What is the principle of air supply function of air conditioner?

The air supply function of the air conditioner is actually that the fan of the indoor unit is supplying air. Compared with ordinary fans, its main function is to increase the mobility of indoor air. When the air conditioner is in the air supply function, the outdoor unit does not work and will not exchange heat and cold, so the wind blown by the indoor unit is natural wind. This function is rarely used in daily use.

The indoor unit of air conditioner provides air because there is a fan in the indoor unit. Its blades are blowing out (air outlet), and the indoor unit is in a negative pressure state, so indoor air enters the indoor unit from the air inlet. Evaporator? The evaporator absorbs the heat energy in the air to reduce the temperature of the air, and then it is blown out by the indoor fan, so that the indoor temperature is gradually reduced.

Air conditioning air supply shortcomings

Generally speaking, the fresh air system is indoor and outdoor ventilation, and the air conditioner is indoor refrigeration and heating. There is no conflict between the two. Some air conditioners also have "fresh air", but this is "false fresh air", because it uses positive pressure to supply air, and the indoor pressure reaches a certain level, which is higher than the outdoor pressure and the static pressure of the fan, so the wind can no longer enter the room.

The air received by the wall-mounted air conditioner comes from the air conditioner itself, and a closed circulation system is formed between the room and the air conditioner. Some central air conditioners with fresh air are difficult to continue to supply air because the fresh air forms positive pressure in the indoor area; Bacteria multiply in the air outlet, especially in winter, and the temperature of the air conditioning port is a hotbed of bacteria; The purpose of full exchange of indoor and outdoor air cannot be achieved, and the price is higher than that of ordinary air conditioners.