Air port assembly for passive house fresh air system

The utility model discloses an air port assembly for a fresh air system of a passive house, which comprises a fixed shell, a ventilation pipe is arranged in the fixed shell, the ventilation pipe penetrates through the wall of the passive house and the side wall of the fixed shell and extends into the passive house, and an air outlet pipe is further arranged in the ventilation pipe. The air outlet pipe penetrates through the wall of the passive house and extends into the fixed shell, a connecting port is formed in the bottom wall of the fixed shell, a motor is fixedly connected to the side wall of the other side of the fixed shell, and a protective shell is fixedly arranged on the inner side wall of the motor; and the output end of the protective shell is fixedly connected with a fixed shaft. According to the passive house, when indoor air is exhausted, the indoor air and external air entering a room are used for heating, so that heat lost due to air exchange is greatly reduced, and the energy consumption of t