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Fuel filter comprising a filter insert with a prefilter element and a main filter element

A fluid filter and pre-filter technology, applied in filter plug-in, fuel or oil fields, can solve the problems of contamination, damage, fluid arrival, etc., and achieve the effect of compact structure, good separation, and reduced space requirements

Active Publication Date: 2019-09-13
MANN HUMMEL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it may occur that contaminated, i.e. unfiltered, fluid reaches the clean side of the filter housing
This can affect or damage downstream units such as injection systems or combustion engines

Method used

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  • Fuel filter comprising a filter insert with a prefilter element and a main filter element
  • Fuel filter comprising a filter insert with a prefilter element and a main filter element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] figure 1 A fluid filter 10 according to the invention is shown. Fluid filter 10 can be designed, for example, as a fuel filter for filtering out pollutants contained in fuel, in particular diesel fuel. Fluid filter 10 is suitable, for example, for use in motor vehicles with an internal combustion engine.

[0029] The fluid filter 10 comprises an openable filter housing 12 having a filter pot 14 with an insertion opening 16 and having a filter cover 18 for closing the filter pot 14 . The filter cap 18 may be screwed into the filter canister 14 . Another type of fastening of the filter cover 18 on the filter pot 14 is conceivable. The filter housing 12 can be produced, for example, from metal or from a plastic material.

[0030] A filter insert 20 is arranged exchangeably in the interior of the filter housing 12 . exist figure 1 Middle filter insert 20 is in the operating position in filter housing 12 , so that fluid filter 10 can be used in separate operation. Fil...

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PUM

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Abstract

The invention relates to a fluid filter (10), particularly for fuel or oil, comprising a filter housing (12) and a filter insert (20) replaceably arranged in the filter housing (12), with a pre-filterelement (22) and a main filter element (24) which are arranged one above the other in the filter housing (12) in the direction of the longitudinal axis (26) of the filter housing (12). The filter housing (12) comprises a pre-filter outlet (98) for the pre-filter element (22) and a separately embodied main filter outlet (100) for the main filter element (24). The two outlets are sealed in the filter housing (12) in a fluid-tight manner in the operating position of the filter insert (20). In a drainage position into which the filter insert (20) can be moved by means of an axially oriented withdrawal of the filter insert (20) out of the operating position thereof, a raw side (60) of the pre-filter element (22) is fluidically connected to the pre-filter outlet (98) and a raw side (66) of themain filter element (24) is fluidically connected to the main filter outlet (100). The fluid filter (10) according to the invention enables a simplified and rapid replacement of the filter insert (20).

Description

technical field [0001] The invention relates to a fluid filter, in particular for fuel or oil, having a filter housing and a filter insert arranged exchangeably in the filter housing, the filter insert having a pre-filter element and having a main filter The filter elements are arranged one above the other in the filter housing in the direction of the longitudinal axis of the filter housing. Furthermore, the invention relates to a filter insert. Background technique [0002] From EP 2 649 292 B1 a fuel filter is known which has three annular filter elements which are coaxially arranged relative to each other and wherein at least two of the annular filter elements are axially opposite arranged staggered from each other. The ring filter elements are connected in series and the fluid to be filtered can flow through them one after the other. [0003] WO 2007 / 128 306 A2 discloses a liquid filter for an internal combustion engine having a filter housing with a filter insert arr...

Claims

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Application Information

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IPC IPC(8): B01D36/00B01D27/14B01D29/58
CPCB01D27/146B01D29/58B01D36/003B01D2201/298B01D2201/46
Inventor C.鲍曼J.埃布勒L.施佩尔特
Owner MANN HUMMEL GMBH
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