公开(公告)号：US09353713B2

公开(公告)日：2016-05-31

申请号：US13715003

申请日：2012-12-14

Applicant: CUMMINS FILTRATION IP, INC.

Inventor： Brian J. Terry ,  Carey A. Curt ,  Mark J. Johnson

IPC: F02M37/22 ,  B01D36/00 ,  B01D17/04 ,  B01D27/14 ,  B01D17/02

CPC classification number: F02M37/221 ,  B01D17/0214 ,  B01D17/045 ,  B01D27/148 ,  B01D36/005 ,  B01D36/006

Abstract: A fuel water separator (FWS) filter that is configured to permit water to be drained from the water sump of the FWS filter without shutting off fuel flow to the FWS filter. A check valve is positioned between the water sump and the filter element. When the FWS filter is under vacuum (e.g. as in operation), the check valve can be closed to allow water to drain from the sump. The check valve can close automatically by floating on accumulated water in the sump until the water rises to a level where the check valve is closed. The check valve can also close by opening the drain valve of the FWS filter, which causes a differential pressure between the sump and the vacuum created in the filter element chamber, which forces the check valve to close.

Abstract translation: 燃料水分离器（FWS）过滤器，其被配置为允许水从FWS过滤器的水槽排出，而不关闭向FWS过滤器的燃料流。 止回阀位于水槽和过滤元件之间。 当FWS过滤器处于真空状态（例如在操作中）时，可以关闭止回阀以允许水从贮槽排出。 止回阀可以通过漂浮在贮槽中积聚的水中自动关闭，直到水上升到止回阀关闭的水平。 止回阀也可以通过打开FWS过滤器的排水阀来关闭，这会导致油底壳和过滤元件室中产生的真空之间的压差，迫使止回阀关闭。