A refrigerator includes a compressor configured to compress a refrigerant, a condenser configured to condense the refrigerant compressed in the compressor, an expander configured to depressurize the refrigerant condensed in the condenser, a plurality of evaporators configured to evaporate the refrigerant depressurized in the expander, a first valve configured to be operated to introduce the refrigerant into at least one of the plurality of evaporators, a hot gas valve device disposed at an inlet side of the first valve and configured to guide the refrigerant passed through the compressor or the condenser to the plurality of evaporators, and a hot gas path configured to extend from the hot gas valve device to the plurality of evaporators.

A heat exchanger assembly for a refrigeration device has a condensation pan for receiving condensed water discharged from a cooling compartment of the refrigeration device. The assembly further includes a heat exchanger with a housing, a refrigerant line assembly arranged in an inlet opening of the housing, a fan which is arranged in an outlet opening of the housing, and a sealing plate which projects from the housing and protrudes into the condensation pan.

A refrigerator according to an embodiment of the present disclosure includes: a cabinet forming a storage space; a grill pan assembly provided in the storage space and shielding the evaporator from the front; a machine room forming a space independent of the storage space and having a compressor and a condenser; and an air suction member for communicating the heat exchange space in which the evaporator is disposed and the machine room; in which the grill fan assembly includes a case with the open front; a fan provided in the case and configured to force an air flow between the storage space and the heat exchange space; a grill fan shielding the open front of the case and having a discharge port for discharging cold air to the storage space and a suction port for suctioning air from the storage space; a partition dividing the inside of the case into a cold air flow space and a heated air flow space; an exhaust member extending from the case to the inside of the machine room and communicating the inside of the case with the inside of the machine room; and a machine room exhaust damper provided in the case and configured to open and close the exhaust member.

Cold storage unit apparatuses designed for high energy efficiency are provided, which may include: a refrigeration system; a box enclosing an interior space, the box formed by a plurality of insulated sides; an entry into the interior space including a plurality of openable barriers facilitating preventing entry of heat or moisture into the interior space; and a power system connected to the refrigeration system, the power system facilitating independent operation of the refrigeration system when not connected to a power grid, and further facilitating a net energy use of zero from a power grid when connected to a power grid. Cold storage units may further include systems for using the refrigerant of the refrigeration system to defrost one or more components of the cold storage unit, and for using the refrigerant to facilitate maintaining a desired internal temperature of the interior space of the cold storage unit.

A refrigeration appliance includes a refrigeration circuit having a condenser and a heat circulation system for heating an element of the refrigeration appliance. The heat circulation system includes a heat conducting region. A heat exchanging element includes the condenser and the heat conducting region. The condenser and the heat conducting region in the heat exchanger element are thermally coupled in order to output heat from the refrigeration circuit to the heat conducting region of the heat circulation system.

This refrigeration device is provided with: an evaporator configuring a refrigeration circuit; a cascade condenser configuring the refrigeration circuit; and a thermal insulation board arranged between the evaporator and the cascade condenser.

A refrigerated device is configured to enhance condensate evaporation and includes a compartment including an access door, a refrigeration circuit for cooling the compartment, the refrigeration circuit including an evaporator coil and a condenser with an associated condenser fan, and a condensate pan for capturing condensate from the evaporator coil. At least one first air flow path is provided from a pressure side of the condenser fan, into and along at least part of the condensate pan and then to a suction side of the condenser fan. At least one second air flow path is provided from the pressure side of the condenser fan, into and along at least part the condensate pan and then back to the pressure side of the condenser fan.

A refrigerated device includes a compartment including an access door, and a door sensor for identifying an open condition of the access door. A refrigeration circuit for cooling the compartment includes an evaporator coil with an associated evaporator fan and a condenser with an associated condenser fan. At least one heat source is selectively activatable to provide heat. A controller is configured to selectively activate the heat source based upon an approximated an amount of water that enters the compartment during door open conditions.

A preferred embodiment utilizes the waste heat from a refrigerant cycle to aid in the removal of condensate from a refrigerated case used primarily by grocery stores. Certain embodiments use a heating element to boil off condensate or a pump to remove the condensate. Another embodiment utilizes a wicking element and a shroud that directs hot air from the condenser through the wick thereby increasing the condensate evaporation rate. Yet another embodiment utilizes the hot gas tube from the refrigeration system routed through the bottom of the condensate tray to pre-heat the condensate to accelerate evaporation. Alternative embodiments combine certain features to create even more efficient system such as a heating element used with the wick system or the hot gas system used with the wick system. In some embodiments, a mold and mildew inhibitor is added to the condensate to maintain cleanliness.

A refrigerator includes a compressor configured to compress a refrigerant, a condenser configured to condense the refrigerant compressed in the compressor, an expander configured to depressurize the refrigerant condensed in the condenser, a plurality of evaporators configured to evaporate the refrigerant depressurized in the expander, a first valve configured to be operated to introduce the refrigerant into at least one of the plurality of evaporators, a hot gas valve device disposed at an inlet side of the first valve and configured to guide the refrigerant passed through the compressor or the condenser to the plurality of evaporators, and a hot gas path configured to extend from the hot gas valve device to the plurality of evaporators.