Multistage vacuum pump with interstage solid material collector and cooling coils
US5173041A · kind A · utility
13Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Sep 12, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C29/0092
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A multistage vacuum pump including a plural set of two lobe type vacuum pumps arranged on a common shaft for rotors and in a common casing. The adjacent pumps are connected in series with each other through a communicating passage formed in a pump casing. A solid material collector having a cooling device is provided in the communicating passage so that it is dismountable from the pump casing. A solid component in a compressed gas is forcibly produced by and adhered to the solid material collector. Thus, it is not necessary to disassemble the pump casing for cleaning the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.