| 摘要 |
<p>The invention is concerned with an apparatus suitable for cooling and/or condensation and/or aeration and/or mixing of water. It comprises a shaft (4), a propeller (6) to suck water from below and feed it upwards, the said propeller (6) being surrounded by a pipe (24) through which water sucked by the propeller (6) can flow upwards, and the inner diameter of the said pipe (24) being 1.2 to 2.0 times larger than the diameter of the propeller (6), a flange (3) to guide water to the sides, and the diameter of the flange (3) being the same as the diameter of the propeller (6), and a motor (1) that rotates the propeller (6).
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