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KR950025341A - Microwave Load Matching Device - Google Patents

Microwave Load Matching Device Download PDF

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Publication number
KR950025341A
KR950025341A KR1019940002735A KR19940002735A KR950025341A KR 950025341 A KR950025341 A KR 950025341A KR 1019940002735 A KR1019940002735 A KR 1019940002735A KR 19940002735 A KR19940002735 A KR 19940002735A KR 950025341 A KR950025341 A KR 950025341A
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KR
South Korea
Prior art keywords
load
matching
impedance
microcomputer
magnetron
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Granted
Application number
KR1019940002735A
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Korean (ko)
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KR0133085B1 (en
Inventor
최준식
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이헌조
엘지전자 주식회사
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Priority to KR1019940002735A priority Critical patent/KR0133085B1/en
Priority to JP6254764A priority patent/JP2627730B2/en
Priority to US08/311,017 priority patent/US5512736A/en
Priority to CN94113684A priority patent/CN1063608C/en
Publication of KR950025341A publication Critical patent/KR950025341A/en
Application granted granted Critical
Publication of KR0133085B1 publication Critical patent/KR0133085B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning
    • 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
    • H05B6/6464—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using weight sensors

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

본 발명은 전자레인지에서 부하 변동에 대응하여 최적, 최고의 효율을 낼 수 있도록 마이크로 웨이브출력과 임피던스 정합을 자동 조절해주는 전자레인지의 부하 자동 정합 장치에 관한 것이다.The present invention relates to an automatic load matching device for a microwave oven that automatically adjusts microwave output and impedance matching to achieve optimum and best efficiency in response to load variation in a microwave oven.

종래에는 마이크로 웨이브의 출력을 일정한 부하에 매칭시켜 가열실(1)과 웨이브 가이드(6)를 설계, 제작(예를 들면 물 2000cc를 부하로 하여 최고 효율을 낼 수 있는 임피던스로 가열실(1)과 웨이브 가이드(6)를 설계하고 제작)하기 때문에, 음식물의 무게가 변하거나, 또는 음식물의 무게는 동일해도 음식물의 종류가 달라지는 경우에는 마이크로 웨이브 출력이 변동되는 문제점이 있다.Conventionally, the heating chamber 1 and the wave guide 6 are designed and manufactured by matching the output of the microwave to a constant load (for example, the heating chamber 1 with an impedance capable of producing the highest efficiency with a load of 2000 cc of water). And the design of the wave guide 6), there is a problem that the microwave output fluctuates when the weight of the food is changed or the food is the same even though the weight of the food is the same.

본 발명은 전원부(7)로부터 마그네트론(5)에 공급되는 전류 변화를 검출하여 이로부터 부하 변동을 감지한 신호를 마이컴(8A)에 공급하는 부하 변동 감지수단(10)과, 마이컴(8A)의 제어를 받아 웨이브 가이드(6)내의 임피던스를 가변시켜 부하에 대응하는 최적의 임피던스로 정합시켜 주는 임퍼던스 정합수단(11)과, 마이컴(8A)의 제어를 받아 상기 임퍼던스(11)을 구동시키는 정합 구동수단(12)과, 부하 변동 감지수단(10)의 감지결과를 입력받아, 변동된 부하량에 따라 임퍼던스 정합을 위해 정합 구동수단(12)을 구동제어함과 함께 상기 턴테이블 모터(4) 및 전원부(7)를 제어하는 마이컴(8A)으로 구성되어, 가열실내의 부하변동을 감지하고, 이 감지된 부하 변동에 따라 최적, 최고의 효율을 낼 수 있도록 웨이브 가이드의 임피던스 정합을 제어함으로써, 부하 변동에도 불구하고 최적의 요리를 실행할 수 있도록 한 전자레인지의 부하 자동 정합 장치이다.The present invention detects a change in current supplied from the power supply unit 7 to the magnetron 5, and load change detection means 10 for supplying a signal detecting the load change therefrom to the microcomputer 8A and the microcomputer 8A. Impedance matching means 11 for varying the impedance in the wave guide 6 under control and matching to the optimum impedance corresponding to the load, and driving the impedance 11 under the control of the microcomputer 8A. The turntable motor 4 receives the matching driving means 12 and the detection result of the load variation detecting means 10 and drives the matching driving means 12 for impedance matching according to the changed load amount. And a microcomputer 8A for controlling the power supply unit 7 to detect the load change in the heating chamber and to control the impedance matching of the wave guide so as to achieve the best and the best efficiency according to the detected load change. Variance Despite the automatic load matching apparatus of the microwave oven to be able to run the optimum cooking.

Description

전자레인지의 부하 자동 정합 장치Microwave Load Matching Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 전자레인지의 구성을 나타낸 도면,1 is a view showing the configuration of a conventional microwave oven,

제2도는 종래의 전자레인지에서 부하 변동에 따른 출력 효율의 관계를 나타낸 도면,2 is a view showing the relationship between the output efficiency according to the load variation in a conventional microwave oven,

제3도는 본 발명의 전자레인지의 부하 자동 정합 장치의 구성을 나타낸 도면,3 is a view showing the configuration of the automatic load matching device of the microwave oven of the present invention,

제4도는 본 발명의 부하 자동 정합 장치에서 부하 변동 감지수단의 실시예 회로도.4 is a circuit diagram of an embodiment of load variation detecting means in the automatic load matching device of the present invention.

Claims (2)

음식물이 조리되는 가열실(1)과, 상기 가열실(1)내에서 음식물(2)이 탑재된 상태로 회전되는 텐테이블(3)과, 상기 텐테이블(3)을 구동시키는 텐테이블 모터94)와, 마이크로 웨이브를 발생시키는 마그네트론(5)과, 상기 마그네트론(5)에서 발생된 마이크로 왜이브를 가열실(1)내로 이송 안내하는 웨이브 가이드(6)와, 상기 마그네트론(7)에 전원을 공급하는 전원부97)와, 사용자가 조리 명령을 입력하는 키입력부(9)로 구성된 전자레인지에 있어서, 상기 전원부(7)로부터 마그네트론(5)에 공급되는 전류 변화를 검출하여 이로부터 부하변동을 감지한 신호를 마이컴(8A)에 공급하는 부하 변동 감지수단(10)과, 마이컴(8A)의 제어를 받아 웨이브 가이드(6)내의 임피던스를 가변시켜 부하에 대응하는 최적의 임피던스로 정합시켜 주는 임피던스 정합수단(11)과, 마이컴(8A)의 제어를 받아 상기 임피던스 정합수단(11)을 구동시키는 정합 구동수단(12)과, 부하 변동 감지수단(10)의 감지 결과를 입력받아, 변동된 부하량에 따라 임피던스 정합을 위해 정합 구동수단(12)을 구동 제어함과 함께 상기 텐테이블 모터(4) 및 전원부(7)를 제어하는 마이컴(8A)으로 구성된 것을 특징으로 하는 전자레인지의 부하 자동 정합 장치.A heating chamber (1) in which food is cooked, a tentable (3) rotated while the food (2) is mounted in the heating chamber (1), a tentable motor (94) for driving the tentable (3), A magnetron 5 for generating microwaves, a wave guide 6 for guiding the microdave generated in the magnetron 5 into the heating chamber 1, and a power supply unit for supplying power to the magnetron 7 97), and a microwave oven comprising a key input unit 9 for inputting a cooking command by the user, wherein a signal is detected by detecting a change in current supplied from the power supply unit 7 to the magnetron 5 and detecting a load change therefrom. Load fluctuation sensing means 10 for supplying the microcomputer 8A and impedance matching means 11 for controlling the impedance in the wave guide 6 under the control of the microcomputer 8A to match the optimum impedance corresponding to the load. ) And the microcomputer (8A) Matching driving means 12 for driving the impedance matching means 11 under control, and the detection result of the load variation detecting means 10 is input, and the matching driving means 12 for impedance matching according to the changed load amount. And a microcomputer (8A) for controlling the tentable motor (4) and the power supply unit (7) while controlling driving. 제1항에 있어서, 상기 부하 변동 감지수단(10)은, 상기 전원부(7)로부터 마그네트론(5)에 공급되는 부하 전류(ip)의 변화를 감지하는 변류기(CTI)와, 상기 변류기(CTI)로 감지된 전류(ip′)를 직류로 정류하여 마이컴(8A)에 공급하는 정류회로(10A)로 구성된 것을 특징으로 하는 전자레인지의 부하 자동 정합 장치.The current transformer CTI of claim 1, wherein the load variation detecting means 10 detects a change in the load current ip supplied from the power supply unit 7 to the magnetron 5, and the current transformer CTI. Load rectification device for a microwave oven, characterized in that the rectifier circuit (10A) for rectifying the current (ip ') detected by the direct current to supply to the microcomputer (8A). ※ 참고사항 최초출원 내용에 의하여 공개하는 것임.※ Note The disclosure is based on the initial application.
KR1019940002735A 1993-09-23 1994-02-16 Load sensing device of a microwave oven Expired - Fee Related KR0133085B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019940002735A KR0133085B1 (en) 1994-02-16 1994-02-16 Load sensing device of a microwave oven
JP6254764A JP2627730B2 (en) 1993-09-23 1994-09-22 Automatic matching device for microwave oven
US08/311,017 US5512736A (en) 1993-09-23 1994-09-23 Auto-load impedance matching device of a microwave oven
CN94113684A CN1063608C (en) 1993-09-23 1994-09-23 Auto-load matching device of a microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940002735A KR0133085B1 (en) 1994-02-16 1994-02-16 Load sensing device of a microwave oven

Publications (2)

Publication Number Publication Date
KR950025341A true KR950025341A (en) 1995-09-15
KR0133085B1 KR0133085B1 (en) 1998-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940002735A Expired - Fee Related KR0133085B1 (en) 1993-09-23 1994-02-16 Load sensing device of a microwave oven

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100653092B1 (en) * 1999-12-09 2006-12-01 삼성전자주식회사 Power supply control device of DC microwave oven and its method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3280225B1 (en) 2016-08-05 2020-10-07 NXP USA, Inc. Defrosting apparatus with lumped inductive matching network and methods of operation thereof
EP3280224A1 (en) 2016-08-05 2018-02-07 NXP USA, Inc. Apparatus and methods for detecting defrosting operation completion
US10917948B2 (en) 2017-11-07 2021-02-09 Nxp Usa, Inc. Apparatus and methods for defrosting operations in an RF heating system
US10771036B2 (en) 2017-11-17 2020-09-08 Nxp Usa, Inc. RF heating system with phase detection for impedance network tuning
EP3503679B1 (en) 2017-12-20 2022-07-20 NXP USA, Inc. Defrosting apparatus and methods of operation thereof
US10952289B2 (en) 2018-09-10 2021-03-16 Nxp Usa, Inc. Defrosting apparatus with mass estimation and methods of operation thereof
US11800608B2 (en) 2018-09-14 2023-10-24 Nxp Usa, Inc. Defrosting apparatus with arc detection and methods of operation thereof
US11166352B2 (en) 2018-12-19 2021-11-02 Nxp Usa, Inc. Method for performing a defrosting operation using a defrosting apparatus
US11039511B2 (en) 2018-12-21 2021-06-15 Nxp Usa, Inc. Defrosting apparatus with two-factor mass estimation and methods of operation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100653092B1 (en) * 1999-12-09 2006-12-01 삼성전자주식회사 Power supply control device of DC microwave oven and its method

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Publication number Publication date
KR0133085B1 (en) 1998-04-15

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