Method and device for detecting abnormity of drainage pipeline

Abstract

The invention relates to the field of kitchen appliances, in particular to a method and device for detecting abnormity of a drainage pipeline. The method for detecting the abnormity of the drainage pipeline comprises the steps of controlling a first preset time when water is drained from a dish washing machine, and detecting the first drainage amount within the first preset time; according to thefirst preset time and the first preset drainage amount, determining the drainage speed; according to the first drainage amount, and/or according to the drainage speed and the theoretical drainage speed of the drainage pipeline, determining the blockage state of the drainage pipeline. The method and device can accurately detect whether the drainage pipeline is blocked or not in time, and thereforethe phenomenon that sewage cannot be drained smoothly when the drainage pipeline is blocked is avoided.

Description

technical field [0001] The invention relates to the field of kitchen appliances, in particular to a method and device for detecting abnormality of a drainage pipeline. Background technique [0002] At present, there are two types of drainage control in the dishwasher industry: one is motor pump drainage, which removes the sewage inside the dishwasher through the motor pump; the other is gravity drainage, and some sink dishwashers on the market completely drain through the sewage itself Gravity drained. [0003] However, the residue during the washing process of the dishwasher will also be discharged along with the sewage. Whether it is the gravity drainage method or the motor pump drainage method, the drainage pump and control valve in the drainage pipeline of the dishwasher may be blocked by the residue. , pipeline corners, etc. At the same time, the abnormality of the drainage pump and other components will also cause the drainage pipeline to block, which will lead to the...

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Problems solved by technology

[0003] However, the residue during the washing process of the dishwasher will also be discharged along with the sewage. Whether it is the gravity drainage method or the motor pump drainage method, the drainage pump and control valve in the drainage pipeline of the dishwasher may be blocked by the residue. , pipeline corners, etc. At the same time, the abnormality of the drainage pump and other components will also cause the drainage pipeline to block, which will lead to the following problems: During the washing process, because the sewage cannot be discharged, when the water continues to enter, the water inside the dishwasher will Overflow and may flood the kitchen; at the end of washing, the internal residue and dirt cannot be removed in time, so after a period of time, it will produce peculiar smell and breed bacteria, seriously affecting user experience and hygiene safety

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