Particle differential mobility analyzer and particle separating and counting apparatus using the same

A particle separating and counting apparatus, comprising:

• a particle differential mobility analyzer, comprising:
• a mass flow controller connected to a clean dry gas storage tank and electrically connected to a controller, to output a clean dry gas at a mass flow rate;
• a temperature sensor and a pressure sensor connected to the mass flow controller and electrically connected to the controller, to sense a temperature and a pressure of the clean dry gas, generate temperature information and pressure information, and send the temperature information and the pressure information to the controller, wherein the controller adjusts the mass flow rate to a first volume flow rate based on the temperature information and the pressure information;
• and
• a particle separation chamber applied to an electric field, and comprising:
• a clean gas receiving end connected to the mass flow controller, to receive the clean dry gas input at the first volume flow rate;
• an aerogel receiving end receiving aerogel input at a second volume flow rate, wherein a ratio of the second volume flow rate to the first volume flow rate ranges from 1:2 to 1:10;
• a mixed gas outputting end outputting a mixed aerogel obtained by mixing the aerogel and the clean dry gas at a third volume flow rate, wherein the third volume flow rate is equal to the second volume flow rate, and the third volume flow rate is less than the first volume flow rate;
• and
• a residual gas discharging end, discharging a remaining mixed aerogel at a fourth volume flow rate, wherein the fourth volume flow rate is equal to the first volume flow rate;
• and
• a counting apparatus extracting the mixed aerogel at the third volume flow rate.