PROBLEM TO BE SOLVED: To generate a vortex ring in a stable state in a vortex ring generator and convey it to an intended place. SOLUTION: The extrusion volume is V (m3), the diameter of the discharge port (25) is D (m), the length of a cylinder having a diameter D and a volume V is L (m), and the Reynolds number of the gas to be discharged. Is set to Re, the values are set to satisfy the relations of 500 ≦ Re ≦ 3000 and 0.5 ≦ L / D ≦ 2.0. [Selection diagram] FIG.【課題】渦輪発生装置において、渦輪を安定した状態で生成し、意図した場所に搬送する。【解決手段】押出体積をＶ（ｍ３），放出口（25）の直径をＤ（ｍ），直径がＤで体積がＶの円柱の長さをＬ（ｍ），放出される気体のレイノルズ数をＲｅとすると、５００≦Ｒｅ≦３０００，及び０．５≦Ｌ/Ｄ≦２．０の関係を満たすように設定する。【選択図】図３
