Study on Bearing Characteristics of Compressor Considering Refrigerant Dissolution and Friction Heat
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- SASAKI Tatsuya
- Advanced Technology R&D Center, Mitsubishi Electric Corporation
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- IKEDA Yoshimi
- Advanced Technology R&D Center, Mitsubishi Electric Corporation
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- ISHIZONO Fumihiko
- Air Conditioning & Refrigeration Systems Works, Mitsubishi Electric Corporation
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- SATO Katsunori
- Itami Engineering Office, Mitsubishi Electric Engineering Company Limited
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- SASAKI Shinya
- Department of Mechanical Engineering, Faculty of Engineering, Tokyo University of Science
Bibliographic Information
- Other Title
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- 冷媒溶解と発熱を考慮した圧縮機の軸受特性に関する研究
- －1st Report: Analysis Modeling and Theory Construction
- ―第1報：解析モデルと理論構築―
Abstract
<p>There is a growing need for expanding the upper limit of the operating range of compressors for air-conditioning and refrigeration systems. We have two ways to design the upper limit expansion. One is expansion of the stroke volume, which increases the load of the sliding bearing as the compressive load of the refrigerant. The other is increasing maximum rotation speed, which increases the shear heat of the oil film, the viscosity of the refrigerant oil decreases, and the load capacity of the sliding bearing decreases. Incidentally, the refrigerant is dissolved in the refrigerant oil that lubricates the sliding bearing, and the solubility and the dissolving viscosity change depending on the temperature and pressure conditions. It cannot be ignored viscosity changing of refrigerant oil due to friction heat and refrigerant dissolve in high rotation speed and high load range. Therefore, we constructed a thermal fluid lubrication analysis model that captures changes in viscosity due to oil film temperature and solubility, and clarified the influence of frictional heat generation, solubility and viscosity change on sliding bearing characteristics.</p>
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 36 (2), 17-, 2019-06-30
Japan Society of Refrigerating and Air Conditioning Engineers
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Details 詳細情報について
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- CRID
- 1390003825194094592
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- NII Article ID
- 130007866612
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- ISSN
- 2185789X
- 13444905
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed