US Patent 11988442 Refrigerator

A refrigerator includes a cabinet having a storage space and a door to open and close the storage space. The door includes a panel assembly including a front panel, a door frame connected to the panel assembly, a door liner connected to the panel assembly and the door frame and to define an insulating space, in which an insulator is disposed, together with the panel assembly and the door frame, and a sensor module installed on the door frame to sense a knock input applied to the front panel. The door frame includes a front wall that is in contact with the front panel and a rear wall spaced apart from the front wall and configured to define an accommodation space, in which the sensor module is accommodated, together with the front wall.