目前,多层住宅设计中采用小天井、大进深、台阶式方案越来越多,它能够增加建筑面积,多出户数,节约用地的效果也很显著。但有些住宅的小天井通风较差,天井内气流常常逆向串入室内,厨房油烟无法排出,底层光线阴暗潮湿,室内无法利用自然光线干活,居住条件受到影响。 At present, the use of small patios, large-intensity-deep, and step-by-step schemes in multi-storey residential designs has increased. It can increase the floor area, increase the number of households, and save the use of land. However, in some homes, the ventilation of the small patio is poor, and the air flow in the patio is often reversely cascaded into the room. The kitchen fumes cannot be discharged, and the underlying light is dark and damp. Indoors cannot use natural light to work and the living conditions are affected.