Gaseous and liquid agent fire suppression system using emitters with closed end cavity deflector

A fire suppression system, comprising:

• a gaseous extinguishing agent;
• a liquid extinguishing agent;
• at least one emitter for atomizing and entraining said liquid extinguishing agent in said gaseous extinguishing agent and discharging said gaseous and liquid extinguishing agents on a fire;
• a gas conduit conducting said gaseous extinguishing agent to said emitter;
• a piping network conducting said liquid extinguishing agent to said emitter;
• a first valve in said gas conduit controlling pressure and flow rate of said gaseous extinguishing agent to said emitter;
• a second valve in said piping network controlling pressure and flow rate of said liquid extinguishing agent to said emitter;
• a pressure transducer measuring pressure within said gas conduit;
• a fire detection device positioned proximate to said emitter, said emitter comprising:
• a nozzle having an inlet and an outlet and an unobstructed bore therebetween, said outlet having a diameter, said inlet being connected in fluid communication with said gas conduit downstream of said first valve;
• a duct connected in fluid communication with said piping network downstream of said second valve, said duct having an exit orifice positioned adjacent to said nozzle outlet;
• a deflector surface positioned facing said nozzle outlet in spaced relation thereto and having a first surface portion comprising a flat surface oriented substantially perpendicularly to a gas flow from said nozzle, and a second surface portion comprising a curved surface surrounding said flat surface, said flat surface having minimum diameter approximately equal to said outlet diameter;
• a closed end cavity positioned within said deflector surface and surrounded by said flat surface;
• and
• a control system in communication with said first and second valves, said pressure transducer and said fire detection device, said control system receiving signals from said pressure transducer and said fire detection device and opening said valves in response to a signal indicative of a fire from said fire detection device.