PROBLEM TO BE SOLVED: To provide a bath adapter which enables fine bubbles to be efficiently dispersed to the whole of the inside of a bathtub.SOLUTION: The bath adapter includes: a spouting port 65j spouting hot water supplied from a bath outgoing pipe 29 to the inside of a bathtub 31 outgoing flow passages (63a, 65a) through which the hot water flows toward the spouting port 65j and a porous body 67a disposed to the outgoing flow passages (63a, 65a) and discharging air sent under pressure into the hot water flowing through the outgoing flow passages (63a, 65a) as fine bubbles. The outgoing flow passages (63a, 65a) are each provided with a squeezed part 63n where cross-sectional areas of the outgoing flow passages (63a, 65a) are reduced, at a side more upstream than the porous body 67a, thereby the flowing ratio of the hot water flowing on the outer surface of the porous body and spouted into the inside of the bathtub 31 is increased, so that the hot water in which the fine bubbles are discharged, can be efficiently dispersed in the bathtub 31.COPYRIGHT: (C)2015,JPO&INPIT【課題】浴槽内の全体に効率よく微細気泡を拡散させることが可能な風呂アダプタを提供すること。【解決手段】風呂往き管29から供給された湯水が浴槽31内へと噴出する噴出口65jと、湯水が噴出口65jに向かって流れる往き流路(63a、65a)と、往き流路(63a、65a)に配設され、圧送された空気を微細気泡として往き流路(63a、65a)を流れる湯水に放出する多孔質体67aと、を備え、往き流路(63a、65a)には、多孔質体67aよりも上流側に、往き流路(63a、65a)の流路断面積を減少させた絞り部63nが設けられていることにより、多孔質体の外表面を流れて、浴槽31内に噴出される湯水の流速を増大させて、微細気泡が放出された湯水を浴槽31内に効率よく拡散させることができる。【選択図】図2
