KR900005037Y1 - Control circuit of electronic range - Google Patents
Control circuit of electronic range Download PDFInfo
- Publication number
- KR900005037Y1 KR900005037Y1 KR2019850017674U KR850017674U KR900005037Y1 KR 900005037 Y1 KR900005037 Y1 KR 900005037Y1 KR 2019850017674 U KR2019850017674 U KR 2019850017674U KR 850017674 U KR850017674 U KR 850017674U KR 900005037 Y1 KR900005037 Y1 KR 900005037Y1
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- South Korea
- Prior art keywords
- switch
- timer
- circuit
- microwave oven
- thawing
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/666—Safety circuits
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래의 회로도.1 is a conventional circuit diagram.
제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.
제3도는 종래의 전자식방법에 의한 실시예를 나타낸 회로도.3 is a circuit diagram showing an embodiment by a conventional electronic method.
제4도는 본 고안의 전자식방법에 의한 실시예를 나타낸 회로도.Figure 4 is a circuit diagram showing an embodiment by the electronic method of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1, 11 : 주전원회로 2, 12 : 발진부1, 11: main power circuit 2, 12: oscillator
TH1∼TH4, TH1'∼TH4' : 써말컷오프스위치TH 1 to TH 4 , TH 1 'to TH 4 ': Thermal cutoff switch
DT1∼DT2: 해동타이머 DS1∼DS2: 해동타이머스위치DT 1 to DT 2 : Thaw timer DS 1 to DS 2 : Thaw timer switch
PR1∼PR4: 제1차회로스위치 SS1∼SS4: 제2차회로스위치PR 1 to PR 4 : Primary circuit switch SS 1 to SS 4 : Secondary circuit switch
TM1∼TM2: 타이머 n1∼n4: 트랜스포머1, 2차측권선TM 1- TM 2 : Timer n 1- n 4 : Transformer 1, secondary winding
MS1∼MS4: 모니터스위치 FM1∼FM4: 팬모터MS 1 to MS 4 : Monitor switch FM 1 to FM 4 : Fan motor
T1∼T4: 트랜스포머 T5∼T6: 저전압용트랜스T 1 to T 4 : transformer T 5 to T 6 : low voltage transformer
TRI1, TRI2: 트라이액 M1∼M4: 마그네트론TRI 1 , TRI 2 : Triac M 1 -M 4 : Magnetron
본 고안은 전자레인지의 과열방지회로에 과한 것으로, 특히 전자레인지를 장시간 사용하게 됨에 따라 발생되는 과열로 말미암은 전자레인지의 손상이나 화재의 발생을 방지하도록 된 전자레인지의 과열방지회로에 관한 것이다.The present invention is excessive to the overheat prevention circuit of the microwave oven, and particularly relates to the overheat prevention circuit of the microwave oven to prevent damage or fire of the microwave oven caused by overheating caused by using the microwave for a long time.
일반적으로 전자레인지는 마그네트론에서 발생되는 고주파에 의해서 식품이 조리되도록 되어 있기 때문에 전자레인지를 장시간 사용하게되면 고주파에 의해 전자레인지의 내부가 높은 열을 받게 되어 있고, 이로 말미암아 전자레인지의 내부에서 발생된 과열에 의해 전자레인지가 손상되거나 화재발생의 원인이 되고 있는바, 이에 대하여 종래에는, 제1도에 도시된 바와 같이, 써말컷오프스위치(TH1)(TH2)와 타이머(TM1), 해동타이머(DT1), 해동타이머스위치(DS1) 및 팬모터(FM1)로 구성되는 전자레인지의 과열방지회로를 채용하므로서 전자레인지의 내부에서 발생되는 높은 열을 써말컷오프스위치(TH1)(TH2)에서 감지하고, 그에 따라 써말컷오프스위치(TH1)(TH2)가 온오프됨에 따라 전원공급을 제어토록하여 마그네트론(MT1)의 발진을 조절시켜 전자레인지를 보호하게 되었다.In general, the microwave oven is cooked by the high frequency generated from the magnetron, so when the microwave oven is used for a long time, the inside of the microwave is subjected to high heat due to the high frequency. Overheating may damage the microwave oven or cause a fire. In the related art, as shown in FIG. 1, the thermal cutoff switch TH 1 (TH 2 ), the timer TM 1 , and the thaw are thawed. The thermal cut-off switch (TH 1 ) of the microwave oven is adopted by adopting the overheat prevention circuit of the microwave oven composed of a timer (DT 1 ), a thawing timer switch (DS 1 ), and a fan motor (FM 1 ). detected by the TH 2), and Thermal cut-off switch accordingly (TH 1) (TH 2) it is ever to control the power supply on and off as the former to control the oscillation of the magnetron (MT 1) It was to protect the oven.
그러나, 이와 같은 방법은 써말컷오프스위치(TH1)(TH2)가 전원(AC)에 대하여 직렬로 접속되기 때문에 고전류에 대해서 충분한 내구성을 지닐 수 있는 고가의 제품이 사용되어져야 하므로 제품의 원가가 상승되는 문제가 있었다.However, in this method, since the thermal cutoff switch (TH 1 ) (TH 2 ) is connected in series with the power source (AC), an expensive product capable of having sufficient durability against high current must be used. There was a problem with ascension.
본 고안은 상기한 문제점을 개선시키기 위한 것으로서, 써말컷오프스위치를 소비전력이 적은 해동타이머에 직렬로 접속시켜 안정성을 유지하면서도 제품원가를 낮출 수 있도록 된 전자레인지의 과열방지회로를 제공하고자 함에 그 목적이 있다.The present invention is to improve the above problems, to provide a thermal cut-off circuit of the microwave oven to reduce the cost of the product while maintaining the stability by connecting the thermal cut-off switch in series with a low power consumption thaw timer There is this.
이하 본 고안의 구성 및 작용, 효과를 예시도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.
본 고안은 퓨우즈(F2)와 제1차회로스위치(PS2), 써말컷오프스위치(TH'2), 제2차회로스위치(SS2), 모니터스위치(MS2), 타이머(TM2), 해동타이머(DT2), 해동타이머스위치(DS2) 및 팬모터(FM2)로 구성된 주전원회로(11)가 트랜스포머(T2)를 매개하여 마그네트론(M2)과 고전압용 다이오드(D2), 고전압용콘덴서(C2) 및 저항(R2)으로 구성된 발진부(12)에 연결되어서 된 전자레인지회로에 있어서, 상기 주전원회로(11)에 있는 해동타이머(DT2)에 써말컷오프스위치(TH1')가 직렬로 연결된 구조로 되어 있다.The present invention is a fuse (F 2 ) and primary circuit switch (PS 2 ), thermal cut-off switch (TH ' 2 ), secondary circuit switch (SS 2 ), monitor switch (MS 2 ), timer (TM 2 ), The main circuit 11 consisting of the thawing timer (DT 2 ), the thawing timer switch (DS 2 ) and the fan motor (FM 2 ) is a magnetron (M 2 ) and a high voltage diode (D) via the transformer (T 2 ). 2), a capacitor for high-voltage (C 2) and in the microwave circuit be connected to the resistance (R 2) oscillation unit 12 consisting of, Thermal cut-off switch in the defrosting timer (DT 2) in the main power circuit (11) (TH 1 ') has a structure connected in series.
제2도는 상기한 구조로 되어 있는 본 고안의 회로도로서, 먼저 전자레인지를 작동시키기 위하여 전자레인지의 도어를 닫으면 제1, 2차회로 스위치(PS2)(SS2)가 접속되고 모니터스위치(MS2)가 단락된다.2 is a circuit diagram of the present invention having the above-described structure. First, when the door of the microwave oven is closed to operate the microwave oven, the first and second circuit switches PS 2 (SS 2 ) are connected and the monitor switch MS 2 ) is short-circuited.
이어 타이머(TM2)를 사용하여 전자레인지의 작동시간을 설정하고 해동타이머(DT2)를 조작하면 해동타이머(DT2)에 접속된 해동타이머스위치(DS2)가 접속된다. 이때, 스타트스위치를 온으로 하게 되면 트랜스포머(T2)의 1차측권선(n3)으로부터 2차측권선(n4)으로 전류가 유기되어 마그네트론(M2)이 식품을 조리하기 위해서 고주파발진을 하게된다.Then, when the operating time of the microwave oven is set using the timer TM 2 and the thawing timer DT 2 is operated, the thawing timer switch DS 2 connected to the thawing timer DT 2 is connected. At this time, when the start switch is turned on, current is induced from the primary winding n 3 of the transformer T 2 to the secondary winding n 4 so that the magnetron M 2 performs high frequency oscillation to cook food. do.
여기서, 전자레인지의 작동시간이 길어질수록 전자레인지의 가열실은 마그네트론(M2)에서 발진되는 고주파에 의해 가열이 되는바, 이때에는 써말컷오프스위치(TH1')가 오프되며, 그에 따라 해동타이머(DT2)가 오프되어 해동타이머(DT2)에 접속된 해동타이머스위치(DS2)가 단락되어 주전원 공급이 중지되므로 트랜스포머(T2)의 1차측권선(n3)에서 2차측권선(n4)으로 유기되는 전류가 없어서 마그네트론(M2)의 발진작용이 멈추게 되고, 전자레인지의 가열실온도가 낮아지면 써말컷오프스위치(TH1')가 온되고, 그에 따라 해동타이머(DT2)와 해동타이머스위치(DS2)가 작동되어 전원이 공급된다. 따라서, 전자레인지를 과열로부터 보호되게 된다.Here, as the operating time of the microwave oven becomes longer, the heating chamber of the microwave oven is heated by the high frequency oscillated from the magnetron (M 2 ). In this case, the thermal cutoff switch (TH 1 ') is turned off, and thus the thawing timer ( DT 2) a secondary winding from the primary winding (n 3) of the transformer (T 2), so is off is the defrosting timer switch (DS 2) connected to a defrosting timer (DT 2) short-circuit the main power supply is stopped (n 4 Oscillation of the magnetron (M 2 ) is stopped because there is no current induced by), and when the heating chamber temperature of the microwave oven becomes low, the thermal cutoff switch (TH 1 ') is turned on, and thus the thawing timer (DT 2 ) is thawed. The timer switch DS 2 is activated to supply power. Thus, the microwave oven is protected from overheating.
상기한 바와 같이 본 고안은 정격전류허용치가 낮은 써말컷오프스위치를 사용하여 전자레인지가 과열되는 것을 방지할 수 있게 된다. 또한, 본 고안은 상기한 기계식방법에 한정되는 것이 아니라 전자식에 의한 전자레인지의 과열방지회로에서도 적용가능하게 되는 바, 전자식에 의한 방법에 있어서는 제3도의 종래의 회로도에 도시된 바와 같이 써말컷오프스위치(TH3)가 전원에 대하여 직렬로 접속되어 있으므로 고전류용이 필요하게 되나 제4도에 도시된 바와 같이 써말컷오프스위치(TH3')를 저전압용트랜스(T6)에 직렬로 연결시키게 되므로 저전류용의 사용이 가능하게 되어 제품의 원가가 절감되는 효과가 있다.As described above, the present invention can prevent overheating of the microwave oven by using a thermal cutoff switch having a low rated current allowance. In addition, the present invention is not limited to the mechanical method described above, but is also applicable to an overheat prevention circuit of an electronic microwave oven. In the electronic method, a thermal cutoff switch as shown in the conventional circuit diagram of FIG. Since (TH 3 ) is connected in series to the power supply, high current is required.However, as shown in FIG. 4, the thermal cutoff switch (TH 3 ') is connected in series to the low voltage transformer (T 6 ) so that a low current is required. It is possible to use the dragon, thereby reducing the cost of the product.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019850017674U KR900005037Y1 (en) | 1985-12-26 | 1985-12-26 | Control circuit of electronic range |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR2019850017674U KR900005037Y1 (en) | 1985-12-26 | 1985-12-26 | Control circuit of electronic range |
Publications (2)
Publication Number | Publication Date |
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KR870011688U KR870011688U (en) | 1987-07-18 |
KR900005037Y1 true KR900005037Y1 (en) | 1990-06-05 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR2019850017674U KR900005037Y1 (en) | 1985-12-26 | 1985-12-26 | Control circuit of electronic range |
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KR (1) | KR900005037Y1 (en) |
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1985
- 1985-12-26 KR KR2019850017674U patent/KR900005037Y1/en not_active IP Right Cessation
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KR870011688U (en) | 1987-07-18 |
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