Rotary vane compressor having lubricant passageway.

摘要

A vane slot (20) and lubricating oil passageway (21) in the cylinder member (3) of a rotary vane compressor are configured such that the radial length of the slot wall (20a) on the low pressure side of the vane (5) is less than that of the opposite wall (20b) on the high pressure side. Such a shortened low pressure side slot wall reduces wear by providing improved lubrication at the critical inward edge of the slot (F1), and facilitates the flushing away of abrasive particles formed during the initial seating of the vane. For a horizontal installation, the lubricating oil level is maintained below the radially outermost edge of the wall (20a) to prevent the oil from being drawn into the low pressure chamber (17) when the compressor is stopped.