matrix a, also referred to as a foam mold, and a stamp b, also referred to as a drawing mold, are used for this purpose. On the punch b are laterally groove-shaped depressions d. On the die a slide e are arranged, which are perpendicular to the side walls of recesses f and extendable and complementary to the recesses d are configured. In Fig. 1 a, the slide e are shown in the extended state.

The molding of the inner container takes place by first a plastic plate c between the die a and punch b is positioned. The stamp b then moves into the die a, wherein the slide e in the retracted state, ie in the recesses f sunk state. The plastic sheet c made malleable by heating is drawn into the die a by the punch b. If the punch b is completely retracted into the die a, as shown in the sectional views of FIGS. 1 b and 1 c, the slides e are extended from the side of the die a in the direction of the punch b. The slides e pull parts of the already drawn plastic board c in the recesses d, whereby lateral guide rails g are formed. The slides e are then moved back into the recesses f of the die a, the punch b is extended out of the die a and the inner container h is released from punch b or die a. With the extendable sliders to prevent the plastic in the region of the guide rails to be formed in the side walls g is stretched too much in the depth direction of the inner container, which could result in tearing of the thin plastic wall. This would be the case when using a die / punch system with immovable projections. Plastic molds with slide are expensive and prone to failure due to the complex mechanism in operation.

The object of the present invention is therefore to provide a refrigeration device of the aforementioned type, which is simple and inexpensive to manufacture in relation to the holders to be molded into the inner container wall for a refrigerated goods carrier.

This object is achieved with a refrigerator with the features of claim 1. Preferred embodiments are the subject of the dependent claims.

Accordingly, a refrigeration device is provided with a refrigeration compartment, which comprises an inner container receiving the refrigerated goods with holders formed in the inner container wall for

Introducing a refrigerated goods carrier in the refrigeration compartment. According to the invention that

Refrigeration compartment one or more rear brackets, which as a formation or shaping in the

Rear wall of the inner container are formed in the depth direction of the inner container.

To form the brackets in the rear wall of the inner container during the deep drawing of the plastic board no slides are necessary. This will be the

Forming the brackets in the wall of the inner container considerably simpler and thus more cost-effective compared to a solution in which in the sidewalls or molded brackets, for example, horizontal guide rails, along the

Side walls extend over the entire depth of the inner container, which would be necessary slide.

Preferably, the at least one holder is formed by a formed out of the rear wall of the inner container outward molding, ie it is a, seen from the interior of the inner container ago, recess in the rear wall of the inner container. The advantage of this is that the recess extends from the inner container wall to the outside and thus the inner container seen from the outside has only a protruding shape and no recess. The heat insulation of the refrigeration compartment between a refrigerator outer wall and the inner container usually Insulating foam to be introduced thus only has to surround a projecting formation. This is manufacturing technology easier to fill than a depression with insulating foam, as is necessary in the guide rails according to DE 43 35 160 A1.

Preferably, the molding has a support surface for the refrigerated goods, which is formed by a lower wall of the molding. This allows a simple

Design of the molding, since the bottom wall only a sufficiently large, adapted to the design of the refrigerated goods support surface for placing the

Must have refrigerated goods carrier. An embodiment of the bracket for pinching or

Engaging the refrigerated goods carrier is therefore not necessary. If the at least one rear holder is formed by a molding in the rear wall of the inner container, then the support surface for the refrigerated goods is preferably through a top wall of the

Impression formed.

In the refrigeration appliance according to the invention, the rear wall has a central area which remains free of the rear holders of the refrigerated goods carrier designed as indentations or formations. In this central region, an evaporator plate for cooling the interior of the refrigeration compartment can be arranged on the outside of the inner container.

Preferably, the formation or shaping is formed in a rounded edge region of the rear wall, which adjoins a side wall of the inner container. In embodiments, i. Recesses in the rear wall of this is of great advantage, since the rear wall of the inner container associated, i. Rear edge of the refrigerated goods carrier can be formed in a straight line. Furthermore, it is advantageous if the recesses formed to the outside in the depth direction of the inner container do not extend beyond the central region of the rear wall. This avoids that the depressions form cold bridges that are less well insulated than the central area of the rear wall.

Preferably, the refrigeration compartment has a front opening and at least one front holder for the refrigerated goods carrier, which is designed as a molding or molding in a front side wall region of a side wall of the inner container, wherein the molding or molding starting from a surrounding the opening - A -

Edge extends only over part of the depth of the inner container. Accordingly, the refrigeration device in addition to the at least one, in the rear wall or molded, rear bracket at least one further, second formed in a front side wall portion, front bracket. Preferably, the refrigerated goods carrier is supported by a total of four, two rear holders and two front holders, of which a first of the front holders in a front, adjacent to the edge of the opening side wall portion of the left side wall and a second in a front, to the edge of the opening adjacent sidewall area of the right sidewall.

Preferably, the formed as a molding or molding rear and front brackets are open without undercuts to the front.

Since the at least one front holder only extends over part of the depth of the inner container, it can be formed without a slide into the inner container wall, without fear of excessive stretching of the wall and thus tearing when the inner container is formed from a plastic plate. Since the sidewalls of the inner container remain free in the rear side wall portions of moldings or recesses for holders of the refrigerated goods carrier, evaporator plates or an evaporator tube wound around the inner container for cooling the interior of the inner container can be arranged on these rear sidewall regions. Preferably, the at least one front support preferably extends from the edge of the opening only to more than one third, more preferably only to over a quarter and more preferably only to more than one sixth of the depth of the inner container.

The refrigerated goods carrier is preferably designed plate-shaped, wherein the front, extending in the width direction of the inner container edge is preferably formed longer than the rear, extending in the width direction of the inner container edge. The refrigerated goods carrier preferably has a grid structure. The grid structure preferably comprises a front grid bar supported by front brackets and a rear grid bar supported by the rear brackets formed in the rear wall. In the refrigerator according to the invention, an evaporator tube is preferably wound around the inner container for cooling the interior of the refrigeration compartment. As a result, a uniform cooling of the refrigeration compartment is achieved. Alternatively, plate-shaped evaporator plates may be attached to the outside of the inner container at the rear side wall portions, the ceiling, the bottom of the inner container and / or in the central portion of the rear wall of the inner container.

The refrigerator according to the invention is preferably a refrigerator / freezer combination device in which the refrigeration compartment is a freezer compartment.

Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying figures. Show it:

Fig. 2 is a front perspective view of a household refrigerator / freezer combination device with an open freezer compartment 1 with inner container

7;

3 shows a longitudinal section through the inner container 7 of Figure 2 in a horizontal plane A shown in Figure 2 in the amount of holders 8 and 9 for a refrigerated goods 10.

4 shows a perspective rear view of the inner container 7 of the freezer compartment 1 with the appliance body 3 shown open;

Fig. 5 is a further perspective rear view of the inner container 7 of the

Freezer compartment 1 with this arranged arranged evaporator tube 28;

Fig. 6 is a longitudinal section through a drawing die device with a die 36 and a punch 37 for molding the inner container 7 of the freezer compartment 1 shown in Figs. 2 to 4, wherein the longitudinal section in the amount of holders shown in Fig. 4 8, 9 for the Refrigerated goods tray 10 runs; Fig. 7, the drawing die apparatus of Fig. 6 during retraction of the punch 37 in the

Die 36 for molding the inner container 7 made of a plastic plate 35;

FIG. 8 shows the drawing molding apparatus of FIG. 6 with the punch 37 completely retracted into the die 36; FIG.

Fig. 9 shows a second embodiment of the present invention in the

Rear wall 13 of an inner container 47 molded holders 49;

10 is a partial perspective view of one of the indentations 49 of FIG.

2 shows a first embodiment of a refrigeration device according to the invention. Shown is an upper part of a refrigerator / freezer combination device in a perspective front or side view with a freezer compartment 1 and arranged underneath and thermally separated from this cooling compartment 2, which are each arranged in a thermally insulated body 3. The freezer compartment 1 is frontally closed with a heat-insulating door 4, which is in Fig. 2 in the open position. The refrigerated compartment 2 is closed by a thermally insulated door 5.

The freezer compartment 1 comprises a molded plastic inner container 7. On the inner container 7 are for an insertable into the freezer compartment refrigerated goods tray 10, here a support grid 10, front brackets 8 and rear brackets 9. As can be seen from Fig. 3, the one Longitudinal section through the inner container 7 shows, hold each two located at the same height front brackets 8 and two rear brackets 9, the support grid 10th

Fig. 4 shows a rear view of the inner container 7 of the freezer compartment 1. The open-front, box-shaped inner container 7 is made in one piece by drawing a plastic sheet, which will be explained in more detail with reference to FIG. He has, as can also be seen from the longitudinal section of Fig. 3, two side walls 1 1 and 12, a rear wall 13, a ceiling 14 and a bottom 15, which surround an interior 20 of the freezer compartment 1. In the depth direction of the inner container 7 is made slightly tapered, this is the release of the formed by pulling inner container 7 of facilitates the molding device. The front opening 16 of the inner container 7 is surrounded by a circumferential, to the side walls 1 1 and 12, the ceiling 14 and the bottom 15 angularly arranged frame-shaped edge 17, which is also formed in the draw forming the plastic circuit board.

As can be seen in particular from FIGS. 3 and 4, the rear holders 9 for the support grid 10 are formed in rounded edge regions 18 of the rear wall 13, which adjoin the side walls 11 and 12, respectively. The brackets 9 are formations 9 of the inner container wall, which are formed in the draw forming the inner container 7 with. They protrude from outside the inner container 7 seen over the adjacent to the formations 9 outer surfaces of the inner container 7. Seen from the interior 20 of the inner container 7, as shown in Fig. 2, are recesses 9 in the inner container wall. Each formation 9 comprises, as shown in FIG. 3, a bearing surface 23 for the refrigerated goods carrier 10, which is formed by a lower wall 23 of the formation 9. Overall, four recesses 9 are formed with bearing surfaces 23 in the rounded edge regions 18 of the rear wall 13, two each are in the same plane. Thus, the refrigerated goods 10 shown in Fig. 2 can be placed in two different heights spaced from the bottom 15 in the freezer compartment 1 and placed on the support surfaces 23.

The formations 9 are limited to the rounded edge regions 18 of the rear wall 13. A central, rectangular region 22 of the rear wall 13, to which the rounded edge regions 18 adjoin, is free of formations 9 for holding the refrigerated goods carrier 10. He is just trained.

The front brackets 8 for the refrigerated goods 10 are formed as well as the rear brackets 9 by formations 8 of the inner container wall. The front brackets 8 are located in front, rounded side wall portions 24 and 25 of the side walls 1 1 and 12, each adjacent to the edge 17. Rear side wall portions 27 and 29, each adjoining a front side wall portion 24, 25, are free of indentations or formations.

The groove-shaped horizontally extending formations 8 extend from the edge 17 of the opening 16 only over part of the depth of the inner container 7, at the embodiment shown in Fig. 2-4 over less than a sixth of the depth. As shown in FIG. 3, each formation 8 comprises a support surface 26 for the refrigerated goods carrier 10, which is formed by a lower wall 26 of the formation 8.

The refrigerated goods carrier 10 having a grid structure comprises, as shown in FIG. 3, a front grid bar 30 and a rear grid bar 31 arranged parallel thereto and mutually parallel struts 31 arranged at right angles thereto, each with one end on the front grid bar 30 and with the one other end to the rear

Grating bar 31 are fixed. The rear grid bar 31 lies with its ends on the

Support surfaces 23 of the rear formations 9 and the front grille bar 30 with its ends on the bearing surfaces 26 formed by the front formations 8. The front grid bar 30 is made longer than the rear grid bar 31.

As shown in broken lines in FIG. 3, the ends of the rear grille bar 31 may also be angled towards the rear of the formations 9. Thus, the bearing surfaces 23 can be used in their entire depth for storage of refrigerated goods tray 10.

The rear side walls 27 and 29, which are free of formations and recesses and thus flat, form a large part of the surface of the side walls 11 and 12. Thus, the possibility exists, as shown in FIG. 5, of cooling the interior 20 of the freezer compartment 1 with a wound evaporator tube 28 in which compressed, liquefied refrigerant evaporates to surround. The winding extends over the rear side wall portions 27 and 29, the ceiling 14 and the bottom 15. Deviating from the illustrated embodiment, it is also possible, on the rear wall 13, on the rear side wall portions 27, 29, on the ceiling 14 and / or the bottom 15 from the outside evaporator boards to the inner container 7 to install.

After mounting the coiled evaporator tube 28 to the inner container 7 insulating foam is introduced into the space between the body 3 of the refrigerator and the inner container 7, which is not shown in Fig. 4. Here are the outwardly projecting protrusions 8, 9 of advantage. A foaming of projections is manufacturing technology easier than the filling of wells, as in In the inner container wall molded guide rails DE 43 35 160 A1 would be the case.

Figs. 6 to 9 illustrate a method of manufacturing the inner container 7. The inner container 7 can be manufactured by drawing a plastic plate (board) 35 in a drawing die apparatus. The wall thickness of the inner container 7 is shown in Figs. 6 to 9 for better illustration shown stronger than it actually is.

As shown in Fig. 6, the die-forming apparatus shown in a longitudinal section comprises a die 36, also referred to as a foam mold, and a punch 37, also referred to as a drawing die. In the region of the mounts 8, 9 to be formed for the refrigerated goods carrier 10, the die 36 has correspondingly shaped depressions 38, 39 and the stamp 37 has projections 40, 41 formed complementary thereto. The plastic board 35 is placed between the die 36 and punch 37 and made soft and malleable by heating.

As shown in Fig. 7, the punch 37 is retracted into the die 36, whereby the punch 37, the plastic material 35 moves into the die 36.

Fig. 8 shows the punch 37 in a fully retracted into the die 36 state. The plastic material 35 now has the desired shape of the inner container 7. Subsequently, the punch 37 is extended out of the die 36.

The forms of the brackets 8 and 9 for the refrigerated goods tray 10 is thus without slider. The preparation of the inner container 7 with molded into the inner container wall brackets 8, 9 for a refrigerated goods tray 10 is thereby simplified and thus more cost-effective against a forming of the holders for a refrigerated goods tray with slides.

9 and 10 show an embodiment of the present invention, in which the inner container 47 as rear brackets no formations, as is the case in the embodiment according to FIGS. 2 to 5, but indentations 49 in rounded edge regions 18 of the rear wall 13th having. It is therefore, seen from the interior 20 of the inner container 47, to projections 49 and from outside of the inner container 47 to depressions. Each indentation 49 comprises a bearing surface 50 for the refrigerated goods carrier 10, which is formed by an upper wall 50 of the indentation 49. The indentations 49 in the rear wall 13 of the inner container 47 can be manufactured without a slide by draw forming. The front brackets 8 in the inner container 47 are identical in design and arrangement with those of the inner container 7 of FIG. 2 to 5 match.

Notwithstanding the embodiment described above with reference to FIGS. 9 and 10, the rear wall 13 may instead of the two indentations 49 have only one, for example, in the central region 22 of the rear wall 13 inwardly molded, for example, horizontal, rib-shaped indentation, on which by an upper Formed wall forming surface of the rear grid bar 31 of the support grid 10 can be placed, which is illustrated in Fig. 10 in broken lines.

Claims

claims

1. Refrigeration device with a refrigeration compartment (1), which receives the refrigerated goods

Inner container (7) with holders molded into the inner container wall for a refrigerated goods carrier (10), characterized in that the refrigerated compartment (1) has one or more rear holders (9, 49) which serve as a molding (9) or indentation (49). in the rear wall (13) of the inner container (7) in the depth direction of the inner container (7) are formed.

2. Refrigerating appliance according to claim 1, characterized in that the at least one rear holder (9) by a from the rear wall (13) of the inner container (7) outwardly formed molding (9) is formed.

3. Refrigerating appliance according to claim 2, characterized in that the formation (9) has a bearing surface (23) for the refrigerated goods carrier (10), which is formed by a lower wall (23) of the formation (9).

4. Refrigerating appliance according to one of the preceding claims, characterized in that the rear wall (13) has a central region (22) formed by the formations (9) or recesses (49) of the inner container wall rear brackets (9) for the refrigerated goods (10) remains free.

5. Refrigerating appliance according to one of the preceding claims, characterized in that the formation (9) or indentation (49) in a rounded edge region (18) of the rear wall (13) on a side wall (1 1, 12) of the

Inner container adjacent, is formed.

6. Refrigerating appliance according to claim 1, characterized in that the refrigeration compartment (1) has a front opening (16) and at least one front holder (8) for the refrigerated goods carrier (10), which is in the form of a molding (8) or molding a front side wall region (8). 24, 25) of a side wall (1 1, 12) of the inner container (7) is formed, wherein the molding (8) or Forming starting from an edge surrounding the opening (16) extends only over part of the depth of the inner container (7).

7. Refrigerating appliance according to claim 6, characterized in that extending the at least one front holder (8) starting from the edge (17) only to over a quarter, in particular only up to a sixth of the depth of the inner container (7).

8. Refrigerating appliance according to claim 7, characterized in that as a formation (9, 8) or indentation (49) formed rear and front brackets (8, 9) are open without undercut forward.

9. Refrigerating appliance according to one of the preceding claims, characterized in that the refrigerated goods carrier (10) is designed plate-shaped, wherein the front, in the width direction of the inner container (7) extending edge (30) is preferably designed to be longer than the rear, in Width direction of the

Inner container (7) extending edge (31).

10. Refrigerating appliance according to one of the preceding claims, characterized in that the refrigerated goods carrier (10) has a rectilinear rear edge (31).

1 1. Refrigerating appliance according to one of the preceding claims, characterized in that the refrigerated goods carrier (10) has a grid structure (30, 31, 32).

12. Refrigerating appliance according to one of the preceding claims, characterized in that for cooling the interior of the refrigeration compartment, an evaporator tube (28) is wound around the inner container (7).

13. Refrigerating appliance according to one of the preceding claims, characterized in that it is a cooling / freezing combination device, wherein the refrigeration compartment (1) is a freezer compartment (1).