Dish-washing machine drainage detection method and drainage detection device thereof

Abstract

The invention discloses a dish-washing machine drainage detection method and a dish-washing machine drainage detection device. The dish-washing machine drainage detection method comprises the steps that a dish-washing machine starts to execute a water inlet program, water inlet is started after drainage of execution time t, the situation that a water inlet parameter reaches a preset water level isdetected, the detected water inlet parameter is compared with a preset value, and the drainage fault situation is judged. The method is convenient and reliable, can accurately judge and grasp whetherdrainage of the dish-washing machine is finished or not, and further can accurately judge whether the dish-washing machine has a drainage fault or not.

Description

technical field [0001] The invention belongs to the field of electrical appliances, and in particular relates to a washing machine drainage detection method, and also relates to a drainage detection device applying the detection method. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for the quality of life, so the requirements for product quality, performance, humanization and intelligence of operation are also higher and higher. As an excellent product, dishwashers have become increasingly popular and used by consumers. At present, the dishwasher judges the water level by setting a float switch or a water level sensor in the dishwasher to control the water level during the water intake or drainage stage, and then detects the drainage failure. In the prior art, there are mainly two methods for detecting drainage faults of dishwashers: [0003] The first one is to install a pressure detection device in the ...

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Problems solved by technology

[0006] In the first method, because the installation of the pressure detection device needs to be connected, an air cavity needs to be set in the inner tank of the dishwasher, and a pressure switch and a pressure sensor need to be added at the same time, and the computer board needs to be equipped with a related detection interface, which leads to this problem. The cost of this method is high, and the inner tank needs to be opened separately, which increases the hidden danger of water leakage

[0007] In the second method, since a float switch needs to be installed inside the dishwasher, a detection device and corresponding components are added to the dishwasher. In the inner tank of the dishwasher, it is necessary to increase the space for placing components such as the float device at the sink and other components, increasing the Reduce water consumption and energy consumption, and reduce the space in the inner tank, compress the washing capacity of the dishwasher

[0008] In both methods, corresponding hardware devices need to be added, the installation cost is high, the space is large, and the structure is complicated

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