PROBLEM TO BE SOLVED: To provide a buffer tank for an oxygen enricher, having high pressure resistance.SOLUTION: A buffer tank 10 for an oxygen enricher includes a cylindrical first oxygen tank 11 having an inflow port 13 and a cylindrical second oxygen tank 12 having an outflow port 14. The first oxygen tank 11 and the second oxygen tank 12 are arranged adjacent to each other so that the respective cylindrical external surfaces are in contact with each other. A communication path 15 is formed for communicating the first oxygen tank 11 and the second oxygen tank 12 with each other at the contact part.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】耐圧性の高い酸素濃縮器用のバッファタンクを提供する。【解決手段】酸素濃縮器用のバッファタンク１０が、流入ポート１３を備えた円筒状の第１酸素タンク１１と流出ポート１４を備えた円筒状の第２酸素タンク１２とを具備し、第１酸素タンク１１と第２酸素タンク１２とが、互いの円筒状の外面が接するように隣接して配置され、接する部分において第１酸素タンク１１と第２酸素タンク１２とを連通する連通路１５が形成されている。【選択図】図３
