Patent · US Active

Method and device for operating a ventilation system for air in an indoor space

US12072118B2 · kind B2 · utility

0Cited by

6References

9Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Uwe Haefner · Kehl, DE
Sascha Blauth · Rodenbach, DE
Maik Sieh · Sandhausen, DE

Key dates

Filing date	Jan 26, 2022
Grant date	Aug 27, 2024
Priority date	—
Expiry date	Jul 31, 2042

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF24F2130/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.