KR101657228B1 - Apparatus for controlling stand-by power of air conditioner - Google Patents

Apparatus for controlling stand-by power of air conditioner Download PDF

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KR101657228B1
KR101657228B1 KR1020150086397A KR20150086397A KR101657228B1 KR 101657228 B1 KR101657228 B1 KR 101657228B1 KR 1020150086397 A KR1020150086397 A KR 1020150086397A KR 20150086397 A KR20150086397 A KR 20150086397A KR 101657228 B1 KR101657228 B1 KR 101657228B1
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South Korea
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power
contact
unit
switching
air conditioner
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KR1020150086397A
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Korean (ko)
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차길로
강현수
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주식회사 에이디티
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    • F24F11/006—
    • F24F11/02—

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  • Air Conditioning Control Device (AREA)
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Abstract

The present invention relates to a standby power control apparatus for an air conditioner, and more particularly, to a rectifying unit for receiving and rectifying three-phase power. A power factor improving unit connected to an output terminal of the rectifying unit to improve the power factor of the input power source by connecting an inductor L1 and a capacitor C1; And a first contact (CS1) provided between the rectifying part and the power factor improving part for switching the output of the rectifying part and a rush current blocking resistor (R1) connected in series to the first contact (CS1) And a second switching path comprising a switching path and a second contact CS2 connected in parallel to the first switching path to form a bypass path and to switch the output of the rectifying part on the bypass path, part; A light emitting diode (PC1-1) connected in parallel to the capacitor (C1) at an output terminal of the power factor improving unit and detecting an output power of the power factor improving unit (PC1-1); A power supply for receiving power from two phases of the three-phase power source to generate a signal power source; A phototransistor (PC1) which is provided in the input power line of the power supply and constitutes a photocoupler with the power detection LED (PC1-1) and is turned on by the light output of the power detection light emitting diode (PC1-1) -2); A remote control unit for transmitting a control signal for closing the first contact point CS1 according to a normal operation start signal of the air conditioner and transmitting a control signal for opening the first contact point CS1 according to a standby power cutoff signal of the air conditioner, controller; And a control unit which operates in response to power supply of the power supply and controls the second contact (CS2) to be opened by receiving a standby power cutoff signal from the remote controller while closing the second contact (CS2) .
According to the present invention, the circuit is safely protected from the inrush current when switching to the normal operation mode by using the parallel contact switching unit and the photocoupler. In switching to the standby power mode, both the operation power and the signal power are shut off, And it is possible to reduce the cost of the product by eliminating the use of the magnetic switch at the three-phase power input terminal of the air conditioner, and the mode can be switched only by the parallel contact control, so that the maintenance of the circuit is easy and there is no mechanical wear There is an effect that longevity can be made.

Figure R1020150086397

Description

[0001] APPARATUS FOR CONTROLLING STAND-BY POWER OF AIR CONDITIONER [0002]

[0001] The present invention relates to an apparatus for controlling standby power of an air conditioner, and more particularly, to an apparatus for controlling standby power of an air conditioner, more specifically, by switching a standby power mode and a normal operation mode by using a parallel contact switching unit, And more particularly to a standby power control apparatus for an air conditioner that is easy to maintain a switching circuit.

Generally, an air conditioner supplies cold air by compressing a refrigerant into a high-temperature and high-pressure gas and switching a refrigerant flow path to heat-exchange the refrigerant. Generally, the air conditioner is a household electric appliance with high power consumption, because it uses rotating equipment with high power consumption. In recent years, the power consumption of the air conditioner is reduced by using an inverter, and a circuit device for interrupting the standby power in the state that the power is off is inherent.

FIG. 1 illustrates a standby power control apparatus of a conventional air conditioner. 1, a magnetic switch 100 for interrupting a power input is disposed at a three-phase power input terminal, and a rectifying unit 110 composed of a bridge diode is disposed at a rear end of the magnetic switch 100. The power factor improving unit 120 is connected to the output terminal of the rectifying unit 110 to improve the power factor of the input power source by connecting the inductor L1 and the capacitor C1. The output of the power factor improving unit 120 is transmitted to the inverter unit 130. The inverter unit 130 converts the input power into three-phase alternating current power to provide operating power for the air conditioner.

Two phases are drawn out from the output terminal of the magnetic switch 100 and connected to a power supply 140 which generates a signal power. The control unit 150 operates to turn on and off the magnetic switch 100 by receiving power from the power supply 140. When the power of the air conditioner is turned off, the controller 150 cuts off the magnetic switch 100 until the power is turned on again to shut off both the operating power and the signal power supplied to the power supply 140, .

However, the conventional standby power control apparatus as shown in FIG. 1 uses a magnetic switch 100 at a three-phase power input terminal, thereby raising the product cost. In addition, switching for standby power interruption frequently occurs. Mechanical abrasion is generated by using a mechanical switching type magnetic switch 100 here. This causes an arc in the switching operation to make the circuit unstable. Further, there is a problem that maintenance of the magnetic switch 100 is difficult.

Korean Patent Laid-Open No. 10-2005-0055452 discloses a " standby power saving air conditioning system and its operation method ". The preceding document automatically controls the on / off state of the power switch for connecting or disconnecting the circuit between the power cord and the power source according to the driving state of the microcomputer. The prior art has a problem in that a power supply line of one of the input power supply lines is opened and closed, so that a small power consumption is generated even when the power supply switch is opened. Further, the on / off control of the power switch for performing the mechanical switching by the microcomputer does not solve the conventional problems as described above.

Korean Patent Publication No. 10-2005-0055452

The present invention relates to an air conditioner of a new structure which can reduce the cost of a product by eliminating the use of an expensive magnetic switch by switching between a normal operation mode and a standby power mode by using a parallel contact switching unit and a photocoupler, And an object thereof is to provide a standby power control device.

An apparatus for controlling standby power of an air conditioner according to an embodiment of the present invention includes: a rectifying unit for receiving and rectifying three-phase power; A power factor improving unit connected to an output terminal of the rectifying unit to improve the power factor of the input power source by connecting an inductor L1 and a capacitor C1; And a first contact (CS1) provided between the rectifying part and the power factor improving part for switching the output of the rectifying part and a rush current blocking resistor (R1) connected in series to the first contact (CS1) And a second switching path comprising a switching path and a second contact CS2 connected in parallel to the first switching path to form a bypass path and to switch the output of the rectifying part on the bypass path, part; A light emitting diode (PC1-1) connected in parallel to the capacitor (C1) at an output terminal of the power factor improving unit and detecting an output power of the power factor improving unit (PC1-1); A power supply for receiving power from two phases of the three-phase power source to generate a signal power source; A phototransistor (PC1) which is provided in the input power line of the power supply and constitutes a photocoupler with the power detection LED (PC1-1) and is turned on by the light output of the power detection light emitting diode (PC1-1) -2); A remote control unit for transmitting a control signal for closing the first contact point CS1 according to a normal operation start signal of the air conditioner and transmitting a control signal for opening the first contact point CS1 according to a standby power cutoff signal of the air conditioner, controller; And a control unit which operates in response to power supply of the power supply and controls the second contact (CS2) to be opened by receiving a standby power cutoff signal from the remote controller while closing the second contact (CS2) .

The standby power control device of the air conditioner according to another embodiment of the present invention alternately generates the normal operation start signal and the standby power cutoff signal according to a toggle input of a power button provided to the remote controller.

According to the apparatus for controlling the standby power of the air conditioner of the present invention, the circuit is safely protected from the inrush current when switching to the normal operation mode by using the parallel contact switching unit and the photo coupler. In switching to the standby power mode, It is possible to prevent the consumption of standby power by shutting off the power supply. It is possible to reduce the cost of the product by excluding the use of the magnetic switch at the 3-phase power input terminal of the air conditioner and switch the mode by only the parallel contact control. There is no easy and mechanical wear and there is an effect that the life can be lengthened.

1 is a circuit diagram illustrating a standby power control apparatus of a conventional air conditioner, and FIG.
2 is a circuit diagram illustrating an apparatus for controlling standby power of an air conditioner according to the present invention.

Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Parts having similar configurations and operations throughout the specification are denoted by the same reference numerals. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In the following description of the embodiments, redundant descriptions and explanations of techniques obvious to those skilled in the art are omitted. Also, in the following description, when a section is referred to as "comprising " another element, it means that it may further include other elements in addition to the described element unless otherwise specifically stated.

 Also, the terms "to", "to", "to", and "modules" in the specification mean units for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software . In addition, when a part is electrically connected to another part, it includes not only a case directly connected but also a case where the other parts are connected to each other in the middle.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component.

2 is a circuit diagram illustrating an apparatus for controlling standby power of an air conditioner according to the present invention. Referring to FIG. 2, a rectifying unit 210 including a bridge diode is disposed at a three-phase power input terminal, and a parallel contact switching unit 260, a power factor improving unit 220, An inverter unit 230 is disposed.

The power factor improving unit 220 improves the power factor of the input power source by connecting the inductor L1 and the capacitor C1. The inverter unit 230 converts the output of the power factor improving unit 220 into AC to provide operating power for the air conditioner.

The standby power control apparatus of the present invention controls the output power of the rectifier unit 210 and the power factor improving unit 210 in the standby power control apparatus of the present invention in that the standby power control apparatus interrupts the standby power by interrupting the input power by mechanical switching at the three- The contact switching unit 260 is interposed between the input terminals of the parallel contact switching unit 260 and the standby power is interrupted under the control of the parallel contact switching unit 260.

The parallel contact switching unit 260 includes a first switching path and a second switching path connected in parallel to the first switching path to form a bypass path. The first switching path includes a first contact CS1 for switching the output of the rectifying part 210 and an inrush current blocking resistor R1 connected in series to the first contact CS1. The second switching path consists of a second contact (CS2) for switching the output of the rectifying part on the bypass path connected in parallel to the first switching path.

In the first switching path, the inrush current is consumed by the inrush current blocking resistor R1 at the initial stage when the first contact CS1 is closed and the rectified output is supplied, thereby protecting the circuit damage. Then, when the capacitor C1 of the power factor improving unit 220 is charged and the second contact CS2 is closed, the current is bypassed to the second switching path to which the resistance is not connected.

As shown, two phases are drawn from a three phase power input and connected to a power supply 240 which generates a signal power. A control unit 250 which is supplied with power from the power supply 240 and controls the opening and closing of the second contact CS2 of the parallel contact switching unit 260 is operated.

Power supply detecting light emitting diodes PC1-1 and PC2 connected in parallel with the capacitor C1 are connected to the output terminal of the power factor improving unit 220. [ The light emitting diode 270 for detecting the power source is configured to detect the power input to the inverter unit 230, that is, the operation power source of the air conditioner. The light emitting diode 270 includes a phototransistor PC1-2 , 280) and a photocoupler.

That is, when the input power of the inverter unit 230 is not present, the supply of power to the power supply 240 is cut off, so that the signal power supply is also shut off, thereby preventing standby power consumption. When the input power of the inverter unit 230 is generated, the phototransistor 280 is turned on by the light output of the light emitting diode 270 for power detection, and the signal power is supplied to the control unit 250.

The remote controller 290 is a remote control means for generating a normal operation start signal of the air conditioner and a standby power cutoff signal. For example, the normal operation start signal and the standby power cutoff signal are alternately generated by toggling input of the power button provided in the remote controller 290. [ The remote controller 290 transmits a control signal for closing the first contact CS1 of the parallel contact switching unit 260 by the normal operation start signal and makes the first contact CS1 open by the standby power cutoff signal And transmits a control signal. The standby power cutoff signal of the remote controller 290 is also transmitted to the controller 250. [

Hereinafter, the operation of the circuit diagram shown in FIG. 2 will be described.

First, in the standby power cutoff mode, both the contacts CS1 and CS2 of the parallel contact switching unit 260 are in an open state, and power supply to the inverter unit 230 is interrupted. Also, power is not applied to the light emitting diode 270 for power detection, and the phototransistor 280 constituting the photocoupler is in a turned off state. As a result, the power for the signal is also cut off and the standby power is completely cut off.

Thereafter, when the normal operation start signal of the air conditioner is generated in the remote controller 290, the first contact CS1 of the parallel contact switching unit 260 is closed. For example, an unillustrated relay is excited according to a signal of the remote controller 290, and the first contact CS1 is closed by this relay. The capacitor C1 is charged through the first switching path, and when the charging is completed, the phototransistor 280 is turned on by the light output of the light emitting diode 270 for power detection. Then, a signal power source is generated in the power supply 240, and the control unit 250 closes the second contact CS2 of the parallel contact switching unit 260 with the power supply. Thereafter, the output of the rectifying unit 210 is transmitted to the power factor improving unit 220 and the inverter unit 230 through the second switching path. That is, the first switching path is used as a path for waking up the signal power supply, and after the signal power supply is woken up, the operating power is supplied through the second switching path, which is a bypass path, ).

Switching from the normal operation mode to the standby power mode is performed by the signal of the remote controller 290. [ For example, when the remote controller 290 operates the power button to turn off the air conditioner, the standby power cutoff signal is generated. The first contact point CS1 of the parallel contact switching unit 260 is opened by the standby power cutoff signal of the remote controller 290. [ Then, the standby power cutoff signal is transmitted to the controller 250, and the controller 250 opens the second contact CS2. The two contacts of the parallel contact switching unit 260 are both opened, the light emitting diode for power detection 270 is turned off, and the phototransistor 280 is turned off. Therefore, not only the operating power but also the signal power can be completely cut off.

The invention described above is susceptible to various modifications within the scope not impairing the basic idea. In other words, all of the above embodiments should be interpreted by way of example and not by way of limitation. Therefore, the scope of protection of the present invention should be determined in accordance with the appended claims rather than the above-described embodiments, and should be construed as falling within the scope of the present invention when the constituent elements defined in the appended claims are replaced by equivalents.

210: rectifying part 220: power factor improving part
230: Inverter section 240: Power supply
250: control unit 260: parallel contact switching unit
270: Light emitting diode for power detection 280: Phototransistor
290: Remote controller

Claims (2)

A standby power control apparatus for an air conditioner, comprising:
A rectifying unit for receiving and rectifying three-phase power;
A power factor improving unit connected to an output terminal of the rectifying unit to improve the power factor of the input power source by connecting an inductor L1 and a capacitor C1;
And a first contact (CS1) provided between the rectifying part and the power factor improving part for switching the output of the rectifying part and a rush current blocking resistor (R1) connected in series to the first contact (CS1) And a second switching path comprising a switching path and a second contact CS2 connected in parallel to the first switching path to form a bypass path and to switch the output of the rectifying part on the bypass path, part;
A light emitting diode (PC1-1) connected in parallel to the capacitor (C1) at an output terminal of the power factor improving unit and detecting an output power of the power factor improving unit (PC1-1);
A power supply for receiving power from two phases of the three-phase power source to generate a signal power source;
A phototransistor (PC1) which is provided in the input power line of the power supply and constitutes a photocoupler with the power detection LED (PC1-1) and is turned on by the light output of the power detection light emitting diode (PC1-1) -2);
A remote control unit for transmitting a control signal for closing the first contact point CS1 according to a normal operation start signal of the air conditioner and transmitting a control signal for opening the first contact point CS1 according to a standby power cutoff signal of the air conditioner, controller; And
And a control unit for controlling the second contact (CS2) to be opened by receiving the standby power cutoff signal from the remote controller while closing the second contact (CS2) when the power is turned on,
And a controller for controlling the standby power of the air conditioner.
The method according to claim 1,
Wherein the normal operation start signal and the standby power cutoff signal are alternately generated according to a toggle input of a power button provided on the remote controller.
KR1020150086397A 2015-06-18 2015-06-18 Apparatus for controlling stand-by power of air conditioner KR101657228B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109739134A (en) * 2019-01-10 2019-05-10 冠捷显示科技(武汉)有限公司 A kind of TV power supply control system and its control method automatically powered off
US11121566B2 (en) 2017-02-08 2021-09-14 Samsung Sdi Co., Ltd. Power supply and battery pack including same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050055452A (en) 2003-12-08 2005-06-13 엘지전자 주식회사 Power save system of air conditioner and its operating method
JP2010038484A (en) * 2008-08-07 2010-02-18 Fujitsu General Ltd Separate type air conditioner
JP2010054065A (en) * 2008-08-26 2010-03-11 Fujitsu General Ltd Air conditioner
US20120235490A1 (en) * 2011-02-15 2012-09-20 Samsung Electronics Co., Ltd. Electric power supply apparatus of electric apparatus
KR20140096179A (en) * 2011-12-28 2014-08-04 다이킨 고교 가부시키가이샤 Air conditioning device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050055452A (en) 2003-12-08 2005-06-13 엘지전자 주식회사 Power save system of air conditioner and its operating method
JP2010038484A (en) * 2008-08-07 2010-02-18 Fujitsu General Ltd Separate type air conditioner
JP2010054065A (en) * 2008-08-26 2010-03-11 Fujitsu General Ltd Air conditioner
US20120235490A1 (en) * 2011-02-15 2012-09-20 Samsung Electronics Co., Ltd. Electric power supply apparatus of electric apparatus
KR20140096179A (en) * 2011-12-28 2014-08-04 다이킨 고교 가부시키가이샤 Air conditioning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11121566B2 (en) 2017-02-08 2021-09-14 Samsung Sdi Co., Ltd. Power supply and battery pack including same
CN109739134A (en) * 2019-01-10 2019-05-10 冠捷显示科技(武汉)有限公司 A kind of TV power supply control system and its control method automatically powered off
CN109739134B (en) * 2019-01-10 2021-08-10 冠捷显示科技(武汉)有限公司 Automatic power-off television power supply control system and control method thereof

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