KR970073518A

KR970073518A - METHOD AND APPARATUS FOR DETECTING HEATER ERRORS IN DLE CLEANERS

Info

Publication number: KR970073518A
Application number: KR1019960017004A
Authority: KR
Inventors: 심효선
Original assignee: 구자홍; Lg 전자주식회사
Priority date: 1996-05-20
Filing date: 1996-05-20
Publication date: 1997-12-10

Abstract

이 발명은 식기세척 건조기에서 히터정지시와 히터구동시의 전압변동을 판별하여 히터의 정상동작 여부를 확인할 수 있도록 하는 히터에러 감지방법을 제공한다.The present invention provides a method of detecting a heater error in a dishwasher-drier, in which a voltage fluctuation at the time of heater stop and at the time of heater driving is discriminated to check whether the heater is operating normally.

이 히터에러 감지방법은 히터정지시의 전원전압과 히터구동시의 전원전압을 감지하는 제1단계와, 히터정지시의 전원전압과 히터구동시의 전원전압을 비교하는 제2단계와, 제2단계결과 히터정지시의 전원전압과 히터구동시의 전원전압이 변화가 없으면 히터에러 신호를 출력하는 제3단계로 구성된다.The heater error detecting method includes a first step of detecting a power supply voltage at the time of heater stop and a power supply voltage at the time of heater driving, a second step of comparing a power supply voltage at the time of heater stop and a power supply voltage at the time of heater driving, And a third step of outputting a heater error signal if there is no change in the power supply voltage at the time of heater stop and the power supply voltage at the time of heater driving as a result of the step.

따라서, 히터구동부의 이상 등으로 인해 히터가 구동되지 않거나 또는 히터가 계속 동작되는 경우의 에러를 모두 검출해낼 수 있는 효과가 있다.Therefore, there is an effect that it is possible to detect all the errors when the heater is not driven or the heater is continuously operated due to the abnormality of the heater driving unit or the like.

Description

METHOD AND APPARATUS FOR DETECTING HEATER ERRORS IN DLE CLEANERS

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 일반적인 식기세척 건조기의 내부구성 블록도, 제2도는 종래 기술에 따른 식기세척 건조기의 히터에러 감지방법을 수행하기 위한 플로우챠트, 제3도는 본 발명에 따른 식기세척 건조기의 히터에러 감지회로의 구성도, 제4도는 본 발명에 따른 식기세척 건조기의 히터에러 감지방법을 수행하기 위한 플로우챠트.FIG. 2 is a flow chart for performing a method of detecting a heater error of a dishwashing drier according to the related art, FIG. 3 is a flowchart illustrating a heater error detecting circuit of a dishwashing / FIG. 4 is a flow chart for performing a method of detecting a heater error in a dishwashing drier according to the present invention; FIG.

Claims

A method for driving a dishwashing / drying machine, comprising: a first step of detecting a power supply voltage at the time of heater stop and a power supply voltage at the time of heater driving; and a step of controlling the power supply voltage at the time of stopping the heater and the power supply voltage And a third step of outputting a heater error signal as a result of the second step.

2. The method according to claim 1, wherein the second step comprises the steps of: detecting and comparing a decrease amount of the power supply voltage value when the heater is stopped from variations in the power supply voltage varying according to the operating state of the heater; The method of claim 1, further comprising the step of detecting and comparing the detected temperature of the heater and the temperature of the heater.

The method as claimed in claim 1, wherein the third step is to output a heater driving error signal if the power source voltage at the time of heater stop and the power source voltage at the time of heater driving do not change.

A dish washer / dryer having a heater includes a power supply voltage detecting means for detecting a change in a power supply voltage value according to a driving state of the heater, thereby detecting a malfunction of the heater. .

The dish washer / dryer as claimed in claim 4, wherein the power supply voltage sensing means rectifies and smoothens the two cut-off voltages of the power supply circuit and distributes the voltage to a resistor, and the divided voltage is connected to the A / D port of the microcomputer Heater error detection device.

※ Note: It is disclosed by the contents of the first application.