| 摘要 |
A water level sensing system of a water purifier is provided to improve accuracy of measuring results of the water level sensing system by allowing a water level sensor to measure accurately electric capacity of a purified water tank. In a water level sensing system for sensing a water level in a purified water tank(100) of a water purifier, the water level sensing system comprises: a water level sensor(150) which is installed on a surface of a case for the purified water tank to sense a water level of purified water by measuring electric capacity of the purified water tank; and a joining part for joining the water level sensor with the case surface of the purified water tank such that the water level sensor is closely adhered to the case surface of the purified water tank, wherein the joining part pressurizes the water level sensor from an outer side of the water level sensor. The joining part includes joining holes(141-144) formed in the case surface of the purified water tank, and joining members(170) joined with the joining holes through the water level sensor. The joining holes are formed in at least one of both end portions of the water level sensor, and a central portion of the water level sensor. The case surface of the purified water tank has a plurality of reference lines(130) formed thereon at positions where the joining holes are to be formed such that the reference lines cross each other.
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