| 摘要 |
PROBLEM TO BE SOLVED: To provide a power head capable of accelerating the generation of micro-bubbles by restraining bubbles from uniting with each other while simplifying the constitution.SOLUTION: A shower head includes: a head body 2 provided with an introduction passage 30 formed in the interior and a gas-liquid mixing part 11 for sucking gas to be mixed as bubbles into hot water; a sprinkling plate 3 having a plate-like part, which is provided with a plurality of sprinkling holes 31 formed so as to penetrate the plate-like part in the board thickness direction and attached to the head body outside an outlet of the introduction passage; and a discharge passage 4 formed between the head body and the sprinkling plate and disposed in parallel to the sprinkling plate. The introduction passage has a passage enlarge part 29 on its outlet side, which is gradually increased in sectional area as it goes toward an outlet. The discharge passage is disposed substantially orthogonal to a part on the outlet side of the introduction passage. An inlet 35 of the discharge passage has a sectional area in which the volume of hot water flowing into the discharge passage per unit hour is not more than the volume of hot water passing through a part outside of the passage enlarged part of the introduction passage per unit hour. |
