The present invention provides a vacuum frying device having a fryer, a condenser and a vacuum pump, the condenser is arranged between the vacuum pump and the fryer, and the fryer, the condenser and the vacuum pump are connected to each other. The vacuum pump is configured to extract the internal air of the fryer, and the condenser is configured to convert the water in the air into a liquid, characterized in that there is a high-speed gas supply device, and the high-speed gas supply device is disposed on the side of the fryer and has a gas supply pipe, the other end of the gas supply pipe is connected to the condenser, and the gas supply pipe is connected with one of the exhaust pipes of the fryer； wherein, when the high-speed gas supply device outputs a high-speed steam to the gas supply pipe, the air in the fryer It can be accelerated into the air supply pipe by the exhaust pipe and flow to the condenser. This can effectively improve the vacuuming efficiency and achieve energy saving and environmental protection.本創作提供一種真空油炸設備，具有一油炸機、一冷凝器及一真空泵浦，冷凝器設於真空泵浦及油炸機之間，且油炸機、冷凝器及真空泵浦為相互連通狀態，真空泵浦供以抽取油炸機內部空氣，冷凝器供以將空氣中之水氣轉為液體，其特徵在於更具有一高速氣體供給裝置，高速氣體供給裝置設於油炸機一側且具有一供氣管，供氣管之另一端與冷凝器連接設置，且供氣管與油炸機之一抽氣管連通；其中，當高速氣體供給裝置輸出一高速蒸氣至供氣管時，油炸機內的空氣可由抽氣管被加速帶入供氣管內並流往冷凝器。藉此可有效提升抽真空效能，達到節能環保功效。
