Stovetop fire suppression system and method
View Patent ↗A stovetop fire suppression system is provided which senses the stovetop environment, assesses a fire condition, and limits a fuel or electricity heat source upon determination of a stovetop fire condition. Either, or both of, sound or heat may be monitored for the presence of a fire. Sensed day can be processed for spectral density or rate of rise for subsequent comparison to thresholds or predetermined density values. Upon determination of a stovetop fire condition a fire suppression module triggers, for example, a valve or switch to extinguish the stovetop heat source.
1. A stovetop fire suppression system, comprising:
a fire suppression control device comprising:
a processor;
a plurality of sensors comprising: at least one microphone and at least one temperature sensor;
a user interface;
a memory;
a fire suppression module; and
a database comprising fire detection data and relational data,
wherein, the processor determines a fire condition based on comparing at least two sensed conditions on a stovetop to respective relational data; and
a fire suppressor device comprising a fuse and fire suppressing powder, wherein
the fire suppressor device releases a fire suppressing powder when a flame contacts the fuse and emits an audible blast upon activation of the fire suppressor device; and
wherein, the fire suppression control device sends a signal which activates a valve or a switch turning off energy to the stove based on the processor's determination of a fire condition.
2. The fire suppression system of claim 1 , wherein the processor comprised in the fire suppression control device calculates a rate of rise of sensed temperature and compares calculated rate of rise of sensed temperature to respective relational data to determine a fire condition.
3. The fire suppression system of claim 1 , wherein the fire suppression control device comprises a processor which compares a sensed temperature level to respective relational data to detect a fire condition.
4. The fire suppression system of claim 1 , wherein the processor comprised in the fire suppression control device calculates a rate of rise of sensed temperature and compares calculated rate of rise of sensed temperature to respective relational data and compares a sensed temperature level to another respective relational data to determine a fire condition based on both comparisons.
5. The fire suppression system of claim 1 , wherein:
the fire suppression control device comprises a signal processing module, which generates a power spectral signal from a sensed sound signal; and
the fire suppression control device compares the generated signal to a relational spectral data to determine a fire condition.
6. The fire suppression system of claim 1 , further comprising:
a switch state memory, wherein the switch state memory stores a state of the valve or of the switch before a power loss.