JPS642535Y2 - - Google Patents
Info
- Publication number
- JPS642535Y2 JPS642535Y2 JP14120281U JP14120281U JPS642535Y2 JP S642535 Y2 JPS642535 Y2 JP S642535Y2 JP 14120281 U JP14120281 U JP 14120281U JP 14120281 U JP14120281 U JP 14120281U JP S642535 Y2 JPS642535 Y2 JP S642535Y2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- phase
- power supply
- windings
- armature 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
- 238000003466 welding Methods 0.000 claims description 56
- 238000004804 winding Methods 0.000 claims description 43
- 239000000463 material Substances 0.000 description 9
- 239000010953 base metal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Synchronous Machinery (AREA)
- Arc Welding Control (AREA)
Description
【考案の詳細な説明】
本考案はエンジンによつて駆動される発電機に
係り、特にアーク溶接用発電機と兼用できる交流
発電機に関する。[Detailed Description of the Invention] The present invention relates to a generator driven by an engine, and particularly to an alternating current generator that can be used also as an arc welding generator.
従来、野外の建設作業等においては、アーク溶
接用電源と各種工具用等電源との両者を兼用でき
る第１図に示す如き補助電源付きエンジン駆動型
溶接機が用いられている。しかし、この種のもの
では、溶接機用の巻線u1，v1，w1と交流発電機
用の巻線u2，v2，w2との起電力を電源とする形
式であるために、整流器Reと各巻線間とが電気
的に完全に遮断された絶縁状態にはなつていな
い。従つて、通常アース状態となる場合の多い溶
接母材Ａに溶接ケーブルを接続したまま工具用等
として交流電源を使用すると、その工具類の絶縁
不良その他の原因により第１図の破線に示す経路
の如く何れかの交流発電機の出力相（図示例では
Ｗ相）から人体及びアースを経て溶接母材Ａに至
り、次いで整流器Re及び交流発電機の巻線（図
示例ではu1w1，w2の各巻線）を介して前記出力
相に至る如く電流が流れて思わぬ感電事故を招く
危険性がある等の問題を有していた。 BACKGROUND ART Conventionally, in outdoor construction work, etc., an engine-driven welding machine with an auxiliary power source, as shown in FIG. 1, which can serve both as a power source for arc welding and a power source for various tools, etc., has been used. However, in this type of device, the power source is the electromotive force of the welding machine windings u 1 , v 1 , w 1 and the alternating current generator windings u 2 , v 2 , w 2 . In addition, the rectifier Re and each winding are not completely electrically isolated from each other. Therefore, if an AC power source is used for tools with the welding cable connected to the welding base material A, which is often in a grounded state, the path shown by the broken line in Figure 1 may occur due to poor insulation of the tools or other causes. The output phase of one of the alternators (W phase in the illustrated example) passes through the human body and the ground to the welding base material A, and then the rectifier Re and the alternator windings (in the illustrated example, u 1 w 1 , There was a problem in that there was a risk that current would flow to the output phase through each winding ( w2 ), leading to an unexpected electric shock accident.
そこで、本考案は上記事情に鑑みなされたもの
で、回転界磁形交流発電機において、三相星形結
線された第１の電機子巻線１，３，５と、該第１
の電機子巻線に対して60度の位相を異にして三相
結線された第２の電機子巻線２，４，６との夫々
の中性点を接続して６相星形結線とし、前記第１
の電機子巻線の夫々の相は切換スイツチ１０，１
１，１２の各閉成端子を介し、前記６相星形結線
内の前記第２の電機子巻線の夫々の相は開閉スイ
ツチ１３，１４，１５の各閉成端子を介して溶接
電源回路に夫々接続され、前記第１の電機子巻線
１，３，５の夫々の相に対して同相に前記切換ス
イツチ１０，１１，１２の開成端子を介して交流
電源専用巻線７，８，９を設け、前記切換スイツ
チ１０，１１，１２および前記開閉スイツチ１
３，１４，１５は連動式とされてなる溶接用発電
機兼用のエンジン駆動型交流発電機を提供するこ
とを目的とする。 Therefore, the present invention has been developed in view of the above circumstances.
The neutral points of the second armature windings 2, 4, and 6, which are connected in three phases with a 60 degree difference in phase with respect to the armature winding, are connected to form a six-phase star connection. , said first
Each phase of the armature winding is connected to a changeover switch 10,1.
The respective phases of the second armature winding in the six-phase star connection are connected to the welding power supply circuit via the respective closing terminals of the open/close switches 13, 14, and 15 through the respective closing terminals 1 and 12. are connected to the AC power supply dedicated windings 7, 8, and 12 through the open terminals of the changeover switches 10, 11, and 12 in the same phase as the respective phases of the first armature windings 1, 3, and 5, respectively. 9, the changeover switches 10, 11, 12 and the open/close switch 1
Nos. 3, 14, and 15 are intended to provide an engine-driven alternating current generator that is of an interlocking type and can also be used as a welding generator.
以下本考案に係る溶接用発電機兼用のエンジン
駆動型交流発電機の一実施例を図面に基づき説明
する。第２図において、Ｇはエンジンにより駆動
される回転界磁型の交流発電機である。この交流
発電機Ｇの電機子巻線２２は６相星形に結線され
た巻線１〜６と交流電源専用巻線７〜９とからな
つている。６相星形巻線１〜６のうち３相星形結
線に相当する巻線１，３，５は溶接・交流電源兼
用巻線とし、他の巻線２，４，６は溶接電源専用
巻線としたものである。前記溶接・交流電源兼用
巻線１，３，５には切換えスイツチ１０，１１，
１２により交流電源専用巻線７〜９と溶接用電源
回路２３とが適宜切換え可能に接続されるように
なつている。この各交流電源専用巻線７〜９は
夫々接続されるべき溶接・交流電源兼用巻線１，
３，５と同相になるよう巻装されている。そし
て、各交流電源専用巻線７〜９からは、各相Ｕ，
Ｖ，Ｗに対応して接続端子１９〜２１が引出され
ている。一方、溶接電源専用巻線２，４，６には
開閉スイツチ１３，１４，１５を介して前記溶接
用電源回路２３が接続されている。前記切換スイ
ツチ１０，１１，１２と開閉スイツチ１３，１
４，１５とは互いに連動して切換え及び開閉動作
をするようになつている。 DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an engine-driven alternating current generator that also serves as a welding generator according to the present invention will be described below with reference to the drawings. In FIG. 2, G is a rotating field type alternator driven by an engine. The armature winding 22 of this alternating current generator G consists of windings 1 to 6 connected in a six-phase star shape and windings 7 to 9 dedicated to the AC power supply. Of the 6-phase star-shaped windings 1 to 6, windings 1, 3, and 5, which correspond to the 3-phase star-shaped connection, are windings that can be used for both welding and AC power supplies, and the other windings 2, 4, and 6 are dedicated windings for welding power supplies. It is a line. Changeover switches 10, 11,
12, the AC power supply exclusive windings 7 to 9 and the welding power supply circuit 23 are connected to each other so as to be switchable as appropriate. These AC power supply dedicated windings 7 to 9 are connected to the welding/AC power supply combined winding 1,
It is wound so that it is in phase with 3 and 5. From each AC power supply dedicated winding 7 to 9, each phase U,
Connection terminals 19 to 21 are drawn out corresponding to V and W. On the other hand, the welding power supply circuit 23 is connected to the welding power supply dedicated windings 2, 4, and 6 via on/off switches 13, 14, and 15. The changeover switches 10, 11, 12 and the open/close switches 13, 1
4 and 15 are designed to perform switching and opening/closing operations in conjunction with each other.
溶接用電源回路２３は、前記交流発電機Ｇに接
続されてその起電力を６相全波整流する整流器１
６を有し、この整流器１６の陽極がリアクタ２４
を介して溶接棒１７に、整流器１６の陰極が溶接
母材１８に接続されるようになつている。溶接母
材１８は通常必然的にアース状態となる場合が多
い。又溶接条件によつては溶接棒１７が陰極に、
溶接母材１８が陽極に接続される場合もある。
尚、０は中性点である。 The welding power supply circuit 23 includes a rectifier 1 that is connected to the alternating current generator G and performs six-phase full-wave rectification of the electromotive force.
6, and the anode of this rectifier 16 is connected to the reactor 24.
The cathode of the rectifier 16 is connected to the welding rod 17 and the welding base material 18 via the welding rod 17 . The welding base material 18 is usually inevitably in a grounded state in many cases. Also, depending on the welding conditions, the welding rod 17 may act as a cathode,
In some cases, the welding base material 18 is connected to the anode.
Note that 0 is the neutral point.
しかして、溶接作業を行う場合には、前記切換
えスイツチ１０，１１，１２を接点１０ｂ，１１
ｂ，１２ｂ側に切換え、かつこの切換え操作に連
動して開閉スイツチ１３，１４，１５が閉成す
る。この結果、６相星形巻線１〜６の総ての起電
力が整流器１６にて６相全波整流された後、リア
クタ２４を介して溶接棒１７に、又溶接母材１８
に溶接電流が供与されて溶接可能となる。 Therefore, when performing welding work, the changeover switches 10, 11, 12 are connected to the contacts 10b, 11.
b, 12b side, and the open/close switches 13, 14, 15 are closed in conjunction with this switching operation. As a result, all the electromotive force of the six-phase star-shaped windings 1 to 6 is subjected to six-phase full-wave rectification by the rectifier 16, and then transferred to the welding rod 17 via the reactor 24 and to the welding base material 18.
A welding current is applied to the welding area to enable welding.
他方、工具類等の電源として三相交流電力を取
出す場合には、切換えスイツチ１０，１１，１２
を接点１０ａ，１１ａ，１２ａ側に切換え、この
切換え操作に連動して開閉スイツチ１３，１４，
１５が開離する。この結果、溶接・交流電源兼用
巻線１，３，５と交流電源専用巻線７，８，９と
の起電力が接続端子１９〜２１に供与される。こ
の場合、溶接電源専用巻線２，４，６は開閉スイ
ツチ１３，１４，１５の開離で溶接用電源回路２
３から遮断され、一方接点１０ｂ，１１ｂ，１２
ｂもその切換え操作で電機子巻線２２から遮断さ
れている。要するに、三相交流電力を取出してい
る状態では、その三相交流電源回路が、溶接母材
１８に対する接続ケーブルの接続若しくは取外し
の如何に拘わらず、溶接用電源回路から電気的に
完全に遮断される。 On the other hand, when extracting three-phase AC power as a power source for tools, etc., selector switches 10, 11, 12 are used.
is switched to the contact 10a, 11a, 12a side, and in conjunction with this switching operation, the open/close switches 13, 14,
15 opens. As a result, the electromotive force of the welding/AC power source windings 1, 3, 5 and the AC power source exclusive windings 7, 8, 9 is applied to the connection terminals 19-21. In this case, the welding power supply dedicated windings 2, 4, and 6 are connected to the welding power supply circuit 2 by opening/closing switches 13, 14, and 15.
3, and one contact 10b, 11b, 12
b is also disconnected from the armature winding 22 by the switching operation. In short, when three-phase AC power is being extracted, the three-phase AC power supply circuit is completely electrically disconnected from the welding power supply circuit, regardless of whether the connection cable is connected to or removed from the welding base material 18. Ru.
ところで、溶接作業時においては、６相の交流
電力によつて溶接棒１７と溶接母材１８との間に
供与される所定の溶接電流値が得られるように
し、又三相交流電源として使用する場合には、更
に交流電源専用巻線７〜９を溶接・交流電源兼用
巻線１，３，５に直列に付加して、所定の電圧値
を得るようにしている。 By the way, during welding work, a predetermined value of welding current is supplied between the welding rod 17 and the welding base metal 18 by six-phase AC power, and it is used as a three-phase AC power source. In this case, AC power supply dedicated windings 7 to 9 are further added in series to the welding/AC power supply dual purpose windings 1, 3, and 5 to obtain a predetermined voltage value.
以上の如く本考案に係る溶接用発電機兼用のエ
ンジン駆動型交流発電機によれば、工具類等の電
源として三相交流電力を取出している状態では、
切換えスイツチの切換えと開閉スイツチの開離に
よつて、溶接用電源回路が各電機子巻線から電気
的に完全に遮断された状態となつて、その三相交
流電源回路に対して電気的に何等関与しないの
で、溶接母材に接続ケーブルを接続した状態のま
ま工具類等の電源として三相交流電力を取出した
としても、その工具類等の絶縁不良その他の原因
で、前記三相交流電力によりアース状態にある溶
接母材を含む溶接用電源回路を介して感電事故を
招くといつた不具合の発生がなく、しかもこのよ
うな感電事故を防止し得る回路構成も比較的簡易
なもので済む等実用上多大な効果を有する。 As described above, according to the engine-driven alternating current generator that also serves as a welding generator according to the present invention, when three-phase alternating current power is extracted as a power source for tools, etc.,
By changing the changeover switch and opening the on/off switch, the welding power supply circuit is completely electrically cut off from each armature winding, and the welding power supply circuit is electrically disconnected from the three-phase AC power supply circuit. Since there is no involvement in the welding process, even if three-phase AC power is extracted as a power source for tools, etc. with the connection cable connected to the welding base metal, the three-phase AC power Therefore, there is no problem that could lead to an electric shock accident through the welding power supply circuit that includes the welding base material that is in a grounded state, and the circuit configuration that can prevent such an electric shock accident can be relatively simple. It has great practical effects.
第１図は従来の補助電源付きエンジン駆動型溶
接用発電機の回路図、第２図は本考案に係る溶接
用発電機兼用のエンジン駆動型交流発電機の一実
施例を示す回路図である。
Ｇ……交流発電機、１，３，５……溶接・交流
電源用巻線、２，４，６……溶接電源専用巻線、
７〜９……交流電源専用巻線、１０〜１２……切
換えスイツチ、１３〜１６……開閉スイツチ、１
６……整流器、１７……溶接棒、１８……溶接母
材、１９〜２１……接続端子、２２……電機子巻
線、２３……溶接用電源回路、２４……リアク
タ。
FIG. 1 is a circuit diagram of a conventional engine-driven welding generator with an auxiliary power source, and FIG. 2 is a circuit diagram showing an embodiment of an engine-driven alternating current generator that also serves as a welding generator according to the present invention. . G: AC generator, 1, 3, 5: Winding for welding/AC power supply, 2, 4, 6: Winding exclusively for welding power supply,
7-9...Winding exclusively for AC power supply, 10-12...Changing switch, 13-16...Opening/closing switch, 1
6... Rectifier, 17... Welding rod, 18... Welding base material, 19-21... Connection terminal, 22... Armature winding, 23... Welding power supply circuit, 24... Reactor.
Claims (1)
５と、該第１の電機子巻線に対して60度の位相を
異にして三相結線された第２の電機子巻線２，
４，６との夫々の中性点を接続して６相星形結線
とし、 前記第１の電機子巻線の夫々の相は切換スイツ
チ１０，１１，１２の各閉成端子を介し、前記６
相星形結線内の前記第２の電機子巻線の夫々の相
は開閉スイツチ１３，１４，１５の各閉成端子を
介して溶接電源回路に夫々接続され、 前記第１の電機子巻線１，３，５の夫々の相に
対して同相に前記切換スイツチ１０，１１，１２
の開成端子を介して交流電源専用巻線７，８，９
を設け、 前記切換スイツチ１０，１１，１２および前記
開閉スイツチ１３，１４，１５は連動式とされて
なることを特徴とする溶接用発電機兼用のエンジ
ン駆動型交流発電機。[Scope of claim for utility model registration] In a rotating field type alternating current generator, the first armature windings 1, 3, and 3 are connected in a three-phase star configuration.
5, and a second armature winding 2 connected in three phases with a phase difference of 60 degrees with respect to the first armature winding.
4 and 6 are connected to form a six-phase star-shaped connection, and each phase of the first armature winding is connected to the aforementioned one through each closing terminal of the changeover switch 10, 11, 12. 6
Each phase of the second armature winding in the phase star connection is connected to a welding power supply circuit through each closing terminal of an on-off switch 13, 14, 15, and the first armature winding The changeover switches 10, 11, 12 are connected in the same phase to the respective phases 1, 3, and 5.
AC power supply dedicated windings 7, 8, 9 through the open terminal of
An engine-driven alternator that can also be used as a welding generator, characterized in that the changeover switches 10, 11, 12 and the open/close switches 13, 14, 15 are interlocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14120281U JPS5846276U (en) | 1981-09-22 | 1981-09-22 | Engine-driven AC generator that can also be used as a welding generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14120281U JPS5846276U (en) | 1981-09-22 | 1981-09-22 | Engine-driven AC generator that can also be used as a welding generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5846276U JPS5846276U (en) | 1983-03-29 |
| JPS642535Y2 true JPS642535Y2 (en) | 1989-01-20 |
Family
ID=29934319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14120281U Granted JPS5846276U (en) | 1981-09-22 | 1981-09-22 | Engine-driven AC generator that can also be used as a welding generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846276U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5859364U (en) * | 1981-10-19 | 1983-04-21 | デンヨ−株式会社 | Engine-driven AC generator that can also be used as a welding generator |
| JPS6187243U (en) * | 1984-11-13 | 1986-06-07 |
-
1981
- 1981-09-22 JP JP14120281U patent/JPS5846276U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5846276U (en) | 1983-03-29 |
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