Patent ID: 8414693

Claim:
A humidifying membrane module comprising: a hollow fiber membrane bundle formed by a plurality of hollow fiber membranes; a case accommodating said hollow fiber membrane bundle; a first flow passage passing through hollow inner portions of said hollow fiber membranes; and a second flow passage passing through outer wall surface sides of said hollow fiber membranes, wherein said hollow fiber membrane bundle and said case are simultaneously integrated by potting members sealing gaps between said hollow fiber membrane bundle and said case, at both ends of said hollow fiber membrane bundle, an inlet and an outlet for constructing said first flow passage are provided respectively at both ends of said case, and an entrance and an exit for constructing said second flow passage are provided respectively in side surfaces in the vicinity of said both ends, wherein sealing members are interposed between said potting members and an inner peripheral surface of said case respectively, wherein said case is constructed by a case main body having a rectangular hollow section accommodating said hollow fiber membrane bundle and provided with opening portions at both end portions and both side surfaces each of which is provided on a long side of said case main body, a first lid member and a second lid member closing both end opening portions of said case main body and respectively provided with said inlet and the outlet constructing said first flow passage, and a third lid member and a fourth lid member closing the opening portions in both side surfaces of said case main body and respectively provided with said entrance and said exit constructing said second flow passage, wherein the opening portions provided in both said side surfaces are flat and are formed in a mesh shape, and wherein said sealing members simultaneously seal gaps between both end opening portions of said case main body, and said first lid member and said second lid member.