The present disclosure relates to a refrigerator. The refrigerator according to an embodiment of the present disclosure includes: a compressor configured to compress a refrigerant; an evaporator configured to perform heat exchange using the refrigerant compressed by the compressor; an RF output device configured to output an RF signal to the evaporator for removing frost on the evaporator; and a controller configured to control the RF output device, wherein the controller is configured to: based on the RF signal, control the frost to phase change into a liquid by heat radiated from a plurality of metal fins of the evaporator; and after the phase change, control temperature of the phase changed liquid to increase by a water molecule movement based on the RF signal. Accordingly, defrosting may be performed using the RF signal.

A refrigerator is provided. The refrigerator includes a plurality of refrigerant flow paths, configured to reduce the drift of the refrigerant. The refrigerator includes a refrigeration cycle including a compressor, a condenser, a plurality of refrigerant flow paths branched at a downstream of the condenser, the plurality of refrigerant flow paths each including a pressure reducing device, and an evaporator connected to the plurality of refrigerant flow paths, and a processor including a switching valve configured to individually switch an open or closed state of each of the plurality of refrigerant flow paths, the processor being configured to adjust a flow rate of refrigerant flowing in each of the plurality of refrigerant flow paths by individually duty-controlling an opening and closing time of each of the plurality of refrigerant flow paths by controlling the switching valve.

A domestic refrigerator has at least one refrigerated cabinet, to which a frost-free evaporator, which can be cooled under control, and a fan, which can be driven independently therefrom, are assigned and which is separated from a freezer compartment by a partition. A control method includes an evaporator cooling phase to cool the frost-free evaporator, which comprises phase the fan is switched off. The refrigerator has a control device, which is designed to cool the frost-free evaporator and to operate the fan. The control device is further configured to run an evaporator cooling phase for cooling the frost-free evaporator when the fan is switched off. The method is particularly advantageous for side-by-side refrigerators.

A dual redundant cooling system for a container is provided. The dual redundant cooling system includes a first cooling unit and a second cooling unit. The first cooling unit is positioned in a first cabinet attached to the container. The first cooling unit includes a first controller operating a first cooling loop to cool an interior of the container. The second cooling unit is positioned in a second cabinet attached to the container and adjacent the first cabinet. The second cooling unit includes a second controller operating a second cooling loop to cool the interior of the container. The first cooling unit and the first cooling loop are separate from the second cooling unit and the second cooling loop. The first controller and the second controller communicate a switch signal between each other so that either the first cooling unit is a primary cooling unit operating the first cooling loop or the second cooling unit is the primary cooling unit operating the second cooling loop. The switch signal switching the primary cooling unit.

The present invention provides a control method of a refrigerator, comprising: a first defrosting step of defrosting an evaporator and terminating the defrosting when the evaporator reaches a first temperature; a step of detecting pressure difference by means of a differential pressure sensor for measuring pressure difference between a first thru-hole, disposed between the evaporator and an inlet through which air flows in from a storage compartment, and a second thru-hole disposed between the evaporator and an outlet through which the air is discharged into the storage compartment; and a second defrosting step of additionally defrosting the evaporator if the measured pressure difference is greater than a configured pressure.

The present disclosure provides a method of controlling a refrigerator that includes a compressor, an evaporator to supply cold air to a storage chamber, a defrosting heater to defrost the evaporator, and a controller to control the defrosting heater. The method includes: operating a cooling cycle for cooling the storage chamber; determining whether a defrosting start condition is satisfied during operation of the cooling cycle; determining whether a defrosting delay condition is satisfied when the defrosting start condition is satisfied; and starting a defrosting operation when the defrosting delay condition is not satisfied, and starting the defrosting operation at a delayed defrosting start time when the defrosting delay condition is satisfied.

Provided are a refrigerator and a cloud server that diagnose a cause of an abnormal state. According to an embodiment of the present disclosure, an abnormal state diagnosis unit included in the refrigerator or the cloud server generates information on the abnormal state of the refrigerator based on similarity between stored first group of information and a normal pattern, and a cause diagnosis unit generates, when the abnormal state diagnosis determines that a state of the refrigerator is an abnormal stte, information on cause of the abnormal state based on similarity between stored second group of information and a defect pattern.

A method for controlling a refrigerator includes: a step for determining whether or not a defrosting initiation condition is satisfied with respect to an evaporator; a step for, if the defrosting initiation condition is satisfied, detecting a pressure differential by means of one differential pressure sensor for measuring the pressure differential between a first through hole, which is positioned between the evaporator and an inlet port having air flowing in from a storage chamber, and a second through hole which is positioned between the evaporator and a discharge port having air discharged to the storage chamber; and a defrosting step for variably defrosting in accordance with the measured pressure differential.

A dual redundant cooling system for a container is provided. The dual redundant cooling system includes a first cooling unit and a second cooling unit. The first cooling unit is positioned in a first cabinet attached to the container. The first cooling unit includes a first controller operating a first cooling loop to cool an interior of the container. The second cooling unit is positioned in a second cabinet attached to the container and adjacent the first cabinet. The second cooling unit includes a second controller operating a second cooling loop to cool the interior of the container. The first cooling unit and the first cooling loop are separate from the second cooling unit and the second cooling loop. The first controller and the second controller communicate a switch signal between each other so that either the first cooling unit is a primary cooling unit operating the first cooling loop or the second cooling unit is the primary cooling unit operating the second cooling loop. The switch signal switching the primary cooling unit.

A method to manage defrosting of a refrigeration plant provided with at least one compressor and at least one evaporator, including defining a plurality of defrosting modes, which can be selected by the manufacturer and/or by the end user, which are based on one or more functioning parameters of the refrigeration plant; such functioning parameters are detected by detection probes provided in the refrigeration plant such as pressure switches, thermostats, timing devices or other, associated with the compressor and/or the evaporator, or other; and memorizing the plurality of defrosting modes in an electronic device to manage the defrosting.