| 摘要 |
PROBLEM TO BE SOLVED: To provide a telescope preventive plate which enables the whole membrane unit to be uniformly used by making the inflow of raw water to the membrane unit uniform in the circumferential direction, and to provide a fluid separation element using the same. SOLUTION: The telescope preventive plate of the spiral type fluid separation element comprises an inner circumferential annular part, an outer circumferential annular part and spoke parts connecting the annular parts. The end point of a center line in the cross face of the spoke part is located on a place different from a vertical line of the telescope preventive plate passing through a start point of the center line. COPYRIGHT: (C)2010,JPO&INPIT
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