Refrigerator and control method of the same

A refrigerator comprising:

• a purified water pump which increases a pressure of water;
• a carbon dioxide regulator which decreases a pressure of carbon dioxide;
• a mixing pipe which mixes water introduced from the purified water pump, and carbon dioxide introduced from the carbon dioxide regulator, and produces carbonated water;
• and
• a controller which determines a target pressure of the water and the carbon dioxide, and controls the purified water pump and the carbon dioxide regulator such that the pressure of the water and the pressure of the carbon dioxide reaches the target pressure.

A method of controlling a refrigerator, comprising:

• receiving a production condition of carbonated water from a user;
• increasing a pressure of water to a target pressure corresponding to the input production condition using a purified water pump;
• decreasing a pressure of carbon dioxide to the target pressure using a carbon dioxide regulator;
• and
• simultaneously mixing the water having the target pressure and the carbon dioxide having the target pressure using a mixing pipe, and producing carbonated water.