Proportional solenoid valve

摘要

In a small-sized and low-cost proportional solenoid valve capable of controlling bidirectional fluid flows, a core 2 is fixed in a pipe 1. A hollow shaft 3 defining a valve seat 4 and having valve holes 5 is axially fixed in the core 2. A hollow cylindrical valve element 6 is axially movable and uses the shaft 3 as a guide. The element 6 is actuated by a spring 7 and by a plunger 8, to open and close the valve holes 5. Outside the pipe 1, a solenoid coil 10 is provided for driving the plunger 8. The pipe 1 forms a body, and the valve component parts arranged within the pipe 1. The operation of the hollow cylindrical valve element 6 is not adversely affected by the direction of the fluid flow This allows to control bidirectional fluid flows. <IMAGE>