KR970064514A - Dual half-bridge type electromagnetic induction heating apparatus and control method - Google Patents

Dual half-bridge type electromagnetic induction heating apparatus and control method Download PDF

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KR970064514A
KR970064514A KR1019960006377A KR19960006377A KR970064514A KR 970064514 A KR970064514 A KR 970064514A KR 1019960006377 A KR1019960006377 A KR 1019960006377A KR 19960006377 A KR19960006377 A KR 19960006377A KR 970064514 A KR970064514 A KR 970064514A
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South Korea
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heating
electromagnetic induction
type electromagnetic
bridge type
induction heating
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KR1019960006377A
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Korean (ko)
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KR0176904B1 (en
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정용채
우성택
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구자홍
Lg 전자 주식회사
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00Cooking-vessels
    • A47J27/56Preventing boiling over, e.g. of milk
    • A47J27/62Preventing boiling over, e.g. of milk by devices for automatically controlling the heat supply by switching off heaters or for automatically lifting the cooking-vessels

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

본 발명은 듀얼 하프-브릿지형 전자 유도 가열장치 및 제어방법에 관한 것으로, 종래에는 일반적으로 주파수 제어를 통해서 출력을 제어함에 따라 가령 각 가열판에위에 다른 크기의 용기를 놓거나 또는 다른 출력을 내고 있을 경우에는 인접한 가열판 사이에서 동작주파수의 차이에 의한 간섭음이 발생하는 문제점과 각각 별개의 제어회로를 갖는 인버터로 각각 하나의 워킹코일에 전력을 공급하기 때문에 전체 시스템이 커지고 가격 또한 상승하게 되는 문제점이 있다.The present invention relates to a dual half-bridge type electromagnetic induction heating apparatus and a control method thereof. In the related art, generally, when an output is controlled through frequency control, if a different size container is placed on each heating plate, There is a problem in that an interference sound is generated due to a difference in operating frequency between adjacent heating plates and an inverter having a separate control circuit supplies power to one working coil to increase the total system and increase the price .

Description

듀얼 하프-브릿지형 전자 유도 가열장치 및 제어방법Dual half-bridge type electromagnetic induction heating apparatus and control method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 종래의 다출력형 전자 유도 가열장치 회로구성도, 제2도는 본 발명의 듀얼 하프-브릿지형 전자 유도 가열장치 회로 구성도, 제3도는 제2도에서, 각 워킹코일 구동시의 스위칭상태 및 전류 파형도로서, (가)는 Lr1이 동작할 경우의 스위칭 상태 파형도이고, (나)는 Lr2가 동작할 경우의 스위칭 상태 파형도이고, (다)는 Lr1이 동작할 경우의 전류파형도이다, 제4도는 본 발명의 듀얼 하프-브릿지형 전자 유도 가열장치의 제1실시예, 제5도는 제4도에서, 각 워킹코일 구동시 스위칭상태 및 각부의 전류파형도로서, (가)는 Lr1이 동작할 경우의 스위칭 상태 파형도이고, (나)는 Lr2가 동작할 경우의 스위칭 상태 파형도이고, (다)는 Lr1이 동작할 경우의 전류 및 전압파형도이다, 제6도는 본 발명의 듀얼 하프-브릿지형 전자 유도 가열장치의 제2실시예, 제7도는 제6도에서, 다이오드(Da3)(Da4) 삽입시의 전류 및 전압파형도.FIG. 2 is a circuit diagram of a dual half-bridge type electromagnetic induction heating apparatus according to the present invention. FIG. 3 is a circuit diagram showing a switching operation when each working coil is driven as the state and the current waveform, (a) being an switching state waveforms when L r1 operation, (b) being an switching state waveforms if the L r2 operation, (c) is L r1 to the operation FIG. 4 is a current waveform diagram of a switching state and a corner portion of each dual-bridge type electromagnetic induction heating apparatus according to a first embodiment of the present invention, FIG. 5 and FIG. , (a) being an switching state waveforms when L r1 operation, (b) being an switching state waveforms if the L r2 operation, (c) the current and voltage waveforms in case of the operation L r1 Fig. 6 is a second embodiment of the dual half-bridge type electromagnetic induction heating apparatus of the present invention, Fig. 7 6 is a current and voltage waveform diagram at the time of inserting the diode Da3 ( Da4 ). Fig.

Claims (10)

입력전원의 역률을 높이기 위해 평활하여 얻은 직류전압을 공급하는 평활용 커패시터와, 입력되는 전원에 따라 발열하여 하나 이상의 가열판을 선택적으로 가열하는 가열수단과, 스위칭 제어신호에 의해 스위칭 동작하여 상기 가열수단이 선택적으로 가열되도록 하는 스위칭수단으로 구성된 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.A heating means for selectively heating one or more heating plates according to an input power source; and a control unit for performing a switching operation by the switching control signal to control the heating means And a switching means for selectively heating the first half-bridge type electromagnetic induction heating apparatus. 제1항에 있어서, 가열수단은 스위칭수단의 스위칭 동작에 따라 입력되는 전원으로 동작하여 제1의 가열판을 가열하는 워킹코일(Lr1)과, 평활용 커패시터에 병렬로 두개의 공진 커패시터(Cr1,Cr2)가 직렬로 연결된 제1가열부와; 상기 스위칭수단의 스위칭 동작에 따라 입력되는 전원으로 동작하여 제2의 가열판을 가열하는 워킹코일(Lr2)과, 상기 평활용 커패시터에 병렬로 두개의 공진 커패시터(Cr3,Cr4)가 직렬로 연결된 제2가열부로 구성된 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.The method of claim 1, wherein the heating means comprises two resonant capacitors (C r1 in parallel to the working and operating as a power source that is input according to a switching operation of the switching means for heating the heating plate of the first coil (L r1) and a smoothing capacitor , C r2 ) are connected in series; A working coil L r2 which operates in accordance with a switching operation of the switching means and heats the second heating plate, and two resonance capacitors C r3 and C r4 in series with the smoothing capacitor And a second heating unit connected to the second half-bridge type electromagnetic induction heating unit. 제2항에 있어서, 네개의 공진 커패시터(Cr1-Cr4)중 두개의 공진 커패시터 (Cr1,Cr3)에 병렬로 각각 연결된 다이오드(Da1,Da2)를 더 포함하여 구성된 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.3. The resonator according to claim 2, further comprising diodes (Da1, Da2) connected in parallel to two resonance capacitors (C r1, C r3 ) of four resonance capacitors (C r1 -C r4 ) Half-bridge type electromagnetic induction heating apparatus. 제2항에 있어서, 네개의 공진 커패시터(Cr1-Cr4)에 병렬로 다이오드 (Da1-Da4)를 각각 연결하여 다른 전류 및 전압을 얻도록 한 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.The method of claim 2, wherein the four resonant capacitor (C r1 -C r4) each connected to a diode (Da1-Da4) in parallel, dual, characterized in that to obtain a different current and voltage half-bridge-type electromagnetic induction heating Device. 제1항에 있어서, 스위칭 수단은 스위칭 제어신호에 따라 온/오프하여 제1, 제2가열부가 독립적으로 가열 동작을 수행할 수 있도록 전원을 공급하기 위해 역병렬 다이오드와 보조공진 커패시터(Ca1,Ca2,Ca3)를 갖는 직렬로 연결된 스위치(S1-S3)로 구성된 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.The plasma display apparatus according to claim 1, wherein the switching means is turned on / off in accordance with the switching control signal so as to supply power to the first and second heating sections to independently perform the heating operation, , And Ca3) connected in series with each other. The dual half-bridge type electromagnetic induction heating apparatus according to claim 1, wherein the switches (S1-S3) are connected in series. 제1항에 있어서, 가열수단과 스위칭수단을 평활용 커패시터에 병렬로 N개를 병렬로 구성하여 2N개의 가열판을 동작시킬 수 있도록 하여 다출력 제어를 위한 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.The dual half-bridge type electromagnetic induction motor according to claim 1, characterized in that N heating elements and switching means are arranged in parallel in parallel with the smoothing capacitor so that 2N heating plates can be operated for multi- Heating device. 제1항에 있어서, 가열수단은 그의 출력제어를 시분할 제어를 통하여 이루어지도록 한 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.2. The dual half-bridge type electromagnetic induction heating apparatus according to claim 1, wherein the heating means controls its output through time division control. 스위치(S1,S2)를 온/오프로 제어하여 제1가열부가 발열하도록 하는 제1과정과, 스위치(S2,S3)를 온/오프로 제어하여 제2가열부가 발열하도록 하는 제2과정과, 상기 제1과정과 제2과정을 일정 주기로 교번 실행하여 두개의 가열판이 가열되도록 하는 제3과정으로 진행되는 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.A second step of causing the first heating unit to generate heat by controlling the switches S1 and S2 on and off and a second process of controlling the second and third heating units by controlling the switches S2 and S3 on / Wherein the first step and the second step are alternately performed at regular intervals to proceed to a third step of heating the two heating plates. 제8항에 있어서, 제1과정에서 제1가열부가 가열될 때 제2가열부가 가열되지 않도록 하기 위해 스위치(S3)를 온스키는 제4과정을 더 포함하여 진행되는 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열 제어방법.The method of claim 8, wherein the step of controlling the switch (S3) further comprises a fourth step to prevent the second heating part from being heated when the first heating part is heated in the first step. Bridge type electromagnetic induction heating control method. 제8항에 있어서, 제2과정에서 제2가열부가 가열될 때 제2가열부가 가열되지 않도록 하기 위해 스위치(S2)를 온스키는 제5과정을 더 포함하여 진행되는 것을 특징으로 하는 듀얼 하프-브릿지형 전자 유도 가열장치.10. The method of claim 8, wherein the second step of the second step further comprises the fifth step of controlling the switch S2 to prevent the second heating part from being heated when the second heating part is heated in the second step. Bridge type electromagnetic induction heating apparatus. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960006377A 1996-03-11 1996-03-11 Controller for induction heater of rice cooker KR0176904B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100685501B1 (en) * 2003-09-25 2007-02-23 인터내쇼널 렉티파이어 코포레이션 Induction heating apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102009354B1 (en) * 2012-11-26 2019-08-09 엘지전자 주식회사 Induction heat cooking apparatus and method for driving the same
KR102009344B1 (en) * 2012-12-03 2019-08-09 엘지전자 주식회사 Induction heat cooking apparatus and method for controlling of output level the same
KR102031875B1 (en) * 2013-01-02 2019-10-14 엘지전자 주식회사 Induction heat cooking apparatus and method for controlling of output level the same
KR102031907B1 (en) * 2013-01-02 2019-10-14 엘지전자 주식회사 Induction heat cooking apparatus and method for controlling of output level the same
KR102037311B1 (en) * 2013-01-02 2019-11-26 엘지전자 주식회사 Induction heat cooking apparatus and method for controlling of output level the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100685501B1 (en) * 2003-09-25 2007-02-23 인터내쇼널 렉티파이어 코포레이션 Induction heating apparatus
US7368691B2 (en) 2003-09-25 2008-05-06 International Rectifier Corporation Induction heating apparatus

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