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The study on the quality characteristics factor of medium-sized orbit scroll

중형 선회 스크롤의 품질 특성 인자에 대한 연구

  • Received : 2016.06.24
  • Accepted : 2016.09.09
  • Published : 2016.09.30

Abstract

The use of the scroll compressor in the air conditioning of medium-sized vehicles has increased because of its low torque fluctuation, high energy efficiency and low noise. In addition, the main components of the compressor have been changed from steel to aluminum to reduce its weight, following studies on the constituent materials. The processing precision of the fixed scroll and orbiting involute scroll wrap of the scroll compressor must be below $10{\mu}m$. To ensure this, the surface roughness and contour tolerance are measured. To improve the hardness of the orbiting scrolls using aluminum subjected to anodizing treatment and as the base material, we used a sealing treatment and measured the resulting characteristics. The aluminum materials were made of an Al-Mg-Cu based alloy including small amounts of Ni, Fe, and Zn. The surface roughness was less than $3{\mu}m$ and the processing accuracy was within $10{\mu}m$. Also, the hardness of the nanodiamonds with CNTs used in the sealing treatment was more than 450. This was found to improve the hardness of the material by 50% or more compared to the water sealing treatment and there was little difference between the use of carbon nanotubes and nanodiamonds as sealing materials.

중형 차량용 에어컨에 사용되는 스크롤 압축기는 토크변동이 적고 에너지 효율이 높으며, 소음이 적어 적용이 확대되어 가고 있다. 또한 경량화에 따라 압축기를 구성하는 주요부품이 스틸에서 알루미늄으로 변경하는 등 소재에 대한 연구가 활발히 이루어지고 있다. 또한 스크롤 압축기는 고정 스크롤과 선회 스크롤의 인벌루트 랩의 가공 정밀도가 $10{\mu}m$ 이하로 정밀도가 높은 전용장비와 전용 툴은 물론 숙련된 가공기술이 요구되므로 가공 품질을 확인하기 위하여 표면조도와 윤곽도를 측정하였으며, 알루미늄을 모재로하여 양극 산화 처리하여 사용되고 있는 선회스크롤의 경도를 향상시키기 위한 방법의 일환으로 봉공처리를 수행에 따른 특성들을 살펴보았다. 알루미늄 소재는 Al-Mg-Cu계 합금으로 미량의 Ni, Fe, Zn 이 부가된 것으로 나타났으며, 표면조도는 $3{\mu}m$이하로 가공 정밀도 기준 $10{\mu}m$를 만족하였다. 또한 양극산화 후 나노다이아몬드, CNT로 봉공처리 한 경우 경도는 450 이상으로 수봉공처리의 경우 보다 50% 이상 경도가 향상됨을 알 수 있었으며, 봉공재로 사용하기 위한 소재로서 탄소나노튜브나 나노다이아몬드는 큰 차이를 보이지 않았다.

Keywords

References

  1. L.Cruex, 1905, Rotary engine, USA Patent No 801182.
  2. Moor, R, W., Shaffer, R.W.,McCullough,J.E. ADL "A scroll compressor for shipboard helium liquefier system,' Proceedings of international Compressor Conference at Purdue, pp. 417-422, 1976. http://docs.lib.purdue.edu/icec/223/
  3. Tojo, K. et al, 1984, "A Scroll Compressor for Air Conditioner", Proceedings of International Compressor Conference at Perdue, pp. 496-503, 1984.
  4. G. H. Lee, " Scroll Compressors for Air-conditioner," International journal of fluid machinery and systems, Vol, 1, No. 1, pp. 121-128, 1998. http://www.ndsl.kr/ndslOrgViewer.co https://doi.org/10.5293/IJFMS.2008.1.1.121
  5. H. J. Kim, "Scroll compressor technology", International journal of fluid machinery and systems, Vol. 4, No. 3, pp. 96-105, 2001. http://www.ndsl.kr/ndslOrgViewer.co
  6. S. G. So, "scroll compressor", korea air cleaning association, Vol. 11, No. 7, pp. 59-66, 1994.
  7. T. J. Kim, "Dynamic Behaviour of a Radial Compliant Crank Mechanism Used in Scroll Compressor", Journal of KSTLE(1996), Vol. 12, No. 2, pp. 8-19, 1996. http://www.ndsl.kr/ndslOrgViewer.co
  8. J. K. Lee "Experimental Identification of Fluid Noise and Structure-Borne Noise in Hermetic Scroll Compressor", Journal of Mechanical Science and Technology, Vol24, No. 5, pp. 687-693, 2000. http://www.ndsl.kr/ndslOrgViewer.co
  9. S. Y. Kang, "Study on Improvement of Corrosion Resistance and Wear Resistance by Anodizing and Sealing Treatment with Nano-diamond Powder on aluminum", Journal of the Korean institute of surface engineering, Vol. 47, No. 3, pp. 121-127, 2014. http://www.newnonmun.com/article=10731060 https://doi.org/10.5695/JKISE.2014.47.3.121
  10. D. J. Ra, "Studies on the anodic oxidation of the high-efficiency aluminum", The Human Resources Development Institute, Local master, 2015.
  11. B. S. Jeong, "Friction Characteristics of the Tip Seal in a Scroll Compressor", Journal of the Korea Society of Tribologist and Lubrication Engineers, Vol. 30, No.6, pp. 370-377, 2014. http://www.riss.kr/search/detail/DetailView.do?p_mat_type=be54d9b8bc7cdb09&control_no=38642f86f0adeceeffe0bdc3ef48d419 DOI: http://dx.doi.org/10.9725/kstle.2014.30.6.370
  12. J. H. Lee, "The Mechanical Properties Evaluation of EV Brake Disk According to the Hard Anodizing Process", Chosun University, Local master, 2012. http://www.materic.or.kr/info/scholar/content.asp?s_code=JP&p_id=174095