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建立了一个能测定制冷往复式压缩机气阀阀片升力以及阀座(或阀升程限制器)与阀片之间油粘着力的试验台,把所得之数据输入到压缩机及气阀性能预测的计算机程序,将结果与纯数学模型预测的性能加以比较,结论是:1.在数学模型中取阀片升力系数c=0.6,就能以理论计算公式所得的气体力=c×阀腔与气缸压差×阀片表面积来代替所测真实气体力;2.由于油的粘着而引起的阀片延迟离开阀座或阀升程限制器,这对压缩机及气阀性能有重大影响。
A test rig capable of determining the lift of the valve plate of a refrigerant reciprocating compressor and the adhesion of the valve seat (or valve lift limiter) to the valve plate was established and the resulting data was entered into the compressor and valve performance The predicted computer program compares the results with those predicted by the pure mathematical model. The conclusions are: 1. Taking the lift coefficient c = 0.6 of the valve in the mathematical model, the gas force obtained from the theoretical calculation formula can be calculated as c × valve chamber And the cylinder pressure × valve surface area to replace the measured true gas force; 2 due to the adhesion of the valve caused by the delay valve seat or valve lift limiter, which has a significant impact on compressor and valve performance.