Dishwasher water inlet control method and dishwasher

Abstract

The invention relates to a water inlet control method for a dishwasher and the dishwasher. By judging whether there is a fault in the motor, and performing emptying of the remaining water when judging that the motor does not have a fault, when judging that the water flow sensor exists When the fault is recorded, detect and judge the fault state of the water flow sensor again, and if it is judged that the water flow sensor is not faulty, the dishwasher will perform normal water intake work, and if the water flow sensor is faulty, it will no longer use the water flow sensor The detected water flow is used as the judging condition for the water intake of the dishwasher, but whether the motor power has a sudden change is used as the judging condition for whether the water level in the dishwasher reaches the preset water volume, and by controlling the continuous opening time of the water inlet valve To control the amount of water injected into the dishwasher, so that when the water flow sensor fails, the dishwasher can still perform normal water inlet work.

Description

technical field [0001] The invention relates to the field of dishwashers, in particular to a method for controlling the water inlet of the dishwasher and the dishwasher. Background technique [0002] Most of the current dishwashers are equipped with water flow sensors, and the controller in the dishwasher controls the motor, water inlet valve and drain valve according to the detection results of the water flow sensor, so as to realize the water inlet process and drainage process of the dishwasher. control. [0003] Chinese invention patent application CN109770811A discloses a method for controlling water inflow and outflow of water equipment, which includes the following steps: setting the time when the motor appears an effective signal during the water inflow process as the water inflow detection time T1; If there is a valid signal of the motor, if yes, it is judged that the water intake is normal, and continue to complete the water intake of the remaining water intake; ...

AI Technical Summary

Problems solved by technology

[0006] First of all, this water inflow control method does not take into account the fact that the effective signal value of the motor caused by different environmental conditions is also different. It simply judges whether the water inflow is normal or not based on whether the effective signal value of the motor appears at the water inflow detection time T1. The resulting results of whether the water intake is normal or not are inaccurate;

[0007] Secondly, in the process of implementing the water inflow control method, there is a situation where the water flow sensor fails

Even if there is a valid signal of the motor at the water inflow detection time T1 and the water inflow of the water equipment is normal, the failure of the water flow sensor will cause the water inflow of the water equipment to be abnormal again, so that the water equipment cannot continue to inflow normally

Obviously, the water inflow control method of the invention patent application CN109770811A does not take into account the adverse effects of the failure of the water flow sensor on the water inflow process of the water equipment, which not only easily causes poor water inflow, but also is difficult to accurately distinguish the water inflow caused by the water flow. Whether the cause is the failure of the motor or the failure of the water flow sensor, which is not conducive to the subsequent maintenance work for equipment failure

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