인버터 아크 용접기의 열유동 해석

Abstract

To effectively dissipate the heat generated by an inverter-type arc welding machine, we propose the design of a heat dissipation mechanism that can efficiently dissipate the heat inside the arc welding machine through a heat sink. To this end, the effect of heat dissipation on the shape change of the heat sink was confirmed through thermal fluid analyses. In addition, the heat dissipation effect, according to the distance between the coils, was identified and reflected in the internal design of the arc-welding machine. Results of the thermal flow analyses confirmed that the all-in-one type heat sink achieved a superior heat dissipation effect, as compared with the wing-type heat sink. Furthermore, as the distance between the coils increased, the effect of the center and lower cooling fan on the concentrated heat dissipation effect decreased; therefore, a distance of 40 mm between the coils is deemed suitable.