US 12,478,235 B2
Vacuum cleaner having adaptive dirt identification and method for operating the vacuum cleaner
Maximilian Fremerey, Saal an der Saale (DE); Simon Richter, Gersfeld (DE); and Andreas Seufert, Poppenhausen (DE)
Assigned to BSH Hausgeräte GmbH, Munich (DE)
Filed by BSH Hausgeräte GmbH, Munich (DE)
Filed on Mar. 4, 2024, as Appl. No. 18/594,267.
Claims priority of application No. 10 2023 201 965.5 (DE), filed on Mar. 3, 2023.
Prior Publication US 2024/0292989 A1, Sep. 5, 2024
Int. Cl. A47L 9/28 (2006.01); A47L 9/04 (2006.01)
CPC A47L 9/281 (2013.01) [A47L 9/0477 (2013.01); A47L 9/2826 (2013.01); A47L 9/2842 (2013.01); A47L 9/2847 (2013.01); A47L 9/2857 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A vacuum cleaner for sucking up dirt from a surface, the vacuum cleaner comprising:
a dirt sensor configured to determine a dirt value indicating an amount of the dirt currently being sucked up;
a floor sensor configured to determine a degree of hardness indicating the hardness of a currently vacuumed surface;
a display; and
a controller configured to operate in at least one automatic mode;
said controller, upon the degree of the hardness being below a soft-bottom limit value:
outputting the dirt value on said display, and
otherwise determining a reduction value of the dirt value weighted by a weighting value being less than one, and outputting the reduction value on said display;
said controller configured to be switched at least between said at least one automatic mode and a real mode, and in said real mode said controller configured, upon the degree of the hardness being above the soft-bottom limit value, to output the dirt value in lieu of the reduction value on said display.