KR970000098Y1 - Panel heater - Google Patents

Panel heater Download PDF

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Publication number
KR970000098Y1
KR970000098Y1 KR2019910012387U KR910012387U KR970000098Y1 KR 970000098 Y1 KR970000098 Y1 KR 970000098Y1 KR 2019910012387 U KR2019910012387 U KR 2019910012387U KR 910012387 U KR910012387 U KR 910012387U KR 970000098 Y1 KR970000098 Y1 KR 970000098Y1
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South Korea
Prior art keywords
temperature
heating panel
terminal
integrated circuit
voltage
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KR2019910012387U
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Korean (ko)
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KR930005899U (en
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이영화
이영세
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이영화
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/0019Circuit arrangements
    • H05B3/0023Circuit arrangements for heating by passing the current directly across the material to be heated
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202Switches
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/026Heaters specially adapted for floor heating
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/04Heating plates with overheat protection means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07Heating plates with temperature control means

Abstract

내용 없음.No content.

Description

온도감지기와 전자스윗치를 구비한 난방용 판넬Heating panel with temperature sensor and electronic switch

제1도는 본 고안의 온도조절기 회로도면.1 is a circuit diagram of a thermostat according to the present invention.

제2도는 본 고안의 난방용판넬에 대한 회로도면.2 is a circuit diagram of a heating panel of the present invention.

제3도는 전자스윗치 모듈의 실체도.3 is an actual diagram of an electronic switch module.

제4도는 난방용판넬의 실체도.4 is a substantial diagram of a heating panel.

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

PL1 : 전원프러그 SW1, SW2 : 스윗치PL1: Power plug SW1, SW2: Switch

F1, F2 : 휴우즈 T1 : 트랜스F1, F2: fuse T1: trance

D1 : 브릿지 다이오드 C1 : 콘덴서D1: bridge diode C1: condenser

R1-R8 : 저항 LED1 : 발광다이오드R1-R8: Resistor LED1: Light Emitting Diode

ZD1-ZD3 : 정전압제너다이오드 IC1-IC3 : 직접회로ZD1-ZD3: Constant Voltage Zener Diode IC1-IC3: Integrated Circuit

VR1, VR2 : 가변저항 TR1-TR3 : 트란지스터VR1, VR2: Variable resistor TR1-TR3: Transistor

L1, L2 : 난방용판넬의 부하저항 TH1-TH8 : 과열방지기L1, L2: Load resistance of heating panel TH1-TH8: Overheat protector

S : 온도감지기S: Temperature sensor

본 고안은 전기를 이용한 난방용 판넬에 있어서 온도조절기는 1개를 사용하지만 온도감지기 및 전자스윗치는 각 판넬마다 개별로 사용한 것으로서,The present invention uses one temperature controller in the heating panel using electricity, but the temperature sensor and the electronic switch are used individually for each panel.

종래에는 여러개의 난방용판넬을 1개의 온도감지기로서 온도를 감지하므로서 온도감지기가 위치한 난방용판넬의 온도를 기준으로 하여 온돌로서 사용할 경우, 온도감지기가 없는 난방용 판넬위에 방석이나 이불을 펴놓고, 한편 온도감지기가 있는 판넬에는 아무것도 올려놓지 않았을 경우 온도조절은 온도감지기가 위치한 판넬의 온도를 측정하여 행하여지므로 온도조절기의 온도를 25℃-30℃로 하였을 경우 방석이나 이불을 올려놓은 판넬의 온도는 이 판넬에 부착된 과열방지용 써모스위치의 작동온도인 80℃-100℃까지 올라가게 되므로서 하나의 온돌내에서 온도편차가 크게되어 실용상 지장이 있을 뿐아니라 전력낭비도 크며 화재의 위험성도 있게 된다.Conventionally, when a heating panel is used as an ondol based on the temperature of the heating panel on which the temperature sensor is located by sensing temperature with one temperature sensor, a cushion or a blanket is laid on the heating panel without the temperature sensor. If nothing is placed on the panel, the temperature control is performed by measuring the temperature of the panel where the temperature sensor is located. If the temperature of the temperature controller is 25 ℃ -30 ℃, the temperature of the panel on which the cushion or the blanket is placed is As the operating temperature of the attached overheat prevention thermoswitch is raised to 80 ℃ -100 ℃, the temperature deviation is increased in one ondol, which is not only practically impaired, but also has a high power consumption and risk of fire.

본 고안은 종래의 이러한 문제점들을 개선하기 위하여 각각의 난방용 판넬마다 온도감지기 및 전자스윗치를 장치하여 각 판넬의 온도편차를 적게한 것으로서 이를 첨부된 도면에 의하여 설명하면 다음과 같다.The present invention is to reduce the temperature deviation of each panel by installing a temperature sensor and an electronic switch for each heating panel in order to improve these problems in the prior art as follows with reference to the accompanying drawings.

도면 1은 온도조절기의 회로도면으로서 전원프러그(PL1)의 한선은 트랜스(T1)에 연결되며 다른 한선은 휴우즈(F1)을 통하여 트랜스(T1)의 다른측에 연결된다. 트랜스(T1)의 2차측은 브릿지다이오드(D1)의 연결되며 브릿지다이오드(D1)의 (+)측은 콘덴서(C1), 발광다이오드(LDE1), 저항(R2) 직접회로(IC1)의 (Vcc)단자, 트란지스터(TR1)의 콜렉터에 연결되며, 브릿지다이오드(D1)의 (-)측은 콘덴서(C1)의 (-)측에 연결되며, 저항(R1), 제너다이오드(ZD1) 직접회로(IC1)의 (G)단자 가변저항(VR1), 제너다이오드(ZD3), 저항(R5) 트란지스터(TR3)의 에미터에 연결된다.1 is a circuit diagram of a thermostat, one line of the power plug PL1 is connected to the transformer T1 and the other line is connected to the other side of the transformer T1 through the fuse F1. The secondary side of the transformer T1 is connected to the bridge diode D1, and the positive side of the bridge diode D1 is the capacitor C1, the light emitting diode LDE1, and the resistor R2 integrated circuit ICc (Vcc). Terminal, is connected to the collector of transistor (TR1), (-) side of bridge diode (D1) is connected to (-) side of capacitor (C1), resistor (R1), zener diode (ZD1) integrated circuit (IC1) The (G) terminal of) is connected to the emitter of the variable resistor VR1, zener diode ZD3, and resistor R5 transistor TR3.

발광다이오드(LED1)의 캐소드측은 저항(R1)에 연결되고 제너다이오드(ZD1)의 캐소드측은 저항(R2)에 연결되며 이 공통 연결점은 직접회로(IC1)의 입력(+)측에 연결된다.The cathode side of the light emitting diode LED1 is connected to the resistor R1, the cathode side of the zener diode ZD1 is connected to the resistor R2, and this common connection point is connected to the input (+) side of the integrated circuit IC1.

한편 직접회로(IC1)의 입력(-)측은 가변저항(VR1)의 중앙점에 연결되며 직접회로(IC1)의 출력(O)측은 저항(R3)을 통하여 트란지스터(TR1)의 베이스에 연결된다.Meanwhile, the input (-) side of the integrated circuit IC1 is connected to the center point of the variable resistor VR1, and the output O side of the integrated circuit IC1 is connected to the base of the transistor TR1 through the resistor R3. .

트란지스터(TR1)의 에미터측은 가변저항(VR1)에 연결됨과 동시에 저항(R4)에 연결되고 (R4)의 다른끝은 정전압다이오드(ZD2)에 연결되고 이 (ZD2)의 다른끝은 정전압다이오드(ZD3)에 연결되며 (ZD3)의 다른끝은 (-)선에 연결된다.The emitter side of transistor TR1 is connected to variable resistor VR1 and at the same time to resistor R4, the other end of R4 is connected to constant voltage diode ZD2, and the other end of ZD2 is constant voltage diode. It is connected to (ZD3) and the other end of (ZD3) is connected to the (-) line.

정전압다이오드(ZD2)와 (ZD3)의 연결점에는 가변저항(VR2)가 연결되고 (VR2)의 다른끝은 저항(R5)에 연결되고 (R5)의 다른끝은 (-)선에 연결된다. 가변저항(VR2)의 중앙점은 직접회로(IC2)의 입력(+)측에 연결되며 (Vcc)측은 (+)선에 연결되며 (G)측은 입력단자(-)측과 연결되며 동시에 트란지스터(TR2)의 에미터측과 (TR3)의 콜렉터측과의 공통연결점에 연결되며 동시에 (CV) 단자에 연결된다. 직접회로(IC2)의 출력(O)는 저항(R6)를 통하여 트란지스터(TR2)(TR3)의 베어스에 공통연결된다.The variable resistor VR2 is connected to the connection point of the constant voltage diode ZD2 and ZD3, the other end of the VR2 is connected to the resistor R5, and the other end of the R5 is connected to the negative line. The center point of the variable resistor VR2 is connected to the input (+) side of the integrated circuit (IC2), the (Vcc) side is connected to the (+) line, and the (G) side is connected to the input terminal (-) side. It is connected to the common connection point between the emitter side of (TR2) and the collector side of (TR3) and simultaneously to the (CV) terminal. The output O of the integrated circuit IC2 is commonly connected to the bearers of the transistors TR2 and TR3 via a resistor R6.

또한 트란지스터(TR2)의 콜렉터측은 (+)선에 연결되며 동시에 (+)단자에 연결되며 트란지스터(TR3)의 에미터측은 (-)선에 연결되며 동시에 (-)단자에 연결된다.In addition, the collector side of the transistor TR2 is connected to the (+) line and at the same time to the (+) terminal, and the emitter side of the transistor TR3 is connected to the (-) line and at the same time to the (-) terminal.

도면 2는 난방용판넬의 회로도면으로서 온도감지기(S)는 단자(SNS)에 연결되며 (SNS)의 한쪽은 저항(R8)을 통하여 직류입력(-)단자에 연결되며 (-)단자는 직접회로(IC3)의 (G)단자와 전자스위치의 (G)단자에 동시에 연결된다.2 is a circuit diagram of a heating panel, in which a temperature sensor S is connected to a terminal SNS, one side of the SNS is connected to a DC input terminal through a resistor R8, and a (-) terminal is an integrated circuit. It is connected to (G) terminal of (IC3) and (G) terminal of electronic switch at the same time.

온도감지기 단자(SNS)의 다른 한선은 직접회로(IC3)의 (+)단자에 연결되며 동시에 저항(R7)를 통하여 직류입력(+)단자에 연결되며 이 (+)단자는 직접회로(IC3)의 (Vcc)측에 연결된다. 또한 직접회로(IC3)의 입력 (+)측은 단자(CV)에 연결되어 있다. 직접회로(IC3)의 출력단자(O)는 전자스윗치의 단자(I)에 연결되며 전자스위치의 단자(AC)는 휴우즈(F2)을 통하여 전원입력단자(AC)에 연결되며 여기에는 AC 110V-AC 220V에 연결된다.The other line of the temperature sensor terminal (SNS) is connected to the positive terminal of the integrated circuit (IC3) and simultaneously connected to the DC input (+) terminal through a resistor (R7), and this (+) terminal is connected to the integrated circuit (IC3). It is connected to the (Vcc) side of. In addition, the input (+) side of the integrated circuit IC3 is connected to the terminal CV. The output terminal (O) of the integrated circuit (IC3) is connected to the terminal (I) of the electronic switch, and the terminal (AC) of the electronic switch is connected to the power input terminal (AC) through the fuse (F2). Connected to AC 220V.

한편 전자스윗치의 단자(L)은 스윗치(SW2)의 접점(2)에 연결됨과 동시에 과열방지기(TH5)-(TH8)을 통하여 판넬부하(L2)에 연결된다. 스윗치(SW2)의 접점 1은 접점(3')에 연결됨과 동시에 과열방지기(TH1) -(TH4)를 통하여 판넬부하(L1)에 연결된다.Meanwhile, the terminal L of the electronic switch is connected to the contact point 2 of the switch SW2 and to the panel load L2 through the overheat protector TH5-TH8. The contact point 1 of the switch SW2 is connected to the contact point 3 'and to the panel load L1 through the overheat protector TH1-TH4.

스윗치 접점(1')은 판넬부하(L1)과 (L2)의 연결점에 공통 연결되며 단자(2')은 단자(AC')를 통하여 전원입력선에 연결된다.The switch contact 1 'is commonly connected to the connection point between the panel loads L1 and L2, and the terminal 2' is connected to the power input line through the terminal AC '.

제3도는 제2도의 전자스윗치 모듈을 도시한 것으로서 스윗치(SW2)가 내장되어 있으며 배선용 코넥터가 연결되어 있다.3 shows the electronic switch module of FIG. 2, in which a switch SW2 is incorporated and a wiring connector is connected.

제4도는 제2도의 난방용 판넬의 실체도이다.4 is an exemplary view of the heating panel of FIG.

이와 같이 구성된 본 고안의 동작을 상세히 설명하면 다음과 같다.Referring to the operation of the present invention configured as described in detail as follows.

제1도는 온도조절기에 대한 회로로서 이에 대한 상세한 동작 설명은 다음과 같다.1 is a circuit for the temperature controller, and a detailed operation thereof is as follows.

전원입력프러그(PL1)의 중앙선은 접지되며 한선은 전원스윗치(SW1), 휴우즈(F1)을 통하여 트란지스터(TR1)에 연결되며 전원입력프러그(PL1)의 다른 한선도 역시 (T1)에 연결되어 110V 혹은 220V의 전원이 트랜스(T1)에 가해지면 2차측에 AC 12V 혹은 AC 24V(입력 전원전압에 따라 다름)가 나타나며 브릿지다이오드(D1)에서 정류되고 평활콘덴서(C1)에서 직류로 변하며 발광다이오드(LDE1)을 켜주게 된다.The center line of the power input plug PL1 is grounded, and one line is connected to the transistor TR1 through the power switch SW1 and the fuse F1, and the other line of the power input plug PL1 is also connected to (T1). When 110V or 220V power is applied to the transformer (T1), AC 12V or AC 24V (depending on the input power supply voltage) appears on the secondary side, rectified in the bridge diode (D1), and converted to DC in the smoothing capacitor (C1). Turn on the diode LDE1.

직접회로(IC1)과 트란지스터(TR1)은 정전압안정회로를 구성하여 (TR1)의 에미터에는 정전압 안정된 직류 12V를 출력으로 나타낸다. 가변저항(VR1)은 출력전압 조절용이다. 이 직류 12V는 직류출력단자(+)와 (-)에 나타난다.The integrated circuit IC1 and the transistor TR1 form a constant voltage stabilization circuit, and the emitter of TR1 shows a constant voltage stable DC 12V as an output. The variable resistor VR1 is for adjusting the output voltage. This DC 12V is shown on the DC output terminals (+) and (-).

한편 직류 12V는 정전압안정 다이오드(Zener Diode), (ZD2), (ZD3)에 의하여 안정되며, 동시에 전압분활되어 가변저항(VR2)를 통하여 직접회로(IC2)의 입력(+)에 연결되어 직접회로(IC2)의 기준전압을 마련하여 주며 이는 설정온도를 결정하게 된다. 직접회로의 출력(O)는 저항(R6)를 통하여 트란지스터(TR2)(TR3)의 베이스에 공통으로 연결되어 (TR2)의 에미터와 (TR3)의 콜렉터가 공통연결되는 점의 전압은 가변저항(VR2)에 의하여 변화하며 이 가변전압은 단자 (CV)(Control Valtage)에 연결된다. CV는 Control Valtage라는 뜻이다.DC 12V is stabilized by constant voltage stabilizing diode, ZD2, and ZD3. At the same time, voltage is divided and connected to input (+) of integrated circuit (IC2) through variable resistor (VR2). The reference voltage of (IC2) is prepared, which determines the set temperature. The output O of the integrated circuit is commonly connected to the base of the transistors TR2 and TR3 through the resistor R6 so that the voltage at the point where the emitter of TR2 and the collector of TR3 are commonly connected is variable. It is changed by the resistor VR2 and this variable voltage is connected to the terminal CV (Control Valtage). CV stands for Control Valtage.

이상은 온도조절기에 내장되어 있는 회로의 작동에 관한 설명으로서 온도조절기의 출력은 직류 12V의 (+)(-)단자와 (CV)단자 (Control Valtage)가 된다. (CV)단자의 전압은 설정온도에 따른 가변저항(VR2)에 의하여 변화하게 된다.The above is a description of the operation of the circuit built in the thermostat. The output of the thermostat becomes the (+) (-) terminal and the (CV) terminal of the direct current 12V (Control Valtage). The voltage at the (CV) terminal is changed by the variable resistor VR2 according to the set temperature.

제2도는 난방용판넬에 대한 회로로서 이에 대한 상세한 동작설명은 다음과 같다.2 is a circuit for the heating panel, a detailed operation thereof is as follows.

난방판넬의 적정위치에 온도감지기가 부착되어 있으며 이 온도의 변화는 저항의 변화로 나타난다. 한편 직류 12V의 전압은 직류입력(+), (-)단자를 통하여 들어오며 설정온도에 따른 가변전압은 (CV)단자를 통하여 직접회로(IC3)의 입력(+)측에 연결된다.The temperature sensor is attached at the proper position of the heating panel and the change of temperature is represented by the change of resistance. On the other hand, the voltage of DC 12V comes in through DC input (+) and (-) terminals, and the variable voltage according to the set temperature is connected to the input (+) side of integrated circuit (IC3) through the (CV) terminal.

한편 직류입력의 (+)단자는 저항(R7), 온도감지기(S), 저항(R8)의 직렬연결에 의하여 전압분할되며 따라서 온도에 따른 저항변화를 나타내는 온도감지기(S)에 의하여 직접회로(IC3)의 (-)단자측에는 온도변화에 따른 전압의 변화를 나타내며 이는 증폭되어 출력단자(O)에 나타내어 전자스윗치(I)로 입력된다.On the other hand, the positive terminal of the DC input is divided by voltage by series connection of resistor R7, temperature sensor S, and resistor R8. Therefore, the integrated circuit (B) is connected by temperature sensor S indicating resistance change with temperature. On the negative terminal side of IC3), the voltage change according to the temperature change is amplified and output to the output terminal (O) and input to the electronic switch (I).

전자스윗치의 단자(AC)는 휴우즈(F2)를 통하여 전원콘센트에 연결되어 AC 100V, 혹은 220V를 받아 들인다. 전자스윗치의 단자(L)은 직접회로(IC3)의 입력단자(CV)에 연결된 신호에 의하여 교류전압이 0볼트때에 연결-단락(ON-OFF) 스윗칭이 일어난다. 즉 Zero voltage switching이 일어나게 된다.The terminal (AC) of the electronic switch is connected to a power outlet through the fuse (F2) and accepts AC 100V or 220V. The terminal L of the electronic switch is connected to the input terminal CV of the integrated circuit IC3 and the ON-OFF switching occurs when the AC voltage is 0 volts. That is, zero voltage switching occurs.

이때에 스윗치(SW2)가 100V의 위치에 있을 때는 난방용판넬 부하저항(L1)과 (L2)는 방열연결되어 AC 100V에 연결되며, 스윗치(SW2)가 220V 위치에 있을때엔 난방용판넬의 부하저항(L1)와 (L2)는 직렬연결되어 AC 220V에 연결되어 열을 발생하게 된다.At this time, when the switch (SW2) is in the position of 100V, the heating panel load resistors (L1) and (L2) are connected to the AC 100V by heat dissipation connection, and when the switch (SW2) is in the 220V position, the load resistance of the heating panel ( L1) and (L2) are connected in series and connected to AC 220V to generate heat.

제3도는 전자스윗치 모듈의 실체도이며 제4도는 난방용판넬의 실체도이다.3 is an actual diagram of the electronic switch module and FIG. 4 is an actual diagram of the heating panel.

Claims (3)

직접회로(IC1)과 트란지스터(TR4)로 정전압 회로를 구성하고, 직접회로(IC2)와 가변저항(VR2)로서 온도조절 회로를 구성하고 트란지스터(TR2)(TR3)로서 전류증폭기를 구성하여 온도조절전압(CV)를 생성하며, 난방용 판넬에 온도감지장치를 부착하여 온도의 변화를 전압의 변화로 나타내어 직접회로(IC3)에서 증폭하고 이 증폭된 신호로서 영볼트스윗칭(Zero Voltage Switching)을 하여 잡음을 줄이고 전력소모를 줄일 수 있는 전자스윗치를 구성하여 이 전자스윗치는 온도조절기의 출력전압(CV)에 의하여 작동되는 것을 특징으로 하는 난방용판넬The constant voltage circuit is composed of the integrated circuit IC1 and the transistor TR4, the temperature regulating circuit is configured as the integrated circuit IC2 and the variable resistor VR2, and the current amplifier is configured as the transistor TR2 TR3. Generates temperature control voltage (CV), attaches temperature sensing device to heating panel, expresses temperature change as voltage change, amplifies in integrated circuit (IC3), and uses this amplified signal as Zero Voltage Switching. By configuring the electronic switch to reduce noise and reduce power consumption, the electronic switch is operated by the output voltage (CV) of the temperature controller. 제1항에 있어서, 온도조절기와 난방용판넬은 각각 별도의 장치로 제작되며 난방용판넬은 전자스윗치 및 온도감지기(S)를 포함한 것으로서 1대의 온도조절기가 여러대의 난방용판넬을 조절할 수 있도록 한 것을 특징으로 한것The method of claim 1, wherein the temperature controller and the heating panel is made of a separate device and the heating panel includes an electronic switch and a temperature sensor (S), characterized in that one temperature controller to control a plurality of heating panels. One 제1항에 있어서, 100V, 220V의 전압변화에 따른 부하의 연결을 스윗치(SW2)를 사용하여 부하(L1)과 (L2)의 직열, 병열연결에 의하여 실행하며 한개의 난방용 판넬에 부하(L1), (L2)및 스윗치(SW2)를 동시에 구비한 것을 특징으로 하는 온도감지기와 전자스윗치를 구비한 난방용판넬.The method of claim 1, wherein the load connection according to the voltage change of 100V, 220V is performed by the series connection and parallel connection of the load (L1) and (L2) using the switch (SW2) and load (L1) on one heating panel. ), (L2) and the switch (SW2) at the same time comprising a heating panel having a temperature sensor and an electronic switch.
KR2019910012387U 1991-08-02 1991-08-02 Panel heater KR970000098Y1 (en)

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