ASPIRATOR AND VEHICLE AIR-CONDITIONING DEVICE USING SAME

An object is to provide an aspirator capable of increasing the amount of aspirated secondary air and improving performance and to provide a vehicle air conditioner using the same. The aspirator includes a nozzle 15 that aspirates secondary air; a main body 17 that forms a scroll-shaped airflow path 16 on the outer circumference of the nozzle 15; a primary-air inflow path 18 that tangentially communicates with the airflow path 16; and a diffuser that is connected to an open end of the main body 17 and has a throat portion at which a tip portion of the nozzle 15 is disposed. An inner wall 18A of the primary-air inflow path 18, which communicates with the scroll-shaped airflow path 16, is offset outward from the center of the nozzle 15, and primary air introduced from the primary-air inflow path 18 flows into the scroll-shaped airflow path 16 from one direction.