Differential pressure reduction device in common part and dedicated part in building caused by stack effect

The present invention relates to an apparatus for reducing a differential pressure between a common part and a dedicated part in a building caused by the stack effect. The present invention provides an apparatus for reducing the differential pressure between a common part and a dedicated part in a building caused by the stack effect, comprising: a motion sensor sensing access by a building user at a front entrance to open and close the front entrance of the dedicated part for enabling the building user to enter and exit the dedicated part and the common part of the same floor; a window opening and closing device automatically opening and closing a window of the common part installed for ventilating the common part of the building; and a control device, if the motion sensor senses the access of the user to the front entrance, calculating a pressure difference between the dedicated part and the common part to compare the pressure difference with a pressure setup value (Pa) for opening the window of the common part, and if the calculated pressure difference between the dedicated part and the common part is equal to or greater than the pressure setup value for opening the window of the common part, opening the window of the common part through the window opening and closing device to introduce or discharge air into or from the building such that the pressure difference between the dedicated part and the common part can be reduced. The present invention releases an excessive pressure difference caused by the stack effect by opening an individual window of each floor to reduce a continuous pressure difference in accordance with design changes of the building and also to reduce an intermittent pressure difference, introducing external air by opening the window of the common part to release an excessive pressure difference in accordance with the stack effect even without using an air conditioning apparatus within the building, and individually controlling the window of the common part on each floor to maintain and manage the pressure difference in accordance with the stack effect aggravated as it goes away from a neutral zone, more timely and more conveniently. 본 발명은 연돌효과에 의해 발생하는 건물 내 공용부와 전유부의 차압 저감장치에 관한 것으로, 본 발명은 건물의 사용자가 동일 층의 전유부와 공용부를 출입하는 상기 전유부의 현관을 개폐하기 위하여 상기 현관에 접근하는 것을 감지하는 동작센서; 상기 건물의 공용부를 환기시키기 위해 설치된 공용부 창호를 자동으로 개폐하는 창호 개폐장치; 및 상기 동작센서를 통해 상기 현관에 사용자가 접근하는 것이 감지되면, 상기 전유부와 상기 공용부 사이의 압력 차를 산출하여 상기 공용부 창호의 개방을 위한 압력 설정값(Pa)과 비교하며, 상기 산출된 전유부와 상기