Portable refrigerator

Details Portable refrigerator Portable refrigerator

1981-03-13

1982-11-30

Makay, Albert J.

Refrigeration

Automatic control

Refrigeration producer

62294, 62457, 62514R, F25B 4104, F25D 310

Patent

active

043610137

ABSTRACT:
A portable refrigerator 10 has a thermostat system that keeps the temperature of the refrigerator chamber 13 cool by allowing vapor to escape from an opening in a container 16 of pressurized liquid positioned inside chamber 13. A thermally expandable and contractible support in thermal communication with container 16 has a mount fixed relative to the container and a movable end disposed near the top of the container and carrying an element that opens and closes the vapor opening. The position of the movable end and the opening and closing of the vapor opening are then determined by the temperature of container 16. The vapor opening opens when chamber 13 warms container 16 and the support to an upper threshold temperature. The escaping vapor then rapidly lowers the temperature of container 16 and the support to a substantially lower threshold temperature at which the vapor opening closes.

REFERENCES:
patent: 2496816 (1950-02-01), Schlumbohm
patent: 2742927 (1956-04-01), Frumet, Jr.
patent: 3093979 (1963-06-01), Ehrens et al.
patent: 3148515 (1964-09-01), Jentis et al.
patent: 3456455 (1969-07-01), Sapir
patent: 3648474 (1972-03-01), Moline
patent: 3881321 (1975-05-01), Riley
patent: 4129432 (1978-12-01), Garside

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