Pocket filters
In fluid technology, a pocket filter or bag filter is a filter in which the textile filter medium is shaped into pockets or bags. The fluid to be cleaned flows through the pocket from the inside to the outside. Pocket filters are used both as surface filters and as depth filters .
Layout and function
In addition to the separation task, the space available for the particle separation system, which leads to the need for differently designed filters, is decisive for the design of the filter medium. With the aid of a pocket filter, the filter media surface can be increased to a multiple of the inflow surface of the filter ( surface enlargement ). The basis for the production of pocket filters are textile filter media, which a manufacturer brings into the desired shape. The pockets can be produced using different methods, for example sewing or welding .
In surface filtration, the individual filter elements are usually arranged horizontally. The installation and removal of larger filter elements can cause difficulties.
The most common form of packaging for depth filters is pocket filters.
Pocket filters for depth filtration have a particularly high dust holding capacity .
Individual evidence
- ↑ DIN EN 14799: 2007-07 Air filters for general air cleaning; Terminology; Trilingual version EN 14799: 2006 . Beuth Verlag, Berlin. P. 19.
- ↑ a b c VDI 3677 sheet 2: 2004-02 Filtering separators; Depth fiber filters (filtering separators) . Beuth Verlag, Berlin. P. 42.
- ↑ VDI 3677 sheet 1: 2010-11 Filtering separators; Surface filters (Filtering separators; Surface filters) . Beuth Verlag, Berlin. P. 23.
- ↑ VDI 3677 sheet 1: 2010-11 Filtering separators; Surface filters (Filtering separators; Surface filters) . Beuth Verlag, Berlin. P. 29.
- ^ Ernst-Rudolf Schramek, Hermann Recknagel, Eberhard Sprenger: Pocket book for heating + air conditioning . 73rd edition. Oldenbourg Industrieverlag Munich 2007, ISBN 3-8356-3104-7 , p. 1198.