| 摘要 |
<p>An apparatus for water filtration with an automatic backwash cycle includes a membrane water filter comprising an upper chamber (4), a lower chamber (2), and a single or plurality of filter membranes (31) separating said upper (4) and lower (2) chambers. After a period of the apparatus being in filtration mode, the filter membranes (31) become progressively less permeable, causing a siphon pipe (5) to initiate a backwash mode, whereupon unfiltered water from a feed cylinder (10) cleans the upstream side of the filter membranes (31) before being sucked out via the siphon pipe (5). After that, the water flows downwards from the upper chamber (4) into the lower chamber (2), as the direction of flow through the filter membranes (31) is reversed. This backwash goes on until the level of water in the upper chamber (4) falls to a point that causes a break in the siphon, resulting in a switch back to filtration mode.</p> |
