Abstract: A method of exchanging gas in a process of making oxygenated water is performed in a water tank. The water tank has a water inlet, a water outlet, a gas inlet, and a gas outlet. Water is received in the water tank. The water outlet and the gas inlet are closed, and the gas outlet is opened. And then supply the water tank with water through the water inlet to make a water level in the water tank go up and make gas above the water level escape through the gas outlet. Next, close the gas outlet and open the gas inlet and the water outlet once the water tank is almost filled up. Finally, close the gas inlet and the water outlet when the water level is lower than a predetermined level.

Abstract: A disturbing device of an oxygenated water machine includes a frame, two wing board, and a separating board. The wing boards are connected to an inner side of the frame, and slope downward. A gap is formed between the wing boards. Each wing board is provided with several ribs on a bottom sides. The separating board is connected to the inner side of the frame and is right under the gap. Therefore, water falls down from the wing board and onto the separating board, and oxygen goes up in a S path from a bottom edge of the frame. It is helpful to the dissolution of oxygen to obtain high oxygenated water.

Abstract: A method of supplying oxygenated water is performed on a water tank, in which oxygenated water is received. The method lets the water tank supply a constant amount of the oxygenated water once, and then supply the water tank with water and pure oxygen to recover the dissolution ratio of oxygen of the oxygenated water in the water tank. The method may supply a constant amount of oxygenated water every time for the user to drink it up once.

Abstract: A method of supplying oxygenated water is performed on a water tank, in which oxygenated water is received. The method lets the water tank supply a constant amount of the oxygenated water once, and then supply the water tank with water and pure oxygen to recover the dissolution ratio of oxygen of the oxygenated water in the water tank. The method may supply a constant amount of oxygenated water every time for the user to drink it up once.