A liquid dispenser, comprising: a tank having a bottom , the bottom including a protrusion projecting upward; and an inner assembly having a pump and a bottom provided over the protrusion of the tank , the inner assembly being removable from the tank , wherein the inner assembly further includes: a first filter , a second filter located inside the first filter , a support including an upper plate and a sidewall , the sidewall connected to a lower side of the first filter , and a lower filter cover provided at a lower end of the first filter , the lower filter cover comprising: a frame inserted into the support and inserted onto the protrusion when the inner assembly is coupled to the tank , and a flange extending in a horizontal direction from a lower end of the frame and provided under lower ends of the first filter and the support , wherein, when the inner assembly is coupled to the tank , the upper plate and the sidewall of the support cover a top surface and side supports, respectively, of the protrusion , wherein the second filter has a tubular outer wall extending perpendicular to the bottom plate and an inner wall provided inside the outer wall , and wherein the pump is provided inside the second filter . a tank having a bottom , the bottom including a protrusion projecting upward; and an inner assembly having a pump and a bottom provided over the protrusion of the tank , the inner assembly being removable from the tank , wherein the inner assembly further includes: a first filter , a second filter located inside the first filter , a support including an upper plate and a sidewall , the sidewall connected to a lower side of the first filter , and a lower filter cover provided at a lower end of the first filter , the lower filter cover comprising: a frame inserted into the support and inserted onto the protrusion when the inner assembly is coupled to the tank , and a flange extending in a horizontal direction from a lower end of the frame and provided under lower ends of the first filter and the support , wherein, when the inner assembly is coupled to the tank , the upper plate and the sidewall of the support cover a top surface and side supports, respectively, of the protrusion , wherein the second filter has a tubular outer wall extending perpendicular to the bottom plate and an inner wall provided inside the outer wall , and wherein the pump is provided inside the second filter . a first filter , a second filter located inside the first filter , a support including an upper plate and a sidewall , the sidewall connected to a lower side of the first filter , and a lower filter cover provided at a lower end of the first filter , the lower filter cover comprising: a frame inserted into the support and inserted onto the protrusion when the inner assembly is coupled to the tank , and a flange extending in a horizontal direction from a lower end of the frame and provided under lower ends of the first filter and the support , a frame inserted into the support and inserted onto the protrusion when the inner assembly is coupled to the tank , and a flange extending in a horizontal direction from a lower end of the frame and provided under lower ends of the first filter and the support , wherein, when the inner assembly is coupled to the tank , the upper plate and the sidewall of the support cover a top surface and side supports, respectively, of the protrusion , wherein the second filter has a tubular outer wall extending perpendicular to the bottom plate and an inner wall provided inside the outer wall , and wherein the pump is provided inside the second filter . <EOS>