The invention relates to the detergent equipment field, in particular to air cooler refrigeration equipment for detergent producing. The air cooler refrigeration equipment comprises a condenser. A liquid storage tank is connected to the condenser. A dry filter is connected to the liquid storage tank. An electromagnetic valve is connected to the dry filter through an air pipe. An expansion valve is connected to the electromagnetic valve. An evaporator is connected to the expansion valve. A compressor is connected to the evaporator and connected with the condenser. The simplest single-stage steam compression type refrigeration cycle is adopted. A single-stage compression type refrigeration cycle system is mainly composed of the compressor, the condenser, the expansion valve and the evaporator; the whole cyclic process is mainly composed of a compression process, a condensation process, a throttling process and an evaporation process, and each process is completed in different parts; the state of refrigerant in each process is different, and a major parameter of the cycle system can be subjected to design calculation.