压缩机培训教材(国外英文资料).docVIP

压缩机培训教材(国外英文资料) I repaired a star freezer, press QD75, its 162W. 1.2A Qianjiang press. Another QD57125W. QD62145W. QD85184W Catalog I. classification of compressors Two 、 the working principle of compressor Three, compressor unit installation and maintenance of attention Four typical compressor failure analysis Five 、 fault diagnosis Six, actual case In the device, the refrigeration compressor is the main equipment to realize the refrigeration cycle. It can finish the continuous transportation of refrigerant gas from low pressure to high pressure. According to the use of refrigeration equipment, compressors can be divided into refrigeration compressors, air conditioning compressors, vehicle air-conditioning compressors. According to the different speed of the compressor, it can be divided into constant speed compressor and variable frequency control compressor. According to the use of different work, can be divided into ammonia compressor, freon compressor, etc.. According to the structure, it can be divided into open type, semi closed type and totally enclosed compressor. According to the working principle of compressor, can be divided into two types of volume and speed type. Volume type compressor is working through the variable volume to complete the gas compression and transmission, it can be divided into two kinds of rotary piston and piston, (also called reciprocating compressor) is the piston reciprocates in the cylinder, called reciprocating piston type rotary compressor; rotor is rotating in the cylinder. Mainly rolling rotor compressor, scroll compressor and so on. The speed compressor is the gas in the high-speed rotating impeller, to improve the speed, and then through the guide to the kinetic energy of the gas into pressure energy, so as to complete the gas compression and transportation process. Centrifugal compressor is commonly used at present. Second, compressor structure and working principle Unit: Dalian SANYO, Daikin, Hitachi, Guangdong Meizhi, M