| 摘要 |
<p>A bidirectional solenoid valve comprises a valve seat (1) provided with a main valve port (11) and a valve chamber. A piston (2) is provided in the valve chamber, and the piston (2) divides the valve chamber into an upper chamber (12) and a lower chamber (13). An upper end portion of the piston (2) is provided with a pilot valve port (21). A circulation gap (14) is disposed between a circumferential side wall of the piston (2) and a corresponding inner wall of the valve chamber. The piston is provided with a first branch in unidirectional communication from the upper chamber (12) to an end of a horizontal connecting tube (31), and a second branch in unidirectional communication from the upper chamber (12) to an end of a vertical connecting tube (32). The piston is further provided with a third branch in unidirectional communication from an end of the vertical connecting tube (32) to the upper chamber (12). The bidirectional solenoid valve can reduce the number of components and parts, simplify the assembly process, and reduce the manufacturing cost.</p> |
