Refrigeration control system

Details Refrigeration control system Refrigeration control system

2011-08-09

2011-08-09

Jiang, Chen-Wen (Department: 3784)

Refrigeration

Automatic control

Refrigeration producer

C062S204000, C062S222000

Reexamination Certificate

active

07992398

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.

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