| 摘要 |
An antigen supply unit (1) principally comprising a tubular body (3) extending in the vertical direction, wherein an air inlet (5) for sucking air in an antigen exposure room is provided at the lower end of the tubular body, an axial fan (6) producing air flow flowing upward in the axial direction of the tubular body is fixed above the air inlet of the tubular body, and a supply opening (4) to which high concentration antigen is ejected from a dust feeder on the outside of the antigen exposure room is provided above the axial fan of the tubular body. The antigen supply unit (1) is installed in close proximity to the outside air outlet of the antigen exposure room and high concentration antigen supplied from the dust feeder on the outside of the antigen exposure room is mixed with air in the antigen exposure room sucked from the air inlet and diluted. It is then blown from the upper end of the tubular body toward the outside air outlet (2) and mixed with outside air from the outside air outlet before filling the antigen exposure room (A). |
