Patent ID: 9062892
Filing Date: 2015-06-23
Classification: F24F,Y02B

Abstract:
1. A ventilation system, comprising: a ventilation device including a casing having an air supply passage for introducing outside air into a room and an exhaust passage for exhausting room air to an outside, and an air supply fan placed in the air supply passage and configured to be driven by a DC motor, draw outside air, and supply the outside air to the room; a booster fan placed upstream in supply air of the air supply fan, the booster fan being configured to strengthen outside-air intake power of the air supply fan when the ventilation device is actuated, the booster fan being capable of causing the air supply fan to run at idle if the booster fan is running while the ventilation device is stopped; a ventilation control unit configured to actuate the air supply fan when actuation of the ventilation device is requested; and a booster fan control unit configured to prevent the booster fan from causing the air supply fan to run at idle at a time at which the ventilation device is actuated from a stopped state by: stopping the booster fan when the ventilation device is in the stopped state, and upon a request of actuation of the ventilation device in the stopped state, actuating the stopped booster fan after the ventilation control unit has actuated the air supply fan.