초록 ▼

A water tank is proposed with a filter cartridge especially for use in automatic vending machines in which the risk of contamination and bed compaction of the filter bed are reduced or avoided. This is accomplished according to the invention by the water inlet opening of filter cartridge being locat

A water tank is proposed with a filter cartridge especially for use in automatic vending machines in which the risk of contamination and bed compaction of the filter bed are reduced or avoided. This is accomplished according to the invention by the water inlet opening of filter cartridge being located at the bottom, with a passageway provided for the water to pass through filter cartridge upward and a descending drop line to guide the water to drain of water tank, located at the bottom.

대표청구항 ▼

1. A water tank system, comprising:a water tank having a drain located at a bottom thereof, the drain coupling with a drain line, wherein the water tank is at least partially filled with water when in use; a filter cartridge removably located inside the water tank, the filter cartridge including at

1. A water tank system, comprising:a water tank having a drain located at a bottom thereof, the drain coupling with a drain line, wherein the water tank is at least partially filled with water when in use; a filter cartridge removably located inside the water tank, the filter cartridge including at least one lower water inlet opening immersed in, and open to, the water in the water tank when in use, a passageway for water to flow upward through the filter cartridge, a descending drop line to conduct the water toward the drain, and a connection for tightly connecting the drop line to the drain; wherein the filter cartridge is connected to the interior of the water tank such that the connection between the drop line and the drain is located inside the water tank.