| Title |
A Study on The Design of a Back Pressure Control Valve for Scroll Compressors |
| Authors |
Seong Hyun Jeon ; Young Joo KIm ; Byung il Jeun ; Sam Won Seo ; Jeo ng Taek Lim ; Hyun Jin Kim |
| DOI |
https://doi.org/10.6110/KJACR.2024.36.4.196 |
| Keywords |
배압 조절 밸브; 누설 손실; 운전압력비; 스크롤 압축기 Back pressure control valve; Leakage loss; Operating pressure ratio; Scroll compressor |
| Abstract |
This paper discusses the design of a pressure control valve that generates an appropriate back pressure in a back pressure chamber of a scroll compressor. Its performance is verified through performance analysis. The back pressure coefficient, which is defined as the ratio of difference between discharge pressure and back pressure to difference between back pressure and suction pressure, can be created using the piston area ratio of the designed pressure control valve. By selecting an appropriate value of the back-pressure coefficient obtained in this manner, a back pressure that closely approximates the optimal back pressure, which varies depending on the operating conditions across a wide range of operating pressure ratios, can be achieved. Additionally, leakage loss in this valve is significantly smaller than that in conventional back-pressure types that use a back pressure hole, making it particularly suitable for CO2 scroll compressors. |