| 摘要 |
<p>1. Spirometric device for sampling and analyzing inhaled and exhaled aerosols, comprising a sampling train fot the exhalation by the living being and a second sampling train for a reference atmosphere, wherein each train contains an inlet (1, 1') for the aerosols and an impinger (5, 5') parallel thereto, characterized in that the trains are symmetrically arranged and each contains a tube (2, 2') for creating a partial vacuum, a pressure converter absorbing the pressure changes occurring in the vacuum tube located in the sampling train for the exhalation of the living being, a magnetic valve (3, 3') actuated by the output signal of the pressure converter, and a spirometer (4, 4') with variable volume, wherein the movable bell jars of the spirometer are interconnected by a counter-weight connection such that a certain displacement of the movable bell jar of the one spirometer (4) brings about an identical displacement of the bell jar of the other spirometer (4'), wherein the parallel disposed impinger (5, 5') is fed by the spirometer and compressed by the flow-regulating pumps (P1 , P2 ) and wherein the air expulsion in the impinger (5, 5') is kept constant at the inlet side of the spirometer by a flow distributer (13) with a humidifier (6), a micrometer valve (14), a flow meter (15) and a compressed air tank (7) connected in series thereto, and at the outlet side of the spirometer by a flow distributer (18) with a micrometer'valve (19), a flow meter (20) and a vacuum pump (P3 ) connected in series thereto.</p> |
