Refrigerated boxcar ducted floor

A floor for a refrigerated container comprising a pair of side walls, a roof, the floor, and a refrigeration unit, the floor comprising:

• a bottom structure comprising a plurality of channels for return air flow from an interior of the container to the refrigeration unit;
• at least two top plates coupled to the bottom structure, wherein each of the top plates extends longitudinally along the bottom structure and is configured to rotate up and away from the bottom structure proximate one of the side walls of the pair of side walls;
• a return air gutter extending longitudinally between the bottom structure and one of the side walls of the container;
• and wherein:
• when the top plates comprise openings that permit return air to flow through the top plates into the plurality of channels of the bottom structure, a width of the top plates extends transversely to obstruct a larger portion of the return air gutter than when the top plates prevent return air from flowing through the top plates into the plurality of channels of the bottom structure;
• and
• when the top plates prevent return air from flowing through the top plates into the plurality of channels of the bottom structure, a width of the top plates extends laterally to obstruct a smaller portion of the return air gutter than when the top plates comprise openings that permit return air to flow through the top plates into the plurality of channels of the bottom structure.

A floor for a refrigerated container comprising a pair of side walls, a roof, the floor, and a refrigeration unit, the floor comprising:

• a bottom structure comprising a plurality of channels for return air flow from an interior of the container to the refrigeration unit;
• at least two top plates coupled to the bottom structure, wherein each of the top plates extends longitudinally along the bottom structure and is configured to rotate up and away from the bottom structure proximate one of the side walls of the pair of side walls;
• a return air space extending laterally between the bottom structure and an end of the container;
• and wherein:
• when the top plates comprise openings that permit return air to flow through the top plates into the plurality of channels of the bottom structure, a length of the top plates extends longitudinally to obstruct a larger portion of the return air space than when the top plates prevent return air from flowing through the top plates into the plurality of channels of the bottom structure;
• and
• when the top plates prevent return air from flowing through the top plates into the plurality of channels of the bottom structure, a length of the top plates extends longitudinally to obstruct a smaller portion of the return air space than when the top plates comprise openings that permit return air to flow through the top plates into the plurality of channels of the bottom structure.