| 摘要 |
PROBLEM TO BE SOLVED: To supply a coolant of comparatively high pressure at a comparatively low discharge. SOLUTION: This coolant feeder 100 is provided with a coolant reserve tank 22 for storing the coolant; a first booster pump 1 taking the coolant from the reserve tank 22 temporarily into a first pressure chamber 12 to pressurize the coolant and then discharging the coolant; and a second booster pump 2 taking the coolant from the reserve tank temporarily into a second pressure chamber 13 to pressurize the coolant and then discharging the coolant. A first piston 8a of the first booster pump and a second piston 9a of the second booster pump are alternately driven to supply the coolant from the first and second pressure chambers. The coolant in the reserve tank is preferably taken into the respective pressure chambers of the booster pumps corresponding to the driving timing of the first and second pistons of the first and second booster pumps. COPYRIGHT: (C)2006,JPO&NCIPI
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