Thermally insulating wall

US7645003B2 · kind B2 · utility

Assignee

• BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

• Udo Wenning · Giengen an der Brenz, DE
• Hans-Frieder Eberhardt · Biberach, DE
• Michael Neumann · Therwil, CH
• Thomas Zeiler · Nittendorf, DE

Key dates

• Filing date: Oct 1, 2001
• Grant date: Jan 12, 2010
• Expiry date: Nov 25, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B80/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A refrigeration appliance includes a thermally insulating housing and a thermally insulating door. At least one of the housing and the door define an evacuated interspace and have an evacuated thermal insulation filling the interspace, a shaped, thermoplastic, substantially gas and water vapor impermeable outer cladding, and a shaped, thermoplastic, substantially gas and water vapor impermeable inner cladding. The inner cladding and the outer cladding substantially surround the interspace in a vacuum-tight manner. The cladding can be formed from polyolefins, polyvinylidene chloride, perfluoroalkoxy polymers. For reducing gas permeability, the cladding can be formed from ethylene/vinyl alcohol copolymer, polyacrylonitrile, and polyamide. The claddings can have co-extruded and/or laminated layers. The cladding can include a sputtered metal layer and/or a plastic/metal composite foil. The cladding can be formed from a thermoformed or blow-molded plastic. The insulation can have pressed silica or aerogel plates with a density of between 100 and 150 kg/m3.