How to distinguish the air outlet and air return outlet of central air conditioning? What is an air conditioning outlet?

In hot summer, air conditioning brings us a lot of comfort. Air-conditioning installers know that air-conditioning outlets generally have two air outlets and air return outlets. Many people don't know why they want to design or the difference between them. In fact, we should know more about the air outlet and return air outlet of central air conditioning, which will help us encounter problems in our lives. So, how to distinguish the air outlet and return air outlet of central air conditioning? What is an air conditioning outlet? There are two kinds of air conditioning vents: air outlet and air return outlet. As the name implies, the air conditioning outlet blows cold air, and the air conditioning return outlet sucks indoor air. The small hole next to the air outlet of the air conditioner is a new air outlet, which is relatively small. There is no doubt that every room is installed on the wall or in a straight line with the air outlet of the air conditioner. The fresh air outlet is generally grille type and installed on the external wall. Its main function is to exhaust the dirty air indoors. Axial flow fans are usually used. Because the machine mouth is round, for the convenience of construction, it is generally connected with iron pipes. Most indoor installation locations are in the corner not far from the computer room. The way to distinguish the air outlet from the air return outlet is 1, diffuser shape. The air outlet of the air conditioner is generally a square diffuser, which is multi-layered and detachable. It is generally connected with fire-proof canvas. Without a filter, the surface will be clean. There may be water droplets hanging on it when sending air conditioning! Air-conditioning air return vents are mostly rectangular, also known as single (double) layer louver vents with filters. If it is not cleaned frequently, there will be black dust on the surface of the vent, which is easy to distinguish. The main function of the air return port is to suck dirty air back. 2. The capacity of the indoor unit Because only the air-conditioning vents can be seen indoors, the size of the air-conditioning vents is very important. If the design is unreasonable, it will cause visual pollution and bring a lot of trouble to use. In the actual design and installation process, the air outlet of the air conditioner needs to be modified flexibly according to the family decoration, and the size of the air outlet/air return outlet depends on the capacity of the indoor unit. 3. Different tuyere areas If the tuyere size of the air conditioner is too large and the air duct is too long, the airflow speed will decrease, thus affecting the use effect of the air conditioner; If the size of the air outlet of air conditioner is too small, the airflow speed will increase, which will cause discomfort when the wind blows directly on human body, and may also lead to excessive noise. There are three return air modes of air conditioning: side return air, lower return air and side return air. Because the wind speed of air-conditioning air return is generally greater than that of air outlet, the area of air return is greater than that of air outlet under the condition of constant air volume. After Bian Xiao's introduction, everyone should have a deeper understanding of the air outlet and air return outlet of central air conditioning, and also know the difference between them. Friends who have air conditioning at home should learn to maintain the air conditioner regularly, which can extend the service life of the air conditioner to a certain extent. Through the above detailed introduction, I believe everyone is familiar with the air outlet and air return outlet of central air conditioning, and I hope my introduction can help readers.