Adaptive refrigerant control algorithm

Details Adaptive refrigerant control algorithm Adaptive refrigerant control algorithm

1988-09-14

1989-07-18

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62225, 236 78D, F25B 4100

Patent

active

048480991

ABSTRACT:
A refrigeration system comprises a compressor, a condenser, an evaporator, an accumulator, and an adjustable controllable expansion valve. An electronic control system monitors the value of superheat and accordingly provides an electrical control signal to adjust the controllable expansion valve in order to maintain a set point superheat value. An unfiltered path is provided to ensure expedient response when the system starts operation and when dynamic changes occur. A filtered path is provided to reduce hunting, or oscillations about the set point, of the superheat value during steady state operation.

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patent: 4571951 (1986-02-01), Szymaszek

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