本發明係為一種污染物排放裝置及使用該裝置之斜向單氣簾式排油煙機，其後側係緊鄰一牆，包括一吹氣裝置以及一吸氣罩，該吹氣裝置設有一長形吹氣端，且該長形吹氣端係設置於一平檯或爐台檯面之前側，以分別向上噴出空氣噴流；而該吸氣罩係安裝於平檯或爐台檯面之上方一段距離處，具有一長形且開口朝下的抽氣端，該長形抽氣端連接一抽氣機，以形成朝上的吸力，且該長形抽氣端與長形吹氣端平行，該長形抽氣端由長形吹氣端的正上方朝向牆之方向偏移一距離。藉以在抽氣機運轉時，使長形抽氣端與長形吹氣端之間形成一個幾近二維的斜向氣簾，以排除被包圍於斜向單氣簾與牆之間的油煙或有害氣體，降低污染物的散逸，並增強對抗週遭擾動氣流的能力。The present invention relates to a pollutant removing device and an oblique single air curtain range hood using the device. The rear side of the range hood is adjacent to a wall and the range hood includes an air blow device and a suction device. The air blow device has an elongate air blow slot that is provided in front of a counter top and through which air is blown upward. The suction device is located above the counter top and includes an elongate suction opening that is connected with a suction machine to produce upward suction force. The elongate suction opening is parallel to the elongate air blow slot in a way that the elongate suction opening is above and spaced from the elongate air blow slot toward the wall. By means of the operation of the suction machine, an oblique air curtain that is nearly two-dimensional is formed between the elongate suction opening and the elongate air blow slot. The gas or harmful gas located between the oblique air curtain and the wall can be sucked via the elongate suction opening. Consequently, the escape of pollutants is decreased and the ability against interference of sucking harmful gas resulted from ambient air turbulence can be enhanced.