Water leakage detecting apparatus of water purifier

A water purifier, comprising:

• a filtering section adapted to be connected to a source of water under pressure for purifying water received therefrom;
• a water storage tank for storing purified water;
• a conduit connecting the water storage tank to the filtering section for conducting purified water from the filtering section to the water storage tank;
• an electrically actuated valve for terminating a supply of purified water to the water storage tank;
• a first sensor for detecting a maximum allowed water level in the tank and emitting a first signal indicating that water has reached the maximum allowed level;
• a water discharge hole formed in the storage tank for discharging excess water from the storage tank when the water level exceeds the maximum allowed level;
• a water drainage conduit arrangement defining a drainage passage communicating with the discharge hole and being normally open for conducting-away the excess water, the conduit arrangement including means permitting backed-up water in the passage to flow out of the passage in the event of the passage becoming clogged;
• a pan arranged to collect the backed-up water flowing out of the passage;
• a second detector for detecting the presence of water in the pan, the second detector emitting a second signal indicating the presence of water in the pan;
• a controller connected to the valve and to the first and second detectors, for closing the valve in response to receipt of either of the first and second signals;
• and
• a visual display and an audio alarm both connected to the controller to be activated thereby in response to the controller receiving the second signal.