Intermediate-stage air entraining structure of high-load fan

• Main Authors: ZHAO YIJIAN, SHAN YUJIAO, LIU GONGBO, LI JIAN, SHI BAOYU, BAO YUTIAN, LI ANG, SUN FANGQI, YAN DONGMEI, GUO QIANG, SHAO ZHULEI, DING XIAOXU, ZHAO YAN, ZHU ZHENKUN, YANG ZHIZHONG
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2023
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention belongs to the technical field of engine design, and particularly relates to a high-load fan intermediate-stage air entraining structure. An air entraining port is formed between a stator blade (1) and a rotor blade (2) of the fan casing, an air entraining pipeline (3) is connected through the air entraining port, the air entraining pipeline (3) is connected with the front end of an air collection cavity (4) on the outer side of the fan casing, and the rear end of the air collection cavity (4) is connected with an exhaust pipeline (5) through an exhaust port. The air entraining pipeline (3) obliquely extends backwards and outwards from the end connected with the fan casing, the air collecting cavity (4) extends backwards on the outer side of the fan casing, and the central axis of the air entraining pipeline (3) and the central axis of the exhaust pipeline (5) are staggered by a certain distance in the air collecting cavity (4). The fan margin is improved, and the influence of the structure on t