Automatic defrost technology for refrigeration equipment, in particular, defrosting refrigeration equipment by acceleration defrosting sublimation effects in refrigeration chambers in continual operation below the freezing point of water. Useful for refrigeration equipment for storage of vaccines and other products having storage temperatures ranging from 58 degrees Fahrenheit and 5 degrees Fahrenheit.

A refrigeration appliance contains at least a first and a second temperature zone and a refrigerant circuit that includes a compressor, a first evaporator for cooling the first temperature zone and a second evaporator for cooling the second temperature zone. The first evaporator is serially connected downstream of the second evaporator in the refrigerant circuit, and a controllable throttle point is arranged upstream of the first evaporator and downstream of the second evaporator in the refrigerant circuit. A controller controls the opening degree of the controllable throttle point on the basis of the temperature in the second temperature zone and independently of the temperature in the first temperature zone.

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.

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.

A refrigeration system or a control system for a refrigeration system has a display that by default displays the temperature of a simulated product stored in the refrigeration system as sensed by a temperature probe. The system control logic determines the temperature limits for cutting the refrigeration cycle in or out based on a temperature set-point entered by a user.

A refrigerator includes: a compressor; an evaporator; a main condenser; a dew-prevention pipe; a bypass provided in parallel with a first channel from the main condenser to the dew-prevention pipe, and connected with the evaporator; a switching section provided on a downstream side of the main condenser, in which the switching section opens and closes the first channel, and a second channel from the main condenser to the bypass; and a control section. When defrosting the evaporator, the control section operates in such a manner that a refrigerant staying in the evaporator, the dew-prevention pipe, and the bypass is collected in the main condenser by closing the first channel and the second channel during an operation of the compressor, and thereafter, a high-pressure refrigerant collected in the main condenser is supplied to the evaporator through the bypass by stopping the compressor and opening the second channel.

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 refrigerator including a refrigerator compartment; a freezer compartment; an ice compartment disposed in the refrigerator compartment; an ice maker assembly disposed in the ice compartment, the ice maker assembly including an ice maker tray/evaporator having an evaporator cooling tube which is in direct contact with the ice maker tray portion; an ice bucket for storing ice disposed in the ice compartment; and an air handler/auger motor assembly disposed at a rear portion of the ice compartment behind the ice bucket. The air handler/auger motor assembly includes an air passage having a fan disposed therein. An inlet of the fan communicates with an airflow passage under the ice maker tray/evaporator, such that the fan creates a suction and draws cool air from the ice maker tray/evaporator and discharges the cool air through the air passage and to the ice bucket to prevent any ice in the ice bucket from melting.

A self-chilling food or beverage container including an outer container and a heat exchange unit (HEU) secured internally of said outer container and having liquid carbon dioxide (CO2) therein, the HEU including a valve member which provides a restricted orifice in one position to allow the liquid CO2 to pass from the liquid state directly to the gaseous state while maintaining pressure in the HEU to keep the residual CO2 in the liquid state and in a second position to provide a substantially unrestricted flow path to permit liquid CO2 to be inserted into the HEU.

A no-frost refrigeration appliance has an interior which is divided by a partition into an evaporator chamber and a storage chamber. The evaporator chamber accommodates an evaporator and a defrost heater. The storage chamber is cooled by the evaporator chamber. The partition and the evaporator are mutually independently attached to walls of the interior. The defrost heater is not connected to the evaporator and is fastened to the partition.