| 摘要 |
PROBLEM TO BE SOLVED: To increase the capacity of capturing foreign substance and to simplify a structure. SOLUTION: Two guiding chambers 5a and 5b are provided on both ends in a cylinder axial direction inside a cylindrical casing 1, a cylindrical filter element 2 is arranged between both guiding chambers 5a and 5b, and the inside of the element 2 is used as an inflow chamber 3. An outflow chamber 4 is provided outside the peripheral surface of the element 2 and communicated respectively to both guiding chambers 5a and 5b through both outflow holes 7a and 7b with a check valve 12 provided on a partition wall 7, and the inflow chamber 3 is communicated respectively to both guiding chambers 5a and 5b through two inflow holes 2a and 2b with a check valve 11 provided on both ends in the cylinder axial direction of the element 2. Since inflow water to the inflow chamber 3 flows in from both ends in the cylinder axial direction and the element 2 can communicate the inflow chamber 3 to the outflow chamber 4 in a wide area over the entire peripheral surface, a foreign substance capturing function of a sufficient capacity is obtained. Also, the water flows from one guiding chamber to the other guiding chamber, so that flow path arrangement is simplified along the cylinder axial direction resulting in the simple constitution. COPYRIGHT: (C)2005,JPO&NCIPI
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