Brief introduction of the difference between fresh air system and air purifier

The air purifier only recycles indoor air and does not introduce fresh air from the outside, which is more uncomfortable than the new air system. In order to ensure the indoor air quality, the fresh air unit is equipped with indoor space centralized fresh air system, and the main unit supply air and process fresh air are called fresh air unit. The fresh air unit generally does not bear the heat and humidity load of the air conditioning area, and its main function is to supply air. Of course, the ideal supply air temperature and humidity is constant, so the fresh air unit generally controls the supply air temperature and humidity. The air purifier is suitable for the living room which needs to purify the air in a short time. It has many purchase channels, no need for professional construction and installation, plug and play and other advantages.

Fresh air, "fresh air system", as the name implies, refers to the building mechanical and electrical systems that provide fresh air for the living room. The fresh air unit of the heater mainly deals with the outdoor air, and the air conditioner mainly deals with the air treated by the fresh air fan. However, the fresh air fan can have return air or fresh air, which is to better adjust the parameters such as temperature and humidity. It is composed of central fresh air fan (or unit, including air filtration and purification, heating or cooling, humidification or dehumidification and other air treatment functions), ventilation duct and tuyere (inlet and return air). The wind is composed of three parts, which can exhaust the indoor dirty air to the outside and filter the outdoor fresh air to the inside.

Air purifier, also known as "air purifier", refers to electronic products that can filter, absorb or decompose various air pollutants and improve air cleanliness. Its working principle is to circulate the indoor air through the fan, and then purify the air with a filter that filters out pollutants.

Introduce fresh air into indoor air, add fresh air to indoor air, supplement oxygen, improve the comfort of living space and reduce the content of infectious substances in the air. Its advantage is that it will not mix fresh air and dirty air, and the noise is relatively small when used. The functional space of fresh air system usually includes bedroom, living room, etc., but each space needs to be installed with separate equipment.

The air purifier only recycles indoor air and does not introduce fresh air from the outside, which is more uncomfortable than the new air system. In addition, some air purifiers are very noisy, it is easy to affect people's sleep.