Refrigerated container with controlled air distribution

Refrigeration – Gas controller or director – Cooled gas directed relative to cooled enclosure

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Details

624579, 62239, F25D 1704

Patent

active

058097988

ABSTRACT:
Containers for transportation of bulk cargo susceptible to spoilage, that have a controlled temperature profile. The refrigerated containers include opposed insulated side walls each of which include internal channels for carrying return air from the floor of the container upward into a plenum. Each plenum is closed at one end, and in fluid communication with a refrigeration unit at the other end to supply return air to the refrigeration unit. Refrigerated air is blown from the refrigeration unit into a central air distribution duct that extends longitudinally along the roof of the container. The central duct is supplied with a multiplicity of spaced apart apertures, and is preferably tapered from a widest point in the vicinity of the refrigeration unit. Thus, substantially equal refrigerated airflow can be obtained throughout the refrigerated container. The container may also be divided into zones of different temperatures by interposing a shutter arrangement between channels of each of the side walls and their respective plenum. By controlling return airflow from zones of the container, flow of air from the central duct into those zones is also controlled. Alternatively, or in addition, airflow from the central duct may also be controlled by a shutter arrangement.

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"The Story of Our New Rent-A-Container Is a Lot of Cold Air," sales brochure, ca. 1970, Coldwrap Sea Containers Inc.
1990 Ashrae Handbook, Refrigeration Systems and Applications, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
1982 Ashrae Handbook, Applications, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
1986 Ashrae Handbook, Refrigeration Systems and Applications, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
Thermo King sales brochure for Models SB-III and SB-III Max.
"Air Moving Over, Under Around Load Lowers Arrival Temperatures of Lettuce," Refrigerated Transporter, p. 52, Nov., 1987.
"FlowGuide Systems" advertisement, Refrigerated Transporter, p. 123, Nov., 1987.
Reefco brochure, 20' to 50' ISO and High Cube Self-Powered and Plug-In-Only Refrigerated Containers, undated.

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