F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
F24C 15/20 (2006.01)
Patent
CA 2475259
The invention relates to an extractor hood for extracting and/or purifying a carrier that is contaminated with solid and/or liquid substances. The invention also relates to a method for extracting and/or purifying a carrier that is contaminated with solid and/or liquid substances. In order to improve the extraction and/or purification output of an extractor hood and simultaneously to reduce the amount of maintenance required, the invention provides an extractor hood (1) and a method of using a pre-filtering unit (11) upstream of the filter unit (4), whereby at least already a partial flow (Ph) of the carrier to be extracted and/or to be purified is purified to a certain degree already before it reaches the filter unit (4) that is configured as the main filter.
La présente invention concerne une hotte d'extraction destinée à aspirer et/ou purifier une substance porteuse qui est contaminée par des substances solides et/ou liquides. L'invention concerne également un procédé d'extraction et/ou de purification d'une substance porteuse qui est contaminée avec des substances solides et/ou liquides. Pour que la puissance d'extraction et/ou de purification d'une hotte d'extraction soit améliorée, et que, simultanément, le travail de maintenance d'une telle hotte soit réduit, il est proposé, selon l'invention, d'utiliser une hotte d'extraction (1) et de mettre en oeuvre un procédé selon lequel, à l'aide d'une unité de préfiltration (11) montée en amont de l'unité de filtration (4), déjà au moins un courant partiel (P¿h?) de la substance porteuse à aspirer et/ou à purifier est purifié déjà à un certain degré, avant son entrée dans l'unité de filtration (4) constituant le filtre principal.
Klemm Jochen
Meinhardt Gert
Bsh Bosch Und Siemens Hausgeraete Gmbh
Fetherstonhaugh & Co.
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