Apparatus for detecting remaining amount of detergent in washing machine

Abstract

The present inventive concept relates to an apparatus for detecting the remaining amount of detergent in a washing machine, wherein the apparatus detects the remaining amount of detergent filled in a detergent tank and provides information about the number of washing cycles available afterwards. The apparatus for detecting the remaining amount of detergent in a washing machine comprises: a pair of electrode sensing means installed in a detergent tank to be impregnated with detergent; and a control unit that supplies current to the pair of electrode sensing means, extracts the remaining amount of detergent by using a change in electrical characteristics measured between the pair of electrode sensing means according to the level of the detergent, and provides the remaining amount of detergent to a display unit, wherein at least one of the pair of electrode sensing means is composed of a resistance electrode rod, and the resistance electrode rod is composed of an electrode rod formed of a single material having a certain resistance or an electrode rod formed of a composite material that is obtained by mixing an insulating material and a conductive material and has a certain resistance.

Dependencies are inferred from the claim text.