| 摘要 |
A mixing device for a bathtub is provided to mix a sufficient amount of gas into a liquid that is supplied to a tub, and to make the gas dissolved in the liquid in a mixing space of a supply pipe. A fluid mixing device includes a liquid storing space, a supply pipe(220), a liquid level setting up device and a circulation path. The liquid storing space stores liquid and gas and is able to be pressurized. The supply pipe is installed inside the liquid storing space, and has plural holes to discharge the liquid from the inside of the supply pipe to the inside of the liquid storing space. The circulation path is installed together with a circulation pump(31) to circulate the liquid in the liquid storing space. One end of the circulation path is connected to the supply pipe, and the other end of the circulation path is connected to the inside of the liquid storing space.
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