Patent ID: 8961890
Filing Date: 2015-02-24
Classification: B01D,C02F,Y02A

Abstract:
1. A purifying apparatus using a photocatalytic sheet comprising: an outer case having an inlet and an outlet; a photocatalytic tube disposed within the outer case, the photocatalytic tube defining a longitudinal axis; a fan disposed adjacent the outlet for controlling a fluid or air flow through the purifying apparatus; a photocatalytic sheet inserted into the photocatalytic tube; and an ultraviolet UV lamp inserted into the photocatalytic tube and extending along the longitudinal axis; and wherein the photocatalytic sheet has a thickness less than a width of the photocatalytic sheet, and the width is less than a length of the photocatalytic sheet; wherein the photocatalytic sheet spirals to form a spiral body extending along said longitudinal axis, the spiral body having an axial passage along said longitudinal axis and within which the ultraviolet UV lamp is located; wherein the spiral body is in a shape consisting of: an outer edge extending the length of the photocatalytic sheet, the outer edge having a smooth spiral shape for an entire length of the spiral body; an inner edge extending the length of the photocatalytic sheet trending spirally for the entire length of the spiral body while undulating along the length so that the inner edge elevates in an undulating manner from the smooth spiral shape; and a plurality of folds causing deviation from the smooth spiral shape, wherein each fold among said plurality of folds originates as an undulation at said inner edge and extends in the width direction from the inner edge toward the outer edge while ending before reaching the outer edge, and wherein all deviation from the smooth spiral shape of the spiral body consists of said plurality of folds.