Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
US6047557A · kind A · utility
191Cited by
30References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1997 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Sep 29, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control for a refrigeration system serviced by a special pulse width modulated compressor coupled to a condenser and evaporator. The system can be of the distributed type wherein the condenser and compressor may be coupled to service a group of adjacent refrigeration cases, wherein each case would have its own evaporator. A controller is coupled to a load sensor for producing a variable duty cycle control signal in which the duty cycle is a function of demand for cooling. Moreover, fuzzy logic techniques may be utilized in order to provide self adaptive tuning control for the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.