Li Shifu of Gree Air-conditioning talked about the downward ventilation function;
(1) supplement indoor oxygen. Due to the continuous consumption of oxygen by human body, the indoor oxygen content is reduced, and the oxygen content in indoor air is increased by supplementing outdoor air with high oxygen content.
(2) Exhaust indoor dirty air. Long-term use of air conditioners can easily produce various indoor odors, such as sweat, body odor and smoke. Through ventilation, the air conditioner can constantly update the indoor air and expel the indoor odor in time, thus improving the air quality and being beneficial to human health.
(3) Moisturize. Because when the air conditioner is cooling, the evaporator is constantly condensing water and discharging it outside, resulting in the loss of water in the indoor air. Ventilation and air conditioning can achieve moisture retention by supplementing outdoor air with high moisture content.