Patent ID: 7871461

Claim:
A bubble separator for removing bubbles included in a fluid, comprising: a centrifugal bubble separating mechanism; and an auxiliary bubble separating mechanism further provided on one of a downstream side and an upstream side of said centrifugal bubble separating mechanism, wherein said centrifugal bubble separating mechanism includes a first bubble separator body; a first fluid introducing part that is provided in said first bubble separator body, and introduces fluid mixed with bubbles inside said first bubble separator body in the tangential direction; a first fluid discharging part that is provided in said first bubble separator body, and discharges fluid separated by swirling; and a first gas discharging part that is provided in said first bubble separator body, and discharges bubbles separated by swirling, and said auxiliary bubble separating mechanism includes a second bubble separator body that is provided adjacent to said first bubble separator body, and has a guiding portion for changing the flow direction of introduced fluid; a second fluid introducing part that is provided in said second bubble separator body, and introduces said fluid; a second fluid discharging part that is provided in said second bubble separator body, and discharges separated fluid; and a second gas discharging part that is provided in said second bubble separator body, and discharges separated bubbles.