DE3931031C2 - Collecting pot of a dishwasher with a sieve combination - Google Patents

Description

The object of the invention relates to a collecting pan of a dishwasher with a Sieve combination consisting of individual sieves, such as coarse sieve, fine sieve and, if necessary, very fine sieve, the sieves being fixed individually and / or together in the collecting pot.

From DE 36 26 351 A1 is a dishwasher with a fixable in the pan zelsieben known, which has a sensor device that when washing dishes The degree of contamination of the circulated rinsing liquid is monitored. Depending on the measurement result this sensor device causes a rinsing liquid change or not. If the Degree of pollution a predetermined value, for example, the dirt-laden Pumped off liquid and controlled a fresh water supply. The well-known However, the device does not sense the cause of the washing water pollution disturbance in the water cycle of the device, but only gives its effect in form of a pressure drop in the circulated rinsing liquid or its change in turbidity.

From DE 37 32 451 A1 it is also known in a dishwasher, the function monitor the rotating spray arms. Here a sensor generates from the revolutions the spray arms have a pulse train, which signals a signal when the process is disturbed or interrupted device can respond and interrupts the ongoing rinsing process. A disrupted process is characterized, for example, by the blocking of a spray arm. With this flushing machine It is to be regarded as a disadvantage that the operator only notices the error sam is done after the rinsing process has already started.

In dishwashers of the aforementioned type with individual sieves that can be fixed in the collecting pot ben it is generally known, the two suction chambers for the drain pump and the circulation pump through a fine mesh sieve, this can be a fine sieve, for example, in shape to separate from cylindrical sieve bodies or the like. The fine sieve is a separating sieve usually with its lower sieve rim in the transition to the intake manifold of the Lau gene pump close to the collection pan so that the circulation pump does not contain any dirt during operation chen from the dirt collection room of the drain pump back into the circulation pump room can suck. In a known sieve construction (see DE 24 51 822) the sealing effect achieved, for example, by a float valve which controls the flow of rinsing solution  allowed in the lye drain, but blocks the reverse flow in circulation mode. This ensures that residual dirt is sucked back out of the sump of the collection pot avoided.

However, the previously known sieve designs prevent dirt particles from being sucked back do not come out of the lye pump suction chamber if, for example, the sieve combination manual inspection or sieve cleaning incorrectly in the  Collecting pot is inserted or is not properly locked. Due to the faulty vertical, horizontal or too tangential seat of the sieves becomes one for larger dirt particle permeable and constantly open gap between the pump suction spaces created by what dirt particles are sucked back, which inevitably leads to a poor washing result.

The invention has for its object a monitoring to create facility that the operator on an error in the filter system of the household appliance makes and / or if necessary intervenes in the machine program.

The object is achieved by the invention the features of claim 1.

Advantageous embodiments of the invention are shown in the Sub-claims emerge.

The advantages achieved with the invention are particular to see that a consistently good rinse result can be achieved since constant monitoring the correct filter sieve position is given.

The description below serves to explain the Object according to the invention, of which an execution example is shown graphically.

The shown in the figure with a rinsing container of a dishwasher, not shown, connected to the bottom of the collecting pot ( 1 ) has a sieve combination ( 2 ) which is detachably fixed in the collecting pot ( 1 ). The sieve combination ( 2 ) consists of several individual sieves, of which a fine sieve ( 3 ) separates the collecting bowl space from the washing container space, not shown.

A coarse sieve ( 4 ) is inserted in the center of the fine sieve ( 3 ), while a fine sieve ( 5 ) is arranged in the collecting pot ( 1 ) concentrically with the coarse sieve ( 4 ). The fine sieve ( 5 ) can be connected in one piece with the fine sieve ( 3 ) and separates the collection pot ( 1 ) into a suction chamber ( 6 ) for the circulation pump and a suction chamber ( 7 ) for the drain pump.

The sieves ( 3 to 5 ) are assigned a sensor device ( 8 ) monitoring their position and location in the collecting pot. A signal device (not shown) and / or the program sequence of the dishwasher can be influenced via the sensor device ( 8 ). The sensor device ( 8 ) monitors both vertical and tangential and / or horizontal incorrect fit of the screens ( 3 to 5 ) or the screen combination ( 2 ). The seat of the fine strainer ( 5 ) separating the collecting pot ( 1 ) into the two suction spaces ( 6 , 7 ) should preferably be monitored, for which purpose a permanent magnet ( 8 a) and outside ( 5 a ) at the lower end of the fine strainer ( 5 ) dry part) on the collecting pot ( 1 ) an assigned sensor or switching element ( 8 b) is provided. The switching or sensor element ( 8 b) can be realized by a reed contact or a Hall element and is connected upstream of the already mentioned electrical or electronic signaling device and / or the program control in order to visually or acoustically signal to the device operator that the screening system is incorrectly seated and / or that Interrupt the washing program or not start it. According to the exemplary embodiment, only a permanent magnet ( 8 a) and an associated sensor / switch ( 8 b) are provided. However, it is also possible to use several such devices separately, for example for each filter screen.

Expediently, the switching element or sensor ( 8 b) can be preceded by a magnetically conductive yoke for bundling the magnetic flux, as a result of which safe switching is ensured even in the case of a very unfavorable sieve position in the event of a fault. Each incorrect fit of the sieve (s ) ( 2 to 5 ) results in an undesirably large gap between the fine sieve and the collecting pot ( 1 ), which is displayed or exerts an influence on the program.

Claims (5)

1. collecting pot of a dishwasher with a sieve combination consisting of individual seven, such as coarse sieve, fine sieve and possibly fine sieve, the sieves individually and / or together in the collecting pot can be fixed, characterized in that the sieves ( 2 to 5 ) at least one whose seat in the collecting pot ( 1 ) monitoring sensor device ( 8 ) is assigned, through which a signal device and / or the program run of the device can be influenced in the event of a faulty fit of the screening system. 2. Collecting pot according to claim 1, characterized in that the sensor device ( 8 ) monitors the vertical, tangential and / or horizontal incorrect fit of the screens ( 2 to 5 ), in particular the fine screen ( 5 ) and from a screen ( 2 to 5 ) attached permanent magnet (a) and from a magnet opposite sensor element ( 8 b) on the collecting pot ( 1 ), which is connected to the signaling device and / or to the program control. 3. Collecting pot according to claim 1 and 2, characterized in that the sensor element ( 8 b) on the outside of the collecting pot ( 1 ) and arranged by a reed contact, a Hall element or the like. Realized. 4. Collecting pot according to claims 1 to 3, characterized in that the switching element (b) is preceded by a magnetically conductive yoke for bundling the magnetic flux from the permanent magnet ( 8 a). 5. Collecting pot according to one of claims 1 to 4, characterized in that in the event of an incorrect fit of the sieve (s ) ( 2 to 5 ) an optically or acoustically perceptible error signal is generated by the signaling device and / or the program run of the machine is stopped or prevented or is interrupted.