Heat exchange type ventilation device

Abstract

A heat exchange type ventilation device includes an supply air blower, a discharge air blower, a heat exchange element, and a pressure regulator. The supply air blower supplies outdoor air to an indoor space. The discharge air blower discharges indoor air to an outdoor space. The heat exchange element includes a heat exchanger plate. The heat exchanger plate separates an air supply path through which a supply air flow generated by the supply air blower flows, from an air discharge path through which a discharge air flow generated by discharge air blower flows, and allows sensible heat or total heat to be exchanged between the air supply path and the air discharge path (20). The pressure regulator is positioned upstream of the heat exchange element in the air supply path, and regulates pressure of the supply air flow.

1 . A heat exchange type ventilation device comprising:
 a supply air blower that supplies outdoor air to an indoor space;   a discharge air blower that discharges indoor air to an outdoor space;   a heat exchange element having a heat exchanger plate, the heat exchanger plate separating an air supply path through which a supply air flow generated by the supply air blower flows, from an air discharge path through which a discharge air flow generated by the discharge air blower flows, and the heat exchanger plate allowing sensible heat or total heat to be exchanged between the air supply path and the air discharge path;   a pressure regulator positioned upstream of the heat exchange element in the air supply path, the pressure regulator regulating pressure of the supply air flow;   a differential pressure detector that detects a differential pressure between a vicinity of an inlet of the air supply path in the heat exchange element and a vicinity of an outlet of the air discharge path in the heat exchange element; and   a controller that allows the pressure regulator to regulate the pressure of the supply air flow, based on the differential pressure detected by the differential pressure detector.   
     
     
         2 . The heat exchange type ventilation device according to  claim 1 , further comprising:
 a temperature detector that detects temperature of the outdoor air; and   a controller that allows the pressure regulator to regulate the pressure of the supply air flow, based on the temperature of the outdoor air detected by the temperature detector.   
     
     
         3 . (canceled) 
     
     
         4 . The heat exchange type ventilation device according to  claim 1 , wherein the pressure regulator is a damper configured to adjust an opening of the damper. 
     
     
         5 . The heat exchange type ventilation device according to  claim 1 , wherein the supply air blower has a control function to keep air volume constant regardless of a pressure change in the supply air flow.