Method and apparatus for refrigeration system control having electronic evaporator pressure regulators
US7134294B2 · kind B2 · utility
5Cited by
47References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | May 13, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/16
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for refrigeration system control includes a control system operable to meet cooling demand and control suction pressure for a plurality of refrigeration circuits each including a variable valve and an expansion valve. The controller controls the variable valve independently of the expansion valves to meet cooling demand by determining a change in a measured parameter and controlling at least one of the variable valves based upon the change to an approximately fully open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.