한국보건산업진흥원 Korea Health Industry Development Institute
등록번호
TRKO201400018514
DB 구축일자
2014-11-29
초록
。연구결과 연구결과로서 의료용 산소농축기의 기본이 되는 소형 2-Bed 시스템의 시제품을 확보하였다. 제작한 Prototype은 수정형 압력평형 단계를 포함하는 6cycle 방식으로 운전되도록 설계되었고, 공정을 Single-chip board를 통하여 제어하도록 제작되었다. 개발된 Prototype을 시험 운전하여 성능평가를 수행하였다. 농축산소농도는 개발된 Prototype은 제품량 5LPM 기준으로 92±1%, 3LPM 기준으로 94±1.5% 농축산소를 발생하였다.
Abstract▼
Oxygen concentrator is a device to be prescribed for COPD patients who require oxygen therapy, and supplies required amount of oxygen in long-term base. This study aims to develop a prototype model of the concentrator preceeding the commercial production, and to grasp technical information, know-how
Oxygen concentrator is a device to be prescribed for COPD patients who require oxygen therapy, and supplies required amount of oxygen in long-term base. This study aims to develop a prototype model of the concentrator preceeding the commercial production, and to grasp technical information, know-how, and methodologies during the course of research activities. The number of COPD patients are ever growing mainly due to accumulated effects by the smoking, air pollution, and work environment. In addition, as the economy improves, participation of the elder1y in the oxygen treatment attributes to the further growth of demand. Among the oxygen supply systems, the concentrator has merits in the aspects of weight, operation, refi1l, volume, mobility and safety when compared to other devices such as high pressure cylinder and liquidized oxygen tank. Therefore, the future of the concentrator business is especially bright in the domestic market, considering that the product entirely depends on the imported system and potential market increase. This study focuses on the assessment of the prototype and related technology for fabrication of the concentrator. The study was planned as a three-year research. In yearly basis, the emphasis was layed on the development of basic apparatus and operation conditions (1st year), design and fabrication of the prototype (2nd year), and fabrication/improvement of the prototype (3rd year), respectively. The first year study covers the development of basic apparatus and operation conditions for the concentrator system. The research includes the characterization of the employed Zeolite, the dynamic properties of the adsorption bed, break-though, and productivity of the two-bed system, by utilizing the experimental results as well as numerical analysis. During the second year, the prototype was designed by evaluating and improving the basic apparatus. The control unit and frame were added to mobilize the system. For further improvement of the system, pressure equalization step was embedded in the PSA cycles. The operation conditions including the cycle time and equalization flow rate were optimized by experimental studies and numerical simulations. Based on the 2nd year research, the prototype was fabricated and tested during the third year. The electrical and pneumatic circuits are developed. The system was modified to meet the requirement as a medical devices as well as a home appliance. The product design was completed by developing and assembling the cover, base, and frams with suitable mobility. Finally, the developed system was tested and evaluated. As the results of this study, an oxygen concentration system was developed on the basis of small-scale 2-bed with 6 cycle adsorption steps. The related operation conditions, electric and pneumatic circuit, control units, and parts are obtained. The study also yielded sufficient amount of experimental data, numerical analysis program, and design layout for the system. The developed model generates oxygen with 94±1% purity under production rate of 5 litters per minute. A certified test witnessed that there was no harmful gas component in the product and standard regulation for the medical purpose was met. As stated above, the future of the developed concentrator seems bright. It is expected that this study triggers commercialization and mass production of the system in the domestic market. The technology is applicable to oxygen supply systems such as fire station, diving gear, emergency vehicles, as well as sports activity. It also may provide alternative solutions in environmental issues such as the waste water treatment and isolation of harmful gaseous components which necessitate the concentrated form of oxygen.
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