The Research And Design Of Intelligent Current Frenquency Conversion Air-Condition

With attaching more and more importance to the easy life quality and the environment for people, the requirement of the family air-condition increases every year. The DC frequency conversion air-condition has become the developed direction of the family air-condition, for its prominent capability. And the intelligent control technology has been gained every factory's reorganization day by day.Applying to the total digital DC frequency conversion air-condition, Expert System has a series of advantages, such as high efficiency and economical, small starting current, low working noise, and high of the temperature control precision. At the same time, adopting the Expert System can create more comfort room environment. It has more improvements in the ration of energy and efficiency, and can prolong the using life greatly that adopting brushless DC motor as compressor and inner blower fan.This text starts out the general design form hardware aspect of the digital frequency conversion air-condition's system of indoors and outdoors. For more concision in structure, high efficiency and high reliability of the outdoors control system, the outdoors controller choosing intelligent power module and microprocessor forms the entire system. The indoors structure is more simple than the outdoors, and it main controls the indoors DC brushless blower, the communication of the indoors and outdoors and the lead wind board, etc.According to consumer's requirement and referring to the air-condition style existing, the digital frequency conversion air-condition designs many working modes, like refrigeration, making-hot, distributing air, dehumidification, and it also appends a series of protecting control of improving security. This protecting control can guarantee the air-condition working stability. The Expert System strategy takes key part in air-condition capability, and it should consider the indoors and outdoors' going. According to the two factors, that the size of inner difference in temperature and the speed of temperature changing ratio when air-condition working, the text uses Expert System strategy with advancement to control the compressor's working voltage and the refrigeration's flux.