| 摘要 |
A mixing apparatus for a bathtub is provided to supply liquid mixed with enough gas to the bathtub and to promote dissolution of gas into mixed liquid by installing an on-off valve on an intermediate supply path. A mixing apparatus(1) for a bathtub(3) for supplying to the bathtub a mixed liquid which has mixed gas and water comprises a chamber, a first mixing tub(10), a second mixing tub(20), an intermediate supply path(34), a supply path(31), a recovery circulating path(32), a water supply(41), a gas supply(42), and on-off valves(51,61,62). The chamber includes a port which is connected to an inlet pipe of the mixed liquid at the top of the chamber. The first mixing tub includes a cylinder disposed within the chamber and having an upper end opening which is connected to an outlet pipe of the mixed liquid and a lower end opening placed in the vicinity of the bottom of the chamber. The second mixing tube is connected to a flow inlet for supplying the mixed liquid to the inside of the tub, and comprises a supply pipe with multiple holes for introduction of the mixed liquid into the mixed liquid accumulated inside the second mixing tub. The intermediate supply path supplies the mixed liquid to the second mixing tub from the first mixing tub. The supply path supplies the mixed liquid to the tub from the second mixing tub. The recovery circulating path recovers the mixed liquid in the tub to the first mixing tub. The water supply supplies water to a circulating path which reaches the tub via the first and second mixing tubs from the recovery circulating path. The gas supply supplies gas to the circulating path which reaches the tub via the first and second mixing tubs from the recovery circulating path. The on-off valves are installed on the intermediate supply path.
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