Combination fuel filter and water separator,申请号US19820399459-传众专利搜索

Combination fuel filter and water separator

申请公布号：US4502954(A)

申请号：US19820399459

申请日期：1982.07.19

申请公布日期：1985.03.05

申请人：

DRUFFEL, JAMES B.

发明人：DRUFFEL, JAMES B.

分类号：B01D17/00;B01D35/153;B01D35/30;B01D36/00;F02B1/04;F02M37/00;F02M37/22;(IPC1-7):B01D27/08

主分类号：B01D17/00

摘要：A combination fuel filter and water separator which is particularly useful at the upstream, suction side of a fuel pump includes efficient provision for initial settling of water and particulate material in a lower chamber, after which the fluid passes up through a backflow preventing check valve and into an upper chamber, where fine filtration takes place. The check valve, preferably a ball valve between the lower and upper chambers, prevents any backflow of fuel by gravity from the filter/separator assembly when a top cover is opened, e.g. for servicing of a filter element in the upper chamber. The location of the ball valve avoids subjecting it to highly contaminated entering fuel, which could foul the valve. Associated with the inlet structure of the assembly is a channel for inducing a helical flow path for centrifugally removing water and particles while imparting a downward component of motion to them.