US 12,345,691 B2
Dust particulate separator for ducted smoke detectors
Len D. Seebaluck, Wake Forest, NC (US); and Aaron S. Rogers, Surf City, NC (US)
Assigned to Kidde Technologies, Inc., Wilson, NC (US)
Filed by Kidde Technologies Inc., Wilson, NC (US)
Filed on May 17, 2023, as Appl. No. 18/198,450.
Prior Publication US 2024/0385160 A1, Nov. 21, 2024
Int. Cl. G01N 1/10 (2006.01); G01N 33/00 (2006.01)
CPC G01N 33/0011 (2013.01) 20 Claims
OG exemplary drawing
 
1. A ducted smoke detector comprising:
a housing defining an interior cavity;
an air inlet in fluid communication with the interior cavity;
an air outlet in fluid communication with the interior cavity;
a smoke sensing chamber disposed in the interior cavity; and
a particulate separator disposed between and in fluid communication with the air inlet and the smoke sensing chamber in the interior cavity, the particulate separator comprising:
a shaft;
a perforated wall disposed around the shaft and extending from a first open end to a second open end, the perforated wall connected to the shaft and configured to rotate with the shaft; and
a plurality of deflection vanes disposed on the shaft and extending radially outward toward the perforated wall, the plurality of deflection vanes configured to rotate with the shaft and the perforated wall.