Water purification apparatus of fuel cell generation system

A water purification apparatus of a fuel cell generation system, which refines water generated as a result of electric power generation in a fuel cell to produce pure water, comprising:

• a bottomed cylindrical container tank;
• a lid member for fluid-tightly closing an opening portion which opens upward of the container tank;
• an upper filter which is disposed at an upper portion of a container space formed from the container tank and the lid member, and which forms an upper space between the lid member and the upper filter;
• a lower filter which is disposed at a lower portion of the container space, and which forms a lower space between a bottom portion of the container tank and the lower filter;
• a water passage pipe which passes through the upper filter and the lower filter, and which is disposed substantially at a center of the container tank to establish a communication between the upper space and the lower space;
• and
• an ion-exchange resin which is loaded in a space defined by the container tank, the upper filter, the lower filter, and the water passage pipe,
• wherein the lid member has a water supply channel for supplying the water to the upper space, and an overflow channel which connects to the water passage pipe,
• a first discharge channel for discharging the pure water in the container tank to outside is connected to the lower space,
• the water passage pipe is imperforate and provides an unobstructed passage from the lower space to the upper space,
• the cylindrical container tank includes an annular tank portion located below the lower filter, the first discharge channel extends through the annular tank portion into the lower space, and a second discharge channel for discharging the pure water which is different from the first discharge channel extends through the annular tank portion into the lower space.