US 11,865,482 B2
Filter module comprising sensor and method for determining the state of a filter element
Stefan Kluck, Reilingen (DE); and Renate Tapper, Bensheim (DE)
Assigned to CARL FREUDENBERG KG, Weinheim (DE)
Filed by Carl Freudenberg KG, Weinheim (DE)
Filed on Feb. 11, 2021, as Appl. No. 17/173,211.
Claims priority of application No. 20 156 997 (EP), filed on Feb. 12, 2020.
Prior Publication US 2021/0245083 A1, Aug. 12, 2021
Int. Cl. B01D 46/00 (2022.01); B01D 46/12 (2022.01); B01D 46/24 (2006.01); B01D 46/44 (2006.01); B01D 46/52 (2006.01); B01D 46/58 (2022.01)
CPC B01D 46/0086 (2013.01) [B01D 46/12 (2013.01); B01D 46/2411 (2013.01); B01D 46/444 (2013.01); B01D 46/446 (2013.01); B01D 46/521 (2013.01); B01D 46/58 (2022.01); B01D 2267/30 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A filter module for filtering a fluid flow, comprising:
a plurality of filter elements arranged parallel to one another in a fluid channel,
wherein a sensor is mounted on each filter element of the plurality of filter elements, each sensor being configured to determine a loading state of a corresponding filter element,
wherein each of the plurality of filter elements comprises a filter cartridge including pleated filter medium,
wherein each sensor comprises a flow sensor,
wherein each sensor is positioned on a clean gas side of the corresponding filter element,
wherein each filter cartridge comprises a round flange having a central cut-out, and the sensor is provided in each case in a region of the flange, and
wherein each sensor is configured to measure a dynamic pressure of the fluid flow at the flange.