KR950006341A

KR950006341A - False voltage warning device input to microwave oven

Info

Publication number: KR950006341A
Application number: KR1019930017119A
Authority: KR
Inventors: 정길섭
Original assignee: 이헌조; 주식회사 금성사
Priority date: 1993-08-31
Filing date: 1993-08-31
Publication date: 1995-03-20

Abstract

본 발명은 전자레인지에 입력되는 오전압 경고장치에 관한 것으로, 사용자의 실수에 의하여 220V 전원이 전자레인지에 인가될 때 상기 전자레인지를 보호하기 위해 바리스터(VR)가 파손되면서 220V 전원 입력을 차단하지만 사용자가 이를 확인하지 못해 220V 전원를 계속 인가시, 퓨우즈(6) 또는 전원트랜스(T)등이 연속적으로 파손되는 문제점을 해결하기 위한 것이다.The present invention relates to a false voltage warning device that is input to the microwave oven, but when the 220V power is applied to the microwave oven by a user mistake, the varistor (VR) breaks to protect the microwave oven, but blocks the 220V power input. This is to solve the problem that the fuse 6 or the power transformer T is continuously damaged when the user continues to apply the 220V power because it is not confirmed.

본 발명은 이와같은 종래 문제점을 해결하기 위하여 110V에 사용하는 전자레인지에 220V 전원이 인가되었을 때 경고음이 발생하면서 디스플레이부에 오전압 입력을 표시하여 사용자가 경고음 및 오전압 입력 표시에 의해 전원코드를 분리하여 오전압에 의한 전자레인지 파손을 미연에 방지하도록 한 것으로 전자레인지등에 적용한다.The present invention is to solve the conventional problem, when the 220V power is applied to the microwave oven used for 110V while generating a warning sound on the display to display the erroneous voltage input by the user to display the power cord by the warning sound and erroneous voltage input indication It is separated to prevent damage to the microwave oven due to mis-voltage and is applied to microwave ovens.

Description

False voltage warning device input to microwave oven

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

제1도는 종래 오전압 방지장치가 구비된 전자레인지의 구동회로도,1 is a driving circuit diagram of a microwave oven equipped with a conventional overvoltage protection device,

제2도는 본 발명의 오전압 방지장치가 구비된 전자레인지의 구동회로도,2 is a driving circuit diagram of a microwave oven equipped with a device for preventing an overvoltage of the present invention;

제3도의 (가) (나)는 본 발명 전자레인지의 전압 파형도,(A) (B) of Figure 3 is a voltage waveform diagram of the microwave oven of the present invention,

제4도의 (가) (나)는 본 발명 오전압 입력시 전자레인지의 전압 파형도,(A) and (b) of FIG. 4 are voltage waveform diagrams of a microwave oven at the time of inputting an incorrect voltage of the present invention.

제5도는 본 발명 전자레인지에 입력되는 오전압 경고과정을 보인 플로우챠트.Figure 5 is a flow chart showing an error warning process of the voltage input to the microwave oven of the present invention.

Claims

A voltage fluctuation detection unit 12 which detects when an overvoltage is applied due to a mistake of a user when power is supplied to the microwave oven, and a warning sound generating unit 15 generating a warning sound to inform the user that an overvoltage has been input; The display unit 16 flashes to visually notify the user that the overvoltage is input, and receives the detection signal of the voltage fluctuation detecting unit 12 to control the alarm sound generation and the overvoltage input display. Mis-voltage warning device input to the microwave oven consisting of a microcomputer (14) for controlling the key matrix (17) for selecting each function of the operation.

※ Note: The disclosure is based on the initial application.