Filter device
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United States of America Patent
Stats
-
Mar 22, 2011
Grant Date -
Oct 21, 2004
app pub date -
Nov 26, 2002
filing date -
Nov 27, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter device is made up of: a filter portion having a fluid outlet at its axis, and a fluid inlet in a position away from the axis, in which a fluid containing particles is supplied at a predetermined flow speed from the fluid inlet to cause a swirling, particles are moved outward in a centrifugal state and the fluid from which the particles are separated is discharged from the fluid outlet, and the particles separated by slowing down the swirling are allowed to sink; and a settlement portion in which the particles that settle in the filter portion are allowed to settle. Thus, a fluid containing particles is supplied at a predetermined flow speed to cause swirling, the particles are separated by a centrifugal force caused by the swirling and allowed to sink and settle, and the fluid from which the particles are separated is discharged. A large amount of particles can be allowed to settle and be reliably removed in a short time with this small-sized and simple device. The filter device does not clog, does not need washing and exchanging work and keeps the costs low.
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