Water level sensing apparatus, water supply hose and washing machine having the same

Abstract

The present invention provides a water level sensing apparatus, a water supply hose and a washing machine having the water level sensing apparatus. The water level sensing apparatus is capable of more precisely sensing a level of supplied water. The water level sensing apparatus includes: a main body provided with an inner wall and an outer wall and filled with water supplied to the inside of the inner wall; a plurality of electrodes inserted between the inner wall and the outer wall to be opposite to each other; and a micro-computer to judge a water level in the main body through variation of a capacitance value of the plurality of electrodes. Therethrough, the water level sensing apparatus more directly measures a water level, as compared to the conventional water level sensing apparatus, thus improving precision in water level measurement. Thereby, the water level sensing apparatus prevents unnecessary water supply and reduces energy consumption.

Description

technical field [0001] Embodiments relate to a water level sensing device for sensing a water level of supplied water, a water supply hose, and a washing machine having the water level sensing device. Background technique [0002] Generally, in the operation of the washing machine or the dishwasher, the water level or the amount of water supplied to the washing machine or the dishwasher is important. For example, in the case of a washing machine, it is necessary to supply an amount of water corresponding to the amount of laundry to be washed in order to perform efficient washing. That is, when the amount of water supplied is smaller than the amount corresponding to the amount of laundry to be washed, washing cannot be efficiently performed, and when the amount of water supplied is larger than the amount of water corresponding to the amount of laundry to be washed, a large amount of water is consumed unnecessarily and excessively consumes a large amount of electricity due to...

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned conventional water level sensing device is repeatedly driven by mechanical operation and thus has low durability

In addition, conventional water level sensing devices operate by receiving air pressure, and the water level varies greatly due to changes in the volume inside the hose as well as changes in air density, thus unnecessarily wasting water and electricity

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