Valve heated by split solenoid
US7549438B2 · kind B2 · utility
4Cited by
10References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 2006 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Jun 22, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6606
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heated valve that has particular application for one or more of a drain valve, a pressure release valve and a bleed valve in an anode outlet unit of a fuel cell system. The valve includes a divided solenoid having at least two coils. During a normal operation of the valve, current is applied to both coils. During a heat-up operation of the valve, current is applied to only one of the coils so that the reduced resistance of a single coil provides increased heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.