Rotary machine and primary motor-pump assembly provided with this rotary machine
US12215706B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2022 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | May 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21C15/243
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a rotary machine (10), comprising a casing (32) delimiting an oil compartment (31), a shaft (33), a bearing (22, 23, 24), an oil sealing device (35) located between the rotary portion (360) and the upper portion (320) of the casing (32), characterised in that the oil sealing device (35) comprises at least one groove (52) for drawing in external air in the direction (S) of rotation of the shaft (33), the groove (52) being located in the rotary portion (360) and/or in the upper portion (320) of the housing (32), the rotary portion (360) not being in contact with the upper portion (320), the groove (52) for drawing in external air being configured to draw air from the upstream end (521) to the downstream end (522) towards the compartment (31) when the shaft (33) rotates in the direction (S).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.