A refrigerator includes a main body defining a first cooling space, a door configured to open and close the first cooling space of the main body, a first heat pump module disposed in the main body and configured to cool the first cooling space, an independent refrigerator that is detachably disposed in the first cooling space and defines a second cooling space separate from the first cooling space, a second heat pump module disposed in the independent refrigerator and configured to cool the second cooling space of the independent refrigerator, a main body power supply part that is disposed in the main body and configured to supply power, and an independent power supply part disposed in the independent refrigerator.

A portable refrigerator is configured to be accommodated in a first cooling space of a main refrigerator and defines a second cooling space independent of the first cooling space. The portable refrigerator includes a case that defines an opening, a drawer configured to be inserted into and drawn out from the case through the opening of the case and configured to, based on being inserted into the case, cover the opening and the second cooling space, a temperature control part configured to control a temperature of the second cooling space, a power supply configured to be selectively connected to external power or indirect power, where the indirect power is supplied through the main refrigerator.

A dual-phase refrigeration system for chilled storage containers (CSC) aboard boats maintains cold temperatures in the CSC by chilling the airspace in the upper portion of the CSC. A cooling liquid is circulated through coils installed on an interior sidewall about an upper margin of the CSC. The cooling liquid chills the air in the upper portion of the CSC which creates a thermodynamic airflow within the CSC which aids in cooling. The temperature of the cooling liquid is maintained by a heat exchange with a Non-Ozone Depleting Hydrofluorocarbon (NODHFC) refrigerant which, in turn, is cooled by a heat exchange with circulating water sourced from the body of water supporting the boat. If ice is added to the CSC, the cooling liquid in the coils reduces the air temperature differential across air/ice interface and maintains the quality of the ice.

A hybrid shellfish cooling system employs both DC and AC cooling units that use both solar power and AC electrical supply as energy sources. As temperature control and uniform temperature distribution in the cooling system are critical factors in reducing vibrio growth on raw oysters and reducing energy consumption, the hybrid shellfish cooling system is equipped with a specially configured divider that optimizes airflow through the cooling system interior cabinet to achieve uniform temperature distribution in six individual internal compartments inside of the cooling system. Test results indicated that an average of 130 min. cooling was required to reach the suggested oyster temperatures of 7.2° C. and meet the cooling time requirement (i.e., 10 h or less). Airflow is further optimized via fan location and airflow direction, whereby a circulation fan located on the lower part of the 12-volt DC section with an air supply from the 12-volt DC section to the 110-volt AC section provides the optimal condition to achieve relatively uniform temperature distribution.

A stirrer includes a stirring shaft; a plurality of mixing wings extending from the lower end of the stirring shaft and spaced from each other around the stirring shaft; and a conical hub connecting the lower ends of the mixing wings.

A measuring system for automatically determining and/or monitoring the quality of a liquid or viscous foodstuff, including a housing with an interior space for a product container for the foodstuff, the product container has a product space for the foodstuff and a lid provided with a probe with a thermometer, a heating and cooling device for the interior space, a sensor device for determining a non-temperature quality-related parameter value of the foodstuff, and a control unit designed to control the measuring system, measure, store, process and/or export the measured parameter values, and to control the heating and/or the cooling system according to a desired time-temperature program. The cooling system includes a cold buffer, a cooler for the cold buffer, and a separate refrigerant circuit. The cold buffer includes a buffer holder with a phase-transition material, wherein the refrigerant circuit includes a cooling circuit with a pump.

The present invention is directed to a low-profile refrigerator/freezer. The refrigerator/freezer may comprise a housing, a refrigerator door, a freezer door, divider walls, operator controls, and a refrigeration subsystem. The refrigerator/freezer may be adapted for use by a wheelchair-bound user. The housing may be less than or equal to 38 inches high, less than or equal to 42 inches wide, and less than or equal to 18 inches deep such that the wheelchair-bound user may be able to reach an interior space of the refrigerator/freezer from a wheelchair. A refrigerator compartment and a freezer compartment may be side-by-side such that the refrigerator compartment and the freezer compartment provide the same visibility. The operator controls may be placed within reach of the wheelchair-bound user. The refrigerator/freezer may be mounted on a plurality of caster wheels. Two front wheels may comprise brakes for safety.

Provided is a refrigerator. The refrigerator includes a main body defining a storage space, a cryogenic freezing compartment provided in the storage space, and a thermoelectric module assembly disposed at one side of the cryogenic freezing compartment so that the cryogenic freezing compartment is cooled to a temperature less than that of the storage space. The cryogenic freezing compartment includes a cryogenic case into which an insulation material is filled to be thermally insulated from the storage space and in which a cryogenic freezing space is defined, a case door opening and closing the cryogenic case, and a rail assembly connecting the cryogenic case to the case door and extending and contracted in multi-stages to allow the case door to be slid to be inserted and withdrawn. The rail assembly is mounted on the cryogenic case outside the cryogenic freezing space.

In one aspect, a portable-smart refrigerator includes a lid assembly comprising a lid coupled with a lid bottom cover for fastening the lid assembly to an internal upper portion of a Polypropylene chamber assembly. The portable-smart refrigerator includes a grill assembly comprising a top base, a pump bracket, a middle base, a bottom base. The top based hold the pump bracket. the top base is coupled with the middle base. The middle base is coupled with the bottom base. The portable-smart refrigerator includes a cooling-coil assembly comprising a feeding tube, a top elbow, a bottom tube, a cooling coil. The top elbow is installed between two lengths of tubing/pipe to enable a change of direction and couples the feeding tube with the cooling coil. The cooling coil is coupled with the bottom tube. The portable-smart refrigerator includes the phase change material (PCM) chamber assembly that holds the cooling coil. The polypropylene chamber assembly is placed within an outer cylinder. A bottom portion of the Polypropylene chamber assembly is coupled with the grill assembly. A sleeve assembly forming a portion of the outer cylinder.

A refrigerator includes a main body defining a storage space, a cryogenic freezing compartment having an insulation space that is independent with respect to the storage space, an evaporator disposed inside the storage space to cool the storage space, and a thermoelectric module assembly disposed at one side of the cryogenic freezing compartment so that the cryogenic freezing compartment is cooled to a temperature less than that of the storage space. The thermoelectric module assembly includes a thermoelectric module, a cold sink coming into contact with a heat absorption surface of the thermoelectric module and disposed in the cryogenic freezing compartment, and a heat sink coming into contact with a heat generation surface of the thermoelectric module. The heat sink is cooled by introducing a refrigerant supplied to the evaporator.