Refrigerator system for a container

Details Refrigerator system for a container Refrigerator system for a container

1989-12-21

1991-03-12

Ford, John

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

236 94, 165 28, 165 12, 374 4, 374 43, F25B 2900, G05D 2300

Patent

active

049985825

ABSTRACT:
A known refrigerating system for a container is improved to include container wrong or abnormal condition diagnostic facilities. Such additional facilities include a container inside temperature detector, a container outside temperature detector, a control responsive to a wrong condition diagnosis instruction for operating an evaporator fan and an electric heater of the refrigerating system, and a wrong condition diagnostic device for diagnosing whether or not a wrong condition of the container is present on the basis of the temperatures detected by the respective temperature detectors after a predetermined period of operation of the evaporator fan and the electric heater. If the temperature detected by the container inside temperature detector has risen to a predetermined temperature or higher in relation to the temperature detected by the container outside temperature detector, the wrong condition diagnostic device diagnoses that the container is normal, but if the temperature has not risen to the predetermined temperature, the container is diagnosed to be abnormal.

REFERENCES:
patent: 4024751 (1977-05-01), Potrzebowski
patent: 4236403 (1980-12-01), Poppendick
patent: 4237732 (1980-12-01), Grein et al.
patent: 4246785 (1981-01-01), Sellers et al.
patent: 4296627 (1981-10-01), Lindstrom
patent: 4381549 (1983-04-01), Stamp, Jr. et al.
patent: 4574871 (1986-03-01), Parkinson et al.
patent: 4647221 (1987-03-01), Szabo

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