JPH05129070A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JPH05129070A JPH05129070A JP28804491A JP28804491A JPH05129070A JP H05129070 A JPH05129070 A JP H05129070A JP 28804491 A JP28804491 A JP 28804491A JP 28804491 A JP28804491 A JP 28804491A JP H05129070 A JPH05129070 A JP H05129070A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- medium
- heat exchange
- coil
- high frequency
- 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
- General Induction Heating (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば射出成形機に用
いられる金型を加熱する加熱装置に関し、特に、製造、
組み立てが簡単であり、高周波加熱コイル自体に独立の
冷却手段を必要とせず、また、加熱エネルギの伝達効率
等の高周波電源部と高周波加熱コイル部との電気的な調
整を容易とした加熱装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for heating a mold used in, for example, an injection molding machine.
A heating device that is easy to assemble, does not require an independent cooling means in the high frequency heating coil itself, and facilitates electrical adjustment between the high frequency power supply unit and the high frequency heating coil unit, such as efficiency of heating energy transfer. ..
【０００２】[0002]
【従来の技術】近年、射出成形機によって製造された成
形品が種々の分野にわたって使用されている。この成形
品の製造にあたって、金型を常温のまま使用する射出成
形においては、成形空間（キャビテイ）に注入された溶
融樹脂が、金型により冷却されて流動中に硬化し始め、
これが原因となって、成形品に線状の縞、すなわちウエ
ルドが生じ、成形品の品質の低下を招いている。2. Description of the Related Art In recent years, molded products produced by injection molding machines have been used in various fields. In the production of this molded product, in injection molding in which the mold is used at room temperature, the molten resin injected into the molding space (cavity) is cooled by the mold and begins to cure while flowing.
As a result of this, linear stripes, that is, welds are formed on the molded product, resulting in deterioration of the quality of the molded product.
【０００３】このウエルドは、成形材料である溶融樹脂
が流れる金型の部分を加熱することによって防止するこ
とができ、射出成形機において、金型を加熱するための
加熱装置が使用されている。This weld can be prevented by heating the portion of the mold through which the molten resin as the molding material flows, and in an injection molding machine, a heating device for heating the mold is used.
【０００４】従来、この加熱装置は、金型内に溶融樹脂
を注入する前に、当該金型を加熱し、樹脂の注入後の型
開き前に金型を冷却するように構成されている。これ
は、常時金型を加熱する方法では、金型の熱分布が変わ
って成形条件が不安定になるとともに、注入した樹脂の
硬化時間が長くなり、製品取り出しまでに時間がかかる
という問題を生じるためである。Conventionally, this heating device is constructed so as to heat the mold before injecting the molten resin into the mold and cool the mold before opening the mold after injecting the resin. This is because in the method of constantly heating the die, the heat distribution of the die changes and the molding conditions become unstable, and the curing time of the injected resin becomes long, and it takes time to take out the product. This is because.
【０００５】図８、図９は上記従来の加熱装置の構成を
示す図である。従来の加熱装置は、高周波電源１０と、
該高周波電源１０に接続された高周波加熱コイル１２か
らなり、この高周波加熱コイル１２中に被加熱物である
油等の加熱媒体１６を通す媒体通路１４を配置した図７
の構成、または、高周波加熱コイル１３の近傍に加熱媒
体１６を通す媒体通路１５を配置した図６の構成となっ
ている。なお、参照符号１８は高周波加熱コイル１２を
冷却するための冷却媒体である。FIG. 8 and FIG. 9 are views showing the structure of the conventional heating device. The conventional heating device includes a high frequency power source 10,
FIG. 7 shows a high-frequency heating coil 12 connected to the high-frequency power source 10, in which a medium passage 14 for passing a heating medium 16 such as oil to be heated is placed.
Or the structure of FIG. 6 in which the medium passage 15 for passing the heating medium 16 is arranged in the vicinity of the high-frequency heating coil 13. Reference numeral 18 is a cooling medium for cooling the high frequency heating coil 12.
【０００６】[0006]
【発明が解決しようとする課題】上記従来の加熱装置に
おいては、高周波加熱コイル１２、１３と加熱媒体１６
を通す媒体通路１４、１５が分離した構成となってお
り、それぞれ別の部材で構成されており、また、高周波
加熱コイル１２、１３自体の冷却を行うための冷却手段
が別途必要である。In the above conventional heating device, the high frequency heating coils 12 and 13 and the heating medium 16 are used.
The medium passages 14 and 15 that pass therethrough are separated from each other, each of them is composed of a different member, and a cooling means for cooling the high-frequency heating coils 12 and 13 itself is required separately.
【０００７】従って、部品点数が多く、組み立て時に、
高周波加熱コイル１２、１３と加熱媒体１６を通す媒体
通路１４、１５相互の位置合わせも極めて面倒なものと
なる。なお、高周波加熱コイル１２、１３と加熱媒体１
６を通す媒体通路１４、１５相互の位置が所定の関係に
設定されていないと、加熱エネルギの伝達効率が変化す
ることがあり、これによって不都合が生じる。また、製
造、組み立てが複雑となり、そのための工数が増大する
という不都合も生じる。Therefore, the number of parts is large, and during assembly,
The mutual alignment of the medium passages 14 and 15 for passing the high-frequency heating coils 12 and 13 and the heating medium 16 is also extremely troublesome. The high frequency heating coils 12 and 13 and the heating medium 1
If the positions of the medium passages 14 and 15 through which 6 is passed are not set in a predetermined relationship, the efficiency of heating energy transfer may change, which causes inconvenience. In addition, manufacturing and assembling become complicated, and the number of man-hours for that is increased, which is also a disadvantage.
【０００８】本発明は、上記の問題を解決するためにな
されたものであり、製造、組み立てが簡単であり、高周
波加熱コイル自体に独立の冷却手段を必要とせず、ま
た、加熱エネルギの伝達効率等の高周波電源部と加熱誘
導コイル部との電気的な調整が容易な加熱装置を提供す
ることを目的とする。The present invention has been made to solve the above problems, is easy to manufacture and assemble, does not require an independent cooling means in the high frequency heating coil itself, and has a heating energy transfer efficiency. It is an object of the present invention to provide a heating device in which electrical adjustment between a high-frequency power supply unit such as the above and a heating induction coil unit is easy.
【０００９】[0009]
【課題を解決するための手段】前記の目的を達成するた
めに、本発明は、高周波加熱コイルにより形成される空
間内に、加熱媒体の流路を有する熱交換部を配設し、前
記熱交換部において加熱された前記加熱媒体により、被
加熱体を加熱する加熱装置において、前記熱交換部の加
熱媒体流路の端部と、高周波加熱コイル冷却用媒体の流
路を構成する中空状の前記高周波加熱コイルの端部とを
接続することで、前記加熱媒体の流路と前記冷却用媒体
の流路とを連通することを特徴とする。In order to achieve the above object, the present invention provides a heat exchange section having a flow path of a heating medium in a space formed by a high frequency heating coil, In the heating device for heating the object to be heated by the heating medium heated in the exchanging part, the end part of the heating medium flow path of the heat exchanging part and the hollow shape forming the flow path of the high-frequency heating coil cooling medium. The flow path of the heating medium and the flow path of the cooling medium are connected by connecting the end of the high-frequency heating coil.
【００１０】[0010]
【作用】本発明に係る加熱装置は、中空状の高周波加熱
コイルの端部と、熱交換部の加熱媒体流路の端部とを接
続し、被加熱体を加熱する加熱媒体と高周波加熱コイル
を冷却する冷却用媒体とを共通として、冷却手段を不要
としたものである。The heating device according to the present invention comprises a high frequency heating coil and a heating medium for heating an object to be heated by connecting the end of the hollow high frequency heating coil and the end of the heating medium flow path of the heat exchange section. The cooling means for cooling is used in common and the cooling means is not required.
【００１１】[0011]
【実施例】図１は、本発明に係る加熱装置の実施例を示
す図であり、加熱装置２０は、高周波電源２２と、高周
波加熱コイル２４と、熱交換部２６とから構成されてい
る。1 is a diagram showing an embodiment of a heating device according to the present invention, wherein a heating device 20 comprises a high frequency power source 22, a high frequency heating coil 24, and a heat exchange section 26.
【００１２】高周波加熱コイル２４により形成される空
間内に、熱交換部２６が配設されており、熱交換部２６
は熱媒体３０の流路をコイル状とし、高周波加熱コイル
２４とほぼ同芯に配設される。高周波加熱コイル２４は
中空状とされており、熱交換部２６の加熱媒体流路の端
部と、前記中空状の高周波加熱コイル２４の端部とが連
通され、実質上、一つの管路を構成している。高周波電
源２２は、高周波加熱コイル２４の端部間に接続され、
熱交換部２６には、実質上、高周波電流が流れないよう
に構成されている。従って、熱交換部２６は、それ自体
によって磁束を発生させることはなく、電気的コイルと
しては機能しない状態となっている。A heat exchange section 26 is disposed in the space formed by the high frequency heating coil 24, and the heat exchange section 26 is provided.
Has a coil-shaped flow path for the heat medium 30 and is arranged substantially concentrically with the high-frequency heating coil 24. The high-frequency heating coil 24 is hollow, and the end of the heating medium flow path of the heat exchange section 26 and the end of the hollow high-frequency heating coil 24 are communicated with each other, and substantially one pipe line is formed. I am configuring. The high frequency power supply 22 is connected between the ends of the high frequency heating coil 24,
The heat exchange section 26 is configured so that a high frequency current does not substantially flow therethrough. Therefore, the heat exchange section 26 does not generate magnetic flux by itself and is in a state of not functioning as an electric coil.
【００１３】この場合、中空状の高周波加熱コイル２４
が熱媒体３０の流路の一部となり、熱交換部２６のコイ
ル内を流れる油等の熱媒体３０は、熱交換部２６を通る
とともに、中空状の高周波加熱コイル２４中を流れるこ
ととなる。従って、前記熱媒体３０は、熱交換部２６に
対して加熱媒体として機能し、高周波加熱コイル２４に
対しては冷却媒体として機能する。また、高周波加熱コ
イル２４と熱交換部２６とは一体に構成されるため、相
互の位置関係を正確に設定することができる。In this case, the hollow high-frequency heating coil 24
Becomes a part of the flow path of the heat medium 30, and the heat medium 30 such as oil flowing in the coil of the heat exchanging section 26 flows through the heat exchanging section 26 and also in the hollow high-frequency heating coil 24. .. Therefore, the heat medium 30 functions as a heating medium for the heat exchange section 26, and functions as a cooling medium for the high frequency heating coil 24. Further, since the high frequency heating coil 24 and the heat exchange section 26 are integrally formed, the mutual positional relationship can be set accurately.
【００１４】なお、熱交換部２６の側周部を、図２に示
すように、上下方向に溶接等（溶接部２７参照）で電気
的に接続し、あるいは、導板体２９で電気的に接続する
ように構成すれば、高周波電源２２の一方の端部を高周
波加熱コイル２４の端部Ａに接続し、他方の端部を熱交
換部２６の端部Ｂに接続することができる。As shown in FIG. 2, the side peripheral portion of the heat exchanging portion 26 is electrically connected in the vertical direction by welding or the like (see the welding portion 27), or is electrically connected by the conducting plate body 29. If configured to connect, one end of the high frequency power supply 22 can be connected to the end A of the high frequency heating coil 24, and the other end can be connected to the end B of the heat exchange unit 26.
【００１５】図３は、本発明に係る加熱装置の他の実施
例を示す。加熱装置３２は、図１の実施例と同様に、高
周波電源３４と、高周波加熱コイル３６と、熱交換部３
８とから構成されている。この場合、熱交換部３８は、
図４の断面図に示すように、高周波加熱コイル３６の中
心軸と同軸の円筒の外周面に沿って折曲して配設された
管体で構成されている。この加熱装置３２は、図１の加
熱装置２０と同様の機能を有している。FIG. 3 shows another embodiment of the heating device according to the present invention. The heating device 32 includes a high frequency power supply 34, a high frequency heating coil 36, and a heat exchange section 3 as in the embodiment of FIG.
8 and. In this case, the heat exchange section 38 is
As shown in the cross-sectional view of FIG. 4, it is formed of a tubular body that is bent along the outer peripheral surface of a cylinder coaxial with the central axis of the high-frequency heating coil 36. The heating device 32 has the same function as the heating device 20 of FIG.
【００１６】図５は、本発明に係る加熱装置のさらに他
の実施例を示す。加熱装置４０は、図１の実施例と同様
に、高周波電源４２と、高周波加熱コイル４４と、熱交
換部４６とから構成されている。この場合、熱交換部４
６は、図６の断面図に示すように、高周波加熱コイル４
４の中心軸と同軸の円筒内に折曲して配設された管体で
構成されている。この場合も、図１の加熱装置２０と同
様の機能を有している。FIG. 5 shows still another embodiment of the heating device according to the present invention. The heating device 40 includes a high frequency power source 42, a high frequency heating coil 44, and a heat exchange section 46, as in the embodiment of FIG. In this case, the heat exchange unit 4
6 is a high frequency heating coil 4 as shown in the sectional view of FIG.
It is configured by a tubular body that is bent and disposed in a cylinder coaxial with the central axis of No. 4. Also in this case, it has the same function as the heating device 20 of FIG.
【００１７】図７は、上記の加熱装置２０、３２または
４０が適用された射出成形機における加熱部の構成を示
す図である。加熱装置２０（３２、４０）は、油等の熱
媒体３０が蓄積されたタンク４８に加熱媒体流路５０ａ
を介して接続されている。モータ５２とポンプ５４によ
り熱媒体３０が加熱装置２０（３２、４０）に供給さ
れ、加熱装置２０（３２、４０）で加熱された熱媒体３
０は、加熱媒体として金型５６内の流路５８を流れ、金
型５６を加熱した後、オイルクーラ６０により、金型５
６から戻った熱媒体３０が冷却される構成となってい
る。なお、参照符号６２は開閉弁、６４、６６は逆止弁
であり、加熱媒体流路５０ａ、５０ｂの開閉と、熱媒体
３０の逆流を阻止するためのものである。FIG. 7 is a diagram showing the construction of a heating section in an injection molding machine to which the above heating device 20, 32 or 40 is applied. The heating device 20 (32, 40) includes a heating medium passage 50a in a tank 48 in which a heating medium 30 such as oil is accumulated.
Connected through. The heat medium 30 is supplied to the heating device 20 (32, 40) by the motor 52 and the pump 54, and is heated by the heating device 20 (32, 40).
0 flows through the flow path 58 in the mold 56 as a heating medium, heats the mold 56, and then the mold 5 is heated by the oil cooler 60.
The heat medium 30 returned from 6 is cooled. Reference numeral 62 is an open / close valve, and reference numerals 64 and 66 are check valves for blocking the opening / closing of the heating medium flow paths 50a, 50b and the backflow of the heating medium 30.
【００１８】このように構成された加熱部の動作につい
て説明する。The operation of the heating unit configured as above will be described.
【００１９】モータ５２によりポンプ５４が駆動され、
タンク４８から熱媒体３０が開閉弁６２を介して流れ、
加熱装置２０（３２、４０）に導入される。加熱装置２
０（３２、４０）で加熱された熱媒体３０は、逆止弁６
４を介して金型５６内の流路５８を流れ、金型５６が加
熱される。A pump 54 is driven by a motor 52,
The heat medium 30 flows from the tank 48 through the on-off valve 62,
It is introduced into the heating device 20 (32, 40). Heating device 2
The heat medium 30 heated at 0 (32, 40) is the check valve 6
4 flows through the flow path 58 in the mold 56 to heat the mold 56.
【００２０】すなわち、加熱装置２０の場合（図１参
照）、高周波加熱コイル２４の空間部に発生する磁束に
よって熱交換部２６が加熱され、前記熱交換部２６内を
流通する熱媒体３０が加熱される。この加熱された熱媒
体３０は、加熱媒体として金型５６に供給され、金型５
６を加熱する。ここで、前記熱媒体３０は、タンク４８
から高周波加熱コイル２４を介して熱交換部２６に供給
されている。従って、この熱媒体３０は、高周波加熱コ
イル２４を冷却した後、熱交換部２６で加熱されるた
め、前記高周波コイル２４に対しては冷却媒体として機
能する。この結果、高周波加熱コイル２４を冷却するた
めの冷却手段を特別に設けることは不要となり、また、
高周波の電気的調整も容易となる。なお、他の加熱装置
３２、４０においても同様の効果が得られる。That is, in the case of the heating device 20 (see FIG. 1), the heat exchange section 26 is heated by the magnetic flux generated in the space of the high-frequency heating coil 24, and the heat medium 30 flowing in the heat exchange section 26 is heated. To be done. The heated heat medium 30 is supplied to the die 56 as a heating medium, and the die 5
Heat 6. Here, the heat medium 30 is the tank 48.
Is supplied to the heat exchange section 26 from the high frequency heating coil 24. Therefore, since the heat medium 30 is heated by the heat exchange section 26 after cooling the high frequency heating coil 24, it functions as a cooling medium for the high frequency coil 24. As a result, it is not necessary to provide special cooling means for cooling the high frequency heating coil 24, and
High frequency electrical adjustment is also facilitated. Similar effects can be obtained with the other heating devices 32 and 40.
【００２１】金型５６内の加熱媒体流路５８を通過した
熱媒体３０は、逆止弁６６を通り、オイルクーラ６０に
より冷却され、タンク４８に戻される。タンク４８に戻
された冷却済みの熱媒体３０は、金型の冷却、型開き時
には前記と同様の経路で加熱装置２０（３２、４０）か
ら金型５６へと流され、再使用される。The heat medium 30 passing through the heating medium flow path 58 in the mold 56 passes through the check valve 66, is cooled by the oil cooler 60, and is returned to the tank 48. The cooled heat medium 30 returned to the tank 48 is flowed from the heating device 20 (32, 40) to the mold 56 and reused when the mold is cooled and the mold is opened.
【００２２】[0022]
【発明の効果】本発明に係る加熱装置によれば、以下の
効果が得られる。According to the heating device of the present invention, the following effects can be obtained.
【００２３】すなわち、本発明は、高周波加熱コイルに
より形成される空間内に、熱媒体の流路を有する熱交換
部を配設し、前記熱交換部によって加熱された前記熱媒
体により、被加熱体を加熱する加熱装置において、前記
熱媒体を中空状の高周波加熱コイルを介して熱交換部に
供給している。That is, according to the present invention, a heat exchange section having a flow path for a heat medium is arranged in a space formed by a high-frequency heating coil, and is heated by the heat medium heated by the heat exchange section. In a heating device for heating a body, the heat medium is supplied to the heat exchange section via a hollow high-frequency heating coil.
【００２４】この場合、前記熱媒体は、高周波加熱コイ
ル内を流通する際には当該コイルを冷却する冷却媒体と
して機能し、また、熱交換部内を流通する際には前記コ
イルによって加熱されるため、加熱媒体として機能す
る。従って、高周波加熱コイルに対して特別な冷却手段
を設ける必要がなくなり、構成が簡易化されるととも
に、制御自体も容易なものとなる。In this case, the heat medium functions as a cooling medium for cooling the coil when flowing through the high frequency heating coil, and is heated by the coil when flowing through the heat exchange section. , Functions as a heating medium. Therefore, it is not necessary to provide a special cooling means for the high-frequency heating coil, the structure is simplified, and the control itself is facilitated.
【００２５】また、高周波加熱コイルに対して熱交換部
が一体に構成されるため、これらの相対的な位置合わせ
を正確に行うことが可能となる。Further, since the heat exchanging portion is integrally formed with the high frequency heating coil, it is possible to accurately perform relative positioning of these.
【００２６】さらに、高周波加熱コイルと熱媒体を通す
媒体通路の位置を一定に保持することが容易となるた
め、加熱エネルギの伝達効率が変化することはなく、高
周波電源部と加熱誘導コイル部との電気的な調整が容易
となる。Further, since it becomes easy to keep the positions of the high-frequency heating coil and the medium passage through which the heat medium passes constant, the transfer efficiency of heating energy does not change, and the high-frequency power supply section and the heating induction coil section are not changed. It becomes easy to electrically adjust.
【図１】本発明に係る加熱装置の実施例の構成図であ
る。FIG. 1 is a configuration diagram of an embodiment of a heating device according to the present invention.
【図２】本発明に係る加熱装置の他の実施例の構成図で
ある。FIG. 2 is a configuration diagram of another embodiment of the heating device according to the present invention.
【図３】本発明に係る加熱装置の他の実施例の構成図で
ある。FIG. 3 is a configuration diagram of another embodiment of the heating device according to the present invention.
【図４】図３の実施例におけるIV−IV線断面図である。4 is a sectional view taken along line IV-IV in the embodiment of FIG.
【図５】本発明に係る加熱装置のさらに他の実施例の構
成図である。FIG. 5 is a configuration diagram of still another embodiment of the heating device according to the present invention.
【図６】図５の実施例におけるVI−VI線断面図である。6 is a sectional view taken along line VI-VI in the embodiment of FIG.
【図７】本発明に係る加熱装置が適用される射出成形機
の加熱部の構成図である。FIG. 7 is a configuration diagram of a heating unit of an injection molding machine to which the heating device according to the present invention is applied.
【図８】従来の加熱装置の構成図である。FIG. 8 is a configuration diagram of a conventional heating device.
【図９】従来の他の加熱装置の構成図である。FIG. 9 is a configuration diagram of another conventional heating device.
２０、３２、４０…加熱装置 ２２、３４、４２…高周波電源 ２４、３６、４４…高周波加熱コイル ２６、３８、４６…熱交換部 ３０…熱媒体 20, 32, 40 ... Heating device 22, 34, 42 ... High frequency power supply 24, 36, 44 ... High frequency heating coil 26, 38, 46 ... Heat exchange section 30 ... Heat medium
Claims (3)
に、加熱媒体の流路を有する熱交換部を配設し、前記熱
交換部において加熱された前記加熱媒体により、被加熱
体を加熱する加熱装置において、 前記熱交換部の加熱媒体流路の端部と、高周波加熱コイ
ル冷却用媒体の流路を構成する中空状の前記高周波加熱
コイルの端部とを接続することで、前記加熱媒体の流路
と前記冷却用媒体の流路とを連通することを特徴とする
加熱装置。1. A heat exchange section having a flow path for a heating medium is provided in a space formed by a high-frequency heating coil, and a heated object is heated by the heating medium heated in the heat exchange section. In the heating device, by connecting the end of the heating medium flow path of the heat exchange unit and the end of the hollow high-frequency heating coil that constitutes the flow path of the high-frequency heating coil cooling medium, the heating medium And a flow path of the cooling medium are communicated with each other.
せることのないコイル状に構成し、前記高周波加熱コイ
ルにより形成される空間内に、当該高周波加熱コイルと
ほぼ同芯で前記熱交換部を配設したことを特徴とする加
熱装置。2. The heating device according to claim 1, wherein the heating medium flow path of the heat exchange section is formed in a coil shape that does not substantially generate magnetic flux, and is formed by the high-frequency heating coil. A heating device in which the heat exchange section is arranged substantially coaxially with the high-frequency heating coil.
せることがなく、前記高周波加熱コイルの中心軸とほぼ
平行となるように折曲して配設されたパイプで構成し、
前記高周波加熱コイルにより形成される空間内に、当該
高周波加熱コイルとほぼ同芯で前記熱交換部を配設した
ことを特徴とする加熱装置。3. The heating device according to claim 1, wherein the heating medium flow path of the heat exchange section is substantially parallel to the central axis of the high frequency heating coil without substantially generating magnetic flux. Composed of bent pipes,
A heating device characterized in that the heat exchange section is arranged substantially concentrically with the high frequency heating coil in a space formed by the high frequency heating coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28804491A JPH05129070A (en) | 1991-11-01 | 1991-11-01 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28804491A JPH05129070A (en) | 1991-11-01 | 1991-11-01 | Heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05129070A true JPH05129070A (en) | 1993-05-25 |
Family
ID=17725111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28804491A Pending JPH05129070A (en) | 1991-11-01 | 1991-11-01 | Heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05129070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007080715A (en) * | 2005-09-15 | 2007-03-29 | Omron Corp | Electromagnetic induction fluid heating device |
-
1991
- 1991-11-01 JP JP28804491A patent/JPH05129070A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007080715A (en) * | 2005-09-15 | 2007-03-29 | Omron Corp | Electromagnetic induction fluid heating device |
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