| 摘要 |
PROBLEM TO BE SOLVED: To provide a porous filter cartridge hard to produce contamination, made advantageous from an aspect of coat and capable of performing efficient filtration and extraction treatment without being damaged. SOLUTION: The porous filter cartridge is constituted so that a porous filter is held on the bottom of a bottomed cylindrical cap 5 inside the bottomed cylindrical cap 5 having a discharge opening 29 formed in the central part of its bottom. A plurality of ribs 35, 37 and 39 for radially supporting the porous filter centering around the discharge opening 29 are erected on the bottom of the cap 5, at least some of a plurality of the ribs are connected so as to straddle the discharge opening 29 at the central part of the discharge opening 29 and the projected surface 41 projected toward the porous filter is formed in the top surface of the joint 43 of the connected ribs. COPYRIGHT: (C)2009,JPO&INPIT
|
