Water filter

A water filter comprising:

• a water filter cartridge including a water filter cartridge body, a water filter cartridge outlet cap having a water filter cartridge outlet, and a water filter cartridge sealing cap,
• wherein the water filter cartridge body, is made from one or more filtering materials, in a hollow cylinder form with a central hollow space, one end of the water filter cartridge body is coupled with the water filter cartridge outlet cap so that the central hollow space of the water filter cartridge body communicated with the water filter cartridge outlet, and another end of the water filter cartridge body is coupled with the water filter cartridge sealing cap so that the central hollow space of the water filter cartridge body is sealed at said another end,
• wherein the water filter cartridge outlet with hollow cylinder form is protruding from one surface of the water filter cartridge outlet cap;
• a filter container for containing the water filter cartridge therein, wherein the filter container including a filter container body, a filter container cap, a filter container inlet, and a filter container outlet,
• wherein the filter container inlet and the filter container outlet are arranged at a filter container body bottom,
• wherein the filter container body having a filter container outlet cylinder hole provided at the filter container body bottom for receiving the water filter cartridge outlet, so as when water flows into the filter container through the filter container inlet will surround the water filter cartridge and flows through the water filter cartridge body into the central hollow space of the water filter cartridge body, and flows to the filter container outlet through the water filter cartridge outlet, and
• wherein the filter container body having ribs provided at an inner surface of the filter container body bottom to reinforce for the filter container body bottom and providing gaps placed between the inner surface of the filter container body bottom and outer surface of the water filter cartridge outlet cap which is defined as a surface facing toward to the inner surface of the filter container body bottom;
• wherein:
• the ribs including ribs which are arranged in radial direction from the filter container outlet cylinder hole, and arc ribs which are in a circle arc shape surrounding the filter container outlet cylinder hole,
• wherein said arc ribs are arranged at an imaginary circle with a center of the filter container outlet cylinder hole, and in between two adjacent arc ribs there is a separating interval forming water communicating recesses;
• the water filter cartridge outlet cap having serrated protrusions protruding from the outer surface of the water filter cartridge outlet cap and integrating with the water filter cartridge outlet with hollow cylinder form to reinforce for said water filter cartridge outlet with hollow cylinder form;
• and
• the filter container outlet cylinder hole is a hole of a hollow cylinder portion protruding from the inner surface of the filter container body bottom,
• wherein, the hollow cylinder portion corresponding to the filter container outlet cylinder hole having fitting ribs connecting between the hollow cylinder portion and the arc ribs, the fitting ribs corresponding to the serrated protrusions for stopping the serrated protrusions at a position where they are engaged with each other.