JP2020184850A - Coil cooling device of stator of rotary electric machine - Google Patents

Coil cooling device of stator of rotary electric machine Download PDF

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JP2020184850A
JP2020184850A JP2019088794A JP2019088794A JP2020184850A JP 2020184850 A JP2020184850 A JP 2020184850A JP 2019088794 A JP2019088794 A JP 2019088794A JP 2019088794 A JP2019088794 A JP 2019088794A JP 2020184850 A JP2020184850 A JP 2020184850A
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stator
coil
electric machine
cooling device
rotary electric
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JP7156165B2 (en
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優哉 藤原
Yuya Fujiwara
優哉 藤原
有 酒井
Yu Sakai
有 酒井
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Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
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Meidensha Electric Manufacturing Co Ltd
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Abstract

【課題】回転電機のステータのコイルを効率よく冷却することができる回転電機のステータのコイル冷却器具を提供する。【解決手段】環状をなすステータコア１１のヨーク部１１ａの内周に周方向に沿って複数突設されたティース部１１ｂにコイル１２をそれぞれ装着されたステータ１０のコイル１２を冷却する回転電機のステータ１０のコイル冷却器具２０であって、ステータ１０の軸方向一端側に配設されて内部に冷却液１を送給される供給マニホールド２１と、供給マニホールド２１に基端側を連結されて隣り合うコイル１２の間に先端側を位置させるように挿入されると共にコイル１２へ向けて冷却液１を噴射する噴射孔２２ａ，２２ｂを周面に形成されて先端を閉塞されたノズル管２２とを備えている。【選択図】図１PROBLEM TO BE SOLVED: To provide a coil cooling device for a stator of a rotary electric machine capable of efficiently cooling the coil of the stator of a rotary electric machine. SOLUTION: A stator of a rotary electric machine for cooling a coil 12 of a stator 10 in which a coil 12 is mounted on a plurality of teeth portions 11b projecting along the inner circumference of a yoke portion 11a of an annular stator core 11 along the circumferential direction. The coil cooling device 20 of the 10 is adjacent to the supply manifold 21 which is arranged on one end side in the axial direction of the stator 10 and is supplied with the coolant 1 inside, and the base end side is connected to the supply manifold 21 and adjacent to each other. It is provided with a nozzle tube 22 having injection holes 22a and 22b formed on the peripheral surface and having the tip closed by being inserted between the coils 12 so as to position the tip side and injecting the coolant 1 toward the coil 12. ing. [Selection diagram] Fig. 1

Description

本発明は、電動機や発電機等の回転電機のステータのコイルを冷却する回転電機のステータのコイル冷却器具に関する。 The present invention relates to a coil cooling device for a stator of a rotating electric machine that cools the coil of the stator of a rotating electric machine such as an electric motor or a generator.

電動機や発電機等の回転電機のステータのコイルを冷却液で冷却する冷却構造としては、例えば、下記特許文献１に記載されているものがある。この構造は、環状をなすステータコアのヨーク部の内周に周方向に沿って複数突設されたティース部にコイルをそれぞれ装着されたステータの軸方向一端側から、当該コイルの角部分へ向けて冷却液を噴き付けることにより、当該コイルの、当該ステータの軸方向及び周方向の両方の外面へ冷却液を送給して、当該コイルを冷却するようにしている。 As a cooling structure for cooling the coil of the stator of a rotary electric machine such as an electric motor or a generator with a coolant, for example, there is one described in Patent Document 1 below. In this structure, a coil is mounted on each of the teeth portions protruding along the circumferential direction on the inner circumference of the yoke portion of the annular stator core from one end side in the axial direction toward the corner portion of the coil. By spraying the cooling liquid, the cooling liquid is supplied to the outer surfaces of the coil in both the axial direction and the circumferential direction of the stator to cool the coil.

特開２０１４−０９６８７６号公報Japanese Unexamined Patent Publication No. 2014-096876

前記特許文献１に記載されている構造においては、前記コイルの角部分へ向けて冷却液を噴き付けることにより、当該コイルの、前記ステータの軸方向及び周方向の両方の外面へ冷却液を送給するようにしていることから、冷却液が、コイルの角部分へ衝突することにより送給力の低下を生じて、当該コイルの、当該ステータの軸方向の奥の外面まで到達しにくくなってしまい、当該コイルの冷却効率の低下を招いてしまっていた。 In the structure described in Patent Document 1, by spraying the cooling liquid toward the corner portion of the coil, the cooling liquid is sent to the outer surfaces of the coil in both the axial direction and the circumferential direction of the stator. Since the coolant is supplied, the coolant collides with the corners of the coil, causing a decrease in the feeding force, and it becomes difficult for the coolant to reach the outer surface of the coil at the back in the axial direction. , The cooling efficiency of the coil has been lowered.

このようなことから、本発明は、回転電機のステータのコイルを効率よく冷却することができる回転電機のステータのコイル冷却器具を提供することを目的とする。 Therefore, an object of the present invention is to provide a coil cooling device for a stator of a rotary electric machine, which can efficiently cool the coil of the stator of a rotary electric machine.

前述した課題を解決するための、本発明に係る回転電機のステータのコイル冷却器具は、環状をなすステータコアのヨーク部の内周に周方向に沿って複数突設されたティース部にコイルをそれぞれ装着されたステータの当該コイルを冷却する回転電機のステータのコイル冷却器具であって、前記ステータの軸方向一端側に配設されて内部に冷却液を送給される供給マニホールドと、前記供給マニホールドに基端側を連結されて隣り合う前記コイルの間に先端側を位置させるように挿入されると共に当該コイルへ向けて冷却液を噴射する噴射孔を周面に形成されて先端を閉塞されたノズル管とを備えていることを特徴とする。 In order to solve the above-mentioned problems, the coil cooling device for the stator of the rotary electric machine according to the present invention has a coil on each of the teeth portions protruding along the circumferential direction on the inner circumference of the yoke portion of the annular stator core. A coil cooling device for the stator of a rotary electric machine that cools the coil of the mounted stator, and a supply manifold disposed on one end side in the axial direction of the stator to supply coolant to the inside, and the supply manifold. The base end side is connected to the coil and inserted so as to position the tip side between the adjacent coils, and an injection hole for injecting a coolant toward the coil is formed on the peripheral surface to close the tip. It is characterized by having a nozzle tube.

また、本発明に係る回転電機のステータのコイル冷却器具は、上述した回転電機のステータのコイル冷却器具であって、前記コイルの、前記ステータの軸方向全長にわたって対向する長さを前記ノズル管が有していることを特徴とする。 Further, the coil cooling device for the stator of the rotary electric machine according to the present invention is the coil cooling device for the stator of the rotary electric machine described above, and the nozzle tube has a length of the coil facing the entire axial length of the stator. It is characterized by having.

また、本発明に係る回転電機のステータのコイル冷却器具は、上述した回転電機のステータのコイル冷却器具であって、すべての隣り合う前記コイルの間に前記ノズル管が挿入され、前記ステータの軸心位置よりも上方に位置する前記コイルの外面に対向する前記ノズル管の前記噴射孔が、当該ステータの径方向外側位置へ向けて冷却液を噴射するように形成されると共に、前記ステータの軸心位置よりも下方に位置する前記コイルの外面に対向する前記ノズル管の前記噴射孔が、当該ステータの径方向内側位置へ向けて冷却液を噴射するように形成されていることを特徴とする。 Further, the coil cooling device for the stator of the rotary electric machine according to the present invention is the coil cooling device for the stator of the rotary electric machine described above, and the nozzle tube is inserted between all the adjacent coils, and the shaft of the stator is inserted. The injection hole of the nozzle tube facing the outer surface of the coil located above the center position is formed so as to inject the coolant toward the radial outer position of the stator, and the shaft of the stator. The injection hole of the nozzle tube facing the outer surface of the coil located below the center position is formed so as to inject the coolant toward the radially inner position of the stator. ..

本発明に係る回転電機のステータのコイル冷却器具によれば、供給マニホールドに冷却液を送給すると、コイルの、ステータの軸方向に沿った外面に対して、ノズル管の噴射孔から冷却液を噴き掛けることができるので、当該コイルを効率よく冷却することができる。 According to the coil cooling device of the stator of the rotary electric machine according to the present invention, when the coolant is supplied to the supply manifold, the coolant is supplied from the injection hole of the nozzle tube to the outer surface of the coil along the axial direction of the stator. Since it can be sprayed, the coil can be cooled efficiently.

本発明に係る回転電機のステータのコイル冷却器具の主な実施形態のステータに配設した状態の外観図であり、Ａが背面図、Ｂが正面図である。It is an external view of the state in which it is arranged in the stator of the main embodiment of the coil cooling apparatus of the stator of the rotary electric machine which concerns on this invention, A is a rear view, and B is a front view. 図１のコイル冷却器具の外観図であり、Ａが側面図、Ｂが正面図である。It is an external view of the coil cooling device of FIG. 1, A is a side view, and B is a front view. 図１のコイル冷却器具の外観図であり、Ａが斜視図、ＢがＡの矢線Ｂ部の抽出拡大図である。It is an external view of the coil cooling apparatus of FIG. 1, A is a perspective view, and B is an extracted enlarged view of the arrow line B portion of A.

本発明に係る回転電機のステータのコイル冷却器具の実施形態を図面に基づいて説明するが、本発明は図面に基づいて説明する以下の実施形態のみに限定されるものではない。 An embodiment of a coil cooling device for a stator of a rotary electric machine according to the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments described based on the drawings.

〈主な実施形態〉
本発明に係る回転電機のステータのコイル冷却器具の主な実施形態を図１〜３に基づいて説明する。 <Main embodiment>
A main embodiment of the coil cooling device for the stator of the rotary electric machine according to the present invention will be described with reference to FIGS.

図１に示すように、環状をなすステータ１０のステータコア１１のヨーク部１１ａの内周には、径方向内側へ向かって突出するティース部１１ｂが周方向に沿って複数設けられている。前記ステータコア１１の前記ティース部１１ｂには、コイル１２がそれぞれ装着されている。 As shown in FIG. 1, a plurality of tooth portions 11b projecting inward in the radial direction are provided on the inner circumference of the yoke portion 11a of the stator core 11 of the annular stator 10 along the circumferential direction. A coil 12 is mounted on each of the teeth portion 11b of the stator core 11.

前記ステータ１０の軸方向一端側（図１Ａ中、紙面手前側、図１Ｂ中、紙面奥側）には、コイル冷却器具２０の環状に曲折された管からなる供給マニホールド２１が当該ステータ１０と同軸をなすようにして配設されている。 On one end side in the axial direction of the stator 10 (in FIG. 1A, the front side of the paper surface, in FIG. 1B, the back side of the paper surface), a supply manifold 21 composed of an annularly bent pipe of the coil cooling device 20 is coaxial with the stator 10. It is arranged so as to form a.

図１〜３に示すように、前記供給マニホールド２１の、前記ステータ１０との対向面側には、当該ステータ１０の軸方向（図１中、紙面垂直方向）に沿って長手方向を向けて隣り合う前記コイル１２の間に先端側（図２Ａ中、左端側）を位置させるように当該間にそれぞれ挿入された複数のノズル管２２の基端側（図２Ａ中、右端側）が当該供給マニホールド２１の周方向に沿って規定の間隔で連結されており、当該ノズル管２２は、先端を閉塞されると共に、当該コイル１２の、当該ステータ１０の軸方向全長にわたって対向する長さを有している。 As shown in FIGS. 1 to 3, the supply manifold 21 is adjacent to the side facing the stator 10 in the longitudinal direction along the axial direction of the stator 10 (in FIG. 1, the direction perpendicular to the paper surface). The supply manifold is located on the base end side (right end side in FIG. 2A) of a plurality of nozzle tubes 22 inserted so as to position the tip side (left end side in FIG. 2A) between the matching coils 12. The nozzle tube 22 is connected at a predetermined interval along the circumferential direction of the 21. The tip of the nozzle tube 22 is closed, and the coil 12 has a length facing the entire axial length of the stator 10. There is.

前記供給マニホールド２１の軸心位置、すなわち、前記ステータ１０の軸心位置Ｃよりも上方に位置する前記コイル１２の外面に対向する前記ノズル管２２の周面には、当該コイル１２の当該外面の、当該ステータ１０の径方向外側位置へ向けて冷却液１を噴射する噴射孔２２ａが軸方向に沿って規定の間隔で複数形成されている。 The axial position of the supply manifold 21, that is, the peripheral surface of the nozzle tube 22 facing the outer surface of the coil 12 located above the axial center position C of the stator 10, is the outer surface of the coil 12. A plurality of injection holes 22a for injecting the coolant 1 toward the radially outer position of the stator 10 are formed at predetermined intervals along the axial direction.

他方、前記ステータ１０の軸心位置Ｃよりも下方に位置する前記コイル１２の外面に対向する前記ノズル管２２の周面には、当該コイル１２の当該外面の、当該ステータ１０の径方向内側位置へ向けて冷却液１を噴射する噴射孔２２ｂが軸方向に沿って規定の間隔で複数形成されている。 On the other hand, on the peripheral surface of the nozzle tube 22 facing the outer surface of the coil 12 located below the axial center position C of the stator 10, the radial inner position of the stator 10 of the outer surface of the coil 12 A plurality of injection holes 22b for injecting the coolant 1 toward the surface are formed at predetermined intervals along the axial direction.

このような本実施形態に係るコイル冷却器具２０においては、前記供給マニホールド２１に供給口２１ａから冷却液１を送給すると、冷却液１が、各前記ノズル管２２へそれぞれ分配送給されて、各前記噴射孔２２ａ，２２ｂから、前記ステータ１０の軸方向に沿った前記コイル１２の外面の当該軸方向全長にわたって噴射される。 In the coil cooling device 20 according to the present embodiment, when the coolant 1 is supplied to the supply manifold 21 from the supply port 21a, the coolant 1 is delivered and supplied to each of the nozzle pipes 22. From each of the injection holes 22a and 22b, injection is performed over the entire length of the outer surface of the coil 12 along the axial direction of the stator 10 in the axial direction.

このとき、前記ステータ１０の軸心位置Ｃよりも上方に位置する前記コイル１２の外面には、前記ノズル管２２の前記噴射孔２２ａから当該ステータ１０の径方向外側位置へ向けて冷却液１が噴き掛けられることから、噴き掛けられた冷却液１が、自重によって、当該コイル１２の当該外面を当該径方向全長にわたって流下するようになる。 At this time, on the outer surface of the coil 12 located above the axial center position C of the stator 10, the coolant 1 is applied from the injection hole 22a of the nozzle tube 22 toward the radial outer position of the stator 10. Since it is sprayed, the sprayed coolant 1 flows down the outer surface of the coil 12 over the entire length in the radial direction due to its own weight.

他方、前記ステータ１０の軸心位置Ｃよりも下方に位置する前記コイル１２の外面には、前記ノズル管２２の前記噴射孔２２ｂから当該ステータ１０の径方向内側位置へ向けて冷却液１が噴き掛けられることから、噴き掛けられた冷却液１が、自重によって、当該コイル１２の当該外面を当該径方向全長にわたって流下するようになる。 On the other hand, the coolant 1 is sprayed from the injection hole 22b of the nozzle pipe 22 toward the radial inner position of the stator 10 on the outer surface of the coil 12 located below the axial center position C of the stator 10. Since it is hung, the sprayed coolant 1 flows down the outer surface of the coil 12 over the entire length in the radial direction due to its own weight.

このため、すべての隣り合う前記コイル１２の間の外面には、前記ステータ１０の軸方向及び径方向の全長にわたって冷却液１が流通するようになるので、前記コイル１２は、すべてが全体を冷却液１によって冷却される。 Therefore, the coolant 1 flows over the entire length of the stator 10 in the axial direction and the radial direction on the outer surface between all the adjacent coils 12, so that all of the coils 12 cool the whole. It is cooled by the liquid 1.

したがって、本実施形態に係るコイル冷却器具２０によれば、前記ステータ１０の前記コイル１２を効率よく冷却することができる。 Therefore, according to the coil cooling device 20 according to the present embodiment, the coil 12 of the stator 10 can be efficiently cooled.

また、前記ノズル管２２が、前記コイル１２の、前記ステータ１０の軸方向全長にわたって対向する長さを有していることから、当該コイル１２の当該軸方向全長にわたって冷却液１を噴き掛けることが確実にできるので、当該コイル１２を効率よく冷却することが容易にできる。 Further, since the nozzle tube 22 has a length of the coil 12 facing the entire axial length of the stator 10, the coolant 1 can be sprayed over the entire axial length of the coil 12. Since it can be reliably performed, the coil 12 can be easily cooled efficiently.

また、前記ノズル管２２が、すべての隣り合う前記コイル１２の間に挿入され、前記ステータ１０の軸心位置Ｃよりも上方に位置する前記コイル１２の外面に対向する前記ノズル管２２の前記噴射孔２２ａが、当該ステータ１０の径方向外側位置へ向けて冷却液１を噴射するように形成されると共に、前記ステータ１０の軸心位置Ｃよりも下方に位置する前記コイル１２の外面に対向する前記ノズル管２２の前記噴射孔２２ｂが、当該ステータ１０の径方向内側位置へ向けて冷却液１を噴射するように形成されていることから、すべての前記コイル１２の前記軸方向の外面に対して冷却液１を前記径方向全長にわたって噴き掛けることが確実にできるので、当該コイル１２を効率よく冷却することが容易にできる。 Further, the nozzle tube 22 is inserted between all the adjacent coils 12, and the injection of the nozzle tube 22 facing the outer surface of the coil 12 located above the axial center position C of the stator 10. The hole 22a is formed so as to inject the coolant 1 toward the radial outer position of the stator 10, and faces the outer surface of the coil 12 located below the axial position C of the stator 10. Since the injection hole 22b of the nozzle pipe 22 is formed so as to inject the coolant 1 toward the radial inner position of the stator 10, the outer surface of all the coils 12 in the axial direction is formed. Since the coolant 1 can be reliably sprayed over the entire length in the radial direction, the coil 12 can be easily cooled efficiently.

本発明に係る回転電機のステータのコイル冷却器具は、コイルを効率よく冷却することができるので、産業上、極めて有益に利用することができる。 Since the coil cooling device of the stator of the rotary electric machine according to the present invention can efficiently cool the coil, it can be used extremely beneficially in industry.

１ 冷却液
１０ ステータ
１１ ステータコア
１１ａ ヨーク部
１１ｂ ティース部
１２ コイル
２０ コイル冷却器具
２１ 供給マニホールド
２１ａ 供給口
２２ ノズル管
２２ａ，２２ｂ 噴射孔 1 Coolant 10 Stator 11 Stator core 11a Yoke part 11b Teeth part 12 Coil 20 Coil cooling equipment 21 Supply manifold 21a Supply port 22 Nozzle pipe 22a, 22b Injection hole

Claims (3)

環状をなすステータコアのヨーク部の内周に周方向に沿って複数突設されたティース部にコイルをそれぞれ装着されたステータの当該コイルを冷却する回転電機のステータのコイル冷却器具であって、
前記ステータの軸方向一端側に配設されて内部に冷却液を送給される供給マニホールドと、
前記供給マニホールドに基端側を連結されて隣り合う前記コイルの間に先端側を位置させるように挿入されると共に当該コイルへ向けて冷却液を噴射する噴射孔を周面に形成されて先端を閉塞されたノズル管と
を備えていることを特徴とする回転電機のステータのコイル冷却器具。 A coil cooling device for a stator of a rotary electric machine that cools the coil of a stator in which coils are mounted on teeth portions protruding along the circumferential direction on the inner circumference of the yoke portion of the annular stator core.
A supply manifold that is disposed on one end side in the axial direction of the stator and supplies coolant to the inside.
The base end side is connected to the supply manifold and inserted so as to position the tip end side between the adjacent coils, and an injection hole for injecting a coolant toward the coil is formed on the peripheral surface to form the tip end. A coil cooling device for the stator of a rotating electric machine, which is characterized by having a closed nozzle tube. 請求項１に記載の回転電機のステータのコイル冷却器具であって、
前記コイルの、前記ステータの軸方向全長にわたって対向する長さを前記ノズル管が有している
ことを特徴とする回転電機のステータのコイル冷却器具。 The coil cooling device for the stator of a rotary electric machine according to claim 1.
A coil cooling device for a stator of a rotary electric machine, characterized in that the nozzle tube has a length of the coil facing the entire axial length of the stator. 請求項１又は請求項２に記載の回転電機のステータのコイル冷却器具であって、
すべての隣り合う前記コイルの間に前記ノズル管が挿入され、
前記ステータの軸心位置よりも上方に位置する前記コイルの外面に対向する前記ノズル管の前記噴射孔が、当該ステータの径方向外側位置へ向けて冷却液を噴射するように形成されると共に、
前記ステータの軸心位置よりも下方に位置する前記コイルの外面に対向する前記ノズル管の前記噴射孔が、当該ステータの径方向内側位置へ向けて冷却液を噴射するように形成されている
ことを特徴とする回転電機のステータのコイル冷却器具。 The coil cooling device for the stator of the rotary electric machine according to claim 1 or 2.
The nozzle tube is inserted between all the adjacent coils
The injection hole of the nozzle tube facing the outer surface of the coil located above the axial position of the stator is formed so as to inject the coolant toward the radial outer position of the stator.
The injection hole of the nozzle tube facing the outer surface of the coil located below the axial position of the stator is formed so as to inject the coolant toward the radial inner position of the stator. A coil cooling device for the stator of a rotating electric machine.
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Publication number Priority date Publication date Assignee Title
JPWO2022195920A1 (en) * 2021-03-18 2022-09-22
KR20250027007A (en) * 2023-08-18 2025-02-25 주식회사 코렌스이엠 apparatus for cooling motor and motor comprising thereof

Citations (2)

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JP2005168265A (en) * 2003-12-05 2005-06-23 Nissan Motor Co Ltd Cooling structure of rotating electric machine
JP2019041487A (en) * 2017-08-25 2019-03-14 株式会社明電舎 Cooling structure of stator of rotary electric machine

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JP2005168265A (en) * 2003-12-05 2005-06-23 Nissan Motor Co Ltd Cooling structure of rotating electric machine
JP2019041487A (en) * 2017-08-25 2019-03-14 株式会社明電舎 Cooling structure of stator of rotary electric machine

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Publication number Priority date Publication date Assignee Title
JPWO2022195920A1 (en) * 2021-03-18 2022-09-22
WO2022195920A1 (en) * 2021-03-18 2022-09-22 日立Astemo株式会社 Dynamo-electrical machine
KR20250027007A (en) * 2023-08-18 2025-02-25 주식회사 코렌스이엠 apparatus for cooling motor and motor comprising thereof
KR102817196B1 (en) * 2023-08-18 2025-06-09 주식회사 코렌스이엠 apparatus for cooling motor and motor comprising thereof

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