Why does my air purifier only blow air out sideways?

Air only comes out of one side of my hepa air purifier, if you put your hand in front of it you can't even feel any air coming out of the middle, only the far extreme of one side. To feel the main breeze of air you actually have to put your hand completely to the side of the purifier, where there isnt even a grate for air to come out of anymore, and it feels like the air is coming out of the solid plastic, which is really weird. Is this normal?