Hollow fiber membrane module and manufacturing method therefor

Abstract

This hollow fiber membrane module (1) is configured so that a hollow fiber membrane bundle (2), formed by bending multiple hollow fiber membranes (5) into a U-shape, is filled into a cylindrical case (3) and a fixing resin (4) is injected into the case (3) to fix the side of the hollow fiber membrane bundle (2) opposite a bent section (2a) thereof to the bottom of the case (3). The hollow fiber membranes (5) are bent into a U-shape inside of the case (3) and at a substantially central part of the hollow fiber membrane bundle (2), a void portion (6) is formed along the height direction of the case (3). A core rod is inserted into the void portion (6).

Description

technical field [0001] The present invention relates to a hollow fiber membrane module and a manufacturing method thereof. [0002] This application claims priority based on Japanese Patent Application No. 2014-046873 for which it applied in Japan on March 10, 2014, and uses the content of this Japanese Patent Application here. Background technique [0003] In recent years, water purifiers for purifying tap water have been widely used in households and the like. As such a water purifier, many water purifiers using a hollow fiber membrane module as a filter material are known. [0004] As the above-mentioned hollow fiber membrane module, there is known a hollow fiber membrane module formed by packing a hollow fiber membrane bundle formed by bending a large number of hollow fiber membranes into a cylindrical casing, and injecting a fixing material into the casing. A resin is used to fix the hollow fiber membrane bundle to the bottom of the housing on the side opposite to the...

AI Technical Summary

Problems solved by technology

However, if the hollow fiber membranes are simply bent into a U-shape, especially when the hollow fiber membrane bundle is housed in a cylindrical case, the filling efficiency of the hollow fiber membranes becomes low, making it difficult to improve the filtration efficiency. performance

That is, when the hollow fiber membranes are simply bent into a U-shape to form a hollow fiber membrane bundle, the hollow fiber membrane bundle has a substantially rectangular shape or an oblong shape in plan view. Gaps are formed between the inner surfaces of the circular shell when viewed from above, and as a result, the filling efficiency becomes low

In addition, the filling efficiency becomes so low that it is difficult to miniaturize the components in order to obtain predetermined filtration performance

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