Back to results
US 6,407,530 B1Granted
Device and method for controlling supply of current and static capacitance to compressor
AssigneeLG Electronics Inc.
InventorsSoon Kwang Kwon, Sung Yeob Lim, Gyeong Yeol Noh, Chang Woong An, Kam Gyu Lee
Life of this patent
Estimating the term…
Abstract
A device and method for controlling a supply of a current and a static capacitance to a compressor are disclosed. The device includes a control signal generating part for controlling a current and a static capacitance provided to the compressor, such that the current and static capacitance differ in a starting period of the compressor versus an operative period of the compressor, after the starting period.
Claims67
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a control signal generating part for providing a control signal for controlling the current and the static capacitance provided to the compressor, such that the current and the static capacitance differ between a starting period of the compressor and after the starting period;
- a current controlling part for limiting a current of a utility voltage in supplying current to a main winding in the starting period, and for releasing the limiting of the current of the utility voltage after the starting period, by changing an internal circuit in response to the control signal;
- and,
- a static capacitance controlling part for supplying a starting static from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period, by changing an internal circuit in response to the control signal.
1 more element
A device for controlling a supply of a current and a static capacitance to a compressor compnsing:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off the supplying of, a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a phase control signal and a switching control signal for the utility voltage depending on a size of the utility voltage;
- a current controlling part for changing an internal circuit in response to at least one of the switching control signal and the phase control signal, and for limiting a current of the utility voltage in supplying current to a main winding in a starting period of the compressor and for releasing the limiting of the current of the utility voltage after the starting period;
- and,
- a static capacitance controlling part for changing an internal circuit in response to the switching control signal, and for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period.
3 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off, the supplying of a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a phase control signal and a switching control signal for the utility voltage depending on a size of the utility voltage;
- a current controlling part for changing an internal circuit in response to at least one of the switching control signal and the phase control signal, and limiting a current of the utility voltage in supplying current to a main winding in a starting period of the compressor and for releasing the limiting of the current of the utility voltage after the starting period;
- and,
- a static capacitance controlling part for changing an internal circuit in response to the switching control signal, and for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period, the static capacitance controlling part having an internal function for preventing a surge current caused by a momentary discharge.
3 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off the supplying of a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a phase control signal or a switching control signal for the utility voltage depending on a size of the utility voltage;
- a second switch having one input contact point connected to an output contact point of the first switch, a first output contact point and a second output contact point for connecting the input contact point to one of the two output contact points in response to the switching control signal;
- a current controlling part having an input terminal connected to an output contact point of the first switch, an output terminal connected to an first output contact point of the second switch for limiting a current of the utility voltage in supplying current to a main winding in a starting period of the compressor and for releasing the limiting of the current of the utility voltage after the starting period, according to an operation state of the second switch and the phase control signal;
- and,
- a static capacitance controlling part having a first input terminal connected to an output side of the first switch, a second input terminal connected to the second output contact point of the second switch, and an output terminal connected to the supplementary winding for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period depending on an operation state of the second switch.
4 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off the supplying of, a utility voltage to the compressor in response to the driving turn on/off signal;
- a temperature sensor for sensing an external temperature of the compressor and providing the sensed temperature;
- a second controlling part for generating a phase control signal and a switching control signal for the utility voltage depending on a size and a frequency of the utility voltage, and the external temperature;
- a current controlling part for changing an internal circuit in response to the switching control signal and the phase control signal, and for limiting a current of the utility voltage in supplying current to a main winding in a starting period of the compressor and releasing the limiting of the current of the utility voltage after the starting period;
- and,
- a static capacitance controlling part for changing an internal circuit in response to the switching control signal, and for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period.
4 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off the supplying of, a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a phase control signal and a switching control signal for the utility voltage depending on a size, and providing a display signal relating to a state of current flowing to the main winding;
- a current controlling part for changing an internal circuit in response to at least one of the switching control signal and the phase control signal, and for limiting a current of the utility voltage in supplying current to a main winding in a starting period of the compressor and for releasing the limiting of the current of the utility voltage after the starting period;
- a current detecting part connected to the current controlling part for detecting the current to the main winding;
- a display part for displaying a state of current to the main winding in response to the display signal;
- and,
- a static capacitance controlling part for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period in response to the switching control signal, the static capacitance controlling part having an internal function for preventing a surge current caused by momentary discharge.
5 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying, or cutting off the supplying of a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a phase control signal and a switching control signal, which vary dependent upon a state of current to a main winding of the compressor and a size of the utility voltage, and which are different in a starting period of the compressor and after the starting period;
- a current controlling part for changing an internal circuit in response to at least one of the switching control signal and the phase control signal, and for limiting a current of the utility voltage in supplying current to a main winding in the starting period and for releasing the limiting of the current of the utility voltage after the starting period;
- a current detecting part connected to the current controlling part for detecting the current to the main winding;
- and,
- a static capacitance controlling part for changing an internal circuit in response to the switching control signal, and for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period.
4 more elements
A device for controlling a supply of a current and a static capacitance to a compressor comprising:
- a first controlling part for generating a driving turn on/off signal for the compressor according to a user's selection;
- a first switch for supplying a utility voltage to the compressor in response to the driving turn on/off signal;
- a second controlling part for generating a switching control signal which differs between a starting period of the compressor and after the starting period;
- a current controlling part having variable resistance characteristics reversely proportional to a temperature for changing an internal circuit in response to the switching control signal, to limit a current of the utility voltage in supplying current to a main winding in the starting period and to release the limiting of the current of the utility voltage after the starting period;
- and,
- a static capacitance controlling part for changing an internal circuit in response to the switching control signal, and for supplying a starting static capacitance from the current of the utility voltage to a supplementary winding in the starting period, and for supplying an operative static capacitance after the starting period.
3 more elements
A method for controlling a supply of a current and a static capacitance to a compressor, comprising the steps of:
- (a) limiting a current of a utility voltage in supplying current to a main winding during a starting period of the compressor, and releasing the limiting of the current of the utility voltage after the starting period;
- and,
- (b) providing a starting static capacitance from the current to a supplementary winding during the starting period of the compressor, and providing an operative static capacitance after the starting period.
Dependencies are inferred from the claim text.