Switching membrane for a pressure control valve and a pressure control valve

• Main Authors: Bock, Lukas, Kuemmerling, Volker, Burkhardt, Jens, Jessberger, Thomas
• Format: Patent
• Language: English
• Published: 10.09.2019
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; CRANKCASE VENTILATING; DEVICES FOR VENTING OR AERATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

A switching membrane for a pressure control valve has a plate-shaped flat body with a central area and a bending area surrounding the central area. The central area is provided with a closure area. For switching the switching membrane, the central area can be moved back and forth by a bending movement of the bending area in a direction transverse to an extension of the central area. At least the bending area is made of fluorocarbon rubber. A pressure control valve, especially for crankcase ventilation, is provided with a valve housing that has a housing cover and further is provided with a valve seat. A switching membrane as described above is disposed in the valve housing and switches at pressure differences of at most 500 mbar to release or shut off a flow of fluid at the valve seat.