Water purification filter easily replaced by connector and water purification system using the same

A water purification filter easily replaced by a connector, comprising:

• a connector including an inflow hole through which external feed water flows in, a check valve body in which a check valve installed to open/close a feed water flowing path for guiding feed water from the inflow hole to a filter side is formed and a concentrated water discharge path is formed outside the check valve, and an outflow hole for externally discharging water purified by a filter;
• a filter housing for housing a reverse osmosis membrane filter, and opening the feed water flowing path by opening the check valve in connection with the connector;
• a locking means installed in the connector, for detachably fixing the filter housing to the connector;
• a passage switching guide being installed at the upper portion of the filter housing, and having a first path for supplying feed water to the reverse osmosis membrane filter from the feed water flowing path opened when the filter housing is connected to the connector, a second path for supplying water purified by the reverse osmosis membrane filter to the outflow hole, and a third path for supplying concentrated water from the reverse osmosis membrane filter to a concentrated water discharge path;
• a double-tube type connection tube installed on the outflow hole, for externally discharging purified water passing through the second path through a purified water path formed at the center in the length direction, and externally discharging concentrated water passing through the third path and the concentrated water discharge path through a concentrated water path formed outside the purified water path;
• and
• a concentrated water discharge tube linked to the concentrated water path of the connection tube, and branch-connected to the rear portion of the connection tube in the right angle direction, for externally discharging concentrated water.

A water purification filter easily replaced by a connector, comprising:

• a connector including an inflow hole through which external feed water flows in, a check valve body for housing a check valve elastically installed to open/close a feed water flowing path for guiding feed water from the inflow hole to a filter side, and an outflow hole for externally discharging purified water;
• a filter housing for housing one of the water purification filters such as a sediment filter, an activated charcoal filter and a hollow fiber filter, and opening the feed water flowing path by opening the check valve in connection with the connector;
• and
• a locking means installed in the connector, for detachably fixing the filter housing to the connector;
• and
• a passage switching guide being installed at the upper portion of the filter housing, and having a first path for supplying feed water to the water purification filter from the feed water flowing path opened when the filter housing is connected to the connector, and a second path for supplying water purified by the water purification filter to the outflow hole.

A water purification system using a water purification filter easily replaced by a connector, comprising:

• a first connector having an inflow hole through which external feed water flows in, a check valve body for housing a check valve elastically installed to open/close a feed water flowing path for guiding feed water from the inflow hole to a filter side, and an outflow hole for externally discharging purified water;
• a first filter housing for housing a sediment filter, and opening the feed water flowing path by opening the check valve in detachable connection with the first connector;
• a second connector having its inflow hole connected in series to the outflow hole of the first connector, and including a check valve body for housing a check valve elastically installed to open/close a feed water flowing path for guiding feed water to a filter side, and an outflow hole for externally discharging purified water;
• a second filter housing for housing a precarbon filter, and opening the feed water flowing path by opening the check valve in detachable connection with the second connector;
• a third connector having its inflow hole connected in series to the outflow hole of the second connector, and including a check valve body in which a check valve elastically installed to open/close a feed water flowing path for guiding feed water to a filter side and a concentrated water discharge path for externally discharging concentrated water are formed, and an outflow hole for externally discharging purified water;
• a third filter housing for housing a reverse osmosis membrane filter, and opening the feed water flowing path by opening the check valve in detachable connection with the third connector;
• a fourth connector having its inflow hole connected in series to the outflow hole of the third connector, and including a check valve body for housing a check valve elastically installed to open/close a feed water flowing path for guiding feed water to a filter side, and an outflow hole for externally discharging purified water;
• and
• a fourth filter housing for housing a postcarbon filter, and opening the feed water flowing path by opening the check valve in detachable connection with the fourth connector.