HOLLOW-FIBER MEMBRANE MODULE

摘要

A housing (30) of a hollow-fiber membrane module (101) is so configured as to have a small-diameter part (3B) having an inner diameter smaller than an inner diameter of a flow regulation cylinder (9) facing a part of the housing (30) on which a nozzle (8) is provided, and which is arranged on a lower side than a lower end of the flow regulation cylinder (9) in an axial direction of the hollow-fiber membrane module (101); or the flow regulation cylinder (9) is so configured as to have a small-diameter part (9G) which has an inner diameter smaller than the inner diameter of the flow regulation cylinder (9) facing the part of the housing (30) on which the nozzle (8) is provided, and which is arranged on a lower side than the existing region of the flow regulation holes (10) in the axial direction of the hollow-fiber membrane module (101).

主权项

1. A hollow-fiber membrane module comprising:
a hollow-fiber membrane bundle including a plurality of hollow-fiber membranes; a first bundling and fixing part at which the hollow-fiber membrane bundle is bundled and fixed in a condition that at least a first end part of the hollow-fiber membrane bundle is kept open; a housing having at least one nozzle on a side surface thereof nearer to the first end part and housing the hollow-fiber membrane bundle therein; and a flow regulation cylinder having a plurality of flow regulation holes and existing between the first bundling and fixing part and the housing to liquid-tightly fix between the first bundling and fixing part and the housing, wherein: (i) the housing is so configured as to have a small-diameter part which has an inner diameter smaller than an inner diameter of the flow regulation cylinder facing a part of the housing on which the nozzle is provided, and which is arranged on a lower side than a lower end of the flow regulation cylinder in an axial direction of the hollow-fiber membrane module, or (ii) the flow regulation cylinder is so configured as to have a small-diameter part which has an inner diameter smaller than the inner diameter of the flow regulation cylinder facing the part of the housing on which the nozzle is provided, and which is arranged on a lower side than the flow regulation holes in the axial direction of the hollow-fiber membrane module.