The difference between exhaust fan and exhaust fan

The differences between fans and exhaust fans are as follows: 1. They have different properties. A fan refers to a device that generates wind and cools down the air during hot weather. An electric fan is a device that is driven by electricity to produce airflow. When the fan is powered on, it turns into natural wind to enjoy cool air. Exhaust fans, also known as side-flow fans, centrifugal fans, and small fans, are universal air sources used for blowing or suctioning. Typically used in inhalation machinery. As the name suggests, it is also called an exhaust fan. 2. Their origins are different. Fan originated in 1829. Inspired by clockwork, an American named James Byron invented a mechanical fan that could be fixed to the ceiling and driven by a clockwork. The cool breeze brought by the fan blades makes people feel happy, but climbing the ladder to wind up is very troublesome. In 1933, the University of Hannover in Germany discovered the working principle of the blower and successfully manufactured its product. The application of high-pressure blowers has been promoted. 3. Their characteristics are different. The fan is certified to see if it meets the national first-level energy efficiency standards. The noise is low and the motor is good. In a quiet environment, you can only hear the "whistle" of the wind. No peculiar smell. The peculiar smell is caused by the insulating paint on the copper sheets of the electric fan during operation. Electrical safety: The safety requirements for electric fans are stipulated in national standards, and consumers can also conduct simple tests. In terms of ventilation principles, exhaust fans are divided into four types: high, medium, low and negative pressure. Negative pressure fan series are usually designed by CAD/CAM. They have the characteristics of low noise, low power consumption, large air volume, stable operation, long life, high efficiency, and have an automatic shutter opening and closing system to achieve waterproof and dustproof, and beautiful appearance.