Patent ID: 7591720
Filing Date: 2009-09-22
Classification: F24F,Y02B

Abstract:
1. A ventilating system comprising: a case locatable inside of a room, the case having a lower space, an upper space in fluid communication with the lower space, and a plurality of sidewalls, a first one of the sidewalls being locatable next to a first wall of the room, the first one of the sidewalls having: an air-circulating passage in the case for communicating the room with the air-supplying passage, to introduce the indoor air into the case, and to re-supply the introduced indoor air into the room, the air-circulating passage having a first inlet formed in the same bottom surface of the lower space and an air-discharging hole formed in a lateral-side surface of the upper space; an air-supplying fan located in the air-supplying duct for introducing the outdoor air into the room; an air-discharging fan located in the air-discharging duct for discharging the indoor air outside of the room; a preheat exchanger provided at an intersection between the air-supplying duct and the air-discharging duct for heat-exchanging between the outdoor air and the indoor air; and a fan vertically located over the first inlet in the air-circulating passage, the fan located in the upper space to axially draw in from the lower space the outdoor air introduced through the inlet opening from the air-supplying passage and/or the introduced indoor air through the first inlet from the air-circulating passage and radially blow out the drawn air through the air-discharging hole via the upper space, wherein the indoor air is introduced into the case from a bottom-side one of the sidewalls and re-supplied into the room from a lateral-side one of the sidewalls at an upper position thereof, and wherein the air-supplying fan, the air discharging fan and the preheat exchanger are located outside of the case and the room.