DOUBLE TUBE TYPE ICE MAKING MACHINE

To provide a double tube type ice making machine which can effectively utilize a heat exchanger comprising an inner tube and an outer tube.SOLUTION: A double tube type ice making machine includes: an inner tube 12; and an outer tube 13 provided coaxially with the inner tube 12 at the radial outer side of the inner tube 12. A cooled object flows in the inner rube 12 and a refrigerant flows in a space between the inner tube 12 and the outer tube 13. A nozzle 11 for jetting the refrigerant into the space is provided on a wall 13a of the outer tube 13. The nozzle 11 has a jetting port 25 which jets the refrigerant in a radiation direction including at least an axial direction and a circumferential direction of the inner tube 12.SELECTED DRAWING: Figure 4 【課題】内管と外管とからなる熱交換器を有効に利用することができる二重管式製氷機を提供する。【解決手段】内管１２と、この内管１２の径方向外側において当該内管１２と同軸に設けられた外管１３とを備えており、前記内管１２内に被冷却物を流し、前記内管１２と外管１３との間のスペースに冷媒を流す二重管式製氷機。前記スペースに冷媒を噴出するノズル１１が前記外管１３の壁１３ａに設けられ、前記ノズル１１は、前記内管１２の少なくとも軸方向及び周方向を含む放射方向に冷媒を噴出する噴出口２５を有する。【選択図】図４