The utility model relates to a heat insulation device of a stir frying machine, which is arranged outside the opening of the stir frying machine. The heat insulation device includes an air outlet device and a control device, wherein the air outlet device is adjacent to the opening of the stir frying machine, and the control device is used to control the air outlet device to generate at least one continuous air flow outside the opening of the stir frying machine, so as to block the internal and external air convection of the stir frying machine, so as to maintain the air flow Working temperature in the frying machine.一種炒菁機之隔熱裝置，其設於炒菁機之開口外；此隔熱裝置包括有一出氣裝置及一控制裝置，其中出氣裝置鄰接於炒菁機之開口，而控制裝置用以控制出氣裝置產生至少一道持續流動於炒菁機開口外側之氣流，藉以阻斷炒菁機之內部與外界的空氣對流，俾供維持炒菁機內的工作溫度。
