摘要：【中文】本发明涉及环境气溶胶测量技术领域，更具体地，涉及一种模拟肺呼吸装置。该装置包括密封箱、肺模型、采气袋和气泵，所述肺模型、采气袋均设置于密封箱内部，并保持相互独立；所述肺模型连接有通向密封箱外部的肺管路；所述气泵连接有抽吸管路，抽吸管路设有第一阀门、第二阀门，第一阀门、第二阀门、气泵形成串联回路；所述采气袋接通抽吸管路，有且接通至第一阀门、第二阀门之间；所述第一阀门、第二阀门均为三通阀，并各保持一个阀门口连通密封箱外部空气；气泵从采气袋抽气，采气袋收缩，密封箱内气压变小，气流从肺管路进入肺模型，完成吸气过程；气泵向采气袋充气，采气袋膨胀，密封箱内气压变大，气流从肺模型沿肺管路流出，完成呼气过程。 【EN】The invention relates to the technical field of environmental aerosol measurement, in particular to a lung breathing simulation device. The device comprises a sealing box, a lung model, an air collecting bag and an air pump, wherein the lung model and the air collecting bag are arranged in the sealing box and are kept independent of each other; the lung model is connected with a lung pipeline leading to the outside of the seal box; the air pump is connected with a suction pipeline, the suction pipeline is provided with a first valve and a second valve, and the first valve, the second valve and the air pump form a series loop; the gas collecting bag is communicated with a suction pipeline and is communicated between the first valve and the second valve; the first valve and the second valve are three-way valves, and each valve port is communicated with the air outside the seal box; the air pump pumps air from the air collecting bag, the air collecting bag contracts, the air pressure in the sealing box becomes small, and air flow enters the lung model from the lung pipeline to finish the air suction process; the air pump inflates the air production bag, the air production bag expands, the air pressure in the seal box becomes large, the air flow flows out from the lung model along the lung pipeline, and the expiration process is completed.