Abstract: A refrigerated display case system includes a display case that defines an inner volume; a closed-circuit refrigeration system; and a control system. The closed-circuit refrigeration system includes a compressor; a condenser assembly; and a cooling assembly that includes a cooling coil and an evaporator fan configured to circulate an airflow from the inner volume through the cooling coil to cool the airflow with a liquid phase of a hydrocarbon refrigerant supplied from the condensing unit. The evaporator fan is configured to circulate the cooled airflow to the inner volume to adjust or maintain a temperature of the inner volume. The control system is configured to perform operations including operating the condensing unit and the cooling assembly in a refrigeration cycle to cool the inner volume and a defrost cycle to defrost the cooling assembly; and operating the evaporator fan independent of the refrigeration cycle and the defrost cycle.

Abstract: A refrigeration system includes one or more compressors, a gas cooler/condenser, a receiver tank, one or more evaporators, an expansion valve, a sensor, and a controller. The controller is coupled to the sensor and the expansion valve. The controller receives sensor feedback from the sensor and performs operations, including determining, as a function of the sensor feedback, that a discharge air temperature of an airflow circulated through the one or more evaporators satisfies a discharge air temperature threshold. The discharge air temperature is cooled by the working fluid in the one or more evaporators. The operations also includes controlling, as a function of determining that the discharge air temperature satisfies the discharge air temperature threshold, the expansion valve to maintain or switch a mode of operation of the one or more evaporators. The modes of operation include a first temperature mode and a second temperature mode.

Abstract: Implementations of the present disclosure include an insulated case that includes a first insulated panel and a second insulated panel. The first insulated panel includes a first foam core sandwiched between a first pair of thermally conductive sheets. The first insulated panel includes a first end face. The second insulated panel includes a second end face that is bonded to the first end face by a thermally insulated joint. The thermally insulated joint includes a continuous layer of cured foam and a continuous layer of non-foam sealant. The continuous layer of cured foam is bonded to both the first end face and the second end face extending along a mated length between the first and second end faces. The continuous layer of non-foam sealant is bonded to both the first end face and the second end face and is adjacent to an outer edge of the layer of cured foam.

Abstract: A temperature controlled display device includes a body portion at least partially defining an interior space for storing refrigerated or frozen objects therein. The display device includes a frame coupled to the body portion, where the frame defines at least one opening and a door is coupled thereto for movement between a closed position and open position to permit access to the interior space through the opening. The frame includes two parallel vertical members and two parallel horizontal members. A lighting device is coupled to an interior surface of at least one of the vertical members, to illuminate the interior space. A thermally conductive member is disposed within the vertical member and extends at least partially along the length of the vertical members to transfer heat from the lighting device to an exterior surface of the vertical member.

Abstract: A temperature controlled display device includes a body portion at least partially defining an interior space for storing refrigerated or frozen objects therein. The display device includes a frame coupled to the body portion, where the frame defines at least one opening and a door is coupled thereto for movement between a closed position and open position to permit access to the interior space through the opening. The frame includes two parallel vertical members and two parallel horizontal members. A lighting device is coupled to an interior surface of at least one of the vertical members, to illuminate the interior space. A thermally conductive member is disposed within the vertical member and extends at least partially along the length of the vertical members to transfer heat from the lighting device to an exterior surface of the vertical member.