Control arrangement for the superheat temperature of at least one evaporation of a refrigeration system
US5782103A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Jul 21, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control arrangement for the superheat temperature of at least one evaporator of a refrigeration system having a refrigerant circulation, in which at least one compressor, a condenser, an electronically controlled expansion valve and the evaporator are arranged in series, contains a measuring device connected to the evaporator, which device produces a measurement signal Tu that is a measure of the superheat temperature of the refrigerant in the evaporator, a comparator to which the measurement signal Tu and a desired superheat temperature signal Tu.sub.s are arranged to be supplied, and a PID controller arranged between the comparator and the expansion valve. For rapid compensation of changes in the superheat temperature, a control signal S proportional to the evaporation temperature T.sub.o of the refrigerant is arranged to be supplied additionally to the PID controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.