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    • 5. 发明公开
    • Fluid filtration system with helical filter element
    • Vorrichtung zur Filtration vonFlüssigkeitenmit einemspiralförmigenFilterelement
    • EP1391229A1
    • 2004-02-25
    • EP02255769.8
    • 2002-08-19
    • Perkins Engines Company Limited
    • Evans, John R.
    • B01D29/48B01D29/96
    • B01D29/216B01D29/33B01D29/48B01D29/96F01M1/08F01M11/03F01M2001/1014F01P3/08F01P2011/061Y10T29/49604
    • The invention provides a filter element for a fluid filtration system, particularly for piston cooling jets used in reciprocating piston engines. The filter element is formed from a length of filter material arranged helically in a substantially tubular form. By applying a torque the length of filter material is resiliently expandable to a fitting position in which opposing longitudinal edges of the length are spaced apart from each other. The filter element is then fitted over a fluid chamber of the filtration system and allowed to retract to a rest position in which the opposing longitudinal edges are close or in contact. In the rest position the filter element surrounds the fluid chamber and covers a fluid inlet of the fluid chamber. The filter element of the invention can be used to apply local filtration, and can be readily removed for cleaning or replacement by reversing the fitting process.
    • 本发明提供一种用于流体过滤系统的过滤元件,特别是用于往复式活塞发动机中使用的活塞冷却喷嘴。 过滤元件由基本上呈管状形式螺旋地布置的一段过滤材料形成。 通过施加扭矩,过滤材料的长度可弹性地膨胀到其中长度的相对的纵向边缘彼此间隔开的配合位置。 然后将过滤元件安装在过滤系统的流体室上,并允许其退回至相对的纵向边缘靠近或接触的静止位置。 在静止位置,过滤元件围绕流体室并覆盖流体室的流体入口。 本发明的过滤元件可用于施加局部过滤,并且可以通过反转安装过程容易地移除以进行清洁或更换。