Washing machine and control method thereof

Abstract

The invention relates to a washing machine, which comprises a first flow passage and a second flow passage. The first flow passage and the second flow passage can in on-and-off communication with an external water supply pipeline and a washing drum of the washing machine. An optimization device for water quality optimization is arranged on the first flow passage which is provided with a flow ratecontrol device, and the flow rate control device is positioned at an upstream position of the optimization device and used for controlling the inflow rate. The invention further relates to a control method of the washing machine. The control method includes an executable first water inlet scheme and an executable second water inlet scheme. The first water inlet scheme includes that inflow water issubjected to water quality optimization treatment prior to being fed into a washing drum; the second water inlet scheme includes that inflow water is directly fed into the washing drum, and when water is fed into the washing machine and the first water inlet scheme is executed, the inflow rate before water quality optimization treatment is controlled according to inflow water quality. By controlof the inflow rate before water quality optimization treatment according to inflow water quality, up-to-standard water quality of water flow flowing out of the optimization device is guaranteed, and water inflow time is shortened.

Description

technical field [0001] The invention relates to a washing machine, and also relates to a control method of the washing machine. Background technique [0002] Hard water will reduce the efficiency of the detergent. When the laundry water contains cations such as divalent calcium ions and magnesium ions as water hardening components, these calcium ions and magnesium ions will react with the surfactant in the detergent to form insoluble metals. Soap, reduces the amount of surfactants that are good for laundry and reduces stain release. Clothes washed in hard water look dark and sloppy, and feel rough and stiff to the touch. Divalent calcium ions, magnesium ions, and dirt combine to form insoluble salts that make stains more difficult to remove. And the dirt on the clothes introduces more invisible minerals into the wash water, making the water harder. Washing clothes in hard water can also damage the fibers of the garment, reducing the life of the garment by up to 40%. [0...

AI Technical Summary

Problems solved by technology

Divalent calcium ions, magnesium ions and dirt combine to form insoluble salts, making stains more difficult to remove

[0004] However, the above method simply allows tap water to pass through the resin and then flows into the washing tub, but does not effectively monitor the softening process and the state of the resin. Among them, the softening effect is related to the flow rate of tap water flowing through the softening module. If a fixed flow rate is used, It will make the tap water with high hardness unable to fully soften, and the tap water with low hardness will prolong the water intake time

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