CAJ | 학술논문

不同气动膨胀机与直线压缩机适配过程中必然带来的两个动力学问题是:膨胀机固有频率、运动阻尼的改变.针对这两个因素对制冷机制冷性能的影响进行了试验研究(充气压力为1.8MPa).试验表明:膨胀机固有频率、运动阻尼对直线压缩机的共振频率的影响较小,可忽略不计;存在一个最佳激力比(即激励力与膨胀机固有频率之比,约为0.7)使得制冷机制冷性能最佳,此比值在一定范围内受膨胀机运动阻尼的影响:最佳激力比随膨胀机运动阻尼的增大而减小.
불동기동팽창궤여직선압축궤괄배과정중필연대래적량개동역학문제시:팽창궤고유빈솔、운동조니적개변.침대저량개인소대제랭궤제랭성능적영향진행료시험연구(충기압력위1.8MPa).시험표명:팽창궤고유빈솔、운동조니대직선압축궤적공진빈솔적영향교소,가홀략불계;존재일개최가격력비(즉격려력여팽창궤고유빈솔지비,약위0.7)사득제랭궤제랭성능최가,차비치재일정범위내수팽창궤운동조니적영향:최가격력비수팽창궤운동조니적증대이감소.
Changes of two dynamical factors would be induced when Matching Pneumatic Expander to the Linear Compressor,those are displacer's natural frequency and motion damp.Experimental Study about the influence of the two dynamical factors on the cooling performance was made(the charging pressure is 1.8MPa).Some conclusions were acquired:compressor's resonant frequency was slightly affected by the displacer's natural frequency and motion damp,so the effect could be ignored.The optimum ratio value of the operating frequency to the displacer's natural frequency is about 0.7.Further more,the optimum ratio value reduces with the increment of the motion damp.