KR970006378B1 - Low voltage supply device of microwave oven - Google Patents
Low voltage supply device of microwave oven Download PDFInfo
- Publication number
- KR970006378B1 KR970006378B1 KR1019940003742A KR19940003742A KR970006378B1 KR 970006378 B1 KR970006378 B1 KR 970006378B1 KR 1019940003742 A KR1019940003742 A KR 1019940003742A KR 19940003742 A KR19940003742 A KR 19940003742A KR 970006378 B1 KR970006378 B1 KR 970006378B1
- Authority
- KR
- South Korea
- Prior art keywords
- fan motor
- winding
- low voltage
- microwave oven
- low
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
-
- 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
Abstract
Description
제1도는 본 발명에 의한 저전압 전원의 정류회로 구성도.1 is a block diagram of a rectifier circuit of a low voltage power supply according to the present invention.
제2도는 본 발명에 의한 저압트랜스겸 냉각용 모터 팬모터의 구조도.2 is a structural diagram of a low-voltage transformer and cooling motor fan motor according to the present invention.
*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 저압트랜스부 2 : 정류부1: low voltage transformer 2: rectifier
3 : 평활부 4 : 정전압부3: smoothing part 4: constant voltage part
10 : 팬모터 11 : 코아10: fan motor 11: core
12 : 절연브라켓트 13 : 고정자권선12: insulation bracket 13: stator winding
14 : 절연재 15 : 2차권선14: insulation material 15: secondary winding
16 : 2차권선 출력단자16: 2nd winding output terminal
본 발명은 전자렌지의 냉각용 팬모터에 관한 것으로, 특히 팬모터 구동권선 외측에 2차권선을 권회시켜 저압트랜스를 구성하여 전자렌지의 각 부품 및 회로부의 저전압 전원을 공급하도록 한 전자렌지의 저압트랜스겸 냉각용 팬모터에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan motor for cooling a microwave oven. In particular, a low voltage transformer is formed by winding a secondary winding outside the fan motor driving winding to supply a low voltage power supply to each component and circuit of the microwave oven. It relates to a trans-cooling fan motor.
일반적으로 전자식 전자렌지에 있어서, 110V/220V의 가정용 전원을 마이크로 프로세서, 저전압 반도체 소자 및 트레이모터를 구동시키는 저전압(예; 5V, 12V, 24V등)의 전원으로 변환시키기 위해서는 저압트랜스가 필요하게 된다.In general, in a microwave oven, a low voltage transformer is required to convert a 110V / 220V home power supply into a low voltage power supply (eg, 5V, 12V, 24V, etc.) that drives a microprocessor, a low voltage semiconductor device, and a tray motor. .
또한, 저전압을 필요로 하는 소자들은 주로 메인회로기판(PCB)에 실장되므로, 전압트랜스도 그 메인 콘트롤회로 기판상에 설치되는 것이 보통이나, 교류부와 직류부간의 상호 간섭을 없애기 위한 간격유지 등이 필요하기 때문에 메인회로부와는 일정한 간격을 두거나, 별도의 기판에 실장하도록 되어 있다.In addition, since the devices requiring low voltage are mainly mounted on the main circuit board (PCB), the voltage transformer is usually installed on the main control circuit board, but the gap is maintained to eliminate mutual interference between the AC section and the DC section. This is necessary, so that the main circuit section is spaced apart or mounted on a separate substrate.
그러나, 저압트랜스는 다른 반도체 소자에 비해 그 부피가 월등히 크기 때문에 공간차지가 커지고, 고압을 저압으로 강압시키기 위해 많은 수의 권선이 권회되어 있으므로, 그 권선에 전류가 흐를 때 발생되는 자기장이 주변의 반도체 소자(예; 마이크로프로세서 등)에 잡음으로 악영향을 끼칠 수 있는 문제점이 있으며, 원가상승의 요인도 된다.However, the low voltage transformer has a much larger volume than other semiconductor devices, so the space charge is large, and a large number of windings are wound to lower the high voltage to the low pressure. Therefore, the magnetic field generated when current flows in the winding There is a problem that may adversely affect the semiconductor device (for example, microprocessor, etc.) by noise, and also cause the cost rise.
본 발명은 이와 같은 종래 문제점을 감안하여 저압트랜스를 별도로 구비시키지 않고서 냉각용 팬모터의 구동용 권선에 2차 권선을 권회하여 냉각용 팬모터를 저압트랜스화함으로서 원가절감, 메인회로기판의 공간활용 및 잡음에 의한 악영향을 방지할 수 있도록 한 전자렌지의 저압트랜스겸 냉각용 팬모터를 제공함에 목적이 있다.In view of the conventional problems, the present invention can reduce the cost and space utilization of the main circuit board by winding the secondary winding around the driving winding of the cooling fan motor without having a separate low voltage transformer. And it is an object to provide a low-voltage transformer and cooling fan motor of a microwave oven to prevent the adverse effects of noise.
이와 같은 본 발명의 목적은 전자렌지의 전장실에 설치되는 냉각용 팬모터의 고정자권선을 1차권선으로 하고, 그 외측에 2차권선을 권회시켜 냉각용 팬 모터를 저압트랜스화함으로써 달성되는 것이다.This object of the present invention is achieved by making the stator winding of the cooling fan motor installed in the microwave oven as a primary winding and winding the secondary winding outside the low voltage transformer of the cooling fan motor. .
이하, 본 발명에 의한 전자렌지의 트레이모터 구동전원 발생장치의 실시예를 첨부된 도면을 참조해서 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings an embodiment of a tray motor driving power generator for a microwave oven according to the present invention will be described in detail.
제2도는 본 발명에 의한 저압트랜스겸 냉각용 팬모터의 구조도로서, 이에 도시된 바와 같이 본 발명은 코아(Core)(11)의 일부가 절연브라켓트(!2)에 의해 감싸지고, 그 절연브라켓트(12)의 둘레에 팬모터 구동용 고정자권선(13)이 권회되어 이루어진 전자렌지의 냉각용 팬모터에 있어서, 냉각용 팬모터의 고정자권선(13)의 외측에 절연재(14)를 씌우고, 그 절연재(14)의 외측에 상기 팬모터 구동용 고정자권선(13)과의 소정의 권선비를 가지는 2차권선(15)을 권회하며, 상기 2차권선의 단부에 출력단자(16)를 연결하여 소정이 교류 저전압 전원을 얻어내는 저압트랜스부를 냉각용 팬모터에 구성한 것이다.2 is a structural diagram of a low-voltage transformer and cooling fan motor according to the present invention, as shown in the present invention, a part of the core 11 is wrapped by an insulating bracket (! 2), and the insulating bracket In a cooling fan motor for a microwave oven in which a stator winding 13 for driving a fan motor is wound around a periphery of 12, an insulating material 14 is placed on the outside of the stator winding 13 of a cooling fan motor. The secondary winding 15 having a predetermined winding ratio with the fan motor driving stator winding 13 on the outside of the insulating material 14 is wound, and the output terminal 16 is connected to the end of the secondary winding to predetermined The low voltage transformer unit which obtains this AC low voltage power supply is comprised in the cooling fan motor.
여기서 상기 2차권선(15)에 대해 상기 고정자권선(13)은 1차권선이 되는 것이다.Here, the stator winding 13 becomes the primary winding with respect to the secondary winding 15.
그리고 제1도는 본 발명에 의한 저전압 전원의 정류회로 구성도로서, 냉각용 팬모터의 저압트랜스부에서 얻어진 교류 저전압을 정류부(2) 및 평활부(3)를 통해 직류로 정류하여 복수개의 정전압부(4)에 의해 마이크로프로세서, 릴레이구동용 직류전원 및 각 센서 등과 같은 각 부하들을 구동시키기 위한 직류전원 등 레벨이 다른 직류전원(예; 5V, 9V, 12V DC)을 각기 안정화시켜 출력하도록 되어 있다.FIG. 1 is a block diagram of a rectifier circuit for a low voltage power supply according to the present invention, wherein the AC low voltage obtained from the low voltage transformer section of the cooling fan motor is rectified by DC through the rectifying section 2 and the smoothing section 3 to provide a plurality of constant voltage sections. (4) Stabilizes and outputs DC power sources (eg 5V, 9V, 12V DC) with different levels such as DC power supply for driving each load such as microprocessor, relay driving DC power supply and sensor. .
이와 같이 구성된 본 발명에 의한 전자렌지의 트레이모터 구동장치의 작용 및 효과를 설명하면 다음과같다.The operation and effects of the tray motor driving apparatus of the microwave oven according to the present invention configured as described above are as follows.
팬모터(10)에는 아마츄어의 회전력을 발생시키기 위해 코아(11)에 권회된 고정자권선(13)이 존재하므로, 그 팬모터 구동용 고정자권선(13)의 외측에 절연재(14)를 감싼 후, 소정이 권선비로 2차권선(15)을 권회시켜 그 2차권선(15)을 통하여 저전압을 발생시키도록 되어 있다.Since the stator winding 13 wound around the core 11 exists in the fan motor 10 to generate the rotational force of the armature, the insulation material 14 is wrapped around the stator winding 13 for driving the fan motor. The predetermined winding is wound around the secondary winding 15 at a turns ratio to generate a low voltage through the secondary winding 15.
즉, 팬모터(10)가 고정자권선(13)에 전원이 인가되면, 그 고정자 권선(13)과 코아(11) 및 아마츄어의 상호작용에 의해 팬모터가 회전되게 된다. 이때, 그 고정자권선(13)에 교류전원이 흐르게 되면, 2차권선(15)에 소정의 교류전원이 유기되며, 그 고정자권선(13)과, 2차권선(15)의 권선비에 의해 2차권선(15)의 출력단자(16)에 소정의 교류 저전압(예; 24V AC)이 출려된다.That is, when the fan motor 10 is applied to the stator winding 13, the fan motor is rotated by the interaction between the stator winding 13, the core 11 and the amateur. At this time, when AC power flows through the stator winding 13, a predetermined AC power is induced in the secondary winding 15, and the secondary power is changed by the turns ratio between the stator winding 13 and the secondary winding 15. A predetermined AC low voltage (eg, 24V AC) is supplied to the output terminal 16 of the winding 15.
이와 같이 팬모터와 일체형으로 이루어진 전압트랜스부터 얻어진 소정의 교류 저전압은, 그 교류 저전압을 필요로 하는 부품(예; 저압용 트레이모터 등)에 공급할 수 있게 된다.Thus, the predetermined AC low voltage obtained from the voltage transformer integrated with the fan motor can be supplied to a component (for example, a low voltage tray motor, etc.) requiring the AC low voltage.
그리고, 그 팬모터와 일체형으로 이루어진 저압트랜스부에서 얻어진 저전압 교류전원은 정류부(2)에서 전파정류되고, 평활수(3)를 거쳐 평활된 후, 레귤레이터인 정전압부(4)를 통해서 각각의 부하에 알맞는 적정한 전압으로 강압됨과 아울러 원하는 레벨의 직류전원(예; 5V, 9V, 12V DC)으로 안정화되어 직류전원을 필요로 하는 각 부하에 공급된다.Then, the low voltage AC power source obtained from the low voltage transformer unit integrated with the fan motor is full-wave rectified in the rectifying unit 2, smoothed through the smooth water 3, and then loaded through the constant voltage unit 4 as a regulator. It is stepped down to the appropriate voltage according to the voltage, and stabilized by DC power supply (eg 5V, 9V, 12V DC) of desired level and is supplied to each load requiring DC power.
이상에서 상세히 설명한 바와 같이 본 발명에 의하면, 별도로 사용되던 저압트랜스를 삭제하고, 팬모터에 2차권선을 권회하여 저압트랜스를 대신하므로써 원가절감의 효과가 있으며, 저압트랜스 설치공간이 별도로 필요치 않고, 팬모터와 일체로 형성되어 있으므로 메인회로기판의 설치 공간 활용도를 높일 수 있고, 메인회로기판에서의 저압트랜스로 인한 잡음발생을 방지할 수 있어 마이크로프로세서 등과 같은 반도체 소자의 오동작을 방지할 수 있는 효과가 있다.As described in detail above, according to the present invention, the low pressure transformer used separately is removed, and the secondary winding is wound on the fan motor to replace the low pressure transformer, thereby reducing the cost, and the low pressure transformer installation space is not necessary. Since it is integrally formed with the fan motor, it is possible to increase the utilization of the installation space of the main circuit board and to prevent the occurrence of noise due to the low voltage transformer in the main circuit board, thereby preventing the malfunction of semiconductor devices such as microprocessors. There is.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940003742A KR970006378B1 (en) | 1994-02-28 | 1994-02-28 | Low voltage supply device of microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940003742A KR970006378B1 (en) | 1994-02-28 | 1994-02-28 | Low voltage supply device of microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950025350A KR950025350A (en) | 1995-09-15 |
| KR970006378B1 true KR970006378B1 (en) | 1997-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940003742A KR970006378B1 (en) | 1994-02-28 | 1994-02-28 | Low voltage supply device of microwave oven |
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| Country | Link |
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| KR (1) | KR970006378B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050039246A (en) * | 2003-10-24 | 2005-04-29 | 주식회사 대우일렉트로닉스 | High voltage transformer for both cooling motor combined in microwave oven range |
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1994
- 1994-02-28 KR KR1019940003742A patent/KR970006378B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR950025350A (en) | 1995-09-15 |
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