Display apparatus for displaying abnormalities in low temperatur

Details Display apparatus for displaying abnormalities in low temperatur Display apparatus for displaying abnormalities in low temperatur

1992-08-17

1994-08-16

Tanner, Harry B.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62127, 62298, F25B 4902

Patent

active

053375750

ABSTRACT:
In a low temperature storage house having a temperature sensor for detecting an internal temperature of the storage house, a cooling apparatus for cooling the interior of the storage house, cooling control means for repetitively controlling operation and stop of the cooling apparatus based on the internal temperature detected by the temperature sensor and for maintaining the internal temperature in a value between predetermined upper and lower limit temperatures, and display means for indicating the internal temperature detected by the temperature sensor in the form of letters, an abnormal display apparatus for the low temperature storage house comprises abnormal detection means for detecting the plural kinds of abnormalities respectively occurring in the low temperature storage house; abnormal data forming means for forming abnormal data indicative of each of the abnormal kinds in accordance with the kinds of abnormalities detected by the abnormal detection means; and display control means for applying each of the abnormal data formed by the abnormal data forming means and the internal temperature data indicative of the internal temperature respectively to the display means at lapse of a predetermined time such that the display means indicates the kinds of abnormalities and the internal temperature dependent on each of the abnormal data sequentially and alternately with lapse of time.

REFERENCES:
patent: 4381549 (1983-04-01), Stamp, Jr. et al.
patent: 4387578 (1983-06-01), Paddock
patent: 4827730 (1989-05-01), Doi et al.

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