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US 10,502,481 B2Granted
Refrigerator
AssigneeLG Electronics Inc.
InventorsShinhyun Park, Sun Kim, Byoungsuk Choi, Jinseok Hu
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Abstract
A refrigerator according to an embodiment of the present invention includes a power input part through which power is input from a UPS device connected to a commercial power source and an auxiliary power source; a voltage sensor configured to sense a voltage of the power input through the power input part; and a control part configured to analyze a voltage signal sensed by the voltage sensor and to determine whether the input power is commercial power or auxiliary power.
Claims10
A refrigerator comprising:
- a power input part connected to a UPS device which is connected to an auxiliary power source and a commercial power source and selectively supplies power;
- a compressor;
- a voltage sensor configured to sense a voltage input through the power input part;
- and
- a control part configured to analyze a voltage signal sensed by the voltage sensor and to determine whether the input power is commercial power or auxiliary power,
- wherein the control part performs a primary determination through an analysis of the sensed voltage signal, performs a secondary determination through the analysis of the voltage signal sensed before and after driving of the compressor when it is determined that the power is not the auxiliary power, and determines whether the input power is the commercial power or the auxiliary power.
3 more elements
Dependencies are inferred from the claim text.