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전동식 냉매 압축기의 베어링 내구성 확보를 위한 기구부 밸런스에 관한 연구
임종학(Jonghak Lim),도민훈(Minhun Do),이지원(Jiwon Lee),권성혁(Sunghyuk Kwon),강지훈(Jihoon Kang),정재령(Jaeryeong Jeong),이호성(Hoseong Lee),김명현(Meonghyun Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
In this study, the results of the durability test of bearing according to the mass balance of the electric refrigerant compressor are confirmed. Currently, bearing damage is frequently occurring in electric refrigerant compressors. Ball bearings are vulnerable to tilting and axial loads. Therefore, it is important to set an appropriate balance. The rotating shaft of the electric refrigerant compressor adjusts the balance by changing the center of gravity of the four components. Two cases were tested for mass balance. The result was that the balance setting increased the lifespan from 800hr to more than 4000hr. The durability data of the improved electric refrigerant compressor requires further testing to the limit. After that, additional tests for mass balance in various stages are required.
전동식 냉매 압축기 배압실 O-ring 반력 작용점에 따른 성능 특성 분석
정재령(Jaeryeong Jeong),도민훈(Minhun Do),이지원(Jiwon Lee),강지훈(Jihoon Kang),임종학(Jonghak Lim),이호성(Hoseong Lee),김명현(Meonghyun Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
The purpose of this study is to analyze the performance characteristics of the electric refrigerant compressor according to the position of the rubber O-ring reaction point in the back pressure chamber. The evaluation was conducted under basic cooling performance conditions using a 45cc electric refrigerant compressor product. The back pressure structure of the compressor is important because it has a close effect on performance and is a means to control the clearance between scrolls. In this study, performance evaluation was conducted by dividing the inner diameter of the rubber O-ring, one of the means to control this back pressure structure, into three sizes according to the inner diameter of the PTFE seal. As a result, when the inner diameter size of the rubber O-ring was smaller than the inner diameter of the PTFE seal, good performance results were shown. In future research, it is necessary to analyze noise and vibration characteristics through NVH tests. In addition, not only the internal diameter dimension of the rubber O-ring, but also performance evaluation and NVH and durability test based on thickness, compression rate, filling rate, material, etc. are expected to be necessary.