PROBLEM TO BE SOLVED: To provide a jet bath apparatus which is easy to maintain, compact and simple in structure and enables discharge of diversified jet flows.SOLUTION: A jet nozzle has a running water introduction part, and a chamber extending in the axial direction of a tubular body and formed inside the tubular body, the running water introduction part has an upstream-side end portion where pressurized bathwater sent from a pressure device is introduced, and a lower-side end portion communicated with the chamber. The chamber has a channel cross section sudden expansion part provided at an axially upstream-side end portion and having a channel cross section suddenly expanded with respect to the downstream-side end portion of the running water introduction part, and a jet outlet opened to the axially downstream-side end portion, the channel of the running water introduction part is gradually narrowed from the upstream-side end portion towards the downstream-side end portion, a channel central line passing through the center of the channel cross section of the running water introduction part has a curvature, the downstream end position of the channel central line is accorded with the axial center of the chamber and the tubular body has attachable/detachable portions at the downstream-side tubular body and the upstream-side tubular body.COPYRIGHT: (C)2009,JPO&INPIT【課題】メンテナンス容易、小型且つ簡単な構造で、変化に富んだ噴流吐出を実現する噴流浴装置を提供する。【解決手段】噴流ノズルは、流水導入部と、筒体の軸方向に延在して筒体の内部に形成されたチャンバーとを有し、流水導入部は、加圧装置から送られる加圧浴槽水が導入される上流側端部と、チャンバーに連通する下流側端部とを有し、チャンバーは、軸方向の上流側端部に設けられ流水導入部の下流側端部に対して流路断面が急拡大された流路断面急拡大部と、軸方向の下流側端部に開口された噴出口とを有し、流水導入部の流路は上流側端部から下流側端部に向けて漸次細くなり、流水導入部の流路断面の中心を通る流路中心線は曲率を有し、流路中心線の下流端位置はチャンバーの軸中心に一致して、筒体は、下流側筒体と上流側筒体とに着脱可能な着脱部を有する。【選択図】図1
