A cooking appliance may include: an upper plate on which a cooking vessel is placeable; a lower plate below the upper plate, and including: electrical components, and a heat sink configured to dissipate heat generated by the electrical components; a sheet coil on the lower plate and forming a gap with the upper plate; a scroll including: an inlet, an outlet, a lower scroll forming a lower flow path from the inlet and along the heat sink, and an upper scroll forming an upper flow path from the inlet and through the gap; and a fan within the scroll with blades having an expansion angle greater in the upper flow path than in the lower flow path, to flow air of which a portion flows along the lower flow path to cool the heat sink, and a portion flows along the upper flow path to cool the sheet coil.