AN EFFICIENT, HIGH PRESSURE CHAMBER DISSOLVED OZONE DEVICE

The present invention provides a pressurized ozone dissolving device by which ozone water having a high dissolved concentration can be produced, waste ozone is minimally produced, and water purification is highly effectively performed. The device comprises: an ozone dissolving tank (1) that is confined; an ozone generator (2); and a pump (3) for pressurizing and supplying water to be treated (W). An ozone feeding pipe path (4) is connected with an intake side of the pump (3). A discharge side pipe path (32) of the pump (3) is installed to be extended in the ozone dissolving tank (1). A compressing and dissolving chamber (11) having a distributing hole (12) formed in one space in the ozone dissolving tank (1) to be separated from the surroundings is provided. A spray nozzle (5) at the front end of the discharge side pipe path (32) is opened in order to contact the central part of the distributing hole (12). The water to be treated (W) in which ozone is fed from the ozone feeding pipe path (4) by means of a suctioning force of the pump (3) is sprayed into the compressing and dissolving chamber (11) from the spray nozzle (5) through the distributing hole (12), so that the ozone is dissolved in water in the pressurized compressing and dissolving chamber (11). The produced ozone dissolved water is discharged from the surroundings of the distributing hole (12).