Stromregelventil

Details

Veröffentlichungs-Nr.

EP3171058

Aktenzeichen

EP16189678

Anmeldetag

20. September 2016

Veröffentlichung

22. Dezember 2021

Erteilung

22. Dezember 2021

Rechtsraum

EP

IPC

F16K1/36F16K1/42F16K47/02

Abstract

Provided is a flow control valve that can effectively reduce the generation of noise due to fluctuations in the pressure or a refrigerant separation phenomenon that may occur while a refrigerant passes through the valve orifice, and also reduces the pressure loss and the like. The flow control valve includes a valve body 5 including a valve chamber 6 and a valve orifice 10; and a valve element 30 with a curved surface portion 33 adapted to change the flow rate of a fluid through the valve orifice 10 in accordance with the lift amount of the valve element 30, the curved surface portion 33 having a curvature or a control angle that is increased continuously or in stages toward the tip end of the curved surface portion 33. The orifice diameter of the valve orifice 10 is sequentially increased in three or more stages in a direction away from the valve chamber 6. Specifically, the valve orifice 10 includes, sequentially arranged from the side of the valve chamber 6, a first valve orifice portion 11 with an orifice diameter D1, a second valve orifice portion 12 with an orifice diameter D2 (> Dl), and a third valve orifice portion 13 with an orifice diameter D3 (> D2). More preferably, D1, D2, and D3 are set so that each of (the valve orifice diameter ratio: D2/D1) and (the valve orifice diameter ratio: D3/D2) is within a specific range.

Anmelder

Firma

Fujikoki Corporation

Land

🇯🇵 Japan

Fachgebiete