Why does home air conditioner not have external circulation? The reason why home air conditioner does not have external circulation is because most home air conditioners are split air conditioners. Th

Why does home air conditioner not have external circulation? The reason why home air conditioner does not have external circulation is because most home air conditioners are split air conditioners. The indoor unit and the outdoor unit are connected by steel pipes. Generally, there are two steel pipes. , one is larger and the other is smaller. The larger one carries gas and the smaller one carries liquid. Their effects are relatively large. The internal circulation of household air conditioners means that the wind comes from indoors. This is the internal circulation of the air conditioner. The air duct of the external circulation leads to the outside, so air can be drawn in from the outside. There is a big difference between the two. The use of internal circulation can prevent dirty air from outside from entering the room. This is also the reason why household air conditioners adopt internal circulation design. At the same time, the car uses internal and external circulation, which can greatly reduce fuel consumption. When using a household air conditioner, because it works under internal circulation, the air in the room will not be very fresh. Therefore, you should always pay attention to ventilation indoors, so that the internal circulation of the air conditioner can provide people with fresh air and will not make people feel Relatively boring.