Scroll compressor
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsToshiyuki Nakamura, Tsutomu Inaba, Tadashi Kimura
Life of this patent
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Abstract
A scroll compressor in which depletion of the lubricant supply is prevented both during the normal operation of the compressor and at the time the compressor is started. A motor cover having the form of a bottomed cylinder is provided around a driving motor of the compressor at a position so as to separate the path of suctioned gas which is used for cooling the driving motor from a lubricant return path through which lubricant from the lubricant pool formed at the bottom of the housing of the compressor is pumped to lubricate the bearing frame and returned to the lubricant pool. A check valve may be provided within the motor cover.
Claims12
In a scroll compressor of a type including a stationary scroll and a motor driven oscillating scroll, said stationary scroll and said oscillating scroll together forming a compression chamber, said oscillating scroll being orbited relative to said stationary scroll, wherein the improvement comprises means for maintaining substantially separate an operating gas and a lubricant of said compressor, said means comprising cover means for said motor, said cover means comprising a boundary between an operating gas flow path and a lubricant flow path, said operating gas flow path including a portion extending interiorally of said cover means.
Dependencies are inferred from the claim text.