Abstract: An air cooling device includes a thermally insulated container packed with encapsulated refrigerant and configured to pass incoming air for cooling. A tubular housing accommodates the packed container. A fan blower within the top portion of the housing draws ambient air through the bottom of the container within the refrigerant-packed interior of the container against gravity to prolong the air cooling period. The encapsulated refrigerant is implemented as a plurality of compacted frozen glycol balls serving as primary source of cooling for the incoming air. A multitude of pockets filled with cold air form between the compacted frozen glycol balls during device operation. These cold air pockets serve as secondary source of cooling for the flowing air.

Abstract: An air cooling device includes a thermally insulated container being packed with encapsulated refrigerant and adapted to pass incoming air for cooling. The air cooling device has a housing adapted to accommodate the thermally insulated container and force the incoming air to flow inside the refrigerant-packed container against gravity to ensure a prolonged air cooling period. The encapsulated refrigerant is configured as a plurality of compacted frozen glycol balls serving as primary source of cooling for the incoming air. Air pockets are formed between the frozen glycol balls that serve as secondary source of cooling for the incoming air.