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发明授权
CN102481499B 油水分离中使用导流屏的双级过滤 有权

油水分离中使用导流屏的双级过滤
摘要：
本发明公开了一种双级过滤器，其包括具有第一介质的外过滤器和具有第二介质的内过滤器。导流屏设置于第一介质和第二介质之间。该导流屏在第一介质和第二介质之间引导流动并创立流动路径，使得需要流过第一介质和第二介质的工作流体，由导流屏引导并流过第二介质，而使得不需要流过第二介质的另一种流体，由导流屏引导并从工作流体中分离处理。使用模制导流屏，该双级过滤器可以使用上行流或下行流的一个或全部，以实现有效的流体分离，例如，在发动机燃料过滤器内的油水分离。
摘要（英）：

A dual stage filter includes an outer filter with a first media and an inner filter with a second media. A barrier is between the first media and the second media. The barrier directs fluid flow between the first and second media. The barrier creates a flow path between the first and second media, such that a working fluid, which is desired to pass through the first and second media, is directed by the barrier and flows through the second media, and such that another fluid, which is not desired to pass through the second media, is directed by the barrier and separates from the working fluid. Using the barrier, the dual stage filter can employ either or both upward flow and downward flow to achieve efficient fluid separation, for example fuel water separation in an engine fuel filter.

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