Control apparatus for linear compressor
AssigneeLG Electronics Inc.
InventorsChulgi Roh, Jong-Kwon Kim, Jung-Wook Bae, Hee-Dong Kang
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Abstract
The present invention discloses a control apparatus for a linear compressor which can vary a cooling force and prevent an inrush current. The control apparatus for the linear compressor includes a coil winding body laminated on the linear compressor, a first capacitor connected in series to the coil winding body, a capacitance varying unit being formed in a parallel structure to the first capacitor, and having a capacitor switch, and a control unit for inducing an output change of the linear compressor, by varying the whole capacitance of the control apparatus by controlling the capacitor switch.
Claims19
A control apparatus for a linear compressor, comprising:
- a coil winding body laminated on the linear compressor;
- a first capacitor connected in series to the coil winding body;
- a capacitance varying unit being formed in a parallel structure to the first capacitor, and having a capacitor switch;
- a control unit for inducing an output change of the linear compressor, by varying the whole capacitance of the control apparatus by controlling the capacitor switch;
- and
- an on/off switch for supplying power to the coil winding body,
- wherein the control unit operates the on/off switch by turning off the on/off switch in order to prevent inrush current.
A control apparatus for a linear compressor, comprising:
- a coil winding body laminated on the linear compressor;
- a first capacitor connected in series to the coil winding body;
- a capacitance varying unit formed in a parallel structure to the first capacitor;
- a voltage sensing unit for sensing a both end voltage of at least one of the first capacitor and the capacitance varying unit;
- and
- a control unit for inducing an output change of the linear compressor according to a load, by varying the whole capacitance of the control apparatus by controlling the capacitance varying unit according to the voltage sensed by the voltage sensing unit.
A control apparatus for a linear compressor, comprising:
- a coil winding body laminated on the linear compressor;
- a first capacitor connected in series to the coil winding body;
- a capacitance varying unit formed in a parallel structure to the first capacitor;
- a voltage and frequency sensing unit for sensing a voltage and a frequency of applied power;
- and
- a control unit for inducing an output change of the linear compressor by varying the whole capacitance of the control apparatus, by computing a mode voltage by a function of the voltage and the frequency of the applied power from the voltage and frequency sensing unit and controlling the capacitance varying unit according to the mode voltage.
A control apparatus for a linear compressor, comprising:
- a coil winding body laminated on the linear compressor;
- a capacitor connected in series to the coil winding body;
- a constant power supply unit for receiving external power, converting the power into a specific size of constant power, and applying the constant power to the coil winding body;
- and
- a control unit for inducing an output change of the linear compressor according to a load, by controlling the constant power supply unit to supply the specific size of constant power to the coil winding body,
- wherein the constant power supply unit generates the constant power by converting at least one of a voltage and a frequency of the external power into the specific size and an operating frequency by the coil winding body and the capacitor is identical to a natural frequency of the compressor in the maximum output of the linear compressor.
Dependencies are inferred from the claim text.