| 摘要 |
A control valve in which a PWM (pulse width modulated) control pressure signal acts on a membrane to which a control rod is connected tends to wear, and the device to which the control rod is attached likewise tends to wear, due to the transmission of undesired PWM control pressure pulsations. A third chamber is provided in the control valve housing. Control pressure pulsations enter the third chamber via a pressure medium connection. By providing at least one throttle aperture in a partition wall between the third chamber and the membrane acted upon by the pressure medium, it is possible to attenuate the pressure waves, thereby damping the vibration of the control rod, thus avoiding wear. |
| 主权项 |
1. A control valve (1) having a housing (2) which has a pressure medium connection (8), and which is divided by means of a gas-tight membrane (3) into a first chamber (4), to which a control pressure (P) can be introduced, and a second chamber (5), in which a membrane (3) biasing spring (6) is provided, wherein in the housing (2) a third chamber (7) is arranged for pressure wave attenuation, which is provided with the pressure medium connection (8), and which is in fluid communication with the second chamber (5) via at least one throttle aperture (9, 10), wherein the throttle aperture (9, 10) is arranged in a partition wall (11) between the second chamber (5) and the third chamber (7). |
