公开(公告)号：US20040256586A1

公开(公告)日：2004-12-23

申请号：US10869369

申请日：2004-06-16

Applicant: Danfoss A/S

Inventor： Lars Denning ,  Kenneth Michelsen ,  Joergen Seindal Wiwe

IPC: F16K031/44

CPC classification number: F16K39/022 ,  F16K31/047 ,  F16K31/56

Abstract: The invention concerns a fail-safe valve having a valve element, and a control motor being connected with the valve element via a driveline. It is endeavoured to ensure the tightness of the refrigeration system in a simple manner. For this purpose, it is ensured that the valve element is located inside and the control motor outside a closed valve housing, that the drive line has a magnetic coupling, which acts through the housing, and that the valve element is pressure-released. In addition, a resetting device is provided that causes the valve element to be returned to a predetermined position upon the undesired cessation of control motor operation.

Abstract translation: 本发明涉及一种具有阀元件的故障安全阀，以及通过传动系与阀元件连接的控制电动机。 努力以简单的方式确保制冷系统的紧密性。 为此，确保阀元件位于内部并且控制马达位于封闭的阀壳体外部，驱动线具有通过壳体作用的磁耦合，并且阀元件被压力释放。 此外，提供了一种复位装置，其在不期望的停止控制电动机操作时使阀元件返回到预定位置。