JP2004053149A - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP2004053149A
JP2004053149A JP2002211955A JP2002211955A JP2004053149A JP 2004053149 A JP2004053149 A JP 2004053149A JP 2002211955 A JP2002211955 A JP 2002211955A JP 2002211955 A JP2002211955 A JP 2002211955A JP 2004053149 A JP2004053149 A JP 2004053149A
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JP
Japan
Prior art keywords
solar cell
air conditioner
outdoor unit
indoor
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002211955A
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Japanese (ja)
Inventor
Yasuhiro Makino
Isao Morita
Keigo Onizuka
森田 功
牧野 康弘
鬼塚 圭吾
Original Assignee
Sanyo Electric Air Conditioning Co Ltd
Sanyo Electric Co Ltd
三洋電機株式会社
三洋電機空調株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Air Conditioning Co Ltd, Sanyo Electric Co Ltd, 三洋電機株式会社, 三洋電機空調株式会社 filed Critical Sanyo Electric Air Conditioning Co Ltd
Priority to JP2002211955A priority Critical patent/JP2004053149A/en
Publication of JP2004053149A publication Critical patent/JP2004053149A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/52PV systems with concentrators

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner allowing easy installation of a solar battery for supplying electricity which can be easily installed thereon, and further saving more energy by using the solar battery. <P>SOLUTION: The air conditioner has a double-face light receiving solar battery 42 capable of generating power on both sides of a panel mounted on an outdoor unit 14 so that it can receive direct sunlight X and reflected sunlight Y from the outdoor unit 14. The generated electric power of the solar battery 42 is supplied to a compressor of the outdoor unit 14 and an air fan of an indoor unit 12, which is an element of the air conditioner 10. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner using solar power generation.
[0002]
[Prior art]
In general, solar cells are installed on the roof or roof of buildings, and not only can the power generated by these solar cells be used by one's own, but also surplus power not used by one's own can be supplied to a commercial power system. Power generation devices are known.
[0003]
[Problems to be solved by the invention]
However, when the above-described solar power generation device is used for an air conditioner, if the solar cell supplies power to the entire air conditioner to save energy, a large-capacity solar cell is required, so the area of the solar cell is reduced. It becomes wide and the installation work of the solar cell becomes large.
[0004]
SUMMARY An advantage of some aspects of the invention is to provide an air conditioner that facilitates installation of a solar cell and improves energy saving by the solar cell.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 is an air conditioner that includes an outdoor unit and an indoor unit, and is operated by a commercial power supply. In the air conditioner, a solar cell is attached to the outdoor unit, and a part of the air conditioner includes: It is characterized in that the power generated by the solar cell is supplied.
[0006]
According to a second aspect of the present invention, in the first aspect of the invention, the part of the elements is a blower fan provided in the indoor unit.
[0007]
According to a third aspect of the present invention, in the first aspect of the present invention, the part of the components is a compressor.
[0008]
The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the solar cell is a double-sided light-receiving solar cell capable of generating power on both sides of a panel. The outdoor unit is mounted on the outdoor unit so as to receive the direct sunlight and the reflected light of the sunlight in the outdoor unit.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0010]
FIG. 1 is a refrigerant circuit diagram showing an embodiment of an air conditioner according to the present invention.
[0011]
The air conditioner 10 shown in FIG. 1 includes an indoor unit 12 installed in a room to be air-conditioned and an outdoor unit 14 installed outdoors. The indoor unit 12 and the outdoor unit 14 It is connected by a refrigerant pipe 16A of a pipe and a refrigerant pipe 16B of a thin pipe.
[0012]
The indoor unit 12 is provided with an indoor heat exchanger 18, and one end of each of the refrigerant pipes 16 </ b> A and 16 </ b> B is connected to the indoor heat exchanger 18. An indoor fan 19 serving as a blower fan for blowing air from the indoor heat exchanger 18 into the room is disposed adjacent to the indoor heat exchanger 18. The indoor fan 19 is driven by an indoor fan motor 21 as a blower fan motor. The indoor fan 19 is, for example, a cross flow fan.
[0013]
The other end of the refrigerant pipe 16A is connected to the four-way valve 24 via the valve 20A and the muffler 22A of the outdoor unit 14. The four-way valve 24 is connected to a compressor 26 provided in the outdoor unit 14 via an accumulator 28 and a muffler 22B. Further, the outdoor unit 14 is provided with an outdoor heat exchanger 30. One of the outdoor heat exchangers 30 is connected to the four-way valve 24, and the other is connected to the valve 20B via the capillary tube 32, the strainer 34, and the modulator 38. An electric expansion valve 36 is provided between the strainer 34 and the modulator 38, and the other end of the refrigerant pipe 16B is connected to the valve 20B. Thus, a closed circulation path of the refrigerant forming a refrigeration cycle is formed between the indoor unit 12 and the outdoor unit 14. An outdoor fan 31 that blows outside air (air) to the outdoor heat exchanger 30 is disposed adjacent to the outdoor heat exchanger 30. The outdoor fan 31 is driven by an outdoor fan motor 33. The outdoor fan 31 is, for example, an axial fan (for example, a propeller fan).
[0014]
In the air-conditioning apparatus 10, when the compressor 26 is operated by rotation of a compressor motor 40 provided integrally with the compressor 26, the refrigerant is circulated in the refrigeration cycle. At this time, in the air-conditioning apparatus 10, the four-way valve 24 is switched according to the operation mode (the cooling mode or the heating mode), and the evaporating temperature of the refrigerant is adjusted by controlling the valve opening of the electric expansion valve 36. . In FIG. 1, the arrows indicate the flows of the refrigerant during the heating operation (heating mode) and during the cooling operation (cooling mode or dry mode). The compressor motor 40 is, for example, a brushless DC motor, and the number of revolutions changes according to a change in input voltage.
[0015]
In the cooling mode, the refrigerant compressed by the compressor 26 is liquefied by being supplied to the outdoor heat exchanger 30, and the liquefied refrigerant is vaporized by the indoor heat exchanger 18 of the indoor unit 12, so that the indoor heat The air passing through the exchanger 18 is cooled. In the heating mode, the refrigerant compressed by the compressor 26 radiates heat by being condensed in the indoor heat exchanger 18 of the indoor unit 12, and the heat radiated by the refrigerant causes air passing through the indoor heat exchanger 18. Heat.
[0016]
When performing the blowing operation, the air conditioning operation (that is, the operation of the compressor 26) is stopped, and the indoor fan 19 blows air into the room.
[0017]
The air blowing operation may be an air cleaning operation of removing dust with an air filter or the like (not shown) and blowing air into the room, or a ventilation operation of sucking outside air from a ventilation hole (not shown) and blowing air into the room. Good.
[0018]
In the present embodiment, as shown in FIG. 2, on the upper surface 15 of the outdoor unit 14, a solar cell 42 that absorbs sunlight and converts it into electric energy is arranged. The solar cell 42 is of a panel type.
[0019]
That is, the solar cell 42 is supported and attached to the upper surface 15 of the outdoor unit 14 by the legs 70.
[0020]
The solar cell 42 has substantially the same area as the upper surface 15 of the outdoor unit 14, and has a compressor motor 40 (FIG. 1) of the compressor 26, which is a part of the air conditioner 10, and an indoor fan motor of the indoor fan 19. 21 (FIG. 1), for example, compared to a large-capacity solar cell that supplies power to the entire air-conditioning apparatus installed on the roof of a building or a rooftop. It is of small capacity.
[0021]
In addition, the outdoor unit 14 shall be installed in a place where there is sunshine (for example, on the south side of the building).
[0022]
The solar cell 42 is a double-sided light-receiving solar cell capable of generating power on both sides of the panel. The solar cell 42 has a predetermined angle and a predetermined interval between the solar cell 42 and the upper surface 15 of the outdoor unit 14 so as to be able to receive the direct sunlight X and the reflected light Y of the sunlight on the upper surface 15 of the outdoor unit 14. The length of the leg 70 is set in advance. That is, the solar cell 42 is installed so as to receive the direct sunlight X on one surface (front surface) of the solar cell 42 and receive the reflected light Y on the other surface (back surface). As a result, the reflected light Y on the upper surface 15 of the outdoor unit 14 can be received effectively, so that the amount of power generated by the solar cell 42 is smaller than when the single-sided solar cell is disposed on the upper surface 15 of the outdoor unit 14. As a result, the energy saving by the solar cell 42 can be improved.
[0023]
The predetermined angle and the predetermined interval are preferably set to an angle and an interval at which the amount of light received by the solar cell 42 (that is, the amount of power generation) is maximized. As a result, the amount of power generated by the solar cell 42 further increases, so that the solar cell 42 can further improve energy saving.
[0024]
For example, the predetermined angle and the predetermined interval are determined by the light reception by the solar cell 42 in a high time period of a summer day (for example, about 12:00 to 14:00), that is, in a time period in which the power consumption of the air conditioner 10 is high. The angle and the interval are set so that the amount (that is, the amount of power generation) becomes maximum. This further increases the amount of power generated by the solar cell 42 in a time zone in which the air conditioner 10 is likely to be used, so that the solar cell 42 can further improve energy saving.
[0025]
Further, it is preferable that the solar cell 42 is a solar cell having a light transmitting property. As a result, light transmitted through the solar cell 42 is reflected by the upper surface 15 of the outdoor unit 14 and received by the solar cell 42, and the amount of power generated by the solar cell 42 is further increased. Can be improved.
[0026]
It is preferable that at least the upper surface 15 of the outdoor unit 14 has a paint color (for example, white) or a mirror surface that easily reflects sunlight. Accordingly, the amount of light received by the solar cell 42 is further increased, and the amount of power generated by the solar cell 42 is further increased, so that further energy saving by the solar cell 42 can be improved.
[0027]
The electric power generated by the solar cell 42 is supplied to the compressor 26 (that is, the compressor motor 40) as a part of the air conditioner 10 in the outdoor unit 14 and a part of the air conditioner 10 in the indoor unit 12. Is supplied to the indoor fan 19 (that is, the indoor fan motor 21) as an element.
[0028]
More specifically, as shown in the block diagram of the electric circuit in FIG. 3, the solar cell 42 is connected to one end of a DC / DC converter 46 via a relay 44. The other end of the DC / DC converter 46 is connected to one end of each of the inverter circuits 52 and 54 via the backflow prevention diodes 48 and 50, respectively. The other ends of the inverter circuits 52 and 54 are connected to the compressor motor 40 and the indoor fan motor 21, respectively.
[0029]
A commercial power supply 56 (for example, a commercial power supply of 200 V AC) is connected to one end of each of the inverter circuits 52 and 54 via the relay 58 and each of the full-wave rectifier circuits 60 and 62.
[0030]
The outdoor unit 14 performs overall control, control for turning on / off the DC / DC converter 46, control for turning on / off the relays 44, 58, control for turning on / off the inverter circuits 52, 54, and the like. A control device 64 for performing the control is provided.
[0031]
The DC / DC converter 46 includes a switching element (not shown) and the like, and the DC / DC converter 46 is turned on / off by turning on / off the switching element. When the DC / DC converter 46 is in the ON state, the voltage generated by the solar cell 42 is boosted to supply power to the load (the compressor motor 40 and the indoor fan motor 21). When the DC / DC converter 46 is in the OFF state, the power supply to the load by the solar cell 42 is not performed. The signal for turning on / off the DC / DC converter 46 is output by the control device 64. Assuming that the maximum value of the DC voltage generated by the solar cell 42 is, for example, about 50 [V], the DC / DC converter 46 boosts the voltage from, for example, 200 [V] to about 350 [V].
[0032]
Each of the inverter circuits 52 and 54 includes a plurality of switching elements, converts a DC voltage into a pseudo-sine-wave three-phase AC voltage, and supplies power to a load. By inputting the PWM signal to this switching element, the rotation speed of the compressor motor 40 or the indoor fan motor 21 is controlled. This PWM signal is output by the control device 64.
[0033]
The air-conditioning operation and the stoppage in the various operation modes are performed by operating the operation signal (for example, a signal using infrared rays) transmitted from the remote controller 121 (hereinafter, referred to as “remote controller”) illustrated in FIG. The reception is performed in accordance with the received signal.
[0034]
Hereinafter, the control operation of the control device 64 in FIG. 3 will be described.
[0035]
The control device 64 controls to transmit a PWM signal to the inverter circuit 52 when the compressor motor 40 is operated, and to transmit a PWM signal to the inverter circuit 54 when the indoor fan motor 21 is operated.
[0036]
The controller 64 turns on the relay 58 when supplying electric power from the commercial power supply 56 to the load, and turns on the relay 44 when supplying power generated by the solar cell 42 to the load. Control is performed so that the DC converter 46 is turned on.
[0037]
When an operation signal indicating the blowing operation is transmitted from the remote controller 121 (FIG. 2), that is, when the blowing operation is performed, the control device 64 performs control to turn on the relay 44 and turn off the relay 58. The power supply of the indoor fan motor 21 is performed only by the solar cell 42. At this time, since the operation of the compressor 26 (that is, the compressor motor 40) (that is, the air conditioning operation) is stopped, the indoor fan motor can be operated only with the solar cell 42 without the power supply from the commercial power supply 56. 21 can be driven. The control during the air blowing operation by the control device 64 is performed when there is sunshine, that is, when the electric power generated by the solar cell 42 is equal to or more than a predetermined electric power that can supply the electric power of the indoor fan motor 21. Is When there is little sunshine or when there is no sunshine at night or the like, the relay 58 is turned on, and electric power is supplied to the indoor fan motor 21 by the commercial power supply 56.
[0038]
Further, when an operation signal indicating an air conditioning operation (heating operation, cooling operation or dry operation) is transmitted from the remote controller 121 (FIG. 2), that is, the compressor 26 (that is, the compressor motor 40) is operated. At this time, in order to assist the commercial power supply 56, the control device 64 controls the relay 58 to be ON while the relay 44 is ON. Therefore, the solar cell 42 assists the power supply to the compressor 26 and the indoor fan 19 as some elements, so that the amount of power supplied from the commercial power supply 56 can be reduced.
[0039]
As described above, according to the present embodiment, solar cells 42 having substantially the same area as upper surface 15 of outdoor unit 14 are arranged on upper surface 15 of outdoor unit 14, and some elements of air conditioner 10 (compressor 26 and indoor Since the power generated by the solar cell 42 is supplied to the fan 19), the installation work is such that the small-capacity (small) solar cell 42 is attached to the outdoor unit 14, so that the power of the entire air conditioner is reduced. Compared to installing a large-capacity solar cell on the roof or roof of a building to operate an air conditioner, large-scale installation work is not required, and the solar cell 42 can be easily installed. Thus, the power supply to the load by the commercial power supply 56 is assisted, so that the solar cell 42 can save energy.
[0040]
Further, according to the present embodiment, since the electric power generated by the solar cell is supplied to the compressor 26 (compressor motor 40), it is assumed that the sunshine increases during the cooling operation in summer, for example. As the indoor temperature rises, the power consumed by the compressor 26 increases, and as the sunshine increases, the power generated by the solar cell 42 increases. Thus, the operation of the compressor 26 can be effectively assisted.
[0041]
Further, according to the present embodiment, during the air blowing operation (that is, when the operation of the compressor 26 is stopped), if the generated power is equal to or more than the predetermined power in the solar cell 42, the power supply to the commercial power supply 56 is cut off. Since only the electric power generated by the solar cell 42 is supplied to the indoor fan 19 (the indoor fan motor 21), the electric power of the solar cell 42 can be effectively used in the blowing operation.
[0042]
Further, according to the present embodiment, the solar cell 42 is a double-sided light-receiving solar cell capable of generating electricity on both sides of the panel, and receives the direct sunlight X and the reflected light Y of sunlight in the outdoor unit 14. Since it is attached to the outdoor unit 14 as much as possible, the amount of light received for the reflected light Y increases, and the amount of power generation increases, so that the solar cell 42 can improve energy saving.
[0043]
Note that, in the present embodiment, when the operation is switched to the blowing operation by the remote controller, the electric power generated by the solar cell is supplied to the indoor fan motor of the indoor fan. However, the present invention is not limited to this. When the harmonic operation is stopped, the electric power automatically generated by the solar battery may be supplied to the indoor fan motor of the indoor fan. That is, even if the air-conditioning operation is not selected by the remote controller, if the operation of the air-conditioning apparatus is stopped, the indoor fan is automatically operated to perform the air-blowing operation. In this case, if there is power generation in the solar cell, and the air-conditioning operation of the air-conditioning apparatus is stopped, an automatic blowing operation mode for automatically performing the blowing operation, and a release mode for releasing the automatic blowing operation mode. Is preferably configured to be selectable. When the ventilation operation is the ventilation operation, if the automatic ventilation operation mode is set, the room is automatically ventilated. Abnormal temperature rise can be suppressed. Then, the indoor fan is operated by the electric power generated by the solar cell, which contributes to energy saving. The selection between the automatic blowing operation mode and the release mode can be performed by a remote controller (selection means).
[0044]
Further, in the present embodiment, the indoor fan is driven by the solar cell. However, the present invention is not limited to this. The power generated by the solar cell is not shown to perform indoor ventilation instead of the indoor fan. You may make it supply to a ventilation fan. At this time, if there is power generation by the solar cell and the air conditioning operation of the air conditioner is stopped, an automatic ventilation fan operation mode for automatically operating the ventilation fan, and a release mode for releasing the automatic ventilation fan operation mode. Is preferably configured to be selectable. By this, if the automatic ventilation fan operation mode is selected, the control device controls the ventilation fan to operate automatically, and the room is automatically ventilated. Since the ventilation is performed in the room, abnormal temperature rise in the room can be suppressed. And since the ventilation fan is operated by the electric power generated by the solar cell, it contributes to the improvement of energy saving. The automatic ventilation fan operation mode and the release mode can be selected by a remote controller (selection means).
[0045]
Further, in the present embodiment, the case where an indoor fan (that is, an indoor fan motor) is described as a part of the air-conditioning apparatus is not limited to this. For example, an outdoor fan (that is, an outdoor fan) Fan motor). In this case, the more the sunshine increases, the higher the temperature inside the outdoor unit increases. Therefore, by operating the outdoor fan with the solar battery, an abnormal increase in the temperature inside the outdoor unit can be suppressed. Then, the outdoor fan is operated by the electric power generated by the solar cell, which contributes to energy saving.
[0046]
As described above, the present invention has been described based on the above embodiment, but the present invention is not limited to this.
[0047]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the air conditioner which concerns on this invention, installation of the solar cell which supplies electric power to an air conditioner becomes easy, and the improvement of the energy saving by a solar cell can be aimed at.
[Brief description of the drawings]
FIG. 1 is a refrigerant circuit diagram illustrating an embodiment of an air conditioner.
FIG. 2 is a schematic diagram showing a state where a solar cell is attached to an outdoor unit.
FIG. 3 is a block diagram showing an electric circuit for supplying power to a load by a solar cell.
[Explanation of symbols]
10 air conditioner 12 indoor unit 14 outdoor unit 19 indoor fan (blowing fan)
26 Compressor 42 Solar cell 56 Commercial power supply

Claims (4)

  1. In an air conditioner that includes an outdoor unit and an indoor unit and is operated with a commercial power supply,
    An air conditioner, wherein a solar cell is attached to the outdoor unit, and power generated by the solar cell is supplied to some elements of the air conditioner.
  2. The air conditioner according to claim 1,
    The air conditioner, wherein the partial element is a blower fan provided in the indoor unit.
  3. The air conditioner according to claim 1,
    The air conditioner, wherein the part of the components is a compressor.
  4. The air conditioner according to any one of claims 1 to 3,
    The solar cell is a double-sided light-receiving solar cell capable of generating power on both sides of a panel, and the solar cell is attached to the outdoor unit so as to receive reflected light of direct sunlight and sunlight in the outdoor unit. Air conditioner.
JP2002211955A 2002-07-22 2002-07-22 Air conditioner Pending JP2004053149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002211955A JP2004053149A (en) 2002-07-22 2002-07-22 Air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002211955A JP2004053149A (en) 2002-07-22 2002-07-22 Air conditioner

Publications (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107396A2 (en) * 2003-05-28 2004-12-09 Millan Francisco Paton Double-sided photovoltaic cells
JP2005236126A (en) * 2004-02-20 2005-09-02 Sanyo Air Conditioners Kk Solar power generating system and air conditioner
KR100774609B1 (en) * 2006-08-29 2007-11-12 황재현 Power-saving type air conditioner by utilization of wind velocity
JP2009097777A (en) * 2007-10-16 2009-05-07 Toshiba Carrier Corp Air conditioner
CN103080659A (en) * 2010-08-02 2013-05-01 Lg电子株式会社 Air conditioner with solar cell
KR20190075035A (en) * 2019-06-21 2019-06-28 엘지전자 주식회사 Power input device which can be used both for a ac/dc electric power source
US10951029B2 (en) 2017-09-19 2021-03-16 Lg Electronics Inc. Power source input device for both ac and dc power sources

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004107396A2 (en) * 2003-05-28 2004-12-09 Millan Francisco Paton Double-sided photovoltaic cells
WO2004107396A3 (en) * 2003-05-28 2005-02-17 Millan Francisco Paton Double-sided photovoltaic cells
JP2005236126A (en) * 2004-02-20 2005-09-02 Sanyo Air Conditioners Kk Solar power generating system and air conditioner
KR100774609B1 (en) * 2006-08-29 2007-11-12 황재현 Power-saving type air conditioner by utilization of wind velocity
JP2009097777A (en) * 2007-10-16 2009-05-07 Toshiba Carrier Corp Air conditioner
CN103080659A (en) * 2010-08-02 2013-05-01 Lg电子株式会社 Air conditioner with solar cell
CN103080659B (en) * 2010-08-02 2015-09-30 Lg电子株式会社 There is the air-conditioning of solar cell
US10951029B2 (en) 2017-09-19 2021-03-16 Lg Electronics Inc. Power source input device for both ac and dc power sources
KR20190075035A (en) * 2019-06-21 2019-06-28 엘지전자 주식회사 Power input device which can be used both for a ac/dc electric power source
KR102130382B1 (en) * 2019-06-21 2020-07-06 엘지전자 주식회사 Power input device which can be used both for a ac/dc electric power source

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