Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors
On the opening delay of a discharge reed valve for compressors caused by the oil film in the clearance between the reed and the valve seat, effects of design conditions on the opening delay are analyzed through the experiment and the numerical simulation. Investigated are three kinds of conditions,...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Japanese |
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The Japan Society of Mechanical Engineers
2014-04-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/80/812/80_2014fe0091/_pdf/-char/en |
| _version_ | 1811225132735135744 |
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| author | Fumitaka YOSHIZUMI Takahiro MOROI Shinji TAMANO Yohei MORINISHI |
| author_facet | Fumitaka YOSHIZUMI Takahiro MOROI Shinji TAMANO Yohei MORINISHI |
| author_sort | Fumitaka YOSHIZUMI |
| collection | DOAJ |
| description | On the opening delay of a discharge reed valve for compressors caused by the oil film in the clearance between the reed and the valve seat, effects of design conditions on the opening delay are analyzed through the experiment and the numerical simulation. Investigated are three kinds of conditions, the time rate of the bore pressure (compression speed), the oil viscosity, and the thickness of the reed. The experiment shows that the over-compression by the delay increases with increasing each of three condition values. The simulation reproduces qualitatively the effect of the bore pressure rate on the delay. The smaller bore pressure rate makes, under a certain bore pressure, the larger film thickness or the larger cavitation bubble diameter that results in the oil film rupture and the valve opening under the smaller bore pressure. The simulation also reproduces qualitatively the effect of the reed thickness. The larger reed thickness with the larger bending rigidity leads to the smaller reed deformation, the smaller oil film thickness, and the longer delay. On the oil film viscosity, the simulation fails in reproducing the change in the delay. The fail is due to the change in the oil film thickness of the simulation being smaller than that of the experiment. The experiment and simulation results indicate that, on all three conditions, the change in the increase of the oil film thickness leads to the change in the valve opening time and thereby the over-compression. |
| first_indexed | 2024-04-12T09:01:46Z |
| format | Article |
| id | doaj.art-9d812dfe0fa644128ba735920d071609 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-12T09:01:46Z |
| publishDate | 2014-04-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-9d812dfe0fa644128ba735920d0716092022-12-22T03:39:13ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612014-04-0180812FE0091FE009110.1299/transjsme.2014fe0091transjsmeEffects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressorsFumitaka YOSHIZUMI0Takahiro MOROIShinji TAMANOYohei MORINISHIToyota Central R&D LABS., INC.On the opening delay of a discharge reed valve for compressors caused by the oil film in the clearance between the reed and the valve seat, effects of design conditions on the opening delay are analyzed through the experiment and the numerical simulation. Investigated are three kinds of conditions, the time rate of the bore pressure (compression speed), the oil viscosity, and the thickness of the reed. The experiment shows that the over-compression by the delay increases with increasing each of three condition values. The simulation reproduces qualitatively the effect of the bore pressure rate on the delay. The smaller bore pressure rate makes, under a certain bore pressure, the larger film thickness or the larger cavitation bubble diameter that results in the oil film rupture and the valve opening under the smaller bore pressure. The simulation also reproduces qualitatively the effect of the reed thickness. The larger reed thickness with the larger bending rigidity leads to the smaller reed deformation, the smaller oil film thickness, and the longer delay. On the oil film viscosity, the simulation fails in reproducing the change in the delay. The fail is due to the change in the oil film thickness of the simulation being smaller than that of the experiment. The experiment and simulation results indicate that, on all three conditions, the change in the increase of the oil film thickness leads to the change in the valve opening time and thereby the over-compression.https://www.jstage.jst.go.jp/article/transjsme/80/812/80_2014fe0091/_pdf/-char/encompressorvalvecavitationopening delaycompression speedoil viscostityelastic rigidity |
| spellingShingle | Fumitaka YOSHIZUMI Takahiro MOROI Shinji TAMANO Yohei MORINISHI Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors Nihon Kikai Gakkai ronbunshu compressor valve cavitation opening delay compression speed oil viscostity elastic rigidity |
| title | Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| title_full | Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| title_fullStr | Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| title_full_unstemmed | Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| title_short | Effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| title_sort | effects of operating conditions and the reed rigidity on the opening delay of a discharge reed valve in compressors |
| topic | compressor valve cavitation opening delay compression speed oil viscostity elastic rigidity |
| url | https://www.jstage.jst.go.jp/article/transjsme/80/812/80_2014fe0091/_pdf/-char/en |
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