Hydrogen recirculation pump heating and sealing assemblies and methods
US12410818B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 7, 2023 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Mar 3, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A recirculation pump includes an impeller, a pump motor assembly, and a heater. The pump motor assembly includes a pump housing having a pump cavity and a pump motor arranged in the pump cavity that drives the impeller, the pump housing arranged axially away from the impeller. The heater is disposed on or in the pump housing and spaced apart from the impeller. The heater is configured to increase a temperature of any portion of the fluid that leaks from the impeller into the pump cavity and resides in the pump cavity. The increase in the temperature causes the fluid that resides in the pump cavity to flow toward the impeller and exit the pump cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.