Patent ID: 8349247

Claim:
A cooling apparatus for mixing and spraying air and water to cool a steel plate, wherein the cooling apparatus provides a stable spray pattern and prevents a second-wind phenomenon, comprising: an air reservoir formed at an air spray surface of an air header, wherein the air header comprises a plurality of air feed pipes arranged at the air reservoir; a cooling water reservoir formed around a plurality of cooling water spray nozzles in a water header, wherein the cooling water spray nozzles are connected to the air header; a cooling water feed pipe; and a fluid nozzle control mechanism; wherein each water spray nozzle has an air introduction port at its top, cooling water introduction ports at a portion of the nozzle body, and a discharge port for spraying air and water at its bottom, wherein an area around the cooling water introduction ports of said cooling water spray nozzles forms the water header, wherein the cooling water feed pipe has an outlet positioned below the water introduction ports of the cooling water spray nozzles, and wherein an air vent valve is provided in a middle of said cooling water feed pipe.