Patent ID: 8136416

Claim:
A personal nanoparticle sampler comprising: a pre-classifier having a first chamber and an air inlet extending from the said first chamber to the outside of the said pre-classifier; a nozzle connected to said pre-classifier, the said nozzle having a passage disposed in connection with the said first chamber of the said pre-classifier, the said passage having a cross section gradually reducing in the direction apart from said first chamber; a connector connected to one end of the said nozzle opposite to the said pre-classifier, the said connector having a second chamber disposed in connection with the said passage of the said nozzle; a final filter pack connected to the said connector, the said final filter pack having a third chamber and a suction passage, the said third chamber disposed in connection with the said second chamber of the said connector, the said suction passage extending from the said third chamber to the outside of the said final filter pack; and a rack having a top plate, two sliding rods, a bottom plate, and two springs, the said top plate being stopped outside the said final filter pack, the said sliding rods being connected to the said top plate, the said bottom plate being coupled to the periphery of the said pre-classifier and movable along the said sliding rods, the said springs being bilaterally connected between the said top plate and the said bottom plate.