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Method for operating a washing machine having an electrochemical sensor and washing machine

An electrochemical and sensor technology, used in the control device of washing machines, other washing machines, household appliances, etc., can solve the problems of signal distortion of the sensor, poor signal of the sensor, and the lack of analyzable processing.

Active Publication Date: 2017-11-28
BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The signal of the sensor can be distorted and, when the aqueous liquid to be measured is not sufficiently smooth and / or there is too much foam in the aqueous liquid, the signal of the sensor can only be poorly or generally not recognized. analysis processing
Especially when the impedance sensor is used as an electrochemical sensor, this can lead to no analytically manageable results

Method used

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  • Method for operating a washing machine having an electrochemical sensor and washing machine

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Embodiment Construction

[0078]The washing machine 1 of the drawing has a lye container 2 in which a drum 3 is rotatably mounted and can be driven by a drive motor 5 . In order to achieve improved ergonomics, the axis of rotation 19 of the drum 3 is oriented upwardly and frontally at a small angle (eg 13°) from the horizontal, so that the user of the washing machine 1 can reach and see inside the drum 3 more easily. In addition, this arrangement also achieves a counter-use of the washing lye in cooperation with the laundry carrier 14 on the inner surface of the drum shell and the suction device 17 for the aqueous liquid containing detergent, for example the washing lye 7 . 7 Intensification of soaked laundry 4. In the embodiment shown here, the laundry carrier 14 is asymmetrical, so that for the two possible directions of rotation of the drum 3 the lye container 2 is The aqueous liquid 7 in moves with different ranges of action (Ausmaβ). This influence is taken into account in the control unit 8 so ...

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Abstract

The invention relates to a method for operating a washing machine (1), comprising a container (2), a drum (3) for accommodating laundry items (4), a drive motor (5) for the drum (3), an electrochemical sensor (9) in the container (2) for measuring an electrochemical signal in dependence on a composition of an aqueous liquid (7) in the container (2), and a control device (8), wherein the following steps are performed: (a) providing a detergent-containing aqueous liquid (7) in the container (2); (b) rotating the drum (3) in accordance with a predetermined motion program; (c) ending rotational motion of the drum (3) and allowing the detergent-containing aqueous liquid (7) to rest until a specified calmed state of the detergent-containing aqueous liquid (7) is achieved; and (d) measuring the concentration cten of a detergent in the detergent-containing aqueous liquid (7) provided in step (a) by recording and evaluating electrochemical signals of the electrochemical sensor (9) by using a relationship between electrochemical signals and detergent concentrations, which relationship is stored in the control device (8). The invention further relates to a washing machine (1) suitable for performing the method.

Description

technical field [0001] The invention relates to a method for operating a washing machine with an electrochemical sensor and a washing machine suitable therefor. The invention relates in particular to a method for operating a washing machine having a container, a drum for receiving laundry, a drive motor for the drum, a water-based liquid in the container for determining and in the container ( Flüssigkeit) electrochemical sensors for composition-dependent electrochemical signals, and control devices, and to a washing machine suitable for carrying out the method. Background technique [0002] In washing machines, the laundry is usually treated in a washing phase for cleaning with a washing lye containing detergent. Furthermore, after a rinsing phase with water in which washing lye and / or contaminants are removed in or on the laundry, the laundry is usually treated with a softener. Here, for reasons of cost and environmental protection, it makes sense to use optimal amounts ...

Claims

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Application Information

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IPC IPC(8): D06F39/00D06F33/02D06F35/00D06F33/32D06F34/22
CPCD06F34/22D06F2105/48D06F2103/04D06F2103/46D06F2103/20D06F2105/58D06F2105/60D06F2103/18D06F33/32D06F2101/06D06F2103/24D06F2103/06D06F2101/04
Inventor D·奥里希A·比朔夫M·穆尼科H·绍布
Owner BSH BOSCH & SIEMENS HAUSGERAETE GMBH
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