COOLING DEVICE AND COOLING METHOD OF HOT ROLLED COIL

To improve cooling efficiency of the whole coil row in cooling of a hot rolled coil in a coil stockyard using a forced convection generator.SOLUTION: A cooling device 1 is provided with a forced convection generator 10 for blowing out a coolant from a blowout port and generating forced convection. In the cooling device 1, the forced convection generator 10 is arranged on the side part of the coil rows 90 in side view of the coil rows 90 that are rows of a hot rolled coil 91 and between the adjacent coil rows 90 in plan view of the coil rows 90, and a center C of the blowout port of the forced convection generator 10 is positioned in each region An in a height direction, and the following expression (1) is satisfied: Zn-2Rn≤An≤Zn-Rn (n=1) Zn-1-Rn-1≤An≤Zn-Rn (n≥2). In the expression (1), Zn: height from lower end of first stage hot rolled coil 91 to upper end of n-th stage hot rolled coil 91. Rn: coil radius of n-th stage hot rolled coil 91.SELECTED DRAWING: Figure 3 【課題】強制対流発生装置を用いたコイル置場における熱延コイルの冷却において、コイル列全体の冷却効率を向上させる。【解決手段】冷却装置１において、吹出口から冷媒を吹き出して強制対流を発生させる強制対流発生装置１０を設け、強制対流発生装置１０が、熱延コイル９１の列であるコイル列９０の側面視において該コイル列９０の側方、かつ、コイル列９０の平面視において隣り合うコイル列９０の間に配置され、下記式（１）を満たす、高さ方向における各領域Ａn内に強制対流発生装置１０の吹出口の中心Ｃが位置するように冷却装置１を構成する。式（１）：Ｚn−２Ｒn≦Ａn≦Ｚn−Ｒn（ｎ＝１）Ｚn-1−Ｒn-1≦Ａn≦Ｚn−Ｒn（ｎ≧２）Ｚn：１段目の熱延コイル９１の下端からｎ段目の熱延コイル９１の上端までの高さＲn：ｎ段目の熱延コイル９１のコイル半径【選択図】図３