JPH0479307A - Electronic range - Google Patents
Electronic rangeInfo
- Publication number
- JPH0479307A JPH0479307A JP2194412A JP19441290A JPH0479307A JP H0479307 A JPH0479307 A JP H0479307A JP 2194412 A JP2194412 A JP 2194412A JP 19441290 A JP19441290 A JP 19441290A JP H0479307 A JPH0479307 A JP H0479307A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- capacitor
- transformer
- sheet
- insulating member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 abstract description 21
- 239000000758 substrate Substances 0.000 abstract description 3
- 239000004760 aramid Substances 0.000 abstract description 2
- 229920003235 aromatic polyamide Polymers 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F2038/003—High frequency transformer for microwave oven
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は、昇圧トランスを備え、この昇圧トランスの二
次側にマグネトロン駆動のための駆動回路を備えた電子
レンジに関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a microwave oven equipped with a step-up transformer and a drive circuit for driving a magnetron on the secondary side of the step-up transformer.
（従来の技術）
周知のように、電子レンジでは、昇圧トランスを備え、
この昇圧トランスの二次側にマグネトロン駆動のための
高圧の駆動回路を備えている。(Prior art) As is well known, a microwave oven is equipped with a step-up transformer.
A high-voltage drive circuit for driving the magnetron is provided on the secondary side of this step-up transformer.
上記駆動回路は整流コンデンサおよび倍電圧コンデンサ
を備えて構成されている。このトランスおよびコンデン
サ部分の構造を第５図に示す。昇圧トランス１はプリン
ト基板２に半田付けされており、昇圧トランス１の巻線
ボビン３に取り付けられた基板４の接続端子４ａ、４ｂ
にはコンデンサ５が接続されている。The drive circuit is configured to include a rectifier capacitor and a voltage doubler capacitor. The structure of this transformer and capacitor portion is shown in FIG. The step-up transformer 1 is soldered to a printed circuit board 2, and the connection terminals 4a, 4b of the board 4 attached to the winding bobbin 3 of the step-up transformer 1
A capacitor 5 is connected to.
（発明が解決しようとする課題）
ところで、上記電子レンジでは、昇圧トランスの二次側
が高圧になるため、スパークがもとで電気部品が焼損す
るおそれがあった。(Problems to be Solved by the Invention) By the way, in the microwave oven described above, since the secondary side of the step-up transformer is at a high voltage, there is a risk that electrical components may burn out due to sparks.
すなわち、例えば、上記接続端子４ａとコンデンサ５の
リード線５ａとの半田付は部分にクラックが発生してい
るような場合、そこでスパークが発生し、このスパーク
によって基板４が炭化し、その炭化した部分とコンデン
サ５のリード線５ａとの間にアークが継続して発生し、
そして、そのアークは炭化領域が広がるにつれて高電位
差であるコンデンサ５へ延びると共に、巻線ボビン４に
おける炭化が広がり（そのアークを符号Ａをもって示す
）、この結果、アークＡが順次矢印Ｂ方向へ順次移動す
るようになる。このようにアークが大きく成長すると、
コンデンサが焼損する他に、他の電気部品も焼損するお
それがあり、その対策が待たれていた。That is, for example, if cracks occur in the soldering between the connection terminal 4a and the lead wire 5a of the capacitor 5, sparks will be generated there, and the spark will carbonize the board 4. An arc continues to occur between the capacitor 5 and the lead wire 5a of the capacitor 5,
Then, as the carbonized region expands, the arc extends to the capacitor 5, which has a high potential difference, and the carbonization in the winding bobbin 4 also spreads (the arc is indicated by the symbol A), and as a result, the arc A sequentially moves in the direction of the arrow B. Begins to move. When the arc grows in this way,
In addition to burning out the capacitor, there is a risk that other electrical parts may also burn out, and a countermeasure has been awaited.
本発明は上記事情に鑑みてなされたものであり、その目
的は、アークが発生するようなことがあってもこれを消
弧できて電気部品の焼損を防止でき、しかも簡単な構成
でこれを達成できる電子レンジを提供するにある。The present invention has been made in view of the above circumstances, and its purpose is to extinguish the arc even if it occurs and prevent burnout of electrical parts, and to do so with a simple configuration. We are here to provide you with a microwave oven that is achievable.
［発明の構成コ
（課題を解決するための手段）
本発明は、昇圧トランスを備え、この昇圧トランスの二
次側にマグネトロン駆動のための高圧の駆動回路を備え
たものにおいて、高電位差となる電気部品間に不燃性の
絶縁部材を介在させたところに特徴を有する。[Structure of the Invention (Means for Solving the Problems) The present invention provides a step-up transformer and a high-voltage drive circuit for driving a magnetron on the secondary side of the step-up transformer, in which a high potential difference occurs. The feature is that a nonflammable insulating member is interposed between the electrical components.
（作用）
電気部品の半田付は部分のクラック等によってスパーク
が発生し、これがもとで高電位差の関係にある電気部品
間にアークが発生したとしても、その両電気部品間に不
燃性の絶縁部材が介在するので、アーク距離を長くでき
てこれを消弧てき、電気部品の焼損がなくなると共に、
この絶縁部材自体も焼損することがない。しかも、両電
気部品間に絶縁部材を介在させる程度の構成ですむので
、構成も簡単である。(Function) When soldering electrical parts, sparks are generated due to cracks in the parts, and even if this causes an arc to occur between the electrical parts that have a high potential difference, there is no inflammable insulation between the two electrical parts. Since there is a member involved, the arc distance can be extended and the arc extinguished, eliminating the risk of burnout of electrical parts.
This insulating member itself will not burn out. In addition, the configuration is simple, as it only requires an insulating member to be interposed between both electrical components.
（実施例）
以下、本発明の一実施例につき第１図ないし第４図を参
照しながら説明する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
第４図においては、外箱を取り除いた状態の電子レンジ
の要部を示している。内部を調理室とした内ケース１１
の側部には機械室１２が形成されており、この機械室１
２には、その前面に操作部１３が設けられ底部にはイン
バータユニット１４が配設されている。また、このイン
バータユニット１４の上方部にはマグネトロン１５が配
設されている。FIG. 4 shows the main parts of the microwave oven with the outer box removed. Inner case 11 with a cooking chamber inside
A machine room 12 is formed on the side of the machine room 1.
2 is provided with an operating section 13 on its front and an inverter unit 14 on its bottom. Further, a magnetron 15 is disposed above the inverter unit 14.
第１図にはインバータユニット１４を示している。この
インバータユニット１４は、プリント基板１６に昇圧ト
ランス１７を実装すると共に、マグネトロン１５駆動の
ための駆動回路を実装している。昇圧トランス１７は、
鉄心１８と、この鉄心１８にボビン１９を介して巻装し
た一次巻線２０および二次巻線２１とから構成されてい
る。上記巻線ボビン１９の上部には基板２２が取着され
ており、この基板２２に接続端子２２ａ、２２ｂが突設
されている。In FIG. 1, an inverter unit 14 is shown. This inverter unit 14 has a step-up transformer 17 mounted on a printed circuit board 16 and a drive circuit for driving the magnetron 15. The step-up transformer 17 is
It consists of an iron core 18, and a primary winding 20 and a secondary winding 21 wound around the iron core 18 via a bobbin 19. A board 22 is attached to the upper part of the winding bobbin 19, and connection terminals 22a and 22b are provided protruding from the board 22.
この各接続端子２２ａ、２２ｂには、前記駆動回路の構
成部品としての倍電圧用のコンデンサ２３のリード線２
３ａ、２３ｂが半田付けされている。この場合基板２２
の端子２２ａ、２２ｂとコンデンサ２３とは高電位差の
関係にあり、これら両電気部品間には、不燃性の絶縁部
材としての例えばアラミツド紙からなるシート２４が介
在されている。このシート２４は、第２図および第３図
に示すように、孔２４ａ、２４ａが形成されており、こ
の孔２４ ａ、２４ ａを前記各接続端子２２ａ、２２
ｂにあらかじめ挿通しておくことで該シート２４が基板
２２とコンデンサ２３との間に配置されている。Each connection terminal 22a, 22b is connected to a lead wire 2 of a voltage doubler capacitor 23 as a component of the drive circuit.
3a and 23b are soldered. In this case, the substrate 22
There is a high potential difference between the terminals 22a, 22b and the capacitor 23, and a sheet 24 made of, for example, aramid paper is interposed as a non-flammable insulating member between these two electrical components. As shown in FIGS. 2 and 3, this sheet 24 has holes 24a, 24a formed therein, and these holes 24a, 24a are connected to the connection terminals 22a, 22a.
The sheet 24 is placed between the substrate 22 and the capacitor 23 by inserting the sheet 24 through the capacitor 23 in advance.
上記構成において、たとえば接続端子２２ａ。In the above configuration, for example, the connection terminal 22a.
２２ｂとコンデンサ２３のリード線２３ａ、２３ｂとの
半田付は部分のクラック等によってスパークが発生し、
これがもとで高電位差の関係にあるこれら接続端子２２
ａ、２２ｂとコンデンサ２３のリード線２−３ａ、２３
ｂとの間にアークが発生したとしても、その画者間に不
燃性の絶縁部材であるシート２４が介在するので、アー
ク距離を長くできてこれを消弧でき、コンデンサ２３お
よびその他の電気部品の焼損がなくなると共に、このシ
ート２４自体も焼損することがない。しかも、電気部品
間にシート２４を介在させる程度の構成ですむので、構
成も簡単である。22b and the lead wires 23a and 23b of the capacitor 23, sparks may occur due to cracks in the parts, etc.
Due to this, these connection terminals 22 which have a high potential difference relationship
a, 22b and the lead wires 2-3a, 23 of the capacitor 23
Even if an arc occurs between the capacitor 23 and other electrical parts, the sheet 24, which is a nonflammable insulating member, is interposed between the two and In addition, the sheet 24 itself will not be burned out. In addition, the configuration is simple, as it only requires the sheet 24 to be interposed between the electrical components.
なお、上記実施例では、コンデンサ２３と昇圧トランス
１７の二次側の接続端子２２ａ、２２ｂとの間にシート
２４を介在させたが、シート２４を介在させるについて
は他の電気部品間であっても良い。In the above embodiment, the sheet 24 is interposed between the capacitor 23 and the secondary side connection terminals 22a, 22b of the step-up transformer 17, but the sheet 24 is interposed between other electrical components. Also good.
その他、本発明は上記実施例に限定されず、要旨を逸脱
しない範囲内で種々変更して実施できるものである。In addition, the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the scope of the invention.
［発明の効果コ
本発明は以上の説明から明らかなように、昇圧トランス
を備え、この昇圧トランスの二次側にマグネトロン駆動
のための高圧の駆動回路を備えたものにおいて、高電位
差となる電気部品間に不燃性の絶縁部材を介在させたこ
とを特徴とするものであり、これにて、アークが発生す
るようなことがあってもこれを消弧できて電気部品の焼
損を防止でき、しかも簡単な構成でこれを達成できると
いう優れた効果を奏する。[Effects of the Invention] As is clear from the above description, the present invention is provided with a step-up transformer and a high-voltage drive circuit for driving a magnetron on the secondary side of the step-up transformer. It is characterized by interposing a nonflammable insulating member between the parts, so that even if an arc occurs, it can be extinguished and the electrical parts can be prevented from burning out. Moreover, this can be achieved with a simple configuration, which is an excellent effect.
第１図ないし第４図は本発明の一実施例を示すもので、
第１図はインバータユニットの斜視図、第２図はシート
取り付は部分の分解斜視図、第３図は同部分の横断平面
図、第４図は電子レンジの要部の斜視図である。第５図
は従来例を示すインバータユニットの斜視図である。
図面中、１２は機械室、１４はインバータユニット、１
５はマグネトロン、１６は昇圧トランス、２２は基板（
電気部品） 、２２ａ、２２ｂは接続端子、２３はコン
デンサ（電気部品）、−ト（絶縁部材）を示す。1 to 4 show an embodiment of the present invention,
FIG. 1 is a perspective view of the inverter unit, FIG. 2 is an exploded perspective view of the seat attachment portion, FIG. 3 is a cross-sectional plan view of the same portion, and FIG. 4 is a perspective view of essential parts of the microwave oven. FIG. 5 is a perspective view of a conventional inverter unit. In the drawing, 12 is a machine room, 14 is an inverter unit, 1
5 is a magnetron, 16 is a step-up transformer, 22 is a board (
22a, 22b are connection terminals, 23 is a capacitor (electrical component), and 22a (electrical component) is an insulating member.
Claims (1)
マグネトロン駆動のための高圧の駆動回路を備えたもの
において、高電位差となる電気部品間に不燃性の絶縁部
材を介在させたことを特徴とする電子レンジ。1. A device comprising a step-up transformer and a high-voltage drive circuit for driving a magnetron on the secondary side of the step-up transformer, characterized in that a nonflammable insulating member is interposed between electrical components that have a high potential difference. microwave oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02194412A JP3085692B2 (en) | 1990-07-23 | 1990-07-23 | microwave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02194412A JP3085692B2 (en) | 1990-07-23 | 1990-07-23 | microwave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0479307A true JPH0479307A (en) | 1992-03-12 |
| JP3085692B2 JP3085692B2 (en) | 2000-09-11 |
Family
ID=16324173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02194412A Expired - Fee Related JP3085692B2 (en) | 1990-07-23 | 1990-07-23 | microwave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3085692B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007013221A (en) * | 2002-09-17 | 2007-01-18 | Matsushita Electric Ind Co Ltd | Transformer and transformer unit equipped with it |
| TWI732819B (en) * | 2016-01-29 | 2021-07-11 | 乾坤科技股份有限公司 | Electronic module with a magnetic device |
-
1990
- 1990-07-23 JP JP02194412A patent/JP3085692B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007013221A (en) * | 2002-09-17 | 2007-01-18 | Matsushita Electric Ind Co Ltd | Transformer and transformer unit equipped with it |
| TWI732819B (en) * | 2016-01-29 | 2021-07-11 | 乾坤科技股份有限公司 | Electronic module with a magnetic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3085692B2 (en) | 2000-09-11 |
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