Refrigeration control system
US7992398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2008 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Aug 28, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/12
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A control apparatus and associated method for a refrigeration system are provided. The control apparatus includes sensors capable of detecting controlled refrigerator zone temperatures and superheat levels of refrigerant vapour exiting an evaporator. The control module receives input from the sensors, compares the input to a determined controlled refrigerator zone set point and a learned superheat level, and generates an output with respect thereto. In particular the output modulates an electronic evaporator pressure regulating (EEPR) valve between an open and a closed position in response to detecting abnormal operation of the thermostatic expansion valve or electronic expansion valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.