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What is the function of the air return vent of the air conditioner
2021-11-12 11:01
1. What is the function of the air conditioner return vent?
The air conditioner return vent is used for return air. When the indoor load is certain, the amount of cold air that needs to be delivered to the room is certain. Compared with the fresh air, the indoor air temperature is generally lower in summer, so some air is returned to the air conditioner box through the return duct, and mixed with a small amount of fresh air to make cold air and send it into the room. Compared with using all fresh air for cooling air, it can effectively save energy. Generally, fresh air units are used in conjunction with fan coils. Fan coils cool the indoor air and send it into the room, which is similar to the function of the return duct of the central air conditioner. Due to hygiene requirements, fresh air units are required to send fresh air into the room.
2. The difference between air conditioner outlet and return vent
1. Diffuser shape
The air conditioner outlet is usually square and multi-layered and removable, connected with fireproof canvas, without filter, but the surface is very clean. The return air vent of the air conditioner is rectangular, also known as a single-layer louver vent, and contains a filter. If it is not washed frequently, black dust will accumulate in the corners on the surface of the vent, which is very easy to distinguish. Its main function is to suck back the turbid air.
2. Indoor unit capacity
Since the air vent of the air conditioner can usually only be seen indoors, the size of the air vent is particularly important. If the design is unreasonable, it will not only cause visual pollution in the future, but also cause a lot of trouble to the user. The air vent of the air conditioner needs to be cleverly adapted in the design and installation according to the home decoration. The specifications of the return air vent are determined by the capacity of the indoor unit.
3. Different vent area
If the air vent of the air conditioner is too large and the air duct is too long, the air flow speed will decrease, thus affecting the use of the air conditioner. Of course, if the air vent of the air conditioner is too small, the air flow speed will be large, causing the wind to blow directly on the human body and cause discomfort. In addition, it is also very likely to cause phenomena such as excessive noise. Generally speaking, the wind speed at the return air outlet is much faster than that at the outlet, so when the air volume is constant, the area of the return air outlet must be larger than the area of the outlet.
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