JPH0567181U - Induction motor rotor - Google Patents
Induction motor rotorInfo
- Publication number
- JPH0567181U JPH0567181U JP013019U JP1301992U JPH0567181U JP H0567181 U JPH0567181 U JP H0567181U JP 013019 U JP013019 U JP 013019U JP 1301992 U JP1301992 U JP 1301992U JP H0567181 U JPH0567181 U JP H0567181U
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- iron core
- induction motor
- laminated iron
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000006698 induction Effects 0.000 title claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Landscapes
- Induction Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
(57)【要約】
【目的】車両用主電動機に関し、特に電動機軸受部の温
度上昇を低減するものである。
【構成】回転子軸に積層鉄心を有し、この積層鉄心の外
周部にロータバーとそのロータバーの両端に円筒状短絡
環を有する誘導電動機の回転子において、この電動機の
回転子鉄心と回転子軸間に断熱材を設けたものである。
(57) [Abstract] [Purpose] A main electric motor for a vehicle, particularly to reduce a temperature rise of a motor bearing portion. A rotor of an induction motor having a laminated iron core on a rotor shaft, and a rotor bar on the outer peripheral portion of the laminated iron core and cylindrical short-circuit rings on both ends of the rotor bar. A heat insulating material is provided between them.
Description
【０００１】[0001]
本考案は、誘導電動機の回転子の冷却構造の改良に関するものである。 The present invention relates to improvement of a cooling structure for a rotor of an induction motor.
【０００２】[0002]
鉄道車両用主電動機として交流かご形回転子を持つ誘導電動機が近年多く使用 されてきている。 従来の回転子構造は、図２に示すように、けい素鋼板を積層して回転子軸１に 装着され、複数個のスロットを有する回転子鉄心２と、断面がこのスロットと同 形状で、銅または黄銅を引抜いて製作されるロータバー３と、このロータバー３ の両端に銀ロー付にて取り付けられる銅製の短絡環４と、回転子鉄心２を両側か ら押圧する鉄心押え５とを有している。さらに回転子軸１の両端には軸受６によ り固定子枠（図示せず）に取付けられてる。 Induction motors with AC cage rotors have been widely used in recent years as main motors for railway vehicles. As shown in FIG. 2, the conventional rotor structure has a rotor core 2 having a plurality of slots mounted on a rotor shaft 1 by stacking silicon steel plates, and a cross-section having the same shape as this slot. It has a rotor bar 3 made by pulling out copper or brass, a copper short-circuit ring 4 attached to both ends of this rotor bar 3 with silver braze, and an iron core retainer 5 for pressing the rotor core 2 from both sides. ing. Further, bearings 6 are attached to both ends of the rotor shaft 1 to a stator frame (not shown).
【０００３】[0003]
かご形回転子は図２に示す様に絶縁物が無く、従って温度上昇限度値は規定さ れていない。ただし主な熱発生源となるロータバー３より発生する熱量の大部分 Q1は回転子鉄心に伝導され、それらの表面を通る通風により主電動機外部に排出 されるが、残り熱量Q2は回転子軸１を通り、両端に取付けられた軸受部の温度を 上昇させる。 軸受部にはその潤滑のためにグリースが使用されていて、熱的条件により寿命 に影響することから軸受部の温度は例えば95℃以下とする必要があった。 従って、この軸受部の温度上昇の制約から、回転子の温度上昇を低く抑えると いう制約があって、構造を大きくしたり、電動機内部の風量を多くする等の不利 な点があった。 As shown in Fig. 2, the squirrel-cage rotor has no insulator, and therefore the temperature rise limit value is not specified. However, most of the heat quantity Q1 generated from the rotor bar 3, which is the main heat source, is conducted to the rotor iron core and is discharged to the outside of the main motor by the air passing through those surfaces, but the remaining heat quantity Q2 is the remaining heat quantity Q2. To raise the temperature of the bearings attached to both ends. Grease is used in the bearing to lubricate the bearing, and the life of the bearing is affected by thermal conditions, so the temperature of the bearing had to be 95 ° C or lower. Therefore, due to the restriction of the temperature rise of the bearing portion, there is a restriction of keeping the temperature rise of the rotor low, and there are disadvantages such as enlargement of the structure and increase of the air volume inside the electric motor.
【０００４】[0004]
本考案は主な発生熱源であるロータバーより回転子鉄心を通して回転子軸に伝 導される熱量を、回転子鉄心と回転子軸間に熱伝導率の小さな断熱材を介在させ る事により、回転子鉄心部の温度が軸受に与える影響を軽減させる事により回転 子の温度上昇を低く抑える事ができる。 In the present invention, the heat quantity transferred to the rotor shaft from the rotor bar, which is the main heat source, is transmitted to the rotor shaft by interposing a heat insulating material with a small thermal conductivity between the rotor core and the rotor shaft. By reducing the effect of the temperature of the child core on the bearing, the temperature rise of the rotor can be kept low.
【０００５】[0005]
前記構成により、回転子の主な熱発生源となるロータバーより回転子鉄心を伝 わって回転子軸に伝わる熱量を両者間に構成される断熱材によって減少させるこ とにより、軸受の温度上昇を抑えることが可能となる。 With the above structure, the heat amount transmitted from the rotor bar, which is the main heat generation source of the rotor, to the rotor shaft through the rotor core is reduced by the heat insulating material between the two, thereby increasing the bearing temperature. It becomes possible to suppress.
【０００６】[0006]
本考案の一実施例を、図１により説明する。 図１は本考案の一実施例を示す簡略図であり、図１においては、回転子軸１と 回転子鉄心２の間に熱伝導率の低い断熱材７を圧入している。このことによって 、回転子鉄心２から回転子軸１に伝わる熱量を軽減させる事ができる。 One embodiment of the present invention will be described with reference to FIG. 1 is a simplified diagram showing an embodiment of the present invention. In FIG. 1, a heat insulating material 7 having a low thermal conductivity is press-fitted between a rotor shaft 1 and a rotor core 2. As a result, the amount of heat transferred from the rotor core 2 to the rotor shaft 1 can be reduced.
【０００７】[0007]
以上述べたように本考案によれば、回転子軸と回転子鉄心間に断熱材を配置す る事により、鉄心より軸に伝わる熱量を減らす事ができるので、通風量を増やす ためにファンを大きくする等により回転子温度上昇値を低く抑える事なく、軸受 部温度上昇値を限度内とすることができる。従って従来に対し電動機の小型・軽 量化を図る事も可能となる。 As described above, according to the present invention, by disposing the heat insulating material between the rotor shaft and the rotor iron core, the amount of heat transferred from the iron core to the shaft can be reduced. The bearing temperature rise value can be kept within the limit without keeping the rotor temperature rise value low by increasing it. Therefore, it is possible to reduce the size and weight of the electric motor as compared with the conventional one.
【０００８】[0008]
【図１】図１は本考案の一実施例を示す回転子構造簡略
図である。FIG. 1 is a simplified view of a rotor structure showing an embodiment of the present invention.
【図２】図２は従来の回転子構造を示す簡略図である。FIG. 2 is a simplified diagram showing a conventional rotor structure.
【０００９】[0009]
１ 回転子軸 ２ 回転子鉄心 ３ ロータバー ４ 端絡環 ５ 鉄心押え ６ 軸受 ７ 断熱材 1 rotor shaft 2 rotor iron core 3 rotor bar 4 end ring 5 iron core retainer 6 bearing 7 heat insulating material
Claims (1)
心の外周部にロータバーとそのロータバーの両端に円筒
状短絡環を有する誘導電動機の回転子において、前記回
転子軸とその軸に圧入される回転子鉄心部分に熱伝導率
の小さい断熱材を介在させて構成した事を特徴とする誘
導電動機の回転子。1. A rotor of an induction motor having a laminated iron core on a rotor shaft, and a rotor bar on the outer peripheral portion of the laminated iron core and cylindrical short-circuit rings at both ends of the rotor bar. A rotor for an induction motor, which is characterized in that a heat insulating material having a small thermal conductivity is interposed between a press-fitted rotor core portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP013019U JPH0567181U (en) | 1992-02-06 | 1992-02-06 | Induction motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP013019U JPH0567181U (en) | 1992-02-06 | 1992-02-06 | Induction motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0567181U true JPH0567181U (en) | 1993-09-03 |
Family
ID=11821440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP013019U Pending JPH0567181U (en) | 1992-02-06 | 1992-02-06 | Induction motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0567181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100871944B1 (en) * | 2001-05-15 | 2008-12-08 | 제너럴 일렉트릭 캄파니 | High temperature super-conducting rotor coil support and coil support method |
| JP2015159647A (en) * | 2014-02-21 | 2015-09-03 | トヨタ自動車株式会社 | Motor for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04343638A (en) * | 1991-05-22 | 1992-11-30 | Mitsubishi Heavy Ind Ltd | Cooling device of motor for main spindle |
-
1992
- 1992-02-06 JP JP013019U patent/JPH0567181U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04343638A (en) * | 1991-05-22 | 1992-11-30 | Mitsubishi Heavy Ind Ltd | Cooling device of motor for main spindle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100871944B1 (en) * | 2001-05-15 | 2008-12-08 | 제너럴 일렉트릭 캄파니 | High temperature super-conducting rotor coil support and coil support method |
| JP2015159647A (en) * | 2014-02-21 | 2015-09-03 | トヨタ自動車株式会社 | Motor for vehicle |
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