In order to respond to global necessities, such as the need for environmental protection and energy savings, we have succeeded in developing a high-performance scroll compressor for use in automotive air conditioners. The new compressor, which is compact and light in weight, has various advantages, such as high efficiency, high reliability, low noise and low vibration. The compressor uses HFC- 134a as its refrigerant. All of these advantages have been made possible by incorporating various technological innovations into our original scroll compressor. The new scroll compressor features a variable rotation-radius mechanism yielding an excellent sealing performance, an Oldham coupling and a thrust slide bearing realizing low noise, low vibration and low cost compared with a ball coupling type scroll compressor, and an original shape of the scroll vane resulting in high strength and high efficiency. These technological innovations contributed to a considerably higher performance of the developed scroll compressor. Especially, the variable rotation-radius mechanism, owing to a newly developed mechanism, has a simple structure with high rigidity.
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