Control Method Of Washing Machine

Abstract

In a control method of a washing machine, a primary nephelometric turbidity unit (NTU) of washing water is sensed (S160) before a washing course is started in a washing cycle, a second NTU is sensed (S160) based on the primary NTU (N1), and a washing time, an amount of washing agent, and/or a number of times (S200, S210, S220) of rinsing are varied based on a difference value between the primary NTU (N1) and the secondary NTU, thereby improving washing performance and washing efficiency.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2016-0066791 filed May 30, 2016, which is hereby incorporated by reference as if fully disclosed herein. technical field [0002] The invention relates to a control method of a washing machine. Background technique [0003] Recently, as disclosed in the following prior art, there is a method of improving the rinsing efficiency of laundry by appropriately adjusting the number of times of rinsing or the rinsing time by detecting the turbidity of washing water during the rinsing process. [0004] However, in the case of such conventional washing machines, a control method for setting washing conditions by detecting turbidity has not yet been adopted. Therefore, after the laundry is put in, the washing process will be executed according to the washing conditions selected during the laundry amount detection process. [0005] Therefore, in the state where the degree of contamination of the laundry is no...

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Problems solved by technology

[0005] Therefore, in the state where the degree of contamination of the laundry is not accurately detected, the amount of detergent, the amount of washing water, and the number of times of rinsing corresponding to the preset pollution degree conditions will be selected and the washing process will be executed. The problem of being able to wash laundry better

[0006] For example, when the degree of pollution of the laundry is low, putting in too much detergent and washing water and performing too many rinse cycles will not only result in waste of detergent and washing water, but also cause delays in washing time

[0007] On the other hand, when the degree of contamination of the laundry is high, a significantly small amount of detergent and wash water are injected, which may cause a problem that the laundry cannot be washed well

[0008] For such problems, only by detecting the turbidity of the washing water during the rinsing stroke to adjust the number of rinsing times or the rinsing time cannot be solved.

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