Princípio de purificação do novo ventilador de pressão positiva de tubo único
New fan is not the same, we'll talk about single tube of positive pressure, actually this kind of new structure fan is extremely simple, is to extract the outdoor air, the clean air filtered directly into indoor, because under normal air incompressibility, indoor air will be squeezed, and the Chinese house air tightness is generally do generally, so the air will be from your house door, The window gap is constantly pressed out, thus forming a cycle, which can be called the external cycle.
