A refrigerating and air-conditioning apparatus performs, even during a heating operation under air conditions leading to formation of frost, a defrosting operation while simultaneously continuing the heating operation and improves comfort through heating by securing an appropriate amount of ventilation. A plurality of refrigeration cycles independently performs a heating operation and a defrosting operation. By controlling a ventilation damper of an indoor unit that is to perform a defrosting operation to increase the amount of ventilation, a prior ventilation operation for securing the time-averaged required amount of ventilation including the period in which the defrosting operation is being performed is performed before the defrosting operation, and after the prior ventilation is terminated, the defrosting operation is started.

A heat pump system for a vehicle, which makes refrigerant bypass an external heat exchanger and turns off a fan mounted on the external heat exchanger when temperature of the outdoor air is lower than setting temperature and the vehicle enters into an idle state in a heat pump mode, thereby continuously operating the heat pump mode even in the below zero temperature so as to keep heating performance, reducing consumption of electrical power without needing to operate an electric heater, and preventing excessive noise of a fan when the vehicle enters into an idle state in the below zero temperature.

Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which determines that frosting begins on an exterior heat exchanger and carries out a defrosting control if a difference value between outdoor temperature and refrigerant temperature of an outlet side of the exterior heat exchanger is above a frosting decision temperature in a heat pump mode, thereby increasing frost-prevention and defrosting effects and enhancing heating performance and stability of the system because the system recognizes the beginning of frosting on the exterior heat exchanger at a proper time so as to carry out the defrosting control.

The present disclosure relates to a refrigerator. The refrigerator includes an evaporator, a defrost heater, a temperature sensor to detect an ambient temperature of the evaporator, and controller to control the defrost heater, wherein, in response to a defrosting operation start time point arriving, the controller is configured to perform a defrost operation mode including a pre-defrost cooling mode, a heater operation mode, and post-defrost cooling mode, perform a pulse operation mode in which the defrost heater is repeatedly turned on and off based on the heater operation mode, and change a magnitude of cooling power supplied in the post-defrost cooling mode based on an ON period of the defrost heater or a temperature of a cooling compartment in the pulse operation mode. Accordingly, defrosting efficiency and power consumption may be improved, and cooling power after defrosting may be efficiently supplied.

The present disclosure relates to a refrigerator. According to an embodiment of the present disclosure, the refrigerator comprises: an evaporator; a defrost heater; a temperature sensor to sense a temperature around the evaporator; and a controller to control the defrost heater. In response to reaching a defrost operation starting point, the controller is configured to perform a defrost operation mode, perform a continuous operation mode, in which the defrost heater continuously turns on, and a pulsed operation mode, in which the defrost heater switches between on and off, based on the defrost operation mode, wherein in response to performing the pulsed operation mode, the controller is configured to change the ON duration or power level of the defrost heater. Accordingly, defrosting efficiency may be improved, and power consumption may be reduced.

The present disclosure, in one embodiment, relates to a defrosting apparatus comprising a manifold, wherein the manifold is adapted to expel a liquid onto an evaporator component. The apparatus further comprising one or more cold liquid pipes adapted to deliver the liquid to a container, the container comprising a mechanism for heating the liquid. And the apparatus also comprising one or more heated liquid pipes adapted to deliver the liquid from the container to the manifold. The present disclosure includes a computer with tactile monitor, machine vision, video cameras for inspecting, reporting and acting to defrost the freezer evaporator(s), and WiFi capabilities. Freezer access and inventory tracking is controlled by a second camera built onto the outward facing tactile monitor. Facial, pattern, and voice recognition is built into this device to provide reliable security and inventory control.

Disclosed herein is a heat transfer device (2), the heat transfer device comprising a heat exchanger (10) driven by movement of a fluid, a heat transfer cavity (6) and a fan (12) for creating a circulating gas flow between the heat exchanger and the heat transfer cavity. The heat transfer device (2) includes: a housing having an opening (14) for allowing an object to be inserted into the heat transfer cavity (6); an outlet valve (52) for exhausting gas and/or liquid from the heat transfer cavity (6); and a controller arranged to operate the outlet valve (52). The heat transfer device (2) may, for example, take the form of a cooling device for rapidly cooling a drinking vessel such as a beer glass.

A refrigerating and air-conditioning apparatus performs, even during a heating operation under air conditions leading to formation of frost, a defrosting operation while simultaneously continuing a heating operation and that improves comfort through heating by ensuring an appropriate amount of ventilation. A plurality of refrigeration cycles that are capable of independently performing a heating operation and a defrosting operation, are provided. A ventilation damper of an indoor unit in which a refrigeration cycle that performs a defrosting operation is installed is closed during a defrosting operation, and a ventilation damper of an indoor unit in which a refrigeration cycle that performs a heating operation is installed is controlled to achieve a required amount of ventilation corresponding to the indoor ventilation state.

A system for facilitating communication of information between an information source positioned inside a refrigerated environment and a position outside the refrigerated environment comprising a transmitter for transmitting a signal including the information, a planar antenna fixed to a gasket for resonating the transmitted signal, the gasket providing a seal between the refrigerated compartment and a door providing access to the refrigerated compartment, and a receiver for receiving the signal including the information. The information could include information concerning at least one container positioned in a refrigerated environment. The system may utilize a Wi-Fi device, a Bluetooth® device, RFID device, or other devices for transmitting the information.

The present invention relates to a cooling device comprising a body; a thawing body that is disposed in the body, wherein the frozen foods are placed; a heater that heats the thawing compartment and a sensor that provides the measurement of the humidity of the ambient air of the thawing compartment.