US 12,465,926 B2
Cabin air filter with polarisation
Stefan Robert, Nordwalde (DE); Andreas Borchard, Coesfeld (DE); Martin Rölver, Havixbeck (DE); and Tom Klaver, Cologne (DE)
Assigned to HENGST SE, Münster (DE)
Filed by HENGST SE, Münster (DE)
Filed on Aug. 16, 2024, as Appl. No. 18/807,534.
Application 18/807,534 is a continuation of application No. PCT/EP2023/053663, filed on Feb. 14, 2023.
Claims priority of application No. 22157505 (EP), filed on Feb. 18, 2022; and application No. 22182008 (EP), filed on Jun. 29, 2022.
Prior Publication US 2025/0083155 A1, Mar. 13, 2025
Int. Cl. B03C 3/68 (2006.01); B03C 3/38 (2006.01); B03C 3/62 (2006.01); B03C 3/64 (2006.01); B03C 3/66 (2006.01); B03C 3/82 (2006.01); B60H 3/00 (2006.01)
CPC B03C 3/68 (2013.01) [B03C 3/38 (2013.01); B03C 3/62 (2013.01); B03C 3/64 (2013.01); B03C 3/66 (2013.01); B03C 3/82 (2013.01); B60H 3/0071 (2013.01); B03C 2201/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A gas filter having an upstream facing side, a downstream facing side, and a peripheral narrow facing side connecting the upstream facing side and the downstream facing side, the gas filter comprising at least:
a filter medium configured to filter a gas flow moving from the upstream facing side through the filter medium to the downstream facing side, wherein the filter medium comprises and/or forms a capacitor, and wherein the capacitor has at least a first electrode, a second electrode, and a dielectric medium, wherein the first electrode, the second electrode and/or the dielectric medium is structured as a filter layer,
at least a non-conducting first support, wherein the capacitor is attached to the non-conducting first support,
a first electrical contact at a first location,
a second electrical contact at a second location,
a branching point, a first resistive component having a first resistance R1, and a second resistive component having a second resistance R2,
wherein:
each of the first electrical contact and the second electrical contact is attached to the non-conducting first support and/or is unitary with the non-conducting first support,
each of the branching point, the first resistive component, and the second resistive component is attached to the non-conducting first support or is a part of the non-conducting first support,
the first electrical contact is electrically connected via the first resistive component to the branching point, the second electrical contact is electrically connected via the second resistive component to the branching point and the first electrode is electrically connected to the branching point, and
the second electrode is electrically connected to the second electrical contact.