| 摘要 |
An apparatus for supplying oxygen includes an oxygen-rich gas supplying unit for discharging an oxygen-rich gas. The oxygen-rich gas supplying unit is provided with a first passage through which the oxygen-rich gas flows, a side surface of the first passage having an opening formed therein, a second passage through which an atmospheric air flows, one end of the second passage is attached to a periphery of the opening formed in the side surface of the first passage in such a manner that the first passage communicates with the second passage, an oxygen sensor for measuring an oxygen concentration of the oxygen-rich gas and installed in the side surface of the first passage, and a valve assembly for closing and opening the second passage and attached to the second passage.
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