| 摘要 |
The present invention relates to a solenoid valve which allows fluid to flow when a plunger moves, and prevents a foreign substance from entering while the fluid flows. The solenoid valve comprises a solenoid and a valve operated by the solenoid. The solenoid comprises: a bobbin formed in a hollow spool shape; a coil wound on an outer circumferential surface of the bobbin; a core comprising a flange tightly mounted on an upper surface of the bobbin, a body protruding downwards from the flange to penetrate the bobbin, and an operation space formed in the body; a plate tightly mounted on a lower surface of the bobbin, formed in an annular shape, and into which a lower end of the core is inserted; a plunger which is installed in the operation space to be moved, and ascends to operate the valve when power is applied; and a case to enclose the bobbin on which the coil is wound, the core, and the plate. The lower end of the core is separated from the bottom of the case, and a first gap is formed between the core and the case. A first flow passage connected to the operation space through the first gap is formed on an inner circumferential surface of the plate, and a second flow passage connected to the first flow passage is formed on the lower surface of the bobbin. |
