KR920006273Y1 - Control circuit for compressor - Google Patents

Control circuit for compressor Download PDF

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KR920006273Y1
KR920006273Y1 KR2019900019126U KR900019126U KR920006273Y1 KR 920006273 Y1 KR920006273 Y1 KR 920006273Y1 KR 2019900019126 U KR2019900019126 U KR 2019900019126U KR 900019126 U KR900019126 U KR 900019126U KR 920006273 Y1 KR920006273 Y1 KR 920006273Y1
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South Korea
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compressor
control
output
input power
magnetic switch
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KR2019900019126U
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KR920012402U (en
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노경열
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주식회사 금성사
이헌조
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02Stopping, starting, unloading or idling control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00Testing machines, pumps, or pumping installations

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

내용 없음.No content.

Description

콤퓨레샤의 제어회로Compressor Control Circuit

제1도는 종래의 콤퓨레샤의 제어회로도.1 is a control circuit diagram of a conventional compressor.

제2도는 본 고안에 따른 콤퓨레샤의 제어회로도.2 is a control circuit diagram of a compressor according to the present invention.

제3도의 (a) 및 (b)는 본 고안을 설명하기 위한 파형도.(A) and (b) of FIG. 3 are waveform diagrams for explaining the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 콤퓨레샤 11 : 입력전원검출부1: compressor 11: input power detector

12 : 입력전원비교부 13 : 콤퓨레샤전류검출부12: input power comparison unit 13: compressor current detection unit

14 : 콤퓨레샤전류비교부 15 : 제어신호발생부14: compressor current comparator 15: control signal generator

16 : 중앙처리부 17 : 릴레이구동부16: central processing unit 17: relay drive unit

RY1 : 마그네틱스위치제어릴레이코일 MC1 : 마그네틱스위치 코일RY1: Magnetic switch control relay coil MC1: Magnetic switch coil

본 고안은 콤퓨레샤 제어회로에 관한 것으로, 특히 온도감지에 따라 콤퓨레샤를 제어할때 마그네틱스위치의 채터링을 방지하는데 적당하도록 한 콤퓨레샤 제어회로에 관한 것이다.The present invention relates to a compressor control circuit, and more particularly, to a compressor control circuit suitable for preventing chattering of a magnetic switch when controlling a compressor according to temperature sensing.

종래의 콤퓨레샤 제어회로는 1도에 도시된 바와같이 입력전원(AC)을 온도감지용써모스타트(THs)를 통해서 마그네틱스위치코일(MC1)에 인가되도록 하고, 상기 입력전원(AC)을 상기 마그네틱스위치코일(MC1)의 접점(MC11, MC12)을 통해서 콤퓨레샤(1)에 인가되도록 구성되었다.In the conventional compressor control circuit, the input power source AC is applied to the magnetic switch coil MC1 through the temperature sensing thermostat THs as shown in FIG. 1, and the input power source AC is It is configured to be applied to the compressor 1 through the contacts MC11 and MC12 of the magnetic switch coil MC1.

이와같이 구성된 종래의 콤퓨레샤 제어회로의 작용 및 문제점을 설명하면 다음과 같다.Referring to the operation and problems of the conventional compressor control circuit configured as described above are as follows.

온도감지용써모스타트(THs)가 실내온도를 감지하여 그에 따른 제어를 하는데, 실내온도가 높아지면 그 온도감지용 써모스타트(THs)가 단락되고, 이에따라 마그네틱스위치코일(MC1) 에 전류가 흘러 마그네틱스위치접점(MC11, MC12)이 단락되므로 콤퓨레샤(1)가 입력전원(AC)를 공급받아 운전을 하게 된다. 한편 실내온도가 낮아지면 온도감지용써모스타트(THs)가 개방되어 마그네틱 스위치 접점(MC11, MC12)이 개방되면서 콤퓨레샤(1)는 운전을 정지하게 된다.The temperature sensing thermostat (THs) senses the room temperature and controls it accordingly. When the room temperature rises, the temperature sensing thermostat (THs) is short-circuited. Accordingly, a current flows through the magnetic switch coil (MC1). Since the switch contacts MC11 and MC12 are short-circuited, the compressor 1 is operated by receiving the input power AC. Meanwhile, when the indoor temperature decreases, the temperature sensing thermostat THs is opened to open the magnetic switch contacts MC11 and MC12, and the compressor 1 stops operating.

그러나, 전원전압하강 또는 부품불량 등의 주위조건에 의해 마그네틱스위치코일(MC1)이 오동작을 하게되면, 마그네틱스위치접점(MC11,MC12)의 채터링이 발생하여 콤퓨레샤(1)의 기동전류가 연속적으로 발생하므로, 마그네틱스위치접점(MC11, MC12)의 마모 및 콤퓨레샤(1)에 무리가 가게 되어 수명이 단축된다.However, when the magnetic switch coil MC1 malfunctions due to a power supply voltage drop or an ambient condition such as a defective component, the chattering of the magnetic switch contacts MC11 and MC12 occurs and the starting current of the compressor 1 is increased. Since it occurs continuously, the wear of the magnetic switch contacts MC11 and MC12 and the compressor 1 become excessive, which shortens the life.

본 고안은 이와같은 문제점을 감안하여 전원전압의 변동등에 따라 마그네틱스위치접점의 채터링이 발생되면 콤퓨레샤의 운전을 정지시켜 콤퓨레샤를 보호하기 위한 목적으로, 이를 달성시키고자 입력전원의 변동을 검출하여 일정기준값 이상이면 제어신호를 발생하게 하고, 콤퓨레샤에 공급되는 전류를 검출하여 채터링현상등에 의한 전류상승이 일정기준값이상이면 제어신호를 발생하게 하여 이 두어 제어신호 및 실내온도감지에 따라 중앙처리부에서 콤퓨레샤를 제어하도록 하는 콤퓨레샤 제어회로를 안출한 것으로, 이를 첨부한 도면을 참조해 상세히 설명하면 다음과 같다.In consideration of such a problem, the present invention aims to protect the compressor by stopping the operation of the compressor when the chattering of the magnetic switch contact occurs due to the fluctuation of the power supply voltage. Detects the control signal if it exceeds the predetermined reference value and detects the current supplied to the compressor. If the current rise due to chattering is higher than the predetermined reference value, it generates the control signal. Accordingly, a compressor control circuit for controlling the compressor in the central processing unit is described. Referring to the accompanying drawings, it will be described in detail as follows.

제2도는 본 고안에 따른 콤퓨레샤 제어회로도로서, 이에 도시한 바와같이 입력전원(AC)을 제어릴레이스위치(RYl1)를 통해 마그네틱스위치코일(MC1)에 인가하고. 그 마그네틱스위치접점(MC11, MC12)을 통해서는 콤퓨레샤(1)에 인가되도록 한 후, 상기 입력전원(AC)을 저항(R1), (R2)을 통해 분압후 다이오드(D1)를 통하고, 제너다이오드(ZD1)를 통해 제너전압 이상을 콘덴서(C1)를 통해 평활시켜 출력하는 입력전원검출부(11)와, 그 입력전원검출부(11)의 출력을 연산증폭기(OP1)의 반전입력단자(-)에 인가받고 전원전압(Vcc)을 저항(R6), (R7)을 통해 분압한 기준값에 그 연산증폭기(OP1)의 출력을 저항(R8)을 통해 피드백하여 공통으로 비반전입력단자(+)에 인가하는 그 연산증폭기(OP1)를 통해 상기 입력전원(AC)이 일정값이하일때 제어출력하는 입력전원비교부(12)와, 상기 콤퓨레샤(1)에 인가되는 전류를 전류변류기(CT)를 통해 검출하여 브리지다이오드(B.D)를 통해 정류하고 제너다이오드(ZD2)의 제너전압이상을 콘덴서(C2)를 통해 평활시켜 출력하는 콤퓨레샤전류검출부(13)와, 그 콤퓨레샤전류검출부(13)의 출력은 비반전입력단자(+)에 인가받고 저항(R3), (R4)를 통해 전원전압(Vcc)을 분압한 기준값에 저항(R5)을 통해 출력을 피드백시켜 공통으로 반전입력단자(-)에 인가받는 연산증폭(OP2)를 통해서 상기 콤류레샤(1)의 전류가 일정값이상이면 제어출력하는 콤퓨레샤전류비교부(14)와 그 콤퓨레샤전류비교부(14) 및 사이 입력전원비교부(12)의 출력을 오아게이트(OR1)를 통해조합하여 저항(R9)을 통해서 트랜지스터(Q1)위 베이스에 인가하고, 그 트랜지스터(Q1)의 콜렉터를 통해 제어출력하는 제어신호발생부(15)와, 가변저항(VR)을 통해 기준값을 설정하고 써미스터(TH)를 통해 실내온도감지에 따른 제어 및 상기 제어신호발생부(15)의 출력에 따른 제어출력을 하는 중앙처리부(16)와, 그 중앙처리부(16)의 제어출력에 따라 인버터(I1)를 통해 마그네틱 스위치 제어릴레이코일(RY1)을 구동시켜 그의 스위치(RY11)를 통해 상기 마그네틱스위치코일(MC1)을 제어하도록 하는 릴레이구동부(17)를 포함시켜 구성하였다.2 is a compressor control circuit diagram according to the present invention, and as shown therein, an input power source AC is applied to the magnetic switch coil MC1 through a control relay switch RY1. After the magnetic switch contacts MC11 and MC12 are applied to the compressor 1, the input power AC is divided through the resistors R1 and R2 and then through the diode D1. And an input power detector 11 for smoothing and outputting a zener voltage or more through the Zener diode ZD1 through the capacitor C1, and an inverting input terminal of the operational amplifier OP1. The output of the operational amplifier OP1 is fed back through the resistor R8 to a reference value obtained by applying the power supply voltage Vcc to the resistors R6 and R7 and passing through the resistor R8. The input power comparator 12 for controlling and outputting the input power AC when the input power AC is lower than a predetermined value through the operational amplifier OP1 to be applied to the current transformer 1 and the current applied to the compressor 1. CT is detected through rectification through the bridge diode BD, and the zener voltage abnormality of the zener diode ZD2 is smoothed through the capacitor C2. The compressor current detection unit 13 to output and the output of the compressor current detection unit 13 are applied to the non-inverting input terminal (+) and receive a power supply voltage (Vcc) through the resistors R3 and R4. The compressor which feeds back the output through the resistor R5 to the divided reference value and outputs the control output when the current of the compressor 1 is equal to or greater than a predetermined value through the operational amplification OP2 applied to the inverting input terminal (-). The transistor current comparison unit 14, the compressor current comparison unit 14, and the outputs of the input power comparison unit 12 therebetween are combined through the OR gate OR1 and placed on the transistor Q1 through the resistor R9. The control signal generator 15 is applied to the base and controlled output through the collector of the transistor Q1, the reference value is set through the variable resistor V R , and the control is performed according to the sensing of the room temperature through the thermistor TH. And a central processing unit 16 which performs a control output according to the output of the control signal generating unit 15, and the central processing unit 16 According to a control output, the magnetic switch control relay coil RY1 is driven through the inverter I1 to include a relay driver 17 for controlling the magnetic switch coil MC1 through the switch RY11.

여기서, 도면의 미설명 전원부(18)는 입력전원을 정류하여 일정전원전압(Vcc)으로 본 고안 회로 각부에 공급하는 작용을 한다.Here, the non-explained power supply unit 18 in the drawing serves to rectify the input power supply and supply it to each part of the circuit of the present invention at a constant power supply voltage Vcc.

이와같이 구성한 본 고안의 작용 및 효과를 첨부한 제3도 (a) 및 (b)의 본 고안에 따른 동작설명 파형도를 참조해 설명하면 다음과 같다.Referring to the operation description waveform diagram according to the present invention of Figure 3 (a) and (b) attached to the operation and effect of the present invention configured as described above are as follows.

콤퓨레샤(1)의 구동은 중앙처리부(16)에서 써미스(TH)를 통한 실내온도를 감지함과 아울러 입력전원(AC)및 그 콤퓨레샤(1)에 흐르는 전류에 따라 제어신호발생부(15)에서 발생하는 제어신호를 입력받아 그에따라 릴레이구동부(17)에 제어출력을 하고, 릴레이구동부(17)의 제어에 따라 마그네틱스위치제어릴레이코일(RY1)이 제어되어 그의 스위치(RY11)를 통해 마그네틱스위치코일(MC1)을 제어하게 되고. 이에따라 마그네틱스위치접점(MC11,MC12)을 통해 콤퓨레샤(1)의 구동을 제어하게 된다.The drive of the compressor 1 detects the room temperature through the thermth TH in the central processing unit 16 and generates a control signal according to the input power AC and the current flowing through the compressor 1. The control signal generated from the unit 15 is input to control the relay driver 17 accordingly, and the magnetic switch control relay coil RY1 is controlled by the relay driver 17 to control the switch RY11. By controlling the magnetic switch coil (MC1). Accordingly, the driving of the compressor 1 is controlled through the magnetic switch contacts MC11 and MC12.

만약, 실내온도가 높아지면, 써미스터(TH)를 통해서 중앙처리부(16)가 가변저항(VR)을 통해 설정하는 기준온도이상의 실내온도를 감지함에 따라 릴레이구동부(17)에 구동제어 신호를 출력하고, 이에따라 릴레이구동부(17)가 고전위 출력을 하면 인버터(I1)에서 반전되어 저전위 신호가 마그네틱 스위치 제어릴레이코일(RY1)의 일측에 인가되므로 전원전압(Vcc)이 그 코일(RY2)을 통해 흐르게 되어 그의 스위치(RY11)가 단락된다. 그릴레이스위치(RY11)의 단락에 따라 마그네틱스위치코일(MC1)에 전류가 흐르고, 이에따라 그 마그네틱스위치 접점(MC11,MC12)이 단락되어 콤퓨레샤(1)가 운전된다. 마찬가지 과정으로, 실내온도가 기준온도이하가 되면, 콤퓨레샤(1)의 운전은 정지된다.If the indoor temperature is high, the central processing unit 16 detects the indoor temperature higher than the reference temperature set by the variable resistor VR through the thermistor TH, and outputs a drive control signal to the relay driver 17. Accordingly, when the relay driving unit 17 outputs a high potential, the inverter I1 is inverted and the low potential signal is applied to one side of the magnetic switch control relay coil RY1, so that the power supply voltage Vcc is applied through the coil RY2. And the switch RY11 is short-circuited. The electric current flows in the magnetic switch coil MC1 according to the short circuit of the grille switch RY11. Accordingly, the magnetic switch contacts MC11 and MC12 are short-circuited to operate the compressor 1. In the same process, when the room temperature becomes below the reference temperature, the operation of the compressor 1 is stopped.

한편, 입력전원검출부(11)는 저항(R1), (R2)을 통해 입력전원(AC)을 분합하여 검출하고, 그 검출전압을 다이오드(D1)를 통해 정류하여 제너다이오드(ZD1)를 통해서 그의 제너전압에 따른 일정전압이하를 검출한다.즉, 제너다이오드(ZD1)의 제너전압이상이 콘덴서(C1)에서 평활되어 출력된다. 만약, 입력전원(AC)이 감쇄현상으로 낮아지면 제너전압에 의해 콘덴서(C1)에 충전되는 전위가 낮아져서 입력전원비교부(12)의 연산증폭기(OP1)는 비반전입력단자(+)의 기준값이 더 크게 되어 고전위 제어출력을 하게 되며, 이에따라 제어신호발생부(15)를 통해 중앙처리부(16)에 제어신호를 발생시켜 그에 따라 마그네틱스위치코일(MC1)의 전류를 차단함으로써, 그의 접점(MC11, MC12)이 개방되어 콤퓨레샤(1)의 운전이 정지된다. 또한, 콤퓨레샤(1)의 기동시 제3도의 (a)와 같이 기동시간(T1)의 기동전류가 정상운전시간(T2)의 운전전류보다 훨씬 크기 때문에 입력전원(AC)의 변동에 따라 마그네틱스위치접점(MC11, MC12)의 채터링현상이 발생되면 그 기동전류가 연속해서 콤퓨레샤(13)에 걸리게 된다.On the other hand, the input power detector 11 detects the input power AC by combining the resistors R1 and R2, and rectifies the detected voltage through the diode D1, through the zener diode ZD1. A predetermined voltage or less corresponding to the zener voltage is detected. That is, the zener voltage or higher of the zener diode ZD1 is smoothed and output from the capacitor C1. If the input power AC decreases due to attenuation, the potential charged in the capacitor C1 by the zener voltage is lowered, so that the operational amplifier OP1 of the input power comparator 12 has a reference value of the non-inverting input terminal (+). This becomes larger and becomes a high potential control output, and accordingly generates a control signal to the central processing unit 16 through the control signal generator 15 and accordingly cuts off the current of the magnetic switch coil MC1, thereby making its contact ( MC11 and MC12 are opened, and operation of the compressor 1 is stopped. In addition, since the starting current of the starting time T1 is much larger than the operating current of the normal operating time T2 as shown in FIG. When the chattering phenomenon of the magnetic switch contacts MC11 and MC12 occurs, the starting current is continuously applied to the compressor 13.

이에따라 전류변류기(CT)가 이를 검출하여 브리지다이오드(B.D)를 통해 정류하고, 제너다이오드(ZD2)의 제너전압이상을 콘덴서(C2)를 통해 평활시키므로, 채터링현상에 따라 연산증폭기(OP2)의 비반전입력단자(+)에는 반전입력단자(-)에 인가되는 기준전압보다 높은 전위가 인가되어 고전위 출력을 한다.Accordingly, the current transformer CT detects this and rectifies through the bridge diode BD, and smoothes the zener voltage of the zener diode ZD2 through the capacitor C2. The non-inverting input terminal (+) is applied with a potential higher than the reference voltage applied to the inverting input terminal (−) to generate a high potential output.

따라서, 입력전원(AC)의 감쇄에 따른 변동 및 마그네틱스위치접점(MC11, MC12)의 채터링에 따른 연속되는 콤퓨레샤(1)의 기동전류가 발생되면, 제어신호발생부(15)에서 중앙처리부(16)에 제어신호를 출력하고, 이에따라 그 중앙처리부(16)는 써미스터(TH)의 실내온도감지에 따른 제어보다 우선하여 제어출력을 하므로, 릴레이구동부(17)를 통한 마그네틱스위치제어릴레이코일(RY1)의 전류를 차단시켜 그의 릴레이스위치(RY11)를 오프시키므로, 마그네틱스위치코일(MC1)의 전류가 차단되어 그의 접점(MC11,MC12)이 개방되면서 콤퓨레샤(1)의 운전을 정지시킨다.Therefore, when the start current of the continuous compressor 1 due to the fluctuation due to the attenuation of the input power source AC and the chattering of the magnetic switch contacts MC11 and MC12 is generated, the control signal generator 15 causes the center to be centered. The control signal is output to the processing unit 16, and accordingly, the central processing unit 16 outputs a control output in advance of the control according to the indoor temperature detection of the thermistor TH, so that the magnetic switch control relay coil through the relay driving unit 17 is provided. Since the relay switch RY11 is turned off by cutting off the current of RY1, the current of the magnetic switch coil MC1 is cut off, and the operation of the compressor 1 is stopped while the contacts MC11 and MC12 are opened. .

이상에서 설명한 바와같이 본 고안은 전원전압의 감쇄 등 주위변동에 의해 마그네틱스위치접점의 채터링현상이 발생되는 것을 방지하므로, 그 마그네틱스위치접점이 채터링현상에 의해 스파크등이 발생되어 파손되는 것을 방지함과 아울러 그 채터링 현상에 의해 콤퓨레샤가 파손되는 것을 방지하므로 제품수명의 연장과 안정된 사용에 효과가 있다.As described above, the present invention prevents the chattering of the magnetic switch contact from occurring due to the peripheral fluctuations such as attenuation of the power supply voltage, and thus prevents the magnetic switch contact from being damaged due to the sparking of the chattering phenomenon. In addition, since the compressor is prevented from being damaged by the chattering phenomenon, it is effective in prolonging the product life and using it stably.

Claims (1)

마그네틱스위치접점(MC11, MC12)을 통해 콤퓨레샤(1)의 운전제어를 하는 콤퓨레샤 제어회로에 있어서, 입력전원(AC)이 일정전압이하가 되는 것을 검출하는 입력전원검출부(11)와, 그 입력전원검출부(11)의 출력이 기준전압이하가 될때 제어출력하는 입력전원비교부(12)와, 상기 콤퓨레샤(1)에 공급되는 전류가 일정전류이상이 되는 것을 검출하는 콤퓨레샤전류검출부(13)와, 그 콤퓨레샤전류검출부(13)의 출력이 기준값 이상이 되면 제어출력하는 콤퓨레샤전류비교부(14)와, 그 콤퓨레샤전류비교부(14) 및 상기 입력전원비교부(12)의 출력을 조합하여 제어신호를 발생하는 제어신호발생부(15)와, 가변저항(VR)을 통해서 기준값을 설정한 수 써미스터(TH)를 통해 실내온도감지에 따른 제어출력 및 상기 제어신호발생부(14)의 출력에 따라 상기 콤퓨레샤(1)의 운전제어출력을 하는 중앙처리부(16)와. 그 중앙처리부(16)의 제어에 따라 마그네틱스위치제어릴레이코일(RY1)를 제어하여 그의 릴레이스위치(RY11)를 통해 상기 마그네틱스위치접점(MC11, MC12)을 제어하는 마그네틱스위치코일(MC1)을 제어하도록 하는 마그네트스위치제어릴레이구동부(17)로 구성하여 된 것을 특징으로하는 콤퓨레샤 제어회로.In the compressor control circuit which controls the operation of the compressor 1 through the magnetic switch contacts MC11 and MC12, an input power detection unit 11 for detecting that the input power source AC falls below a constant voltage and And an input power comparator 12 for controlling output when the output of the input power detector 11 is below a reference voltage, and a comparator for detecting that a current supplied to the compressor 1 is greater than or equal to a constant current. When the output of the sha current detector 13, the compressor current detector 13 is equal to or higher than the reference value, the compressor current comparator 14 for controlling output, the compressor current comparator 14, and the The control signal generator 15 generates a control signal by combining the output of the input power comparator 12, and the male thermistor TH sets the reference value through the variable resistor V R according to indoor temperature sensing. Operation control of the compressor 1 in accordance with a control output and the output of the control signal generator 14 The force and the central processing unit 16 to. The magnetic switch control relay coil RY1 is controlled under the control of the central processing unit 16 to control the magnetic switch coil MC1 for controlling the magnetic switch contacts MC11 and MC12 through the relay switch RY11. A compressor control circuit comprising a magnet switch control relay driving unit (17).
KR2019900019126U 1990-12-05 1990-12-05 Control circuit for compressor KR920006273Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200455736Y1 (en) * 2009-09-11 2011-09-21 이우 Control device for portable compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200455736Y1 (en) * 2009-09-11 2011-09-21 이우 Control device for portable compressor

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