Experimental study on the output characteristics of valved linear compressor with intermittently connecting compression chamber and back chamber

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-02-01 DOI:10.1016/j.ijrefrig.2024.12.006

Lei Ding , Xinquan Sha , Ran Hu , Shaoshuai Liu , Zhenhua Jiang , Yinong Wu

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引用次数: 0

Abstract

Piston offset will affect the output characteristics of valved linear compressors. It will lead to reduced effective piston stroke and increase the risk of cylinder collision. In order to suppress the piston offset, the compression chamber and the back chamber are intermittently connected by a external bypass pipe, and the connection time is controlled by a solenoid valve. The effect of solenoid valve operating frequency on the offset value and compressor output characteristics was studied. The results show that the piston offset can be effectively suppressed when the bypass pipe is connected at high frequency (≥1 Hz). Meanwhile, the effective stroke is increased by about 1.49 mm, the pressure ratio is increased by 10.7 %, and the mass flow rate is increased by 14.2 %. Moreover, the suppression effect of piston offset remains basically unchanged when the operating frequency of the solenoid valve exceeds 1 Hz. Another interesting result is that the higher the frequency of the solenoid valve operation, the smaller the fluctuation caused by this method. This research provides a basis for machining the anti-offset hole in the piston instead of the external bypass pipe to suppress the offset.

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.