Thermodynamic systems including gear type machines for compression or expansion of gases and vapors
US5394709A · kind A · utility
14Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Nov 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/072
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Actual thermodynamic processes occurring in a system such as a heat pump or refrigeration plant are made to approach theoretical ideal processes, e.g. an isothermal (T.sub.o), by use of a multistage gear machine as compressor and/or expander in the system, and conditioning, such as cooling, the system working fluid between successive stages in the machine. The individual stages of the gear machine each include a pair of meshing gears, preferably cylindrical spur gears of equal diameter and diminishing width from stage-to-stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.