JP2015126645A - Heating method of stator of electric machine and heating device - Google Patents
Heating method of stator of electric machine and heating device Download PDFInfo
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- JP2015126645A JP2015126645A JP2013270809A JP2013270809A JP2015126645A JP 2015126645 A JP2015126645 A JP 2015126645A JP 2013270809 A JP2013270809 A JP 2013270809A JP 2013270809 A JP2013270809 A JP 2013270809A JP 2015126645 A JP2015126645 A JP 2015126645A
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本発明は電動機械の固定子の加熱方法、及び加熱装置に関するものである。 The present invention relates to a method for heating a stator of an electric machine and a heating device.
電動機械（電動機（モータ）や、発電機（ジェネレータ）、又は、両者の機能を併せ持つ電気機械）の固定子に巻き線された電線コイルや固定子コアの水分除去やアニール処理のための予備加熱や、ワニスを塗布した後ワニスを硬化させるための加熱（本加熱）をできるだけ少ないエネルギーで効率的に行う加熱方式として、固定子を電磁誘導加熱する方式がある。この方式は、乾燥炉全体をワニスの予備加熱や硬化加熱に必要な温度に加熱し、ここに被加熱部材を投入する従来の方式に比べ、被加熱部材自身を加熱する方式の為、少ないエネルギーで効率的に加熱できるため、近年実用化されてきている。 Preheating for removal of moisture and annealing of wire coils and stator cores wound around the stator of an electric machine (electric motor (motor), generator (generator), or electric machine having both functions) In addition, as a heating method for efficiently performing heating (main heating) for curing the varnish after applying the varnish with as little energy as possible, there is a method of electromagnetically heating the stator. This method heats the entire drying furnace to the temperature required for pre-heating and curing of the varnish, and heats the heated member itself compared to the conventional method in which the heated member is charged here, so it requires less energy. In recent years, it has been put to practical use.
最近の事例では、かご型モータのような分布巻き方式で、モータコイル間の渡り線が複雑に入り組んだ製品のように、ステータの外側にこの渡り線が大きく飛び出した状態（以下この部分をコイルエンドと称する）の製品への適用事例が報告されている。この部分へのワニス塗布、及び硬化もスロット内部と同時に最適化させるため、コイルエンドへのワニスの塗布姿勢は、電動機械の円筒中心を軸にして水平に姿勢を保持して、これを回転させながらモータコイルエンド及び電動機械スロット入り口付近にワニスを滴下して、ワニスを毛細管現象によりスロット内部に高密度に浸透させる方式が、性能上も使用エネルギー上も合理的な方法として採用されている（例えば特許文献１）。 In a recent example, a distributed winding method such as a squirrel-cage motor, where the connecting wire between the motor coils is intricately entangled, the connecting wire protrudes greatly outside the stator. Application cases to products have been reported. In order to optimize the varnish application and curing to this part at the same time as the inside of the slot, the varnish application position to the coil end is kept horizontal with the cylinder center of the electric machine as the axis, and this is rotated. However, a method in which varnish is dropped near the motor coil end and the electric machine slot entrance and the varnish penetrates into the slot at high density by capillary action is adopted as a rational method in terms of performance and energy consumption ( For example, Patent Document 1).
現在、自動車用モータのように、少ないスペースに扁平な電動機械を実装できる方式として、集中巻き方式の電動機械が多く採用されてきている。この電動機械は、モータコイル間の渡り線を、個別にバスバーなどに接続することで電動機械の積み厚方向への張り出しを極限まで薄く出来る利点があるため、前述のようなコイルエンドの張り出しが存在しない。 Currently, a concentrated winding type electric machine has been widely adopted as a method of mounting a flat electric machine in a small space like an automobile motor. This electric machine has the advantage that the overhang in the stacking direction of the electric machine can be made extremely thin by connecting the connecting wires between the motor coils individually to a bus bar or the like. not exist.
このため、前述のようなワニスを滴下する方式の場合、水平状態では、ワニスの滴下が不可能である。この場合、モータコイル固定用ワニス塗布時はステータを斜めにして塗布し硬化させた後、バスバーの固定や接続部の絶縁処理は、ステータの回転軸が、垂直方向で真上に向く状態に保持して、バスバーおよびバスバーケースに樹脂を塗布する事例が多く見受けられる。 For this reason, in the case of the method of dripping the varnish as described above, it is impossible to drop the varnish in the horizontal state. In this case, when applying the varnish for fixing the motor coil, the stator is applied at an angle and cured, and then the bus bar is fixed and the insulation of the connection part is kept in a state in which the rotation axis of the stator faces vertically upward. In many cases, the resin is applied to the bus bar and the bus bar case.
最近の事例では、モータコイルのワニス硬化処理終了後、渡り線のバスバーとの接続部などの突起部分も、あわせて絶縁処理する為、背の高いバスバーカバーをバスバーケースの周囲に取り付け、ここにシリコン樹脂などを流し込んで固める方式が多く見受けられる。このシリコン樹脂は、例えばエポキシ性のワニスの硬化に対し、硬化を阻害する化学反応がおきやすく、エポキシ性ワニスかシリコン樹脂どちらかが、完全に硬化した後でないと次の工程に移れないため専用の生産設備それぞれが、必要になり効率が悪い。 In a recent case, after finishing the varnish hardening of the motor coil, the projecting part such as the connecting part of the crossover bus bar is also insulated, so a tall bus bar cover is attached around the bus bar case, There are many methods of pouring and hardening silicon resin. This silicone resin has a chemical reaction that inhibits curing, for example, when curing an epoxy varnish, and either the epoxy varnish or silicone resin must be completely cured before proceeding to the next step. Each of these production facilities is necessary and inefficient.
したがって、現状では、電磁誘導加熱方式により１つの生産設備で、両者を同時に高密度充填させることが極めて困難である。 Therefore, at present, it is extremely difficult to simultaneously fill both of them at high density with one production facility by the electromagnetic induction heating method.
そこで本発明は、コイルエンドの張り出しが無くても電磁誘導加熱方式の利点である毛細管現象を利用し、バスバーおよび集中巻きモータコイル部（スロット内部含む）およびバスバーとモータコイルの結線部分へのワニスの高密度充填を可能にして、かつバスバーとコイル部を同一のワニスで、同時に塗布し、１つの電磁誘導コイルでワニスを同時硬化させることで作業工程の簡略化を図り、作業効率や生産効率が良い、電磁誘導加熱による電動機械の固定子の加熱方法、及び加熱装置を提供することを目的とする。 Therefore, the present invention utilizes the capillary phenomenon which is an advantage of the electromagnetic induction heating method even if the coil end is not overhanged, and the varnish to the bus bar and the concentrated winding motor coil portion (including the inside of the slot) and the connection portion between the bus bar and the motor coil. High-density filling is possible, and the bus bar and coil are simultaneously applied with the same varnish, and the varnish is simultaneously cured with one electromagnetic induction coil, simplifying the work process, and improving work efficiency and production efficiency. An object of the present invention is to provide a method of heating a stator of an electric machine by electromagnetic induction heating and a heating device.
上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。本願は上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、集中巻きの電動機械の固定子を電磁誘導加熱して当該固定子に巻装されたコイル付近に塗布したワニスを硬化させる固定子の加熱方法であって、電磁誘導加熱部分が前記固定子の外周全体を覆い、バスバー側に巻き幅をオーバーラップさせた電磁誘導加熱用誘導コイルを備え、前記電磁誘導加熱部分においてコイルに流れる電磁誘導加熱電流が一方向になるように前記電磁誘導加熱コイルを巻回配置し、前記電磁誘導加熱コイルに電磁誘導加熱電流を供給すると共に、当該固定子を回転させながら加熱することを特徴とする。 In order to solve the above problems, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above problems. For example, a varnish applied to the vicinity of a coil wound around the stator by electromagnetic induction heating of a stator of a concentrated winding electric machine. The electromagnetic induction heating part includes an induction coil for electromagnetic induction heating that covers the entire outer periphery of the stator and overlaps the winding width on the bus bar side. The electromagnetic induction heating coil is wound and arranged so that the electromagnetic induction heating current flowing in the coil in one direction is supplied, and the electromagnetic induction heating current is supplied to the electromagnetic induction heating coil and heated while rotating the stator. It is characterized by that.
本発明によれば、作業効率や生産効率が良い、電磁誘導加熱による電動機械の固定子の加熱方法、及び加熱装置を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the heating method and the heating apparatus of the stator of the electric machine by electromagnetic induction heating which have good work efficiency and production efficiency can be provided.
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。 Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
以下、本発明の実施例を説明する。
［概要］
複数のモータコイル端末部分を、バスバーに連続して接続した状態のモータ駆動回路は、モータコイル端末がバスバーの上空を跳び越して必要なバスバーの接続先に接続されている（以下これを渡り線と称する）。このモータ駆動回路及びバスバーとの接続部分や渡り線も、モータコイルやバスバーと同一のワニスで一体硬化させることにより、最初に示した分布巻のコイルエンドが大きく膨らんだ電動機械と同様に、同一設備で、同一ワニスを使用し、高密度にワニスを充填させれば、安価な設備で、作業工程も簡略化できる。
Examples of the present invention will be described below.
[Overview]
In the motor drive circuit in which a plurality of motor coil terminal portions are continuously connected to the bus bar, the motor coil terminal jumps over the bus bar and is connected to a necessary bus bar connection destination (hereinafter referred to as a crossover). Called). This motor drive circuit and bus bar connection part and crossover are also the same as the electric machine in which the coil end of the distributed winding shown in the beginning is greatly expanded by integrally curing with the same varnish as the motor coil and bus bar. If the same varnish is used in the equipment and the varnish is filled at a high density, the work process can be simplified with an inexpensive equipment.
この問題点として、バスバーを収納するバスバーケースが、バスバーと同程度の高さのバスバーケースの場合、ワニスが電動機械の外側に漏れ落ちてしまい、後工程でワニスの拭き取りや、接続部分にワニスが十分に充填できず、また渡り線部分にもワニスが十分に充填できないという問題が発生する。 As a problem, if the bus bar case that houses the bus bar is the same height as the bus bar, the varnish leaks to the outside of the electric machine, and the varnish is wiped off in the subsequent process or the varnish Cannot be sufficiently filled, and the problem that the varnish cannot be sufficiently filled in the crossover portion occurs.
なお、バスバーケースの高さとバスバーの高さを同程度にする主な理由として、バスバーとモータコイルの接続時、接続用工具を入れ込むスペースを確保するなどの理由などが考えられる。 As a main reason for making the height of the bus bar case and the height of the bus bar comparable, there may be a reason for securing a space for inserting a connection tool when the bus bar and the motor coil are connected.
通常この場合、接続工程終了後、バスバーの突起部が覆われる程度に、バスバーケース上面にバスバーカバーを、別途、別部品として後付けし、この中に樹脂を流し込み固めている。この場合、部品費用や、作業工程の増加などが原価の増加要因になる。 Usually, in this case, after the connection process is completed, a bus bar cover is separately attached to the upper surface of the bus bar case as a separate part to the extent that the protruding portion of the bus bar is covered, and the resin is poured and hardened therein. In this case, the cost of parts is increased due to an increase in parts costs and work processes.
そこで、本発明は、集中巻き方式の電動機械のモータコイル部及びバスバー及びモータコイルとバスバー間の渡り線に同一ワニスを同時に塗布するため、ワニスを塗布する際、電動機械の回転軸に対し、１０度から４０度程度全体を傾けた状態でワニスを滴下塗布する。 Therefore, the present invention simultaneously applies the same varnish to the motor coil portion and bus bar of the concentrated winding type electric machine and the connecting wire between the motor coil and the bus bar, so when applying the varnish to the rotating shaft of the electric machine, The varnish is dropped and applied in a state where the whole is tilted by about 10 to 40 degrees.
この際、ワニスがステータ外側に漏れ出さないよう、ステータの外側を円筒カバーで密着して覆い、かつバスバー側は、モータコイル接続部や渡り線にワニス溜りが出来る程度にバスバーケースをオーバーハングし、さらにバスバーケースに折り返しなどをあらかじめ設け、ワニス漏れ止めも兼ねた円筒カバーとしておく。 At this time, in order to prevent the varnish from leaking to the outside of the stator, the outer side of the stator is closely covered with a cylindrical cover, and the bus bar side overhangs the bus bar case to such an extent that the varnish can be accumulated in the motor coil connection part and the connecting wire. In addition, the bus bar case is provided with a folding back or the like in advance, and a cylindrical cover that also serves to prevent varnish leakage is provided.
なお、円筒カバーは、ワニス硬化後除去する為、ワニスと固着しにくく、電磁誘導が発生しない材料（例えば、フッ素系の樹脂）などが望ましい。 Since the cylindrical cover is removed after the varnish is cured, it is desirable to use a material (for example, fluorine-based resin) that does not easily adhere to the varnish and does not generate electromagnetic induction.
そして、この集中巻き方式の電動機械の固定子を予備加熱や本加熱させる方法として、電磁誘導加熱を利用し、加熱効率向上を図る。 As a method of preheating or main heating the stator of the concentrated winding type electric machine, electromagnetic induction heating is used to improve heating efficiency.
この電磁誘導加熱方式で、当該固定子に巻装されたモータコイル付近に塗布したワニス、およびモータコイルとバスバーへの渡り線、さらにバスバー内に塗布したワニスを硬化させるため、この付近の固定子を加熱し且つ、
使用するワニスは、上記で示した箇所全てを同一ワニスとし、１つの塗布装置、電磁誘導加熱装置で、モータコイル、渡り線、バスバーのワニスを一体硬化させる。
In this electromagnetic induction heating method, the varnish applied to the vicinity of the motor coil wound around the stator, the connecting wire to the motor coil and the bus bar, and the varnish applied to the inside of the bus bar are hardened. And heating
The varnish to be used is the same varnish in all the above-mentioned places, and the varnish of the motor coil, the crossover wire, and the bus bar is integrally cured with one coating device and electromagnetic induction heating device.
電磁誘導加熱のための電磁誘導加熱用コイルが当該固定子の外周全体を近接して覆い、この電磁誘導コイル部分が固定子の積み厚の厚みにほぼ一致する程度に巻き幅を合わせ、さらにバスバー側に電磁誘導コイルが固定子の積み厚幅より、上記固定子の積み厚幅の１／３から半分程度バスバー側にオーバーハングさせて覆い、当該誘導加熱部分において電磁誘導加熱用コイルに流れる誘導加熱電流が一方向になるように電磁誘導加熱コイルを巻回配置し、当該電磁誘導加熱コイルに電磁誘導加熱電流を供給すると共に、当該固定子を回転させながら加熱し、モータコイル部分と同時に、モータコイルとバスバーの渡り線およびバスバー部分のワニスを同時に硬化させることを特徴とする。 An electromagnetic induction heating coil for electromagnetic induction heating covers the entire outer periphery of the stator in close proximity, and the winding width is adjusted so that the electromagnetic induction coil portion substantially matches the thickness of the stator stack. The induction coil on the side covers the bus bar overhanging about 1/3 to half of the stator stack width from the stator stack width, and flows through the induction heating coil in the induction heating portion. The electromagnetic induction heating coil is wound and arranged so that the heating current is in one direction, and the electromagnetic induction heating current is supplied to the electromagnetic induction heating coil and heated while rotating the stator, simultaneously with the motor coil part, The motor coil and the busbar crossover and the varnish of the busbar portion are simultaneously cured.
ここで、電磁誘導加熱コイルを、積み厚幅に対し１／３から半分さらにバスバー側にオーバーハングさせて電磁誘導加熱コイルを巻きまわす理由は、電磁誘導加熱用コイル幅が、モータ積み厚よりオーバーハングされた状態で通電すると、このバスバー側のステータ端部に電磁誘導のエネルギーが集中しやすい性質を利用したものである。こうすることで、バスバー側の固定子端部にもワニスを硬化させるのに必要な、エネルギーを与えることができる。 Here, the reason why the electromagnetic induction heating coil is wound by overhanging the electromagnetic induction heating coil to 1/3 to half the stack thickness width further toward the bus bar is that the coil width for electromagnetic induction heating exceeds the stack thickness of the motor. When energized in a hung state, the energy of electromagnetic induction tends to concentrate on the end of the stator on the bus bar side. By carrying out like this, energy required in order to harden a varnish can also be given to the stator edge part by the side of a bus bar.
即ち、本発明は、電動機械の固定子に集中巻き方式で巻装されたコイル及びその渡り線、バスバー付近に塗布したワニスを、予熱、冷却、ワニス塗布、昇温、温度保持からなる温度プロファイルにより、当該部分をワニス硬化させるために、ワニス塗布、固定子の加熱方法であって、電磁誘導加熱部分は、当該固定子の外周全体を近接して覆い、さらに固定子の積み厚に対しバスバー側のみ積み厚の１／３から半分程度オーバーハングして覆い、当該誘導加熱部分においてコイルに流れる誘導加熱電流が一方向になるように誘導加熱コイルを巻回配置し、電磁誘導加熱のコイルへの通電レベルを前記温度プロファイルになるよう調整し、ステータの予備加熱昇温、通電停止後ステータを、ワニス塗布ステーションで水平回転軸に対し１０度から４０度程度傾けた状態で、ステータを連続回転させながらワニスを塗布し、塗布終了後ステータの回転軸を水平状態に戻し、ワニス塗布終了後も回転を保持しつつ、多少の保持時間を設け、予備加熱の余熱でワニス浸透およびワニスの半硬化を促進させる。 That is, the present invention relates to a temperature profile comprising preheating, cooling, varnish application, temperature increase, and temperature maintenance of a coil wound around a stator of an electric machine by a concentrated winding method, its connecting wire, and a varnish applied in the vicinity of a bus bar. In order to cure the part by varnish, the varnish application and the stator heating method, the electromagnetic induction heating part covers the entire outer periphery of the stator close to each other, and further the bus bar against the stator stack thickness Cover only about 1/3 to half of the stacking thickness on the side, and place the induction heating coil so that the induction heating current flowing in the coil in the induction heating portion is in one direction, to the electromagnetic induction heating coil The energization level of the stator is adjusted to the above temperature profile, and the stator is heated to 10 degrees with respect to the horizontal rotation axis at the varnish application station after the preheating temperature rise of the stator and the energization stop Applying varnish while rotating the stator continuously in an inclined state of about 40 degrees, returning the rotating shaft of the stator to a horizontal state after completion of application, and providing some holding time while maintaining rotation after completion of varnish application, Preheated residual heat promotes varnish penetration and varnish semi-curing.
引き続き、ステータを回転させながら電磁誘導加熱を再開し、ワニスに規定された硬化指定温度までステータを昇温する。この時の、昇温のペースは、ステータ内部（中心部）とモータコイル外側、バスバーケースのステータ接触部とバスバー外側に多少の温度差が生じる程度の昇温速度に設定することで、ワニスが毛細管現象で、ワニスが内部まで浸透する。 Subsequently, the electromagnetic induction heating is resumed while rotating the stator, and the stator is heated to the specified curing temperature defined in the varnish. The pace of temperature increase at this time is set to a temperature increase rate that causes a slight temperature difference between the inside of the stator (center portion) and the outside of the motor coil, and between the stator contact portion of the bus bar case and the outside of the bus bar. Capillary phenomenon causes the varnish to penetrate inside.
ワニスに規定された硬化温度に昇温が完了した状態では、ワニス自体は、硬化反応が完全に開始しているので、硬化保持は、熱風乾燥炉などを利用するなど温度保持方法は、生産物量により、種々選択肢がある。 In the state where the temperature rise is completed to the curing temperature specified for the varnish, the curing reaction of the varnish itself has completely started, so the curing retention is performed using a hot air drying furnace etc. There are various options.
例えば２４時間丸１日連続運転が必要な生産物量の場合などは、熱風乾燥炉でもエネルギーは温度保持のみで、運転開始時などで必要となる大きなエネルギーは必要なくなるので、省エネルギーの観点でも、エネルギー損失は、電磁誘導加熱を利用する場合に比べても大差は無い。 For example, in the case of a product quantity that requires continuous operation for 24 hours a day, the energy is only maintained in the hot air drying furnace, and the large energy required at the start of operation is not required. The loss is not much different than when electromagnetic induction heating is used.
本発明装置の構成は、電動機械の固定子を電磁誘導加熱して当該固定子に巻装されたモータコイル付近に付着したワニスを硬化させる固定子の加熱装置であって、固定子を回転させながら保持する固定子チャック冶具と、前記固定子チャック冶具により保持された前記固定子の両端に配置される一対のコイルエンド雰囲気保温カバーと、前記固定子チャック冶具により保持された前記固定子の外周全体を覆い、固定子の積み厚の厚みプラス、バスバー側に３／１から半分程度巻き幅がオーバーハングした巻き幅を有し、当該電磁誘導加熱部分において電磁誘導コイルに流れる電磁誘導加熱電流が一方向になるように当該固定子の全周に巻回された電磁誘導加熱コイルとを備え、当該電磁誘導加熱コイルに電磁誘導加熱電流を供給することにより固定子を加熱することを特徴とする。 The configuration of the device of the present invention is a stator heating device that cures the varnish adhering to the vicinity of the motor coil wound around the stator by electromagnetic induction heating of the stator of the electric machine, and rotates the stator. A stator chuck jig to be held, a pair of coil end atmosphere heat retaining covers disposed at both ends of the stator held by the stator chuck jig, and an outer periphery of the stator held by the stator chuck jig Covering the whole, the thickness of the stator stack plus plus the winding width overhanging about 3/1 to half on the bus bar side, the electromagnetic induction heating current flowing through the electromagnetic induction coil in the electromagnetic induction heating part is An electromagnetic induction heating coil wound around the entire circumference of the stator so as to be in one direction, and supplying an electromagnetic induction heating current to the electromagnetic induction heating coil. Characterized by heating the stator.
また、上記に記載した固定子の加熱装置において、前記バスバー側及び反バスバー側のモータコイル端側にも雰囲気保温カバーを設け、加熱されづらいモータコイルエンドやバスバー外側のワニスも完全に硬化させることができることを特徴とする。 Also, in the stator heating device described above, an atmosphere heat insulation cover is also provided on the motor coil end side on the bus bar side and the non-bus bar side so that the motor coil end that is not easily heated and the varnish outside the bus bar are completely cured. It is characterized by being able to.
また、上記に記載した固定子の加熱装置において、前記雰囲気保温カバーの少なくとも一方が、前記固定子チャック冶具により保持された前記固定子に対して移動可能になっていることを特徴とする。 Further, in the stator heating device described above, at least one of the atmosphere heat insulating covers is movable with respect to the stator held by the stator chuck jig.
なお、本発明では、前記に記載した誘導加熱による固定子の加熱方法において、前記温度プロファイルの温度保持において、当該固定子のスロット内部中央部の温度およびバスバーの収納ケース真下のステータ面をほぼ絶縁材耐熱温度とすると共に、当該固定子のコイルエンドおよびバスバー上面の温度を、前記絶縁材耐熱温度よりも低い温度にすることが好ましく、又は、前記温度プロファイルの予熱における当該固定子の温度上昇の傾斜より、前記ワニス塗布後の昇温における温度上昇の傾斜の方を低くすることが好ましい。 According to the present invention, in the method of heating a stator by induction heating described above, the temperature of the center portion inside the slot of the stator and the stator surface just below the storage case of the bus bar are substantially insulated in maintaining the temperature profile. It is preferable to set the temperature of the stator coil end and the top of the bus bar to a temperature lower than the heat resistance temperature of the insulating material, or to increase the temperature of the stator in the preheating of the temperature profile. It is preferable to make the inclination of the temperature rise in the temperature rise after the varnish application lower than the inclination.
そして、本発明では、固定子の加熱装置において、予備加熱後、多少の冷却・均熱時間を設け固定子の温度が、ワニスが高温で発泡するなどの影響の無い程度の高温の状態で固定子を回転しながらワニスの塗布を開始し、ワニス塗布終了後もワニスが半硬化するまで回転を維持する。このことで、ワニスがゲル状になりワニスの漏れがほとんどなくなる。 In the present invention, in the stator heating device, after the preheating, some cooling and soaking time is provided, and the stator temperature is fixed at a high temperature that does not affect the varnish foaming at a high temperature. Application of the varnish is started while rotating the child, and the rotation is maintained until the varnish is semi-cured even after the varnish application is completed. As a result, the varnish becomes a gel and there is almost no leakage of the varnish.
本発明によれば、固定子の全周を一方向に巻回しする電磁誘導加熱コイルにより電磁誘導加熱の効率が良く、大幅なエネルギーの削減が可能になる。 According to the present invention, the efficiency of electromagnetic induction heating is improved by the electromagnetic induction heating coil that winds the entire circumference of the stator in one direction, and energy can be significantly reduced.
また、必要時のみエネルギーを投入するようコントロールできるため、従来の乾燥炉方式などでは、作業待ちなどの空の時でも常時エネルギーを投入しなければ成らない状態と比較すると大幅なエネルギーの削減が可能になる。 In addition, since it can be controlled to input energy only when necessary, the conventional drying furnace method can greatly reduce energy compared to the state where energy must be constantly input even when empty such as waiting for work. become.
さらに、集中巻きモータのようなコイルエンドの張り出しが無いモータでも、スロット内部中央部分およびバスバーケースとステータ接触面の温度を、コイルエンド部分やバスバー上面より若干高くなるよう温度差をつけることで、
コイルエンド部やバスバー上面よりスロット内部中央部分やバスバーとステータ接触面側でのワニスの粘性を下げることができる。
Furthermore, even with a motor that does not overhang the coil end, such as a concentrated winding motor, by making a temperature difference so that the temperature inside the slot inner center part and the bus bar case and the stator contact surface is slightly higher than the coil end part and the bus bar upper surface,
The viscosity of the varnish at the central portion inside the slot and the bus bar / stator contact surface side can be lowered from the coil end portion and the bus bar upper surface.
このためワニスが毛細管現象でスロットやバスバーケース内部まで充分に浸透でき集中巻きモータのようなモータコイルとバスバーで構成された電動機械でも高密度で、かつ１種類のワニスで充填できるという利点がある。このことにより、作業工程が大幅に簡略化できる。 For this reason, the varnish can fully penetrate into the slot and bus bar case due to capillary action, and there is an advantage that even an electric machine composed of a motor coil and a bus bar such as a concentrated winding motor can be filled with one kind of varnish with high density. . This greatly simplifies the work process.
図１により、本発明の実施例１になる、ワニス漏れ防止カバーの取り付け状態を示す。 FIG. 1 shows an attached state of the varnish leakage prevention cover according to the first embodiment of the present invention.
図１（Ａ）の符号３は、集中巻き方式の電動機械のモータステータを示しており、符号１および２は、集中巻き方式の電動機械のステータの外周面に取り付けるワニス漏れ防止カバーを示している。このワニス漏れ防止カバーを取り付けることにより、符号７の集中巻きされたモータコイル、符号５のバスバー、符号４のバスバーケース、符号６のモータコイルとバスバーの渡り線の周囲に塗布するワニスが、ステータ外周側に漏れることを防止する役目を果たす。また、符号１及び２は、ワニス漏れ防止カバーの取り付け前状態を示しており、符号１０のモータへの電力入力端子と符号１及び２のワニス漏れ防止カバーを取り付け時、干渉しないよう半円状に、円筒半割構造とし、符号１０のモータへの電力入力端子が、符号１及び２のワニス漏れ防止カバーの外側に来るよう取り付け方法を工夫している。なお、符号１及び２のワニス漏れ防止カバーは、符号５のバスバー側の端面と、符号６のモータコイルとバスバーの渡り線の周囲にワニスだまりを形成しやすくする為、ステータ側に折り返しがついた構造として、よりワニスがたまりやすいように工夫している。 Reference numeral 3 in FIG. 1A indicates a motor stator of a concentrated winding electric machine, and reference numerals 1 and 2 indicate a varnish leakage prevention cover attached to the outer peripheral surface of the stator of the concentrated winding electric machine. Yes. By attaching this varnish leakage prevention cover, a concentrated winding motor coil of reference numeral 7, a bus bar of reference numeral 5, a bus bar case of reference numeral 4, a varnish to be applied around the connecting wire of the motor coil and bus bar of reference numeral 6 It plays the role of preventing leakage to the outer peripheral side. Reference numerals 1 and 2 indicate a state before the varnish leakage prevention cover is attached. When the power input terminal to the motor 10 and the varnish leakage prevention cover 1 and 2 are attached, they are semicircular so as not to interfere with each other. In addition, the mounting method is devised so that the power input terminal to the motor denoted by reference numeral 10 comes outside the varnish leakage prevention cover denoted by reference numerals 1 and 2 with a cylindrical half structure. The varnish leakage prevention covers 1 and 2 are folded back on the stator side in order to easily form a varnish pool around the bus bar end face 5 and the motor coil 6 busbar crossover. The structure is designed to make it easier to collect varnishes.
図２により、本発明の実施例２になる予備加熱後のワニス塗布方法を示す。なお、この実施例においても、上記の実施例と同様の構成要件は、上記と同じ符号により示されている。 FIG. 2 shows a varnish coating method after preheating according to Embodiment 2 of the present invention. Also in this embodiment, the same constituent elements as those in the above embodiment are indicated by the same reference numerals as above.
実施例２は実施例３で示す電磁誘導加熱で所定の温度に予備加熱した後、ワニスを塗布する方法を示したものである。 Example 2 shows a method of applying varnish after preheating to a predetermined temperature by electromagnetic induction heating shown in Example 3.
ワニス塗布工程及びその後のワニス硬化温度までの昇温工程では、ワニスの漏れを防止する為、電動機械のステータ本体は、図１の符号８、９のモータステータチャック機構で把持しながら、常時一定方向に連続回転させておくことが必要である。 In the varnish application process and the subsequent temperature raising process to the varnish curing temperature, the stator body of the electric machine is always constant while being gripped by the motor stator chuck mechanism indicated by reference numerals 8 and 9 in FIG. 1 in order to prevent leakage of the varnish. It is necessary to continuously rotate in the direction.
今回対象の集中巻き方式の電動機械のステータ本体は、コイルエンドが無い為、水平状態ではワニスを塗布できない。このため先ず初めに（Ａ）で示すとおりステータ本体を約１０度から４０度傾け、反バスバー側の面が多少上側に向くよう傾斜をつける。この状態で、ワニスを符号１１のワニス塗布ノズルを使用し、モータコイル部のコイルエンド側に、多少の揺動を加えながら、ワニスを塗布する。既定量のワニスの塗布が終了したら、一旦ステータ本体を水平にした状態で、ワニスがステータスロット内部に浸透するまで保持する。その後、（Ｃ）の通りステータ本体を、バスバー側が多少上側になるよう、ステータ本体を約１０度から４０度傾け、ワニスを符号１２のワニス塗布ノズルを使用し、モータコイル及びバスバー及び渡り線に満遍なくワニスが塗布できるよう、多少の揺動を加えながらワニスを塗布する。この時、バスバーと渡り線の接続部周囲がワニスで覆われる程度に、符号１及び符号２のワニス漏れ防止カバーの折り返し部分と接続部分にワニスだまりを形成させる。このワニスだまり及びモータコイルに適量のワニスを塗布したのち、（Ｄ）の通り、ステータ本体を水平状態にして、ワニスがステータスロット内部に浸透するまで保持する。 Since the stator body of the concentrated winding type electric machine of this time has no coil end, varnish cannot be applied in a horizontal state. Therefore, first, as shown in (A), the stator main body is inclined by about 10 to 40 degrees, and the surface on the side opposite to the bus bar is inclined slightly upward. In this state, the varnish is applied using a varnish application nozzle denoted by reference numeral 11 while applying a slight swing to the coil end side of the motor coil section. After the application of the predetermined amount of varnish is completed, the stator body is once leveled and held until the varnish penetrates into the status lot. After that, as shown in (C), the stator body is tilted from about 10 degrees to 40 degrees so that the bus bar side is slightly above, and the varnish is applied to the motor coil, bus bar and connecting wire using the varnish application nozzle of reference number 12. Apply the varnish while applying some rocking so that the varnish can be applied evenly. At this time, a varnish pool is formed in the folded portion and the connection portion of the varnish leakage prevention cover of reference numerals 1 and 2 to the extent that the periphery of the connection portion between the bus bar and the crossover is covered with the varnish. After an appropriate amount of varnish is applied to the varnish pool and the motor coil, as shown in (D), the stator body is placed in a horizontal state and held until the varnish penetrates into the status lot.
図３は、電磁誘導加熱のための電磁誘導コイルの配置を解説した図である。 FIG. 3 is a diagram illustrating the arrangement of electromagnetic induction coils for electromagnetic induction heating.
この電磁誘導加熱のユニットは、予備加熱及びワニス塗布後のワニス硬化温度までの昇温、さらに生産物量に応じて、ワニス硬化温度保持の為に使用される。 This electromagnetic induction heating unit is used for preheating, raising the temperature to the varnish curing temperature after varnish application, and maintaining the varnish curing temperature according to the amount of product.
まず、（Ｂ）に示すとおり、符号３のモータステータの外周側に、近接して符号１３の電磁誘導加熱用の電磁誘導コイルを符号３のモータステータに一方向に巻きまわす。この際、モータステータの符号１５の積み厚幅に対し、符号５のバスバー側方向に符号１３の電磁誘導加熱用の電磁誘導コイルを、符号３のモータステータの積み厚幅符号１５よりさらに、符号１６電磁誘導加熱用の電磁誘導コイルのように、モータステータ積み厚幅の１／３から半分程度電磁誘導コイルの巻き幅を増やし、符号１５と符号１６の巻き幅の合計で持って、電磁誘導加熱用誘導コイルを構成する。 First, as shown in (B), an electromagnetic induction coil for electromagnetic induction heating of reference numeral 13 is wound around the motor stator of reference numeral 3 in one direction in proximity to the outer peripheral side of the motor stator of reference numeral 3. At this time, the electromagnetic induction coil for electromagnetic induction heating indicated by reference numeral 13 in the direction of the bus bar indicated by reference numeral 5 is connected to the stacked thickness width indicated by reference numeral 15 of the motor stator. Like the electromagnetic induction coil for 16 electromagnetic induction heating, the winding width of the electromagnetic induction coil is increased by about 1/3 to half of the stacking width of the motor stator, and the total of the winding widths of reference numerals 15 and 16 is obtained. A heating induction coil is configured.
さらに（Ｃ）は、（Ｂ）の電磁誘導加熱用誘導コイルを、符号１５と符号１６の巻き幅を持って、一方向に電磁誘導加熱用誘導コイルを、巻きまわしている状態図を示したものである。 Further, (C) shows a state diagram in which the induction coil for electromagnetic induction heating of (B) is wound around the induction coil for electromagnetic induction heating in one direction with the winding widths of 15 and 16. Is.
また、（Ａ）は、符号８、９の、モータステータチャック機構の軸方向に、符号１４のカバーを、バスバー側、反バスバー側両者に設置し、加熱時の熱が放熱しづらい用、加熱時にモータステータを密閉する為のカバーである。なお、このカバーは、ステータモータのセットや取り出し時には、横方向に移動し、取り出しでき、加熱時に発生するワニスの有害な蒸気を、一時的に吸引する為、横スライドできる構造になっている。 (A) is the case where the cover of reference numeral 8 and 9 is installed in both the bus bar side and the non-bus bar side in the axial direction of the motor stator chuck mechanism, and the heat during heating is difficult to dissipate. Sometimes a cover for sealing the motor stator. The cover can be moved and removed laterally when the stator motor is set or taken out, and has a structure that can be slid sideways to temporarily suck harmful vapors of varnish generated during heating.
なお、図には無いが、労働安全衛生法や消防法の観点から、各装置の要素部分には、ワニスの蒸気などを外部に排出できる排気ファンを有している。 Although not shown in the drawings, from the viewpoint of the Industrial Safety and Health Act and the Fire Service Act, each component of each device has an exhaust fan that can discharge varnish vapor to the outside.
図４は、予備加熱からワニス塗布、さらにワニス硬化温度までの昇温の加熱温度プロファイルを示した図である。 FIG. 4 is a view showing a heating temperature profile for temperature increase from preheating to varnish application and further to the varnish curing temperature.
Ｔ１７は、図３のステータ中央表面温度、Ｔ１８は、図３でも示す、スロット内部中央部の温度、Ｔ２０は図３のバスバー側ステータ端部の温度、Ｔ２１は図３のバスバー端部の温度、Ｔ１９は図３のコイルエンド部の温度を示す。電磁誘導加熱方式で加熱した場合、図４のように、唯一鉄系の部材で構成されているモータステータに電磁誘導コイルによる熱が先ず初めに発生する。この熱が、モータステータの部材を経由して、距離的に近いスロット内部側に先ず伝達され、その熱が徐々に銅などで構成されていて、電磁誘導が発生しないコイルエンドなどに熱伝達されていく。 T17 is the stator center surface temperature in FIG. 3, T18 is the temperature in the center of the slot, which is also shown in FIG. 3, T20 is the temperature at the end of the stator on the bus bar side in FIG. 3, T21 is the temperature at the end of the bus bar in FIG. T19 shows the temperature of the coil end part of FIG. When heating by the electromagnetic induction heating method, as shown in FIG. 4, first, heat from the electromagnetic induction coil is generated in the motor stator that is composed of only an iron-based member. This heat is first transmitted to the inside of the slot close to the distance via a member of the motor stator, and the heat is gradually transferred to a coil end or the like that is made of copper and does not generate electromagnetic induction. To go.
今回の、電磁誘導加熱方式は、バスバー側に電磁誘導加熱用の電磁誘導コイルが、偏って巻きまわされているため、Ｔ１７のステータ中央表面温度及びＴ２０のバスバー側ステータ端部の温度が、最初に急激に加熱される。このことにより、最後に熱伝達されるＴ１９のコイルエンドの温度およびＴ２１のバスバー端部の温度が、ほぼ同じくらいのタイミングで、ワニスの硬化に必要な温度に加熱できる。また、昇温Ｓ５時は電磁誘導加熱の出力を出来るだけ小さくコントロールしながら、Ｔ２０のバスバー側ステータ端部の温度およびＴ１８スロット内部中央の温度、さらにＴ１７のステータ中央部の温度が、モータに使用されている絶縁材の耐熱温度Ｔｉを超えない程度に加熱をしつつ、Ｔ１９コイルエンド部の温度及び、Ｔ２１バスバー端部の温度が、ワニスの硬化温度Ｔｗまで加熱されるようコントロールする。 In this electromagnetic induction heating method, the electromagnetic induction coil for electromagnetic induction heating is biased around the bus bar side, so that the stator center surface temperature at T17 and the temperature at the end of the bus bar side stator at T20 are the first. Suddenly heated. As a result, the temperature of the coil end of T19 and the temperature of the end of the bus bar of T21 to which heat is finally transferred can be heated to a temperature necessary for curing the varnish at substantially the same timing. In addition, at the temperature rise S5, the temperature of the stator end of the T20 bus bar, the temperature inside the T18 slot, and the temperature at the center of the stator at T17 are used for the motor while controlling the output of electromagnetic induction heating as small as possible. While heating to the extent that the heat resistance temperature Ti of the insulating material is not exceeded, the temperature of the T19 coil end and the temperature of the T21 busbar end are controlled to be heated to the varnish curing temperature Tw.
この際、それぞれ、Ｔ１９コイルエンド部やＴ２１バスバー端部までに熱が伝達される間に、熱損失が発生し、結果的に、Ｔ１９コイルエンド部の温度よりＴ１８スロット内部中央の温度、さらに、Ｔ２１バスバー端部の温度よりＴ２０バスバー側ステータ端部の温度の方が若干高くなる。 At this time, a heat loss occurs while heat is transmitted to the T19 coil end portion and the T21 bus bar end portion, respectively. As a result, the temperature inside the T18 slot inside the T19 coil end portion, The temperature at the T20 bus bar side stator end is slightly higher than the temperature at the T21 bus bar end.
上記に示したとおりモータステータのスロット内部中央部や、バスバー側ステータ底面の方が高温になるが、一般的に、ワニスなどの樹脂は、温度と粘度が反比例的な関係にあるので、この性質を上手く利用し、高温に成ることでワニスの粘度が下がる現象が発生し、よってワニスが毛細管現象で、内部奥まで浸透することが出来る。 As shown above, the central portion of the slot inside the motor stator and the bottom surface of the bus bar side stator are hotter. Generally, resins such as varnish have an inversely proportional relationship between temperature and viscosity. Can be used effectively, and when the temperature becomes high, the viscosity of the varnish decreases, so that the varnish can penetrate into the interior by capillary action.
結果的に、ワニスの高密度充填が可能になる。 As a result, high density filling of the varnish becomes possible.
なお、ワニスがそれぞれのワニスに既定された硬化開始温度まで、必要部分の温度が昇温された状態では、ワニスは既に硬化反応を始めている為、ゲル化状態となり、ワニス漏れが、ほとんど発生しない状態になる。 In addition, in the state where the temperature of the necessary part has been raised to the curing start temperature specified for each varnish, since the varnish has already started the curing reaction, it becomes a gelled state, and varnish leakage hardly occurs It becomes a state.
このため、硬化開始温度まで昇温された状態での、ワニスの硬化促進の為の温度保持は、このまま電磁誘導加熱方式を用いても良いし、熱風乾燥炉や、他の加熱方式でも最終的なワニス硬化完成品が確保できる。 For this reason, the electromagnetic induction heating method may be used as it is for maintaining the temperature for varnish hardening in the state where the temperature has been raised to the curing start temperature, or it may be finally used in a hot air drying furnace or other heating method. A finished varnish cured product can be secured.
１…ワニス漏れ防止カバー
２…ワニス漏れ防止カバー
３…モータステータ
４…バスバーケース
５…バスバー
６…バスバーの渡り線
７…モータコイル
８…モータステータチャック機構
９…モータステータチャック機構
１０…電力入力端子
１１…ワニス塗布ノズル
１２…ワニス塗布ノズル
１３…電磁誘導加熱用の誘導コイル
１４…カバー
１５…モータステータの積み厚幅
１６…電磁誘導加熱用の誘導コイル
Ｔ１７…ステータ中央表面温度
Ｔ１８…スロット内部中央部の温度
Ｔ１９…コイルエンドの温度
Ｔ２０…バスバー側ステータ端部の温度
Ｔ２１…バスバー端部の温度
DESCRIPTION OF SYMBOLS 1 ... Varnish leak prevention cover 2 ... Varnish leak prevention cover 3 ... Motor stator 4 ... Bus bar case 5 ... Bus bar 6 ... Bus bar crossover 7 ... Motor coil 8 ... Motor stator chuck mechanism 9 ... Motor stator chuck mechanism 10 ... Electric power input terminal DESCRIPTION OF SYMBOLS 11 ... Varnish application nozzle 12 ... Varnish application nozzle 13 ... Induction coil for electromagnetic induction heating 14 ... Cover 15 ... Thickness width of motor stator 16 ... Induction coil for electromagnetic induction heating T17 ... Stator center surface temperature T18 ... Center inside slot T19 ... Temperature of coil end T20 ... Temperature of bus bar side stator end T21 ... Temperature of bus bar end
Claims (12)
電磁誘導加熱部分が前記固定子の外周全体を覆い、バスバー側に巻き幅をオーバーラップさせた電磁誘導加熱用誘導コイルを備え、
前記電磁誘導加熱部分においてコイルに流れる電磁誘導加熱電流が一方向になるように前記電磁誘導加熱コイルを巻回配置し、
前記電磁誘導加熱コイルに電磁誘導加熱電流を供給すると共に、当該固定子を回転させながら加熱することを特徴とする固定子の加熱方法。 A stator heating method for curing a varnish applied in the vicinity of a coil wound around the stator by electromagnetic induction heating the stator of a concentrated winding electric machine,
An electromagnetic induction heating part covers the entire outer periphery of the stator, and includes an induction coil for electromagnetic induction heating that overlaps the winding width on the bus bar side,
The electromagnetic induction heating coil is wound and arranged so that the electromagnetic induction heating current flowing in the coil in the electromagnetic induction heating portion is in one direction,
A method for heating a stator, wherein an electromagnetic induction heating current is supplied to the electromagnetic induction heating coil, and the stator is heated while rotating.
１種類の前記ワニスでモータコイル及びバスバー、その渡り線部を一体硬化させることを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 1,
A method for heating a stator, wherein a motor coil, a bus bar, and a connecting wire portion thereof are integrally cured with one kind of the varnish.
前記ワニスの塗布時は、電動機械の回転中心を水平回転軸に対して約１０度から４０度傾けることを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 1,
The stator heating method, wherein the varnish is applied by tilting the rotation center of the electric machine about 10 to 40 degrees with respect to the horizontal rotation axis.
固定子の外周にワニス漏れ防止カバーを取り付け、
前記ワニス漏れ防止カバーの前記バスバー側に折り返しをつけたことを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 3,
Attach the varnish leakage prevention cover to the outer periphery of the stator,
A method for heating a stator, wherein the varnish leakage prevention cover is folded on the bus bar side.
前記電磁誘導加熱コイルの端部に保温のためのカバーを取り付けたことを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 1,
A stator heating method, wherein a cover for heat insulation is attached to an end of the electromagnetic induction heating coil.
前記固定子の回転軸として固定子のチャック機構を設け、
前記ワニスの塗布時、水平状態でも前記固定子を常時回転させることを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 1,
A stator chuck mechanism is provided as a rotating shaft of the stator,
The method of heating a stator, wherein the stator is always rotated even in a horizontal state when the varnish is applied.
前記ワニスの塗布時、前記固定子を傾けた状態で、反バスバー側では、モータコイル部分、バスバー側では、モータコイルおよびバスバー、その渡り線部にワニスを塗布するワニス塗布ノズルが、塗布する範囲を揺動しながらワニスを滴下する機構を備えたことを特徴とする固定子の加熱方法。 The method of heating a stator according to claim 1,
When the varnish is applied, the stator is tilted, the motor coil portion on the side opposite to the bus bar, the motor coil and bus bar on the bus bar side, and the varnish application nozzle that applies the varnish to the connecting wire portion is applied. A stator heating method comprising a mechanism for dropping the varnish while swinging the shaft.
電磁誘導加熱部分が当該固定子の積み厚の外周全体及びバスバー側にオーバーラップして近接して覆い、当該電磁誘導加熱部分においてコイルに流れる電磁誘導加熱電流が一方向になるように電磁誘導加熱コイルを巻回配置し、
前記温度プロファイルにワニス塗布後のワニス半硬化工程を含み、予熱、昇温、温度保持において、当該電磁誘導加熱コイルに電磁誘導加熱電流を供給すると共に、当該固定子を回転させながら加熱することを特徴とする固定子の加熱方法。 Fix the varnish applied near the motor coil wound around the stator of a concentrated winding electric machine to cure the stator by a temperature profile consisting of preheating, cooling, varnish application, temperature rise, and temperature holding. A stator heating method for heating a child,
The electromagnetic induction heating part overlaps the entire outer circumference of the stator stack and the bus bar side and covers the electromagnetic induction heating part so that the electromagnetic induction heating current flowing in the coil is unidirectional in the electromagnetic induction heating part. The coil is wound around,
The temperature profile includes a varnish semi-curing step after varnish application, and in preheating, temperature rising, and temperature holding, supplying electromagnetic induction heating current to the electromagnetic induction heating coil and heating the stator while rotating A stator heating method characterized by the above.
固定子からワニスが漏れ落ちるのを防止するワニスカバーを取り付けた状態で、前記固定子を傾斜させかつ、回転しながらワニスを塗布し、ワニス塗布後もワニスが半硬化するまで回転を維持することを特徴とする電磁誘導加熱による固定子の加熱方法。 The method of heating a stator according to claim 8,
With the varnish cover attached to prevent the varnish from leaking from the stator, tilt the stator and apply the varnish while rotating, and maintain rotation until the varnish is semi-cured even after varnish application A method of heating a stator by electromagnetic induction heating.
固定子を回転させながら保持する固定子のチャック機構と、
前記固定子のチャック機構により保持された前記固定子の両端に配置される一対の保温のためのカバーと、
前記固定子チャック冶具により保持された前記固定子の外周全体を覆い、固定子の積み厚の厚みおよび、バスバー側にさらにオーバーラップさせて巻き幅を有した、当該誘導加熱部分においてコイルに流れる誘導加熱電流が一方向になるように当該固定子の全周に巻回された電磁誘導加熱コイルとを備え、
当該電磁誘導加熱コイルに電磁誘導加熱電流を供給することにより固定子を加熱することを特徴とする固定子の加熱装置。 A stator heating device that cures the varnish adhering to the vicinity of the coil wound around the stator by electromagnetic induction heating of the stator of the electric machine,
A stator chuck mechanism for holding the stator while rotating;
A pair of heat retaining covers disposed at both ends of the stator held by the stator chuck mechanism;
An induction that covers the entire outer periphery of the stator held by the stator chuck jig, and has a stacking thickness of the stator and a winding width that further overlaps with the bus bar side, and flows through the coil in the induction heating portion. An electromagnetic induction heating coil wound around the entire circumference of the stator so that the heating current is in one direction,
A stator heating apparatus, wherein a stator is heated by supplying an electromagnetic induction heating current to the electromagnetic induction heating coil.
電磁誘導コイルの端部にも、保温のためのカバーを設けたことを特徴とする固定子の加熱装置。 The stator heating device according to claim 10,
A stator heating device, characterized in that a cover for heat insulation is also provided at an end of the electromagnetic induction coil.
前記電磁誘導コイルの端部に設けられた保温のためのカバーの少なくとも一方が、チャック機構により保持された前記固定子に対して移動可能になっていることを特徴とする固定子の加熱装置。 The stator heating device according to claim 11,
The stator heating device, wherein at least one of the heat retaining covers provided at the end of the electromagnetic induction coil is movable with respect to the stator held by a chuck mechanism.
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| JP2017200356A (en) * | 2016-04-28 | 2017-11-02 | トヨタ自動車株式会社 | Method of manufacturing stator using varnish dripping |
| JP2020129852A (en) * | 2019-02-07 | 2020-08-27 | 日立オートモティブシステムズ株式会社 | Manufacturing method of stator, manufacturing method of rotary electric machine, and rotary electric machine |
| JPWO2020162088A1 (en) * | 2019-02-07 | 2021-09-30 | 日立Astemo株式会社 | Stator manufacturing method and stator core |
| CN116683713A (en) * | 2023-06-09 | 2023-09-01 | 跃科智能制造(无锡)有限公司 | Electric heating paint dripping mechanism for stator copper wire |
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| JP2017200356A (en) * | 2016-04-28 | 2017-11-02 | トヨタ自動車株式会社 | Method of manufacturing stator using varnish dripping |
| JP2020129852A (en) * | 2019-02-07 | 2020-08-27 | 日立オートモティブシステムズ株式会社 | Manufacturing method of stator, manufacturing method of rotary electric machine, and rotary electric machine |
| JPWO2020162088A1 (en) * | 2019-02-07 | 2021-09-30 | 日立Astemo株式会社 | Stator manufacturing method and stator core |
| JP7133494B2 (en) | 2019-02-07 | 2022-09-08 | 日立Astemo株式会社 | Stator Manufacturing Method, Rotating Electric Machine Manufacturing Method, and Rotating Electric Machine |
| JP7163421B2 (en) | 2019-02-07 | 2022-10-31 | 日立Astemo株式会社 | Stator manufacturing method and stator core |
| US11843292B2 (en) | 2019-02-07 | 2023-12-12 | Hitachi Astemo, Ltd. | Method for manufacturing stator |
| CN116683713A (en) * | 2023-06-09 | 2023-09-01 | 跃科智能制造(无锡)有限公司 | Electric heating paint dripping mechanism for stator copper wire |
| CN116683713B (en) * | 2023-06-09 | 2024-01-02 | 跃科智能制造(无锡)有限公司 | Electric heating paint dripping mechanism for stator copper wire |
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