Abstract: A water-cooled heat dissipation module assembly capable of cooling a power module of a vehicle driving inverter system using a battery or fuel cell. The water-cooled heat dissipation module assembly includes a housing unit provided in the form of a housing having an opening portion at least partially opened at one side thereof. The housing unit and at least a part of a rim region of the cooling unit are made of a plastic material, and the housing unit and the cooling unit are joined to each other by plastic welding using a laser.

Abstract: A meat roaster capable of preventing meat from burning and sticking to a grill is provided. The meat roaster includes a body having an accommodating portion for accommodating a heat source. A grill connected to the body includes a frame and a fluid circulating pipe. The pipe is mounted at one side of the frame in such manner that the pipe is repeatedly bent at regular intervals. The pipe has an inlet socket formed at one end of the pipe and an outlet socket at the other end of the pipe. A temperature controller controls a fluid circulating through the pipe of the grill at a predetermined temperature which prevents the grill from overheating.

Abstract: Disclosed is a washing machine capable of enhancing washing effectiveness by generating a perpendicular-shaped waterflow. The washing machine has a washing tub for providing space to wash washing articles and a pulsator having a plurality of protrusions formed in a concentric periphery with the washing tub, and for forming a perpendicular-shaped waterflow in washing water by the rotation of the plurality of protrusions. The tangling of the washing articles in the center portion of washing tub is prevented, so that the washing effectiveness is enhanced. The washing effectiveness can be further enhanced because the washing articles strike the plurality of protrusions.