There is provided a method for detecting anti-freezing of ice cream manufacturing machine, which includes using a cooling cylinder and a cooling system to cool and crystallize ice cream, and using a motor to drive a stirring unit for stirring the ice cream and setting the motor at a fixed rotation speed to stir and cool the ice cream. When the ice cream starts to be crystallized and becomes hard, the motor will increase the load current flowing through the motor so as to maintain the rotation speed. At this moment, a detection unit of the motor will detect the magnitude of the current flowing through the motor. When detecting that the current flowing through the motor exceeds a critical value, the detection unit will send out a warning and automatically activate an anti-freezing means of a cooling device to lower the freezing effect of the cooling system, thereby preventing the cooling cylinder from encountering a frozen cylinder condition and the ice cream from becoming too hard due to excessive freeze.一種冰淇淋製造機防凍的檢測方法,包含使用降溫缸及降溫系統對冰淇淋進行降溫結晶的動作,同時以馬達帶動攪拌單元對冰淇淋進行攪拌,將馬達設定在一固定轉速下,對冰淇淋進行攪拌及降溫的動作。當冰淇淋開始結晶、逐漸變硬時,馬達會為了維持轉速,提高流經的負載電流,此時,馬達上的一檢測單元將會對流經馬達的電流大小進行檢測,當檢測單元檢測到流經的電流大小超出臨界值時,便發出警示並自動啟動降溫裝置的防凍手段,降低降溫系統的冷凍效果,避免降溫缸產生凍缸及冰淇淋結凍過硬的情形發生。10‧‧‧降溫缸20‧‧‧攪拌裝置21‧‧‧軸心22‧‧‧混拌刮刀30‧‧‧皮帶40‧‧‧馬達41‧‧‧驅動軸42‧‧‧檢測單元50‧‧‧變壓器60‧‧‧降溫系統61‧‧‧降溫模組611‧‧‧進料管線612‧‧‧退料管線613‧‧‧冷熱交換管62‧‧‧壓縮模組621‧‧‧壓縮機622‧‧‧出氣管線63‧‧‧冷凝模組631‧‧‧冷凝管632‧‧‧外管633‧‧‧內管64‧‧‧連通管641‧‧‧控制閥
