I heard that Pharaoh next door bought an air purifier. When he saw someone, he said that the air in his home was still fresher than the park. He ran to his house in the morning to feel a little, and he was really good. He thought he had gotten one too. This online shopping was really true. Conveniently, I arrived in the morning the next morning, thinking that sleep will become more comfortable this time.
It's strange that things didn't work out as expected. The air index is getting better, but the air purifier's air outlet buzzes and it makes people completely unable to sleep. It's important to feel sleepy, so stop the purifier first. Now.
The next morning they ran Lao Wang's home again and again. This time, the air purifier was really a bit stressful, especially if it was used at home. However, this noise problem should be focused on. Especially when sleeping, the environment is relatively quiet. , The effect of bad noise control is more obvious.
Pick a Noiseless Air Purifier: Look at the Quality of the Fan
At present, there are two types of fans used in the air purifiers on the market: axial fans and centrifugal fans. Axial fans are fans that have the same axial direction of air and fan blades. For example, we usually see electric fans. The air volume and the wind pressure are relatively small, and the noise generated at the same time is relatively large. The centrifugal fan can not only overcome the huge resistance caused by high-efficiency particulate filter + activated carbon, but also can output not only clean air but also low noise.
Choosing an Air Purifier with Low Noise: Whether the Design of the Duct is Reasonable
At present, the design of air ducts for air purifiers in the market is mainly divided into box structure, tower structure, column structure, and double air intake structure. Next, let us recognize these four types of air duct design.
Box-type structure: Most of them adopt the “back-in and front-out type” air intake method, which not only has a small ventilation volume, uneven wind, but also easily lifts up dust. Even if its CADR exceeds 300-500m3/h, noise will be caused. Home life quality.
Tower structure: Most of them use a thick single filter element, so the fuselage can be filled with activated carbon of about 2KG. However, the power consumption is high, and it is not environmentally friendly.
Column structure: The bottom of the product is generally cylindrical, which not only increases the area of the filter, but also prolongs the service life of the filter. However, due to the narrow air passage, the air intake of the airframe is likely to produce unacceptable noise.
Double inlet structure: Mostly adopting the structure of 'double air inlet, upper air', not only can speed up the air circulation, reduce the clean corners, but also create a CADR value of -700m3/h. In addition, it can clean the air. At the same time, it can give you a stable and comfortable sleep environment.
Pick a Noiseless Air Purifier: Note the Volume of Sleep Mode
The odds of physical and mental illness caused by noise are still quite large, and the treatment is difficult. It causes great trouble for people's daily life and work. Therefore, when we choose the purifier, we need to pay attention to whether the sleep mode of db exceeds the standard rest time. The decibels. In general, the purifier sleep mode running volume below 30 dB can allow users to have a good sleep experience.