Ventilating system and method for controlling the same

Abstract

Ventilating system for introducing outdoor air and discharging room air, and method for controlling the same, the ventilating system including a duct for making a room and an outside of the room in communication, a ventilator connected to the duct for discharging room air to an outside of the room, and supplying outdoor air to the room through the duct, a window controller provided to each window for opening/closing the window individually, and a controller for controlling the ventilator and the window controller for ventilating the room. The method for controlling a ventilating system includes the steps of measuring conditions of room air and outdoor air, determining a ventilating method and a ventilating rate according to the measured conditions, and ventilating the room by opening/closing the window automatically, and putting a ventilator into operation according to a result of determination.

1 . A ventilating system comprising: 
 a duct for making a room and an outside of the room in communication;    a ventilator connected to the duct for discharging room air to an outside of the room, and supplying outdoor air to the room through the duct;    a window controller provided to each window for opening/closing the window individually; and    a controller for controlling the ventilator and the window controller for ventilating the room.    
   
   
       2 . The ventilating system as claimed in  claim 1 , further comprising a VOC sensor for measuring a content of volatile organic compounds of the room air.  
   
   
       3 . The ventilating system as claimed in  claim 1 , further comprising sensors for measuring conditions of outdoor air and room air.  
   
   
       4 . The ventilating system as claimed in  claim 3 , wherein the sensors include; 
 a room temperature sensor for measuring a temperature of the room air,    a room humidity sensor for measuring humidity of the room air,    an outdoor temperature sensor for measuring a temperature of the outdoor air, and    an outdoor humidity sensor for measuring humidity of the outdoor air.    
   
   
       5 . The ventilating system as claimed in  claim 1 , wherein the window controller makes the window to slide sideways to open/close the window.  
   
   
       6 . The ventilating system as claimed in  claim 1 , wherein the window controller pushes/pulls the window forward/backward to open/close the window.  
   
   
       7 . The ventilating system as claimed in  claim 1 , wherein the window controller includes; 
 a control unit for opening/closing the window, and    a driving unit connected to the control unit for generating a driving force.    
   
   
       8 . The ventilating system as claimed in  claim 7 , wherein the control unit includes; 
 a housing connected to the window, the housing having a helical hole, and    an elongated screw coupled to the driving unit and placed in the helical hole for moving the window connected to the housing as the screw is rotated by the driving unit.    
   
   
       9 . The ventilating system as claimed in  claim 8 , wherein the driving unit includes a driving motor coupled to the screw with a shaft.  
   
   
       10 . The ventilating system as claimed in  claim 8 , wherein the driving unit includes; 
 a gear box connected to one end of the screw, and    a driving motor coupled to the gear box with a shaft.    
   
   
       11 . The ventilating system as claimed in  claim 7 , wherein the control unit includes; 
 a driven gear connected to the window, and    a driving gear connected to the driving unit, and engaged with the driven gear, for being rotated by the driving unit to rotate the driven gear, for opening/closing the window.    
   
   
       12 . The ventilating system as claimed in  claim 11 , wherein the driven gear is coupled to the rotating shaft of the window with a shaft.  
   
   
       13 . The ventilating system as claimed in  claim 11 , wherein the driving unit includes a driving motor coupled to the driving gear with a shaft.  
   
   
       14 . The ventilating system as claimed in  claim 1 , wherein the controller determines a ventilating method and a ventilating rate taking the content of volatile organic compounds of the room air, and controls the ventilator and the window controller, accordingly.  
   
   
       15 . The ventilating system as claimed in  claim 14 , wherein the controller closes the window when the room air is polluted lower than a preset highest reference value.  
   
   
       16 . The ventilating system as claimed in  claim 14 , wherein the controller determines the ventilating method and the ventilating rate taking the outdoor temperature into account additionally when the room air is polluted higher than a preset highest reference value, and controls the ventilator and the window controller, accordingly.  
   
   
       17 . The ventilating system as claimed in  claim 16 , wherein the controller closes the window, and puts the ventilator into operation, for ventilating the room, if the outdoor temperature is outside of a present range.  
   
   
       18 . The ventilating system as claimed in  claim 16 , wherein the controller determines the ventilating method and the ventilating rate taking a temperature difference between the room and outside of the room if the outdoor temperature is within a preset range, and controls the ventilator and the window controller.  
   
   
       19 . The ventilating system as claimed in  claim 18 , wherein the controller opens the window to ventilate the room if the temperature difference between the room and outside of the room is within a preset range.  
   
   
       20 . The ventilating system as claimed in  claim 18 , wherein the controller closes the window and puts the ventilator into operation, for ventilating the room, if the temperature difference between the room and the outside of the room is outside of the preset range.  
   
   
       21 . A method for controlling a ventilating system comprising the steps of: 
 measuring conditions of room air and outdoor air;    determining a ventilating method and a ventilating rate according to the measured conditions; and    ventilating the room by opening/closing at least one window automatically, and putting a ventilator into operation according to a result of determination.    
   
   
       22 . The method as claimed in  claim 21 , wherein the step of determining a ventilating method and a ventilating rate further includes the step of determining a degree of pollution of the room air being within a preset range.  
   
   
       23 . The method as claimed in  claim 22 , wherein the degree of pollution of the room air is dependent on a content of volatile organic compounds of the room air.  
   
   
       24 . The method as claimed in  claim 22 , wherein the step of ventilating the room includes the step of closing the window if the degree of pollution of the room air is within a preset range.  
   
   
       25 . The method as claimed in  claim 22 , wherein the step of ventilating the room includes the step of closing the window and stopping the ventilator if the degree of pollution of the room air is lower than a lowest reference value.  
   
   
       26 . The method as claimed in  claim 22 , wherein the step of ventilating the room includes the step of closing the window and operating the ventilator at a low rate if the degree of pollution of the room air is higher than a lowest reference value and lower than a highest reference value.  
   
   
       27 . The method as claimed in  claim 22 , wherein the step of determining a ventilating method and a ventilating rate further includes the step of determining the outdoor temperature of being within a preset range if the degree of pollution of the room air is higher than a preset range.  
   
   
       28 . The method as claimed in  claim 22 , wherein the step of ventilating the room includes the step of closing the window and putting the ventilator into operation if the outdoor temperature is outside of a preset range.  
   
   
       29 . The method as claimed in  claim 27 , wherein the step of determining a ventilating method and a ventilating rate further includes the step of determining the temperature difference between the room and the outside of the room being within the preset range if the outdoor temperature is within the preset range.  
   
   
       30 . The method as claimed in  claim 29 , wherein the step of ventilating the room further includes the step of opening the window and stopping the ventilator if the temperature difference between the room and outside of the room is within a preset range.  
   
   
       31 . The method as claimed in  claim 29 , wherein the step of determining a ventilating method and a ventilating rate further includes the step of determining outdoor relative humidity of being within a preset range if the temperature difference between the room and the outside of the room is within a preset range.  
   
   
       32 . The method as claimed in  claim 31 , wherein the step of ventilating the room includes the step of opening the window to the maximum if the outdoor relative humidity is within a preset range.  
   
   
       33 . The method as claimed in  claim 29 , wherein the step of ventilating the room further includes the step of opening the window to the minimum if the outdoor relative humidity is outside of the preset range.  
   
   
       34 . The method as claimed in  claim 29 , wherein the step of ventilating the room further includes the step of closing the window and putting the ventilator into operation if the temperature difference between the room and the outside of the room is outside of the preset range.  
   
   
       35 . The method as claimed in  claim 29 , wherein the step of determining a ventilating method and a ventilating rate further includes the step of determining room relative humidity of being within a preset range if the temperature difference between the room and the outside of the room is outside of the preset range.  
   
   
       36 . The method as claimed in  claim 35 , wherein the step of ventilating the room further includes the step of closing the window and operating the ventilator at a maximum rate if the room relative humidity is within the preset range.  
   
   
       37 . The method as claimed in  claim 29 , wherein the step of ventilating the room further includes the step of closing the window and operating the ventilator at a minimum rate if the room relative humidity is outside of the preset range.