Scroll compressor having oil bores formed through the crank shaft

摘要

In a scroll compressor, a gas purge bore is formed to extend from an oil bore penetrating a drive shaft of the compressor, causing coolant gas to be expelled out with rising of lubricating oil sucked up by an oil pump through the oil bore. This allows the lubricating oil to rise without undergoing resistance of the coolant gas. By positioning the oil bore close to an oil groove formed in an eccentric bearing, the lubricating oil can be surely supplied to the oil groove.