Water purifier that uses waste heat from thermoelectric element

A water purifier using waste heat of a thermoelectric element, the water purifier comprising:

• a thermoelectric element wherein a cooling surface is formed on one side of the thermoelectric element and a heat dissipation surface is formed on the other side of the thermoelectric element;
• a cold water module wherein filtered purified water flows through the cold water module and the cold water module is in contact with the cooling surface of the thermoelectric element to cool the purified water;
• a heat dissipation module in contact with the heat dissipation surface of the thermoelectric element to release heat dissipated from the thermoelectric element to the atmosphere and to cool the heat dissipation surface;
• a preheating module wherein filtered purified water is temporarily stored in the preheating module and the preheating module is in contact with the heat dissipation module, which is heated by waste heat released from the heat dissipation surface of the thermoelectric element, to heat the stored purified water;
• an instantaneous hot water module configured to receive the purified water heated by the preheating module and to heat the purified water preheated by the
• a circulation pump configured to transfer the purified water from the preheating module to the instantaneous hot water module or to circulate the purified water from the instantaneous hot water module back to the preheating module;
• and
• a controller configured to control the circulation pump, the instantaneous hot water module, the thermoelectric element, and the heat dissipation module according to an operation of the cold water module and a temperature of the purified water in the preheating module, and to control, as necessary, an amount of heat transferred from the heat dissipation module to the preheating module.