Patent ID: 8734575
Filing Date: 2014-05-27
Classification: F24F

Abstract:
1. An airflow controlling device comprising: a bacteria counter that counts bacteria in a controlled space and obtains a bacteria count; a first smoothing processing unit that processes the bacteria count using a predetermined first smoothing time index; a second smoothing processing unit that processes the bacteria count using a predetermined second smoothing time index; a bacteria reducing capability storage that stores in advance a bacteria reducing capability of a bacteria reducing device, relative to each flow rate of airflow into the controlled space; a first flow rate evaluator that references the bacteria reducing capability storage to select a flow rate matching a bacteria reducing capability compatible with an increase in bacteria forecasted from a processing result of the first smoothing processing unit; a second flow rate evaluator that references the bacteria reducing capability storage to select a flow rate matching a bacteria reducing capability compatible with an increase in bacteria forecasted from a processing result of the second smoothing processing unit; and a flow rate determining device that selects a flow rate of airflow into the controlled space based on the flow rate selected by the first flow rate evaluator and the flow rate selected by the second flow rate evaluator.