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Method for operating a washing machine with foam detection by motor current analysis and washing machine suitable therefor

A washing machine and foam technology, applied in the field of washing machines, can solve problems such as rising and exceeding

Active Publication Date: 2019-09-10
BOSCH SIEMENS HAUSGERATE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the pressure signal measured by the sensor increases with increasing rotational speed, so that the predetermined pressure threshold for foam detection is exceeded prematurely.

Method used

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  • Method for operating a washing machine with foam detection by motor current analysis and washing machine suitable therefor
  • Method for operating a washing machine with foam detection by motor current analysis and washing machine suitable therefor
  • Method for operating a washing machine with foam detection by motor current analysis and washing machine suitable therefor

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Experimental program
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Embodiment Construction

[0093] figure 1 The washing machine 1 has a washing liquid container 2 in which a drum 3 is rotatably mounted and can be driven by a drive motor 5 . For improved ergonomics, the rotation axis 19 of the drum 3 points forward and upward at a small angle (eg 13°) from the horizontal, making it easier for the user of the washing machine 1 to reach and observe the inside of the drum 3 . In addition, with this arrangement, in interaction with the laundry carrier 14 on the inner surface of the drum shell and the suction device 17 for the aqueous liquid 7 containing detergent, for example washing liquid, also The intensification of the through-flow of the washing liquid 7 through the laundry 4 is realized.

[0094] Furthermore, the washing machine 1 has a washing liquid filling system comprising a water connection for the house water network 20, an electrically controllable valve 21 and an inlet line 13 to the washing liquid container 2, optionally also through the washing liquid. ...

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Abstract

The invention relates to a method for operating a washing machine 1 with a washing liquid container 2, a drum 3 for receiving laundry 4, a drive motor 5 for said drum 3 and a control device 8, wherein by means of said The drum rotation time period Δt of the drive motor 5 n During the measurement and analysis of the drive current value IA measured to detect the presence of suds in the washing phase WP, in such a way that, in the absence of suds, for the drive current value IA A First measure the reference value I ref And make it with the washing phase driving current value I measured next in the washing phase WP A WP Correlation, wherein, by comparing it with the number a predetermined for the washing phase WP, the correlation x=I due to the presence of foam A WP / I ref Analytical processing is carried out, wherein, at a predetermined time Δt 设置 After that, only during the drum rotation period Δt n During measuring drive current value I A .

Description

technical field [0001] The invention relates to a method for operating a washing machine by means of foam detection by evaluating the current of a drive motor of the washing machine and a washing machine suitable therefor. The invention relates in particular to a system for operating a A method for a washing machine with a drum containing laundry, a drive motor and a control device for the drum, and also a washing machine suitable for carrying out the method. Background technique [0002] In washing machines, the laundry is generally treated in a washing phase for cleaning with a washing liquid containing detergent. In addition, after a rinsing phase with water in which washing liquid and / or soiling in or on the laundry is removed, the laundry is often decontaminated with the aid of a water softener. deal with. Here, it makes sense for cost reasons as well as for environmental reasons to use laundry treatment agents (especially detergent and water softener) the optimal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06F39/06D06F34/22
CPCD06F39/06D06F34/22D06F2103/04D06F2103/46D06F2103/20D06F2105/58D06F2105/60D06F2103/18D06F2101/04
Inventor 史怡春
Owner BOSCH SIEMENS HAUSGERATE GMBH