Washing machine and control method of washing machine with circulating water filtering system

Abstract

The invention provides a washing machine and a control method of a washing machine with a circulating water filtering system. The washing machine comprises a filtration assembly, a water purification circuit and a flow path on-off device, wherein the filtration assembly is arranged to conduct filtration on water drained from a washing cylinder of the washing machine in a controllable mode, the water purification circuit is arranged to make filtration production water flowing out of a water producing port of the filtration assembly recycled back to the washing cylinder to be reused, and the flow path on-off device is arranged to control on and off of the water purification circuit. According to the washing machine and the control method of the washing machine with the circulating water filtering system, due to the fact that on and off of the water purification circuit are controlled, the problem that washing water enters a fine filter of the filtration assembly to pollute a filter membrane or membrane silk of the fine filter is avoided, and reliable operation of the fine filter is guaranteed.

Description

technical field [0001] The invention relates to a washing machine, in particular to a washing machine with a circulating water filtering system and a control method thereof. Background technique [0002] A laundry routine of conventional washing machines usually includes water intake, washing-spin-drying-drainage, multiple rinsing-spin-drying-drainage, etc., wherein washing and each rinse need to consume a large amount of clean water. The water used for washing or rinsing is discharged to the environment outside the washing machine through the drain pipe. The whole washing process consumes a lot of water, which greatly wastes water resources. [0003] In order to achieve the purpose of saving water in washing machines, the prior art generally adopts the following schemes to treat laundry wastewater: [0004] Solution 1: Add a water storage tank to the washing machine to collect rinse water, and set a filter to simply filter the collected rinse water and apply it to the nex...

AI Technical Summary

Problems solved by technology

However, because the rinsing water has many impurities and the water quality is unstable, the solution 1 cannot really solve the water quality problem of the rinsing water

Moreover, this solution usually requires manual cleaning of the water storage tank and filter screen, which is inconvenient for maintenance

[0009] Option 2 uses a reverse osmosis filter to purify laundry wastewater, which not only requires the use of a high-pressure pump, but also has a slow purification rate, and the water output is difficult to meet the normal use requirements of the washing machine

In addition, this solution requires regular replacement of the reverse osmosis filter, which is costly

[0010] Option 3 uses large-scale water treatment devices and auxiliary equipment such as ozone generators to purify laundry wastewater. These auxiliary equipment are not only expensive in themselves, occupy a large space, but also require many supporting devices and related cleaning devices, further greatly increasing equipment costs and maintenance. cost, totally unsuitable for ordinary household use

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