JP2005229747A

JP2005229747A - Rotating electric machine and winding thereof

Info

Publication number: JP2005229747A
Application number: JP2004036794A
Authority: JP
Inventors: Yoshio Hashidate; 良夫橋立; Yasuo Kahata; 安雄加幡; Yoshihiro Taniyama; 賀浩谷山; Hideyuki Nakamura; 英之中村
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2004-02-13
Filing date: 2004-02-13
Publication date: 2005-08-25

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding of rotating electric machine that is excellent in the workability of housing coils in slots, low in thermal resistance between the coil and a core, and allows the coils to be favorably cooled; and to provide a rotating electric machine. <P>SOLUTION: The winding of rotating electric machine is formed by housing coils 2a and 2b obtained by forming an insulating layer 1b around a coil conductor 1a, into slots 3a formed in the core 3 of a rotary electric machine, with slot liners 12a in-between. The slot liners 12a are obtained by forming an application film 12 of thermally conductive material having curable property on either side of a sheet-like semiconductive base material 11. The winding is so constituted that the application film 12 of a thermally conductive material covers the coils 2a and 2b in contact with the coils and the semiconductive base material 11 is in contact with the coils 2a and 2b only in specific areas. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、タービン発電機の固定子コイル等の回転電機の巻線および回転電機に係り、鉄心スロット内におけるコイルの固定のための構成を改良した回転電機の巻線および回転電機に関する。 The present invention relates to a rotating electric machine and a rotating electric machine such as a stator coil of a turbine generator, and more particularly to a rotating electric machine winding and an electric rotating machine having an improved configuration for fixing a coil in an iron core slot.

図１７は従来の技術による固定子コイルの固定子鉄心スロット収納状態を示す断面図である。なお、以下の説明では便宜上、固定子コイルは単にコイルと、固定子鉄心は単に鉄心と呼称する。 FIG. 17 is a cross-sectional view showing a state in which the stator core slot of the stator coil according to the prior art is housed. In the following description, for convenience, the stator coil is simply called a coil, and the stator core is simply called an iron core.

図１７において、２ａおよび２ｂは鉄心３のスロット３ａに収納されている上コイルと下コイルであり、それぞれコイル導体１ａを絶縁層１ｂで覆い、対大地絶縁を保持するようにしている。そして、図示されていないが、絶縁層１ｂの表面には半導電性のコロナ放電防止層が形成されている。 In FIG. 17, 2a and 2b are an upper coil and a lower coil housed in the slot 3a of the iron core 3, and the coil conductor 1a is covered with an insulating layer 1b, respectively, so as to maintain ground insulation. Although not shown, a semiconductive corona discharge preventing layer is formed on the surface of the insulating layer 1b.

この上コイル２ａ、下コイル２ｂをスロット３ａに収納する際（固定子を組立てる際）、スロット底部に底部スペーサ４を配置し、上コイルと下コイルの間にコイル間スペーサ５を配置し、更にスロット３ａの開口部側に楔下スペーサ６を配置した状態で楔７を楔溝に挿入することによって、コイルをスロット高さ方向の所定状態に固定している。 When storing the upper coil 2a and the lower coil 2b in the slot 3a (when assembling the stator), the bottom spacer 4 is arranged at the bottom of the slot, the inter-coil spacer 5 is arranged between the upper coil and the lower coil, and The coil is fixed in a predetermined state in the slot height direction by inserting the wedge 7 into the wedge groove with the wedge lower spacer 6 disposed on the opening side of the slot 3a.

また、スロット幅方向の固定は、片側のスロット内壁とコイルとの間にサイドリップルスプリングと呼ばれる波板状のバネ板８を挿入することにより、上コイル２ａ、下コイル２ｂをスロット３ａ内壁面に押し付け固定するようになっている。 The slot width direction is fixed by inserting a corrugated spring plate 8 called a side ripple spring between the slot inner wall and the coil on one side so that the upper coil 2a and the lower coil 2b are attached to the inner wall surface of the slot 3a. It is designed to be pressed and fixed.

このように上コイル２ａ、下コイル２ｂをスロット３ａに収納した状態において、その表面に形成したコロナ放電防止層をスロット内壁面に接触させることによって、絶縁層１ｂ表面の電位を鉄心３の電位、即ち大地電位と同じにし、これにより上コイル２ａおよび下コイル２ｂの表面とスロット３ａ壁面との間で放電が発生することを防止している（下記特許文献１参照）。
特開２００１−６９７０９号公報 Thus, in the state where the upper coil 2a and the lower coil 2b are housed in the slot 3a, the potential of the surface of the insulating layer 1b is changed to the potential of the iron core 3 by bringing the corona discharge prevention layer formed on the surface into contact with the inner wall surface of the slot. That is, it is the same as the ground potential, thereby preventing discharge from occurring between the surfaces of the upper coil 2a and the lower coil 2b and the wall surface of the slot 3a (see Patent Document 1 below).
JP 2001-69709 A

上記の構成ではバネ板８の形状が波板状になっているので、バネ板８の周辺に隙間ができてしまい、ここに熱伝達率の小さい冷媒ガス層が介在し、バネ板８と接する上コイル２ａおよび下コイル２ｂの側面と鉄心３間の熱移動を妨げる。また、組立作業性の点でも、波板状のバネ板８を圧縮しながらコイル側面とスロット内壁面の間に挿入するのに手間がかかる。 In the above configuration, since the shape of the spring plate 8 is corrugated, a gap is formed around the spring plate 8, and a refrigerant gas layer having a small heat transfer coefficient is interposed between the spring plate 8 and the spring plate 8. Heat transfer between the side surfaces of the upper coil 2a and the lower coil 2b and the iron core 3 is prevented. Also, in terms of assembly workability, it takes time and effort to insert the corrugated spring plate 8 between the coil side surface and the slot inner wall surface while compressing.

本発明は上記の事情を考慮してなされたもので、スロットへのコイルの収納作業性がよく、コイルと鉄心間の熱抵抗が低く、コイルの冷却性のよい回転電機の巻線および回転電機を提供することを目的とする。 The present invention has been made in consideration of the above-described circumstances, and has excellent workability for storing a coil in a slot, low thermal resistance between the coil and the iron core, and good coil cooling performance. The purpose is to provide.

上記目的を達成するため、請求項１の発明の回転電機の巻線は、コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーはシート状の半導電性基材の片面に硬化性を有する熱伝導性物質の塗布膜を形成してなり、前記熱伝導性物質の塗布膜が前記コイルに接するように前記コイルを覆い、前記半導電性基材は特定の部位のみにおいて前記コイルに接している構成とする。 In order to achieve the above object, the winding of the rotating electrical machine according to the first aspect of the present invention has a coil formed by forming an insulating layer around the coil conductor in a slot formed in the iron core of the rotating electrical machine with a slot liner interposed. In the winding of the rotating electrical machine that is housed, the slot liner is formed by forming a coating film of a thermally conductive material having curability on one surface of a sheet-like semiconductive substrate, and applying the thermally conductive material The coil is covered so that the film is in contact with the coil, and the semiconductive substrate is in contact with the coil only at a specific portion.

請求項２の発明は、前記特定の部位は、前記半導電性基材上の塗布膜無し部によって前記コイルの上面または底面に設けられている構成とする。
請求項３の発明は、前記特定の部位は、前記半導電性基材のスロット幅方向端部を前記塗布膜側に向けて折り返して形成された折返し部によって前記コイルの側面に設けられている構成とする。 According to a second aspect of the present invention, the specific portion is provided on the upper surface or the bottom surface of the coil by a coating film-less portion on the semiconductive substrate.
According to a third aspect of the present invention, the specific portion is provided on a side surface of the coil by a folded portion formed by folding the end portion in the slot width direction of the semiconductive substrate toward the coating film side. The configuration.

請求項４の発明は、前記特定の部位は、前記スロットの壁と前記スロットライナーの間に設けられ前記塗布膜を排除して前記半導電性基材を前記コイルに接触させるスペーサによって形成されている構成とする。 According to a fourth aspect of the present invention, the specific portion is formed by a spacer that is provided between the slot wall and the slot liner and that excludes the coating film and makes the semiconductive substrate contact the coil. The configuration is as follows.

請求項５の発明は、コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーは、シート状の半導電性基材の片面に硬化性を有する熱伝導性物質を塗布し前記半導電性基材を外側にして二つ折りにしたシート状材料をＵ字形に形成してなる構成とする。 According to a fifth aspect of the present invention, there is provided a winding for a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine with a slot liner interposed therebetween. The liner is formed by applying a curable thermally conductive material on one side of a sheet-like semiconductive substrate and forming a U-shaped sheet material that is folded in half with the semiconductive substrate outside. The configuration.

請求項６の発明は、コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーは、袋状の半導電性基材内に前記コイルを入れ、前記スロットに挿入した後、前記半導電性基材と前記コイルの間に硬化性を有する熱伝導性物質を充填して形成されている構成とする。 According to a sixth aspect of the present invention, there is provided a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine with a slot liner interposed therebetween. The liner is formed by placing the coil in a bag-like semiconductive substrate, inserting the coil into the slot, and then filling a curable thermally conductive material between the semiconductive substrate and the coil. The configuration is as follows.

請求項７の発明は、前記コイルは上コイルと下コイルからなり、前記スロットライナーは前記上コイルと前記下コイルを纏めて包囲している構成とする。
請求項８の発明は、コイル導体の周囲に絶縁層を形成してなるコイルを回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記コイルの少なくとも片側の側面に硬化性を有する熱伝導性物質の塗布膜を形成し、前記塗布膜と前記スロットの壁が直接接触するように前記コイルを前記スロットに挿入した構成とする。 According to a seventh aspect of the invention, the coil includes an upper coil and a lower coil, and the slot liner collectively surrounds the upper coil and the lower coil.
According to an eighth aspect of the present invention, in a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in the iron core of the rotating electrical machine, the coil is provided on at least one side surface of the coil. A coating film of a thermally conductive material having a curing property is formed, and the coil is inserted into the slot so that the coating film and the wall of the slot are in direct contact.

請求項９の発明は、コイル導体の周囲に絶縁層を形成してなるコイルを回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットの少なくとも片側の壁面に硬化性を有する熱伝導性物質の塗布膜を形成し、前記コイルが前記塗布膜に直接接触するように前記コイルを前記スロットに挿入した構成とする。 According to a ninth aspect of the present invention, in a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine, the wall is provided on at least one side wall of the slot. A coating film of a thermally conductive material having curability is formed, and the coil is inserted into the slot so that the coil is in direct contact with the coating film.

請求項１０の発明は、コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットと前記コイルとの隙間に硬化性を有する半導電性の熱伝導性物質を充填して前記コイルを固定した構成とする。 A tenth aspect of the present invention is directed to a rotating electrical machine winding in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of a rotating electrical machine with a slot liner interposed therebetween. The coil is fixed by filling a gap between the coil and the coil with a semiconductive heat conductive material having curing properties.

請求項１１の発明は、前記熱伝導性物質内に、前記熱伝導性物質の熱伝導率より大きい熱伝導率の物質を混合した構成とする。
請求項１２の発明は、前記熱伝導性物質内に、前記熱伝導性物質の線膨張係数より大きい線膨張係数の物質を混合させた構成とする。 According to an eleventh aspect of the present invention, a substance having a thermal conductivity larger than that of the thermal conductive substance is mixed in the thermal conductive substance.
According to a twelfth aspect of the present invention, a material having a linear expansion coefficient larger than that of the thermally conductive material is mixed in the thermally conductive material.

請求項１３の発明は、前記熱伝導性物質を回転電機の冷媒ガスよりも熱伝導率の大きい雰囲気ガス中で形成した構成とする。
請求項１４の発明は回転電機であり、請求項１ないし請求項１３のいずれかに記載の回転電機の巻線を備えている構成とする。 According to a thirteenth aspect of the present invention, the thermal conductive material is formed in an atmospheric gas having a higher thermal conductivity than the refrigerant gas of the rotating electrical machine.
A fourteenth aspect of the present invention is a rotating electric machine, and includes the winding of the rotating electric machine according to any one of the first to thirteenth aspects.

本発明によれば、スロットへのコイルの収納作業性がよく、コイルと鉄心間の熱抵抗が低く、コイルの冷却性のよい回転電機の巻線および回転電機を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the coil | winding of a rotary electric machine and rotary electric machine with which the workability | operativity of the coil to a slot is good, the thermal resistance between a coil and an iron core is low, and the coil cooling property is good can be provided.

以下、本発明の第１乃至第１１の実施の形態を説明する。なお、上述した従来技術と同じ構成部分については、図面において同一の符号を付して説明を省略し、主にコイル収納のための構成について説明する。 Hereinafter, first to eleventh embodiments of the present invention will be described. In addition, about the same component as the prior art mentioned above, the same code | symbol is attached | subjected in drawing and description is abbreviate | omitted and the structure for coil accommodation is mainly demonstrated.

（第１の実施の形態）
図１は本発明の第１の実施の形態に係る回転電機の巻線を示す断面図である。本実施の形態では次のようにして鉄心３のスロット３ａに上コイル２ａと下コイル２ｂが収納される。 (First embodiment)
FIG. 1 is a cross-sectional view showing a winding of a rotating electrical machine according to a first embodiment of the present invention. In the present embodiment, the upper coil 2a and the lower coil 2b are accommodated in the slot 3a of the iron core 3 as follows.

まず、図２に示すように、シート状の半導電性基材１１の、コイル側面と接触する領域９とコイル底面と接触する領域１０に熱もしくは経時変化による硬化性を有する熱伝導性物質（例えば、シリコーンゴム）を塗布して熱伝導性塗布膜１２を形成する。塗布膜１２の厚さは、スロット幅とコイル幅の隙間に応じた厚さとする。シート状半導電性基材１１のスロット幅方向の端部には、コイル上面でシート状半導電性基材１１とコイル絶縁層１ｂが直接接触するように、熱伝導物質を塗布しない領域１３ａを設けてある。 First, as shown in FIG. 2, in the sheet-like semiconductive base material 11, the heat conductive material (which is hardened by heat or change with time) is formed in the region 9 in contact with the coil side surface and the region 10 in contact with the coil bottom surface. For example, silicone rubber) is applied to form the heat conductive coating film 12. The thickness of the coating film 12 is determined according to the gap between the slot width and the coil width. At the end of the sheet-like semiconductive substrate 11 in the slot width direction, there is a region 13a where no heat conductive material is applied so that the sheet-like semiconductive substrate 11 and the coil insulating layer 1b are in direct contact with each other on the upper surface of the coil. It is provided.

つぎに、上記のように半導電性基材１１と熱伝導性塗布膜１２で構成したシート状スロットライナー１２ａによって、図１に示したようにシート状半導電性基材１１の熱伝導性塗布膜がコイル２ａ，２ｂと接触するようにコイル２ａ，２ｂをＵ字形に覆い、これをスロット３ａ内に挿入する。スロット３ａ内にコイル底スペーサ４、下コイル２ｂ、コイル間スペーサ５、上コイル２ａ、楔下スペーサ６の順に挿入し、楔７により所定位置に固定して本実施の形態の回転電機の巻線が得られる。 Next, as shown in FIG. 1, the heat conductive coating of the sheet-like semiconductive substrate 11 is performed by the sheet-like slot liner 12a constituted by the semiconductive substrate 11 and the heat conductive coating film 12 as described above. The coils 2a and 2b are covered in a U shape so that the membrane contacts the coils 2a and 2b, and this is inserted into the slot 3a. The coil bottom spacer 4, the lower coil 2 b, the inter-coil spacer 5, the upper coil 2 a, and the wedge lower spacer 6 are inserted in this order into the slot 3 a, and fixed at a predetermined position by the wedge 7. Is obtained.

本実施の形態によれば、スロット３ａの内壁面は鉄心３の積層構造のため、また、コイル２ａ，２ｂは絶縁層１ｂを形成してあるため、その表面は凹凸があるが、本実施の形態によれば、スロット内壁面やコイルの表面形状に応じて熱伝導性塗布膜１２の熱伝導物質が変形し硬化する。そのため、コイルとスロット内壁面の間に熱伝達率の小さいガス層がほとんど存在しなくなる。これにより、コイル２ａ，２ｂと鉄心３間の熱抵抗が小さくなり、コイル２ａ，２ｂの冷却性能が向上する。 According to the present embodiment, the inner wall surface of the slot 3a is a laminated structure of the iron core 3, and the coils 2a and 2b are formed with the insulating layer 1b. According to the form, the heat conductive material of the heat conductive coating film 12 is deformed and hardened according to the inner wall surface of the slot and the surface shape of the coil. Therefore, there is almost no gas layer having a small heat transfer coefficient between the coil and the inner wall surface of the slot. Thereby, the thermal resistance between coil 2a, 2b and the iron core 3 becomes small, and the cooling performance of coil 2a, 2b improves.

本実施の形態によれば、波板状のバネ板を圧縮しながらコイル側面とスロット内壁面の間に挿入する必要もなくなるため、コイルの組立作業が容易になる。また、シート状半導電性基材１１は鉄心スロット３ａの壁面に接触しており、上コイル２ａ、下コイル２ｂは、コイル上面でシート状半導電性基材１１を介して、鉄心スロット３ａの壁面と電気的な導通を保つため、コイル２ａ，２ｂの表面と鉄心のスロット壁面との間で放電が発生することはない。 According to the present embodiment, it is not necessary to insert the corrugated spring plate between the side surface of the coil and the inner wall surface of the slot while compressing the corrugated spring plate. Further, the sheet-like semiconductive base material 11 is in contact with the wall surface of the iron core slot 3a, and the upper coil 2a and the lower coil 2b are disposed on the upper surface of the iron core slot 3a via the sheet-like semiconductive base material 11. In order to maintain electrical continuity with the wall surface, no discharge occurs between the surfaces of the coils 2a and 2b and the slot wall surface of the iron core.

（第２の実施の形態）
図３は第２の実施の形態の回転電機の巻線を示す図である。第１の実施の形態と異なるところは、図４に示すように、シート状の半導電性基材１１の、コイル２ａ，２ｂの側面と接触する領域９にのみ、硬化性を有する熱伝導性物質（例えば、シリコーンゴム）による熱伝導性塗布膜１２を形成し、コイル２ａ，２ｂの底面と接触する領域１０には塗布しないようにし、熱伝導性塗布膜１２が無い領域１３ｂを設けてシート状スロットライナー１２ａを構成したことである。 (Second Embodiment)
FIG. 3 is a diagram illustrating windings of the rotating electrical machine according to the second embodiment. The difference from the first embodiment is that, as shown in FIG. 4, only the region 9 of the sheet-like semiconductive substrate 11 that contacts the side surfaces of the coils 2a and 2b has curability. A thermally conductive coating film 12 made of a substance (for example, silicone rubber) is formed so as not to be coated on the region 10 that is in contact with the bottom surfaces of the coils 2a and 2b, and a region 13b without the thermal conductive coating film 12 is provided. That is, the slot liner 12a is configured.

本実施の形態によれば、第１の実施の形態と同様にスロット３ａ内に隙間がなくなるのでコイル２ａ，２ｂの冷却性能を向上でき、コイル２ａ，２ｂの収納作業が容易になる。また、コイル２ａ，２ｂの底面でコイルの絶縁層１ｂと半導電性基材１１とが塗布膜が無い領域１３ｂにおいて直接接触するようになり、上コイル２ａと下コイル２ｂは、半導電性基材１１を介して、確実に鉄心スロット３ａの壁面と同電位にすることができ、コイル２ａ，２ｂの表面と鉄心スロット３ａの壁面との間での放電を抑制することができる。 According to this embodiment, since there is no gap in the slot 3a as in the first embodiment, the cooling performance of the coils 2a and 2b can be improved, and the storing operation of the coils 2a and 2b is facilitated. In addition, the coil insulating layer 1b and the semiconductive base material 11 come into direct contact with each other in the region 13b where there is no coating film on the bottom surfaces of the coils 2a and 2b, and the upper coil 2a and the lower coil 2b Through the material 11, it can be surely set to the same potential as the wall surface of the iron core slot 3a, and the discharge between the surfaces of the coils 2a and 2b and the wall surface of the iron core slot 3a can be suppressed.

（第３の実施の形態）
図５は本発明の第３の実施の形態を示す図である。この実施の形態の回転電機の巻線は、シート状の半導電性基材１１のスロット幅方向端部に、熱伝導性塗布膜１２を内側に向けて折り返した折返し部１４を形成し、この折返し部１４でコイル絶縁層１ｂと半導電性基材１１が直接接触するようにして固定子鉄心スロット３ａに挿入した構成である。 (Third embodiment)
FIG. 5 is a diagram showing a third embodiment of the present invention. In the winding of the rotating electrical machine of this embodiment, a folded portion 14 is formed at the end portion in the slot width direction of the sheet-like semiconductive substrate 11 with the thermally conductive coating film 12 folded inward. In this configuration, the coil insulating layer 1b and the semiconductive base material 11 are directly in contact with each other at the folded-back portion 14 and inserted into the stator core slot 3a.

本実施の形態によれば、第１の実施の形態と同様にコイル２ａ，２ｂの冷却性能を向上でき、コイル２ａ，２ｂの収納作業が容易になる。また、折返し部１４でコイルの絶縁層１ｂと半導電性基材１１とが直接接触するようになり、上コイル２ａと下コイル２ｂは、半導電性基材１１を介して、確実に鉄心スロット３ａ壁面と同電位にすることができ、コイル２ａ，２ｂの表面と鉄心スロット３ａの壁面との間での放電の発生を防ぐことができる。 According to the present embodiment, the cooling performance of the coils 2a and 2b can be improved similarly to the first embodiment, and the storing operation of the coils 2a and 2b is facilitated. In addition, the coil insulating layer 1b and the semiconductive base material 11 come into direct contact with each other at the turn-back portion 14, and the upper coil 2a and the lower coil 2b are securely connected to the iron core slot via the semiconductive base material 11. The potential can be the same as that of the 3a wall surface, and the occurrence of discharge between the surfaces of the coils 2a and 2b and the wall surface of the core slot 3a can be prevented.

（第４の実施の形態）
図６は本発明の第４の実施の形態を示す図である。この実施の形態の回転電機の巻線は、スロット３ａに挿入された硬化性熱伝導性物質（例えば、シリコーンゴム）の塗布膜１２付き半導電性基材１１からなるシート状スロットライナー１２ａで覆われたコイル２ａ，２ｂと鉄心スロット３ａの内壁面間に、スペーサ１５を、スロット３ａの長さ方向に複数箇所に挟み込み、コイル２ａ，２ｂをスロット３ａ内に固定した構成である。スペーサ１５を挟み込むスロット長さ方向の位置は上コイル２ａと下コイル２ｂで異なっている。 (Fourth embodiment)
FIG. 6 is a diagram showing a fourth embodiment of the present invention. The winding of the rotating electrical machine of this embodiment is covered with a sheet-like slot liner 12a made of a semiconductive substrate 11 with a coating film 12 of a curable thermally conductive material (for example, silicone rubber) inserted into the slot 3a. The spacers 15 are sandwiched between the broken coils 2a and 2b and the inner wall surface of the iron core slot 3a at a plurality of locations in the length direction of the slot 3a, and the coils 2a and 2b are fixed in the slot 3a. The position in the slot length direction that sandwiches the spacer 15 is different between the upper coil 2a and the lower coil 2b.

図７は、図６のVII− VII線に沿う断面図である。図７に示すようにスペーサ１５を挟み込んだ領域の硬化性熱伝導性物質の塗布膜１２はスペーサ１５により排除され、シート状半導電性基材１１とコイル絶縁層１ｂが接触部１６で直接接触することができる。 7 is a cross-sectional view taken along line VII-VII in FIG. As shown in FIG. 7, the coating film 12 of the curable thermal conductive material in the region sandwiching the spacer 15 is excluded by the spacer 15, and the sheet-like semiconductive substrate 11 and the coil insulating layer 1 b are in direct contact with each other at the contact portion 16. can do.

本実施の形態によれば、第１の実施の形態と同様にコイル２ａ，２ｂの冷却性能を向上でき、コイル２ａ，２ｂの収納作業性も容易になる。また、スペーサ１５の挿入部でコイルの絶縁層１ｂと半導電性基材１１とが直接接触するようになり、上コイル２ａと下コイル２ｂは、半導電性基材１１を介して、確実に鉄心スロット３ａの壁面と同電位にすることができ、コイル２ａ，２ｂの表面と鉄心スロット３ａの壁面との間での放電の発生を防ぐことができる。 According to the present embodiment, the cooling performance of the coils 2a and 2b can be improved similarly to the first embodiment, and the storage workability of the coils 2a and 2b is facilitated. In addition, the insulating layer 1b of the coil and the semiconductive base material 11 come into direct contact with each other at the insertion portion of the spacer 15, and the upper coil 2a and the lower coil 2b are securely connected via the semiconductive base material 11. The same potential as the wall surface of the iron core slot 3a can be set, and the occurrence of discharge between the surfaces of the coils 2a and 2b and the wall surface of the iron core slot 3a can be prevented.

（第５の実施の形態）
図８は本発明の第５の実施の形態の回転電機の巻線を示す断面図である。この実施の形態は、図９に示すようにシート状の半導電性基材１１に硬化性の熱伝導性物質（例えば、シリコーンゴム）の塗布膜１２を形成し、この塗布膜１２を内側に向けて二つ折りにし、これをＵ字形に形成した二つ折りＵ字形のスロットライナー１７によってコイル２ａ，２ｂを覆う。そして図１０に示すようにコイル２ａ，２ｂをスロット３ａ内に挿入した構成である。 (Fifth embodiment)
FIG. 8 is a cross-sectional view showing the winding of the rotating electrical machine according to the fifth embodiment of the present invention. In this embodiment, as shown in FIG. 9, a coating film 12 of a curable thermally conductive material (for example, silicone rubber) is formed on a sheet-like semiconductive substrate 11, and this coating film 12 is placed on the inside. The coils 2a and 2b are covered with a half-folded U-shaped slot liner 17 which is folded in two. Then, as shown in FIG. 10, the coils 2a and 2b are inserted into the slot 3a.

本実施の形態によれば、コイル２ａ，２ｂの冷却性能を向上でき、コイル２ａ，２ｂの収納作業が容易になる。また、コイルの絶縁層１ｂと半導電性基材１１とが直接接触するようになり、上コイル２ａと下コイル２ｂは、半導電性基材１１を介して、確実に鉄心スロット３ａの壁面と同電位にすることができ、コイル２ａ，２ｂの表面と鉄心スロット３ａ壁面との間での放電は発生しない。 According to the present embodiment, the cooling performance of the coils 2a and 2b can be improved, and the storing operation of the coils 2a and 2b is facilitated. Further, the insulating layer 1b of the coil and the semiconductive base material 11 come into direct contact, and the upper coil 2a and the lower coil 2b are securely connected to the wall surface of the iron core slot 3a via the semiconductive base material 11. The potential can be the same, and no discharge occurs between the surfaces of the coils 2a and 2b and the wall surface of the iron core slot 3a.

（第６の実施の形態）
図１１は本発明の第６の実施の形態を示す図である。これまで説明してきた第１から第５の実施の形態では、下コイル２ｂ、上コイル２ａ、個々に、硬化性熱伝導性物質の塗布膜１２付き半導電性基材１１からなるスロットライナー１２ａあるいは１７で覆いスロット３ａに挿入していた。この第６の実施の形態の回転電機の巻線は、下コイル２ｂと上コイル２ａ間にコイル間スペーサ５を挟み、これらを纏めて、硬化性熱伝導性物質（例えば、シリコーンゴム）の塗布膜１２付き半導電性基材１１で形成した一体型Ｕ字形のスロットライナー１９によって覆い、スロット３ａ内に挿入した構成である。 (Sixth embodiment)
FIG. 11 is a diagram showing a sixth embodiment of the present invention. In the first to fifth embodiments described so far, the lower coil 2b, the upper coil 2a, and the slot liner 12a made of the semiconductive base material 11 with the coating film 12 of the curable thermally conductive material, or 17 and was inserted into the cover slot 3a. In the winding of the rotating electrical machine according to the sixth embodiment, an inter-coil spacer 5 is sandwiched between the lower coil 2b and the upper coil 2a, and these are combined to apply a curable thermally conductive material (for example, silicone rubber). It is configured to cover with a monolithic U-shaped slot liner 19 formed of the semiconductive base material 11 with the film 12 and to be inserted into the slot 3a.

本実施の形態によれば、コイル２ａ，２ｂの周りの熱抵抗低減効果、コイル２ａ，２ｂとスロット３ａ内壁面との同電位確保の効果は前記各実施の形態と同様に得られる。さらに、上コイル２ａと下コイル２ｂを纏めて作業できるため、スロット収納作業性が改善される。 According to the present embodiment, the effect of reducing the thermal resistance around the coils 2a and 2b and the effect of ensuring the same potential between the coils 2a and 2b and the inner wall surface of the slot 3a can be obtained in the same manner as in the above embodiments. Furthermore, since the upper coil 2a and the lower coil 2b can be worked together, the slot storage workability is improved.

（第７の実施の形態）
図１２は本発明の第７の実施の形態を示す図である。この実施の形態の回転電機の巻線は、袋状の半導電性基材１８内にコイル２ａ，２ｂを入れ、固定子鉄心のスロット３ａに挿入した後、袋状の半導電性基材１８とコイル２ａ，２ｂの間に硬化性を有する熱伝導性物質（例えば、シリコーンゴム）１２ｂを充填してコイル２ａ，２ｂをスロット３ａ内に固定した構成である。 (Seventh embodiment)
FIG. 12 is a diagram showing a seventh embodiment of the present invention. In the winding of the rotating electrical machine of this embodiment, the coils 2a and 2b are placed in the bag-shaped semiconductive base material 18 and inserted into the slot 3a of the stator core, and then the bag-shaped semiconductive base material 18 is used. The coil 2a, 2b is fixed in the slot 3a by filling a curable heat conductive material (for example, silicone rubber) 12b between the coil 2a, 2b.

本実施の形態によれば、コイル２ａ，２ｂの冷却性能を向上でき、コイル２ａ，２ｂのスロット３ａへの収納作業が容易になる。また、コイル２ａ，２ｂの底面と上面でコイル絶縁層１ｂと袋状の半導電性基材１８とが直接接触するようになり、上コイル２ａと下コイル２ｂは、袋状の半導電性基材１８を介して、確実に鉄心スロット３ａの壁面と同電位にすることができ、コイル２ａ，２ｂの表面と鉄心スロット３ａの壁面との間で放電が発生することを防ぐことができる。 According to the present embodiment, the cooling performance of the coils 2a and 2b can be improved, and the storing operation of the coils 2a and 2b in the slot 3a becomes easy. Further, the coil insulating layer 1b and the bag-like semiconductive substrate 18 come into direct contact with the bottom and top surfaces of the coils 2a and 2b, and the upper coil 2a and the lower coil 2b are formed of a bag-like semiconductive base. Through the material 18, it can be surely set to the same potential as the wall surface of the iron core slot 3a, and discharge can be prevented from occurring between the surfaces of the coils 2a and 2b and the wall surface of the iron core slot 3a.

（第８の実施の形態）
図１３は本発明の第８の実施の形態を示す図である。この実施の形態は、下コイル２ｂと上コイル２ａの間にコイル間スペーサ５を挟み、下コイル２ｂから上コイル２ａにまでわたる大きさのＵ字状に形成したシート状半導電性基材１１の中に纏めて入れ、固定子鉄心のスロット３ａに挿入した後、シート状半導電性基材１１と上・下コイル２ａ，２ｂおよびコイル間スペーサ５との間に硬化性を有する熱伝導性物質（例えば、シリコーンゴム）１２ｂを充填してコイル２ａ，２ｂをスロット３ａ内に固定した構成である。 (Eighth embodiment)
FIG. 13 is a diagram showing an eighth embodiment of the present invention. In this embodiment, an inter-coil spacer 5 is sandwiched between the lower coil 2b and the upper coil 2a, and a sheet-like semiconductive substrate 11 formed in a U-shape having a size extending from the lower coil 2b to the upper coil 2a. And is inserted into the slot 3a of the stator core, and then is thermally conductive between the sheet-like semiconductive substrate 11 and the upper and lower coils 2a and 2b and the inter-coil spacer 5. In this configuration, a material (for example, silicone rubber) 12b is filled and the coils 2a and 2b are fixed in the slot 3a.

本実施の形態によれば、前記第７の実施の形態と同様にコイル周りの熱抵抗低減効果、コイルとスロット内壁面との同電位確保の効果が得られる。また上・下コイルを纏めて作業できるため、組立作業性がよい。 According to the present embodiment, the effect of reducing the thermal resistance around the coil and the same potential between the coil and the inner wall surface of the slot can be obtained as in the seventh embodiment. Also, since the upper and lower coils can be worked together, assembly workability is good.

（第９の実施の形態）
図１４は本発明の第９の実施の形態を示す図である。この実施の形態は、上コイル２ａおよび下コイル２ｂの絶縁層１ｂの片方の側面に、表面の凹凸を埋めるだけの厚さの、硬化性を有する熱伝導性物質（例えば、シリコーンゴム）の塗布膜２１を形成する。その後、塗布膜２１と鉄心スロット３ａの内壁面が直接接触するように、コイル２ａ，２ｂを固定子鉄心のスロット３ａに挿入する。そして、コイル２ａ，２ｂの塗布膜２１を形成されていない側面とスロット壁との間に、薄い板状のサイドスペーサ２２を挟み込み、コイル２ａ，２ｂをスロット３ａ内に押し付けて固定した構成である。硬化性熱伝導性物質の塗布膜２１と薄い板状のサイドスペーサ２２の少なくとも一方は半導電性とする。 (Ninth embodiment)
FIG. 14 is a diagram showing a ninth embodiment of the present invention. In this embodiment, a curable thermally conductive material (for example, silicone rubber) having a thickness sufficient to fill the surface unevenness is applied to one side surface of the insulating layer 1b of the upper coil 2a and the lower coil 2b. A film 21 is formed. Thereafter, the coils 2a and 2b are inserted into the slots 3a of the stator core so that the coating film 21 and the inner wall surface of the core slot 3a are in direct contact. A thin plate-like side spacer 22 is sandwiched between the side wall of the coils 2a and 2b where the coating film 21 is not formed and the slot wall, and the coils 2a and 2b are pressed into the slot 3a and fixed. . At least one of the coating film 21 of the curable thermal conductive material and the thin plate-like side spacer 22 is semiconductive.

本実施の形態によれば、コイル２ａ，２ｂと鉄心３間の熱抵抗が小さくなり、コイル２ａ，２ｂの冷却性能が向上する。また、コイル２ａ，２ｂとスロット３ａ内壁面との同電位確保の効果によりコイル２ａ，２ｂの表面とスロット３ａ壁面との間での放電は発生しない。 According to the present embodiment, the thermal resistance between the coils 2a and 2b and the iron core 3 is reduced, and the cooling performance of the coils 2a and 2b is improved. Further, the discharge between the surfaces of the coils 2a and 2b and the wall surface of the slot 3a does not occur due to the effect of securing the same potential between the coils 2a and 2b and the inner wall surface of the slot 3a.

（第１０の実施の形態）
図１５は本発明の第１０の実施の形態を示す図である。この実施の形態は、スロット３ａの片側の壁面に、表面の凹凸を埋めるだけの厚さの、硬化性を有する熱伝導性物質（例えば、シリコーンゴム）の塗布膜２３を形成する。その後、この塗布膜２３とコイル絶縁層１ｂが直接接触するように、コイル２ａ，２ｂを固定子鉄心のスロット３ａに挿入する。そして、塗布膜２３と反対側のスロット壁とコイル２ａ，２ｂとの間に、薄い板状のサイドスペーサ２２を挟み込み、コイル２ａ，２ｂをスロット３ａ内に押し付けて固定した構成である。硬化性熱伝導物質の塗布膜２１と薄い板状のサイドスペーサ２２の少なくとも一方は半導電性とする。 (Tenth embodiment)
FIG. 15 is a diagram showing a tenth embodiment of the present invention. In this embodiment, a coating film 23 of a thermally conductive material (for example, silicone rubber) having a thickness sufficient to fill the surface irregularities is formed on the wall surface on one side of the slot 3a. Thereafter, the coils 2a and 2b are inserted into the slots 3a of the stator core so that the coating film 23 and the coil insulating layer 1b are in direct contact with each other. A thin plate-like side spacer 22 is sandwiched between the slot wall opposite to the coating film 23 and the coils 2a, 2b, and the coils 2a, 2b are pressed into the slot 3a and fixed. At least one of the coating film 21 of the curable thermal conductive material and the thin plate-like side spacer 22 is semiconductive.

本実施の形態によれば、コイル２ａ，２ｂと鉄心３間の熱抵抗が小さくなり、コイル２ａ，２ｂの冷却性能が向上する。また、コイル２ａ，２ｂとスロット３ａ内壁面との同電位確保の効果によりコイル２ａ，２ｂの表面とスロット３ａ壁面との間での放電の発生を防ぐことができる。 According to the present embodiment, the thermal resistance between the coils 2a and 2b and the iron core 3 is reduced, and the cooling performance of the coils 2a and 2b is improved. Further, the occurrence of discharge between the surfaces of the coils 2a and 2b and the wall surface of the slot 3a can be prevented by the effect of securing the same potential between the coils 2a and 2b and the inner wall surface of the slot 3a.

（第１１の実施の形態）
図１６は本発明の第１１の実施の形態を示す図である。この実施形態は、固定子鉄心３のスロット３ａ内にスロット底スペーサ４、下コイル２ｂ、コイル間スペーサ５、上コイル２ａ、楔下スペーサ６の順に挿入し、スロット３ａとコイル２ａ，２ｂおよびこれらのスペーサ４，５，６との隙間に、硬化性を有する半導電性の熱伝導性物質（例えば、カーボン粒子を練り込んだシリコーンゴム）２４を充填し、その後、楔７により所定位置に固定した構成である。 (Eleventh embodiment)
FIG. 16 is a diagram showing an eleventh embodiment of the present invention. In this embodiment, the slot bottom spacer 4, the lower coil 2 b, the inter-coil spacer 5, the upper coil 2 a, and the wedge lower spacer 6 are inserted into the slot 3 a of the stator core 3 in this order, and the slot 3 a and the coils 2 a and 2 b and these A space between the spacers 4, 5, 6 is filled with a curable semiconductive heat conductive material (for example, silicone rubber kneaded with carbon particles) 24, and then fixed in place by a wedge 7. This is the configuration.

本実施の形態によれば、コイル２ａ，２ｂとスロット３ａ壁間の隙間が半導電性の熱伝導性物質２４に置き換わるため、コイル２ａ，２ｂと鉄心３間の熱抵抗が小さくなり、コイル２ａ，２ｂの冷却性能が向上する。また、波板状のバネ板を圧縮しながらコイル側面とスロット内壁面の間に挿入する必要がなくなるため、コイルの組立作業が容易になる。また、コイル２ａ，２ｂとスロット３ａ内壁面は半導電性の熱伝導性物質２４を介して電気的な導通を保つため、コイル２ａ，２ｂの表面と鉄心のスロット３ａ壁面との間で放電は発生しない。 According to the present embodiment, since the gap between the coils 2a, 2b and the wall of the slot 3a is replaced with the semiconductive heat conductive material 24, the thermal resistance between the coils 2a, 2b and the iron core 3 is reduced, and the coil 2a , 2b cooling performance is improved. Further, it is not necessary to insert the corrugated spring plate between the coil side surface and the inner wall surface of the slot while compressing, so that the coil assembly operation is facilitated. Further, since the coils 2a and 2b and the inner wall surface of the slot 3a are kept electrically connected via the semiconductive heat conductive material 24, the discharge is caused between the surface of the coils 2a and 2b and the wall surface of the slot 3a of the iron core. Does not occur.

なお、上記各実施の形態において、硬化性を有する熱伝導性物質１２ｂおよび熱伝導性塗布膜１２，２１，２３および半導電性熱伝導性物質２４内に、硬化性を有する熱伝導性物質の熱伝導率より大きい熱伝導率を有する微粒子（例えば、熱伝導性物質にシリコーンゴムを採用した場合、窒化ボロンＢＮなど）を混合した構成にすると、前記塗布膜１２，２１，２３等の熱伝導率が大きくなり、コイル２ａ，２ｂと鉄心３間の熱抵抗が低減するため、コイル２ａ，２ｂの冷却性能を更に改善することができる。 In each of the above-described embodiments, the curable thermally conductive material 12b, the thermally conductive coating films 12, 21, 23, and the semiconductive thermally conductive material 24 include a curable thermally conductive material. When a configuration in which fine particles having a thermal conductivity larger than the thermal conductivity (for example, boron nitride BN when silicone rubber is used as the thermal conductive material) is mixed, the thermal conductivity of the coating films 12, 21, 23, etc. Since the rate increases and the thermal resistance between the coils 2a and 2b and the iron core 3 decreases, the cooling performance of the coils 2a and 2b can be further improved.

また、硬化性を有する熱伝導性物質１２ｂおよび熱伝導性塗布膜１２，２１，２３および半導電性熱伝導性物質２４内に、硬化性を有する熱伝導性物質の線膨張係数より大きい線膨張係数を有する微粒子（例えば、熱伝導性物質にシリコーンゴムを採用した場合、アルミナＡｌ₂Ｏ₃など）を混合した構成にすると、回転電機の運転時にコイル２ａ，２ｂが発熱するため、前記塗布膜１２，２１，２３等の温度が上がり、熱膨張量が大きくなり、コイル２ａ，２ｂとスロット３ａ内壁面間の圧力が大きくなり、接触熱抵抗が低減するため、コイル２ａ，２ｂの冷却性能を更に改善することができる。 Further, in the thermally conductive material 12b having thermal properties, the thermal conductive coating films 12, 21, 23 and the semiconductive thermal conductive material 24, the linear expansion larger than the linear expansion coefficient of the thermally conductive material having curing properties. When a configuration in which fine particles having a coefficient (for example, alumina Al ₂ O ₃ when silicone rubber is used as the heat conductive material) is mixed, the coils 2a and 2b generate heat during operation of the rotating electric machine, and thus the coating film The temperature of 12, 21, 23, etc. rises, the amount of thermal expansion increases, the pressure between the coils 2a, 2b and the inner wall surface of the slot 3a increases, and the contact thermal resistance decreases, so the cooling performance of the coils 2a, 2b is improved. Further improvements can be made.

また、硬化性を有する熱伝導性物質１２ｂおよび熱伝導性塗布膜１２，２１，２３および半導電性熱伝導性物質２４を、回転電機の機内に封入される冷媒ガスよりも熱伝導率のよい雰囲気ガス（例えば冷却ガスが空気の場合、例えばヘリウムなど）中で形成させると、硬化性を有する熱伝導性物質１２ｂ等の中に混入する冷媒ガスが、この冷媒ガスよりも熱伝導率が大きいガスに置き換わるために、硬化性を有する熱伝導性物質１２ｂ等の熱伝導率が大きくなり、コイル２ａ，２ｂと鉄心３間の熱抵抗が低減するため、コイル２ａ，２ｂの冷却性能を更に改善することができる。 Further, the heat conductive material 12b having the curability, the heat conductive coating films 12, 21, 23, and the semiconductive heat conductive material 24 have better heat conductivity than the refrigerant gas sealed in the machine of the rotating electrical machine. When formed in an atmospheric gas (for example, when the cooling gas is air, for example, helium), the refrigerant gas mixed into the curable thermally conductive material 12b has a higher thermal conductivity than the refrigerant gas. Since the gas is replaced, the thermal conductivity of the thermally conductive material 12b having curing properties is increased, and the thermal resistance between the coils 2a, 2b and the iron core 3 is reduced, so that the cooling performance of the coils 2a, 2b is further improved. can do.

さらに、シート状半導電性基材１１は、電気絶縁性基材の片面に導電性材料をコーティングした構成でもよい。また、シート状半導電性基材１１は、半導電性を有する熱伝導性物質を含浸した織布や不織布でもよい。 Further, the sheet-like semiconductive substrate 11 may have a configuration in which a conductive material is coated on one side of the electrically insulating substrate. Further, the sheet-like semiconductive substrate 11 may be a woven fabric or a non-woven fabric impregnated with a semiconductive thermally conductive material.

本発明の第１の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 1st Embodiment of this invention. 本発明の第１の実施の形態の回転電機の巻線を構成するシート状スロットライナーを示す斜視図。The perspective view which shows the sheet-like slot liner which comprises the coil | winding of the rotary electric machine of the 1st Embodiment of this invention. 本発明の第２の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 2nd Embodiment of this invention. 本発明の第２の実施の形態の回転電機の巻線を構成するシート状スロットライナーを示す斜視図。The perspective view which shows the sheet-like slot liner which comprises the coil | winding of the rotary electric machine of the 2nd Embodiment of this invention. 本発明の第３の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 3rd Embodiment of this invention. 本発明の第４の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 4th Embodiment of this invention. 図６のVII−VII線に沿う断面図。Sectional drawing which follows the VII-VII line of FIG. 本発明の第５の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 5th Embodiment of this invention. 本発明の第５の実施の形態の回転電機の巻線を構成する二つ折りＵ字形スロットライナーを示す断面図。Sectional drawing which shows the half-fold U-shaped slot liner which comprises the coil | winding of the rotary electric machine of the 5th Embodiment of this invention. 本発明の第５の実施の形態の回転電機の巻線を構成するコイルのスロットへの収納過程を示す図。The figure which shows the accommodation process to the slot of the coil which comprises the coil | winding of the rotary electric machine of the 5th Embodiment of this invention. 本発明の第６の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 6th Embodiment of this invention. 本発明の第７の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 7th Embodiment of this invention. 本発明の第８の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 8th Embodiment of this invention. 本発明の第９の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 9th Embodiment of this invention. 本発明の第１０の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 10th Embodiment of this invention. 本発明の第１１の実施の形態の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the rotary electric machine of the 11th Embodiment of this invention. 従来の回転電機の巻線を示す断面図。Sectional drawing which shows the coil | winding of the conventional rotary electric machine.

符号の説明Explanation of symbols

１ａ…コイル導体、１ｂ…絶縁層、２ａ…上コイル、２ｂ…下コイル、３…鉄心、３ａ…スロット、４…スロット底スペーサ、５…コイル間スペーサ、６…楔下スペーサ、７…スロット楔、８…バネ板、９…コイル側面との接触領域、１０…コイル底面との接触領域、１１…シート状半導電性基材、１２…熱伝導性塗布膜、１２ａ…シート状スロットライナー、１２ｂ…硬化性熱伝導性物質、１３ａ…塗布膜無し領域（コイル上面位置）、１３ｂ…塗布膜無し領域（コイル底面位置）、１４…折返し部、１５…スペーサ、１６…接触部、１７…二つ折りＵ字形スロットライナー、１８…袋状半導電性基材、１９…一体型Ｕ字形スロットライナー、２１…熱伝導性塗布膜、２２…サイドスペーサ、２３…熱伝導性塗布膜、２４…半導電性熱伝導性物質、Ａ…スロット長さ方向、Ｂ…スロット深さおよび幅方向。

DESCRIPTION OF SYMBOLS 1a ... Coil conductor, 1b ... Insulating layer, 2a ... Upper coil, 2b ... Lower coil, 3 ... Iron core, 3a ... Slot, 4 ... Slot bottom spacer, 5 ... Inter-coil spacer, 6 ... Under wedge spacer, 7 ... Slot wedge , 8 ... Spring plate, 9 ... Contact area with coil side surface, 10 ... Contact area with coil bottom surface, 11 ... Sheet-like semiconductive substrate, 12 ... Thermally conductive coating film, 12a ... Sheet-like slot liner, 12b ... curable thermal conductive material, 13a ... area without coating film (coil top face position), 13b ... area without coating film (coil bottom face position), 14 ... folded part, 15 ... spacer, 16 ... contact part, 17 ... folded in half U-shaped slot liner, 18 ... bag-shaped semiconductive substrate, 19 ... integrated U-shaped slot liner, 21 ... heat conductive coating film, 22 ... side spacer, 23 ... heat conductive coating film, 24 ... semiconductive Heat conduction Material, A ... slot length direction, B ... slot depth and width directions.

Claims

コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーはシート状の半導電性基材の片面に硬化性を有する熱伝導性物質の塗布膜を形成してなり、前記熱伝導性物質の塗布膜が前記コイルに接するように前記コイルを覆い、前記半導電性基材は特定の部位のみにおいて前記コイルに接していることを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine with a slot liner interposed, the slot liner is a sheet-like semiconductive A coating film of a thermally conductive material having curability is formed on one side of the conductive substrate, the coil is covered so that the coating film of the thermally conductive material is in contact with the coil, and the semiconductive substrate is A winding of a rotating electrical machine, wherein the winding is in contact with the coil only at a specific portion.

前記特定の部位は、前記半導電性基材上の塗布膜無し部によって前記コイルの上面または底面に設けられていることを特徴とする請求項１記載の回転電機の巻線。 The winding of the rotating electrical machine according to claim 1, wherein the specific portion is provided on an upper surface or a bottom surface of the coil by a coating film-less portion on the semiconductive substrate.

前記特定の部位は、前記半導電性基材のスロット幅方向端部を前記塗布膜側に向けて折り返して形成された折返し部によって前記コイルの側面に設けられていることを特徴とする請求項１記載の回転電機の巻線。 The specific portion is provided on a side surface of the coil by a folded portion formed by folding an end portion in the slot width direction of the semiconductive substrate toward the coating film side. The winding of the rotary electric machine according to 1.

前記特定の部位は、前記スロットの壁と前記スロットライナーの間に設けられ前記塗布膜を排除して前記半導電性基材を前記コイルに接触させるスペーサによって形成されていることを特徴とする請求項１記載の回転電機の巻線。 The specific portion is formed by a spacer that is provided between a wall of the slot and the slot liner and that makes the semiconductive substrate contact the coil by removing the coating film. Item 1. A rotating electrical machine winding according to Item 1.

コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーは、シート状の半導電性基材の片面に硬化性を有する熱伝導性物質を塗布し前記半導電性基材を外側にして二つ折りにしたシート状材料をＵ字形に形成してなることを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine with a slot liner interposed, the slot liner is a sheet-like half A rotating electric machine comprising: a sheet-like material formed in a U-shape by applying a curable thermally conductive material on one side of a conductive substrate and folding the semiconductive substrate outward. Windings.

コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットライナーは、袋状の半導電性基材内に前記コイルを入れ、前記スロットに挿入した後、前記半導電性基材と前記コイルの間に硬化性を有する熱伝導性物質を充填して形成されていることを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine with a slot liner interposed, the slot liner is a bag-shaped half The coil is formed in a conductive base material, inserted into the slot, and then filled with a thermally conductive material having curability between the semiconductive base material and the coil. Winding of rotating electrical machine.

前記コイルは上コイルと下コイルからなり、前記スロットライナーは前記上コイルと前記下コイルを纏めて包囲していることを特徴とする請求項１乃至請求項６のいずれかに記載の回転電機の巻線。 The rotating electrical machine according to any one of claims 1 to 6, wherein the coil includes an upper coil and a lower coil, and the slot liner collectively surrounds the upper coil and the lower coil. Winding.

コイル導体の周囲に絶縁層を形成してなるコイルを回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記コイルの少なくとも片側の側面に硬化性を有する熱伝導性物質の塗布膜を形成し、前記塗布膜と前記スロットの壁が直接接触するように前記コイルを前記スロットに挿入したことを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of the rotating electrical machine, at least one side surface of the coil has a curable thermal conductivity A winding for a rotating electrical machine, wherein a coating film of a substance is formed, and the coil is inserted into the slot so that the coating film and a wall of the slot are in direct contact with each other.

コイル導体の周囲に絶縁層を形成してなるコイルを回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットの少なくとも片側の壁面に硬化性を有する熱伝導性物質の塗布膜を形成し、前記コイルが前記塗布膜に直接接触するように前記コイルを前記スロットに挿入したことを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in the iron core of the rotating electrical machine, at least one wall surface of the slot has a curable thermal conductivity A winding of a rotating electrical machine, wherein a coating film of a substance is formed, and the coil is inserted into the slot so that the coil is in direct contact with the coating film.

コイル導体の周囲に絶縁層を形成してなるコイルをスロットライナーを介在させて回転電機の鉄心に形成されたスロットに収納してなる回転電機の巻線において、前記スロットと前記コイルとの隙間に硬化性を有する半導電性の熱伝導性物質を充填して前記コイルを固定したことを特徴とする回転電機の巻線。 In a winding of a rotating electrical machine in which a coil formed by forming an insulating layer around a coil conductor is housed in a slot formed in an iron core of a rotating electrical machine with a slot liner interposed, the gap between the slot and the coil A winding for a rotating electrical machine, wherein the coil is fixed by filling a semiconductive heat conductive material having a curable property.

前記熱伝導性物質内に、前記熱伝導性物質の熱伝導率より大きい熱伝導率の物質を混合したことを特徴とする請求項１乃至請求項１０記載のいずれかに記載の回転電機の巻線。 The rotating electrical machine winding according to any one of claims 1 to 10, wherein a substance having a thermal conductivity larger than that of the thermal conductive substance is mixed in the thermal conductive substance. line.

前記熱伝導性物質内に、前記熱伝導性物質の線膨張係数より大きい線膨張係数の物質を混合させたことを特徴とする請求項１乃至請求項１０記載のいずれかに記載の回転電機の巻線。 The rotating electrical machine according to any one of claims 1 to 10, wherein a substance having a linear expansion coefficient larger than that of the thermal conductive substance is mixed in the thermal conductive substance. Winding.

前記熱伝導性物質を回転電機の冷媒ガスよりも熱伝導率の大きい雰囲気ガス中で形成したことを特徴とする請求項１乃至請求項１０記載のいずれかに記載の回転電機の巻線。 The winding of the rotating electrical machine according to any one of claims 1 to 10, wherein the thermal conductive material is formed in an atmospheric gas having a thermal conductivity higher than that of a refrigerant gas of the rotating electrical machine.

請求項１ないし請求項１３のいずれかに記載の回転電機の巻線を備えていることを特徴とする回転電機。

A rotating electrical machine comprising the winding of the rotating electrical machine according to any one of claims 1 to 13.