US 12,253,457 B2
Environmental enclosure for a transport gas sensor
Michael J. Birnkrant, Wethersfield, CT (US); and Marcin Piech, East Hampton, CT (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
Filed on Sep. 21, 2022, as Appl. No. 17/949,772.
Claims priority of provisional application 63/250,391, filed on Sep. 30, 2021.
Prior Publication US 2023/0094980 A1, Mar. 30, 2023
Int. Cl. G01N 21/25 (2006.01); G01N 21/35 (2014.01); G01N 21/3504 (2014.01)
CPC G01N 21/255 (2013.01) [G01N 21/3504 (2013.01); F25B 2500/222 (2013.01); G01N 2201/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A refrigerant detection assembly operable to detect refrigerant mixed with air, the refrigerant detection assembly comprising:
a housing having an internal cavity fluidly connected with an ambient atmosphere surrounding the housing via an opening;
a subassembly mounted within the internal cavity, the subassembly comprising:
a subassembly housing having a top sensor cover and a corresponding bottom sensor cover, wherein when the top sensor cover and the bottom sensor cover are coupled define an air chamber therebetween, the top sensor cover including an opening such that the air chamber is fluidly connected with the internal cavity;
a non-dispersive infrared sensor operably coupled to the air chamber;
a printed circuit board operably coupled to the non-dispersive infrared sensor; and
a heat conduction plate mechanically and thermally coupled to the printed circuit board;
at least one insulator arranged within the internal cavity at a position between a top of the subassembly housing and the housing to dampen any vibrations that may be transferred to the subassembly; and
a shell connectable to the housing in overlapping arrangement with the opening, the shell having at least one shell opening formed therein such that a flow path extends from the shell opening, through the opening formed in the housing to the internal cavity, and into the air chamber.