Sealing device for rotary fluid machine, and rotary fluid machine
US8444379B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | May 14, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/669
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sealing device includes a housing rotatably accommodating a rotary shaft, guide parts extending along a radial direction and an axial direction of the rotary shaft, and arranged side-by-side in a circumferential direction of the rotary shaft, a partition part that is a partition between spaces between the guide parts and an outside space, a first seal part that is an annular protrusion, forming a first gap with respect to the rotary shaft or the partition part, and blocking a flow of fluid passing through the outside space, and a second seal part that is an annular protrusion extending in the radial direction, forming a second gap with respect to the rotary shaft or the housing, and blocking a flow of fluid that has passed through the spaces between guide parts and a flow of fluid that has passed through the first seal part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.