WO2010081638A2

WO2010081638A2 - Dishwasher

Info

Publication number: WO2010081638A2
Application number: PCT/EP2009/068028
Authority: WO
Inventors: Julia Hörsch; Cengiz Kücük; Manfred Seessle
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2009-01-14
Filing date: 2009-12-30
Publication date: 2010-07-22
Also published as: DE102009000211B4; WO2010081638A3; DE102009000211A1

Abstract

The invention relates to a dishwasher, in particular a household dishwasher (1), having a wash container (2) for receiving dishes to be cleaned, having a base carrier (8) for carrying the wash container (2), and having a catch pan (14) for leaking water formed on the base carrier (8), wherein a lower edge (11) of the wash container (2) contacts a surface (13) formed on the base carrier (8) and facing upward. The surface (13) facing upward is designed as a leaking water guide surface (13) extending from one end area (21) of the edge (11) to the other end area (22) of the edge (11), and designed so that leaking water striking the water guide surface (13) is guided in the direction of the catch pan (14).

Description

dishwasher

The present invention relates to a dishwasher, in particular a domestic dishwasher, with a washing container for receiving items to be cleaned, with a base support for carrying the washing and a trained on the base support drip tray for water leakage, wherein the washing container formed with a lower edge on one of the base support and upwardly facing surface.

Relative terms such as "top" and "bottom" refer to the position that the dishwasher occupies when used as intended.

Common dishwashers have a box-shaped washing container, which serves to receive the items to be cleaned during a rinse cycle. The washing container is typically composed of sheet metal parts and has a rear wall, a top wall, a bottom wall and two side walls. Such a washing container has on the opposite side of the rear wall a feed opening, which can be closed by an example pivotally mounted door, so as to obtain a closed rinsing chamber for rinsing to be cleaned rinsing container.

It is customary to store the washing container on a base support. For this purpose, the base support has a guide arrangement into which the washing container is inserted from above during assembly of the dishwasher. The base support in many cases comprises a closed rectangular frame extending along the outside of the dishwasher.

Inside this frame, a substantially flat drainage trough for leakage water is provided in a lower area. The Leckwasserauffangbe- area of the drip pan comprises a substantial part of the base of the dishwasher. Thus, it is possible to collect by means of the collecting trough leak water, which is caused by any leaks in water-bearing components, which are arranged above the drip pan. In particular, Re arranged water pumps, water heaters and water valves above the drip pan, which is why these leaking leak water can be collected directly.

It is known to assign the collecting trough a leak water detection device, which includes a leak water sensor and a control part. This makes it possible for measures to be taken automatically when leakage water occurs. Thus, for example, the water supply can be switched off in the household appliance, leaked drain water, shut off the water heater and / or an alarm signal can be triggered. In this way, a flood and the resulting consequential damage at the installation of the dishwasher can be largely avoided or completely prevented. Likewise, fires that could be caused by a dry running heater and / or short circuits can be avoided.

In a known dishwasher, a lower portion of the base support is offset inwardly at the rear, since there is a connection device for fresh and waste water on the outside of this section of the base support. This structure is therefore chosen so as to avoid protruding the connection device beyond the back of the dishwasher. As a result, however, is conditional that the sump can not extend to below the rear edge of the washing. The rinsing container of this known dishwasher is mounted in its rear region along its lower edge on an upwardly facing surface of the base support, which extends above the connection device. Thus, the rinse tank towers over the leak water collecting area of the drip pan on its rear side. If leakage water leaks out of the washing container in the area of the rear wall, it flows downwards on the rear wall outside and flows off uncontrollably over the surface facing upwards.

A disadvantage of this known dishwasher is that leaking water occurring at the back of the washing container can escape from the dishwasher. In addition, since such leakage water leakage through the Leckwassererfas- Detection device is not detectable, larger floods and corresponding consequential damage may occur.

The object of the present invention is to provide a dishwasher, in which leakage of leakage water, which occurs in a rear region of the washing compartment outside the leak water collecting area of the collecting trough, is improved improved.

The object is prevented in a dishwasher of the type mentioned above in that the upwardly facing surface is formed as a leak water guide surface which extends from one end of the edge to the other end of the edge and which is designed so that on the Wasserleitfläche impinging water leakage directed in the direction of the drip tray.

The fact that the Leckwasserleitfläche extends from one end of the edge to the other end of the edge, it is ensured that leaking water, which exits at a wall extending above the edge of the washing, due to its gravity always trickles or drips on the Leckwasserleitfläche. It is irrelevant whether the leak water exits in a left, a right and / or in a central region of the Spülbehälterwand.

Since the water guide is designed so that such incident leakage water is directed in the direction of the sump, it is safely avoided that such leakage of water leaking from the dishwasher. An enlargement of the drip pan and thus the Leckwasserauffangbereiches, which would be structurally feasible only with great effort, not necessary. Since the leak water is nevertheless conducted into the collecting trough, this can also be detected by the leakage trough safety device associated with the collecting trough so that protective measures can be carried out automatically. As a result, consequential damage to the dishwasher or at the installation of the dishwasher can be safely prevented.

According to an advantageous development of the invention, an outer section of the leak-water guiding surface extending parallel to the edge is inclined so that it is located there. fendes leakage water is directed transversely to the edge in the direction of an inner side of the Leckwasserleit-. By such an inclination of the outer portion of the leak water guiding surface is ensured in a simple manner that the leak water flows in the direction of the center of the device. The inclination is preferably between 5 ° and 15 °. For example, an inclination of 10 ° ensures that the leak water is directed to the center of the appliance even when the dishwasher is set up with a slight inclination, which is very common in practice. Nevertheless, a relatively high design effort in the design of the base support as well as a significantly increased material expenditure can be avoided by the comparatively moderate inclination.

According to a preferred embodiment of the invention, a water guide arrangement is provided between an inner longitudinal side of the Leckwasserleitfläche and the sump. The water supply arrangement can be, for example, an extension of a side wall of the collecting trough, which extends to the inside of the leak water guide surface. However, it is also conceivable a water supply assembly, which comprises a pipe and / or a line, which extend from a lowest point of the water guide into the drip pan.

According to an expedient development of the invention, the Leckwasserleitfläche extends further outward, as an adjoining above the edge wall of the washing container. Walls of a washing container are usually made of a sheet metal part, which has a profiling to increase its stability. This profiling may include an outward facing camber. If leakage of water occurs on such a profiling or curvature, it can not be ruled out that the leak water running on the outside of the wall will detach from the wall and drip vertically downwards. The proposed design of Leckwasserleitfläche the leak water can be safely directed into the sump in this case.

According to a preferred embodiment of the invention, a recess is provided on the part of the washing container resting on the leak-water guiding surface and / or on the leak-water guiding surface itself, in particular a slot, preferably a slot Longitudinal slot provided, which, in particular which, forms an opening for leakage water. In this way it is possible to transport even larger amounts of leakage water from an outer longitudinal region of the leak water guide surface to an inner longitudinal region of the leak water guide surface. It is therefore not necessary to direct the leak water outside on the overlying part of the washing container along and around its corners inwards. In this way, the outside of the Leckwasserleitfläche incident leakage water can be performed virtually without detour in the direction of the drip pan.

According to a preferred development of the invention, the edge resting on the leak-water guide surface is formed on a substantially vertically oriented standing flange. At such a Stehflansch openings for leakage water can be formed in a particularly simple manner. So can be provided on the resting on the Wasserleitfläche edge of the Stehflansches punched or cutouts, which form the passages.

According to an expedient development of the invention, an upstanding on the Leckwasserleitfläche limiting element is provided which limits the Leckwasserleitfläche frontally. In this way it can be avoided that leaking onto the Leckwasserleitfläche leaking water flows uncontrollably over the end faces of the Leckwasserleitfläche. As a result, flooding by leak water in particular can be avoided if it exits in large quantity at the transition of the wall rising above the edge to another wall.

According to an advantageous embodiment of the invention, the limiting element is a fastening element for securing the washing container to the base support. The end regions of the edge, along which the washing container is mounted on the base support, are framed in common dishwashers by fastening elements formed on the base support. It is easily possible to reshape such a fastener so that it prevents the frontal leakage of leakage water as a limiting element. In this way, the structural design of the dishwasher can be kept simple. According to a preferred development of the invention, an end-side region of the leak-water-guiding surface is inclined in such a way that any water leaking there is discharged in the longitudinal direction of the edge from the front side to a central region of the edge. As a result, in many cases it is possible to dispense with an end-face delimiting element without the danger of leakage water leaking out of the dishwashing machine via the end face of the leakage water guide surface being produced. However, such an inclination of the frontal area may also be provided in combination with a limiting element. Such a tendency favors the rapid removal of leaking water.

According to a preferred embodiment of the invention, the drip pan is associated with a leak water safety device. A Leckwassersicherheitseinrich- device includes in particular a sensor for detecting leakage water. For this purpose, for example, a float can be used with a switch operated by him. The leak water safety device may have a control part which is designed to control components of the dishwasher.

In summary, it can be stated that in the case of known dishwashers no possibility was provided of passing any leakage water occurring in the region of the washing machine rear wall into the leak water collecting trough, so that such leakage water can escape from the dishwasher. This results in the task of creating a dishwasher, in which escaping water is always passed into the leak water collection tray.

Advantageously, the leak water collecting trough is assigned a safety system which stops the water flow when leakage water occurs.

In an advantageous embodiment of the invention, the washing compartment is provided with a standing seam on a base support. Thus, the water running along the edge of the container runs down on a defined surface on the base support. The outer surface portions are designed so that they are in particular approximately 10 ° obliquely towards the center of the device. This ensures that even with a tilt of the complete device of, for example, 2 ° the water always running inside the device. Here the water is directed so that the float of the safety system is actuated.

The invention and its developments are illustrated and explained in more detail below with reference to drawings. Each show schematically:

1 is a highly schematic side view of an advantageous embodiment of a dishwasher according to the invention,

Figure 2 is a plan view of the dishwasher of Figure 1, as well

FIG. 3 shows a partial spatial view of the dishwasher of FIGS. 1,

Second

Elements with the same function and mode of operation are each provided with the same reference numerals in FIGS.

1 shows a schematic side view of an advantageous embodiment variant 1 of a dishwasher according to the invention, in particular domestic dishwasher. Only those components of the dishwasher 1 are shown and provided with reference numerals, which are necessary for the understanding of the invention.

The dishwasher 1 has a box-shaped washing container 2, which has a rear wall 3, a top wall 4, a bottom wall 5 and two side walls 6. The rinsing container 2 is composed of a plurality of corrosion-resistant sheet metal parts, wherein a first sheet metal part forms the rear wall 3 and a further sheet metal part the top wall 4, the bottom wall 5 and the two side walls 6. The two sheet metal parts are connected to each other for example by welding or gluing. At the rear wall 3 opposite side of the washing container 2, a charging opening 7 is provided, which is closable by a door, not shown. The washing container 2 is arranged on a base support 8 made of plastic. In order to attach the washing container 2 to the base support 8, a feed side bearing assembly 9 and a rear bearing assembly 10 are formed on the base support 8. The charging-side bearing assembly 9 comprises two sections, each of which is arranged on a lower charging-side region of one of the side walls 6. In contrast, the rear bearing assembly 10 is formed so that the washing container 2 along a lower edge 1 1, which forms the transition from the rear wall 3 to the bottom wall 5, rests with an outside of the washing container 2 arranged Stehflansch 12 on an upwardly facing surface 13 ,

In a lower region of the base support 8 a collecting trough 14 is formed for leak water, which is lower than water-bearing components in the so-called technical space of the base support 8 below the bottom wall 5 of the washing compartment 2. The drip pan 14 is enclosed by frame-like arranged side portions of the base support 8. The rear side of the frame portion of the base support 8 is offset inwardly from an upper part of the rear side of the base support 8 so as not to project a terminal device 15 disposed at the lower portion beyond the rear boundary of the base support 8. For this reason, the rear wall 3 and the adjoining region of the washing container 2 projects rearwardly beyond the collecting area of the collecting trough 14. Thus, the drip pan 14 initially allows to absorb leaking water, which in the so-called technical room, in particular in a rear region of the washing, between the sump 14 and the bottom wall 5 of the washing container 2 on water-bearing components, such as pumps, heaters or water-bearing lines, exits. Likewise, leakage water can be collected by the collecting trough 14, which originates from a front region or from a central region of the washing container 2. This leakage water is guided by a corresponding shaping of the collecting trough 14 to a schematically illustrated leakage water safety device 16.

The leak water safety device 16 includes a leak water sensor, which may include, for example, a switch actuated by a float. Furthermore, the leak water safety device 16 comprises a control part, which is designed to automatically initiate action when leakage occurs. Possible measures include, for example, closing the water supply, pumping out leaking water, switching off a heating device and / or interrupting the power supply to electrical components of the dishwasher 1 endangered by the leakage water.

In order to prevent leakage of leakage water, which occurs in the region of the rear wall 3, and in order to be able to activate the leak water safety device 16 in this case too, the upwardly facing surface 13 of the base support 8 is designed as a leak water guide surface 13. It has an outer longitudinal portion 17 which is inclined towards the center of the device. As a result, outside of the washing container 2 downwardly running or dripping leak water is discharged to the device center across the edge 1 1. The water is then conducted under the standing flange 12 or around it to the inside of the leak water guide surface 13.

On the inside of Leckwasserleitfläche 13, a water guide assembly 18 connects, which directs the leak water into the sump 14. In the embodiment of Figure 1, the water supply assembly 18 is designed as a strongly sloping guide surface 18. Depending on the design conditions, however, differently designed water supply arrangements could be provided. In order to prevent leak water from flowing off uncontrollably to the outside via the end faces of the leak water guide surface 13, delimiting elements 19 projecting upwards on the water guide surface 13 are provided on both lateral and lateral end faces.

FIG. 2 shows the dishwasher 1 of FIG. 1 in a plan view. It can be seen clearly in FIG. 2 that the leak-water guide surface 13 extends from the first end region 21 of the edge 11 to the second end region 22 of the edge 11.

The rear wall 3 has an outwardly directed curvature 20, which serves to reinforce the rear wall 3 designed as a deep-drawn part. The Leckwasserleitfläche 13 extends further outward than the outermost region of the curvature 20 of the rear wall 3. In this way, it is ensured that at the vault 20 completely outside leaking leak water also strikes the Wasserleitfläche 13. Seen in the depth direction of the washing container, the rear end edge of the Leckwasserleitfläche 13 against the bulge 20 of the rear wall 3 further forth.

In this way, leaking water leaking at the rear wall 3 can always be collected, regardless of which region of the rear wall 3 the leak water occurs. The water guide surface 13 and the water guide assembly 18 always ensure that even at the rear end of the washing container 2 occurring leak water is safely passed into the sump 14.

Figure 3 shows a partial spatial view of the dishwasher 1, wherein a portion of the washing container 2 and a part of the base support 8 in the end region 21 of the edge 11 is shown. The limiting element 19, which prevents water leakage via the end face of the leak water guide surface 13, is designed as an upwardly open hollow profile.

A wall 23 of the delimiting element 19 facing the washing container 2 has a slot 29 which extends parallel to the upstanding lower edge 11 of the rear wall 3, ie in the transverse direction of the washing container. In these so the Stehflansch 12 of the rear wall 3 is inserted from above. One of the container-side wall 23 opposite wall 24, which is shown cut, is formed over the entire surface. Likewise, side walls 25 and 26 are formed over the entire surface, so that leakage of water from the hollow profile to the outside is not possible. The arranged in the interior of the hollow section 27 of the Wasserleitfläche 13 is inclined so that it drops in the longitudinal direction of the edge 1 1 to the center of the device. In this way, water leakage from the frontal region 27 of the Leckwasserleitfläche 13 is transported through the slot 23 of the wall. In the spatial representation of Figure 2, the sloping inward inclination of the outer portion 17 of Wasserleitfläche is clearly visible. In order to be able to derive in such a way from the outside against the back wall 3 flowing water in larger quantities to the inside, at the edge 11, a passage opening 28 is formed. Instead of this, for example, a longitudinal slot may be provided which extends over a partial length of the edge 1 1. LIST OF REFERENCE NUMBERS

Dishwasher Rinse tank Rear wall Top wall Bottom wall Side wall Feed opening Base carrier Charging side bearing arrangement Rear bearing arrangement Lower edge Stehflansch upwardly facing surface, Leckwasserleitfläche Drip tray Connection device Leakage water safety device outer, longitudinal section of the Leckwasserleitfläche Water guide arrangement Limiting element Curvature End area End area Spülbehälterseitige wall Outer wall Outer wall Outer wall Frontal area recess, passage slot

Claims

claims

1. Dishwasher, in particular domestic dishwasher (1), with a washing container (2) for receiving items to be cleaned, with a base support (8) for carrying the washing container (2) and with a base support (8) formed collecting trough (14) for Leakage water, wherein the rinsing container (2) with a lower edge (11) on a base support (8) formed and upwardly facing surface (13), characterized in that the upwardly facing surface (13) as Leckwasserleitfläche (13) is formed, which extends from one end portion (21) of the edge (1 1) to the other end portion (22) of the edge (1 1), and which is formed so that on the water guide surface (13) incident water leakage in the direction of Drip tray (14) is passed.

2. Dishwasher according to the preceding claim, characterized in that an outer, parallel to the edge (1 1) extending portion (17) of the Leckwasserleitfläche (13) is inclined so that there incident leakage water transversely to the edge (1 1) in the direction of an inside the Leckwasserleitfläche (13) is passed.

3. Dishwasher according to one of the preceding claims, characterized in that between an inner longitudinal side of the Leckwasserleitfläche (13) and the collecting trough (14) is provided a water guide assembly (18).

4. Dishwasher according to one of the preceding claims, characterized in that the Leckwasserleitfläche (13) further extends to the outside than an above the edge (1 1) subsequent wall (3) of the washing compartment (2).

5. Dishwasher according to one of the preceding claims, characterized in that on the on the Leckwasserleitfläche (13) resting edge (11) and / or on the Leckwasserleitfläche (13) has a recess (28), ins- special a slot, is provided, which forms a passage opening (28) for water leakage.

6. Dishwasher according to one of the preceding claims, characterized in that the at the Leckwasserleitfläche (13) resting edge (11) is formed on a substantially vertically aligned Stehflansch (12).

7. Dishwasher according to one of the preceding claims, characterized in that on the Leckwasserleitfläche (13) upstanding boundary element (19) is provided which limits the Leckwasserleitfläche (13) end face.

8. Dishwasher according to claim 7, characterized in that the limiting element (19) at least one fastening element (19) for fixing the washing container (2) to the base support (8).

9. Dishwasher according to one of the preceding claims, characterized in that an end-side region (27) of the Leckwasserleitfläche (13) is inclined so that there incident leakage water in the longitudinal direction of the edge (11) from the respective end side of the Leckwasserleitfläche (13) is derived ,

10. Dishwasher according to one of the preceding claims, characterized in that the collecting trough (14) is assigned a Leckwassersicherheitseinrich- device (16).