Patent ID: 7566398

Claim:
A water filtering device comprising: a case having a water inlet port and a water discharge port; an inner cylinder disposed in the case and providing a space between the case and the inner cylinder filled with an ion exchange resin so that water entering through the water inlet port is ion-bonded and discharged through the discharge port; a partitioned cylinder disposed between the case and the inner cylinder partitioning the space into an inner space toward the inner cylinder and an outer space toward the case, wherein the inner space and the outer space are each filled with the ion exchange resin; an upper cap including a center air hole, said upper end cap being detachably fitted on an open upper part of the case; wherein the case has a first fitting groove formed around a front end of the discharge port, the first fitting groove having a diameter larger than the second fitting groove; wherein a second fitting groove is formed around the center air hole in the upper end cap; ring shaped packing members formed of soft rubber or soft synthetic resin inserted in the first and second fitting grooves to prevent leakage; and, wherein upper and lower ends of the inner cylinder are detachably fitted into the first and second fitting grooves, respectively.