COLLECTION DEVICE AND DETECTION DEVICE

摘要

A collection device (100) collects particles in a fluid introduced into a housing (1) on the surface of a collection plate (200) set inside the housing. A nozzle plate (2) is placed on the upper surface of the housing, and the driving of a fan (3) causes outside air to be introduced into the housing at a prescribed flow rate through nozzles (2A) formed by cutting holes in the nozzle plate. A driving unit (5) causes the collection plate to move, through an opening (1A), between a first position that is outside the housing and a second position that is inside the housing and directly in front of the direction in which the nozzles have been formed through the cutting of holes. The collection device is provided with a fixing tool (61) for causing the resistance to the fluid passing through the opening to be greater than the resistance to the fluid passing through the nozzle when the collection plate is in the second position.