The invention provides a set base structure of three heating devices, which is mainly composed of a gap on the front and the top of the set base. The two gaps are connected to form a inlay entrance. The edge of the inlay opening is toward the inner end of the set base and corresponds to the support frame of the three heating devices, which is provided with a set groove. The groove of the set groove is facing the top of the support frame of the three heating devices. By the above arrangement, the setting groove of the setting seat can be used for embedding and fixing the support framework of the three heating devices, so as to improve the rigidity of the support framework of the three heating devices.本創作係提供一種三溫暖裝置之定型座結構，主要係該定型座之正面與頂面各具一缺口，該二缺口相通構成一嵌入口，該嵌入口的口緣向該定型座內側端且對應三溫暖裝置的支撐架，係設置有定型槽，該定型槽的槽口係面對該三溫暖裝置的支撐骨架頂端。藉上述設置，該定型座的定型槽可供該三溫暖裝置的支撐骨架嵌入固定，以提升該三溫暖裝置的支撐骨架剛性者。
