US 12,350,610 B2
Filter system and method for filtering
Sauli Larkiala, Aalto (FI)
Assigned to AALTO UNIVERSITY FOUNDATION SR, Aalto (FI)
Appl. No. 17/796,139
Filed by AALTO UNIVERSITY FOUNDATION SR, Aalto (FI)
PCT Filed Jan. 27, 2021, PCT No. PCT/FI2021/050053
§ 371(c)(1), (2) Date Jul. 28, 2022,
PCT Pub. No. WO2021/152213, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20205104 (FI), filed on Jan. 31, 2020.
Prior Publication US 2023/0058172 A1, Feb. 23, 2023
Int. Cl. B01D 35/12 (2006.01); B01D 29/52 (2006.01); B01D 29/66 (2006.01); B01D 36/00 (2006.01)
CPC B01D 35/12 (2013.01) [B01D 29/52 (2013.01); B01D 29/668 (2013.01); B01D 36/001 (2013.01); B01D 2201/184 (2013.01); B01D 2201/202 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A filter system for separating solid particles from a material to be filtered,
the filter system comprising:
a first filter (S1) and a second filter (S2) each comprising a housing accommodating therein a filter element, a dirty side (LP) before the filter element for receiving the material to be filtered, and a clean side (PP) after the filter element for outputting filtered material having passed through the filter, the material to be filtered being conducted from the dirty side (LP) of the filter through the filter element of the filter to the clean side (PP) of the filter;
channels for conducting the material to be filtered to the dirty side (LP) of each filter (S1, S2) and for conducting the filtered material out from the clean side (PP) of each filter (S1, S2);
valves for opening and closing the channels (K);
a first washing connection in which the clean side (PP) of the first filter (S1) is connectable with the clean side (PP) of the second filter (S2);
a second washing connection in which the clean side (PP) of the second filter (S2) is connectable with the clean side (PP) of the first filter (S1);
whereby in both of the washing connections the filtered material is configured to be conducted through the given filter (S1, S2) to be washed from the clean side (PP) to the dirty side (LP) thereof to remove particles from the filter (S1, S2) to be washed by counterflow washing.