A fan is a mechanical device used to transport fluids. Its function is to transfer the mechanical energy of the prime mover or other energy sources to the fluid to achieve fluid transportation. As a widely used general machinery with a large quantity, fans are widely used in various industries, such as: supply fans, induced draft fans, vacuum fans, powder exhaust fans, primary fans, desulfurization booster fans, sorter fans, cooler vacuum fans, kiln air supply fans, and main vacuum fans in the field of dynamic power generation; Dust removal fans, blast furnace blowers, main exhaust fans, and induced draft fans in the metallurgical field; Main exhaust fans and mine ventilation fans in the mining field; Dust removal fans, ventilation fans, main exhaust fans, etc. in other industrial fields such as papermaking. In the mechanical and electrical equipment of various industries in China, motors that are matched with fans account for about 40% of the country's installed motor capacity, and consume about one-third of the country's total electricity generation.

According to survey data from the national industrial department, the vast majority of fans in China currently experience the phenomenon of "big horses pulling small cars" and not operating at the optimal operating point during production and operation. In addition, due to changes in production regulation, process requirements, and other aspects, it is necessary to frequently adjust parameters such as flow rate, pressure, and temperature of the throttle body to meet production needs. Currently, the vast majority of fans rely on air damper baffles to adjust flow rate. During the adjustment process, the resistance characteristics of the pipeline change, which is actually achieved by artificially increasing resistance and wasting electricity to meet the demand for gas flow regulation in industry and working conditions, resulting in huge energy waste.

Based on fuzzy control theory and variable frequency speed regulation technology, Tianli Electric automatically detects and calculates the size of the system load, and adjusts the operation curve of the variable frequency device, high-efficiency motor, and load in real time according to the load changes, so that the fan always operates in the high school area. At the same time, through optimized control of the original system, automatic adjustment of air flow rate, pressure, and temperature is achieved, and the aerodynamic noise and mechanical noise of the fan regulated by the baffle are effectively reduced, thereby achieving the best energy-saving effect. The comprehensive energy-saving rate can reach 15% -35%, and the energy-saving effect is significant.