Patent ID: 11961378
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC B  G | IPC B  G

Claim 0:
1. An aspirating smoke sensing device for fire detection, comprising: a charger, a charge collector, a controller, an air intake structure, and a negative pressure source for air path detection, wherein the air intake structure is communicated with an input port of the charger, an output port of the charger is communicated with the charge collector, an output port of the charge collector is connected to the negative pressure source for air path detection, and the controller is electrically connected to the charge collector;
the air intake structure is configured to obtain an air sample;
the charger is configured to perform a unipolar charging on the air sample, so as to output a unipolar charged air sample;
the charge collector is configured to obtain the unipolar charged air sample and separate charged particles with different particle-sizes in the unipolar charged air sample, so as to obtain charged particles of different particle-size grades;
the negative pressure source for air path detection draws the air sample into the charger and the charge collector, and discharges the air sample; and
the controller is configured to determine fire detection information according to charge quantities corresponding to the charged particles of different particle-size grades.