3D PRINTER USING THERMOELECTRIC ELEMENT

摘要

The present invention relates to a 3D printer using a thermoelectric element. More specifically, the 3D printer comprises: a case having an operation space inside; an extrusion portion installed inside the case, extruding a material which forms an operation target, and spraying the same; a transfer portion for moving the extrusion portion in X, Y, and Z axial directions in the operation space; a transfer control portion which controls the operation of the transfer portion; a first thermoelectric element having a first emitting portion which emits heat and a first heat absorption portion which absorbs the heat, installed in the case to make the first heat emitting portion and the first heat absorption portion respectively face the outside and the inside of the case, and cooling the operation space; an element control portion which supplies a current to the first thermoelectric element, and controls the current amount which is supplied to the thermoelectric element; and a waste heat recovery portion which recovers the heat generated in the first thermoelectric element, and heating the material and the extrusion portion using the recovered heat. According to the present invention, the 3D printer can cool the operation space and maintain the same at a constant temperature by the heat absorption portion of the thermoelectric element, as well as easily extruding the material by heating the material, which forms the operation target, and the extrusion portion, which extrudes the material, by recovering waste heat which is thrown outside.