Ventilation apparatus capable of recovering thermal energy

Abstract

Provided is a ventilation apparatus for a building to recover thermal energy. The ventilation apparatus includes a main body, an absorption filter, a heat exchanger, first and second blowing fans, and a water supply pipe. The main body has air exhaust ports for discharging indoor air out of the building and air supply ports for supplying outdoor air into the building. The absorption filter is disposed in the main body to cool exhaust air. The heat exchanger is disposed in the main body to exchange heat between supply air and exhaust air. The first and second blowing fans are disposed in the main body. The first blowing fan discharges indoor air and the second blowing fan supplies outdoor air. The water supply pipe supplies water to the absorption filter.

What is claimed is: 
     
         1 . A ventilation apparatus for a building to recover thermal energy, comprising:
 a main body having air exhaust ports for discharging indoor air out of the building and air supply ports for supplying outdoor air into the building;   an absorption filter disposed in the main body to cool exhaust air;   a heat exchanger disposed in the main body to exchange heat between supply air and exhaust air;   first and second blowing fans disposed in the main body, the first blowing fan discharging indoor air and the second blowing fan supplying outdoor air; and   a water supply pipe for supplying water to the absorption filter.   
     
     
         2 . The ventilation apparatus of  claim 1 , further comprising an air conditioner for cooling indoor air and a condensate water drain pipe for discharging condensate water of the air conditioner, wherein the condensate water drain pipe is configured to be connected to the water supply pipe. 
     
     
         3 . The ventilation apparatus of  claim 1 , further comprising an open/close door for switching a direction of exhaust air passing the heat exchanger and a water discharge pipe for discharging water passing the absorption filter to the outside. 
     
     
         4 . The ventilation apparatus of  claim 1 , further comprising a heater core disposed in the main body to heat supply air. 
     
     
         5 . The ventilation apparatus of  claim 1 , further comprising control doors disposed in the air supply ports and the air exhaust ports of the main body, respectively, a temperature and humidity sensor disposed in the main body, and a controller for automatically controlling an open degree of the control door according to a temperature and a humidity of air sensed by the temperature and humidity sensor. 
     
     
         6 . The ventilation apparatus of  claim 1 , further comprising a branch door disposed at one of the air exhaust ports to stop indoor air from being supplied into the main body and a branch duct opened by the branch door to supply outdoor air to the air exhaust ports.