KR970025516A - Electrostatic power control method and apparatus for induction heating cooking equipment - Google Patents

Electrostatic power control method and apparatus for induction heating cooking equipment Download PDF

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Publication number
KR970025516A
KR970025516A KR1019950043870A KR19950043870A KR970025516A KR 970025516 A KR970025516 A KR 970025516A KR 1019950043870 A KR1019950043870 A KR 1019950043870A KR 19950043870 A KR19950043870 A KR 19950043870A KR 970025516 A KR970025516 A KR 970025516A
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KR
South Korea
Prior art keywords
value
outputting
container
oscillation
induction heating
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KR1019950043870A
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Korean (ko)
Inventor
김정태
Original Assignee
구자홍
Lg 전자주식회사
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Priority to KR1019950043870A priority Critical patent/KR970025516A/en
Publication of KR970025516A publication Critical patent/KR970025516A/en

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Abstract

본 발명은 유도가열 조리기기의 정전력 제어방법 및 장치에 관한 것으로, 종래에는 자성용기에 한해 유도가열을 행하여 왔기 때문에 전력 제어 범위가 넓지 못하고 한정되어 있어서, 정밀한 제어를 할 수 없으므로 출력파워의 오차 범위가 넓어지는 문제점이 있다.The present invention relates to a method and apparatus for controlling an electrostatic power of an induction heating cooker. In the related art, since the induction heating has been performed only for a magnetic container, the power control range is not wide and limited. There is a problem that the range is widened.

따라서, 본 발명은 점차 다양해지고 있는 조리용기의 환경에 따라 비자성용기를 사용하기 위해 더 높은 주파수대에서 스위칭을 할 수 있도록 하고, 출력파워의 오차 범위를 최소화 할 수 있도록 한다.Therefore, the present invention enables switching in a higher frequency band to use a nonmagnetic container according to the environment of the cooking vessel which is gradually diversified, and can minimize the error range of the output power.

Description

유도가열 조리기기의 정전력 제어방법 및 장치Electrostatic power control method and apparatus for induction heating cooking equipment

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래 유도가열 조리기기의 가열장치 회로구성도,1 is a circuit diagram of a heating apparatus of a conventional induction heating cooker,

제2도는 본 발명 유도가열 조리기기의 가열장치 회로구성도,2 is a circuit diagram of the heating device of the induction heating cooking apparatus of the present invention,

제3도는 제2도에 대한 상세회로도,3 is a detailed circuit diagram of FIG.

제4도는 본 발명 유도가열 조리기기의 정전력 제어방법에 대한 동작 과정도.Figure 4 is an operation process diagram for the constant power control method of the induction heating cooker of the present invention.

Claims (4)

최소 파워로 놓여진 조리용기를 검지하기 위하여 특정주파수 범위내의 주파수를 발진시키는 제1단계와, 상기 제I단계에서 특정주파수 발진 후 부하에 걸리는 전류를 검출하여 용기를 판정하는 제2단계와, 상기 제2단계에서 용기가 없으면 용기 이상신호를 발생하고 비자성용기 또는 자성용기이면 그 용기에 따라 설정된 예상전력값을 출력하는 제3단계와, 상기 제3단계에서 예상전력값을 출력하고 이때 부하에 흐르는 전류값에 따른 전압을 검출하여 목표전력값에 도달하였는가를 체크하는 제4단계와, 상기 제4단계에서 목표전력값에 도달하지 않으면 전력값을 변화시켜 목표전력값에 도달하도록 하고 목표전력값에 도달하면 예상전력값을 기준값을 설정하는 제5단계와, 상기 제5단계에서 설정한 기준값을 가지고 정전력 제어를 행하여 유도가열을 행한 후 종료하는 제6단계로 이루어진 것을 특징으로 하는 유도가열 조리기기의 정전력 제어방법.A first step of oscillating a frequency within a specific frequency range in order to detect a cooking vessel placed at a minimum power; and a second step of determining a container by detecting a current applied to a load after the specific frequency oscillation in the first step; In the second step, if there is no container, an abnormal signal is generated, and in the case of a nonmagnetic container or a magnetic container, a third step of outputting an estimated power value set according to the container; A fourth step of checking whether the target power value is reached by detecting a voltage according to the value, and if the target power value is not reached in the fourth step, changing the power value to reach the target power value and reaching the target power value. Induction heating is performed by the fifth step of setting the reference value to the expected power value and the constant power control with the reference value set in the fifth step. Induction constant power control method of a heating cooker according to claim 6 comprising the steps of: after termination. 필터링 및 정류하여 만들어진 직류전압을 발진수단으로부터 출력되는 주파수에 의해 스위칭수단의 스위칭 소자를 제어하여 워킹코일에 공급함으로써 용기내의 음식물을 유도 가열하는 유도가열 조리기에 있어서, 부하측으로 전달되어지는 전류를 검출하는 전류트랜스를 이용하여 전류의 양을 검출하는 전류 검출수단과, 상기 전류 검출수단을 통해 검출한 전류의 값에 따라 스위칭소자를 구동하기 위한 데이타 값을 출력하는 제어수단과, 상기 제어수단으로부터 출력되는 디지탈의 제어값을 아날로그 값으로 변환시켜 출력하는 디지탈/아날로그 변환수단과, 상기 디지탈/아날로그 변환수단의 출력값을 일정레벨로 증폭하기 위한 증폭수단과, 상기 증폭수단의 출력 전압에 따라 가변된 발진주파수를 출력하도록 하는 발진수단과, 상기 발진수단의 출력 주파수에 따라 스위칭수단의 스위칭소자를 구동하기 위한 스위핑 제어신호를 출력하는 스위칭 제어수단으로 구성된 것을 특징으로 하는 유도가열 조리기기의 정전력 제어장치.An induction heating cooker which induces heating of food in a container by controlling the switching element of the switching means by the frequency output from the oscillation means by filtering and rectifying the DC voltage produced by the oscillation means, and detecting the current delivered to the load side. Current detecting means for detecting an amount of current using a current transformer, control means for outputting a data value for driving the switching element according to the value of the current detected by the current detecting means, and outputting from the control means. Digital / analog converting means for converting a digital control value to an analog value and outputting the same; amplifying means for amplifying the output value of the digital / analog converting means to a predetermined level; and oscillation variable according to the output voltage of the amplifying means. Oscillating means for outputting a frequency, and outputting of the oscillating means Constant power control device of an induction heating cooking apparatus according to claim consisting of a switching control means for outputting a sweep control signal for driving the switching elements of the switching means according to the frequency. 제2항에 있어서, 디지탈/아날로그 변환수단은 저항값을 이용하여 전압값으로 가변하는 것을 특징으로 하는 유도가열 조리기기의 정전력 제어장치.The apparatus according to claim 2, wherein the digital / analog converting means is converted into a voltage value using a resistance value. 제2항에 있어서, 발진수단의 발진주파수는 증폭수단의 출력 전압값에 반비례하여 가변되는 것을 특징으로 하는 유도가열 조리기기의 정전력 제어장치.The apparatus of claim 2, wherein the oscillation frequency of the oscillation means is changed in inverse proportion to the output voltage value of the amplifying means. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950043870A 1995-11-27 1995-11-27 Electrostatic power control method and apparatus for induction heating cooking equipment KR970025516A (en)

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KR1019950043870A KR970025516A (en) 1995-11-27 1995-11-27 Electrostatic power control method and apparatus for induction heating cooking equipment

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KR1019950043870A KR970025516A (en) 1995-11-27 1995-11-27 Electrostatic power control method and apparatus for induction heating cooking equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010077076A (en) * 2000-01-31 2001-08-17 이용인 current sensing apparatus of induction cooker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010077076A (en) * 2000-01-31 2001-08-17 이용인 current sensing apparatus of induction cooker

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