EP2449947A2 - Dishwasher - Google Patents

Abstract

The dishwasher (1) has a washing chamber (2), in which washing basket is provided for retaining of washing items. A contact surface (8) is assigned to a basket guiding rail (4), at which the washing basket is mounted along a traverse path in a mobile manner. The basket guiding rail is tilted at a bearing point around a pivoting axis.

Description

The invention relates to a dishwasher, in particular a domestic dishwasher, with at least one washing compartment, in which at least one Spülgutkorb is provided for receiving to be cleaned and / or to be dried items to be loaded and unloading on a tread supporting along a guideway from the Rinsing is retractable and retractable, wherein the tread is associated with a basket guide rail on which the Spülgutkorb is movably mounted along the travel path.

From the US 2005/0150523 A1 a dishwashing machine is known in which a Spülgutkorb via a telescopic rail system out of the washing or out in this is mobile. However, each action of an operator is required to move the Spülgutkorb out of the washing or out into it.

It is therefore an object of the invention to provide a dishwasher, which is more convenient to use.

According to the invention it is provided that the basket guide rail is pivotally mounted at a bearing point about the pivot axis. A lowering of the basket guide rail takes place in that the basket guide rail is pivoted about the pivot axis. This means that a first portion of the basket guide rail, viewed in its longitudinal extent, lowered and a second is raised, whereby the basket guide rail, for example, from its initial position - in which the Spülgutkorb is substantially stable in movement - is displaced into a first pivot position, which corresponds to an extended position , In this extended position, the basket guide rail is pivoted so that the Spülgutkorb automatically exits due to the action of Erdschwerkraft. Of course, it may also be possible to bring the basket guide rail in a second pivot position, in particular a retraction position, in which the Spülgutkorb automatically or at least supported retracts into the washing compartment. By a suitable choice of the pivot axis about which the basket guide rail pivoted is stored, the pivoting of the basket guide rail can be realized with little energy or effort.

Preferably, it is provided that the tread of a z. B. essentially gradient-free neutral position by pivoting about a pivot axis in a slope having an inclination can be brought, in the gravity of the Spülgutkorb extends from the washing room. Thus, z. B. loaded with items loaded Spülgutkorb be pushed in the slope-neutral position with little effort in the dishwasher, while he automatically enters and / or extends in the oblique position due to the gradient.

It is achieved with an automatic retraction and / or extension that the wash basket is completely automatically set in motion, while in a supporting input and / or extension z. B. a breakaway torque must be overcome by an operator to move the Spülgutkorb in motion. It can be provided, for. B. to provide a supportive extension for the extension, that is, an operator must overcome a breakaway moment, while for retraction automatic retraction is provided in which no breakaway torque must be overcome. Of course, another combination is possible. For this purpose, it may be provided that the basket guide rail is pivoted about two different angles. But it can also find the same angle use.

In this case, preferably, the tread is at least partially lowered, in relation to the tread located in a neutral position, which is a substantially, i. within normal manufacturing tolerances, plane, i. Slope-free tread in the use position of the dishwasher is, so it comes in the neutral position of the tread to no gravity-induced movement of the Spülgutkorbs. Thus, a lifting of the entire dishes filled with items to be washed is avoided. This reduces the effort, so that a corresponding drive for displacing the tread can be sized smaller.

There are the basket guide rail and thus also the Spülgutkorb, which is mounted with this extendable and retractable, at least partially lowered. Due to the partial lowering of the basket guide rail a slope is generated, so that the Spülgutkorb can automatically enter or exit due to an effect of Erdschwerkraft. After completing a wash program run, the wash basket is often fully loaded when extended so that its weight, including the weight of the washware placed on the wash basket, is very large. For retracting the wash basket, however, it may well be provided that the basket guide rail is raised, since the cleaned items was removed from the wash basket, so that the Spülgutkorb is now easier. This lifting takes place either to move the basket guide rail from the lowered position after the extension of the Spülgutkorbs back to its original position or even to move the basket guide rail on the starting position in addition to an automatic or at least a supported retraction of the Spülgutkorbs in the dishwasher to realize. Thus, an automatic extension of the Spülgutkorbs, especially after completion of a Spülprogrammdurchlaufs possible, supplemented by an automatic retraction of the emptied Spülgutkorbs.

A development of the invention provides that the basket guide rail has at least at one of its end portions a further, second bearing point. Thus, the basket guide rail in addition to in its central region arranged pivot point on at least one second bearing point. This additional bearing point can either be arranged on its front side, that is to say in the direction of withdrawal in front of the pivot point, and / or its rear end section, that is to say in the direction of withdrawal behind the pivot point of the pivot axis, so that overall a stable construction is provided.

A further development of the invention provides that the pivot point of the pivot axis is arranged in the middle region of the longitudinal extent of the washing compartment in the direction of the travel path of the wash basket. If the wash basket is inserted or retracted into the wash compartment, then the swivel axis or its pivot point is located not only in the middle region of the basket guide rail but also at least approximately at a center of gravity of the wash basket in the longitudinal direction of the guide rail. Therefore, no great effort is required to pivot or lower the basket guide rail, as ideally the system - consisting of basket guide rail and Spülgutkorb with items to be washed - in the inserted into the wash compartment state with respect to the pivot axis in equilibrium. Thus, a particularly low Force required to bring the Spülgutkorb or the basket guide rail in the desired manner in an inclined position, in which by the action of Erdschwerkraft the Spülgutkorb automatically on or extends. After carrying out a rinsing of the dishwasher thus the loaded items can be spent together with the rinsed dishes easily and without too much effort, since the force required to lower or raise the basket guide rail force is relatively low. In order to minimize the force required by an operator to displace the basket guide rail, provision may be made for the basket guide rail to be relocated to the starting position after the wash basket has been extended and unloaded, before the wash basket is loaded with new items to be washed. This can be manually triggered by an operator and effected by means of an actuator which is in operative connection with the basket guide rail. Alternatively, a displacement of the basket guide rail can also be effected manually.

A further development of the invention provides that the basket guide rail, for example, has a roller guide extending along its longitudinal extent, in which at least one fixed axis having a rotation axis is guided, wherein the axis of rotation forms the pivot axis. The pivoting of the Spülgutkorbs on the basket guide rail or the pivoting of the basket guide rail is therefore carried about the axis of rotation of the roller, since the axis of rotation of the roller forms the pivot axis. The role is rotatably mounted on the housing of the dishwasher in the dishwasher. With a suitable displacement of the roller, the basket guide rail is moved from the starting position into one of the pivot positions, so that the entry and / or extension of the wash basket takes place at least partially automatically or supported. Preferably, a plurality, at least two, spaced-apart rollers are provided, which engage in the roller guide. It can be provided that one of the rollers rotatable but stationary, and the other role is displaced. Likewise, of course, both or all roles may be displaced to realize the pivoting or shifting the basket guide rail.

A development of the invention provides that the roller is rotatably mounted on the housing of the dishwasher. The role is, as already stated above, extending in the along the longitudinal extent of the basket guide rail Guided roller guide. In order to allow easy removal of the basket guide rail and thus the Spülgutkorbs, the roller is rotatably mounted to keep the Einbeziehungsweise extension of the Spülgutkorbs required force as small as possible.

A development of the invention provides that a second roller is mounted vertically displaceable on the housing of the dishwasher. The height at which the roller is located, so should be adjustable in relation to the housing. By adjusting the height of the roller, the at least partial lowering of the basket guide rail and also its lifting can be realized. By corresponding displacement of the roller, therefore, the basket guide rail can be displaced at least between the starting position and the at least one pivoting position, in particular the extended position. The pivoting takes place in this case so that the roller relative to the housing shifted in height, so for example lowered or raised, is.

It is preferably provided that the second roller is arranged in the direction of the Vorführwegs spaced by a minimum distance to the stationary roller, so that a lowering is possible by changing the position of the second roller. The minimum distance may be a multiple of the diameter of the first or second roller.

A development of the invention provides that the pivoting, in particular the tilting of the basket guide rail or the vertical displacement of the roller, by means of at least one actuator, in particular a servo motor and / or an electromagnet, takes place. The tilting of the basket guide rail is achieved in particular by the at least partially lowering. With the actuator, the tilting of the basket guide rail or the vertical displacement of the roller can be realized entirely without effort by the user of the dishwasher. For retracting and / or extending the wash basket, therefore, the basket guide rail or the roller is first displaced accordingly by means of the actuator, so that a gradient results, due to which the wash basket moves out of the wash compartment in relation to it. The actuator can be formed for example by the servo motor and / or the electromagnet. These can be integrated in an advantageous manner in the housing of the dishwasher. A control of the actuator via a control and / or regulating device. This is for example with a control unit in connection, via which the user of the dishwasher can initiate the entry and / or extension of the dish rack in or out of the washing compartment. The control panel is already provided on the dishwasher, for example, for a choice of a wash program.

A further development of the invention provides that a Spülgutkorbbewegung caused by the tilting of the basket guide rail is braked by means of at least one eddy current brake and / or a Gasdruckdämpfereinrichtung and / or a hydraulic damper device. The basket guide rail is thus braked by means of a braking device. The braking device can have the eddy current brake, the gas pressure damper device or the oil pressure damper device. With the braking device prevents the Spülgutkorb, especially the loaded Spülgutkorb, in an undesirable manner when retracting or extending at too high a speed on an end stop or a stop element bounces. This could potentially result in undesirable damage to the items being washed on the wash basket. The braking device reduces the speed of the incoming or outgoing Spülgutkorbes and thus reduces its pulse. In this way, an excessive impact or impact on the stop element or on the housing of the dishwasher is prevented.

A development of the invention provides that the Spülgutkorb is designed as a top basket or cutlery drawer, the cutlery drawer, for example, to accommodate lying cutlery such. As knives, forks or spoons is formed. This means that the wash basket is not arranged directly above a bottom of the dishwasher dishwasher. Rather, the upper basket is offset from the ground provided. In addition to the upper basket, additional items to be washed or a cutlery drawer may be assigned to the dishwasher. A Spülgutkorb designed as a lower basket can be arranged in the region of the bottom of the interior. The upper basket or baskets are positioned vertically above the lower basket (if provided).

Figur 1

eine Geschirrspülmaschine mit einer verschwenkbaren Korbführungsschiene,

Figur 2

eine Prinzipdarstellung der Korbführungsschiene, wobei zwei Schwenkpositionen dargestellt sind, und

Figur 3

eine Darstellung einer verstellbaren Rollenhalterung.

In a further development it is provided that the tread is at least partially raised. This allows, in addition to z. B. an extension movement out of the washing out and also a retraction movement into the washing or vice versa to effect, so a completely automatic retraction and extension of a Spülgutkorbs from a washing compartment of a dishwasher without effort on the part of an operator is possible. Further, the invention includes a basket guide rail for a dishwasher according to the invention, which may be designed as a household dishwasher. The invention will be explained in more detail below with reference to the embodiments illustrated in the drawing, without causing a restriction of the invention. Show it:

FIG. 1

a dishwasher with a pivotable basket guide rail,

FIG. 2

a schematic representation of the basket guide rail, wherein two pivotal positions are shown, and

FIG. 3

a representation of an adjustable roll holder.

The FIG. 1 shows a dishwasher 1, which is formed in the present embodiment as a household dishwasher. The dishwasher 1 has a washing compartment 2 which is at least partially surrounded by a housing 3 of the dishwasher 1. The FIG. 1 shows that the washing compartment 2 has an opening to the front, which can be closed with a door or flap, not shown here. In the washing compartment 2 at least one Spülgutkorb is arranged. To accommodate or guide the Spülgutkorbs, the dishwasher 1 basket guide rails 4, which are telescopically formed in the present embodiment and at the same height on inner walls 5 of the washing compartment 2 are arranged opposite each other. The basket guide rails 4 are mounted by means of two rollers 6 mounted on the inner walls 5. The rollers 6 engage in a roller guide 7 of the basket guide rail 4 and abut against at least one leg of a C-shaped profile of the basket guide rail 4 and the roller guide 7 at. The rollers 6 are spaced from each other, so that the basket guide rail kippfest is held in relation to the rollers 6. The rollers 6 are rotatable on the inner wall 5 stored. Thus, the roller guide 7 can be displaced in its longitudinal direction in relation to the rollers 6, so off along a travel path from the washing compartment 2 and retracted into this. The basket guide rail 4 is thus guided displaceably on the rollers 6.

The roller guide 7 has at least one running surface 8, on which the wash basket is also arranged to be displaceable in the longitudinal direction of the basket guide rail 4. In the illustrated embodiment, two treads 8 are provided, wherein one of the treads 8 above and the other of the treads 8 is disposed below the C-shaped profile of the basket guide rail 4. On these running surfaces 8, the Spülgutkorb example, associated with him roles (also not shown) are kept displaced. The roles of the Spülgutkorbs encompass the basket guide rail 4, so that one of the rollers with the upper tread 8 and another of the rollers with the lower tread 8 comes into operative connection. In this way, the Spülgutkorb is secured against removal or accidental fall off.

At least at its front end, the basket guide rail 4 on a stop element 9, which serves as Wegbegrenzer. In the FIG. 1 It can be seen that a corresponding stop element (not designated here) is also provided at the rear end. Thus, an arrangement of the crockery basket, in which both the crockery basket in the longitudinal direction of the basket guide rail 4 with respect to this is displaceable, and the basket guide rail 4 with respect to the housing 3 of the dishwasher results in 1. It is usually provided that upon extension the Spülgutkorbs from the washing compartment 2 first the Spülgutkorb is displaced in relation to the basket guide rail 4 until a region of the Spülgutkorbs (for example, its roles) with the stop element 9 in contact. From this point, a further moving out of the Spülgutkorbs from the washing compartment 2 causes a displacement of the basket guide rail 4, while the Spülgutkorb is not moved in relation to this.

The FIG. 2 shows the basket guide rail 4 in the washing compartment 2 of the dishwasher 1, wherein the basket guide rail 3 is shown for clarity in duplicate, namely as a basket guide rail 10 in a first Pivoting position and as a basket guide rail 11 in a second pivot position. The first pivot position can also be referred to as the extended position and the second pivot position as the retracted position. An intermediate starting position, in which the basket guide rail 4 is in a substantially horizontal position, is not shown here, but the FIG. 1 removable. In the presentation of the FIG. 2 It can be seen that the basket guide rails 10 and 11 are mounted on the housing 3 by means of the rollers 6. In this case, a front roller 12, which faces a Spülraumöffnung 13, and a rear roller 14, which is facing away from the Spülraumöffnung 13, is provided. In this case, the front roller 12 is rotatably supported stationary, while the second rear roller 14 is adjustable in height, but also rotatably mounted on the housing 3.

By adjusting the height of the second roller 14, the basket guide rail 4 can be pivoted. If the second roller 14 is displaced upward, then the basket guide rail 4 is in the first pivot position, ie in the form of the basket guide rail 10. If, on the other hand, the second roller 14 is displaced downwards, then the basket guide rail 4 pivots upward, so that it is present in the second pivoting position in the form of the basket guide rail 11. A pivot axis 15 about which the pivoting of the basket guide rail 4 takes place is at the same time a rotation axis 16 of the stationary roller 12. The height displacement of the second roller 14 so the basket guide rail 4 is pivoted about the pivot axis 15 so that the running surfaces 8 is no longer substantially normal to be a vector of gravity. Therefore, gravity causes a displacement of the Spülgutkorbs either from the washing compartment 2 out (in the presence of the first pivot position) or into it (in the presence of the second pivot position). The height displacement of the second roller 14 is effected by means of an actuator 17 which, for example, as an electric motor 18 (for example via a spindle drive, not shown) or as an electromagnet (not shown) or electromagnet assembly may be formed.

Preferably, a braking device 20 (not shown in detail here) is provided at ends 19 of the basket guide rail 4. The braking device 20 may be formed, for example, as an eddy current brake, gas pressure damper device or oil pressure damper device or at least include such. The braking device 20 is used to brake the Spülgutkorbs with respect to the basket guide rail 4, so that a Stopping the Spülgutkorbs, for example, on the stop element 9, which in the

FIG. 1 is shown, is prevented at too high a speed. This means that the braking device 20 respectively reduces a relative speed of the wash basket to the basket guide rail 4 at least in the region of the ends 19, so that the speed and thus the pulse of the wash basket is reduced before contact between a region of the wash basket and the stop element 9. In this way, damage to the basket guide rail 4, the Spülgutkorbs and arranged on the Spülgutkorb items to be avoided.

In the pivot positions, the basket guide rail 4 or form the treads 8 from an inclined plane 21, on which the Spülgutkorb either in the flushing chamber 2 into or out of this can get out. Alternatively, the front roller 12 may be adjustable in height, while the rear roller 14 is stationary but rotatably mounted. In such an embodiment, it is advantageous that the first pivot position, ie the extended position, can be achieved by lowering the first roller 12. This is also possible with a fully loaded Spülgutkorb with little effort. For a retraction of the Spülgutkorbs in the washing compartment 2 of the dishwasher 1, however, the roller 12 is displaced upwards, so that the second pivot position is present. This is usually done when the wash basket has been unloaded after extension. Thus, the energy consumption is relatively low also in this process.

The FIG. 3 shows the washing compartment 2 of the dishwasher 1 without the in the FIGS. 1 and 2 Instead, a roller holder 22 can be seen, on which the rollers 6 are rotatably mounted, by means of which the basket guide rail 4, not shown here, is displaceably held. The roller holder 22 is designed so that in turn the rear roller 14 is height adjustable, so the axis of rotation 16 of the front roller 12, the pivot axis 15 of the basket guide rail 4 and the roller holder 22 forms. This means that an end region 23 of the roll holder 22 pointing into the washing compartment 2 is height-adjustable. The roller holder 22 pivots total about the pivot axis 15, resulting in a simplified construction of the dishwasher 1 by a higher degree of freedom in the choice of the attack position of the actuator 17, not shown here on the roll holder 22. Of course, as stated above, possible, the front roller 12 höhenverlagerbar and the rear roller 14 to arrange stationary. Alternatively, both rollers 12 and 14 may be vertically displaceable, this being preferably provided in opposite directions. In this case, it is advantageous if the pivoting of the roller holder 22 is provided about its center in the axial direction. If both rollers 12 and 14 are displaceable in their height, then the actuator 17 is assigned to the roller holder 22 and not to the rollers 6.

Claims (15)

Dishwasher (1), in particular household dishwasher, with at least one washing compartment (2), in which at least one wash basket is provided for receiving items to be cleaned and / or to be dried, which can be loaded and unloaded on a running surface (8). supporting and retractable along a travel path out of the washing compartment (2), wherein the running surface (8) is associated with a basket guide rail (4) on which the wash basket is movably mounted along the travel path, characterized in that the basket guide rail (4) at a bearing point about a pivot axis (15) is pivotable. Dishwasher according to claim 1, characterized in that the tread (8) by pivoting about the pivot axis (15) can be brought into a slope having a slope in the gravitational force of the Spülgutkorb from the washing compartment (2) and / or extends. Dishwasher according to claim 1 or 2, characterized in that for changing the inclination of the running surface (8), the running surface (8) is at least partially lowered. Dishwasher according to claim 3, characterized in that the basket-executing rail (4) has a second bearing point at least at one of its end portions. Dishwasher according to one of the preceding claims, characterized in that the pivot point of the pivot axis (15) in the central region of the longitudinal extension of the washing compartment (2) is arranged in the direction of the travel path. Dishwasher according to claim 3, 4 or 5, characterized in that the basket guide rail (4) has a roller guide (7) which at least a stationary roller (12) having an axis of rotation (16), wherein the axis of rotation (16) forms the pivot axis (15). Dishwasher according to claim 6, characterized in that the roller (12) on the housing (3) of the dishwasher (1) is rotatably mounted. Dishwasher according to claim 6 or 7, characterized in that a second roller (14) for guiding the basket guide rail (4) on the housing (3) of the dishwasher (1) is mounted vertically displaceable. Dishwasher according to claim 8, characterized in that the second roller (14) in the direction of travel by a minimum distance spaced from the stationary roller (12) is arranged. Dishwasher according to one of the preceding claims, characterized in that an actuator (17) is provided, by means of which at least a partial lowering of the travel path is effected. Dishwasher according to claim 10, characterized in that the actuator (17) with the basket guide rail (4) is in operative connection. Dishwasher according to claim 11, characterized in that the actuator (17) with a second roller (6) is in operative connection. Dishwasher according to one of the preceding claims, characterized in that a Spülgutkorbbewegung caused by the pivoting means of at least one eddy current brake and / or a Gasdruckdämpfereinrichtung and / or a hydraulic damper device is braked. Dishwasher according to one of the preceding claims, characterized in that the running surface (8) is at least partially liftable. Basket guide rail (4) for a dishwasher, in particular for a domestic dishwasher according to one of claims 2 to 14.

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