JP2603349Y2 - Coil device for high frequency induction heating - Google Patents
Coil device for high frequency induction heatingInfo
- Publication number
- JP2603349Y2 JP2603349Y2 JP1992081457U JP8145792U JP2603349Y2 JP 2603349 Y2 JP2603349 Y2 JP 2603349Y2 JP 1992081457 U JP1992081457 U JP 1992081457U JP 8145792 U JP8145792 U JP 8145792U JP 2603349 Y2 JP2603349 Y2 JP 2603349Y2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- gas
- induction heating
- coil device
- frequency induction
- 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 - Fee Related
Links
Landscapes
- General Induction Heating (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、高周波誘導電流によっ
て、ワークを加熱する高周波誘導加熱用のコイル装置に
関し、特にワークに不活性ガスを噴出しながら加熱する
ことができる高周波誘導加熱用のコイル装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency induction heating coil device for heating a workpiece by a high-frequency induction current, and more particularly to a high-frequency induction heating coil capable of heating a workpiece while ejecting an inert gas. Related to the device.
【０００２】[0002]
【従来の技術】従来、高周波誘導電流を利用してワーク
を焼入れする場合、例えば、実公昭６２−８１５８号公
報に開示のコイル装置が使用されている。このコイル装
置は、その外径が焼入れすべきワークの内径よりも若干
小さくなるように銅製のパイプを屈曲させて形成し、パ
イプ内に冷却水を循環供給させながら、ワークを加熱焼
入れするものである。2. Description of the Related Art Conventionally, when a workpiece is quenched by using a high-frequency induction current, for example, a coil device disclosed in Japanese Utility Model Publication No. 62-8158 is used. This coil device is formed by bending a copper pipe so that its outer diameter is slightly smaller than the inner diameter of the work to be quenched, and heat-hardens the work while circulating and supplying cooling water in the pipe. is there.
【０００３】[0003]
【考案が解決しようとする課題】しかしながら、上記の
コイル装置にあっては、焼入れされたワークの表面に酸
化スケールが発生する等、焼入れ表面品質が劣るという
問題点があった。そこで、この酸化スケール等を発生さ
せないために、ワークとコイル装置とを、例えば真空室
内に配置して焼入れする装置も考えられているが、この
装置にあっては、装置自体が大型かつ複雑化すると共
に、移動が困難である等、汎用性に欠けるという問題点
があった。However, in the above-described coil device, there is a problem that the quenched surface quality is inferior, for example, oxidized scale is generated on the surface of the quenched work. Therefore, in order to prevent the generation of the oxide scale and the like, a device for quenching the work and the coil device by, for example, placing the work and a coil device in a vacuum chamber has been considered. However, in this device, the device itself becomes large and complicated. In addition, there is a problem that versatility is lacking, such as difficulty in moving.
【０００４】本考案は、上記の事情に鑑みてなされたも
ので、極めて簡単な構成により、高精度な表面品質等が
得られる共に、汎用性の高い、高周波誘導加熱用のコイ
ル装置を提供することを目的とするものである。The present invention has been made in view of the above circumstances, and provides a highly versatile coil device for high-frequency induction heating that can achieve high-accuracy surface quality and the like with an extremely simple structure. The purpose is to do so.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成すべ
く、本考案の高周波誘導加熱用のコイル装置は、導電性
のパイプを所定形状に屈曲させ、その両端が高周波発生
装置に接続された筒状のコイル部と、該コイル部の長手
方向両端部に一体的に配設され複数の噴射孔をそれぞれ
有する一対のガス噴射部とを備え、前記ガス噴射部の噴
射孔をコイル部方向にそれぞれ指向させると共に、一対
のガス噴射部からコイル部内に不活性ガスを交互に噴出
させて、コイル部内に配置されたワークを高周波誘導加
熱することを特徴とする。In order to achieve the above object, a coil device for high-frequency induction heating according to the present invention has a tube in which a conductive pipe is bent into a predetermined shape and both ends of which are connected to a high-frequency generator. -Shaped coil portion, and a pair of gas injection portions each having a plurality of injection holes integrally disposed at both ends in the longitudinal direction of the coil portion, and the injection holes of the gas injection portion are respectively arranged in the coil portion direction. In addition to directing the workpiece, the inert gas is alternately ejected from the pair of gas ejecting sections into the coil section to perform high-frequency induction heating on the work arranged in the coil section.
【０００６】[0006]
【作用】本考案の高周波誘導加熱用のコイル装置におい
て、高周波発生装置からコイル部に高周波電流を供給す
ると共に、筒状のコイル部の長手方向両端部に一体的に
設けたガス噴出部の複数の噴射孔から、ワークとコイル
部の間隙に向かって不活性ガスが噴出される。この不活
性ガスは、ガス噴射部のコイル部方向に指向した噴射孔
からコイル部内に噴射されると共に、両端部のガス噴射
部から交互に噴射されるため、加熱されるワークの表面
に付着した異物を除去しつつ、この除去した異物やワー
ク周囲の空気中の塵挨等をコイル装置外に排除する。こ
の状態でワークが加熱されるため、例えば酸化スケール
等の発生が防止され、高精度な表面品質が得られる。In the coil device for high-frequency induction heating of the present invention, a high-frequency current is supplied from the high-frequency generator to the coil portion, and a plurality of gas ejection portions integrally provided at both longitudinal ends of the cylindrical coil portion. The inert gas is ejected from the injection hole toward the gap between the work and the coil portion. This inert gas is injected into the coil portion from the injection hole directed in the direction of the coil portion of the gas injection portion, and is alternately injected from the gas injection portions at both ends, so that the inert gas adheres to the surface of the workpiece to be heated. While removing the foreign matter, the removed foreign matter and dust and the like in the air around the work are removed outside the coil device. Since the workpiece is heated in this state, for example, generation of an oxide scale or the like is prevented, and highly accurate surface quality can be obtained.
【０００７】[0007]
【実施例】以下、本考案の一実施例を図面に基づいて詳
細に説明する。図１〜図３は、本考案に係わる高周波誘
導加熱用のコイル装置を示している。図１において、コ
イル装置１は、円筒状のコイル部２と、該コイル部２の
長手方向（軸方向）両端に配設されたガス噴出部３、４
とを有している。コイル部２は、銅製のパイプ（図３参
照）を所定回数巻回したコイル５を有し、このコイル５
をケース６内に取容することにより形成されている。コ
イル５の両端はケース６外に延長され、この延長部５
ａ、５ｂが、絶縁板７によって絶縁された一対の銅板
８、９の側面に、それぞれロウ付けによって固定されて
いる。また、延長部５ａ、５ｂの端部には、ホースコネ
クタ１０、１１が固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 show a coil device for high-frequency induction heating according to the present invention. In FIG. 1, a coil device 1 includes a cylindrical coil portion 2 and gas ejection portions 3 and 4 provided at both ends in a longitudinal direction (axial direction) of the coil portion 2.
And The coil unit 2 has a coil 5 in which a copper pipe (see FIG. 3) is wound a predetermined number of times.
In the case 6. Both ends of the coil 5 are extended out of the case 6, and the extension 5
a, 5b are fixed to the side surfaces of the pair of copper plates 8, 9 insulated by the insulating plate 7, respectively, by brazing. Hose connectors 10 and 11 are fixed to the ends of the extensions 5a and 5b.
【０００８】なお、コイル５の外周には絶縁材１２（図
３参照）が嵌装もしくは巻回され、この絶縁材１２によ
りコイル５同士及びコイル５とケース６との短絡が防止
されている。また、絶縁板７及び銅板８、９には、コイ
ル装置１を後述する高周波発生装置に取り付けるため
の、取付孔１３、１４が穿設されている。[0008] An insulating material 12 (see FIG. 3) is fitted or wound around the outer periphery of the coil 5, and the insulating material 12 prevents short-circuit between the coils 5 and between the coil 5 and the case 6. In addition, mounting holes 13 and 14 are provided in the insulating plate 7 and the copper plates 8 and 9 for mounting the coil device 1 to a high-frequency generator described later.
【０００９】上記ガス噴出部３、４は、中央部分に孔３
ａ、４ａを有してリング状に形成され、図３に示すよう
に、内部にガスの流路となる孔３ｂ、４ｂを有する。ま
た、ガス噴出部３、４の内側面には、複数の噴出孔３
ｃ、４ｃがそれぞれ穿設されている。この噴出孔３ｃ、
４ｃは、例えばコイル部２側に指向する如く、即ち、噴
出孔３ｃは下方に向き、噴出孔４ｃは上方に向いて穿設
されている。ガス噴出部３、４の外側面には、パイプ１
５、１６を介してコネクタ１７、１８が固定されてい
る。なお、ガス噴出部３、４は、コイル部２のケース６
の上端及び下端にロウ付けによって一体的に固定され、
これにより、ガス噴出部３、４とコイル部２を上下に貫
通する貫通孔１ａが形成される。The gas ejection portions 3 and 4 have holes 3 at their central portions.
a, 4a, and is formed in a ring shape, and has holes 3b, 4b serving as a gas flow path therein as shown in FIG. In addition, a plurality of ejection holes 3
c and 4c are respectively formed. This spout 3c,
4c is formed, for example, so as to be directed toward the coil unit 2, that is, the ejection hole 3c is directed downward, and the ejection hole 4c is directed upward. A pipe 1 is provided on the outer surfaces of the gas ejection portions 3 and 4.
Connectors 17 and 18 are fixed via 5 and 16. The gas ejection parts 3 and 4 are provided in the case 6 of the coil part 2.
Is fixed integrally by brazing to the upper and lower ends of the
As a result, a through-hole 1a vertically penetrating the gas ejection portions 3, 4 and the coil portion 2 is formed.
【００１０】次に、このコイル装置１の使用方法につい
て説明する。まず、上記取付孔１３、１４を利用して、
コイル装置１を、トランジスタインバータからなる高周
波発生装置１９の変成器（図示せず）に取り付けると共
に、高周波発生装置１９に付属した冷却器（図示せず）
と上記ホースコネクタ１０、１１とをホース等によって
接続する。これにより、コイル装置１と高周波発生装置
１９とが、電気的に接続されると共に、コイル５内への
冷却水の供給流路が形成されたことになる。また、上記
コネクタ１７、１８と、ガス供給装置２０とをホース等
によって接続する。Next, a method of using the coil device 1 will be described. First, using the mounting holes 13 and 14,
The coil device 1 is attached to a transformer (not shown) of the high frequency generator 19 composed of a transistor inverter, and a cooler (not shown) attached to the high frequency generator 19.
And the hose connectors 10 and 11 are connected by a hose or the like. As a result, the coil device 1 and the high-frequency generator 19 are electrically connected, and the supply channel of the cooling water into the coil 5 is formed. The connectors 17 and 18 and the gas supply device 20 are connected by a hose or the like.
【００１１】そして、コイル装置１の貫通孔１ａ内にワ
ーク２１を配置し、高周波発生装置１９とガス供給装置
２０とを作動させる。高周波発生装置１９が作動する
と、所定の高周波電流がコイル５に供給され、誘導電流
によってワーク２１が加熱される。この加熱時に、コイ
ル５内に冷却水が循環供給されて、該コイル５の発熱が
抑えられる。また、高周波電流の供給と同時に、ガス供
給装置２０からガス噴出部３、４に、例えばアルゴンガ
ス、窒素ガス等の不活性ガスが供給され、このガスが噴
出孔３ｃ、４ｃから上記貫通孔１ａ内に噴出される。Then, the work 21 is arranged in the through hole 1a of the coil device 1, and the high frequency generator 19 and the gas supply device 20 are operated. When the high-frequency generator 19 operates, a predetermined high-frequency current is supplied to the coil 5, and the work 21 is heated by the induced current. At the time of this heating, cooling water is circulated and supplied into the coil 5 to suppress heat generation of the coil 5. At the same time as the supply of the high-frequency current, an inert gas such as argon gas or nitrogen gas is supplied from the gas supply device 20 to the gas ejection portions 3 and 4, and the gas is supplied from the ejection holes 3 c and 4 c to the through-hole 1 a. Squirted into.
【００１２】噴出されたこのガスは、ワーク２１とコイ
ル５との間隙２２内に噴出されて、ワーク２１の表面に
付着した異物等を除去すると共に、この除去した異物と
間隙２２内に存在する塵挨等を貫通孔１ａ外に排除す
る。この時、ガス噴出部３、４から噴出されるガスが、
交互に噴出されることにより、間隙２２内の塵挨等を効
果的に貫通孔１ａ外に排除できる。このガスの供給によ
って、間隙２２内は略真空状態となって、この状態で高
周波加熱、即ち焼入れされる。The jetted gas is jetted into the gap 22 between the work 21 and the coil 5 to remove foreign substances and the like attached to the surface of the work 21 and to be present in the gap 22 with the removed foreign substances. Dust and the like are excluded outside the through hole 1a. At this time, the gas ejected from the gas ejection units 3 and 4
By being alternately ejected, dust and the like in the gap 22 can be effectively eliminated outside the through hole 1a. By the supply of this gas, the inside of the gap 22 is brought into a substantially vacuum state, and high-frequency heating, ie, quenching is performed in this state.
【００１３】そして、所定時間焼入れ後、例えばガス噴
出部３、４を作動させた状態で、図示しない噴出ノズル
等から所定の冷却剤を加熱したワーク２１に噴射し、ワ
ーク２１を冷却させることにより、一連の焼入れ作業が
終了する。After quenching for a predetermined time, a predetermined coolant is injected from a jet nozzle or the like (not shown) onto the heated work 21 in a state where the gas jetting sections 3 and 4 are operated, thereby cooling the work 21. , A series of quenching operations is completed.
【００１４】このように、上記実施例によれば、コイル
部２両端のガス噴出部３、４から、不活性ガスを交互に
噴出しながら高周波焼入れするため、焼入れすべきワー
ク２１の表面及びその周囲の雰囲気を清浄に保つことが
でき、塵挨等に起因する酸化スケール等の発生を防止す
ることができる。これにより、高精度な焼入れ面を得る
ことが可能になる。また、ガス噴出部３、４は、コイル
部２の上下端面に一体的に配設されているため、ワーク
２１へのセット及びコイル装置１の交換・移動等を容易
に行うことができ、汎用性の高いコイル装置１が得られ
る。As described above, according to the above embodiment, since the induction hardening is performed while the inert gas is alternately ejected from the gas ejection portions 3 and 4 at both ends of the coil portion 2, the surface of the work 21 to be hardened and its surface are hardened. The surrounding atmosphere can be kept clean, and the generation of oxide scale and the like due to dust and the like can be prevented. This makes it possible to obtain a high-precision hardened surface. In addition, since the gas ejection portions 3 and 4 are integrally provided on the upper and lower end surfaces of the coil portion 2, the gas ejection portions 3 and 4 can be easily set on the work 21 and exchange / movement of the coil device 1 can be easily performed. The coil device 1 having high performance is obtained.
【００１５】なお、上記実施例では、ワーク２１を高周
波焼入れする場合について説明したが、上記コイル装置
１は、例えば２個のワークを高周波電流によってロウ付
けする場合にも適用できる。この場合、ロウの流れ度
合、接着強度等、良好なロウ付け品質が得られることが
確認されている。In the above embodiment, the case where the work 21 is induction hardened has been described. However, the coil device 1 can also be applied to the case where two works are brazed by high frequency current, for example. In this case, it has been confirmed that good brazing quality such as the degree of flow of the brazing and the adhesive strength can be obtained.
【００１６】また、上記実施例においては、コイルが円
筒形状である場合について説明したが、本考案はこれに
何等限定されず、例えば、半円状、楕円状、方形状の筒
状のコイルにも適用できるものである。また、上記実施
例においては、巻回したコイルをカバー内に取容し、こ
のカバーにガス噴出部をロウ付け固定により一体的に配
設したが、例えばコイルとガス噴出部をガラス、セラミ
ックス等からなる耐熱部材でコーティングして一体的に
形成してもよい。In the above embodiment, the case where the coil has a cylindrical shape has been described. However, the present invention is not limited to this case. For example, the coil may be formed into a semicircular, elliptical, or square cylindrical coil. Is also applicable. In the above embodiment, the wound coil is accommodated in the cover, and the gas ejection portion is integrally mounted on the cover by brazing. However, for example, the coil and the gas ejection portion may be made of glass, ceramic, or the like. May be integrally formed by coating with a heat-resistant member made of
【００１７】[0017]
【考案の効果】以上詳述したように、本考案の高周波誘
導加熱用のコイル装置によれば、筒状コイル部の長手方
向両端部にガス噴出部をそれぞれ一体的に配設すると共
に、ガス噴射部の噴射孔をコイル部方向に指向させ、か
つガス噴射部からの不活性ガスの噴射を交互に行うた
め、コイル部内にセットされるワークの表面への酸化ス
ケールの発生を効果的に防止することができて、簡単な
構成で高精度な加熱表面品質のワークを容易に得ること
ができる。また、コイル装置のセット、交換及び移動等
が容易となって、汎用性の高いコイル装置が得られる等
の効果を奏する。As described above in detail, according to the coil device for high-frequency induction heating of the present invention, the gas ejection portions are integrally provided at both ends in the longitudinal direction of the cylindrical coil portion, and the gas ejection portion is provided. Since the injection holes of the injection unit are directed in the direction of the coil and the inert gas is alternately injected from the gas injection unit, the generation of oxide scale on the surface of the work set in the coil is effectively prevented. Therefore, it is possible to easily obtain a workpiece having a high-precision heating surface quality with a simple configuration. In addition, the coil device can be easily set, exchanged, moved, and the like, so that a highly versatile coil device can be obtained.
【図１】本考案に係わる高周波誘導加熱用のコイル装置
の斜視図FIG. 1 is a perspective view of a coil device for high-frequency induction heating according to the present invention.
【図２】図１のＡ−Ａ線断面図FIG. 2 is a sectional view taken along line AA of FIG. 1;
【図３】図１のＢ−Ｂ線断面図FIG. 3 is a sectional view taken along line BB of FIG. 1;
１ ： コイル装置 ２ ： コイル部 ３、４ ： ガス噴出部 ３ｃ、４ｃ ： 噴出孔 ５ ： コイル １９ ： 高周波発生装置 ２０ ： ガス供給装置 ２１ ： ワーク 1: coil device 2: coil portion 3, 4: gas ejection portion 3c, 4c: ejection hole 5: coil 19: high-frequency generator 20: gas supply device 21: work
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H05B 6/36 H05B 6/10 361 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. 7 , DB name) H05B 6/36 H05B 6/10 361
Claims (1)
の両端が高周波発生装置に接続された筒状のコイル部
と、該コイル部の長手方向両端部に一体的に配設され複
数の噴射孔をそれぞれ有する一対のガス噴射部とを備
え、前記ガス噴射部の噴射孔をコイル部方向にそれぞれ
指向させると共に、一対のガス噴射部からコイル部内に
不活性ガスを交互に噴出させて、コイル部内に配置され
たワークを高周波誘導加熱することを特徴とする高周波
誘導加熱用のコイル装置。A conductive pipe is bent into a predetermined shape, both ends of which are connected to a high-frequency generator. A plurality of coils are provided integrally at both ends in the longitudinal direction of the coil part. With a pair of gas injection units each having an injection hole, while directing the injection holes of the gas injection unit in the direction of the coil unit, respectively, alternately ejecting an inert gas into the coil unit from the pair of gas injection units, A coil device for high-frequency induction heating, wherein high-frequency induction heating is performed on a work disposed in a coil portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992081457U JP2603349Y2 (en) | 1992-10-31 | 1992-10-31 | Coil device for high frequency induction heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992081457U JP2603349Y2 (en) | 1992-10-31 | 1992-10-31 | Coil device for high frequency induction heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0641095U JPH0641095U (en) | 1994-05-31 |
| JP2603349Y2 true JP2603349Y2 (en) | 2000-03-06 |
Family
ID=13746937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992081457U Expired - Fee Related JP2603349Y2 (en) | 1992-10-31 | 1992-10-31 | Coil device for high frequency induction heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2603349Y2 (en) |
-
1992
- 1992-10-31 JP JP1992081457U patent/JP2603349Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641095U (en) | 1994-05-31 |
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