The utility model relates to a direct drive structure of an aerator motor, comprising: a brushless DC motor, a frequency converter, a base and an upper cover； wherein the frequency converter is arranged on a brushless DC motor, and the brushless DC motor is fixed on the base The upper cover is fixed on the base by covering the frequency converter and the brushless DC motor, and the two sides of the upper cover have openings for extending the axis of the brushless DC motor horizontally for connecting the drive shaft of the blade aerator. The blade is then driven to rotate. Thereby forming a direct drive and energy saving effect of the aerator motor.一種增氧機馬達直接驅動結構，包括：一個無刷直流馬達，一個變頻器、一個底座，一個上蓋；其中，該變頻器裝置於無刷直流馬達上，該無刷直流馬達係固定於底座上，該上蓋覆蓋於變頻器與無刷直流馬達而固定於底座上，上蓋之兩側有開孔而讓無刷直流馬達之軸心水平伸出，用以銜接葉片式增氧機之傳動軸，再驅動葉片轉動。藉此組成一具直接驅動與節能效果的增氧機馬達。
