Actuating drive and method for cooling a solid body actuator housed in an actuating drive with an actuating element

US9899592B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Tobias Melz · Darmstadt, DE
• Michael Matthias · Darmstadt, DE
• Holger Hanselka · Darmstadt, DE

Key dates

• Filing date: Jul 23, 2013
• Grant date: Feb 20, 2018
• Expiry date: Aug 31, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10N35/80

Abstract

The invention is an actuating drive for deflecting an actuating element using a solid body actuator (2) when an electrical voltage or an alternating magnetic field is applied, to cause a change in length. A housing (1) encloses the solid body actuator to define an interspace (13) in a fluid-tight manner. Furthermore, the solid body actuator includes a hollow duct (6) having one end connected to a first hollow conduit (20) passing through the housing and the other end opening into the interspace (13). The interspace is additionally connected in a fluid-tight manner to a second hollow conduit (21) passing through the housing.