To open a valve body against pressure even when an output of an actuator is small.SOLUTION: A fluid control valve 50 comprises: a partitioning 520 arranged between a high-pressure side and a low-pressure side of a fluid flow passage; a first opening 521 formed in the partition; a second opening 522 formed in the partition at a position different from the first opening; a first valve body 530 which is arranged at the high-pressure side of the partition and opens and closes the first opening; a second valve body 540 which is arranged at the low-pressure side of the partition, and opens and closes the second opening; a connecting part 550 which connects the first valve body and the second valve body, and opens and closes the valve bodies in conjunction with each other such that an opening/closing state of the second valve body is the same as an opening/closing state of the first valve body; and an actuator which is connected to the connecting part and drives the opening/closing of the first valve body and the second valve body. The first valve body and the second valve are set such that a first force by which the first valve body closes the first opening is larger than a second force by which the second valve body opens the second opening when both the first valve body and the second valve body are in closed states.SELECTED DRAWING: Figure 2
【課題】アクチュエータの出力が小さくても、圧力に対抗して弁体を開ける。【解決手段】流体制御弁50は、前記流体流路の前記高圧側と前記低圧側との間に設けられた仕切520と、仕切に設けられた第1開口521と、仕切において、第1開口と異なる位置に設けられた第2開口522と、仕切の高圧側に配置され第1開口を開閉する第1弁体530と、仕切の低圧側に配置され第2開口を開閉する第2弁体540と、第1弁体と第2弁体とを接続し、第2弁体の開閉状態が第1弁体の開閉状態と同じになるように連動して開閉させる接続部550と、接続部に接続され、第1弁体と前記第2弁体の開閉を駆動するアクチュエータと、を備え、第1弁体、第2弁体は、第1弁体と第2弁体とがいずれも閉状態のとき、第1弁体が第1開口を閉じる第1の力が、第2弁体が第2開口を開ける第2の力よりも大きくなるように設定されている。【選択図】図2
FLUID CONTROL VALVE
流体制御弁
2023-07-26
Patent
Elektronische Ressource
Japanisch
VALVE CONTROL DEVICE, FLUID-PRESSURE CONTROL DEVICE, AND VALVE CONTROL METHOD
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