MVD method and device for drying and buffering organic moist products

US9155133B2 · kind B2 · utility

Assignee

• Weco Beratungs—und Beteiligungs GmbH · DE

Inventor

• Michael Wefers · Munich, DE

Key dates

• Filing date: Jun 18, 2010
• Grant date: Oct 6, 2015
• Expiry date: Oct 22, 2032

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F26B3/347
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

A method of drying and buffering organic moist products, particularly food items. Introducing the product into a first chamber, bringing the first chamber to a first reduced ambient pressure, feeding microwave energy from a microwave source so as to increase the temperature and buffer the moist product, and increasing the reduced ambient pressure to a less reduced second ambient pressure multiple times and subsequently reducing the ambient pressure to the first reduced ambient pressure. Wherein the increase of the ambient pressure is carried out faster than the reduction thereof, followed by a final drying of the product in a second chamber while feeding infrared radiation at a third (reduced) ambient pressure. Subsequently, the product is cooled and discharged into the atmosphere. Thus, increased product quality, in particular a more consistent and more stable product is obtained.