With the social and economic development and the improvement of people's living standards, air conditioning has become an important cooling equipment for people in the hot summer, and the air conditioning unit is usually installed on the indoor ceiling, and the indoor air circulates through it. However, the traditional air conditioning internal unit is prone to produce a large amount of air heat and condensate during operation, which not only raises the indoor air temperature and humidity, but also pollutes the indoor environment.

The cross-flow fan is a new type of air conditioner internal unit which adopts a unique design and can effectively solve the problems of traditional air conditioner internal units. The motor and the air blades of the cross-flow fan are in a cylinder, with 60% space left for the motor load margin to cope with different air duct designs. The impeller of the cross-flow fan is relatively long, and is dynamically balanced on both sides to avoid "unequal spacing, unequal angles, and different centers" in order to achieve the balance standard.

The working principle of the crossflow fan is to rotate the fan impeller through the motor, which draws in indoor air and passes it through the air ducts inside the crossflow fan, and then discharges the air from the other end of the crossflow fan. In this process, the cross-flow fan can effectively separate heat and condensate from the indoor air and expel the heat to the outside through the air ducts, thereby lowering the indoor air temperature and humidity.

In addition, crossflow fans have the following advantages:

1. energy-saving and environmental protection: cross-flow fan adopts advanced energy-saving technology, which can effectively reduce the energy consumption of air-conditioners and minimize the pollution to the environment.

2. low noise: the cross-flow fan adopts advanced noise reduction technology, which can effectively reduce the noise of the air conditioner operation and provide users with a more comfortable environment.

3. Convenient maintenance: the structure of the cross-flow fan is simple and easy to maintain, and users can disassemble and clean the fan impeller by themselves, thus prolonging the service life of the cross-flow fan.

In summary, the application of cross-flow fan in air conditioning has significant advantages, it can effectively reduce indoor temperature and humidity, improve indoor air quality, but also has the advantages of energy saving and environmental protection, low noise, easy maintenance and so on. Therefore, cross-flow fans have a broad development prospect in the future air conditioning market.