Ventilation filter screen group

The utility model relates to the field of ventilation equipment, in particular to a ventilation filter screen set which comprises a pipe body, a fan used for blowing air is arranged in the end portion of the pipe body, air outlet holes are formed in the other end of the pipe body, the air outlet holes are further formed in the circumferential side wall of the pipe body, and the air outlet holes are communicated with the pipe body. The pipe body is provided with an anti-backflow assembly used for controlling opening and closing of the air outlet holes, and when external wind is strong, the air outlet holes corresponding to the external wind direction of the anti-backflow assembly are closed. The air conditioner has the effect that the probability that external air affects the ventilation effect of the ventilation filter screen set is reduced. 本申请涉及通风设备的领域，尤其是涉及一种通风过滤网组，其包括有管体，所述管体的端部内设置有用于吹风的风扇，所述管体的另一端上开设有出气孔，所述出气孔还开设在管体的周向侧壁上，所述管体上设置有用于对出气孔进行开闭控制的防逆流组件，当外界的风大时，所述防逆流组件外界风向所对应的出气孔封闭。本申请具有降低外界的风对通风过滤网组的通风效果造成影响