The disclosure relates to a refrigerator which includes a compressor capable of generating cooling capacity for executing at least one of a refrigerating operation and a freezing operation, a temperature sensor capable of sensing an internal temperature of the refrigerator, to which cold air is supplied, at a specific period, in response to at least one of the freezing operation and the refrigerating operation, and a controller capable of calculating a rate of change in the internal temperature using the sensed internal temperature, and controlling the cooling capacity of the compressor based on the calculated rate of change in the internal temperature.

A refrigerator that includes a compressor configured to compress a refrigerant; a condenser configured to condense the refrigerant; a first evaporator that is configured to evaporate the refrigerant, the evaporated refrigerant being configured to cool a refrigerating compartment; a second evaporator that is configured to evaporate the refrigerant, the evaporated refrigerant being configured to cool a freezing compartment; a first heat exchanger; a refrigerating-compartment expansion device that is coupled to the first heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the first heat exchanger; a second heat exchanger coupled to the second evaporator; and a freezing-compartment expansion device that is coupled to the second heat exchanger and that is configured to expand the refrigerant and provide the expanded refrigerant to the second heat exchanger, wherein the first heat exchanger is configured to cool the second heat exchanger is disclosed.

The present invention provides a ternary natural refrigerant mixture containing R-600a (isobutane), R-600 (isobutane), and R-290 (propane) that can be used in single or dual evaporator refrigeration systems to provide for more energy efficient cooling than a single refrigerant such as R-134a without having to change the compressor design, which can add to manufacturing costs. For example, the ternary natural refrigerant mixture can be used in a refrigeration system that uses dual evaporators to provide more efficient cooling. The refrigeration system can be used in, e.g., a refrigerator having a fresh food compartment and a frozen food compartment to provide separate cooling to each compartment simultaneously.

A liquid reservoir assembly for a refrigerating system, a refrigerating system having the same and a freezer are provided. The liquid reservoir assembly for the refrigerating system includes: a liquid reservoir having a gas inlet and a gas outlet; a gas input pipe connected to the gas inlet of the liquid reservoir; a gas output pipe connected to the gas outlet of the liquid reservoir; and a capillary attached to the gas input pipe and/or the gas output pipe, and wound around an outer wall of the liquid reservoir.

An evaporator heat exchanger unit for a heating cooling module for a motor vehicle is disclosed. In one aspect, the evaporator heat exchanger unit includes at least one collector expansion tank for collecting a refrigerant and one evaporator, by which at least a part of the refrigerant can be converted into gaseous form. The evaporator heat exchanger unit also includes a housing enclosing an inner chamber, wherein in the inner chamber, the collector expansion tank, the evaporator, and a cooling medium are arranged, and wherein an expansion organ is arranged on the housing, by which the refrigerant is supplied to the evaporator.

A thermal storage container is coupled to a pump for circulating cooled liquid from the thermal storage container in at least one of two circuits. One circuit includes a heat exchanger coupled to the fresh food evaporator for assisting in cooling the fresh food section of the refrigerator or for chilling the liquid. Another circuit includes a sub-cooler between the condenser and the evaporator for cooling the output from the condenser before entering the evaporator, herby increasing the efficiency of the system. A three-way valve is coupled from the output pump to couple the stored coolant selectively to one or the other or both of the coolant circuits.

A method of operating a refrigeration appliance, comprising the steps: operating a compressor and a valve system to cause refrigerant to flow through a refrigerant circuit to chill an evaporator during a compressor ON-cycle; operating the valve system to direct the refrigerant through a secondary pressure reducing device in response to the initiation of the compressor ON-cycle for a duration that lasts until a nominal operation condition has been reached; operating the valve system during the compressor ON-cycle to direct the refrigerant through a primary pressure reducing device in response to the nominal operation condition; and transferring thermal energy from the primary pressure reducing device to a suction line heat exchanger.

A microchannel condenser includes a first header, the first header including a body defining an interior and further defining an inlet bore and a first outlet bore, and a second header spaced apart from the first header, the second header including a body defining an interior and further defining a second outlet bore. The microchannel condenser further includes a conduit in fluid communication with the second outlet bore. The microchannel condenser further includes a plurality of tubes extending between the first header and the second header, each of the plurality of tubes defining a plurality of microchannels, each of the plurality of microchannels in fluid communication with the interior of the first header and the interior of the second header, each of the plurality of microchannels having a maximum cross-sectional width of less than or equal to 5 millimeters.

The present subject matter provides a sealed system for an appliance. The sealed system includes a compressor operable to generate a flow of compressed refrigerant, an evaporator and a drain trough disposed below the evaporator. A bypass conduit fluidly couples a bypass valve and the evaporator. The bypass valve is configured for selectively directing refrigerant from a condenser around an expansion device to the evaporator. A portion of the bypass conduit is positioned at and connected to the drain trough. A related method for defrosting an evaporator is also provided.

A structure of a suction pipe provided with a capillary tube having a spiral shape being inserted into an inside thereof, capable of easily fixing the capillary tube to the suction pipe, and a refrigerator having the same, the refrigerator including a suction pipe, and a capillary tube having a spiral portion being inserted into the inside the suction pipe, the suction pipe including a first wall making contact with the spiral portion, a second wall making contact with the spiral portion while facing the first wall, and a connecting wall configured to connect the first wall to the second wall while being spaced apart from the spiral portion.