Box type filter

A cartridge filter and filter element technology, applied in membrane filter, fixed filter element filter, filtration separation, etc., can solve the problems of filter medium damage, small mechanical strength, leakage and so on

Active Publication Date: 2022-03-01
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is problematic here that when glass fiber paper is used as filter medium, there is a risk of damage to the filter medium due to the low mechanical strength of the glass fiber paper
In an alternative solution with a beveled cut through the filter element, a reliable seal of the filter element in the region of its beveled connection can only be achieved with difficulty
Here, potential leak sites may be easily created

Method used

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  • Box type filter
  • Box type filter
  • Box type filter

Examples

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Embodiment Construction

[0026] exist figure 1 Four filter elements 10 for a filter 200 according to the invention are shown in . The corresponding filter element 10 is provided with folded structures 1 on its surface. Compared to known pleated filter elements, the filter medium 4 of the filter element 10 is provided with a special pleated structure 1 .

[0027] The filter element 10 has a folded structure 1 forming a plurality of fold peaks 1.1 and a plurality of fold valleys 1.2. Fold structure 1 is not the known notebook fold structure (Leporello-Faltung) or uniform zigzag fold structure (Zick-Zack-Faltung), which are also commonly referred to as pleats And there are rectangular folding sections 1.3 of exactly the same size. In contrast, the fold structure 1 is embodied as a special fold structure 1 , so that fold surfaces or fold sections 1 . 3 of different dimensions are produced. In this case, the folded structure 1 is such that the height h of the filter element in the edge regions A, B mi...

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PUM

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Abstract

The invention relates to a cassette filter having filter elements with a special folded structure, comprising a frame and a plurality of filter elements having a filter medium provided with a folded structure, the filter elements being accommodated in the frame, the invention relates to a filter element comprising a plurality of filter elements arranged adjacent to each other in such a way that each at least two filter elements adjacent to each other are arranged at an acute angle to each other and thus have a V-shaped arrangement, the filter elements having folded edges which are formed by folded peaks and folded valleys and extend perpendicular to the sides of the acute angle, the respective filter element being provided with a folded structure, the filter element is designed such that the height of the filter element in all edge regions is smaller than the height in the middle region of the filter element, and in each edge region, a folding surface that is smaller than the folding surface in the middle region of the filter element is obtained. By using the filter element, the differential pressure of the cassette filter can be reduced in an advantageous manner.

Description

technical field [0001] The invention relates to a filter cassette according to the preamble of claim 1 . Background technique [0002] Cassette filters are known from the prior art, for example from WO 2013 / 185878 A1 (see FIG. 7 there). Cassette filters have a frame in which a plurality of filter elements are accommodated. In this case, the filter element generally comprises a pleated, ie folded, filter medium. The filter elements are accommodated in the frame in such a way that every two adjacent filter elements are arranged at an acute angle to each other and thus have a V-shaped arrangement. The flow direction of the cassette filter is usually from the wide side of the V-shape to the tip of the V-shape. The air to be filtered then passes through the opening between the two filter elements into the filter. The corresponding V-shaped arrangement of the individual filter elements can be referred to as a filter pack. The filter elements adjoining one another are connecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/52
CPCB01D46/522B01D46/523B01D46/121B01D29/21B01D2201/12B01D2201/30B01D2201/605
Inventor R·塔珀
Owner CARL FREUDENBERG KG
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