cooling; oil-free; scroll compressor; sealing; structure; water
Abstract :
[en] Traditionally, scroll compressors are mainly made of metallic parts and oil is used to lubricate the friction surfaces and reduce discharge temperature and leakage. But for the food processing, medical systems, textile manufacturing, fuel cell system, and other super-clean fields, the oil-less operation is critical. The oil is strictly forbidden in the working chambers of the scroll compressor in order to get the oil-free compressed air. So it is very important to develop the oil-free scroll compressor (OFSC). In this paper, the working principle and structure characteristics of the OFSC are investigated. Some of research works and the recent patents in this area are described and analyzed in detail, especially the water injection and air cooling OFSC. The future development on an OFSC is also presented. The analysis results demonstrated that there is dramatic growth potential in OFSC field.
Disciplines :
Mechanical engineering
Author, co-author :
Bin, Peng; Lanzhou University of Technology > School of Mechanical and Electronical Engineering
Legros, Arnaud
Lemort, Vincent ; Université de Liège > Département d'aérospatiale et mécanique > Systèmes énergétiques
Xiaozheng, Xie; Lanzhou University of Technology > School of Mechanical and Electronical Engineering
Haifeng, Gong; Chongqing University of Technology > College of Mechanical Engineering
Liu Z-Q. The scroll type fluid machinery and scroll compressor. China Machine Press: Beijing, 2009.
Creux, L. Rotary engine. US801182 (1905).
Chang Y-C. Family design of scroll compressors with optimization. PhD thesis, National Chiao Tung University, Tai Wan, 2007.
http://www. freepatentsonline. com/(Accessed on: October 25, 2015).
Lai C-F, Huang A, Liang K-I. The development of oil-less scroll compressors used for fuel cells. The 4th International Conference on Compressor and Refrigeration (ICCR). Xi'an Jiaotong University, Xi'an, P. R. China, October, 2003: 241-249.
Zhao Y, Li L, Jiang S, Wei Z, Shu P. Research on OFSC with high speed in 30kW fuel cell. Appl Therm Eng 2003; 23(5): 593-603.
Zhao Y, Li L, Wu H, Shu P. theoretical and experimental studies of water-injection scroll compressor in automotive fuel cell systems. Energ Convers Manage 2005; 46(9-10): 1379-92.
Wang L, Zhao Y, Li L, Bu G, Shu P. Research on oil-free hermetic refrigeration scroll compressor. P I Mech Eng A-J Pow 2007; 221(7): 1049-56.
Yanagisawa T, Fukuta M, Ogi Y. Performance of an oil-free scrolltype air compressor. Proc. of the ImechE Conf. Trans. on Compressors and their Systems. London, UK, 1999: 279-287.
Yanagisawa T, Fukuta M, Ogi Y, Hikichi T. Performance of an oilfree scroll-type air expander. Proc. of the ImechE Conf. Trans. on Compressors and their Systems. London, UK, 2001: 167-174.
Aoun B, Clodic DF. Theoretical and Experimental study of an oilfree scroll vapor expander. Proceedings of International Compressor Engineering Conference. Indiana, USA, 2008; 1188: 1-8.
Lemort V, Quoilin S. Designing scroll expanders for use in heat recovery rankine cycles. Proc. of the ImechE Conf. Trans. on Compressors and their Systems. London, UK, 2009: 3-12.
Shaffer BR, Groll EA. Performance of the use of plastics in oil-free scroll compressors. Proceedings of International Compressor Engineering Conference. Indiana, USA, 2012; 1267: 1-9.
Shigeru, M., Masahiro, Y., Toshio, K. Oil-free scroll fluid machine with projecting orbiting bearing boss. US5098265 (1992).
Seiichi, Y. Scroll type fluid machine having first and second bearings for the driving shaft. US5649817 (1997).
Shuji, H., Masatomo, T., Takashi, S. Scroll-type fluid machinery with seals for the discharge port and wraps. US5258046 (1993).
Toshihiro, H. Two stage scroll compressor. EP0863313 (1998).
Shuji, H., Masaru, T. Oil-free two stage scroll vacuum pump and method for controlling the same pump. US5961297 (1999).
Christian, H., Wilfried, Z., Robert, F. Spiral compressor, useful in particular to generate compressed air for rail vehicles. US6062833 (2000).
Kazuaki, S., Isamu, K., Natsuki, K., Akira, S., Tatsuo, N., Muneo, M., Shigeru, M. Scroll compressor and method of manufacturing same. US6142755 (2000).
Hirokatsu, K., Hirotaka, K., Kazuaki, S., Toshiaki, Y. Oil-free scroll compressor. US20100158733 (2010) & US8202057 (2012).
Hirotaka, K., Kazuaki, S., Natsuki, K., Hirokatsu, K. Waterinjection type scroll air compressor. US20110129362 (2011) & US8585376 (2013).
Kazuaki, S., Natsuki, K., Hirotaka, K. Water injected scroll air compressor. US8721308 (2014).
Natsuki, K., Kazuaki, S., Hirotaka, K., Masakazu, A. Water injected scroll air compressor. US9145892 (2015).
Kosuke, S., Kiminori, I., Yoshio, K. Scroll fluid machine with cooling fan and passage. US9115719 (2015).
Toshikazu, H. Scroll type fluid machine. EP2881586 (2015) & US20150152863 (2015).
Shimao, N. Scroll-type fluid displacement apparatus with fully compliant floating scrolls. US20070172373 (2007).
Zhenmin, H. Oil-free air condition scroll compressor. CN1828189 (2006).
