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고압측 오일 회수 기술을 적용한 고압식 Scroll 압축기 개발
김철환(Cheolhwan Kim),최세헌(Seheon Choi),조양희(Yanghee Cho),이병철(Byeongchul Lee) 대한설비공학회 2010 대한설비공학회 학술발표대회논문집 Vol.2010 No.6
Recently building energy saving has been becoming one of big attentions due to global warming among EU, US and other industrial countries. As one of these building energy saving strategies, LG Electronics has developed the high efficiency high-side shell (HSS) scroll compressor for a Building Multi Air-conditioning Systems (VRF: Variable Refrigerant Flow system), which are commonly used in Asia and Europe. For high efficiency in VRF system, new oil return mechanism is developed. As the bypass loss caused by an existing oil return to low pressure side is eliminated through newly developed oil return mechanism, which is the world first structure, the system efficiency has been improved by 15% in part load condition and 5∼7% in rated cooling/heating conditions. Accordingly, these novel mechanisms can reduce annual building HVAC energy drastically. In addition, by employing a vapor injection structure the heating capacity in cold climate (-15℃) has been increased by 27% and the system efficiency has been improved by over 10%. This paper presents not only the novel oil return mechanism but the new structure of LG Electronics' HSS scroll compressor including the high efficiency brushless DC motor.
안성용(Sungyong Ahn),오준철(Junchul OH),박정훈(Junghoon Park),최세헌(Seheon Choi),이병철(Byeongchul Lee),조현웅(Hyunwoong Cho),김정훈(Jeonghun Kim) 대한설비공학회 2016 대한설비공학회 학술발표대회논문집 Vol.2016 No.6
High-Side Shell(HSS) scroll compressors have been widely used for Variable Refrigerant Flow(VRF) system which is a powerful solution for the cooling and heating of commercial buildings. In order to improve the characteristics of the VRF system, a new HSS scroll compressor has been developed with a novel bearing structure. The core elements of the novel bearing structure are an outer-type bush bearing of an orbiting scroll and a female-type eccentric journal inside a shaft. The outer-type bush bearing is made of engineering plastic without a steel layer. The new HSS scroll compressor employing the novel bearing structure has a compact size, high efficiency, and low noise level compared to a conventional HSS scroll compressor. In order to confirm the advantages of the new HSS scroll compressor, basic tests and theoretical analysis have been performed in this study.