Ventilation system

Abstract

The present invention relates to a ventilation system. According to a ventilation system of an embodiment of the present invention, it is possible to supply constant air flow to each floor or home, regardless of changes in environment outside a building, by connecting a ventilator to a center duct that sucks external air and supplies it to each floor or home, or sucks internal air of each floor of home and discharges it to the outside the building.

1 . A ventilation system comprising:
 one or more ventilators which are provided for each floor within a building;   a supply duct connected to the ventilator to introduce external air;   an exhaust duct connected to the ventilator to exhaust internal air;   a center duct which is provided in the building and longitudinally extends through a plurality of floors; and   a blowing unit that is provided at one side of the center duct and forcibly blows the air in the center duct,   wherein one of the supply duct and the exhaust duct is connected to the center duct and the other extends outside the building through the outer wall of the building.   
     
     
         2 . The ventilation system according to  claim 1 , wherein the center duct is provided with at least one pressure sensor, and the blowing unit is configured to adjust the amount of air flowing inside the center duct on the basis of the value measured by the pressure sensor. 
     
     
         3 . The ventilation system according to  claim 2 , wherein the pressure sensor is disposed in an upper end portion of the center duct. 
     
     
         4 . The ventilation system according to  claim 3 , wherein the blowing unit is disposed at a lower end portion of the center duct. 
     
     
         5 . The ventilation system according to  claim 1 , further comprising:
 a heat exchange element provided inside the ventilator, external air and internal air exchange heat with each other therethrough;   a discharge duct connected to the ventilator, which guide the external air into indoor;   a suction duct connected to the ventilator, which guide the internal air into the ventilator.   
     
     
         6 . The ventilation system according to  claim 1 , wherein a plurality of homes exists on each floor and the plurality of the ventilators are respectively provided for the homes. 
     
     
         7 . The ventilation system according to  claim 1 , wherein the center duct extends from the lowermost end to the uppermost end of the building. 
     
     
         8 . The ventilation system according to  claim 1 , wherein the supply duct is connected to the center duct and the blowing unit sucks the air outside the building and supplies the air into the center duct. 
     
     
         9 . The ventilation system according to  claim 1 , the exhaust duct is connected to the center duct and the blowing unit discharges the air inside the center duct to the outside of the building. 
     
     
         10 . The ventilation system according to  claim 6 , further comprising:
 an air supply blowing unit disposed in the ventilator, for blowing the external air into each home of the building; and   an air exhaust blowing unit disposed in the ventilator, for blowing the internal air in each home out to the outside of the building.   
     
     
         11 . The ventilation system according to  claim 10 , further comprising a controller,
 wherein the controller is configured to increase or decrease RPM of the fan of the air supply blowing unit and/or the air exhaust blowing unit of each ventilator, in accordance with the pressure change inside the respective homes and/or the pressure change outside the building.   
     
     
         12 . The ventilation system according to  claim 11 , wherein the controller is configured to adjust the RPM of the fan on a basis of the current change supplied to a fan motor of the air supply blowing unit and/or the air exhaust blowing unit in accordance with the pressure change inside the respective homes and/or the pressure change outside the building.