70年代后期，为了降温隔尘，我矿在露天采矿设备的司机室内安装了CKT-3AB型和BLK－3000D型窗式空调器，近年来，制冷和空调设备已在露天矿山得到了广泛应用。从1994年起，507型冷风机的制冷方式全部采用了蒸汽压缩机，由于制冷机的动力直接来源于三相交流电机，压缩机的结构多 In the late 1970s, in order to cool the dust, the mine installed CKT-3AB and BLK-3000D window air conditioners in the driver’s cab of the open pit mining equipment. In recent years, refrigeration and air-conditioning equipment have been widely used in open-pit mines. Since 1994, all the 507 chiller cooling methods adopt steam compressors. Since the power of the chiller comes directly from the three-phase AC motor, the structure of the compressor is large