In fact, of the miniaturization and the mute method "Blower Fan" it can be both conflicting yes. That is less turbulence to achieve steady airflow (laminar flow). Thus to curb the noise caused by the turbulence. To this end, we first take steps to airflow visualization. Simultaneously as with CFD (Computational Fluid Dynamics) analysis and use blowers to experiment repeatedly sell the blower fan and volute (swirling wind path) shape. Within the blower airflow visualization with the Japan Research Institute car parts Group's complete cooperation.