Method for adjusting a piston in a linear compressor

US7868566B2 · kind B2 · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Mario Bechtold · Hemhofen, DE
• Johannes Reinschke · Koblenzer Straße, DE

Key dates

• Filing date: Jan 25, 2007
• Grant date: Jan 11, 2011
• Expiry date: Nov 2, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B35/045
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for operating a linear compressor including a linear drive with a stator and a rotor configured for displacement by a magnetic field of the stator against a spring force, and a compression chamber which is delimited by a displaceable piston coupled to the rotor during the operation of which an alternating current is applied to the stator in order to drive the rotor in an reciprocatingly, the method including the steps of applying, prior to operation, a direct current with a first polarity to the stator in order to displace the rotor from a rest position, measuring a first end position attained by the rotor under the action of the direct current, and controlling, during operation, the intensity of the alternating current with which the stator is excited in a manner wherein the rotor does not reach the first end position or reaches it at a reduced speed.