INJECTION NOZZLE APPARATUS

PROBLEM TO BE SOLVED: To provide an injection nozzle apparatus having high flow-straightening effect and capable of increasing the flow rate from an injection port while reducing pressure loss. SOLUTION: This jetting nozzle apparatus is provided with a polygonal cross-section inner pipe 1 having a fluid supply port and a polygonal cross-section outer pipe 3 surrounding the inner pipe, a slit-like injection part 4 formed on one corner of the outer pipe along the longitudinal direction and opening parts 2 being most apart from the slit-like injection part 4 and formed zigzag on the side walls adjacent to a corner part of the inner pipe 1. The inner pipe 1 and the outer pipe 3 are arranged linearly symmetrically and in the similar figure around the slit-like injection part 4 in the cross-sectional structure. The opening parts 2 are arranged zigzag on the adjacent 2 side walls. The injection nozzle apparatus is constituted of screw members 10c, 10d, 12c, 12d, 13a and 13b and can be provided with an opening width adjusting means for adjusting the opening width of the slit-like injection part 4. COPYRIGHT: (C)2005,JPO&NCIPI