Electrically driven secondary air pump including compressor having vaned diffuser ring embedded in volute
US12404870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Apr 13, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/444
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air pump includes a compressor having a compressor wheel mounted in a housing assembly defining an air inlet for leading air flow into the compressor wheel and defining a volute for receiving compressed air from the compressor wheel. A vaned diffuser ring is mounted within the housing assembly radially outward of the compressor wheel and includes an annular vane plate and a plurality of circumferentially spaced vanes having proximal ends rigidly attached to a first side of the plate, the vanes extending axially from the vane plate and distal ends of the vanes being disposed proximate a first wall of the housing assembly axially spaced from the plate such that a vaned diffuser passage is defined between said first wall and the vane plate. The vaned diffuser ring is embedded within the volute such that a second side of the vane plate is wetted by air within the volute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.