Filter module for water dispensing device

A filter module for a liquid dispensing device, the filter module comprising:

• a pre-filter including a first carbon block having a hollow shape;
• a hollow fiber membrane filter that receives water from the pre-filter;
• and
• a composite filter including:
• a filter housing including an inflow port and a discharge port;
• a second carbon block having a hollow shape, the second carbon block being provided in a lower space of the filter housing;
• a third carbon block having a hollow shape, the third carbon block being provided in an upper space of the filter housing;
• an electrostatic adsorption filter positioned around an outer surface of the third carbon block;
• and
• a first filter bracket positioned between the second carbon block and the third carbon block,
• wherein the first filter bracket defines a water passage from an inner surface of the second carbon block to an outer surface of the electrostatic adsorption filter,
• wherein the first filter bracket extends along an upper surface of the second carbon block and portions of the inner surface and an outer surface of the second carbon block,
• wherein the electrostatic adsorption filter includes a plurality of convex surfaces that are convex outwardly, and a plurality of concave surfaces that are provided between the convex surfaces and contact the outer surface of the third carbon block so that the electrostatic adsorption filter has a wrinkled shape along a circumferential direction,
• wherein a diameter of the outer surface of the second carbon block is greater than a diameter of an outer surface of the third carbon block, and the diameter of the outer surface of the second carbon block corresponds to a diameter of the outer surface of the electrostatic adsorption filter,
• wherein the electrostatic absorption filter includes a polyamine-based polymer positively charged functional group applied to a cellulose support body, and
• wherein water sequentially passes through the first carbon block, the hollow filament membrane, the second carbon block, the electrostatic adsorption filter, and the third carbon block.