Air inlet structure of duct type air conditioner and duct type air conditioner

The utility model relates to the technical field of air conditioners, and provides an air inlet structure of a duct type air conditioner and the duct type air conditioner, and the air inlet structure of the duct type air conditioner comprises an air inlet shell and a valve plate assembly; a first air inlet is formed in the outer side face of the air inlet shell, and a first fresh air opening is formed in the first end face of the air inlet shell. The valve plate assembly is rotatably arranged in the air inlet shell and suitable for being switched among a first position, a second position and a third position, and in the first position, the valve plate assembly opens the first air inlet and closes the first fresh air opening; in the second position, the valve plate assembly opens the first air inlet and the first fresh air opening at the same time; in the third position, the valve plate assembly closes the first air inlet and opens the first fresh air opening. The air inlet quantity can be adjusted, multiple a