Electronic sensing and display system for a refrigerator

Details Electronic sensing and display system for a refrigerator Electronic sensing and display system for a refrigerator

1981-04-20

1983-06-14

Wayner, William E.

Refrigeration

With indicator or tester

Diverse function indicators or testers

165 11R, 236 94, 340518, F25B 4900, G05D 2300

Patent

active

043875785

ABSTRACT:
A sensing and display system for a refrigerator includes a plurality of sensors which are sequentially monitored at a first rate in order to determine whether certain conditions in the refrigerator are within predetermined ranges. If the sensed conditions are within their ranges, a first plurality of visual indicators are sequentially energized at a second rate and a separate indicator is continuously energized to indicate normal operating conditions. If the system detects that one or more of the sensed conditions are not within their ranges, the first plurality of indicators and the separate indicator are de-energized, and one or more of a second plurality of indicators are energized to inform the user of the existence of one or more abnormal operating conditions. The system delays an abnormal condition indication, such as an overtemperature condition, until the condition has existed for a predetermined period of time. The system also provides separate and distinct indications for a presently existing overtemperature condition and a previous overtemperature condition which has since disappeared.

REFERENCES:
patent: 3940739 (1976-02-01), Quimet
patent: 3984825 (1976-10-01), Fujita
patent: 3988730 (1976-10-01), Valker
patent: 4038061 (1977-07-01), Anderson et al.
patent: 4146884 (1979-03-01), Kurn
patent: 4256258 (1981-03-01), Sekiya

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