Current status and development trend of ventilating fan motor technology
To improve indoor air, the best way is to ventilate. Ventilation fans are the simplest and most effective ventilation appliances. In the 1970s, my country began mass production of ventilators. After more than 40 years of development, the varieties and specifications of ventilators have been continuously improved, technical quality has been continuously improved, and the scope of application has been continuously expanded.
Ventilation fans for household and similar purposes are widely used in homes and public places, and almost all buildings must be ventilated. Due to the low power of a single ventilating fan (most ventilating fans are below 100W), its energy consumption has not attracted the attention of domestic manufacturers and users. Nowadays, the demand for ventilating fans continues to increase, the number of ventilators is increasing, the working hours are getting longer and more and more electric energy is consumed, and people are beginning to pay attention to their energy consumption. Now many countries have or are developing ventilating fan energy efficiency standards. the study.
The motor is the power part of the ventilating fan, and also the most costly component of the ventilating fan. The life and efficiency of the ventilating fan are mainly determined by the motor. Ventilator motors mainly include shaded pole motors, capacitor-operated motors and DC motors. Shaded pole motors are simple in structure, low in cost, and easy to install. For cost considerations, shaded pole motors are generally used for small air volume ventilating fans, such as window sashes. Capacitor-operated motors are also less efficient, but higher than shaded pole motors. Because of their simple structure, mature technology and stable performance, they are widely used in ventilation fans.
The development direction of the ventilating fan is high efficiency, energy saving, low noise, multi-function and easy installation. The certification of product performance is very important, and the nominal air volume, wind pressure and noise of the ventilating fan are also required to be certified in China. If energy efficiency standards can limit the noise of products, it will be more complete and more comprehensive.
The integrated ceiling ventilation module has been widely used in kitchens and bathrooms in the field of home improvement due to the design style of ceiling ceiling modules, simple structure and easy installation, and has a trend toward tooling. The fresh air system is an extension of the ventilating fan product. The new heat exchange fan capable of two-way ventilation, energy exchange, sterilization and filtration and multi-functional intelligent control will be increasingly used in the ventilation system of industrial and civil buildings.