Wall-mounted multifunctional fresh air ventilator

The utility model belongs to the technical field of air purification equipment. The utility model relates to a ventilator, in particular to a wall-mounted multifunctional fresh air ventilator. An existing fresh air ventilator pumps outdoor air into a room. The filter screen for filtering impurities is not provided with a cleaning device; impurities such as pollen dust are contained in the air; inorder to overcome the defects of easiness in blockage of a filter screen and inconvenience in cleaning in long-term use, the following scheme is provided: the air purifier comprises a machine body, anair inlet channel is formed in the machine body, the filter screen is arranged in the air inlet channel, a mounting block is fixedly mounted on the inner wall of the top side of the air inlet channel, and a mounting hole is formed in one side of the mounting block. The filter screen cleaning device is simple in structure, when the filter screen is blocked and needs to be cleaned after long-term continuous use, only one si