Refrigeration deck system for vending machine

A vending machine, comprising:

• a product compartment;
• a duct opening into the product compartment;
• and
• a self-contained refrigeration system,
• wherein the self-contained refrigeration system comprises:
• a housing comprising a first chamber and a second chamber, wherein the first chamber includes a first opening and a second opening and the second chamber includes a third opening and a fourth opening;
• an evaporator coil and an evaporator fan mounted in the first chamber and adapted to move air from the first opening, through the evaporator coil, to the second opening;
• and
• a condensing coil, a compressor and a compressor fan mounted in the second chamber, the compressor fan adapted to move air from the third opening, through the condensing coil, over a surface of the compressor, to the fourth opening.
• wherein the housing is adapted to:
• thermally insulate the first chamber from the second chamber and from an exterior of the housing;
• seal the first chamber, such that substantially all air in the first chamber enters and exits the first chamber through the first opening and the second opening, respectively;
• and
• automatically couple the first opening to the product storage compartment and the second opening to the duct when the housing is inserted into the vending machine.

A vending machine, comprising:

• a product compartment;
• and
• a self-contained refrigeration system adapted for insertion into the vending machine, wherein the self-contained refrigeration system includes a molded housing comprising a first chamber and a second chamber, first thermal insulation between the first chamber and the second chamber, and second thermal insulation between the first chamber and an exterior of the housing,
• wherein the self-contained refrigeration system is adapted to:
• pull air from the product compartment into the first chamber through a first opening in the molded housing, cool the air pulled from the product compartment, and return the cooled air to the product compartment through a second opening in the molded housing, such that substantially all air in the first chamber enters and exits the first chamber through the first opening and the second opening, respectively;
• and
• pull air from outside the vending machine into the second chamber through a third opening in the molded housing, transfer heat into the air pulled from outside the vending machine, and return the heated air outside the vending machine through a fourth opening in the molded housing, and
• automatically couple the first opening and the second opening to the product storage compartment when the housing is inserted into the vending machine.