Drum washing machine and foam detecting method and device used in dewatering of drum washing machine

Abstract

The invention discloses a drum washing machine and a foam detecting method and device used in dewatering of the drum washing machine. The method comprises the following steps of controlling a dewatering motor to run in a first dewatering stage, wherein the first dewatering stage comprises a first maintenance stage; obtaining a maximum water level value h1 of a dewatering barrel in the first dewatering stage, and obtaining a maximum output power value w1 of the dewatering motor in the first maintenance stage; if the maximum water level value h1 of the dewatering barrel is greater than a presetwater level threshold value, controlling the dewatering motor to run in a second dewatering stage, wherein the second dewatering stage comprises a second maintenance stage; obtaining a maximum water level value h2 of the dewatering barrel in the second dewatering stage, obtaining a maximum output power value w2 of the dewatering motor in the second maintenance stage, and calculating the power difference value between the maximum output power value w1 and the maximum output power value w2; if the maximum water level value h2 of the dewatering barrel is greater than the preset water level threshold value and the power difference value is smaller than a preset power threshold value, judging that foam in dewatering of the drum washing machine exceeds the standard.

Description

technical field [0001] The present invention relates to the technical field of washing machines, in particular to a foam detection method during dehydration of a drum washing machine, a non-transitory computer-readable storage medium, a foam detection device during dehydration of a drum washing machine, and a drum with the foam detection device washing machine. Background technique [0002] At present, the drum washing machines of all major brands have the dehydration foam detection and elimination function (abbreviated as defoaming), that is, when the foam in the drum washing machine is detected to exceed a certain level during the dehydration process, it will enter the foam elimination process to avoid foaming. Dehydration causes the problem of foam overflow. [0003] In the related art, the foam detection function of the drum washing machine is to use the water level sensor to detect the water level in the washing machine. When there are too many foams, the water level d...

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Problems solved by technology

[0003] In the related art, the foam detection function of the drum washing machine is to use the water level sensor to detect the water level in the washing machine. When there are too many foams, the water level detected by the water level sensor will be high, but there are also other situations that cause the water level sensor to detect too much foam. When the detected water level is too high, for example, when washing a large amount of clothes or dehydrating clothes with high water content, a large amount of water is squeezed out of the clothes and is not discharged out of the washing machine in time, and the water level detected by the water level sensor will be too high at this time. Thus triggering the defoaming function by mistake

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