Fluid rotating apparatus with sealing arrangement
US5374173A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1993 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/51
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid rotating apparatus includes a casing having a gas inhaling inlet and a gas discharge outlet, rotors driven in the casing by a driving mechanism and having fluid-transporting grooves which engage each other in synchronous rotation, and bearing portion for supporting the rotors. A communicating path is formed at one of the rotors and the and the casing for communicating a gas discharge-side inner space and a space defined by an inner surface of the casing and the fluid-transporting groove of an outer surface of each rotor with each other. The gas discharge-side inner space is defined by an end surface of the rotor opposite to a gas inhaling-side surface thereof, and a sealing portion which is formed between the rotor and the casing to prevent fluid from flowing into the gas discharge-side inner space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.