A refrigerator operates in a single mode and a dual mode. A plurality of sides defines a storage compartment. At least one door provides access to the storage compartment via an opening in at least one of the sides. At least one outlet vent expels air across the at least one opening towards at least one inlet vent configured to receive at least a portion of the expelled air. A first cooling circuit is fluidly coupled to at least the storage compartment. A second cooling circuit is fluidly coupled to at least one of the outlet vent, the inlet vent, and at least one air screen inlet vent. The refrigerator operates in the single mode when the door is closed during which the first cooling circuit operates. The refrigerator operates in the dual mode when the door is open during which the first cooling circuit and the second cooling circuit operate.

A refrigeration system includes first and second compressors, a condenser, first and second evaporators, and a valve. The first compressor is fluidly connected to first suction and discharge lines. The second compressor is fluidly connected to second suction and discharge lines. The second suction line is fluidly connected to the first discharge line. The condenser receives refrigerant from the second compressor. The first evaporator receives refrigerant from the condenser and discharges refrigerant to the first suction line. The second evaporator receives refrigerant from the condenser and discharges refrigerant to the second suction line. The valve is disposed between the first evaporator and the first suction line. The first suction line receives refrigerant when the valve is in a first position. The second suction line receives refrigerant when the valve is in a second position. The first compressor is bypassed when the valve is in the second position.

A refrigeration system includes first and second compressors and an oil separator. The oil separator includes an inlet for receiving refrigerant and oil from the first compressor, a refrigerant outlet, and an oil outlet. The oil separator separates the oil from the refrigerant. A portion of the oil separator below a horizontal plane intersecting the refrigerant outlet collects separated oil and has a volume equal to a first compressor oil supply. The first compressor oil supply is greater than or equal to 100% and less than or equal to 250% of a first compressor initial oil charge. The first compressor receives oil from the oil outlet when an amount of oil in the portion is less than or equal to the first compressor oil supply. The second compressor receives oil from the refrigerant outlet when the amount of oil in the portion is greater than the first compressor oil supply.

A refrigeration system includes first and second compressors, a condenser, first and second refrigeration cases, and a system controller. The first and second compressors are fluidly connected to respective first and second suction and discharge lines. The second suction line is fluidly connected to the first discharge line. The condenser receives refrigerant from the second compressor. The first and second refrigeration cases operate within respective first and second temperature ranges, the first range being lower than the second range. The first case includes a first evaporator that receives refrigerant from the condenser and discharges refrigerant to the first suction line. The second case includes a second evaporator that receives refrigerant from the condenser and discharges refrigerant to the second suction line. The system controller identifies when maintenance is necessary based on a first discharge temperature of the refrigerant in the first discharge line.

A pan chiller system includes a pan chiller unit having a food well, with a plurality of hollow divider rails arranged within the food well to define at least one opening to receive one or more food pans to be cooled, where the plurality of divider rails define a first rail flow path and a second rail flow path. A chilled liquid coolant system chills liquid coolant and moves the chilled liquid coolant into both the first rail flow path and the second rail flow path. A control arrangement is configured for controlling chilled liquid coolant flow such that a first temperature condition maintained in the first rail flow path is different than a second temperature condition maintained in the second rail flow path.

A refrigeration system and a method eliminate compressor-generated noise within a predetermined interval during operation of the refrigerator system wherein an interior of a refrigerator normally is maintained within a desired cool temperature range by operation of a compressor-driven refrigeration device. A thermo-electric refrigeration device is placed in communication with the interior of the refrigerator for cooling the interior of the refrigerator. A control system is coupled with the compressor-driven refrigeration device and with the thermo-electric refrigeration device, and is configured to discontinue operation of the compressor-driven refrigeration device for the duration of the predetermined interval, and to activate the thermo-electric refrigeration device during the predetermined interval so as to maintain the interior of the refrigerator within the desired cool temperature range, while compressor-generated noise associated with operation of the compressor-driven refrigeration device is discontinued.

A refrigerator includes a main body having a food storage space therein, a door installed on the main body and configured to have an ice compartment therein and to close the food storage space, a compressor, a condenser, and an expansion valve that are installed in the door, and an ice generator installed in the ice compartment. The ice generator includes a tray configured to receive and contain water therein, a refrigerant pipe line configured to connect the compressor, the condenser, and the expansion valve to each other and cool the tray by conduction, and one or more lock rings configured to connect in an airtight fashion the refrigerant pipe line to the compressor, the condenser, and the expansion valve.

A modular container comprising a housing, a contained volume defined within the housing, and a door panel providing access to the contained volume in an open position and preventing access to the contained volume in a closed position. One or more interengagement features can be provided with the container such that a plurality of containers can be stacked atop each other to define a plurality of stacked containers. In some example embodiments, the container comprises at least one fan and one or more lights.

A beverage cooling system includes a main assembly having a refrigeration module, a pumping and control module, and a beverage cooling module. The refrigeration module has a refrigeration system cooling a cooling medium. The beverage cooling module has a cooling tank cooled by the refrigeration system. The pumping and control module has a pump to pump a beverage ingredient cooled by the refrigeration system. Each of the refrigeration module, the pumping and control module, and beverage cooling module are independently removable from and connectable to the remainder of the main assembly.

A multi-purpose retail display merchandising cavity is provided. An insulated case defines an internal product display area. The internal display area can be non-refrigerated and may only use a detachable fan cooling cartridge to maintain the ambient room temperature inside the internal product display area. Alternatively, the cavity can become refrigerated when a detachable refrigerated cooling cartridge is used to refrigerate the internal display area, thus allowing the cabinet to be easily and interchangeably used as either a dry goods cabinet for non-refrigerated goods or as a refrigerator for refrigerated goods.