High-pressure side separation of liquid lubricant for lubricating volumetrically working expansion machines

US10024196B2 · kind B2 · utility

Assignee

• ORCAN ENERGY AG · DE

Inventors

• Richard Aumann · Munich, DE
• Andreas Schuster · Annaberg-Buchholz, DE
• Andreas Sichert · Munich, DE

Key dates

• Filing date: Apr 12, 2012
• Grant date: Jul 17, 2018
• Expiry date: Mar 30, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01C1/344
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a method for lubricating an expansion machine (30) in a thermodynamic cycle device, wherein the thermodynamic cycle device comprises the expansion machine, a feed pump (50), a lubricant separator (10) and a working medium containing a lubricant, and wherein the method comprises the following steps: The working medium is subjected to pressure by means of the feed pump. The pressurized working medium is delivered by the feed pump to the lubricant separator. At least part of the lubricant is separated from the working medium by means of the lubricant separator. At least part of the separated lubricant is delivered by the lubricant separator to the expansion machine. The invention further relates to a thermodynamic cycle device comprising a working medium that contains a working fluid and a lubricant, an expansion machine, a feed pump for subjecting the working medium to pressure, and a lubricant separator for separating at least part of the lubricant from the working medium, wherein the cycle device is designed to deliver at least part of the separated lubricant from the lubricant separator to the expansion machine.