便携式给氧复苏呼吸器的设计

目的：设计一款具有复苏和吸氧双重功能的便携式呼吸器。方法采用正压式、气动气控的设计方案，对关键部件进行了理论计算，利用三维设计软件 Solidedge 进行了虚拟样机的构建、结构的校核，最后对样机进行了加工装配和测试。结果经过实验测试，所研制的呼吸器在3～5．5 bar 气源压力下能实现急救复苏和辅助吸氧功能，给氧流量10～12 L／min，达到预期技术指标。结论便携式给氧复苏呼吸器具有体积小、重量轻、操作简单、便于携带、无需电源等特点，具有广阔的应用前景。

Design of a portable oxygen supply respirator

Objective To design a portable respirator that can facilitate both cardiopulmonary resuscitation and auxiliary oxygen inhalation.Methods Positive pressure design as well as pneumatically powered and controlled design were adopted for this respirator.Theoretical calculation of key components was carried out.The virtual prototype was established and the structure checked using the three dimensional design software Solidedge.Finally,the prototype was processed,assembled and tested.Results Experimental tests proved that the designed respirator was capable of cardiopulmonary resuscitation and auxiliary oxygen inhalation when oxygen supply pressure reached 3 -5.5 bar.It could achieve the expected technical indicators,such as the oxygen flow rate that was between 10 and 12 L/min.Conclusion The portable oxygen supply respirator has the advantages of a small size,light weight,simple operation,and automatic power supply.It has broad prospects of application.