Abstract: Disclosed are a cooking apparatus and a method of controlling the same. The cooking apparatus includes a plurality of light sources configured to emit light toward a cooking container and grouped into a plurality of groups and a light emission driving controller configured to perform control in a manner that flame images are displayed by performing group controlling on the basis of at least one of a control command input by a user, a grouping form of the plurality of groups and a preset operation pattern.

Abstract: Disclosed are a cooking apparatus and a method of controlling the same. The cooking apparatus includes a plurality of light sources configured to emit light toward a cooking container and grouped into a plurality of groups and a light emission driving controller configured to perform control in a manner that flame images are displayed by performing group controlling on the basis of at least one of a control command input by a user, a grouping form of the plurality of groups and a preset operation pattern.

Abstract: A power supply circuit to detect whether or not abnormal current is generated in a power factor compensation circuit and forcibly stop an operation of an interleaved power factor compensation circuit controller if abnormal current is generated. The power supply circuit includes a rectifier, a power factor compensation circuit including a plurality of reactors, a plurality of switches and a plurality of current detectors, a power factor compensation circuit controller to control switching of the switches and to control a power factor compensation operation, and a power factor compensation circuit protection circuit to receive the voltages output from the plurality of current detectors and to stop the operation of the power factor compensation circuit controller if at least one of the voltages output from the plurality of current detectors is abnormal. Thus, it is possible to prevent failure of the switches and the current detectors due to abnormal current.

Abstract: A device correcting a power factor caused by an input current delay of a three-phase inverter and a method of controlling the same are disclosed. In case of a product having a high-current power environment and a high-capacity inverter, a three-phase power factor correction (PFC) device detects any erroneous PFC operation of the three-phase inverter using a current sensor located at a common potential terminal. So, if the input current delay occurs, the three-phase PFC device delays an ON time of a switching element from a zero-crossing point of the input voltage, and performs an optimum switching operation caused by the input-current delay, resulting in the implementation of an increased power factor.

Abstract: A power factor correction (PFC) protection device used when an abnormal current of a three-phase inverter occurs and a method of controlling the same are disclosed. If any mis-connection (or non-connection) occurs due to a mistake of a producer at a power-supply input terminal applied to the reactor and the switching element, a current applied to the switching element becomes an abnormal current, such that the PFC cannot be controlled. During the PFC control, the device detects a current waveform generated from the switching element at a current sensor of the common potential terminal, and determines whether there is a mis-connection caused by the abnormal current. If the mis-connection is decided, the device compares a current pattern with a mis-connection pattern, and changes the PFC control output applied to the switching element according to the searched mis-connection pattern, such that the PFC control can be normally carried out.

Abstract: A power supply circuit to detect whether or not abnormal current is generated in a power factor compensation circuit and forcibly stop an operation of an interleaved power factor compensation circuit controller if abnormal current is generated. The power supply circuit includes a rectifier, a power factor compensation circuit including a plurality of reactors, a plurality of switches and a plurality of current detectors, a power factor compensation circuit controller to control switching of the switches and to control a power factor compensation operation, and a power factor compensation circuit protection circuit to receive the voltages output from the plurality of current detectors and to stop the operation of the power factor compensation circuit controller if at least one of the voltages output from the plurality of current detectors is abnormal. Thus, it is possible to prevent failure of the switches and the current detectors due to abnormal current.

Abstract: A power factor correction (PFC) protection device used when an abnormal current of a three-phase inverter occurs and a method of controlling the same are disclosed. If any mis-connection (or non-connection) occurs due to a mistake of a producer at a power-supply input terminal applied to the reactor and the switching element, a current applied to the switching element becomes an abnormal current, such that the PFC cannot be controlled. During the PFC control, the device detects a current waveform generated from the switching element at a current sensor of the common potential terminal, and determines whether there is a mis-connection caused by the abnormal current. If the mis-connection is decided, the device compares a current pattern with a mis-connection pattern, and changes the PFC control output applied to the switching element according to the searched mis-connection pattern, such that the PFC control can be normally carried out.

Abstract: A device correcting a power factor caused by an input current delay of a three-phase inverter and a method of controlling the same are disclosed. In case of a product having a high-current power environment and a high-capacity inverter, a three-phase power factor correction (PFC) device detects any erroneous PFC operation of the three-phase inverter using a current sensor located at a common potential terminal. So, if the input current delay occurs, the three-phase PFC device delays an ON time of a switching element from a zero-crossing point of the input voltage, and performs an optimum switching operation caused by the input-current delay, resulting in the implementation of an increased power factor.

Abstract: A muffler for a hermetic rotary compressor including a muffler body forming a plurality of noise reducing spaces in which refrigerant gas flows; a discharge port formed on the muffler body so as to be located on the nose reducing spaces side; and a guide cover coupled to an inner wall of the muffler body in radial direction for guiding the refrigerant gas flowing in the noise reducing spaces to be discharged to the discharge port, and therefore the noise generated during the discharge of the compressed refrigerant gas to inside a sealed chamber, and a flow resistance for the discharged refrigerant gas is reduced, whereby the electric power consumption is reduced, and the structure and assembling processes can be simplified.

Abstract: A chamber (10) for a compressor is disclosed in which at least one portion has a multi-layer structure (11) and plates having the multi-layer structure are tightly attached to thereby reduce noise and vibration by virtue of mutual frictional force. Vibration energy is transformed to thermal energy according to friction and transmitted externally through the chamber (10) during the operation of the compressor. Thus, noise and vibration generated during the operation of the compressor can be considerably reduced.

Abstract: Disclosed herein is an air conditioning unit and method of operating the same. The air conditioning unit has a power level control unit (6) for controlling the level of power supplied to a motor (2a) of a compressor. The power level control unit (6) is comprised of a first supplying unit (6a) for supplying first level power to the compressor motor (2a), and a second supplying unit (6b) for supplying second level power to the compressor motor (2a). If an operation cycle of the compressor corresponds to a loading operation, the power level control unit (6) supplies first level power for compressing a cooling agent through the first supplying unit (6a). Further, if an operation cycle of the compressor corresponds to an unloading operation, the power level control unit (6) supplies second level power less than the first level power through the second supplying unit (6b).

Abstract: An air conditioner and a method of controlling the air conditioner are disclosed. It is an aspect of the present invention to provide an air conditioner and a method of controlling the air conditioner, which is capable of improving a structure to supply stable power, and effectively reset an outdoor unit and at least one indoor unit, in a multi-unit type air conditioner that is operated with the plurality of indoor units connected to the outdoor unit through a communication line. The air conditioner further includes reset control units, which are provided on the outdoor unit and the at least one indoor unit, respectively, to receive a reset signal transmitted through the communication line and to reset the outdoor unit or the at least one indoor unit.

Abstract: A muffler for a hermetic rotary compressor comprises: a muffler body (100) forming a plurality of noise reducing spaces (140) in which refrigerant gas flows; a discharge port (110) formed on the muffler body (100) so as to be located on the nose reducing spaces side; and a guide cover (200) coupled to an inner wall of the muffler body in radial direction for guiding the refrigerant gas flowing in the noise reducing spaces to be discharged to the discharge port (110), and therefore the noise generated during the discharge of the compressed refrigerant gas to inside a sealed chamber, and a flow resistance for the discharged refrigerant gas is reduced, whereby the electric power consumption is reduced, and the structure and assembling processes can be simplified.

Abstract: Disclosed herein is an air conditioning unit and method of operating the same. The air conditioning unit has a power level control unit (6) for controlling the level of power supplied to a motor (2a) of a compressor. The power level control unit (6) is comprised of a first supplying unit (6a) for supplying first level power to the compressor motor (2a), and a second supplying unit (6b) for supplying second level power to the compressor motor (2a). If an operation cycle of the compressor corresponds to a loading operation, the power level control unit (6) supplies first level power for compressing a cooling agent through the first supplying unit (6a). Further, if an operation cycle of the compressor corresponds to an unloading operation, the power level control unit (6) supplies second level power less than the first level power through the second supplying unit (6b).

Abstract: A discharge part structure of a compressor is disclosed. In the compressor comprising a cylinder assembly having a suction flow path and a discharge flow path, a Z-plate in the cylinder assembly for dividing an inner space into a plurality of compression spaces and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit, and vanes contacted to both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by reciprocation, an oil filtering space or a buffering space having a predetermined volume is formed at an outer side of a discharge flow path of the cylinder assembly. According to this, oil mixed with a fluid can be efficiently separated when the fluid is discharged, and vibration noise can be minimized.

Abstract: A discharge part structure of a compressor is disclosed. In the compressor comprising a cylinder assembly having a suction flow path and a discharge flow path, a Z-plate in the cylinder assembly for dividing an inner space into a plurality of compression spaces and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit, and vanes contacted to both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by reciprocation, an oil filtering space or a buffering space having a predetermined volume is formed at an outer side of a discharge flow path of the cylinder assembly. According to this, oil mixed with a fluid can be efficiently separated when the fluid is discharged, and vibration noise can be minimized.

Abstract: A compressor having a vibration reducing structure comprising: a hermetic container having a suction pipe and a discharge pipe communicated thereto, a driving force generating means located in the hermetic container for generating a driving force, a compression unit for compressing gas by receiving the driving force from the driving force generating means; and an accumulator arranged at one side of the hermetic container and connected to one side of the suction pipe for filtering gas, wherein the suction pipe is provided with a vibration preventing means which absorbs vibration so as to prevent vibration generated at the compression unit from being transmitted to the accumulator through the suction pipe, thereby reducing noise due to the vibration and increasing a reliability of the compressor.

Abstract: A cylinder assembly of a compressor includes: a cylinder having a cylindrical inner space partitioned into a first space and a second space as partition plate of a rotational shaft is inserted thereinto and a step insertion portion formed at both sides thereof in a ring shape; a first bearing having the rotational shaft coupled at a central portion and being inserted to be coupled into the step insertion portion formed at one side of the cylinder so as to cover the inner space of the cylinder; and a second bearing having the rotational shaft coupled at the central portion thereof and being inserted to be coupled into the step insertion portion formed at the other side of the cylinder so as to cover the inner space of the cylinder. A dead volume is reduced and thus a re-expansion loss of a refrigerant gas can be reduced.

Abstract: A compressor including a cylinder assembly having a compression space through which suction passages and discharge passages are connected, a rotation driving unit inserted into the compression space of the cylinder assembly to transfer a rotation force, a slant compression slanted plate installed in the compression space to divide the compression space into at least two parts and rotating by being connected to the rotation driving unit, and vane units attached on both sides of the slant compression plate to classify the partitioned compression space into a suction space and a compression. With this construction, a vibration and a noise can be reduced and a stable driving force can be obtained even with a relatively small capacity electric motor. In addition, since fluid can be compressed and discharged simultaneously in both sides of the slant compression plate, an excellent compression performance can be accomplished in a simple structure.