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

Claim 0:
1. A transport refrigeration unit (TRU), comprising:
a housing;
components supportively disposed in the housing and configured to condition an interior of a container; and
a fire detection and mitigation system comprising:
a fire detection sub-system which is partially disposable within the housing and configured to detect a thermal event therein; and
a mitigation sub-system coupled to the fire detection sub-system and configured to take a mitigation action responsive to the thermal event being sensed by the fire detection sub-system,
wherein:
the fire detection sub-system comprises a loop within the housing 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 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 the components by the safety controller.