FLUID CIRCULATION DEVICE

• Main Authors: YOSHIDA MASAZUMI, SASAKI RYUSUKE, TAKAGI NOBORU, TANAKA HIROKAZU, AOYAGI TAKAHIKO
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2021
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COOLING OF INTERNAL-COMBUSTION ENGINES; COOLING OF MACHINES OR ENGINES IN GENERAL; DEVICES FOR VENTING OR AERATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

To provide a fluid circulation device capable of suppressing the waste consumption of a current in an on-off valve where a valve element is held at a closed position by supplying the current.SOLUTION: The fluid circulation device includes a pump 1, circulation flow paths L1, L2 where fluid delivered from the pump 1 is circulated, on-off valves V1, V2 for freely opening/closing the circulation flow paths L1, L2, respectively, and a valve control device for controlling the on-off valves, the on-off valves V1, V2 each including a valve element on which the pressure of fluid flowing in each of the circulation flow paths L1, L2 works in the opening direction, and a solenoid for holding the valve element at a closed position with magnetic force by supplying a current. The valve control device reduces a current to be supplied to the solenoid after the valve element is shifted to the closed position by supplying the current to the solenoid.SELECTED DRAWING: Figure 1 【課題】電流供給により閉塞位置に弁体が維持される開閉弁での電流の無駄な消費を抑制できる流体循環装置を構成する。【解決手段】ポンプ１と、ポンプ１から送り出された流体を循環させる循環流路Ｌ１，Ｌ２と、循環流路Ｌ１，Ｌ２の開閉が自在な開閉弁Ｖ１，Ｖ２と、開閉弁Ｖを制御する弁制御装置と、を備え、開閉弁Ｖ１，Ｖ２が、循環流路Ｌ１，Ｌ２に流れる流体の圧力が開放方向に作用する弁体と、電流供給により磁力で弁体を閉塞位置に維持するソレノイドとを備えて構成され、弁制御装置は、ソレノイドへの電流供給により弁体が閉塞位置に移行した後に、ソレノイドに供給する電流を低減する。【選択図】図１