POWER SAVING VENTILATION SYSTEM

摘要

A ventilation system is provided to supply proper amount of recirculation air after filtering, to extend life span of a fan-and-motor for the recirculation of air to an indoor space, and to control the amount of re-circulated air to optimize indoor temperature. A ventilation system includes a first duct(4a) for supplying outside air, a first fan-and-motor(8) installed to the first duct, a second duct(4b) for delivering returned air, a second fan-and-motor(16) parallel with the first fan-and-motor and installed to the second duct to re-circulate or to exhaust air, a third duct(4c) connected in parallel with the outlet of the first duct, and a fourth duct(4d) connected to the outlet of the second fan-and-motor to discharge air to the outside.