Vending Machine External Heat Exchanger

A cooling system for vending machines comprising:

• an outer casing having insulated top, bottom, front, rear and side walls collectively defining an interior vending space containing a plurality of product holding structures;
• an evaporator heat exchange system having a first interiorly mounted portion including a pair of opposing first and second segmented housings each comprised of a complementary shaped inner area shaped to receive tubing there within, the opposing first and second segmented housings being structurally interconnected and collectively supporting a dual walled refrigerant transport tube that is arranged to enter and extend through one shaped area in the first opposing segmented housing and to then exit from an opposite side of that first opposing segmented housing and to then curve and enter an inner area of the second of the opposing segmented housing and to then exit an opposite side of that second opposing segmented housing and then to curve back toward the first opposing segmented housing and into an adjacent shaped inner area with that winding of the dual walled refrigerant tube so as to form a continuous coil thereof along the length of the first interiorly mounted portion by passing back and forth between the inner shaped areas within the opposing segmented housings, the opposing segmented housings each having a heat exchange enhancing exterior;
• the dual walled refrigerant transport tube having an inlet end and an outlet end each extending beyond the first interiorly mounted portion and through the rear wall, and having fittings terminating the outer tube of the dual walled refrigerant transport tube exteriorly of the rear wall beyond which a single walled refrigerant tube extends;
• and a second exteriorly mounted portion including said fittings at the exterior inlet and outlet ends of the dual walled transport tube reforming the dual walled transport tube into said single walled refrigerant tube, a compressor for circulating refrigerant, a condenser coil connected to the single walled refrigerant by which heat is removed from the refrigerant as refrigerant is cycled there through, and an air circulator thereby collectively providing a heat exchange mechanism to cool the vending space.

A cooling system for vending machines comprising:

• an outer casing having insulated top, bottom, front, rear and side walls collectively defining an interior vending space containing a plurality of product holding structures;
• an internal portion comprising an evaporator heat exchanger consisting of first and second blocks each formed from opposing segments, the opposing segments each having an inner portion formed with a plurality of adjacent channels and an exterior portion including fins, the first and second blocks being interconnected and spaced apart, a jointless dual walled refrigerant transport tube arranged to interfit within the plurality of adjacent channels so as to form a continuous coil there within, the dual walled transport tube having an inlet end and an outlet end each extending outwardly beyond an exterior portion of the evaporative heat exchanger and each extending outwardly beyond an exterior portion of the outer casing;
• an external portion located outside of the vending machine including fittings at exterior ends of the dual walled transport tube reforming the dual walled transport tube into a single walled refrigerant transporting tube, a compressor for circulating refrigerant, a condenser coil connected to the single walled refrigerant transporting tube by which heat is removed from the refrigerant as refrigerant is cycled there through, and an air circulator thereby collectively providing a heat exchange mechanism to remove heat from and thereby cool the interior vending space.