KR950019242A - Microwave cooling fan motor drive control method and circuit - Google Patents

Microwave cooling fan motor drive control method and circuit Download PDF

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Publication number
KR950019242A
KR950019242A KR1019930029932A KR930029932A KR950019242A KR 950019242 A KR950019242 A KR 950019242A KR 1019930029932 A KR1019930029932 A KR 1019930029932A KR 930029932 A KR930029932 A KR 930029932A KR 950019242 A KR950019242 A KR 950019242A
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KR
South Korea
Prior art keywords
cooling fan
fan motor
driving
microwave oven
transformer
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Application number
KR1019930029932A
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Korean (ko)
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KR960007110B1 (en
Inventor
유학석
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배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930029932A priority Critical patent/KR960007110B1/en
Publication of KR950019242A publication Critical patent/KR950019242A/en
Application granted granted Critical
Publication of KR960007110B1 publication Critical patent/KR960007110B1/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
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • 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
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H05B6/6417—Door interlocks of the microwave heating apparatus and related circuits
    • 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
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/6444—Aspects relating to lighting devices in the microwave cavity

Abstract

본 발명은 전자렌지에 관한 것으로서, 냉각팬 모터와(13)와 트랜스(41)사이에 릴레이 스위치가(61)가 더 구성되어 있으며, 제어회로(70)는 설정된 전자렌지의 구동시간이 종료되거나 구동시간중에 도어가 열린 경우에는 릴레이 스위치(8, 14)를 오프상태로 하고 릴레이 스위치(61)는 소정시간 동안 트랜스(41)에 연결되게 한다. 트랜스(41)는 냉각팬 모터(13)의 정격전압보다 적은 전압을 냉각팬 모터(13)에 인가하므로 냉각팬 모터(13)는 회전수가 감소하여 그 구동잡음이 감소하게 된다. 따라서, 본 발명은 설정된 전자렌지의 구동시간이 종료되거나 구동시간중에 도어가 열리는 경우에는 냉각팬 모터(13)가 저잡음상태에서 고압트랜스(16) 및 마그네트론(50)을 강제 냉각시킬 수 있게 된다.The present invention relates to a microwave oven, and a relay switch (61) is further configured between the cooling fan motor (13) and the transformer (41), and the control circuit (70) ends the driving time of the set microwave. When the door is opened during the driving time, the relay switches 8 and 14 are turned off and the relay switch 61 is connected to the transformer 41 for a predetermined time. Since the transformer 41 applies a voltage less than the rated voltage of the cooling fan motor 13 to the cooling fan motor 13, the cooling fan motor 13 reduces the number of rotations, thereby reducing the driving noise. Therefore, when the driving time of the microwave oven is set or the door is opened during the driving time, the cooling fan motor 13 can force-cool the high voltage transformer 16 and the magnetron 50 in a low noise state.

Description

전자렌지의 냉각팬 모터 구동 제어방법 및 회로.Microwave cooling fan motor drive control method and circuit.

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

제1도는 종래의 전자렌지의 개략적인 회로도.1 is a schematic circuit diagram of a conventional microwave oven.

제2도는 본 발명에 따른 전자렌지의 냉각팬의 모터 구동 제어회로도.2 is a motor drive control circuit diagram of a cooling fan of a microwave oven according to the present invention.

제3도는 본 발명에 따른 전자렌지의 냉각팬 모터 구동 제어방법의 흐름도.3 is a flowchart of a cooling fan motor driving control method of a microwave oven according to the present invention.

Claims (3)

전자렌지의 냉각팬 모터 구동 제어방법에 있어서, 전자렌지의 구동을 제어하는 각종 키신호들을 입력하는 단계와 ; 입력된 키신호들중 전자렌지의 구동을 명령하는 키신호가 포함되어 있는지 판단하는 단계와 ; 구동개시를 명령하는 키신호가 포함되어 있으면 전자렌지의 고내등, 트레이 모터 및 냉각팬 모터와 마그네트론에 전원을 인가하여 구동시키는 단계와 ; 전자렌지의 고내등, 트레이 모터 및 냉각팬 모터와 마그네트론의 구동중에 전자렌지의 도어가 열렸거나 상기 키신호에 의해 설정된 소정시간이 경과하였는지를 판단하는 단계와 ; 전자렌지의 도어가 열렸거나 설정된 소정시간이 경과하면 상기 고내등, 트레이 모터 및 마그네트론의 구동을 정지시키고, 상기 냉각팬 모터에 인가되는 전원 전압을 낮추어 냉각팬 모터의 회전수를 감소시키는 단계와 ; 상기 고내등, 트레이 모터 및 마그네트론의 구동의 정지 후에 소정시간이 경화하면 상기 냉각팬 모터의 구동을 정지시키는 단계를 포함하는 전자렌지의 냉각팬 모터 구동 제어방법.A method for controlling a cooling fan motor driving of a microwave oven, comprising: inputting various key signals for controlling driving of a microwave oven; Determining whether a key signal for driving the microwave is included among the input key signals; If a key signal for driving start is included, driving the lamp by applying power to a lamp, a tray motor, a cooling fan motor, and a magnetron of a microwave oven; Determining whether a door of the microwave oven is opened or a predetermined time set by the key signal has elapsed while the microwave oven lamp, the tray motor and the cooling fan motor and the magnetron are being driven; Stopping driving of the lamp, tray motor, and magnetron when the microwave oven door is opened or a predetermined time elapses, and reducing the number of rotations of the cooling fan motor by lowering a power supply voltage applied to the cooling fan motor; And stopping the driving of the cooling fan motor when a predetermined time is hardened after stopping the driving of the lamp, the tray motor, and the magnetron. 트랜스를 통하여 입력되는 전압으로 구동하며, 제 1 릴레이 스위치의 스위칭상태를 제어하여 트레이 모터 및 냉각팬 모터를 전원과 연결시키는 제어회로를 포함하는 전자렌지의 냉각팬 모터 구동 제어회로에 있어서, 상기 냉각팬 모터를 상기 트랜스의 일차측 코일 또는 상기 제 1 릴레이 스위치에 선택적으로 연결하는 제 2 릴레이 스위치를 더 포함하여 상기 제 1 릴레이 스위치의 스위칭상태에 관계없이 상기 냉각팬 모터에만 상기 트랜스의 입력전압을 인가할 수 있게 한 전자렌지의 냉각팬 모터 구동 제어회로.A cooling fan motor driving control circuit for a microwave oven including a control circuit driving a voltage input through a transformer and controlling a switching state of a first relay switch to connect a tray motor and a cooling fan motor with a power source. And a second relay switch for selectively connecting a fan motor to the primary side coil of the transformer or the first relay switch so that the input voltage of the transformer is applied only to the cooling fan motor regardless of the switching state of the first relay switch. Microwave cooling fan motor drive control circuit. 제 2 항에 있어서, 상기 트랜스로부터 상기 냉각팬에 인가되는 전압은 상기 냉각팬 모터의 정격전압보다 적게 한 전자렌지의 냉각팬 모터 구동 제어회로.The cooling fan motor drive control circuit of claim 2, wherein a voltage applied from the transformer to the cooling fan is less than a rated voltage of the cooling fan motor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930029932A 1993-12-27 1993-12-27 Cooling pan motor controlling method and circuit in microwave oven KR960007110B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930029932A KR960007110B1 (en) 1993-12-27 1993-12-27 Cooling pan motor controlling method and circuit in microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930029932A KR960007110B1 (en) 1993-12-27 1993-12-27 Cooling pan motor controlling method and circuit in microwave oven

Publications (2)

Publication Number Publication Date
KR950019242A true KR950019242A (en) 1995-07-22
KR960007110B1 KR960007110B1 (en) 1996-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930029932A KR960007110B1 (en) 1993-12-27 1993-12-27 Cooling pan motor controlling method and circuit in microwave oven

Country Status (1)

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KR (1) KR960007110B1 (en)

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KR960007110B1 (en) 1996-05-27

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