Filter elements and housings for containing filter elements
A technology of filter elements and shells, which is applied in the field of filter elements and shells used to accommodate filter elements, which can solve the problems of accurate installation space fit, poor filtration efficiency of filter elements, etc., and achieve the effect of ensuring the same quality
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[0042] figure 1 A schematic perspective view of an embodiment of a filter insert 1 is shown. The filter insert 1 has a folded group 3 and a frame 7 . The frame 7 is shown as a square, wherein the lateral boundary surfaces 9 are arranged slightly obliquely. The frame 7 thus has a conical shape and has a trapezoidal cross-section parallel to the fold 5 . It can be seen that the interface 9 is at an angle α to the direction of flow through the fold pack 3 or the filter insert 1 . The angle α is between 10 and 45˚. The frame 7 is formed of plastic, for example. The frame 7 surrounds the folding group 3 laterally in this exemplary embodiment.
[0043] The fold group 3 comprises a filter material folded zigzag as a filter medium. The filter material can be a filter, a non-woven material, which is suitable for filtering raw fluids, such as the air in the vehicle, the outside air or also the combustion air of the vehicle. The folded pack 2 can in this case comprise a multilayer...
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