US 11,849,716 B2
Insect guard for an aspirated smoke, gas, or air quality monitoring systems and devices
Kemal Ajay, Mount Waverley (AU); and Deepakumar Subbian, Féchy (CH)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Jan. 25, 2022, as Appl. No. 17/583,735.
Claims priority of provisional application 63/300,161, filed on Jan. 17, 2022.
Prior Publication US 2023/0225307 A1, Jul. 20, 2023
Int. Cl. A01M 29/34 (2011.01); G08B 17/10 (2006.01)
CPC A01M 29/34 (2013.01) [G08B 17/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An aspirated smoke, gas, or air quality monitoring unit, comprising:
a detector module that includes at least one particulate sensing chamber within the detector module and an air inlet connecting a sampling tube to the particulate sensing chamber allowing communication of air from the sampling tube to the particulate sensing chamber; and
a spiral shaped insect guard positioned within the inlet, wherein an interior surface of the inlet has a ledge formed thereon and where the ledge is shaped to allow a portion of an outer surface of the insect guard to rest on the ledge.