Refrigerated merchandiser including eutectic plate refrigeration

A refrigerated merchandiser comprising:

• a case including a base and a canopy at least partially defining a product display area;
• a eutectic deck plate positioned above the base and including a first housing defining a hollow cavity, a first fluid contained in the first housing, and a first heat exchanger including a first coil positioned in the first housing to cool the first fluid, the first coil having a first inlet extending from the first housing, a first outlet extending from the first housing, a first portion, and a second portion adjacent and in thermal communication with the first portion to define a first tube-to-tube heat exchanger;
• and
• a eutectic shelf plate positioned above the deck plate and including a second housing defining a hollow cavity, a second fluid contained in the second housing, and a second heat exchanger including a second coil positioned in the second housing to cool the second fluid, the second coil having a second inlet extending from the second housing, a second outlet extending from the second housing, a third portion, and a fourth portion adjacent and in thermal communication with the third portion to define a second tube-to-tube heat exchanger,
• wherein the first portion is in direct contact with the second portion inside of the housing.

A refrigeration system for cooling a refrigerated merchandiser comprising:

• a case containing a eutectic plate positioned in a product display area and a temperature sensor connected to the eutectic plate, the eutectic plate including a housing defining a hollow cavity, a fluid contained in the housing, and a heat exchanger including a coil positioned in the housing to cool the fluid, the coil having an inlet, an outlet spaced from the inlet, a serpentine portion extending between the inlet and the outlet, a linear return portion extending adjacent an outer edge of the housing and between the serpentine portion and the outlet, the coil further including a first portion, and a second portion adjacent and in thermal communication with the first portion to define a tube-to-tube heat exchanger, wherein the second portion is positioned between the return portion and the outlet and the temperature sensor is positioned proximate the inlet and outlet;
• a refrigeration system to circulate a refrigerant through the coil;
• and
• a controller in communication with the temperature sensor and the refrigeration system, wherein the controller is configured to activate the refrigeration system in response to a first temperature signal and deactivate the refrigeration system in response to a second temperature signal.