JP2006042543A - Induction motor - Google Patents

Induction motor Download PDF

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Publication number
JP2006042543A
JP2006042543A JP2004221339A JP2004221339A JP2006042543A JP 2006042543 A JP2006042543 A JP 2006042543A JP 2004221339 A JP2004221339 A JP 2004221339A JP 2004221339 A JP2004221339 A JP 2004221339A JP 2006042543 A JP2006042543 A JP 2006042543A
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induction motor
rotor
air
holes
blade
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Akinori Nakamoto
昭則 中本
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2004221339A priority Critical patent/JP2006042543A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the following problem: in an induction motor in which an end ring portion of a rotor core consisting of a laminated electromagnetic steel plate is constructed out of a plurality of protrusion portions, a temperature rise in windings of a rotor and a stator becomes high because the air in the induction motor cannot be circulated by only the protrusion portions of the end ring portion. <P>SOLUTION: This induction motor includes a plurality of through-holes 5 in the rotor 2 consisting of the laminated electromagnetic steel plate, and a plurality of blade pieces 6 and 8 near the through-holes 5. As a result, the air in the induction motor can be circulated, thus constructing the induction motor with a simple structure, at a low-cost, and with improved cooling performance. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、空気調和機等に用いられる誘導電動機の回転子の放熱構造に関するものである。   The present invention relates to a heat dissipation structure for a rotor of an induction motor used in an air conditioner or the like.

従来、この種の誘導電動機の回転子は、図８に示すように積層電磁鋼板からなる回転子１０１のエンドリング部１０２を複数突起部１０３で構成されていた（例えば、特許文献１参照）。
特開２０００−６００４５号公報 Conventionally, in this type of induction motor rotor, as shown in FIG. 8, the end ring portion 102 of the rotor 101 made of laminated electromagnetic steel sheets is composed of a plurality of protrusions 103 (see, for example, Patent Document 1).
JP 2000-60045 A

しかしながら、前記従来の構成では、エンドリング部１０２の突起部１０３だけでは、誘導電動機内の空気を循環できないため、回転子及び固定子の巻線の温度上昇が高くなるという課題を有していた。   However, in the conventional configuration, the air in the induction motor cannot be circulated only by the protrusion 103 of the end ring portion 102, and thus there is a problem that the temperature rise of the rotor and stator windings is increased. .

本発明は、前記従来の課題を解決するもので、積層電磁鋼板からなる回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有することにより、誘導電動機内の空気を循環させることができ、簡易な構成で安価、かつ冷却性能を向上させた誘導電動機を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and a rotor made of laminated electromagnetic steel sheets has a plurality of through holes on one side or both sides, and has a plurality of blade pieces in the vicinity of the through holes. An object of the present invention is to provide an induction motor that can circulate air in an electric motor, is inexpensive with a simple configuration, and has improved cooling performance.

前記従来の課題を解決するために、本発明の誘導電動機は、ベアリングを介して回転自由に保持された積層電磁鋼板からなる回転子と、前記ベアリングを保持するブラケットと、前記ブラケットにより挟み込まれた固定子を有する誘導電動機であって、前記回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とする。また、羽根片の取付け位置及び取付け角度を変化させることにより、より放熱効果が向上する。   In order to solve the conventional problems, an induction motor according to the present invention is sandwiched between a rotor made of laminated electromagnetic steel plates that are freely rotatably supported via a bearing, a bracket that holds the bearing, and the bracket. An induction motor having a stator, wherein the rotor has a plurality of through holes on one side or both sides, and a plurality of blade pieces in the vicinity of the through holes. Moreover, the heat dissipation effect is further improved by changing the attachment position and the attachment angle of the blade pieces.

本発明の誘導電動機の回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とすることにより、複数の貫通穴と羽根片により誘導電動機内の空気が羽根片により貫通穴を通り循環することができる。空気が循環することにより、回転子及び固定子の巻線の温度を下げることができる。また、羽根片の取付け位置及び取付け角度を変化させることにより、より循環効率が高まり放熱効果が向上する。   The rotor of the induction motor according to the present invention has a plurality of through holes on one side or both sides, and a plurality of blade pieces in the vicinity of the through holes, so that the inside of the induction motor is formed by the plurality of through holes and blade pieces. Air can be circulated through the through hole by the blade piece. As the air circulates, the temperature of the rotor and stator windings can be lowered. Further, by changing the attachment position and the attachment angle of the blade pieces, the circulation efficiency is further increased and the heat dissipation effect is improved.

第１の発明は、ベアリングを介して回転自由に保持された積層電磁鋼板からなる回転子と、前記ベアリングを保持するブラケットと、前記ブラケットにより挟み込まれた固定子を有する誘導電動機であって、前記回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とする。複数の貫通穴と羽根片により誘導電動機内の空気が羽根片により貫通穴を通り循環することができる。空気が循環することにより、回転子及び固定子の巻線の温度を下げることができる。   1st invention is the induction motor which has the rotor which consists of a laminated electromagnetic steel plate hold | maintained freely via a bearing, the bracket holding the said bearing, and the stator pinched | interposed by the said bracket, The rotor has a plurality of through holes on one side or both sides, and a plurality of blade pieces in the vicinity of the through holes. The air in the induction motor can be circulated through the through hole by the blade piece by the plurality of through holes and the blade piece. As the air circulates, the temperature of the rotor and stator windings can be lowered.

第２の発明は、回転子の回転方向に対し貫通穴の前後に羽根片を取り付けた構造とすることにより空気の循環効率が高まり、より回転子及び固定子の巻線の温度を下げることができる。   According to the second aspect of the present invention, the air circulation efficiency is increased by adopting a structure in which the blade pieces are attached to the front and rear of the through hole with respect to the rotation direction of the rotor, thereby further reducing the temperature of the rotor and stator windings. it can.

第３の発明は、回転子の回転方向に対し羽根片の角度を変化させた構造とすることによりより空気の循環効率が高まり、より回転子及び固定子の巻線の温度を下げることができる。   According to the third aspect of the present invention, the air circulation efficiency is further increased by adopting a structure in which the angle of the blade piece is changed with respect to the rotation direction of the rotor, and the temperature of the rotor and stator windings can be further decreased. .

第４の発明は、羽根片を耐熱樹脂等により構成することにより、形状を自由にかえられることができ、より空気の循環効率を高め、回転子及び固定子の巻線の温度を下げることができる。   According to the fourth aspect of the present invention, the shape of the blade piece can be freely changed by configuring the blade piece with heat-resistant resin, etc., and the air circulation efficiency can be further improved, and the temperature of the rotor and stator windings can be reduced. it can.

第５の発明は、積層された電磁鋼板の両側面により羽根片を構成することにより安価な構成にて羽根片を作成することができる。   According to the fifth aspect of the present invention, the blade piece can be formed with an inexpensive configuration by forming the blade piece from both side surfaces of the laminated electromagnetic steel sheets.

第６の発明は、上記１〜５の発明の誘導電動機を、室外機に使用した空気調和機である。空気調和機の室外機は、冷房運転時熱交換器により高温となり送風ファンにより誘導電動機に高温の風があたり、誘導電動機の内部温度が上昇する。誘導電動機の回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とすることにより誘導電動機内の空気が羽根片により貫通穴を通り循環することができる。空気が循環することにより、回転子及び固定子の巻線の温度を下げることができる。   6th invention is the air conditioner which used the induction motor of said invention of 1-5 for the outdoor unit. The outdoor unit of the air conditioner becomes high temperature by the heat exchanger during cooling operation, and high temperature wind hits the induction motor by the blower fan, and the internal temperature of the induction motor increases. The induction motor rotor has a plurality of through holes on one side or both sides, and a plurality of blade pieces in the vicinity of the through holes, whereby air in the induction motor circulates through the through holes by the blade pieces. be able to. As the air circulates, the temperature of the rotor and stator windings can be lowered.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の実施の形態１における誘導電動機の部分断面図、図２は回転子の断面図、図３は回転子の端面図を示す。これらの図において、ベアリング１をして回転自由に保持された積層電磁鋼板からなる回転子２、前記ベアリング１を保持するブラケットＡ３、Ｂ４、前記ブラケットＡ３、Ｂ４より挟み込まれた固定子の巻線７を有する誘導電動機であって、前記回転子２にΦ１０ｍｍの貫通穴５を４個有し、貫通穴５近傍に高さ８ｍｍ、幅１０ｍｍの羽根片６有する。回転子２回転により誘導電動機内の空気が羽根片６に当り、貫通穴５通りぬけ空気を循環し、空気が循環することにより、回転子２及び固定子の巻線７の温度を下げることができる。 (Embodiment 1)
1 is a partial cross-sectional view of an induction motor according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view of a rotor, and FIG. 3 is an end view of the rotor. In these drawings, a rotor 2 made of a laminated electromagnetic steel plate that is rotatably held by a bearing 1, a bracket A3, B4 that holds the bearing 1, and a winding of a stator that is sandwiched between the brackets A3, B4. 7, the rotor 2 has four through holes 5 having a diameter of 10 mm, and a blade piece 6 having a height of 8 mm and a width of 10 mm in the vicinity of the through hole 5. By rotating the rotor 2 times, the air in the induction motor hits the blade piece 6 and circulates through the through hole 5, and the air circulates, thereby lowering the temperature of the rotor 2 and the winding 7 of the stator. it can.

（実施の形態２）
図４は本発明の実施の形態２の断面図を示す。図４において、空気の流れにより羽根片Ａ６ａ、Ｂ８ｂの取付け位置を変える。例えば、出力軸側から反出力軸側へ空気が流れ、回転方向は、出力軸より見た回転方向が右廻りとすると、出力軸側の羽根片Ａ６ａは貫通穴５ａに対し下側とする。また、反出力軸側の羽根片Ｂ８ｂは出力軸から見て上側とする。回転子２ａが回転することにより、空気が羽根片６ａに当り貫通穴を通し出力軸側から、反出力軸側へ流れやすくなる。羽根片Ａ６ａ、Ｂ８ｂを空気の流れにより上下別々に取り付けることにより空気の循環効率が高めることができる。循環効率が高まることにより回転子２ａ及び固定子の巻線７の温度を下げることができる。 (Embodiment 2)
FIG. 4 shows a cross-sectional view of the second embodiment of the present invention. In FIG. 4, the attachment positions of the blade pieces A6a and B8b are changed by the flow of air. For example, if air flows from the output shaft side to the non-output shaft side and the rotation direction is clockwise when viewed from the output shaft, the blade piece A6a on the output shaft side is located below the through hole 5a. Further, the blade piece B8b on the side opposite to the output shaft is on the upper side when viewed from the output shaft. As the rotor 2a rotates, air easily strikes the blade piece 6a, passes through the through hole, and easily flows from the output shaft side to the counter-output shaft side. The air circulation efficiency can be increased by attaching the blade pieces A6a and B8b separately according to the flow of air. By increasing the circulation efficiency, the temperature of the rotor 2a and the stator winding 7 can be lowered.

（実施の形態３）
図５は本発明の実施の形態３の断面図を示す。図５において、前記実態の形態１と羽根片に角度において相違し、その他の点では実施の形態１と同様である。実施の形態３の羽根片Ａ６ｂ、Ｂ８ｂを回転方向に対し４５°傾けた構造とする。羽根片Ａ６ｂ、Ｂ８ｂを傾けることにより、より空気の循環効率が高めることができる。循環効率が高まることにより回転子２ｂ及び固定子の巻線７の温度を下げることができる。 (Embodiment 3)
FIG. 5 shows a sectional view of the third embodiment of the present invention. In FIG. 5, the actual form 1 is different from the blade piece in angle, and the other points are the same as those in the first embodiment. The blade pieces A6b and B8b of Embodiment 3 are structured to be inclined by 45 ° with respect to the rotation direction. By inclining the blade pieces A6b and B8b, the air circulation efficiency can be further increased. By increasing the circulation efficiency, the temperature of the rotor 2b and the stator winding 7 can be lowered.

（実施の形態４）
図６は本発明の実施形態４の断面図を示す。図６において、羽根片Ａ６ｃ、Ｂ８ｃを耐熱樹脂により成形することに、半円状の形状にすることができる。耐熱樹脂により羽根片の形状を自由にかえられることができ、より空気の循環効率を高めることができる。循環効率が高まることにより回転子２ｃ及び固定子の巻線７の温度を下げることができる。 (Embodiment 4)
FIG. 6 shows a cross-sectional view of Embodiment 4 of the present invention. In FIG. 6, by forming the blade pieces A6c and B8c with heat-resistant resin, a semicircular shape can be obtained. The shape of the blade piece can be freely changed by the heat resistant resin, and the air circulation efficiency can be further improved. By increasing the circulation efficiency, the temperature of the rotor 2c and the stator winding 7 can be lowered.

（実施の形態５）
図７は本発明の実施の形態５の断面図を示す。図７において、積層された電磁鋼板９ｄの両側面の一枚を金型等により羽根片Ａ６ｄ、Ｂ８ｄを構成する。電磁鋼板９ｄを使用することに安価な構成にて羽根片Ａ６ｄ、Ｂ８ｄを作成することができる。 (Embodiment 5)
FIG. 7 shows a sectional view of the fifth embodiment of the present invention. In FIG. 7, blade pieces A6d and B8d are formed by using a mold or the like on one side surface of the laminated electromagnetic steel sheets 9d. The blade pieces A6d and B8d can be formed with an inexpensive structure by using the electromagnetic steel sheet 9d.

（実施の形態６）
上記実施の形態１〜５の誘導電動機は空気調和機の室外機に使用されるのが好ましい。空気調和機の室外機は、冷房運転時熱交換器により高温となり送風ファンにより誘導電動機に風があたり、誘導電動機の内部温度が上昇する。誘導電動機の回転子に片側もしくは、両側に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とすることにより誘導電動機内の空気が羽根片により貫通穴を通り循環することができる。空気が循環することにより、回転子及び固定子の巻線の温度を下げることができる。本発明の誘導電動機を空気調和機用室外機に使用すると本発明の効果がより顕著に発現する。 (Embodiment 6)
The induction motors of Embodiments 1 to 5 are preferably used for outdoor units of air conditioners. The outdoor unit of the air conditioner becomes high temperature by the heat exchanger during cooling operation, and the wind blows on the induction motor by the blower fan, and the internal temperature of the induction motor rises. The induction motor rotor has a plurality of through holes on one side or both sides, and a plurality of blade pieces in the vicinity of the through holes, whereby air in the induction motor circulates through the through holes by the blade pieces. be able to. As the air circulates, the temperature of the rotor and stator windings can be lowered. When the induction motor of the present invention is used for an outdoor unit for an air conditioner, the effects of the present invention are more remarkably exhibited.

以上のように、本発明にかかる誘導電動機の回転子に複数の貫通穴を有し、貫通穴の近傍に複数の羽根片を有する構造とすることにより、複数の貫通穴と羽根片により誘導電動機内の空気が羽根片により貫通穴を通り循環することができる。空気が循環することにより、回転子及び固定子の巻線の温度を下げることができる。また、羽根片の取付け位置及び取付け角度を変化させることにより、より循環効率が高まり放熱効果が向上するため、空気調和機の室外機用モ−タ等の用途に有用である。   As described above, the induction motor according to the present invention has a structure having a plurality of through holes and a plurality of blade pieces in the vicinity of the through holes, whereby the induction motor is constituted by the plurality of through holes and the blade pieces. The air inside can be circulated through the through hole by the blade piece. As the air circulates, the temperature of the rotor and stator windings can be lowered. Further, by changing the attachment position and the attachment angle of the blade pieces, the circulation efficiency is further improved and the heat dissipation effect is improved. Therefore, it is useful for applications such as outdoor motors for air conditioners.

本発明の実施の形態１における誘導電動機の部分断面図Partial sectional view of the induction motor according to Embodiment 1 of the present invention. 本発明の実施の形態１における回転子の断面図Sectional drawing of the rotor in Embodiment 1 of this invention 本発明の実施の形態１における回転子の端面図End view of the rotor according to the first embodiment of the present invention 本発明の実施の形態２における回転子の断面図Sectional drawing of the rotor in Embodiment 2 of this invention 本発明の実施の形態３における回転子の断面図Sectional drawing of the rotor in Embodiment 3 of this invention 本発明の実施の形態４における回転子の端面図End view of rotor in embodiment 4 of the present invention 本発明の実施の形態５における回転子の断面図Sectional drawing of the rotor in Embodiment 5 of this invention 従来の誘導電動機の部分断面図Partial sectional view of a conventional induction motor

符号の説明Explanation of symbols

１ ベアリング
２ 回転子
３ ブラケットＡ
４ ブラケットＢ
５ 貫通穴
６ 羽根片Ａ
７ 巻線（固定子）
８ 羽根片Ｂ
９ｄ 電磁鋼板 1 Bearing 2 Rotor 3 Bracket A
4 Bracket B
5 Through hole 6 Blade A
7 Winding (stator)
8 Feather B
9d electrical steel sheet

Claims (6)

ベアリングを介して回転自由に保持された積層電磁鋼板からなる回転子と、前記ベアリングを保持するブラケットと、前記ブラケットにより挟み込まれた固定子を有する誘導電動機であって、前記回転子に複数の貫通穴を有し、貫通穴の近傍に片側もしくは、両側に複数の羽根片を有する構造としたことを特徴とする誘導電動機。 An induction motor having a rotor made of laminated electromagnetic steel plates that are rotatably held via a bearing, a bracket that holds the bearing, and a stator that is sandwiched by the bracket, and a plurality of penetrating through the rotor An induction motor comprising a hole and a structure having a plurality of blade pieces on one side or both sides in the vicinity of the through hole. 回転子の回転方向に対し貫通穴の前後に羽根片を取り付けた構造とする請求項１記載の誘導電動機。 The induction motor according to claim 1, wherein a blade piece is attached to the front and rear of the through hole with respect to the rotation direction of the rotor. 回転子の回転方向に対し羽根片の角度を変化させた構造とする請求項１に記載の誘導電動機。 The induction motor according to claim 1, wherein the angle of the blade piece is changed with respect to the rotation direction of the rotor. 羽根片を耐熱性の樹脂により構成した請求項１に記載の誘導電動機。 The induction motor according to claim 1, wherein the blade piece is made of a heat-resistant resin. 羽根片を積層電磁鋼板により構成した請求項１に記載の誘導電動機。 The induction motor according to claim 1, wherein the blade pieces are made of laminated electromagnetic steel sheets. 請求項１〜５のいずれか１項の誘導電動機を用いた空気調和機。 An air conditioner using the induction motor according to any one of claims 1 to 5.
JP2004221339A 2004-07-29 2004-07-29 Induction motor Pending JP2006042543A (en)

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Cited By (6)

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WO2010115539A1 (en) 2009-04-08 2010-10-14 Sew-Eurodrive Gmbh & Co. Kg Electric motor
JP2012200067A (en) * 2011-03-22 2012-10-18 Hitachi Industrial Equipment Systems Co Ltd Rotary electric machine
US20140152138A1 (en) * 2012-12-05 2014-06-05 Denso Corporation Rotor and rotating electric machine having the same
JP2014217166A (en) * 2013-04-25 2014-11-17 アイシン精機株式会社 Superconducting rotary machine and cooling method thereof
JP2014241691A (en) * 2013-06-12 2014-12-25 パナソニック株式会社 Electric motor and electric device
DE102018208706A1 (en) * 2018-06-04 2019-12-05 Audi Ag System for cooling an electric machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010115539A1 (en) 2009-04-08 2010-10-14 Sew-Eurodrive Gmbh & Co. Kg Electric motor
JP2012200067A (en) * 2011-03-22 2012-10-18 Hitachi Industrial Equipment Systems Co Ltd Rotary electric machine
US20140152138A1 (en) * 2012-12-05 2014-06-05 Denso Corporation Rotor and rotating electric machine having the same
US9653953B2 (en) * 2012-12-05 2017-05-16 Denso Corporation Rotor with blade portions and rotating electric machine having the same
JP2014217166A (en) * 2013-04-25 2014-11-17 アイシン精機株式会社 Superconducting rotary machine and cooling method thereof
JP2014241691A (en) * 2013-06-12 2014-12-25 パナソニック株式会社 Electric motor and electric device
DE102018208706A1 (en) * 2018-06-04 2019-12-05 Audi Ag System for cooling an electric machine
CN110556973A (en) * 2018-06-04 2019-12-10 奥迪股份公司 System for cooling an electric machine
EP3579392A1 (en) * 2018-06-04 2019-12-11 Audi AG System for cooling an electrical machine
US10992195B2 (en) 2018-06-04 2021-04-27 Audi Ag System for cooling an electric machine

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