Lg Electronics Inc.

Youngdoo Kim

Jinseok Hu

Namhun Kim

Heesun Kim

A linear compressor includes a cylinder, a piston, a linear motor configured to drive the piston, a current detection unit configured to sense a current in the linear motor, a relay configured to change an operation mode of the linear motor, and a control unit configured to set at least one parameter for determining a stroke of the piston according to the operation mode. The control unit is configured to: determine a first magnitude of a first current in the linear motor based on a state of the relay being in a first state, determine a second magnitude of a second current in the linear motor based on the relay being switched to a second state from the first state, compare the first magnitude to the second magnitude, and based on the comparison of the first magnitude to the second magnitude, determine whether the relay fails to operate.

Linear compressor and method for controlling linear compressor

A refrigerator and a method of control thereof, whereby after driving of a compressor and a blower fan is stopped as temperatures of a refrigeration compartment and a freezer compartment are in a satisfactory state, opening/closing operations of a damper are repeatedly performed, so that cold air in the freezer compartment is supplied into the refrigeration compartment. Alternatively, if the temperature of the refrigeration compartment reaches an upper limit temperature, the repeated opening/closing operations of the damper are started. The repeated opening/closing operations of the damper are performed until the temperature of the refrigeration compartment reaches a lower limit temperature, so that a cooling operation of the refrigeration compartment is performed only once while the compressor is being driven.

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Seoul, South Korea

Youngdoo Kim