Patent · US Expired

Thermal insulation device

US5137169A · kind A · utility

5Cited by

7References

10Claims

0Family size

Assignee

Asea Brown Boveri, S.A. · CH

Inventors

Klaus-Peter Schulz · Heidelberg, DE
Uwe Heidtmann · Schallstadt, DE
Horst Eschenbach · Waldbrunn, DE

Key dates

Filing date	Dec 6, 1990
Grant date	Aug 11, 1992
Priority date	—
Expiry date	Dec 6, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In thermal insulation devices which include a molded part formed of thermal insulation material and a metal housing enclosing the molded part, an evacuation of the thermal insulation device with the aid of a vacuum pump requires a relatively long pumping time. The invention proposes providing groove-like recesses in the molded part for reducing the suction resistance. The groove-like recesses form suction channels together with the wall of the metal housing. Such vacuum thermal insulation devices are used, for example, for thermally insulating high-temperature batteries.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.