Vorgesteuertes Magnetventil

Details

Veröffentlichungs-Nr.

EP4112984

Aktenzeichen

EP21198401

Anmeldetag

22. September 2021

Veröffentlichung

4. Januar 2023

Rechtsraum

EP

IPC

F16K31/40

Abstract

A pilot controlled solenoid valve (1) is described comprising a housing (2) having an inlet (3) and an outlet (4), a valve seat (5) between inlet (3) and outlet (4), a valve element (6) cooperating with the valve seat (5), and a solenoid arrangement (7) having a coil (8) and a moveable armature (9), wherein the valve element (6) is arranged between an inlet chamber (11) connected to the inlet (3) and a pilot pressure chamber (12) and comprises a pilot channel (15) extending from the pilot pressure chamber (12) to the outlet (4), wherein the moveable armature (9) opens and closes an opening of the pilot channel (15) into the pilot pressure chamber (12) depending on magnetic forces produced by the coil (8). In such a valve noise should be kept small. To this end, pressure decreasing means are provided decreasing a pressure in the pilot pressure chamber (12) below a pressure downstream the valve seat (5) when the valve element (6) is lifted off from the valve seat (5).

Anmelder

Firma

Danfoss A/S

Land

🇩🇰 Dänemark

Fachgebiete