Ventilating system

Abstract

The present invention relates to ventilating systems, and more particularly, to a ventilating system having a heat exchanger for exchanging heat of room air being discharged to an outside of a room with heat of outdoor air supplied to the room. The present invention provides a ventilating system including a case having a first flow passage for guiding outdoor air to a room, and a second flow passage for guiding room air to an outside of the room, and a fan unit in the case, the fan unit having a first side for drawing the outdoor air from the first flow passage, a second side for drawing the room air, and a circumferential side for discharging the outdoor air drawn through the first side to the room, and discharging the room air drawn through the second side to an outside of the room.

1 . A ventilating system comprising: 
 a case having a first flow passage for guiding outdoor air to a room, and a second flow passage for guiding room air to an outside of the room; and    a fan unit in the case, the fan unit having a first side for drawing the outdoor air from the first flow passage, a second side for drawing the room air, and a circumferential side for discharging the outdoor air drawn through the first side to the room, and discharging the room air drawn through the second side to an outside of the room.    
   
   
       2 . The ventilating system as claimed in  claim 1 , wherein the first side and the second side are opposite.  
   
   
       3 . The ventilating system as claimed in  claim 1 , wherein the fan unit includes; 
 a first fan for drawing the outdoor air through the first side and supplying the outdoor air to the room, and    a second fan for drawing the room air through the second side and discharging to an outside of the room.    
   
   
       4 . The ventilating system as claimed in  claim 3 , wherein the first fan and the second fan rotate around the same shaft.  
   
   
       5 . The ventilating system as claimed in  claim 1 , further comprising a heat exchanger in the case for making the outdoor air supplied to the room, and the room air discharged to the outside of the room to heat exchange.  
   
   
       6 . The ventilating system as claimed in  claim 5 , wherein the outdoor air passes through the heat exchanger before the outdoor air is drawn into the first fan, and the room air passes through the heat exchanger after the room air is discharged from the second fan.  
   
   
       7 . The ventilating system as claimed in  claim 3 , further comprising an air supply scroll in the case, for housing the first fan and guiding the air drawn into the first fan, and 
 an air discharge scroll separated from the air supply scroll, for housing the second fan and guiding the air drawn into the second fan.    
   
   
       8 . The ventilating system as claimed in  claim 7 , wherein the air supply scroll and the air discharge scroll include sides each having an outlet for discharging the air drawn by the first fan or the second fan to the room.  
   
   
       9 . The ventilating system as claimed in  claim 7 , wherein the air supply scroll includes an inlet space formed as one side of the air supply scroll is spaced a predetermined distance away from an inside surface of the case, to make the air supply scroll and the first flow passage in communication.  
   
   
       10 . The ventilating system as claimed in  claim 9 , wherein the inlet space includes an upward slope for reducing a flow resistance of the air flowing from the first flow passage to the inlet space.  
   
   
       11 . The ventilating system as claimed in  claim 7 , wherein the air discharge scroll includes a side having an air discharge space in communication with the second flow passage formed therein.  
   
   
       12 . The ventilating system as claimed in  claim 5 , further comprising a bypass flow passage for bypassing the heat exchanger such that the outdoor air is supplied to the first fan directly without passing through the heat exchanger.  
   
   
       13 . The ventilating system as claimed in  claim 9 , further comprising a first damper for opening/closing the inlet space.  
   
   
       14 . The ventilating system as claimed in  claim 11 , further comprising a second damper for opening/closing the air discharge space.  
   
   
       15 . The ventilating system as claimed in  claim 12 , further comprising a third damper for opening/closing the bypass flow passage.  
   
   
       16 . A ventilating system comprising: 
 a fan unit room having a first fan for drawing outdoor air in an axial direction, and discharging the outdoor air in a radial direction, and a second fan arranged over or under the first fan in parallel to the first fan, for drawing room air in an axial direction and discharging the room air in a radial direction, mounted therein;    an air supply flow passage making the room and an outside of the room in communication for guiding the outdoor air to the room by using the first fan; and    an air discharge flow passage making the room and an outside of the room in communication for guiding the room air to the outside of room by using the second fan.    
   
   
       17 . The ventilating system as claimed in  claim 16 , wherein the fan unit room includes; 
 a first space for housing the first fan, and    a second space spaced from the first space for housing the second fan.    
   
   
       18 . The ventilating system as claimed in  claim 16 , wherein the second fan has an air flow rate greater than an air flow rate of the first fan.  
   
   
       19 . The ventilating system as claimed in  claim 17 , wherein the first space includes one side having an inlet space formed therein with a predetermined opened portion so as to be in communication with the air supply flow passage, and the second space includes one side having an air discharge space formed therein with a predetermined opened portion so as to be in communication with the air discharge flow passage.  
   
   
       20 . The ventilating system as claimed in  claim 16 , wherein the fan unit room has a side having an outlet for discharging drawn air to the room.  
   
   
       21 . The ventilating system as claimed in  claim 16 , further comprising a heat transfer space for making the air being drawn into the room and the air being discharged to an outside of the room to heat exchange, and a bypass flow passage for the air being drawn into the room not to pass through, but to bypass the heat transfer space.  
   
   
       22 . The ventilating system as claimed in  claim 21 , wherein the bypass flow passage includes a bypass damper for opening/closing the bypass flow passage.  
   
   
       23 . The ventilating system as claimed in  claim 16 , wherein the air supply flow passage includes an air supply damper for opening/closing the air supply flow passage.  
   
   
       24 . The ventilating system as claimed in  claim 16 , wherein the air discharge flow passage includes an air discharge damper for opening/closing the air discharge flow passage.  
   
   
       25 . A ventilating system comprising: 
 a case having an air supply flow passage for guiding outdoor air to the room, and an air discharge flow passage for guiding room air to an outside of the room;    a double suction type centrifugal fan having an air supply fan for drawing the outdoor air through the air supply flow passage, and an air discharge fan for drawing the room air and discharging a portion of the room air to an outside of the room through the air discharge flow passage, and discharging the rest to the room, wherein the air discharge fan has a height greater than a height of the air supply fan, and the air supply fan and the air discharge fan are arranged in an up/down direction;    a heat exchanger for making the air being drawn into the room and the air being discharged to an outside of the room to heat exchange; and    a bypass flow passage for making the air being drawn into the room, not to pass through, but to bypass the heat exchanger, such that the air is drawn into the air supply fan, directly.    
   
   
       26 . The ventilating system as claimed in  claim 25 , further comprising an air supply scroll in the case, for housing the air supply fan and guiding the air drawn into the air supply fan, and 
 an air discharge scroll separated from the air supply scroll, for housing the air discharge fan and guiding the air drawn into the air discharge fan.    
   
   
       27 . The ventilating system as claimed in  claim 26 , wherein the air supply scroll includes an inlet space formed as one side of the air supply scroll is spaced away from an inside surface of the case so as to be in communication with the air supply flow passage, and the air discharge scroll includes one side having an air discharge space in communication with the air discharge flow passage formed therein.  
   
   
       28 . The ventilating system as claimed in  claim 26 , wherein the air supply scroll and the air discharge scroll each has an outlet for discharging drawn air to the room.  
   
   
       29 . The ventilating system as claimed in  claim 25 , further comprising: 
 a bypass damper for opening/closing the bypass flow passage,    an air supply damper for opening/closing the air supply flow passage, and    an air discharge damper for controlling an air flow rate passing through the an discharge flow passage.    
   
   
       30 . The ventilating system as claimed in  claim 25 , further comprising: 
 an air cleaning filter for filtering outdoor air being supplied to the room through the air supply fan, and room air being discharged to the room through the air discharge fan.