Patent · US Expired

Fuel cell block

US6955862B2 · kind B2 · utility

6Cited by

7References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Hartnack · Erlangen, DE
Josef Lersch · Heroldsbach, DE
Arno Mattejat · Bubenreuth, DE

Key dates

Filing date	Jun 17, 2002
Grant date	Oct 18, 2005
Priority date	—
Expiry date	Sep 4, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The fuel cell block has stacked elements. At least two adjacent elements define an intermediate space between them. Radial channels are formed between the two elements or in one of the elements. The radial channels connect the space to an axial channel through the stack. At least one of the radial channels is a blind channel which, in contrast with the other radial channels, does not allow fluid communication between the space and the axial channel. The number of radial channels that are configured as blind channels influences the quantity of operating medium flowing through the intermediate space.

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