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US 7,396,374 B2Granted
Controlled flow grease filter for domestic extractor hoods
AssigneeElica S.P.A.
InventorsAntonio Ranalli, Matteo Tarantini
Life of this patent
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AssigneeElica S.P.A.
InventorsAntonio Ranalli, Matteo Tarantini
Estimating the term…
A grease filter (1) for domestic extractor hoods comprises at least two walls (2, 3) placed face to face and having first through openings (4) made in them arranged in such a way as to cause sudden changes of direction in the fumes flowing through them. At least one of the walls (2, 3) includes a plurality of second openings (5) whose flow section is considerably narrower than that of the first openings (4). The first openings (4) and the second openings (5) combine to divide the total flow passing through the filter (1) into two component flows which are in turn divided into a first plurality of macroscopic flows (6) following a labyrinth path through the first openings (4) and a second plurality of microscopic flows (7) passing through the second openings (5).
A grease filter for domestic extractor hoods, comprising at least two walls (2, 3) placed face to face and having first through openings (4) made in them arranged in such a way as to cause sudden changes of direction in the fumes flowing through them, wherein at least one of these walls (2, 3) includes a plurality of second openings (5) whose flow section is narrower than the flow section of the first openings (4), the first openings (4) and the second openings (5) combining to divide the total flow passing through the filter into two component flows which are in turn divided into a first plurality of macroscopic flows (6) following a labyrinth path through the first openings (4) and a second plurality of microscopic flows (7) passing through the second openings (5).
Dependencies are inferred from the claim text.