Method of controlling and controller for a refrigerator

Details Method of controlling and controller for a refrigerator Method of controlling and controller for a refrigerator

1991-12-09

1993-12-07

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

70280, 361187, 361191, H01H 4700, E05B 4700

Patent

active

052688119

ABSTRACT:
A refrigerator controller which can positively lock and unlock a door thereof in accordance with a command signal from a host-computer connected therewith. The refrigerator controller includes a power supply voltage indicating device. A DC power supply is charged by a DC power source and energizes a door lock mechanism activating device to lock and unlock the door. DC voltage generated by the DC power supply rises as it is charged by the DC power source. The door lock mechanism activating device can be energized to positively lock and unlock the door by being fed with a predetermined lower limit voltage. Only when the DC voltage generated by the DC power supply is no lower than the predetermined lower limit voltage is the door lock mechanism activating device energized by the DC power supply to lock and unlock the door of the refrigerator in accordance with the command signal.

REFERENCES:
patent: 3926021 (1975-12-01), Genest et al.
patent: 3953769 (1976-04-01), Sopko
patent: 4148092 (1979-04-01), Martin
patent: 4495540 (1985-01-01), Remington et al.
patent: 4558391 (1985-12-01), Ward et al.
patent: 4716490 (1987-12-01), Alexanian
patent: 4742426 (1988-05-01), Lavelle
patent: 4755799 (1988-07-01), Romano

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