The fresh air transmission method adopts the displacement type instead of the wall-mounted split air conditioner. The internal circulation principle of the gas and the unhealthy method of mixing the old and new gases. The novel outdoor air is automatically sucked into the room through the negative pressure method, and is installed in the bedroom, hall or When the fresh air opening on the window of the room enters the room, it will automatically remove dust and filter. At the same time, the corresponding indoor pipeline is connected to the exhaust vents in several functional rooms. The circulatory system will take away the indoor exhaust gas and concentrate it on the exhaust vent to "exhale", and the exhaust gas will no longer be recycled. Good circulation of old and new winds.
