JPH10304651A - Equipment using high frequencies - Google Patents
Equipment using high frequenciesInfo
- Publication number
- JPH10304651A JPH10304651A JP9104449A JP10444997A JPH10304651A JP H10304651 A JPH10304651 A JP H10304651A JP 9104449 A JP9104449 A JP 9104449A JP 10444997 A JP10444997 A JP 10444997A JP H10304651 A JPH10304651 A JP H10304651A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- commercial
- wiring
- section
- magnetic flux
- 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.)
- Pending
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一般家庭などで利
用される誘導加熱調理器等の高周波利用機器に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency equipment such as an induction heating cooker used in ordinary households.
【０００２】[0002]
【従来の技術】以下、従来の高周波利用機器における雑
音端子電圧抑制手段について説明する。図４は従来の高
周波利用機器における雑音端子電圧抑制手段を示すもの
である。図４において、１は商用交流電源、２は雑音防
止用コンデンサ、３は直流電源回路、４はインバータ回
路、５はインバータ回路４を制御する制御回路、６は商
用交流電源１と雑音防止用コンデンサ２で形成される閉
区間、７は閉区間６と鎖交するインバータ回路４により
発生する磁束である。2. Description of the Related Art Hereinafter, a noise terminal voltage suppressing means in a conventional high frequency device will be described. FIG. 4 shows a noise terminal voltage suppressing means in a conventional high frequency device. In FIG. 4, 1 is a commercial AC power supply, 2 is a noise prevention capacitor, 3 is a DC power supply circuit, 4 is an inverter circuit, 5 is a control circuit for controlling the inverter circuit 4, 6 is a commercial AC power supply 1 and a noise prevention capacitor. A closed section 7 formed by 2 is a magnetic flux generated by the inverter circuit 4 linked to the closed section 6.
【０００３】以上のように構成された従来の高周波利用
機器における雑音端子電圧抑制手段について、以下その
動作について説明する。従来の高周波利用機器は、図４
に示すように、商用交流電源１を直流電源回路３により
直流電力に変換し、この直流電力をインバータ回路４に
より高周波電力に変換している。インバータ回路４は制
御回路５により制御される。商用交流電源１へ流出する
この高周波利用機器で発生した雑音は、商用交流電源の
電源ライン間に雑音防止用コンデンサ２を接続し、高周
波成分を除去している。[0003] The operation of the noise terminal voltage suppression means in the conventional high-frequency device configured as described above will be described below. Fig. 4
As shown in FIG. 1, a commercial AC power supply 1 is converted into DC power by a DC power supply circuit 3, and this DC power is converted into high-frequency power by an inverter circuit 4. The inverter circuit 4 is controlled by the control circuit 5. Noise generated by the high-frequency device flowing out to the commercial AC power supply 1 is connected to a noise prevention capacitor 2 between power supply lines of the commercial AC power supply to remove high-frequency components.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら上記の従
来の構成では、インバータ回路４で発生した磁束７が閉
区間６と交差するため、閉区間６には磁束７の変化によ
る誘導起電力が発生する。この問題解決のため、従来
は、閉区間６の面積を小さくすることや電磁シールドを
用いる等の対策が必要であった。しかしながら、従来の
対策では、回路実装上の制約の発生や、機器が大型化す
るなどの問題があった。However, in the above-mentioned conventional configuration, since the magnetic flux 7 generated by the inverter circuit 4 intersects the closed section 6, an induced electromotive force is generated in the closed section 6 due to the change of the magnetic flux 7. . In order to solve this problem, conventionally, measures such as reducing the area of the closed section 6 and using an electromagnetic shield have been required. However, the conventional countermeasures have problems such as occurrence of restrictions on circuit mounting and enlargement of equipment.
【０００５】本発明は上記課題を解決するもので、高周
波利用機器から商用交流電源へ流出する雑音端子電圧の
抑制手段を提供することを目的としている。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide means for suppressing a noise terminal voltage flowing from a high-frequency device to a commercial AC power supply.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明は、商用交流電源を直流電力に変換する直流電
源回路と、商用交流電源の電源ライン間に接続される雑
音防止用コンデンサと、直流電力を高周波電力に変換す
るインバータ回路と、前記インバータ回路を制御する制
御回路を備え、前記商用交流電源と前記雑音防止用コン
デンサ間の接続配線が相互に１回以上交差するように接
続した高周波利用機器の構成を有している。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a DC power supply circuit for converting a commercial AC power supply to DC power, and a noise prevention capacitor connected between power supply lines of the commercial AC power supply. An inverter circuit for converting DC power to high-frequency power, and a control circuit for controlling the inverter circuit, wherein connection wires between the commercial AC power supply and the noise prevention capacitor are connected so as to cross each other at least once. It has the configuration of high-frequency equipment.
【０００７】これにより、インバータ回路の高周波出力
の大きさに依存しない雑音端子電圧の抑制手段が得られ
る。As a result, a means for suppressing the noise terminal voltage independent of the magnitude of the high-frequency output of the inverter circuit can be obtained.
【０００８】[0008]
【発明の実施の形態】請求項１記載の発明は、商用交流
電源を直流電力に変換する直流電源回路と、商用交流電
源の電源ライン間に接続される雑音防止用コンデンサ
と、直流電力を高周波電力に変換するインバータ回路
と、前記インバータ回路を制御する制御回路を備え、前
記商用交流電源と前記雑音防止用コンデンサ間の接続配
線が相互に１回以上交差するように接続し、前記各配線
交差点により区分される前記接続配線の各区間におい
て、前記商用交流電源からみて奇数番目の各区間と鎖交
する磁束の変化量と、偶数番目の各区間と鎖交する磁束
の変化量がほぼ等しくなるように前記各配線交差点を設
定したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a DC power supply circuit for converting a commercial AC power supply to DC power, a noise prevention capacitor connected between power supply lines of the commercial AC power supply, An inverter circuit for converting power, and a control circuit for controlling the inverter circuit, wherein connection lines between the commercial AC power supply and the noise prevention capacitor are connected so as to cross each other at least once, and In each section of the connection wiring, the change amount of the magnetic flux linked to each of the odd-numbered sections and the change amount of the magnetic flux linked to each of the even-numbered sections are substantially equal when viewed from the commercial AC power supply. The respective wiring intersections are set as described above.
【０００９】このような構成をとることにより、前記奇
数番目の各区間の磁束変化により発生する誘導起電力
と、前記偶数番目の各区間の磁束変化により発生する誘
導起電力は、それぞれ逆方向に誘起されるため、互いに
打ち消しあうことになる。このことにより前記インバー
タ回路の高周波出力の大きさに関わらず、前記商用交流
電源から前記雑音防止用コンデンサの区間で形成される
閉区間における雑音端子電圧を抑制するという作用を有
する。With this configuration, the induced electromotive force generated by the change in magnetic flux in each of the odd-numbered sections and the induced electromotive force generated by the change in magnetic flux in each of the even-numbered sections are opposite to each other. Because they are induced, they cancel each other. This has the effect of suppressing the noise terminal voltage in a closed section formed by the section of the noise prevention capacitor from the commercial AC power supply, regardless of the magnitude of the high-frequency output of the inverter circuit.
【００１０】請求項２に記載の発明は、商用交流電源を
直流電力に変換する直流電源回路と、商用交流電源の電
源ライン間に接続される雑音防止用コンデンサと、直流
電力を高周波電力に変換するインバータ回路と、前記イ
ンバータ回路を制御する制御回路を備え、前記商用交流
電源と前記雑音防止用コンデンサ間の接続配線が相互に
交差するように接続し、前記商用交流電源と前記配線交
差点で形成される面積と、前記配線交差点と前記雑音防
止用コンデンサとの区間で形成される面積が、ほぼ等し
くなるように前記各配線交差点を設定したものである。According to a second aspect of the present invention, there is provided a DC power supply circuit for converting a commercial AC power supply to DC power, a noise prevention capacitor connected between power supply lines of the commercial AC power supply, and a DC power supply for converting high frequency power. And a control circuit for controlling the inverter circuit, wherein the connection lines between the commercial AC power supply and the noise prevention capacitor are connected so as to cross each other, and formed by the commercial AC power supply and the wiring intersection. Each of the wiring intersections is set so that an area to be formed and an area formed by a section between the wiring intersection and the noise prevention capacitor are substantially equal.
【００１１】このような構成をとることにより、前記各
区間と鎖交する磁束の変化量をほぼ等しくでき、各区間
に逆方向に誘起される起電力の大きさをほぼ等しく出
来、それぞれを互いにほぼ打ち消しあうことができる。
このことにより前記インバータ回路の高周波出力の大き
さに関わらず、前記商用交流電源から前記雑音防止用コ
ンデンサの区間で形成される閉区間における雑音端子電
圧を抑制するという作用を有する。By adopting such a configuration, the amount of change in the magnetic flux linked to each section can be made substantially equal, and the magnitude of the electromotive force induced in each section in the opposite direction can be made substantially equal. Can almost cancel each other out.
This has the effect of suppressing the noise terminal voltage in a closed section formed by the section of the noise prevention capacitor from the commercial AC power supply, regardless of the magnitude of the high-frequency output of the inverter circuit.
【００１２】[0012]
【実施例】次に、本発明の具体例を説明する。Next, specific examples of the present invention will be described.
【００１３】（実施例１）以下、本発明の第１の実施例
について図１を参照しながら説明する。図１において図
４と同じ番号付した箇所は、従来例で説明した構成部品
と同じであるため、詳細は省略する。図１において、コ
ードリール等で構成される電源入力部１２は商用交流電
源１と接続され、リード線１３、１４はそれぞれ、接続
点１５、１６を介して電源入力部１２と、プリント基板
１１上の接続点１７、１８を介して雑音防止用コンデン
サ２と接続されている。電源配線はプリント基板１１の
内部に形成された配線交差点３１により交差しており、
商用交流電源１から配線交差点３１までの区間を区間２
１とし、配線交差点３１から雑音防止用コンデンサ２ま
での区間を区間２２とする。(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same reference numerals as in FIG. 4 denote the same parts as those described in the conventional example, and a detailed description thereof will be omitted. In FIG. 1, a power supply input section 12 composed of a cord reel or the like is connected to the commercial AC power supply 1, and lead wires 13 and 14 are connected to the power supply input section 12 via connection points 15 and 16, respectively. Are connected to the noise prevention capacitor 2 through the connection points 17 and 18. The power wiring crosses at a wiring crossing point 31 formed inside the printed circuit board 11,
The section from the commercial AC power supply 1 to the wiring intersection 31 is section 2
1 and a section from the wiring intersection 31 to the noise prevention capacitor 2 is referred to as a section 22.
【００１４】区間２１と鎖交する磁束の変化量と、区間
２２と鎖交する磁束の変化量がほぼ等しくなるように配
線交差点３１を構成する。この構成によりインバータ回
路４の発振等により、区間２１、２２において磁束変化
による誘導起電力が生じても、その成分は互いにほぼ打
ち消しあうことができるので、電源入力部１２における
雑音端子電圧の発生を抑制することができる。なお、本
実施例では電源配線を１回交差させた場合を例にしてい
るが、２回以上交差させた場合でも同等の効果を得るこ
とが出来る。The wiring intersection 31 is configured such that the amount of change in the magnetic flux linking the section 21 and the amount of the magnetic flux linking the section 22 are substantially equal. With this configuration, even if an induced electromotive force due to a change in magnetic flux occurs in the sections 21 and 22 due to the oscillation of the inverter circuit 4 and the like, the components can substantially cancel each other. Can be suppressed. In this embodiment, the case where the power supply wiring is crossed once is taken as an example. However, the same effect can be obtained when the power supply wiring is crossed twice or more.
【００１５】（実施例２）以下、本発明の第２の実施例
について図２を参照しながら説明する。図２において図
１と同じ番号付した箇所は、実施例１で説明した構成部
品と同じであるため、詳細は省略する。電源配線はリー
ド線１３、１４の交差点である配線交差点３２により交
差した後、プリント基板１１上の接続点１７、１８に接
続される。商用交流電源１から配線交差点３２までの区
間を区間２３とし、配線交差点３２から雑音防止用コン
デンサ２までの区間を区間２４とし、区間２３と鎖交す
る磁束の変化量と、区間２４と鎖交する磁束の変化量が
ほぼ等しくなるように配線交差点３２を構成する。この
構成の様にプリント基板１１の外に配線交差点３２を形
成した場合でも、前記第１の実施例と同様の効果を得る
ことが出来る。(Embodiment 2) Hereinafter, a second embodiment of the present invention will be described with reference to FIG. 2, the same reference numerals as in FIG. 1 denote the same parts as those described in the first embodiment, and a detailed description thereof will be omitted. The power supply wiring crosses at a wiring intersection 32 which is an intersection of the lead wires 13 and 14, and is then connected to connection points 17 and 18 on the printed circuit board 11. A section from the commercial AC power supply 1 to the wiring intersection 32 is defined as a section 23, a section from the wiring intersection 32 to the noise prevention capacitor 2 is defined as a section 24, and the amount of change in magnetic flux linked to the section 23 and the link to the section 24. The wiring intersection 32 is configured so that the amount of change in the generated magnetic flux is substantially equal. Even when the wiring intersection 32 is formed outside the printed circuit board 11 as in this configuration, the same effect as that of the first embodiment can be obtained.
【００１６】（実施例３）以下本発明の第３の実施例に
ついて図３を参照しながら説明する。図３において、図
１図２と同じ番号付した箇所は、実施例１実施例２で説
明した構成部品と同じであるため、詳細は省略する。図
３における区間２４は配線交差点３１と配線交差点３２
間の電源配線区間である。電源配線は配線交差点３１、
３２により交差しており、区間２２と区間２３の面積の
和と区間２４の面積がほぼ等しくなるように配線交差点
３１、３２を構成する。(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. In FIG. 3, the same reference numerals as those in FIGS. 1 and 2 denote the same parts as those described in the first embodiment and the second embodiment, and a detailed description thereof will be omitted. 3 is a wiring intersection 31 and a wiring intersection 32.
This is the power supply wiring section between them. The power supply wiring is wiring intersection 31,
The intersections 32 and 32 form wiring intersections 31 and 32 such that the sum of the areas of the sections 22 and 23 and the area of the section 24 are substantially equal.
【００１７】この構成によりインバータ回路４の発振等
により、区間２２、２３、２４において磁束変化による
誘導起電力が生じても、区間２２、２３で発生した誘導
起電力と区間２４で発生した誘導起電力は互いにほぼ打
ち消しあうので、電源入力部１２における雑音端子電圧
を抑制することができる。なお、本実施例では電源配線
を２回交差させた場合を例にしているが、１回交差させ
た場合、あるいは３回以上交差させた場合でも、同等の
効果を得ることが出来る。With this configuration, even if an induced electromotive force due to a magnetic flux change occurs in the sections 22, 23, and 24 due to the oscillation of the inverter circuit 4, etc., the induced electromotive force generated in the sections 22, 23 and the induced electromotive force generated in the section 24 occur. Since the powers almost cancel each other, the noise terminal voltage in the power input unit 12 can be suppressed. In this embodiment, the case where the power supply wiring is crossed twice is taken as an example. However, the same effect can be obtained when the power supply wiring is crossed once or three or more times.
【００１８】[0018]
【発明の効果】以上のように本発明は、商用交流電源と
雑音防止用コンデンサ間の接続配線が、相互に１回以上
交差するように接続し、前記各配線交差点により区分さ
れる前記接続配線の各区間において、前記商用交流電源
からみて奇数番目の各区間と鎖交する磁束の変化量と、
偶数番目の各区間と鎖交する磁束の変化量が、ほぼ等し
くなるように前記各配線交差点を設けることにより、商
用交流電源と雑音防止用コンデンサ間の閉区間と鎖交す
る磁束の変化により生ずる誘導起電力を低減することが
でき、インバータの高周波出力の大きさに依存しない雑
音端子電圧の抑制手段を実現できるものである。As described above, according to the present invention, the connection wiring between the commercial AC power supply and the noise prevention capacitor is connected so as to cross each other at least once, and the connection wiring is divided by each of the wiring intersections. In each section, the amount of change in magnetic flux linked to each of the odd-numbered sections viewed from the commercial AC power supply,
By providing the wiring intersections so that the variation amounts of the magnetic flux interlinking with the even-numbered sections are substantially equal to each other, it is caused by the change of the magnetic flux interlinking the closed section between the commercial AC power supply and the noise prevention capacitor. The induced electromotive force can be reduced, and a noise terminal voltage suppressing means independent of the magnitude of the high frequency output of the inverter can be realized.
【図１】本発明の第１の実施例における高周波利用機器
の回路図FIG. 1 is a circuit diagram of a high-frequency device according to a first embodiment of the present invention.
【図２】本発明の第２の実施例における高周波利用機器
の回路図FIG. 2 is a circuit diagram of a high-frequency device according to a second embodiment of the present invention.
【図３】本発明の第３の実施例における高周波利用機器
の回路図FIG. 3 is a circuit diagram of a high-frequency device according to a third embodiment of the present invention.
【図４】従来の高周波利用機器を示す回路図FIG. 4 is a circuit diagram showing a conventional high-frequency device.
１ 商用交流電源 ２ 雑音防止用コンデンサ ３ 直流電源回路 ４ インバータ回路 ５ 制御回路 ６ 商用交流電源１と雑音防止用コンデンサ２で形成さ
れる閉区間 ７ 閉区間６と鎖交する磁束 １１ プリント基板 １２ 電源入力部 １３ リード線 １４ リード線 １５ 電源入力部１２とリード線１３との接続点 １６ 電源入力部１２とリード線１４との接続点 １７ リード線１３とプリント基板１１パターンとの接
続点 １８ リード線１４とプリント基板１１パターンとの接
続点 ２１ 商用交流電源１から配線交差点３１間の区間 ２２ 配線交差点３１と雑音防止用コンデンサ２間の区
間 ２３ 商用交流電源１から配線交差点３２間の区間 ２４ 配線交差点３２と雑音防止用コンデンサ２間の区
間 ２４ 配線交差点３１と配線交差点３２間の区間 ３１ プリント基板上のパターンが交差する配線交差点 ３２ リード線１３１４が交差する配線交差点DESCRIPTION OF SYMBOLS 1 Commercial AC power supply 2 Noise prevention capacitor 3 DC power supply circuit 4 Inverter circuit 5 Control circuit 6 Closed section formed of commercial AC power supply 1 and noise prevention capacitor 7 Magnetic flux linking with closed section 6 11 Printed circuit board 12 Power supply Input unit 13 Lead wire 14 Lead wire 15 Connection point between power input unit 12 and lead wire 16 Connection point between power input unit 12 and lead wire 17 Connection point between lead wire 13 and printed circuit board 11 pattern 18 Lead wire Connection point between 14 and printed circuit board 11 pattern 21 Section between commercial AC power supply 1 and wiring intersection 31 22 Section between wiring intersection 31 and noise prevention capacitor 2 23 Section between commercial AC power supply 1 and wiring intersection 32 24 Wiring intersection Section 32 between the noise prevention capacitor 2 Section 24 between the wiring intersection 31 and the wiring intersection 32 31 Wiring intersection line intersection 32 leads 1314 pattern on bets substrate intersect intersect
Claims (2)
電源回路と、商用交流電源の電源ライン間に接続される
雑音防止用コンデンサと、前記直流電力を高周波電力に
変換するインバータ回路と、前記インバータ回路を制御
する制御回路とを備え、前記商用交流電源と前記雑音防
止用コンデンサ間の接続配線は、前記商用交流電源から
前記直流電源回路に向かって奇数番目の各区間と鎖交す
る磁束の変化量と、偶数番目の各区間と鎖交する磁束の
変化量とを略同等とすべく相互に１回以上交差してなる
高周波利用機器。A DC power supply circuit for converting a commercial AC power supply to DC power; a noise prevention capacitor connected between power supply lines of the commercial AC power supply; an inverter circuit for converting the DC power to high-frequency power; And a control circuit for controlling an inverter circuit, wherein a connection line between the commercial AC power supply and the noise prevention capacitor is connected to an odd-numbered section from the commercial AC power supply toward the DC power supply circuit. A high-frequency device in which the amount of change and the amount of change in magnetic flux linked to each even-numbered section intersect each other at least once so as to be substantially equal.
間の面積を略同等としてなる請求項１記載の高周波利用
機器。2. The high-frequency device according to claim 1, wherein the area between the wirings in the odd-numbered section and the even-numbered section is substantially equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9104449A JPH10304651A (en) | 1997-04-22 | 1997-04-22 | Equipment using high frequencies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9104449A JPH10304651A (en) | 1997-04-22 | 1997-04-22 | Equipment using high frequencies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10304651A true JPH10304651A (en) | 1998-11-13 |
Family
ID=14380950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9104449A Pending JPH10304651A (en) | 1997-04-22 | 1997-04-22 | Equipment using high frequencies |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10304651A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010148231A (en) * | 2008-12-18 | 2010-07-01 | Toyota Motor Corp | Voltage converter and electric load driving unit |
| JP2010148292A (en) * | 2008-12-19 | 2010-07-01 | Toyota Motor Corp | Voltage converter and electric load driving unit |
| JP2020088888A (en) * | 2018-11-15 | 2020-06-04 | 株式会社日立製作所 | Voltage filter and power conversion device |
-
1997
- 1997-04-22 JP JP9104449A patent/JPH10304651A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010148231A (en) * | 2008-12-18 | 2010-07-01 | Toyota Motor Corp | Voltage converter and electric load driving unit |
| JP4621767B2 (en) * | 2008-12-18 | 2011-01-26 | トヨタ自動車株式会社 | Voltage converter and electric load driving device |
| JP2010148292A (en) * | 2008-12-19 | 2010-07-01 | Toyota Motor Corp | Voltage converter and electric load driving unit |
| JP4621768B2 (en) * | 2008-12-19 | 2011-01-26 | トヨタ自動車株式会社 | Voltage converter and electric load driving device |
| JP2020088888A (en) * | 2018-11-15 | 2020-06-04 | 株式会社日立製作所 | Voltage filter and power conversion device |
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