Patent ID: 11883697
Assignee: CARRIER CORPORATION
Field: Environmental technology (Chemistry)
Classification: CPC A | IPC A

Claim 9:
10. A transport refrigeration unit (TRU) fire detection and mitigation system, comprising:
a fire detection sub-system; and
a mitigation sub-system coupled to the fire detection sub-system,
the fire detection sub-system comprising a loop disposable within a housing of a TRU with a nominal pressure which is increasable responsive to a thermal event within the housing and a switch which is actuatable by an increased pressure in the loop to activate the mitigation sub-system, and
the mitigation sub-system being configured to take a mitigation action responsive to activation by the switch and the loop comprises piping charged with gas that begins and terminates at the switch and follows a serpentine configuration with multiple hairpin turns, and
the mitigation sub-system comprises a safety controller and the mitigation action comprises a modification of gas flow to TRU components by the safety controller.