Patent ID: 7275551

Claim:
A food washing apparatus for washing food materials such as food material stuffs to be eaten raw, grains, tubers, seeds, or nuts by using ozonized water, comprising: an ozonized water generator; a washing tank in which the food materials are put and which can rotate to wash the food materials, the washing tank having a polygon shaped cross-section extending perpendicular to an axis of rotation of the washing tank; a drainage part formed on only one side of the polygon shaped cross-section of the washing tank and including a large number of openings to such a degree that water passes through and the food materials do not pass through; and wash water pipings which are disposed in the washing tank in an axial direction and in which water spray holes for spraying wash water including at least ozonized water generated by the ozonized water generator into the washing tank are formed, wherein while at least part of the wash water sprayed from the wash water pipings is drained from the washing tank every rotation of the washing tank, washing of the food materials is performed.