Patent ID: 11927354
Assignee: CARRIER CORPORATION
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 17:
18. An air conditioning or heat pump system, comprising
a first heat exchanger comprising a conditioned air flow path on a first side of the heat exchanger, and a refrigerant flow path comprising a flammable refrigerant on a second side of the heat exchanger in thermal communication with the first side;
an enclosed fluid flow path comprising the flammable refrigerant connecting the refrigerant flow path of the first heat exchanger with a second heat exchanger in thermal communication with an external heat source or heat sink; and
a monitoring system including:
a first sensor configured to measure a first parameter indicative of the presence flammable compounds in a space around a potential leak source of a flammable compound;
a second sensor configured to measure a second parameter in the space around the potential leak source; and
a controller configured to characterize the prospective presence of the flammable compound determined by measurement of the first parameter, in conjunction with the measurement of the second parameter, as an actual presence of the flammable compound or as a false alarm;
wherein the first sensor and the second sensor are disposed in a conduit on the conditioned air flow path comprising an inlet and an outlet, and the first sensor and the second sensor are disposed in the conduit with the second sensor downstream from the first sensor with respect to a direction of flow from the inlet to the outlet.