AIR BUBBLE CONTENT REGULATING SYSTEM

To regulate an air bubble content in a liquid.SOLUTION: An air bubble content regulating system 100 comprises: a circulation passage 10 for circulating a hydraulic fluid between a tank 20 and a hydraulic pump 30; an air bubble removal device 40 which removes air bubbles in the hydraulic oil; an air bubble mixing device 60 which causes the hydraulic oil to contain air bubbles; a measuring apparatus 70 which measures air bubble content in the hydraulic oil; and a controller. The circulation passage 10 has: a lead-out passage 13 which guides the hydraulic oil from which air bubbles have been removed by the air bubble removal device 40; and a discharge passage 14 which discharges air bubbles removed by the air bubble removal device 40. The air bubble removal device 40 has a first control valve 50 provided in the lead-out passage 13, and a second control valve 55 provided in the discharge passage 14. The controller controls operation of the first control valve 50, the second control valve 55, and the air bubble mixing device 60 on the basis of a measurement result of the measuring apparatus 70.SELECTED DRAWING: Figure 1 【課題】液体中の気泡含有量を調整する。【解決手段】気泡含有量調整システム１００は、タンク２０と油圧ポンプ３０との間で作動油を循環させる循環通路１０と、作動油中の気泡を除去する気泡除去装置４０と、作動油に気泡を含有させる気泡混入装置６０と、作動油の気泡の含有量を測定する測定装置７０と、コントローラと、を備え、循環通路１０は、気泡除去装置４０によって気泡が除去された作動油を導く導出通路１３と、気泡除去装置４０によって除去される気泡を排出する排出通路１４と、を有し、気泡除去装置４０は、導出通路１３に設けられる第１制御弁５０と、排出通路１４に設けられる第２制御弁５５と、を有し、コントローラは、測定装置７０の測定結果に基づき、第１制御弁５０、第２制御弁５５、及び気泡混入装置６０の作動を制御する。【選択図】図１