Device for dissolving gas in liquid

A high-concentration oxygenated water generation apparatus configured to dissolve oxygen from an oxygen source in water stored in a water tank, the high-concentration oxygenated water generation apparatus comprising:

• a circulation pump connected to an outlet of the water tank such that fluid flow is possible;
• a dissolution tank connected to the circulation pump and the oxygen source such that fluid flow is possible, the dissolution tank being configured to receive the water stored in the water tank and the oxygen from the oxygen source through the circulation pump and to discharge oxygenated water having increased dissolved oxygen concentration in the water;
• a pressure dissolution unit connected to the dissolution tank such that fluid flow is possible, the pressure dissolution unit having a wound coil part or a plurality of bent parts, the pressure dissolution unit being configured to further increase the dissolved oxygen concentration of the oxygenated water and to discharge high-concentration oxygenated water;
• and
• a dispenser water tank connected to the pressure dissolution unit and the water tank such that fluid flow is possible, the dispenser water tank being configured to receive the high-concentration oxygenated water from the pressure dissolution unit, to store the high-concentration oxygenated water, and to provide the high-concentration oxygenated water to a user, wherein
• the dissolution tank comprises:
• a plurality of dispersion trays, each of the dispersion trays having an inclined surface extending outwards and downwards;
• and
• a plurality of water collection trays, each of the water collection trays having an inclined surface extending inwards and downwards, each of the water collection trays being provided at a lower end thereof with a through-hole,
• the plurality of dispersion trays and the plurality of water collection trays are alternately disposed in an upward-downward direction, whereby contact area and contact time between water and oxygen are maximized, and impact applied to a mixture of water and oxygen due to collision by gravity and degassing due thereto are minimized.