Absorption type refrigerating apparatus

Refrigeration – Automatic control – Of closed system sorbent type

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62141, F25B 1500

Patent

active

056972253

ABSTRACT:
In an absorption type refrigerating apparatus which comprises a temperature detector 30 for detecting the outlet temperature of cold water supplied from an evaporator 4 and a controller 31 for carrying out PID control of the amount of combustion of a burner B installed in a high-temperature regenerator 1 by comparing a detection temperature with a set temperature when the detection temperature of the temperature detector is lower than (the set temperature+a predetermined temperature 1), and for controlling the amount of combustion of the burner B to a value larger than the amount of combustion based on PID control when the detection temperature is equal to or higher than (the set temperature+the predetermined temperature 1), the controller which has received a signal from the temperature detector at the time of the start of operation (start-up) is activated to control the amount of combustion of the burner B to a value larger than the amount of combustion based on PID control so as to increase the capacity of the absorption type refrigerating apparatus, thereby shortening the start-up time and stabilizing the cold water outlet temperature at the same time.

REFERENCES:
patent: 5156013 (1992-10-01), Arima et al
patent: 5517830 (1996-05-01), Ohuchi et al.
patent: 5586447 (1996-12-01), Sibik et al.

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