Filter apparatus and clothes treating apparatus having the same

1 . A filter apparatus positionable outside a washing machine and connectable to a drain device of the washing machine, the filter apparatus comprising:

a filter case including:

a case inlet configured so that, with the filter apparatus connected to the drain device, water from the drain device is flowable through the case inlet into the filter case,

a case outlet configured so that, with the filter apparatus connected to the drain device, water in the filter case is flowable through the case outlet out of the filter case, and

a remaining water guide inclined downward from the case outlet toward the case inlet;

a filter detachably mountable inside the filter case so that water flowing through the case inlet is flowable through a surface of the filter to filter foreign substances from the water, and then to the case outlet;

a filter cleaner configured to clean the surface of the filter; and

a controller configured to control the filter cleaner to clean the surface of the filter,

wherein, while the filter is mounted inside the filter case, the remaining water guide is angled such that a distance between the filter and the remaining water guide increases along a length of the filter extending between the case outlet and the case inlet.

2 . The filter apparatus of claim 1 , wherein

the filter cleaner includes:

a cleaning driving device including a cleaning motor, and

a cleaner configured to be rotated in contact with the surface of the filter while the filter is mounted inside the filter case,

wherein the cleaning driving device is configured to drive rotation of the cleaner with power generated by the cleaning motor.

3 . The filter apparatus of claim 2 , wherein

the cleaner is configured to, while the filter is mounted inside the filter case, transfer foreign substances filtered in a portion of the filter close to the case inlet to a portion of the filter close to the case outlet while the rotation of the cleaner is driven by the cleaning driving device.

4 . The filter apparatus of claim 1 , wherein

the remaining water guide is positioned below the filter while the filter is mounted inside the filter case.

5 . The filter apparatus of claim 1 , further comprising:

a connecting hole arranged in the filter case to discharge water guided by the remaining water guide toward the case inlet; and

a connecting door configured to open and close the connecting hole.

6 . The filter apparatus of claim 1 , further comprising:

a filtering flow path passing through the filter while the filter is mounted inside the filter case;

a bypass flow path bypassing the filter while the filter is mounted inside the filter case;

a connecting hole formed to allow water from the bypass flow path to move to the case inlet and to allow water flowing through the case inlet to move to the bypass flow path; and

a connecting door configured to open and close the connecting hole.

7 . The filter apparatus of claim 6 , wherein

the controller controls the connecting door to open the connecting hole based on a determination that the filter is clogged.

8 . The filter apparatus of claim 6 , wherein

the controller controls the connecting door to open the connecting hole based on a determination that an inflow of water through the case inlet is stopped.

9 . The filter apparatus of claim 1 , further comprising:

a circuitry positioned above the filter while the filter is mounted inside the filter case,

wherein the controller is arranged in the circuitry.

10 . The filter apparatus of claim 9 , further comprising:

a user interface device positioned above the circuitry.

11 . The filter apparatus of claim 1 , wherein

the filter case includes a case opening through which the filter is passable to be mounted inside the filter case, and which is positioned closer to the case outlet than the case inlet.

12 . The filter apparatus of claim 2 , wherein

the cleaning driving device is positioned closer to the case inlet than the case outlet.

13 . The filter apparatus of claim 1 , further comprising:

a handle detachably couplable to the filter.

14 . The filter apparatus of claim 1 , wherein

the surface of the filter is configured to filter foreign substances having a size of 5 mm or less from the water flowing through the surface of the filter.

15 . A clothes treating apparatus comprising:

a washing machine including a washing machine housing, a tub inside the washing machine housing, and a drain device configured to discharge water from the tub to outside of the washing machine housing; and

a filter apparatus disposed outside the washing machine housing and connected to the drain device, the filter apparatus including:

a filter case including:

a case inlet configured so that water from the drain device is flowable through the case inlet into the filter case,

a case outlet configured so that water in the filter case is flowable through the case outlet out of the filter case, and

a remaining water guide configured to be inclined downward from the case outlet toward the case inlet;

a filter detachably mountable inside the filter case so that water flowing through the case inlet is flowable through a surface of the filter to filter foreign substances from the water, and then to the case outlet; and

a circuitry including:

a controller configured to control the filter apparatus, and

a power supply part configured to receive power to power the filter apparatus,

wherein the remaining water guide is positioned below the filter while the filter is mounted inside the filter case, and

wherein, while the filter is mounted inside the filter case, the remaining water guide is angled such that a distance between the filter and the remaining water guide increases along a length of the filter extending between the case outlet and the case inlet.