A refrigerator comprises: a cabinet having a refrigerating chamber; a refrigerating chamber evaporator provided to correspond to the refrigerating chamber, and configured to generate cool air by a driving of a compressor; an evaporator temperature sensor mounted to the refrigerating chamber evaporator, and configured to sense a temperature; a blower fan configured to supply cool air generated from the refrigerating chamber evaporator to the refrigerating chamber; and a controller configured to determine whether to stop the blower fan or not, based on a temperature of the refrigerating chamber evaporator sensed by the evaporator temperature sensor when the compressor is stopped.

A method for controlling a refrigerator according to an embodiment of the present invention comprises the steps of: determining whether or not an ultra-low temperature compartment mode is turned on; determining whether or not an ultra-low temperature compartment load-responsive operation input condition is satisfied; and determining whether or not a freezer compartment load-responsive operation input condition is satisfied, wherein if the ultra-low temperature compartment mode is turned on, and the ultra-low temperature compartment load-responsive operation input condition and the freezer compartment load-responsive operation input condition are both satisfied, a corresponding ultra-low temperature compartment load-responsive operation is preferentially performed.

Technologies are provided for preventing a working fluid leak from pooling and thus diluting any leaked working fluid from air within a condenser and/or evaporator compartment of the CCU. This can include a computer-readable medium that stores executable instructions that, upon execution, prevent a working fluid leak from pooling within a climate-control unit (CCU) of a transport climate control system. This also includes detecting fulfillment of activation threshold conditions in connection with the CCU. Also, this includes activating a fan in at least one of a condenser unit and an evaporator unit included in the CCU to dilute leaked working fluid from air within the CCU. Further, this includes detecting fulfillment of de-activation threshold conditions and de-activation of an activated fan.

Disclosed is a refrigerator including a temperature controlled room with improved utilization of space because no component for cooling or heating is positioned inside a temperature controlled room. The refrigerator includes a cabinet; a storage room provided inside the cabinet; a temperature controlled room positioned inside the storage room and being at inside temperature which is independent from inside temperature of the storage room; a cool air flow path guiding cool air generated inside the cabinet to inside of the storage room; a first fan positioned on the cool air flow path to supply the cool air to the storage room; a cool air supplier forming at least one portion of the cool air flow path and including a second fan to supply the cool air to the temperature controlled room; and a heating portion configured to heat air to supply hot air to inside of the temperature controlled room.

The present disclosure relates to an adjustable fluid flow system for a temperature control system having a heat exchanger including a plurality of channels configured to transmit working fluid and direct the working fluid through a selection of two or more channel sections. The adjustable fluid flow system includes a first chamber defining a first flow path that is aligned with a first channel section of the two or more channel sections, wherein the first chamber includes a first outlet in fluid communication with the first flow path, and a second chamber defining a second flow path that is aligned with a second channel section of the two or more channel sections, wherein the second chamber includes a second outlet in fluid communication with the second flow path. The adjustable fluid flow system further includes a damper configured to adjust a flow of air along the first flow path.

Described herein is an electric motor assembly for an environmental control system. The electric motor assembly includes a fan configured to rotate to circulate air within a controlled environment chamber of the environmental control system, and an electric motor coupled to the fan and configured to rotate the fan. The electric motor includes a motor controller configured to receive a braking control signal from a sensor associated with the controlled environment chamber. The braking control signal indicates an entrance to the controlled environment chamber is about to be opened. The motor controller is also configured to initiate braking the electric motor in response to receiving the braking control signal.

A heat pump configured by connecting a circuit including a variable capacity compressor, a condenser, an expansion valve, and an evaporator through a closed refrigerant line, includes a condenser fan, an evaporator fan, a refrigerant amount adjusting means for charging or recovering a refrigerant in or from the circuit, and a controller. Roles of the controller include setting a target pressure inside an outdoor heat exchanger y referring to an outside temperature and a load, setting a target pressure inside an indoor heat exchanger by referring to an inside temperature and a set temperature, setting a target sub-cooling degree and a target super-heating degree, and controlling both of the fans to either adjust temperature or adjust pressure.

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.

A refrigeration system for a temperature-controlled storage device includes a refrigeration circuit, a cooling circuit, and a controller. The refrigeration circuit includes a compressor driven by a brushless DC motor operable at multiple different speeds, a first heat exchanger, an expansion device, and a cooling unit in fluid communication via a first working fluid. The cooling circuit includes a pump and a second heat exchanger in fluid communication with the first heat exchanger via a second working fluid such that the first heat exchanger is liquid-cooled by the second working fluid. The controller operates the brushless DC motor at multiple different speeds to accommodate multiple different thermal loads experienced by the refrigeration system. Each of the speeds corresponds to a different thermal load. The controller modulates the speed of the brushless DC motor to maintain a desired temperature of a temperature-controlled space within the temperature-controlled device.

A method of operating a refrigeration system is provided. The method includes activating an evaporator heater (306), monitoring a pressure differential within the refrigeration system (308), when the pressure differential reaches a predetermined value (310), deactivating the evaporator heater (312), and activating one or more evaporator fans (314), after deactivating the evaporator heater, to cause a thermostatic expansion valve to open.