FINE BUBBLE GENERATOR

To provide a fine bubble generator having a simple structure and being easily attachable.SOLUTION: A fine bubble generator is made of a flow channel member 2 and an upstream side joint member 3 and a downstream side joint member 4 having an attachment part 13 and an attachment part 17 attachable with an elastic tube. A flow channel 5 in which water flows is formed at the insides of the flow channel member 2, the upstream side joint member 3, and the downstream side joint member 4. The flow channel member 2 has a contraction part 7 in which a cross-sectional area is contracted from the upstream side of the flow channel 5 toward a downstream side, an enlarged part 8 in which a cross-sectional area is enlarged from the upstream side of the flow channel 5 toward a downstream side, and a fine flow channel part 9 formed between the contraction part 7 and the enlarged part 8.SELECTED DRAWING: Figure 1 【課題】簡単な構造で容易に取付可能な微細気泡生成器を提供する。【解決手段】本発明の微細気泡生成器は、流路部材２と、弾性管を取付け可能な取付部１３や取付部１７を有する上流側継手部材３および下流側継手部材４と、を備え、流路部材２、上流側継手部材３および下流側継手部材４の内部には水が流動する流路５が形成され、流路部材２は、流路５の上流側から下流側に向かって断面積が縮小する縮小部７と、流路５の上流側から下流側に向かって断面積が拡大する拡大部８と、縮小部７と拡大部８との間に形成された細流路部９と、を有する構成としている。【選択図】図１