This article mainly introduces a barrel created so that a pot may be put inside, an innovative structure which produces an energy-saving effect. This creation uses the combination of the insulation structure of the
barrel and a thermal energy-saving design to produce the function of condensing heat and insulation. The main body is a cylindrical and shaped like a barrel, with the insides covered with insulation material. This gives it excellent heat accumulation and promotes heat radiation effectiveness. When cooking, first place the barrel over the stove as it creates rapid heating which reduces the time needed for cooking the food. Between the barrel and the pot, there is a reserved space which is
the part of the energy-saving insulation structure. The cover on the top of the heating space allows for adjustments through different sized holes in the structure. This dominates the heat radiation effectiveness and insulation functions to achieve practical results.