Influence of piston displacement profiles on the performance of a novel dual piston linear compressor

Wei, Yidi; Zuo, Zhengxing; Jia, Boru; Feng, Huihua; Liang, Kun

doi:10.1016/j.ijrefrig.2020.03.032

Cited by 19 publications

(4 citation statements)

References 19 publications

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“…for the production of pistons and cylinders. The most popular silumins are AK7, AK12 and AK20 [9][10][11][12]14,15].…”

Section: Materials Used For Pistonsmentioning

confidence: 99%

Characteristics of the Seizure Processof Air Compressor Pistons of Automotive Vehicles

CEBULSKA,

HADRYŚ

2023

METAL Conference Proeedings

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The subject of the investigations are cast pistons used in air compressors. The goal of this work was characterization of the wear of pistons made by aluminium-silicon alloys and showed differences in material characterisation for different aluminium-silicon alloy. A few kinds of pistons were chosen for investigationspistons made by an aluminium-silicon alloy AK12 and AK7. The scope of the work included the observation of pistons using light microscopy and scanning electron microscopy with X-ray microanalysis of chemical composition (EDS -energy dispersion spectrometer). Next the measurements of hardness were carrying out with the Vickers method. The research shows that the wear resistance increases depending on the amount of silicon. Microscopic examinations confirmed the presence of chemical elements which are part of the castings of AK12 and AK7 alloys.

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“…for the production of pistons and cylinders. The most popular silumins are AK7, AK12 and AK20 [9][10][11][12]14,15].…”

Section: Materials Used For Pistonsmentioning

confidence: 99%

Characteristics of the Seizure Processof Air Compressor Pistons of Automotive Vehicles

CEBULSKA,

HADRYŚ

2023

METAL Conference Proeedings

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“…6 It can be expected that by controlling the eccentricity of the piston, the labyrinth sealing clearance could be reduced and volumetric efficiency of the LPC could be improved. [9][10][11] How to reduce the piston eccentricity and maintain the concentricity between the piston and cylinder has always been a difficult topic in LPC technology research.…”

Section: Introductionmentioning

confidence: 99%

Research on precise control of piston eccentricity by electromagnetic levitation in labyrinth piston compressor

Zhang

Pan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The piston in the Labyrinth piston compressor (LPC) usually runs eccentrically in the cylinder, which results in large internal leakage and low volumetric efficiency. An active electromagnetic control method based on the electromagnetic levitation theory was proposed in this paper to control the piston eccentricity, and a triple close-loop multi-factor coupled feedback control strategy composed of a current loop, a velocity loop, and a displacement loop was designed to realize the levitation control of the piston. The experimental research shows that there is serious piston eccentricity in the LPC, and the piston eccentricity is positively correlated with the increase of compressor pressure ratio and speed. By adopting the active electromagnetic control system proposed in this paper, the piston eccentricity is significantly reduced, and the maximum reduction is over 88%. Further research shows that the volume flow rate and volumetric efficiency of the LPC with control are maximum improved by about 45.6% and 44%, respectively. In conclusion, the piston eccentricity in the LPC could be effectively reduced by adopting the active electromagnetic control method proposed in this paper, thus improving its performance.

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“…An outsized amount of energy is consumed by the compressors within the refrigerators. A high-performance compressor will save a significant amount of energy (Chen et al, 2020;Zhang et al, 2020;Wei et al, 2020;Xue et al, 2018;Xu et al, 2020;Park et al, 2017;Zou and Cheng, 2019;Sandhya and Rao, 2016;Zhang et al, 2013;Redlich et al, 1996). A piston in conventional reciprocating pumps or compressors typically involves both rotary as well as linear motions.…”

Section: Introductionmentioning

confidence: 99%

Review of moving magnet linear oscillating actuators for linear compressor application

Khalid

Khan

Ullah

et al. 2022

WJE

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Purpose This paper aims to provide an overview of the recent developments and new topologies of single-phase moving magnet linear oscillating actuators (MMLOAs). The key advantage of the MMLOA when compared with conventional LOA is the absence of screws, gears and crankshaft mechanism, which results in fewer mechanical parts, simple structure, easy fabrication, lower noise levels and negligible frictional losses. Design/methodology/approach The review included papers up to August 2021. The structural designs of alternative topologies are deliberated in detail, and their relative merits and demerits are evaluated. Specific design issues, including pole and tooth number combinations, stroke length, magnet pole ratio and split ratio, are investigated. The imperative phenomena of the resonance, as well as the adjustable stroke, are also discussed in detail. Findings The electromagnetic performance in terms of thrust force of selected MMLOA topologies is compared. It is observed that the MMLOA with flux bridge topology has the highest thrust force of 365 N because of the large volume of the permanent magnets (PMs) used, which consequently increased the mass of the mover but based on overall performance analysis, single-phase end ferromagnetic Halbach surface-mounted PM LOA has the highest efficiency around 92%. Originality/value This review provides a comparative analysis for different tubular MMLOA topologies based on design construction and their electromagnetic performances.

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Influence of piston displacement profiles on the performance of a novel dual piston linear compressor

Cited by 19 publications

References 19 publications

Characteristics of the Seizure Processof Air Compressor Pistons of Automotive Vehicles

Characteristics of the Seizure Processof Air Compressor Pistons of Automotive Vehicles

Research on precise control of piston eccentricity by electromagnetic levitation in labyrinth piston compressor

Review of moving magnet linear oscillating actuators for linear compressor application

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