A kitchen hood fire suppression system is a specialized fire protection system designed to automatically detect and suppress fires that occur in commercial kitchens, particularly in cooking equipment such as fryers, stoves, grills and ovens.

Main Components:

1. Hood & Ductwork – Collects smoke, heat and grease-laden vapors.
2. Detection System – Heat sensors or fusible links that trigger when a certain temperature is reached.
3. Suppression Agent Tanks – Usually contain wet chemical agents (potassium carbonate or potassium acetate) that are effective against grease fires.
4. Nozzles & Piping – Direct the chemical agent onto cooking appliances, hood and ducts.
5. Manual Pull Station – Allows staff to activate the system manually in case of fire.
6. Control Panel / Release Mechanism – Automatically activates suppression and shuts off gas/electric supply to equipment.

How It Works:

1. Detection – Heat from a fire melts fusible links or triggers sensors.
2. Activation – The system automatically releases the wet chemical agent.
3. Suppression – The agent discharges through nozzles, forming a soapy layer on hot oil/grease to smother the fire.
4. Shutoff – Gas or electric supply to cooking equipment is automatically cut off.
5. Post-Fire Safety – Fire alarm is activated, alerting occupants and possibly the fire department.

Benefits:

• Specifically designed for grease fires (Class K).
• Prevents fire from spreading through the hood and ductwork.
• Automatic & fast response.
• Meets NFPA 17A & NFPA 96 standards.