Patent ID: 11867448
Assignee: LG ELECTRONICS INC.
Field: Other consumer goods (Other fields)
Classification: CPC F | IPC F

Claim 13:
14. A refrigerator comprising:
an inner case including a storage space;
a cooling duct to guide flow of air in the storage space and defining a heat exchange space with the inner case;
an evaporator disposed in the heat exchange space;
a bypass passage recessed from the cooling duct to allow a portion of the air flow to bypass the evaporator;
a sensor including a heat generating element disposed in the bypass passage and a sensing element to detect a temperature of the heat generating element; and
a controller configured to detect residual frost on the evaporator based on a temperature difference between a first detection temperature and a second detection temperature among detection temperatures of the heat generating element after a defrosting operation for the evaporator is completed, wherein the second detection temperature is sensed in response to the turning off after the heat generating element maintained the turning on for sensing the first detection temperature.