US 12,013,363 B2
Combustible gas sensor
Jon K. Evju, Shakopee, MN (US); Gary Follett, Saint Paul, MN (US); Thi A. Nguyen, Champlin, MN (US); David P. Potasek, Lakeville, MN (US); Roger Alan Backman, Minneapolis, MN (US); Anand Venkatesh Sankarraj, Eden Prairie, MN (US); and Siqi Wei, Minneapolis, MN (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 17/059,087
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
PCT Filed Nov. 20, 2019, PCT No. PCT/US2019/062368
§ 371(c)(1), (2) Date Nov. 25, 2020,
PCT Pub. No. WO2020/117472, PCT Pub. Date Jun. 11, 2020.
Claims priority of provisional application 62/774,581, filed on Dec. 3, 2018.
Prior Publication US 2021/0255131 A1, Aug. 19, 2021
Int. Cl. G01N 27/16 (2006.01); G01N 25/30 (2006.01); G01N 33/00 (2006.01)
CPC G01N 27/16 (2013.01) [G01N 25/30 (2013.01); G01N 33/0027 (2013.01); G01N 33/005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A combustible gas sensor, comprising:
a reference sensor, comprising:
a first substrate having a first substrate first surface,
a first insulating layer disposed on the first substrate first surface,
a first heater at least one of embedded within the first insulating layer and disposed on the first insulating layer, and
a first electrical connector that extends through the first insulating layer and is connected to the first heater; and
an active sensor disposed adjacent to the reference sensor, the active sensor comprising:
a second substrate having a second substrate first surface,
a second insulating layer disposed on the second substrate first surface,
a second heater at least one of embedded within the second insulating layer and disposed on the second insulating layer,
a catalyst layer disposed on the second insulating layer,
an anti-poison layer disposed on the catalyst layer, the anti-poison layer defining a plurality of openings, and the anti-poison layer made of a non-catalytic porous material, and
a second electrical connector that extends through the second insulating layer and is connected to the second heater,
wherein the anti-poison layer is laterally disposed between the first electrical connector and the second electrical connector.