Filter for trapping foreign matter
First Claim
1. A filter for trapping foreign matter comprising:
- an inflow chamber (3a, 5a) into which a fluid flows;
an outflow chamber (11c) from which flows the fluid that has flown into said inflow chamber (3a, 5a); and
a filter element (3) partitioning said two chambers, wherein said inflow chamber (3a, 5a) has a structure (5, 7) in which the fluid that flows into said inflow chamber (3a, 5a) is spouted up from the bottom portion of said inflow chamber (3a, 5a) and produces a rising flow of said fluid such that is directed toward said filter element.
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Accused Products
Abstract
It is an object of the present invention to provide a filter for trapping foreign matter in which a filtration element can trap foreign matter that is admixed to a fluid present inside the filter with good reliability and a comparatively high trapping ratio. Hydraulic oil that has flown from an opening portion into a guide space of a first flow path guide is guided downward by the first flow path guide and directed toward a second flow path guide. As a result, the oil passes through a very narrow gap, that is, a gap with a cross sectional area of the flow path narrowed so as to increase the flow velocity of the hydraulic oil, a rising flow of the hydraulic oil is formed, and this flow is spouted up by the second flow path guide and guided by the first flow path guide toward a filter element. Foreign matter admixed to the hydraulic oil rises with good intensity together with the hydraulic oil and is moved by the hydraulic oil toward the filter element. Therefore, foreign matter can be trapped by the filter element with good reliability and a comparative high trapping ratio.
17 Citations
12 Claims
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1. A filter for trapping foreign matter comprising:
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an inflow chamber (3a, 5a) into which a fluid flows;
an outflow chamber (11c) from which flows the fluid that has flown into said inflow chamber (3a, 5a); and
a filter element (3) partitioning said two chambers, wherein said inflow chamber (3a, 5a) has a structure (5, 7) in which the fluid that flows into said inflow chamber (3a, 5a) is spouted up from the bottom portion of said inflow chamber (3a, 5a) and produces a rising flow of said fluid such that is directed toward said filter element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12)
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8. A filter for trapping foreign matter comprising:
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an inflow chamber (3a) into which a fluid flows;
an outflow chamber (11c) from which flows the fluid that has flown into said inflow chamber (3a); and
a filter element (3) partitioning said two chambers, wherein a guide (33) for forcibly guiding the flow of the fluid that has flown into said inflow chamber (3a) toward said filter element (3) is held inside said inflow chamber (3a). - View Dependent Claims (9)
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10. A filter for trapping foreign matter comprising:
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an inflow chamber (11c or 31c) into which a fluid flows;
an outflow chamber (31c or 11c) from which flows the fluid that has flown into said inflow chamber (11c or 31c); and
a filter element (31) partitioning said two chambers, wherein said filter element (31) comprises;
a target trapping element (31a) for trapping foreign matter which is the target; and
a fall-off preventing element (31b) for preventing said foreign matter which is the target trapped by said target trapping element (31a) from falling off, the fall-off preventing element (31a) being provided on the side surface of the inflow path of said target trapping element. - View Dependent Claims (11)
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Specification