Household refrigerator air flow control and method

Details Household refrigerator air flow control and method Household refrigerator air flow control and method

1980-03-24

1981-10-27

Tapolcai, Jr., William E.

Refrigeration

Processes

Circulating external gas

62408, F25D 1706

Patent

active

042966116

ABSTRACT:
A refrigerator having a freezer compartment on top and a fresh food compartment below with an air duct connecting the two compartments. A temperature control system and method of controlling is provided and includes a temperature sensing element located at the top of the fresh food compartment and shielded from the stream of cold air being directed into the fresh food compartment. The temperature sensing element changes the temperature in both the freezer and fresh food compartments without changing the constant ratio of those respective compartment temperatures. An air flow assembly divides the cold air entering the fresh food compartment through the connecting air duct between the top of the compartment and the bottom. The air flow control assembly is arranged to divide the cold air stream such that the ratio of the difference in the freezer and fresh food compartment temperatures is changed. By this air flow system and method, the interaction between the cold air flow control and the temperature sensing element provides that the temperature in the freezer compartment may be adjusted up or down while the fresh food compartment temperature remains relatively constant.

REFERENCES:
patent: 2241108 (1941-05-01), Akers
patent: 3093981 (1963-06-01), O'Grady
patent: 3107502 (1963-10-01), Herndon, Jr. et al.
patent: 3320761 (1967-05-01), Gelbard
patent: 3364694 (1968-01-01), Cohen et al.
patent: 3403533 (1968-10-01), Bollenbacher
patent: 4009589 (1977-03-01), Webb et al.
patent: 4122687 (1978-10-01), McKee

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