| 摘要 |
The present invention provides an electromagnetic proportional valve and a breathing machine comprising the electromagnetic proportional valve. The electromagnetic proportional valve comprises: a valve body (2), having a cavity structure; a coil bracket (11), sealed at an opening end of the cavity structure of the valve body (2); a coil (9), wrapped around the coil bracket (11); an armature (8), fixedly disposed in an inner cavity of the coil bracket (11); a valve core bracket (5), having one side connected onto a first spring (3) and the other side connected onto a second spring (7), and suspended in the cavity structure of the valve body (2) through the first spring (3) and the second spring (7); and a valve core (4), disposed in the valve core bracket (5). Through the electromagnetic proportional valve of the present invention, instability incurred by a friction force to flow control can be effectively avoided, and a hysteresis error of the flow control can be overcome, thereby achieving stable control over a small flow and reducing the manufacturing difficulty. The breathing machine according to the present invention comprises the electromagnetic proportional valve. |
