Patent ID: 8610601

Claim:
A kitchen hood assembly having a fire suppression system with built in redundancy comprising: a kitchen exhaust hood; one or more fire suppression devices associated with the kitchen exhaust hood for extinguishing a fire within the vicinity of the exhaust hood; a series of fire sensors or manual actuators associated with the one or more fire suppression devices; a switching circuit including first and second parallel conductors and a series of parallel switches connected between the conductors; each switch of the switching circuit being linked to one of the fire sensors or manual actuators such that the actuation of one of the fire sensors or manual actuators causes one of the switches of the switching circuit to be actuated; a first actuating circuit operatively interconnected between the first conductor of the switching circuit and the fire suppression devices for actuating the fire suppression devices; a second actuating circuit operatively interconnected between the first conductor of the switching circuit and the fire suppression devices for actuating the fire suppression devices; a voltage input for enabling a voltage to be applied to the first and second actuating circuits; and wherein the switching circuit and first and second actuating circuits are configured such that a break at one point on the first conductor, including a break at a point between any two points where the switches of the switching circuit connect to the first conductor, enable the first or second actuating circuits to actuate the one or more fire suppression devices in response to any one of the fire sensors or manual actuators actuating any one of the switches of the switching circuit.