KR0118347Y1 - Slow acting relay lmproving circuit of microwave oven - Google Patents
Slow acting relay lmproving circuit of microwave ovenInfo
- Publication number
- KR0118347Y1 KR0118347Y1 KR92017969U KR920017969U KR0118347Y1 KR 0118347 Y1 KR0118347 Y1 KR 0118347Y1 KR 92017969 U KR92017969 U KR 92017969U KR 920017969 U KR920017969 U KR 920017969U KR 0118347 Y1 KR0118347 Y1 KR 0118347Y1
- Authority
- KR
- South Korea
- Prior art keywords
- relay
- microwave oven
- high frequency
- power supply
- microcomputer
- Prior art date
Links
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
- H05B6/666—Safety circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
전자렌지의 슬로우 액팅 릴레이부의 개선회로에 관한 것으로서, 특히 고내등, 팬모터 및 고주파 발진부를 구비한 전자렌지에 있어서, 전자렌지의 전체시스템을 제어하는 마이콤과, 마이콤의 일 제어신호에 의해 온/오프되는 릴레이(RY1)(RY2)(RY3)를 갖는 메인PCB와, 릴레이(RY1)(RY2)(RY3)의 일측에 각각 연결되고 고내등, 팬모터 및 고주파 발진부에 연결된 전원전압과, 릴레이(RY1)(RY2)(RY3)의 일측에 연결되고 전원 전압에 연결된 저항(R)과, 전원전압의 타측에 연결되는 휴즈(F) 및 안전스위치(SW1)와, 안전스위치(SW1)에 연결되고 릴레이(RY2)와 고내등, 팬모터 및 고주파 발진부를 선택하는 모니터 스위치(SW2)를 포함하여 마이콤으로 제어함으로 확실한 서어지 전류제거가 가능하며, 기존에 사용하던 메인 PCB에 소형 릴레이만 추가하고 저항(R)만 달아동작이 가능하므로 슬로우 액팅 릴레이부의 추가에 따른 조립작업의 불편함을 없앨 수 있고, 공수절감 및 릴레이의 소형화, 릴레이부의 브라켓 삭제를 통한 원가절감 효과가 클 뿐만아니라 제품의 신뢰성을 향상시키는데 있다.In particular, the present invention relates to an improved circuit of a slow acting relay of a microwave oven, in particular, a microwave oven including a high-light lamp, a fan motor, and a high frequency oscillator, the microcomputer controlling the entire system of the microwave oven and on / off by one control signal of the microcomputer. A main PCB having relays RY1, RY2, and RY3, a power supply voltage connected to one side of the relays RY1, RY2, and RY3, respectively, connected to a high internal lamp, a fan motor, and a high frequency oscillator, and a relay RY1. A resistor (R) connected to one side of (RY2) and (RY3) and connected to a power supply voltage, a fuse (F) and a safety switch (SW1) connected to the other side of the power supply voltage, and a safety switch (SW1) connected to a relay ( Microcomputer control including RY2) and monitor switch (SW2) for selecting high internal light, fan motor and high frequency oscillator, it is possible to reliably remove the surge current. Fully capable of operation Slow and eliminates the inconvenience of acting relay additional assembly work of the unit, the cost savings through downsizing, the relay portion of the bracket remove airborne relay and greater savings as well as improving the reliability of the product.
Description
제1도는 본 고안에 따른 회로 배선도,1 is a circuit wiring diagram according to the present invention,
제2도는 종래의 회로도.2 is a conventional circuit diagram.
*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1:마이콤2:메인 PCB부1: Microcomputer 2: Main PCB
3:고주파 발진부4:RY1∼RY3:릴레이.3: High frequency oscillation part 4: RY1-RY3: Relay.
본 고안은 전자렌지의 초기 전원 투입시 서어지 전류에 의하여 하우스 브레이커(HOUSE BREAKER)가 오프되는 것을 방지하기 위한 슬로우 액팅(SLOW ACTING) 릴레이부에 관한 것으로, 특히 기존에 사용되던 슬로우 액팅 릴레이부를 없애고 메인 PCB에 소형의 릴레이를 추가하여 이를 마이콤의 제어로 초기 서어지전류를 제거함으로써 비용 절감과 신뢰성을 향상 시킨 전자렌지의 슬로우 액팅 릴레이부의 개선회로에 관한 것이다.The present invention relates to a slow acting relay unit for preventing the house breaker from turning off due to surge current when the microwave is initially turned on. It is an improvement circuit of the slow acting relay part of the microwave oven, which adds a small relay to the main PCB and removes the initial surge current by controlling the microcomputer, thereby improving the cost and reliability.
종래의 문제점을 제2도를 통하여 살펴보면, 전자렌지에 전원(AC)이 인가되면, 마이크로컴퓨터(이하 마이콤이라함)(1)는 그의 출력포트(P1)(P2)를 통해 일정제어된 신호를 출력하여 메인 PCB부(2)의 릴레이 접점(RY1)(RY2)를 단속 제어하고 그 결과 고내등(L) 및 팬모터(M) 또는 고주파 발진부(3)에 전원(AC)을 인가하여 구동시키게 된다.Looking at the conventional problem through the Figure 2, when the power source (AC) is applied to the microwave oven, the microcomputer (hereinafter referred to as microcomputer) (1) is a signal controlled constant through its output port (P1) (P2) It outputs and intermittently controls the relay contacts RY1 and RY2 of the main PCB section 2, and as a result, the power source AC is applied to the high-light L and the fan motor M or the high frequency oscillator 3 to drive. .
이때, 마이콤(1)의 출력포트(P1)로 일정신호가 출력되며 릴레이(RY1) 접점이 온되고, 출력포트(P2)를 통해 일정신호가 출력되어 릴레이(RY2) 접점이 온되어 고주파 발진부(3)로 전원(AC)을 인가하면 전류는 슬로우 액팅 릴레이부(4)의 저항(R0)을 통해 고압트랜스(TS)의 일차측에 인가되며, 고압트랜스(TS)에 걸리는 전압이 저항(R0)에 정격전압보다 걸림에 의해 초기 서어지 전류가 제거된다.At this time, a constant signal is output to the output port P1 of the microcomputer 1 and the relay RY1 contact is turned on, and a constant signal is output through the output port P2 so that the relay RY2 contact is turned on to generate a high frequency oscillator ( 3) When the power source AC is applied, the current is applied to the primary side of the high voltage transformer TS through the resistor R0 of the slow acting relay unit 4, and the voltage applied to the high voltage transformer TS is applied to the resistor R0. ), The initial surge current is removed by catching more than the rated voltage.
그 후 일정시간(약 20m sec) 경과후 릴레이(RY3) 접점을 통해 흐르게 되고 고압트랜스(TS)를 거쳐 고주파 발진부(3)에 고압을 인가하여 고주파를 발진시킴으로써 초기 서어지 전류를 방지 하는 것이다.After that, after a certain time (about 20m sec), the current flows through the relay (RY3) contact point, and a high frequency is applied to the high frequency oscillator 3 through the high voltage transformer TS to oscillate the high frequency to prevent the initial surge current.
그러나, 이와 같은 종래의 기술은 슬로우 액팅 릴레이부(4)를 필연적으로 구성함에 따라 그 구조가 커서 작은 전자렌지의 세트에 취부하기가 곤란하였고, 릴레이(RY3)의 접점구조에 따라 초기 서어지 전류를 감소시키지 못하여 지연타임(DELAY TIME)이 제대로 지켜지지 않아 하우스 브레이커가 떨어지는 문제점이 속출할 뿐아니라, 별도의 릴레이부(4)를 추가해야 됨으로써 비용이 상승하는 결점을 갖고 있었다.However, this conventional technique is difficult to attach to a set of small microwave oven because the structure of the slow acting relay portion 4 is inevitably large, the initial surge current according to the contact structure of the relay (RY3) The delay time (DELAY TIME) is not properly maintained because it does not reduce the problem that the house breaker falls down, as well as the additional relay unit (4) has to be added, the cost has a drawback.
따라서 본 고안의 목적은 상기한 문제점을 해결하기 위하여 안출된 것으로, 기존에 사용하던 슬로우 액팅 릴레이부를 없애고, 저항과 메인 PCB에 소형의 릴레이 하나를 추가하되, 슥ㄹ로우 액팅 작용을 위한 상기 릴레이의 구동을 마이콤의 제어로 행함으로써, 비용절감 및 서어지 전류의 제거에 대한 신뢰성을 확보할 수 있도록 한 전자렌지의 슬로우 액팅 릴레이부의 개선회로를 제공함에 있다.Therefore, the object of the present invention was devised to solve the above problems, and removes the slow acting relay part used in the past, and adds a small relay to the resistor and the main PCB, but the relay acts for the slow acting action. The present invention provides an improvement circuit of a slow acting relay part of a microwave oven which can be driven under the control of a microcomputer to secure reliability for cost reduction and surge current elimination.
이하, 본 고안에 따른 전자렌지의 슬로우 액팅(SLOW ACTING) 릴레이부의 개선회로의 바람직한 일 실시예를 첨부한 도면을 참조하여 설명한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the improvement circuit of the slow acting relay unit of the microwave oven according to the present invention will be described.
제1도는 본 고안에 따른 회로 배선도이다.1 is a circuit wiring diagram according to the present invention.
제1도를 참조하면, 본 고안에 따른 전자렌지의 슬로우 액팅(SLOW ACTING)릴레이부의 개선회로는 전자렌지의 전체시스템을 제어하는 마이콤(1)과, 마이콤(1)의 제어신호에 의해 온/오프되는 릴레이(RY1)(RY2)(RY3)를 갖는 메인PCB(2)와, 릴레이(RY1)(RY2)(RY3)의 일측에 각각 연결되고 고내등(L), 팬모터(FM) 및 고주파 발진부(3)에 연결된 전원전압(AC)과, 릴레이(RY1)(RY2)(RY3)의 일측에 연결되고 전원전압에 연결된 저항(R)과, 전원전압(AC)의 타측에 연결되는 휴즈(F) 및 안전스위치(SW1)와, 안전스위치(SW1)에 연결되고 릴레이(RY2)와 고내등(L), 팬모터(FM) 및 고주파 발진부(3)를 선택하는 모니터 스위치(SW2)로 구성된다.Referring to FIG. 1, the improvement circuit of the slow acting relay unit of the microwave oven according to the present invention is controlled by the microcomputer 1 and the control signal of the microcomputer 1 that control the entire system of the microwave oven. The main PCB 2 having the relays RY1, RY2, and RY3 that are turned off, and connected to one side of the relays RY1, RY2, and RY3, respectively, and have a high internal light L, a fan motor FM, and a high frequency oscillator. (3), the power supply voltage (AC) connected to one side of the relay (RY1) (RY2) (RY3) and the power supply voltage (AC) connected to the power supply voltage, and the fuse (F) connected to the other side of the power supply voltage (AC). ) And a safety switch SW1, and a monitor switch SW2 connected to the safety switch SW1 and selecting the relay RY2, the internal lamp L, the fan motor FM, and the high frequency oscillation unit 3.
상기 같이 구성된 본 고안에 따른 전자렌지의 슬로우 액팅 릴레이부의 개선회로의 구성을 상세히 설명하면, 전원전압(AC)의 일측에 휴즈(F), 안전스위치(SW1), 모니터 스위치(SW2), 고내등(L), 팬모터(M)가 연결됨과 동시에 고압트랜스(TS) 일차측에 접속된다.Referring to the configuration of the improved circuit of the slow acting relay unit of the microwave oven according to the present invention configured as described above, one side of the power supply voltage (AC) fuse (F), safety switch (SW1), monitor switch (SW2), high internal light ( L) and the fan motor M are connected and connected to the primary side of the high voltage transformer TS.
또한, 상기 전원전압(AC)의 타측에 메인 PCB부(2)의 릴레이(RY1)(RY3)의 일 접점에 접속되며, 동시에 저항(R)을 통해 릴레이(RY2)의 일접점 및 상기 모니터 스위치(SW2)의 타접점(b)에 접속된다.In addition, the other side of the power supply voltage (AC) is connected to one contact of the relay (RY1) (RY3) of the main PCB unit 2, at the same time through the resistor (R) one contact of the relay (RY2) and the monitor switch It is connected to the other contact point b of (SW2).
상기 릴레이(RY1)(RY2)의 접점의 타단이 서로 접속됨과 동시에 고압트랜스(TS)의 일차측 일단에 접속되고, 릴레이(RY3)의 또다른 접점은 고내등(L) 및 팬모터(FM)에 접속된다.The other ends of the contacts of the relays RY1 and RY2 are connected to each other, and are connected to one end of the primary side of the high voltage transformer TS, and another contact of the relay RY3 is connected to the lamp L and the fan motor FM. Connected.
그리고 상기 고압트랜스(TS)의 이차측에는 고주파 발진부(3)가 접속되어 고주파를 발진시키고, 프로그램을 내장한 마이콤(1)은 출력포트(P1)(P2)(P3)에 릴레이(RY1)(RY2)(RY3)가 연결되어 있다.A high frequency oscillation unit 3 is connected to the secondary side of the high voltage transformer TS to oscillate high frequency, and the microcomputer 1 incorporating a program is connected to the output ports P1, P2, P3, and relays RY1, RY2. (RY3) is connected.
상기와 같이 구성된 본 고안에 따른 전자렌지의 슬로우 액팅 릴레이부의 개선회로의 동작을 설명하면 다음과 같다.Referring to the operation of the improved circuit of the slow acting relay unit of the microwave oven according to the present invention configured as described above are as follows.
먼저, 입력 전원 전압(AC)이 인가되고, 전자렌지의 초기 운전상태인 안전스위치(SW1)가 온 상태이고 모니터 스위치(SW2)의 상태가 c-a로 접속된 상태일 때 마이콤(1)은 고주파 출력을 얻기위해 릴레이(RY1)(RY2)를 구동하게 되는데 우선, 출력포트(P2)로 일정신호를 출력하여 릴레이(RY2)의 접점을 온 시킴으로써 전원(AC)에 따른 전류는 휴즈(F), 안전스위치(SW1), 모니터 스위치(SW2)를 통해서 고압트랜스(TS)의 일차측에 가해지고, 또한, 저항(R), 릴레이(RY2)접점을 통해 트랜스(TS) 일차측의 타단에 가해지되, 초기에 발생될수 있는 서어지 전류를 저항(R)에서 제거해 준다.First, when the input power supply voltage AC is applied, the safety switch SW1 which is the initial operation state of the microwave oven is turned on, and the state of the monitor switch SW2 is connected to ca, the microcomputer 1 outputs a high frequency. The relay RY1 and RY2 are driven to obtain the output signal. First, by outputting a constant signal to the output port P2 and turning on the contact of the relay RY2, the current according to the power source AC is fuse F and safety. It is applied to the primary side of the high-voltage transformer TS through the switch SW1 and the monitor switch SW2, and to the other end of the primary side of the transformer TS through the contact of the resistor R and the relay RY2. This eliminates the surge current that may be generated initially from the resistor (R).
이후 일정시간(약 20m sec)이 경과후 마이콤(1)은 출력포트(P1)로 일정신호를 출력하여 릴레이(RY1) 접점을 오프 시킨다.After a predetermined time (about 20m sec) has elapsed, the microcomputer 1 outputs a constant signal to the output port P1 to turn off the relay RY1 contact.
따라서 전류는 저항(R)을 통하지 않고 릴레이(RY1) 접점을 통해 트랜스(TS)의 일차측에 인가되므로 정상적으로 고주파 발진부(3)가 출력할 수 있는 것이다.Therefore, since the current is applied to the primary side of the transformer TS through the relay RY1 contact without passing through the resistor R, the high frequency oscillator 3 can output normally.
이상에서와 같이 본 고안은 슬로우 액팅을 위한 릴레이의 동작을 마이콤으로 제어함으로 확실한 서어지 전류제거가 가능하며, 기존에 사용하던 메인 PCB에 소형 릴레이만 추가하고 저항(R)만 달아동작이 가능하므로 슬로우 액팅 릴레이부의 추가에 따른 조립작업의 불편함을 없앨 수 있고, 공수절감 및 릴레이의 소형화, 릴레이부의 브라켓 삭제를 통한 원가절감 효과가 클 뿐만아니라 제품의 신뢰성을 향상시킬 수 있는 이점이 있다.As described above, the present invention can control the operation of the relay for slow acting with a microcomputer, so that the surge current can be eliminated, and only a small relay is added to the main PCB that was used and only the resistor (R) can be attached. It is possible to eliminate the inconvenience of assembling work due to the addition of the slow acting relay unit, the cost saving effect through the reduction of airborne and miniaturization of the relay, the removal of the bracket of the relay unit, as well as to improve the reliability of the product.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92017969U KR0118347Y1 (en) | 1992-09-22 | 1992-09-22 | Slow acting relay lmproving circuit of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR92017969U KR0118347Y1 (en) | 1992-09-22 | 1992-09-22 | Slow acting relay lmproving circuit of microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940008152U KR940008152U (en) | 1994-04-18 |
| KR0118347Y1 true KR0118347Y1 (en) | 1998-07-15 |
Family
ID=19340438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR92017969U KR0118347Y1 (en) | 1992-09-22 | 1992-09-22 | Slow acting relay lmproving circuit of microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0118347Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990016403A (en) * | 1997-08-14 | 1999-03-05 | 윤종용 | Handler with torsion-resistant transfer |
-
1992
- 1992-09-22 KR KR92017969U patent/KR0118347Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR940008152U (en) | 1994-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6683766B1 (en) | DC arc detection and prevention circuit and method | |
| CA2238442A1 (en) | Wall type microwave oven and output control method thereof | |
| WO2001054262A9 (en) | Railway switch machine motor control apparatus | |
| KR0118347Y1 (en) | Slow acting relay lmproving circuit of microwave oven | |
| EP0973239A3 (en) | Protective circuit | |
| GB2344936A (en) | Starter switch | |
| KR200142399Y1 (en) | Overload checking device as a battery switch of a bus | |
| KR940010820B1 (en) | Apparatus and method of high voltage trans control for electronic range | |
| KR900000093Y1 (en) | Interlock and power control circuit for electronic range | |
| KR100313047B1 (en) | Circuit for attenuating inrush current in microwave oven | |
| KR0153625B1 (en) | Rush current prevention apparatus for microwave oven | |
| KR950008500Y1 (en) | Voltage sovrce control device of car | |
| KR200156069Y1 (en) | Over current prevention apparatus | |
| KR910001300Y1 (en) | Pop noise reduction circuit in time of switching power supply | |
| KR100347098B1 (en) | Control circuit for microwave oven | |
| KR940000203Y1 (en) | Maloperation preventing circuit used plc | |
| KR910005755Y1 (en) | Discharging circuit for programmable controller | |
| KR880004160Y1 (en) | Voltage compensating circuit of electron range | |
| KR20050033374A (en) | A relay control method of microwave oven | |
| KR940002252Y1 (en) | Error operating prevent circuit of microwave oven | |
| KR850002655Y1 (en) | Error rejecting circuit | |
| KR19990024163U (en) | Power supply circuit of vehicle | |
| KR19980049704U (en) | Microwave electric shock prevention device | |
| KR910006306Y1 (en) | Television | |
| KR100205754B1 (en) | Power control circuit for microwave oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| LAPS | Lapse due to unpaid annual fee |