A refrigerator includes a main body, a damper, a compressor, a condenser, a switchable chamber evaporator, a freezing chamber evaporator, a switchable chamber capillary tube, a bypass capillary tube, a path switching device, a switchable chamber fan, a freezing chamber fan, and a controller. The controller rotates the switchable chamber fan and the freezing chamber fan at different speeds according to satisfaction of a temperature of the switchable chamber, dissatisfaction of the temperature of the switchable chamber, satisfaction of a temperature of the freezing chamber, dissatisfaction of the temperature of the freezing chamber, satisfaction of a temperature of the refrigerating chamber and dissatisfaction of the temperature of the refrigerating chamber.

A dehumidifying system and method for reducing humidity in ambient air is disclosed. The system includes a circulation unit, a refrigeration unit, a condensate receptacle for receiving condensate generated by the refrigeration unit, a controller to control both the circulation and refrigeration units, and wherein the controller receives input from one or more ambient sensors configured to sense ambient conditions, and a user interface configured to receive input from a user. The system implements variable speed control within the circulation and/or refrigeration unit to maximize efficiency or capacity under a current threshold, and enables the system to delay the need for defrost cycling during low temperature operation.

An air volume adjustment device for a refrigerator comprises a fan, a baffle, an operating knob and a potentiometer. The baffle is disposed between a first air inlet cavity of a first compartment and a second air inlet cavity of a second compartment. The baffle is capable of moving among a plurality of positions to adjust the volume of air entering the first air inlet cavity and the second air inlet cavity. The operating knob and the potentiometer are connected to the front side and the rear side of the baffle respectively. The potentiometer is connected to a controller. The operating knob operably drives the baffle to move. The potentiometer transmits an electrical signal corresponding to a position of the baffle to the controller. The controller controls a rotational speed of the fan or controls the compressor to be started up or shut down.

A control method for a refrigerator includes sensing a temperature of a storage room; operating a cool air supply at a cooling power when the sensed temperature of the storage room is equal to or above a first reference temperature; operating the cool air supply at a delay power, which is less than the cooling power, when the sensed temperature of the storage room is equal to or below a second reference temperature, which is less than the first reference temperature while the cool air supply is operating at the cooling power; and adjusting the cooling power or the delay power of the cool air supply according to the temperature of the storage room while the cool air supply is operating at the delay power, and operating the cool air supply at the determined adjusted cooling power or delay power.

Methods and systems for feedback-based load control of a climate control system while in transport are provided. The method can include monitoring a current demand from each of a plurality of DC components of the climate control system. The method can also include determining whether the current demand for two or more of the plurality of DC components is in a discontinuous DC format. Also, the method can include, when two or more of the plurality of DC components is in the discontinuous DC format, determining a synchronization pattern for supplying power to the two or more of the plurality of DC components. Further, the method can include a DC power source of the climate control system directing power to the two or more of the plurality of DC components in the discontinuous DC format based on the synchronization pattern.

An ice making machine may include an ice tray, a drive unit which is provided at one end of the ice tray and is structured to turn the ice tray, a frame body which supports the ice tray and the drive unit, and a cold air duct which connects an opening formed in the frame body with the cold air supply port. The frame body is provided with a wall part which faces the drive unit at the other end of the ice tray and the opening is formed in the wall part. The cold air duct is provided with an inclined flow passage part inclined with respect to a direction where an ice making recessed part in the ice tray is opened, and the inclined flow passage part is provided with a cold air blowing outlet which faces the ice making recessed part.

An ice making machine may include an ice tray, a drive unit that turns the ice tray, a frame body supporting the ice tray and the drive unit, a cold air guide part integrally formed with the frame body, and a cold air duct connecting an opening in the frame body with a cold air supply port. The frame body includes a wall part at an end of the ice tray, the wall part is formed with the opening and the cold air guide part, and the cold air guide part flows cold air through the opening toward the ice tray. The cold air guide part is a frame body side inclined wall and the cold air duct includes a duct side inclined wall facing the frame body side inclined wall and a cold air blowing outlet includes the frame body side inclined wall and the duct side inclined wall.

In an under counter type refrigerator, when a defrosting period arrives, air of a storage compartment may be supplied towards an evaporator to perform a defrosting operation (natural defrosting operation) for removing frost generated on the evaporator, thereby improving defrosting efficiency and reducing power consumption.

A refrigerator appliance, as provided herein, may include a cabinet, a first liner, a second liner, a first fan, a second fan, and a return line. The cabinet may define an evaporator chamber. The first liner may be attached to the cabinet and may define a first chilled chamber having a primary air inlet, a secondary air inlet, and an air outlet. The second liner may be attached to the cabinet and may define a second chilled chamber spaced apart from the first chilled chamber, the second chilled chamber having an air inlet and an air outlet. The return line may extend in fluid communication from the air outlet of the second chilled chamber to the secondary air inlet of the first chilled chamber.

An HVAC system includes a variable-speed compressor which compresses refrigerant flowing through the HVAC system, a blower which provides a flow of air through the HVAC system at a controllable flow rate, and a controller communicatively coupled to the variable-speed compressor and the blower. The controller receives a demand request, which includes a command to operate the HVAC system at a predefined setpoint temperature. In response to receiving the demand request, a setpoint temperature associated with the HVAC system is adjusted to the predefined setpoint temperature. A speed of the variable-speed compressor is decreased to a low-speed setting. Based on the decreased speed of the variable-speed compressor, an air-flow rate is determined to provide by the blower. The controllable flow rate of the flow of air provided by the blower is adjusted based on the determined air-flow rate.