Patent ID: 7655078

Claim:
A bubble separator that is a centrifugal separation type for eliminating bubbles included in oil used by a lubrication system for an internal combustion engine, the bubble separator comprising: a body with a generally cylindrical shape; an oil induction portion that is provided on said body, and introduces bubble-containing oil to inside said body; a gas discharge portion with a generally cylindrical shape that is provided extending from a ceiling portion of said body, and discharges separated bubbles to outside said body; an oil discharge portion that is provided on said body, and discharges separated oil to outside said body; and an upper partition that is provided extending from said ceiling portion, and is formed on a periphery of said gas discharge portion, a lower end of said upper partition is positioned below a lower end of said oil induction portion and a lower end of said gas discharge portion is positioned below said lower end of said upper partition.