Flow control valve

摘要

A flow control valve is disclosed that includes a valve body member having a seating surface that is seated on a valve seated surface. Multiple inflow orifices and multiple outflow orifices may be formed on the valve seated surface or the seating surface, and may be formed so as not to overlap each other in a state in which the seating surface is seated on the valve seated surface. An inside inflow channel that is in communication with the inflow channel and the inflow orifice may be formed inside a member where the inflow orifices are formed and an inside outflow channel that is in communication with the outflow channel and the outflow orifice is formed inside a member where the outflow orifices are formed.

主权项

1. A flow control valve that is arranged in a flow channel where fluid flows and that expels the fluid into an outflow channel as being a downstream flow channel by controlling a flow of the fluid from an inflow channel as being an upstream flow channel, comprising:
a valve seat member having a valve seated surface; and a valve body member having a seating surface that is seated on the valve seated surface; wherein multiple inflow orifices are provided on the valve seated surface and multiple outflow orifices are formed on a surface selected from the group consisting of the valve seated surface and the seating surface, and the inflow orifices and the outflow orifices are formed so as not to overlap each other in a state in which the seating surface is seated on the valve seated surface; wherein an inside inflow channel is formed inside a first member where the inflow orifices are formed and an inside outflow channel comprising a downstream-side inside outflow channel is formed inside a second member where the outflow orifices are formed; and wherein the inside inflow channel is in communication with the inflow channel and a plurality of the inflow orifices, and the downstream-side inside outflow channel is in communication with the outflow channel and a plurality of the outflow orifices via a plurality of upstream-side inside outflow channels; wherein the inflow orifices are formed on multiple annular concave grooves that are formed on a surface selected from the group consisting of the valve seated surface and the seating surface; wherein the outflow orifices are formed on multiple annular concave grooves that are formed on a surface selected from the group consisting of the valve seated surface and the seating surface and that are different from the concave grooves where the inflow orifices are formed; and wherein a combined opening area of the inflow orifices formed on an outermost side concave groove of the multiple annular concave grooves containing the inflow orifices is larger than a combined opening area of the inflow orifices formed on another of the multiple annular concave grooves containing the inflow orifices.