KR960018365A - Microwave oven and automatic cooking method using thermopile sensor - Google Patents

Microwave oven and automatic cooking method using thermopile sensor Download PDF

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Publication number
KR960018365A
KR960018365A KR1019940031707A KR19940031707A KR960018365A KR 960018365 A KR960018365 A KR 960018365A KR 1019940031707 A KR1019940031707 A KR 1019940031707A KR 19940031707 A KR19940031707 A KR 19940031707A KR 960018365 A KR960018365 A KR 960018365A
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South Korea
Prior art keywords
temperature
thermopile sensor
signal
load
cooking
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KR1019940031707A
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Korean (ko)
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KR0133429B1 (en
Inventor
김지원
Original Assignee
이헌조
엘지전자 주식회사
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Priority to KR1019940031707A priority Critical patent/KR0133429B1/en
Publication of KR960018365A publication Critical patent/KR960018365A/en
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Publication of KR0133429B1 publication Critical patent/KR0133429B1/en

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Classifications

    • 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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
    • 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
    • H05B6/68—Circuits for monitoring or control
    • H05B6/686—Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

본 발명은 써모파일센서를 이용한 전자레인지 및 그의 자동요리방법에 관한 것으로, 종래에는 연속동작 요리시에 실제 음식물의 온도변화는 초기동작시와 거의 차이가 없는데도 불구하고 일정센싱 시간동안 변화된느 온도센서의 변화분은 초기동작시 변화분보다 둔감하게 증가하게되어 동일요리인네도 연속동작시에는 잘못된 요리시간이 설정되는 문제가 있다. 따라서 본 발명은 연속동작의 자동요리시 써모파일센서를 이용하여 온도편차를 없애서초기동작시와 동일하게 자동요리를 행할 수 있도록 한다.The present invention relates to a microwave oven using a thermopile sensor and an automatic cooking method thereof. In the related art, a temperature sensor changed during a constant sensing time even though the temperature change of the actual food during the continuous operation cooking is almost no difference from the initial operation. The change of the value is increased insignificantly than the change in the initial operation, there is a problem that the wrong cooking time is set during continuous operation of the same dish. Therefore, the present invention eliminates the temperature deviation by using a thermopile sensor during automatic cooking in continuous operation, so that automatic cooking can be performed in the same manner as in the initial operation.

Description

써모파일센서를 이용한 전자레인지 및 그의 자동요리방법Microwave oven and automatic cooking method using thermopile sensor

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

제3도는 본 발명 써모파일센서를 이용한 전자레인지의 구조도,3 is a structural diagram of a microwave oven using the present invention thermopile sensor,

제4도는 제3도에서 신호증폭 및 온도보상부의 상세도,4 is a detailed view of the signal amplification and temperature compensation unit in FIG.

제5도는 제3도에서 음식물의 양에 따른 온도변화 그래프로서, ㈎는 무부하시 온도변화 그래프이고, ㈏는 부하가 적을경우의 온도변화 그래프이며, ㈐는 부하가 클경우의 온도변화 그래프이다.FIG. 5 is a graph of temperature change according to the amount of food in FIG. 3, where is a graph of temperature change at no load, is a graph of temperature change when the load is small, and is a graph of temperature change when the load is large.

제6도는 제3도에서 부하판별 및 자동요리시간 산출방법을 보여주는 그래프.6 is a graph showing a method of calculating load discrimination and automatic cooking time in FIG.

Claims (4)

가열실(11)내의 음식물에 고주파를 발생시키는 마그네트론(18)과 상기 가열실(11)의 상측에 설치되어 음식물로 부터 방사되는 적외선은 투과시키나 고주파는 차폐하는 마이크로파 차폐막(13)과, 상기 마이크로파 차폐막(13)으로 부터 전달되는 적외선에서 필요한 주파수 성분만을 여과시키면서 적외선을 집광시키는 집광필터(13)와, 상기 집광필터(13)로 부터 집광된 적외선을 전기적신호로 변화시키는 써모파일센서(14)와, 상기 써모파일센서(14)를 통해 전달받은 전기적신호를 서정레벨로 증폭함과 아울러 실온을 보상하는 신호증폭 및 온도보상부(15)와, 상기에서 증폭 및 온도보상된 전기적신호를 받아서 마그네트론(18)을 자동으로 제어하기 위한 신호를마그네트론 구동부(17)로 출력하는 마이크로컴퓨터(16)로 구성된 것을 특징으로 하는 써모파일센서를 이용한 전자레인지.A magnetron 18 generating high frequency in food in the heating chamber 11 and a microwave shielding film 13 installed above the heating chamber 11 to transmit infrared rays emitted from the food but shielding high frequency, and the microwaves A light condensing filter 13 for condensing infrared rays while filtering only frequency components necessary for infrared light transmitted from the shielding film 13, and a thermopile sensor 14 for converting infrared light condensed from the condensing filter 13 into an electrical signal. And amplifying the electrical signal transmitted through the thermopile sensor 14 to a lyric level and receiving a signal amplification and temperature compensation unit 15 for compensating room temperature, and receiving the amplified and compensated temperature electrical signal. A thermopile sensor comprising a microcomputer 16 which outputs a signal for automatically controlling 18 to a magnetron driver 17. Easy microwave oven. 제1항에 있어서, 신호증폭 및 온도보상부는 써모파일센서로부터 전기적인 신호를 받는 입력부와, 상기 입력부를 통해 전달받은 미약한 신호를 소정레벨로 증폭하는 신호증폭부와, 상기 신호증촉부로 부터 전달받은 신호에 따라 외부온도의 변화에 영향을 받지않도록 실온을 보상하는 실온보상부와, 상기 실온보상부를 구동시키는 전원조정부로 이루어진 것을 특징으로 하는 써모파일센서를 이용한 전자레인지.The signal amplifier of claim 1, wherein the signal amplifier and the temperature compensator are configured to receive an electrical signal from a thermopile sensor, a signal amplifier for amplifying a weak signal received through the input unit to a predetermined level, and transmit the signal from the signal amplifier. A microwave oven using a thermopile sensor, comprising a room temperature compensation unit for compensating room temperature so as not to be affected by a change in external temperature according to a received signal, and a power adjusting unit for driving the room temperature compensation unit. 부하판별 시간동안 소정수(N)만큼 온도를 감지하여 평균을 내는 제1단계에서 얻어진 평균값과 기설정된 실험치(α,β : α>β)와 비교하는 제2단계와, 상기 제2단계에서 평균치가 실험치(α)보다 크거나 같으면 무부하로 판단하고 α보다는 작도 β보다는 크거나 같으면 중간 부하로 β보다 작으면 큰부하로 판단하는 제3단계와, 상기 제3단계에서 무부하로 판별되면 종료하고 중간 및 큰부하로 판별되면 그에따른 부하상수값(k1,k2)을 결정하는 제4단계와, 상기 4단계를 통해 부하판별시간이 경과한 직후의 조기온도(t1)를 감지하고 기설정된 온도차(△t)가 나올때까지의 온도(t2)에 도달하는 센싱시간(Ts)을 카운트하는 제5단계와, 상기 제5단계에서 남은요리시간을 산출하고 그 산출된 시간만큼 더 요리를 수행한 수 종료하는 제6단계로 이루어진 것을 특징으로 써모파일센서를 이용한 전자레인지의 자동요리방법.A second step of comparing the average value obtained in the first step of sensing and averaging the temperature by a predetermined number (N) during the load determination time with a predetermined experimental value (α, β: α> β) and the average value in the second step Is greater than or equal to the experimental value α, is determined as no load, and if greater than or equal to less than α, is determined as a medium load. And a fourth step of determining load constant values (k1, k2) according to the determination of a large load, and detecting an early temperature (t1) immediately after the load determination time has elapsed through the four steps, and setting a predetermined temperature difference (Δ). a fifth step of counting the sensing time Ts reaching the temperature t2 until t) appears, and calculating the remaining cooking time in the fifth step and ending the number of times of cooking performed by the calculated time. It consists of six steps Automatic methods of cooking using a microwave sensor files. 제3항에 있어서, 남은요리시간은 부하판별에 따른 상수값(k)에 초기온도(t1)에서 기설정된 온도차가 생긱때 도달하는 시간(t2)을 곱하여 산출하도록 한 것을 특징으로 하는 써모파일센서를 이용한 전자레인지의 자동요리방법.The thermopile sensor according to claim 3, wherein the remaining cooking time is calculated by multiplying the constant value k according to the load discrimination by the time t2 at which the predetermined temperature difference at the initial temperature t1 is reached. Auto cooking method of microwave oven using. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940031707A 1994-11-29 1994-11-29 Autoamtic cooking method of microwave oven KR0133429B1 (en)

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Application Number Priority Date Filing Date Title
KR1019940031707A KR0133429B1 (en) 1994-11-29 1994-11-29 Autoamtic cooking method of microwave oven

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KR1019940031707A KR0133429B1 (en) 1994-11-29 1994-11-29 Autoamtic cooking method of microwave oven

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KR960018365A true KR960018365A (en) 1996-06-17
KR0133429B1 KR0133429B1 (en) 1998-04-22

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