Method and device for filtering contaminated air
AssigneeBSH Bosch und Siemens Hausgerate GmbH
InventorsEgon Feisthammel, Dieter Rosmann
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Abstract
A method and a device for filtering polluted air, in which the air is successively subjected to the processes of extracting grease/fat and water, drying air still containing residual humidity, and adsorbing smells/odors. The filter device includes, in a direction of flow a vortex filter, layers of expanded metal, a filter for drying the air, and an odor filter, all in a filter housing. The filter for drying the air and the odor filter are, preferably, combined in a filter cassette that is disposed on the filter housing such that it can be changed/replaced.
Claims39
A method for filtering contaminated air, which comprises:
- passing contaminated air through a filter and separating contaminants by consecutively:
- separating grease and water;
- drying air still containing a residual moisture;
- and
- adsorbing odors.
The method according to claim 2, which further comprises carrying out the separating, drying, and adsorbing steps within a filter housing.
An air filtering device, comprising:
- a plurality of filter elements filtering contaminated air passed therethrough in an airflow direction, said elements including a vortex filter, a grease separation filter, an air drying filter, and an odor filter disposed consecutively in said airflow direction and thereby separating contaminants by consecutively separating grease and water, drying air still containing a residual moisture, and adsorbing odors.
The device according to claim 32, wherein said filter cartridge has a fill level indicator for a salt region of said cartridge.
Dependencies are inferred from the claim text.