Working principle and application of purification and disinfection device of ventilation system

In the ventilation system of modern buildings, air quality directly affects people's health and comfort. For this reason, many buildings are equipped with special purification and disinfection devices to ensure that the air entering the room is fresh and safe. This article will explore the working principle of purification and disinfection device of ventilation system and its importance in practical application.

Ⅰ. Basic concept of ventilation system

The main function of ventilation system is to introduce fresh air and exhaust dirty air in the room, so as to maintain the circulation of indoor air. Ventilation can not only remove carbon dioxide, moisture and odor, but also reduce the concentration of pathogens and harmful substances. In order to effectively improve the air quality, many ventilation systems have added purification and disinfection devices.

Ⅱ. Working principle of purification and disinfection device

Purification and disinfection device usually consists of the following parts:

1. Filter:

The filter is the first line of defense of purification and disinfection device. Common filter materials are HEPA filter and activated carbon filter. HEPA filter can effectively capture tiny particles in the air, such as pollen, dust and bacteria, while activated carbon filter can remove odor and chemical pollutants.

2. Ultraviolet disinfection module:

Ultraviolet (UV) disinfection is a common sterilization technology. The UV-C spectrum emitted by the UV lamp can destroy the DNA of bacteria, viruses and other microorganisms, making them unable to reproduce. In the air passing through the UV disinfection module, the number of bacteria and viruses can usually be reduced to near zero.

3. Negative ion generator:

Negative ion generator can release negative ions, which combine with particles in the air (such as dust, smoke, etc.) to form larger particles, which are easier to be captured by the filtration system. In addition, negative ions also help to improve the freshness of the air and create a comfortable indoor environment.

Control system:

Modern purification and disinfection devices are usually equipped with intelligent control systems that can monitor air quality in real time and automatically adjust the operating status according to environmental changes to achieve the best purification effect.

III. Application scenarios of purification and disinfection devices

The application of ventilation system purification and disinfection devices is very extensive, mainly including the following fields:

1. Medical institutions:

Purification and disinfection devices are indispensable in medical institutions such as hospitals and clinics. They can effectively reduce the concentration of pathogens in the air and reduce the risk of cross infection.

Commercial office:

In crowded offices, good air quality is essential for employees' work efficiency and health. Purification and disinfection devices can provide a fresh and healthy working environment.

2. Living environment:

With people's pursuit of quality of life, more and more families choose to install air purification equipment at home to protect the health of their families.

3. Industrial field:

In some special industrial environments, such as pharmaceuticals and food processing, purification and disinfection devices can ensure the quality of products and the safety of the production environment.

Ventilation system purification and disinfection devices play an important role in improving air quality and protecting human health. Through the comprehensive use of multiple technologies, these devices can effectively remove pollutants and pathogens in the air, creating a safer and more comfortable living and working environment. With the continuous advancement of science and technology, future air purification technology will be more intelligent and efficient, bringing us a healthier life experience.