Internal air damper for a combination refrigerator-freezer

Details Internal air damper for a combination refrigerator-freezer Internal air damper for a combination refrigerator-freezer

1990-01-22

1991-05-28

Wayner, William E.

Refrigeration

Automatic control

Of external fluid or means

236 493, 25112904, 25112911, F16K 3102, F25D 1704

Patent

active

050183648

ABSTRACT:
An internal air damper for a combination refrigerator-freezer which serves to maintain a preset and/or desired temperature within the refrigerator by selective passage of colder air from the freezer. The arrangement is in the form of a rotatable baffle or door which opens in response to a temperature demand. The amount of colder air passage can be made available through either of two modes, i.e. by stopping the baffle at an open position to allow cool air flow into the refrigerator until the thermostat is satisfied, and, prior to reaching a freezing thermostat temperature, reenergizing the motor for baffle movement to closed position, or moving the baffle to an open position, and continuing baffle movement for gradual and better distribution of the colder air until the thermometer is satisfied and the baffle stops at a closed position.

REFERENCES:
patent: 3251548 (1966-05-01), Foster
patent: 3934797 (1976-01-01), Perlmutter
patent: 4646531 (1987-03-01), Song
patent: 4646962 (1987-03-01), Grant
patent: 4735057 (1988-04-01), Janke

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