| 摘要 |
A control arrangement for the superheat temperature of at least one evaporator (8) of a refrigeration system having a refrigerant circulation, in which at least one compressor, a condenser, an electronically controlled expansion valve (7) and the evaporator (8) are arranged in series, contains a measuring device (9, 10, 11) connected to the evaporator (8), which device produces a measurement signal (Tü) that is a measure of the superheat temperature of the refrigerant in the evaporator (8), a comparator (1) to which the measurement signal (Tü) and a desired superheat temperature signal (Tüs) are arranged to be supplied, and a PID controller (2) arranged between the comparator (1) and the expansion valve (7). For rapid compensation of changes in the superheat temperature, a control signal (S) proportional to the evaporation temperature (To) of the refrigerant is arranged to be supplied additionally to the PID controller (2).
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