US 12,214,317 B2
Membrane humidifier for fuel cell, comprising multi-channel hollow fiber membranes
Young Seok Oh, Seoul (KR); Kyoung Ju Kim, Seoul (KR); and Woong Jeon Ahn, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/417,767
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Dec. 20, 2019, PCT No. PCT/KR2019/018168
§ 371(c)(1), (2) Date Jun. 24, 2021,
PCT Pub. No. WO2020/138852, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 10-2018-0171120 (KR), filed on Dec. 27, 2018.
Prior Publication US 2022/0013797 A1, Jan. 13, 2022
Int. Cl. B01D 63/00 (2006.01); B01D 63/02 (2006.01); B01D 63/04 (2006.01); B01D 69/08 (2006.01); H01M 8/04119 (2016.01)
CPC B01D 63/033 (2022.08) [B01D 63/04 (2013.01); B01D 69/081 (2013.01); H01M 8/04149 (2013.01); B01D 69/082 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A membrane humidifier for a fuel cell, the membrane humidifier comprising:
a middle case in which a plurality of hollow fiber membranes are accommodated;
a cap case coupled to the middle case; and
a fixing unit in which ends of the plurality of hollow fiber membranes are potted, the fixing unit filling gaps between the ends of the hollow fiber membranes and gaps between the hollow fiber membranes and an end of the middle case, thereby blocking the end of the middle case, wherein
each of the hollow fiber membranes has a plurality of channels including a first channel of maximum inner diameter and a second channel of minimum inner diameter, and
a difference between the maximum inner diameter and the minimum inner diameter is 30 to 600 μm.