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JP2008255796A Shaft seal device of oil-free rotary compressor 审中-公开
标题翻译：无油旋转压缩机轴封装置
公开(公告)号：JP2008255796A
公开(公告)日：2008-10-23
申请号：JP2007095581
申请日：2007-03-30
申请人： Anest Iwata Corp , アネスト岩田株式会社
发明人： KIMURA HIDEYUKI , SATO SHIGEMI , TAKEMOTO JUNICHI
IPC分类号： F04C27/00 , F04B39/00 , F04C18/18 , F16J15/54
CPC分类号： F04C27/009 , F04C18/123 , F04C2240/605 , F16J15/164 , F16J15/441
摘要： PROBLEM TO BE SOLVED: To provide a shaft seal device of an oil-free rotary compressor causing less leakage even if there is an up or down temperature change during operation and discharging a clean compressed gas by maintaining the optimum clearance between itself and a slidable contact part to minimize the compressed gas leaking from a seal part even if the temperatures of a shaft member, a carbon seal, and a holding member for holding the carbon seal are raised during the operation of the rotary compressor and preventing a lubricating oil from flowing into a compression chamber.
SOLUTION: This shaft seal device of an oil-free rotary compressor comprises a carbon ring 83 having an air seal 71 in slidable contact with the outer periphery of a rotor shaft sleeve 75 and an outer ring 85 fitted to the outer periphery of the carbon ring 83. The carbon ring 83 and the outer ring 85 are so fitted to each other by shrink fit that their interference is not zero at the maximum temperature when used. The outer ring 85 is formed of a material having the same coefficient of linear expansion as the rotor shaft sleeve 75.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供无油旋转式压缩机的轴封装置，即使在操作期间存在上升或下降的温度变化并且通过保持其自身与其之间的最佳间隙而排出清洁的压缩气体也会导致较少的泄漏即使在旋转式压缩机的操作期间轴部件，碳密封件和用于保持碳密封件的保持部件的温度升高并且防止润滑油也能够使从压缩部件泄漏的压缩气体最小化的滑动接触部件从流入压缩室。解决方案：无油旋转压缩机的轴封装置包括：碳环83，其具有与转子轴套75的外周滑动接触的空气密封件71;以及外环85，碳环83.碳环83和外环85通过紧密配合彼此相适应，使用时它们的最大温度下它们的干涉不为零。外圈85由具有与转子轴套75相同的线性膨胀系数的材料形成。版权所有（C）2009，JPO＆INPIT

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