公开(公告)号：US12072118B2

公开(公告)日：2024-08-27

申请号：US17584415

申请日：2022-01-26

申请人： Carl Freudenberg KG

发明人： Uwe Haefner ,  Sascha Blauth ,  Maik Sieh

IPC分类号： F24F11/65 ,  B60H1/24 ,  F24F7/003 ,  F24F7/06 ,  F24F8/10 ,  F24F11/526 ,  F24F13/10 ,  B60H3/06 ,  F24F11/00 ,  F24F120/10 ,  F24F130/00

CPC分类号： F24F11/65 ,  B60H1/24 ,  F24F7/003 ,  F24F7/06 ,  F24F8/10 ,  F24F11/526 ,  F24F13/10 ,  B60H3/0608 ,  F24F2011/0002 ,  F24F2120/10 ,  F24F2130/00

摘要： The invention relates to a method for operating a ventilation system for indoor air in an indoor space, in particular a motor vehicle. The method comprises the steps of: providing a fresh air portion of supplied fresh air and a recirculated air volume flow according to a predetermined or selected operating strategy; determining settings for a recirculated air actuator for adjusting a fresh air portion, in particular a recirculated air flap or a recirculated air valve, and a fan power of a fan for adjusting a mixed air volume flow (QM) of supplied recirculated and fresh air; increasing the fresh air portion and/or the mixed air volume flow (QM) as a function of a pathogen filtration efficiency of a cabin filter and a predetermined contamination prevention volume flow as a pathogenic indoor concentration limit value (CP) for a maximum concentration of pathogenic aerosols.

公开(公告)号：US20220008854A1

公开(公告)日：2022-01-13

申请号：US17367436

申请日：2021-07-05

申请人： Carl Freudenberg KG

发明人： Uwe Haefner ,  Heiko Schacht ,  Ilker Uenen ,  Sascha Blauth

IPC分类号： B01D46/00 ,  A61L9/16 ,  B01D39/00

摘要： A method includes: using a planar substrate having at least one acid-functionalized layer including at least one first acid having a pks1 value of 0 to 7 and at least one different second acid or derivative thereof selected from a group consisting of C8 to C18 fatty acids, esters, amides, and mixtures thereof, as a filter medium for depleting viruses from air and other gases.

公开(公告)号：US20220243946A1

公开(公告)日：2022-08-04

申请号：US17584415

申请日：2022-01-26

申请人： Carl Freudenberg KG

发明人： Uwe Haefner ,  Sascha Blauth ,  Maik Sieh

IPC分类号： F24F11/65 ,  B60H1/24 ,  F24F7/003 ,  F24F8/10 ,  F24F7/06 ,  F24F11/526 ,  F24F13/10

摘要： The invention relates to a method for operating a ventilation system for indoor air in an indoor space, in particular a motor vehicle. The method comprises the steps of: providing a fresh air portion of supplied fresh air and a recirculated air volume flow according to a predetermined or selected operating strategy; determining settings for a recirculated air actuator for adjusting a fresh air portion, in particular a recirculated air flap or a recirculated air valve, and a fan power of a fan for adjusting a mixed air volume flow (QM) of supplied recirculated and fresh air; increasing the fresh air portion and/or the mixed air volume flow (QM) as a function of a pathogen filtration efficiency of a cabin filter and a predetermined contamination prevention volume flow as a pathogenic indoor concentration limit value (CP) for a maximum concentration of pathogenic aerosols.

公开(公告)号：US20210213379A1

公开(公告)日：2021-07-15

申请号：US17129960

申请日：2020-12-22

申请人： Carl Freudenberg KG

发明人： Ilker Uenen ,  Sascha Blauth ,  Uwe Haefner

IPC分类号： B01D46/00 ,  B32B5/02 ,  B60H3/06 ,  B32B7/12 ,  B32B5/30

摘要： A filter medium includes: a functional layer; and two nonwoven layers. The functional layer is arranged between the nonwoven layers. The functional layer includes antiallergenic substances. The antiallergenic substances comprise a pourable or free-flowing solid. In an embodiment, the solid comprises a granulate. In an embodiment, the antiallergenic substances include polyphenols or fruit acids.