JPS6128399Y2 - - Google Patents
Info
- Publication number
- JPS6128399Y2 JPS6128399Y2 JP1989979U JP1989979U JPS6128399Y2 JP S6128399 Y2 JPS6128399 Y2 JP S6128399Y2 JP 1989979 U JP1989979 U JP 1989979U JP 1989979 U JP1989979 U JP 1989979U JP S6128399 Y2 JPS6128399 Y2 JP S6128399Y2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- high voltage
- heater
- primary
- primary winding
- 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.)
- Expired
Links
- 238000004804 winding Methods 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、例えば電子レンジにおいて、高圧側
より一次側に漏電する事故を防止することを目的
とするものである。[Detailed Description of the Invention] The purpose of the present invention is to prevent electric leakage from the high voltage side to the primary side in, for example, a microwave oven.
従来から高圧を使用する機器、例えば電子レン
ジにおいて、一次巻線と高圧巻線を接近して使用
する場合、一次巻線と高圧巻線の中間に高圧巻線
と同一金属に接続したアース板を使用していた。
しかしながらアース板の両側に絶縁処理を必要と
し、コスト高になるとともに構造的にも大きくな
る欠点を有していた。 Conventionally, when the primary winding and high voltage winding are used in close proximity to each other in devices that use high voltage, such as microwave ovens, a grounding plate connected to the same metal as the high voltage winding is placed between the primary winding and the high voltage winding. I was using it.
However, this method requires insulation treatment on both sides of the ground plate, resulting in high cost and a large structure.
そこで本考案は一次巻線と高圧巻線との間に別
個の巻線を介在させることにより上記従来の欠点
を解消するものであり、以下本考案の一実施例に
ついて添付図面とともに説明する。 Therefore, the present invention solves the above-mentioned conventional drawbacks by interposing a separate winding between the primary winding and the high-voltage winding.One embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図において、１は昇圧トランスのコア、２
は同トランスの一次巻線、３は同高圧巻線、４は
本案要部を構成する電子回路用巻線で、一次巻線
２と高圧巻線３との間に介在しその一端は電子回
路のアース線として外箱に接続されている。５は
ヒータ巻線、６，７，８，９はコアーと各巻線間
を電気的に絶縁する絶縁体である。次に第２図に
おいて、１０は柱上トランス、１１は高周波加熱
装置の外箱、１２はアース線、１３は人が外箱１
１に触れた時の人体抵抗、１４は高周波発振器で
あるマグネトロンで、高圧巻線３とヒータ巻線５
に接続されている。 In FIG. 1, 1 is a core of a step-up transformer, 2
is the primary winding of the transformer, 3 is the high voltage winding, 4 is a winding for the electronic circuit which constitutes the main part of the present invention, which is interposed between the primary winding 2 and the high voltage winding 3 and one end of which is connected to the outer casing as the earth wire of the electronic circuit. 5 is a heater winding, and 6, 7, 8, and 9 are insulators which electrically insulate the core from each winding. Next, in Fig. 2, 10 is a pole-mounted transformer, 11 is the outer casing of the high frequency heating device, 12 is an earth wire, and 13 is a person who is connected to the outer casing 1.
The human body resistance when touching 1, 14 is a magnetron which is a high-frequency oscillator, and the high-voltage winding 3 and the heater winding 5
It is connected to the.
１５は一次巻線２とヒータ巻線５間の絶縁抵
抗、１６は大地、１７はヒータ巻線５と巻線４間
に漏電が生じた場合の漏洩抵抗である。 15 is the insulation resistance between the primary winding 2 and the heater winding 5, 16 is the ground, and 17 is the leakage resistance when a leakage occurs between the heater winding 5 and the winding 4.
上記構成において、電子回路用巻線４がない場
合について考えると、マグネトロン１４のヒータ
巻線５と一次巻線２との間の絶縁体７，８が劣化
し絶縁抵抗１５でヒータ巻線５と一次巻線２が接
続された時、外箱１１と大地１６がアース線１２
で接続されておらず、人が外箱１１に触れるとそ
の人体抵抗１３でアースすることになる。 Considering the case where there is no electronic circuit winding 4 in the above configuration, the insulators 7 and 8 between the heater winding 5 and the primary winding 2 of the magnetron 14 deteriorate, and the insulation resistance 15 causes the heater winding 5 to When the primary winding 2 is connected, the outer box 11 and the ground 16 are connected to the ground wire 12.
If a person touches the outer box 11, the human body resistance 13 will ground the outer case 11.
すなわち高圧巻線３で発生した高圧電流はヒー
タ巻線５を通り漏洩抵孔１５→一次巻線２→柱上
トランス１０→大地１６→人体抵抗１３→外箱１
１を通り高圧巻線３に帰る電流が流れる。 In other words, the high voltage current generated in the high voltage winding 3 passes through the heater winding 5 and passes through the leakage resistor 15 → primary winding 2 → pole transformer 10 → earth 16 → human body resistance 13 → outer box 1
A current flows through the coil 1 and returns to the high voltage winding 3.
このように人体に高圧大電流が流れるのできわ
めて危険である。 This is extremely dangerous because high voltage and large current flow through the human body.
一方本考案によれば巻線４をヒータ巻線５と一
次巻線２の間に介在させているので、ヒータ巻線
５より一次巻線２に漏電する時は必らず巻線４に
漏電する。 On the other hand, according to the present invention, since the winding 4 is interposed between the heater winding 5 and the primary winding 2, when the current leaks from the heater winding 5 to the primary winding 2, the current leaks to the winding 4. do.
巻線４に漏電する漏洩抵抗を１７とすると高圧
巻線３で発生した高圧電流は、ヒータ巻線５→漏
洩抵抗１７→巻線４→電子回路→外箱１１を通り
高圧巻線３に帰る。 Assuming that the leakage resistance that leaks to the winding 4 is 17, the high voltage current generated in the high voltage winding 3 passes through the heater winding 5 → leakage resistance 17 → winding 4 → electronic circuit → outer box 11 and returns to the high voltage winding 3. .
したがつてアース線１２がなくて人が外箱１０
に触れても人体抵抗１３には高圧大電流が流れな
いので安全である。 Therefore, there is no ground wire 12 and a person is not connected to the outer box 10.
It is safe because high voltage and large current will not flow through the human body resistance 13 even if touched.
以上説明したように本考案によれば安価で小型
化が図れるなどその効果はきわめて大である。 As explained above, the present invention has extremely great effects, such as being able to be made smaller at a lower cost.
第１図は本考案の一実施例を示す高周波加熱波
加熱装置の昇圧トランスの断面図、第２図は同高
周波加熱装置の電気回路図である。
１……コア、２……一次巻線、３……高圧巻
線、４……巻線、５……ヒータ巻線、６，７，
８，９……絶縁体、１３……人体抵抗、１５……
絶縁抵抗、１６……大地。
FIG. 1 is a sectional view of a step-up transformer of a high frequency heating wave heating device showing an embodiment of the present invention, and FIG. 2 is an electric circuit diagram of the same high frequency heating device. 1... Core, 2... Primary winding, 3... High voltage winding, 4... Winding wire, 5... Heater winding, 6, 7,
8,9...Insulator, 13...Human body resistance, 15...
Insulation resistance, 16...Earth.
Claims (1)
巻線およびヒータ巻線を含む高圧巻線との間に別
個の巻線を介在させこの巻線を電子回路を介して
高圧巻線のアースに接続される側に接続したこと
を特徴とする高周波加熱波加熱装置。 A separate winding is interposed between the primary winding of the step-up transformer connected to the high-frequency oscillator and the high-voltage winding including the heater winding, and this winding is connected to the ground of the high-voltage winding via an electronic circuit. A high frequency heating wave heating device characterized by being connected to the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989979U JPS6128399Y2 (en) | 1979-02-19 | 1979-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989979U JPS6128399Y2 (en) | 1979-02-19 | 1979-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55120097U JPS55120097U (en) | 1980-08-25 |
| JPS6128399Y2 true JPS6128399Y2 (en) | 1986-08-22 |
Family
ID=28849869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989979U Expired JPS6128399Y2 (en) | 1979-02-19 | 1979-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6128399Y2 (en) |
-
1979
- 1979-02-19 JP JP1989979U patent/JPS6128399Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55120097U (en) | 1980-08-25 |
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