The CF series kitchen smoke exhaust duct fan is developed by our factory on the basis of digesting and absorbing advanced foreign technology, through CAD optimization design, and repeated experiments. This series of fans has a pipeline type appearance, and the motor is installed outside the fan, completely isolating the oil fume in the high-temperature pipeline from the motor, thereby ensuring the safe operation of the motor for a long time, and greatly improving its service life compared to other types of fans. It has the characteristics of low noise, excellent high-temperature resistance, high efficiency, and convenient installation and cleaning. Continuous operation for more than 60 minutes at a temperature of 200 ℃ for the conveying medium, and long-term continuous operation without damage at a temperature of 80 ℃ for the conveying medium. Mainly used for ventilation and exhaust of high-temperature media such as high-end civil buildings, kitchens, and ovens. On the one hand, it has changed the situation where there was no dedicated kitchen fan in China in the past; On the other hand, it ensures that the kitchen has low noise and no pollution. The CF series kitchen smoke exhaust duct fans are all horizontally oriented, and the inlet and outlet are square, making it very convenient to connect with the duct. This fan can be used in conjunction with an efficient kitchen oil fume purifier or as a standalone duct fan.