Dishwasher fault detection method

Abstract

The invention discloses a dishwasher fault detection method. The method comprises the following steps: S1, starting a washing program; S2, using a control unit to obtain a vibration signal, detected by a vibration detection unit, of a spraying arm; and S3, analyzing the collected vibration signals to obtain frequency domain information of the vibration signals, comparing the obtained frequency domain information of the vibration signals with a preset value, and judging whether the spraying arm rotates abnormally or not. According to the technical scheme, the vibration time domain signal transmitted by the spraying arm / rotating cage in the cavity of the dishwasher is obtained through the vibration detection unit, the time domain signal is converted into the frequency domain signal through the control unit, the frequency domain information of the obtained vibration signal is compared with the preset value, and then whether the spraying arm / rotating cage breaks down or not is judged; and therefore, a user can be reminded of abnormal working of the dishwasher in time, the user can find reasons and solve problems in the shortest time, and the influence on user experience and a tableware cleaning effect is avoided.

Description

technical field [0001] The invention belongs to the field of washing equipment, and in particular relates to a fault detection method for a dishwasher. Background technique [0002] At present, several types of dishwashers in the dishwasher industry, whether it is a cabinet machine, a desktop machine, a built-in dishwasher or a MINI desktop dishwasher and a sink dishwasher, are mainly sprayed. Rinse and clean the dishes. The general implementation method is: the washing pump supplies water to the spray arm through the pipeline, and many small holes are opened on the spray arm, and the water is sprayed from the spray arm holes to wash the tableware. The angle of inclination can drive the spray arm to rotate itself while spraying water, so as to spray water while rotating, so that the bowls in the entire washing machine can be washed. However, the speed of the spray arm has a great influence on the spraying of the water during the rotating water spraying process, and directl...

AI Technical Summary

Problems solved by technology

However, the speed of the spray arm has a great influence on the spraying of the water during the rotating water spraying process, and directly affects the washing effect; due to the limitation of the working environment of the spray arm, the spray arm is easily damaged by chopsticks, forks, etc. during work. The tableware is blocked and does not rotate; or a spray hole on the spray arm is blocked by food residue, causing the spray arm to rotate slowly; the above situations will cause the tableware to be washed uncleanly

[0003] Therefore, it is necessary to improve the deficiencies and defects of the prior art, and provide a device that can promptly remind the user that the dishwasher is working abnormally when the spray arm of the dishwasher is stuck due to mechanical reasons during operation. The reason is that the spray arm is stuck and stopped, so that users can find the cause and solve the problem in the fastest time, avoiding the dishwasher spray fault detection method that affects the user experience and tableware cleaning effect

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