公开(公告)号：US20170001152A1

公开(公告)日：2017-01-05

申请号：US15038931

申请日：2014-07-23

Applicant: LG ELECTRONICS INC.

Inventor： Jooyoung Park ,  Jongdeok Kim ,  Junseok Lee

IPC: B01D69/08 ,  B01D71/68 ,  B01D69/02 ,  B01D69/12 ,  B01D61/02 ,  B01D61/14

CPC classification number: B01D69/08 ,  B01D61/025 ,  B01D61/027 ,  B01D61/145 ,  B01D61/147 ,  B01D69/02 ,  B01D69/12 ,  B01D71/68 ,  B01D2325/02 ,  B01D2325/022 ,  B01D2325/04 ,  B01D2325/24

Abstract: The present invention relates to a hollow fiber membrane. Provided is a cylindrical hollow fiber membrane having an inside in which a hollow part is formed along an axial direction, the hollow fiber membrane including: a first layer positioned at the outermost part so as to be exposed to the outside, and having pores formed therein to make raw water enter and leave via the pores; a second layer formed on the inside of the first layer to filter out contaminants from raw water as the raw water passes through; and a third layer to optionally separate or filter out contaminants from the raw water introduced through the second layer or introduced from the hollow part, wherein the first layer to the third layer are integrally formed; the porosity of the first layer is greater than the porosity of the third layer; and porosities are gradually decreased from the first layer to the third layer.

Abstract translation: 本发明涉及中空纤维膜。 本发明提供一种圆筒状中空纤维膜，其具有沿着轴向形成有中空部的内侧，中空纤维膜包括：第一层，其位于最外侧部分，以露出外部，并且在其中形成有孔 使原水通过毛孔进出; 第一层，形成在第一层的内部，以在原水通过时从原水中滤出污染物; 以及第三层，以可选地从通过第二层引入或从中空部分引入的原水中分离或过滤污染物，其中第一层与第三层一体形成; 第一层的孔隙率大于第三层的孔隙率; 并且孔隙率从第一层逐渐降低到第三层。