Some Design Problems of Scroll Compressor

Morishita, Etsuo; Sato, Masahiro

doi:10.1299/jsme1958.29.4139

Cited by 9 publications

(4 citation statements)

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“…The scroll wall thickness, displacement and operating conditions were kept constant to nd the optimum scroll geometry in their studies. The evaluation of [82] showed that the overturning moment of the moving scroll limited the scroll height. The minimum scroll height was dependent on the weight and outer diameter of the moving scroll.…”

Section: Scroll Prole Height (H)mentioning

confidence: 99%

A review of scroll expander geometries and their performance

Emhardt

Tian

Chew

2018

Applied Thermal Engineering

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Section: Scroll Prole Height (H)mentioning

confidence: 99%

A review of scroll expander geometries and their performance

Emhardt

Tian

Chew

2018

Applied Thermal Engineering

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“…The gas forces developed within scroll chambers are well known to be axial, tangential, and radial [1,13]. Each force varies in magnitude as the moving scroll rotates through one revolution.…”

Section: Dynamical Model Of the Gas Forcesmentioning

confidence: 99%

“…Scroll compressors are widely used for compressing air or refrigerants in refrigerators and air conditioners. Scroll compressors have the advantage of higher efficiency and lower noise and vibration levels, and they are more reliable because of the smaller number of moving parts required for their operation compared with other types of compressors [1].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Top Scroll Profile Using Equidistant-Curve Approach for a Scroll Compressor

Liu

2015

Mathematical Problems in Engineering

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Scroll profile plays a key role in determining the performance of a scroll compressor. In this study geometric and dynamic characteristics of the scroll profile are analyzed to investigate the influence of its geometric continuity on property of a scroll compressor. Firstly, scroll profiles are created to redesign the geometry of scroll wrap by using the equidistant-curve approach on the basis of a generation line consisting of involute of circle and circular arc. Subsequently, the geometric and dynamic models of the scroll compressor are established. These models are related to parameters of the generation line of scroll profile and rotation angle of a moving scroll. Lastly, some simulation examples of second-order continuity (SOC) scroll profile are compared with first-order continuity (FOC) scroll profiles and some important conclusions are obtained. Results show that SOC scroll profile is superior to FOC profile in terms of volume ratio, stability of gas force, and possible leakage loss in a scroll compressor.

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“…Scroll compressors have been becoming popular in refrigeration and air conditioning products because of their high efficiency, low noise, fewer components, low vibration, light weight, and small size compared with other types of compressors [1][2][3][4][5]. The malfunctions or faults because of the damages of their key components, such as fixed and orbiting scrolls, during the operating process of scroll compressors may cause abnormal operation and, if not detected early, can cause emergency shutdown.…”

Section: Introductionmentioning

confidence: 99%

A Vibration Analysis Based on Wavelet Entropy Method of a Scroll Compressor

Liu

2015

Entropy

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Vibration-based condition monitoring and fault diagnosis is an effective approach to maintain the reliable operation of a scroll compressor. Unfortunately, the vibration signal from the scroll compressor always has characteristics of being non-linear and non-stationary, which makes vibration signal analysis and fault feature extraction very difficult. To extract the significant fault features, a vibration analysis method based on Wavelet entropy is proposed in this paper. Two forms of the wavelet entropy, namely the wavelet space feature spectrum entropy (WSFSE) and the wavelet energy spectrum entropy (WESE), are defined to depict instantaneous characteristics of the local variation of the vibration signal. Four types of mechanical faulty vibration signal, namely unbalanced rotor, malfunctioning scroll, loosened mechanical assembly, and loosened bearing, are analyzed by using the proposed approach. The experimental results show that feature components and energy distribution of each fault signal is accurately identified and revealed, which proves that the combined application of WSFSE and WESE approach is a successful scheme for the vibration analysis of scroll compressors.

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Some Design Problems of Scroll Compressor

Cited by 9 publications

References 0 publications

A review of scroll expander geometries and their performance

A review of scroll expander geometries and their performance

Modeling of Top Scroll Profile Using Equidistant-Curve Approach for a Scroll Compressor

A Vibration Analysis Based on Wavelet Entropy Method of a Scroll Compressor

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