| 摘要 |
PURPOSE:To obtain the added pressure through all combinations of 1-n units of pressure controllers, by combining n units of pressure controllers having different set values. CONSTITUTION:The pressure is previously set through pressure setting parts R1'- Rn for pressure controllers R1-Rn, and a new set pressure is obtained with the addition of the fluid pressure given from other parts. Electromagnetic control valves V1-Vn control the pass and cut-off of the fluid that is flowed from each pressure control. At the same time, electromagnetic control valves SV1-SVn connect the output side piping of the electromagnetic control valve at the lower side to the output side piping of the electromagnetic control valve at that position when these valves SV1-SVn are off; while the output side piping of the electromagnetic control valve at the lower side is connected to the pressure setting part of the pressure controller at that position when the valves SV1-SVn are on respectively. In such a way, the added pressure can be obtained through all combinations of 1-n units of pressure controllers by combining the on and off of the electromagnetic direction control valves. |
