CO2スクロール圧縮機における旋回スクロール運動安定性の向上検討(FP4 省エネルギー・小型分散・コジェネ技術)

概要

論文の詳細を見る
Recently, the natural refrigerants, particularly carbon dioxide have been attracting attention, and now the water heaters that adopt the CO2 heat pump systems are mass-produced in Japanese market. Our CO2 heat pump water heater system adopts the scroll type compressor, which has the high-pressure vessel and back-pressure mechanism. However, the orbiting scroll is separated from the fixed scroll at the low compression ratio conditions. The so-called "overturning" causes the decrease of the volumetric efficiency. In this report, we investigated the characteristics of the overturning, especially focusing on the quality in the suction. We developed the new groove on the thrust bearing to control the overturning, which realizes the high efficiency in the low compression ratio and keep the high reliability in the sliding parts.
社団法人日本機械学会の論文
2004-06-22