Controller for a refrigeration unit

Details Controller for a refrigeration unit Controller for a refrigeration unit

1989-10-10

1990-09-25

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

236 94, 235375, F25B 4900

Patent

active

049585029

ABSTRACT:
A controller which controls a refrigerating unit so that a temperature detected by a controlled temperature detector is equal to a setting temperature, includes a memory for storing the temperature detected by the detector, a card data input-output unit for reading data from a card and writing data in the card, a reading unit of the card data from the input-output unit, and a discriminator for discriminating whether the card is a setting card or a recording card on the basis of the card data read from the reading unit, whereby (a) when the discriminator discriminates that the card is the setting card, the setting temperature is set on the basis of the card data, and (b) when the discriminator discriminates that the card is the recording card, the temperature data stored in the memory is read to be written in the recording card through card data input-output unit, so that administration of data such as the setting temperature and the controlled temperature by a computer is attained and wrong setting of the temperature by the operator can be eliminated.

REFERENCES:
patent: 3775595 (1973-11-01), Rosse et al.
patent: 4102492 (1978-07-01), Gold et al.
patent: 4448035 (1986-05-01), Moriyama
patent: 4663725 (1987-05-01), Truckenbrod et al.

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