Method for monitoring water-charging process and water-discharging process of washing machine

Abstract

The invention discloses a method for monitoring the water-charging process and water-discharging process of a washing machine. The method comprises the following steps: in the water-charging process or water-discharging process, a computer board reads the water level frequency once after a set period of time; and if the water level frequency is not changed compared with the last water level frequency and the set total times of reading and the total time water level frequency are not changed, a water-charging overtime alarm or the water-discharging overtime alarm is executed. Every time when the computer board reads the water level frequency, the water level is compared with a preset water level to judge whether to reach the preset water level; if so, the water-charging process is stopped or the water-discharging process is started; if not, the water level frequency is compared with the next water level frequency to judge whether the water level frequency is charged; and the preset water level is the washing water level or empty water level. By adopting the method of the invention, the changes of the water level can be detected dynamically in the water-charging process or water-discharging process to judge whether the water-charging or water-discharging state is normal; and when the water-charging or water-discharging state is abnormal, the water-charging process or water-discharging process is stopped and the user is informed through the alarm.

Description

technical field [0001] The invention relates to a water inflow and outflow method for a washing machine, in particular to a water inflow and outflow monitoring method for a washing machine capable of judging in real time whether the water inflow and outflow is normal. Background technique [0002] The current water inlet control of washing machines mostly adopts the method of directly entering water from the water inlet valve to the set water level. If the water pressure is low or the user forgets to turn on the faucet, an alarm will be issued at the set water inlet control time, such as 15 minutes or 30 minutes. The time can be changed according to the model. Although this method is simple, the control of the water intake process is relatively rigid. If the water pressure is too low, such as in rural areas or areas with insufficient water supply pressure and places that use water tanks for water supply, it will If the set water intake time, such as 15 minutes or 30 minutes,...

AI Technical Summary

Problems solved by technology

[0006] The above method judges whether the water intake is appropriate by comparing the actual water intake time with the set parameters of the set water intake time. However, this test is a fixed test. If the water pressure is in an unstable state, the test result will have a large error

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