WO2012113630A2

WO2012113630A2 - Electric domestic appliance

Info

Publication number: WO2012113630A2
Application number: PCT/EP2012/051743
Authority: WO
Inventors: Michael Krapp; Karl-Friedrich Laible
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2011-02-23
Filing date: 2012-02-02
Publication date: 2012-08-30
Also published as: WO2012113630A3; PL2678624T3; EP2678624B1; EP2678624A2; RU2013140365A; CN103392105A; RU2558939C2; CN103392105B; DE102011004592A1

Abstract

In a domestic appliance, in particular a domestic refrigeration appliance, having an appliance housing which has an outer shell (7) formed from flat material, and a machine space (4) which is kept free in the appliance housing and accommodates machine components (15, 16, 17, 18, 38, 44), at least one element (11; 14) which is in the form of a component carrier and/or as a wall panel that lines one side of the machine space (4) is fastened in the machine space (4) in that it is latched onto at least one peripheral strip (10) of the outer shell (7).

Description

Electric household appliance

The present invention relates to a household electrical appliance, in particular a household refrigerator. A household appliance is understood to mean a device that is used for household management, such as a washing machine, a tumble dryer, a dishwasher, a cooking appliance, an extractor hood or a refrigeration appliance. Under a refrigeration device is in particular a household refrigeration appliance understood, ie a

Refrigeration appliance for housekeeping in households or possibly also in the household

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, a freezer or a wine storage cabinet. Domestic refrigerators conventionally have a cuboid housing having a body and a door hinged at a front of the body, which provides access to a storage chamber for refrigerated goods inside the body, and with an engine room located at the rear of the carcass receiving machine components for repair or maintenance purposes, but not in the context of everyday use of the device, must be accessed. The machine room is generally substantially cuboid and extends over the entire width of the refrigerator body. He is from a surrounding the storage chamber

heat-insulating foam layer separated by an intermediate wall plate which forms a front and an upper side of the engine room. Around

It is known to fix inner wall panel, made of plastic molded inner

To use wall plates, each filling the end faces of the machine room and the two edges of the bearing chamber facing edges, the edges of the intermediate wall plate receiving grooves. Outer wall panels which form the lateral outer surfaces of the body are angled twice at their lower and rear edges to form U-shapes which receive the two edges of the side members facing away from the bearing chamber. In order to form the U-shapes, the edge length of a blank for an outer wall panel must be significantly larger than the edge lengths of the molded therefrom finished side wall. The structure is therefore reasonably material consuming and

accordingly expensive. In addition, the installation of the components in the

Engine room time consuming.

An object of the invention is to provide a household appliance with a device housing and a machine compartment kept free in the device housing, which can be mounted quickly and efficiently. Another object is to provide a household appliance whose housing is manufacturable with little effort on costly material.

The tasks are solved by a home appliance, in particular

Household refrigerating appliance, comprising a device housing having an outer skin formed of flat material, a free in the device housing,

Machine components receiving engine room and at least one element associated with the engine room, the element is snapped onto at least one edge strip of the outer skin. The element is in particular as a component carrier for at least one of

Machine components and / or formed as a side of the engine room lining wall plate. The element projects in particular into the engine room or limits the engine room. Preferably, the element is simultaneously formed as a wall plate and as a component carrier.

In order to ensure a firm clamping of the element to the edge strip, without having to make high demands on the dimensional stability, it is advantageous if a marginal strip receiving groove of the element is bounded by gaps broken side wall sections, and the side wall sections on one side Each groove opposite gaps on the other side of the groove. Thus, the plugged element, the edge strips in each one alternately in Forcing different directions elastically curved shape to ensure a frictional engagement between the edge strip and the side wall portions on both sides of the groove.

A positive fixing of the element and the edge strip to each other is expediently realized by the element having latching openings of the edge strip engaging latching noses.

In addition, the element may have at least one aligned with an opening of the edge strip screw dome, in addition to the catch and a

To allow screwing of the element to the outer skin.

The outer skin preferably comprises a wall plate which extends over one side of the machine room and a web which is angled away from this wall plate and forms the edge strip to be latched to the element.

Preferably, the web is offset inwardly of an adjacent outer surface of the device housing, so that side wall portions of the element which abut the outside of the web do not necessarily protrude beyond the outer surface and thus can be protected from damage.

Preferably, the element is clamped between the edge strip and a wall of the engine room opposite the edge strip. In the case of a refrigerator, such an opposing wall is generally an intermediate wall plate which separates the machine room from an insulating material layer surrounding a storage chamber. Such an element can be mounted quickly and easily after the partition plate during assembly of the refrigerator. It supports the partition wall plate against the pressure acting on it during the production of the insulation layer by foaming. The pressure in the finished refrigeration device in turn contributes to the tightness of the element. The wall plate and the element may conveniently form a cavity to facilitate the transmission of operating noise from the machine room

Dampen components to the outside. At least one of the components to be accommodated in the machine room is preferably mounted on the element. In particular, this component may be selected from a power distributor, a capacitor, a

Power control circuit for a compressor and a solenoid valve. In addition, two elements arranged on opposite sides of the machine room can jointly carry an evaporation tray and / or a compressor.

Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. From this description and the figures are also features of the

Embodiments, which are not mentioned in the claims. Such features may also occur in combinations other than those specifically disclosed herein. Therefore, the fact that several such features are mentioned in the same sentence or in a different type of textual context does not justify the conclusion that they can occur only in the specific combination disclosed;

instead, it must be assumed that, of several such characteristics, it is also possible to omit or modify individual ones, provided that this is the case

Functionality of the invention is not in question. 1 shows a schematic horizontal partial section through the body of a

Refrigerating appliance according to the invention;

Fig. 2 shows a wall plate provided to line an end face of the engine room of the refrigerator of Fig. 1, in a perspective view as seen from its engine room side;

Fig. 3 is a perspective exploded view of the wall plate of

Fig. 2, seen from its outside, as well as a piece of a molded sheet metal outer skin of the refrigerator body;

Fig. 4 is a schematic longitudinal section through a groove of the wall plate and

locked in edge edge of the outer skin; FIG. 5 shows a top view of a junction box provided for mounting on the wall plate; FIG.

FIG. 6 shows the wall plate, seen from the same perspective as in FIG. 2, with the distribution box mounted on it; FIG. Fig. 7, the wall plate of Fig. 2 with a mounted thereon

Speed control circuit;

FIG. 8 is a perspective view of one of the wall plate of FIG. 2. FIG

opposite part of the engine room according to a first embodiment; and

9 shows a view analogous to FIG. 8 according to a second embodiment.

Fig. 1 shows a horizontal section through the body of a household refrigerator according to the invention. The substantially cuboidal body is subdivided into a storage chamber 1 surrounded by heat-insulating walls 2, 3 and also an essentially cuboid-shaped machine space 4 which extends along a lower rear edge of the body over its entire length. A front part of the body with the door hinged thereto is omitted in the illustration of FIG.

The heat-insulating walls 2, 3 each comprise a foam layer 5, an inner container 6 made of plastic, which separates the foam layer 5 from the storage chamber 1, and outer skin elements 7 or an intermediate wall plate 8, the

Foam layer 5 to the outside, i. to the environment of the device or to

Machine room 4, dress up. The outer skin elements 7 of the lateral walls 2 are formed from sheet metal and each comprise one the entire flank of the body

Covering flat wall plate 9 and a at the rear of the body vertically extending, rectangular from the wall plate 9 angled web 10. A

corresponding web is also angled at the bottom of the wall plate 9, but this is not visible in FIG. Both webs 10 are provided with locking openings not visible in the figure. Two injection-molded plastic inner wall panels 1 1, 14, each lining one of the narrow sides of the machine room 4 are fixed in each case by latching to the latching openings of the two adjacent webs 10. The partition wall plate 8, which limits the machine room 4 to the front of the device and upwards, is located on the two not latched to webs 10 edges of the two inner wall panels 1 1, 14 at. The partition plate 8 may be made of cardboard. The inner wall panels 1 1, 14 carry at their side facing away from the engine room 4 sides adjacent to the partition wall plate 8 a post 12, which keeps a gap 13 between the inner wall panels 11, 14 and the respectively adjacent outer wall plate 9. The intermediate space can be provided empty or with an insulating material for shielding operating noise of the components mounted in the machine room 4.

Between the wall plates 11, 14 extends near the bottom of the machine room 4, an evaporation tray 15. On her a compressor 16 is mounted. A condenser 17, as shown, together with a fan 18 cooling it and the compressor 16, may also be mounted in the engine room 4 or above on a rear wall of the carcass.

Fig. 2 shows the plastic injection molded wall plate 11 in a perspective view. A flat central region 19 is surrounded on all four sides by stiffening ribs or walls. A rib 20, which forms a lower edge region of the wall plate 11, serves as a support for the evaporation tray 15 and the components carried by it and therefore has a framework structure for its stiffening. The top of the rib 20 is contoured, in the case shown here with two recesses 21, to specify the installation position of the evaporation tray 15 unambiguously. A in the perspective of Fig. 2 facing the viewer, in the assembled state of the back of the

Engine room 4 adjacent vertical rib 22 has on its the Zentralbe rich 19 side facing a semicircular recess 23, the function in conjunction with Fig. 5, 6 is discussed in more detail. On a side facing the viewer of the rib 22 wall portions 24 and latching hooks 25 can be seen, which serve to anchor the wall plate 1 1 on the vertical web 10 of the outer skin member 7. 3 shows in an exploded view a part of the outer skin element 7 and the inner wall plate 11. It can be seen here that the wall section 24 extending vertically at half the height of the rib 22 defines a groove 35 together with two horizontal wall sections 26, which is designed to receive the vertical web 10. Further horizontal wall portions 27 are each in the amount of gaps between the vertical wall portion 24 and the

Latch hooks 25 are arranged and project further towards the edge of the wall plate 11 than the wall sections 26. Further projecting wall sections 28 are located beyond the latch hooks 25, respectively. FIG. 4 shows a longitudinal section through the wall sections 24, 26, 27, 28 and the hooks 25 limited groove 35 and the inserted therein web 10. By the far projecting wall portions 27, 28 respectively opposite to the opposite side of the groove, the web 10 can be forced into a slightly meandering shape, despite possible manufacturing tolerances in the width of Groove 35 or the wall thickness of the web 10 ensures a secure frictional engagement.

We continue to see in Fig. 3, the vertical web 10 is provided with a plurality of openings 29, 30. The larger openings 29 are provided to receive in each case a latching nose of a latching hook 25 and so for a positive connection between the

Shell element 7 and the wall plate 1 1 to provide. The smaller openings 30 are in the mounted state in each case screw domes 31 in the wall sections 28 opposite and thus allow additional securing of outer skin member 7 and wall plate 11 to each other by screwing. The vertical web 10 is integrally connected to the wall plate 9 of the outer skin member 7 via a semi-circular protruding hollow rib 36. The projection of the rib 36 via the web 10 corresponds at least to the thickness of the wall sections 24 and

Latching hooks 25 so that they are protected by the rib 36 against damage, e.g. during transport and installation of the refrigerator are protected.

The adjoining the lower edge of the wall plate horizontal web is like the vertical web provided with detent openings, and inside the rib 20 are analogous to the rib 22 wall portions 24, 27 and latching hooks 25 arranged to form a groove in the horizontal bar can be latched. While in the locking hooks 25 of the groove 35, the locking lugs are not visible due to the perspective, the latching lugs 20 are on the latching hook 25 of the rib 20

Clearly visible in Fig. 3, the post 12, which protrudes from one of the rib 22 opposite edge of the wall plate 1 1 from.

Compared to the already mentioned recess 23 of the rib 22 jumps from a along the wall plate 8 extending, the rib 22 opposite

Wall section 32 a flat web 33 before, at the top of a half-round recess 34 is also formed.

The recesses 23, 34 and the intermediate central region 19 form a mounting location for a junction box 38 shown in Fig. 5. The flat parallelepiped junction box 38 has on its lower narrow side an inlet 39 for a (not shown) power cord and over at outlets 40th their upper narrow side cables (not shown) electrical consumers of the refrigerator such as the compressor 16, an interior lighting etc .. The junction box 38 is mounted by two of the lateral flanks of the junction box 38 projecting flat tabs 41, which conventionally for screwing the Distributor box 41 are provided on a base, one is inserted into the recess 34; then the junction box 38 is pivoted against the central region 19 and brought to bear against it, so that the second tab 41 engages in the recess 23. In this position falls one

Screw opening this tab 41 with a screw dome 42 of the wall plate 1 1 (see Fig. 3) together, so that the junction box 38 can be quickly and efficiently fixed with a single screw.

With reference to FIG. 2, a niche 43 is formed on the wall section 32. This niche 43 can receive a capacitor connected in parallel with the compressor 16 to, when a control circuit, not shown, the compressor 16 with voltage to slow down the voltage increase at the terminals of the compressor 16 and to achieve a gentle and quiet start of the compressor 16. The junction box 38 and the capacitor can simultaneously at the

Wall plate 11 to be mounted. Fig. 7 shows the wall plate 11 with a speed control circuit 44 mounted thereon. The speed control circuit 44 is known, so that its structure need not be explained in detail here. Their function is, depending on a measured temperature in the storage chamber 1, the speed (and thus the cooling capacity or the electrical power absorbed) of the compressor 16 to match the actual needs of the storage chamber 1, so that the compressor 16 with at most weakly fluctuating Power can run continuously and turn on and off the

Compressor 16 for controlling the temperature in the storage chamber 1 is not required. The speed control circuit 44 includes high-power transistors, must be able to give off their heat and therefore has not negligible dimensions. Since it controls the power supply to the compressor 16, it can on the one hand be electrically connected to a power cord and on the other hand with the compressor 16 and so take over the function of the junction box 38, on the other hand makes it by at least largely avoiding switching on and off of the compressor 16 will, the above

Capacitor superfluous. It can therefore, by being attached on the one hand to a screw dome 45 of the rib 22 and on the other hand engages the otherwise occupied by the capacitor niche 43 and formed between the niche 43 and the web 33 on the wall portion 32 sockets 46, the other case for the junction box 38 and the condenser required installation space. We in the case of the junction box 38 also allows for the speed control circuit 44, the combination of connector and

Screwing a quick and easy installation. Thus, it allows the wall plate 1 1, depending on the model of the refrigerator different arrangements of

Refrigerating machine components in the engine room 4 space to accommodate. A similar wrinkle can be achieved by means of the opposing inner wall plate 14, as shown in Figs. 8 and 9. Fig. 8 shows the wall plate 14 with two mounted thereon solenoid valves 47, 48, which are needed, for example, to control the distribution of the recirculated refrigerant from the compressor 16 to two different storage chambers of the refrigerator. If the refrigerator has only one storage chamber, or if it has two or more storage chambers, but their evaporator in the

Refrigerant circuit are connected in series, and therefore are not independently acted upon by refrigerant, at least one of the solenoid valves 47, 48 is not needed. The space released by omission of the lower solenoid valve 48 can as shown in Fig. 9, to be there on the edges of the

Evaporating tray 15 to accommodate a latched assembly 49 containing one or two water-carrying valves. These water-carrying valves can be connected on the input side via a connecting piece 50 to a domestic water pipe; On the output side they are connected to a built-in refrigeration unit water tank or with an automatic ice maker to control the water supply to this.

Claims

Domestic appliance, in particular domestic refrigeration appliance, with a device housing, which has an outer skin (7) formed from flat material, one in the

Device housing free, machine components (15, 16, 17, 18, 38, 44) receiving engine room (4) and at least one of the engine room (4) associated element (1 1; 14), characterized in that the element (11; 14) on at least one edge strip (10) of the outer skin (7) is latched.

Domestic appliance according to claim 1, characterized in that the element (1 1; 14) as a component carrier for at least one of the machine components (15, 16, 17, 18, 38, 44) is formed.

Domestic appliance according to claim 1 or 2, characterized in that the element (11; 14) is designed as a side of the machine room (4) lining wall plate.

4. Household appliance according to one of the preceding claims, characterized

characterized in that the element (11; 14) is simultaneously formed as a wall plate and as a component carrier.

5. Household appliance according to one of the preceding claims, characterized

in that a groove (35) of the element (11) receiving the edge strip (10) is interrupted on one side by gaps

Side wall sections (24) is limited, and that the gaps on one side of the groove (35) opposite side wall portions (27) on the other side of the groove (35).

6. Household appliance according to one of the preceding claims, characterized

characterized in that the element (11) in latching openings (29) of the edge strip (10) engaging latching lugs (37).

7. Household appliance according to one of the preceding claims, characterized

in that the element (11) has at least one screw dome (31) aligned with an opening (30) of the edge strip.

8. Household appliance according to one of the preceding claims, characterized

characterized in that the outer skin (7) extends over one side of the

Engine room (4) extending wall plate (9) and the edge strips forming, of the wall plate (9) angled web (10).

9. Household appliance according to claim 8, characterized in that the web (10) is offset against the housing towards an adjacent outer surface of the device housing.

10. Household appliance according to claim 9, characterized in that the wall plate (9) and the web (10) via a projecting towards the outer surface hollow rib (36) are connected.

1 1. Household appliance according to one of claims 8 to 10, characterized in that the element (11, 14) between the edge strip (10) and a the

Edge strip (10) opposite intermediate wall (8) of the engine room (4) is clamped.

12. Household appliance according to one of claims 8 to 11, characterized in that the wall plate (9) and the element (1 1) form a cavity (13).

13. Household appliance according to one of the preceding claims, characterized

characterized in that mounted on the element (11; 14) is at least one component selected from a power distributor (38)

Capacitor, a power control circuit (44) for a compressor (16) and a solenoid valve (47, 48).

14. Household appliance according to one of the preceding claims, characterized

characterized in that two on opposite sides of the engine room (4) arranged elements (11, 14) together carry an evaporation tray (15) and / or a compressor (16).