JPH0747973Y2 - Rotating electric machine cooling device - Google Patents
Rotating electric machine cooling deviceInfo
- Publication number
- JPH0747973Y2 JPH0747973Y2 JP1990119070U JP11907090U JPH0747973Y2 JP H0747973 Y2 JPH0747973 Y2 JP H0747973Y2 JP 1990119070 U JP1990119070 U JP 1990119070U JP 11907090 U JP11907090 U JP 11907090U JP H0747973 Y2 JPH0747973 Y2 JP H0747973Y2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- stator
- stator core
- peripheral surface
- core
- 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.)
- Expired - Lifetime
Links
Landscapes
- Motor Or Generator Cooling System (AREA)
Description
本考案は、モータ等の回転電機の冷却装置に関し、とく
に固定子を冷却液により冷却するものに関する。The present invention relates to a cooling device for a rotating electric machine such as a motor, and more particularly to a device for cooling a stator with a cooling liquid.
従来、モータのフレームの内側に設けられた固定子を冷
却する冷却装置としては、例えば第２図に示すように、
フレームＡの内周に螺旋状の冷却液溝Ｂを設け、フレー
ムの外周の一方端に開口する流入口Ｃと、他方端に開口
する流出口Ｄとを設け、冷却液溝Ｂの内面と固定子鉄心
Ｅの冷却液溝Ｂに対面する外周面に、モールド樹脂など
のコーティング材を塗布して、冷却液を流入口Ｃから冷
却液溝Ｂに通し、流出口Ｄから外部に排出するようにし
たものがある（例えば、実開平3-70056号）。また、モ
ータのステータの外周にケースを設け、ケースは外側シ
リンダケースと内側シリンダケースとサイドケースから
構成され、内側シリンダケースの外周面に螺旋状の冷却
用流路を設けたものが開示されている（例えば、特開平
1-274636号）。Conventionally, as a cooling device for cooling a stator provided inside a frame of a motor, for example, as shown in FIG.
A spiral cooling liquid groove B is provided on the inner periphery of the frame A, an inflow port C opening at one end of the outer periphery of the frame and an outflow port D opening at the other end are provided, and fixed to the inner surface of the cooling liquid groove B. A coating material such as a mold resin is applied to the outer peripheral surface of the child core E facing the cooling liquid groove B, and the cooling liquid is passed from the inflow port C to the cooling liquid groove B and discharged from the outflow port D to the outside. There are some (for example, Sankaihei 3-70056). Further, there is disclosed a case in which a case is provided on the outer circumference of a stator of a motor, and the case is composed of an outer cylinder case, an inner cylinder case, and a side case, and a spiral cooling flow path is provided on the outer peripheral surface of the inner cylinder case. (For example,
1-274636).
ところが、上記前者の従来例では、冷却液溝内側に塗布
したコーティング材の厚さが薄いため冷却液の摩擦など
によりコーティング材が破れたり、固定子鉄心が積層さ
れているため外周面の面粗さが粗くなり、僅かな隙間が
できることがある。そのため、固定子鉄心とフレームと
の接触面に沿って固定子鉄心の端面に冷却液がしみ出
し、コイルエンド部から固定子コイル内に冷却液が入り
込み、固定子コイルを劣化させるという欠点があった。
また、上記後者の従来例では、冷却用流路を形成するた
めの部材の機械加工工数が多くなるという問題があっ
た。 本考案は、固定子鉄心の外周面と端面からの冷却液の漏
れを防ぎ、固定コイルの劣化を防ぐと共に、冷却液の流
路を形成する部材の機械加工工数を低減することを目的
とするものである。However, in the former conventional example described above, the coating material applied to the inside of the coolant groove is thin, so that the coating material is broken due to friction of the coolant or the stator core is laminated, so that the surface roughness of the outer peripheral surface is rough. The roughness may become rough and a slight gap may be created. Therefore, there is a drawback in that the cooling liquid seeps out to the end surface of the stator core along the contact surface between the stator core and the frame, and the cooling liquid enters the stator coil from the coil end portion to deteriorate the stator coil. It was
Further, in the latter conventional example, there is a problem that the number of man-hours for machining the member for forming the cooling channel increases. An object of the present invention is to prevent the leakage of the cooling liquid from the outer peripheral surface and the end surface of the stator core, to prevent the deterioration of the fixed coil, and to reduce the machining man-hours of the member forming the cooling liquid flow path. It is a thing.
本考案は、固定子コイルを備えた積層鉄心からなる固定
子鉄心と、前記固定子鉄心の外周面に接触して設けられ
たフレームと、前記フレームの前記固定子鉄心に接触す
る内周面に設けた螺旋状の冷却液溝とを備えた回転電機
の冷却装置において、前記固定子鉄心の外周面と前記フ
レームの内周面との間に収縮テープによって樹脂皮膜を
形成し、前記固定子鉄心と前記フレームとを回り止めネ
ジによって固定し、前記フレームの内周と前記固定子鉄
心の端面と前記固定子コイルのコイルエンドとの間にモ
ールド樹脂を充填したものである。The present invention provides a stator core comprising a laminated core provided with a stator coil, a frame provided in contact with the outer peripheral surface of the stator core, and an inner peripheral surface of the frame in contact with the stator core. In a cooling device for a rotating electric machine provided with a spiral cooling liquid groove provided, a resin film is formed between the outer peripheral surface of the stator core and the inner peripheral surface of the frame with shrink tape, and the stator core The frame and the frame are fixed with a rotation stop screw, and a mold resin is filled between the inner periphery of the frame, the end surface of the stator core and the coil end of the stator coil.
固定子鉄心の外周面とフレームの内周面との間に収縮テ
ープによって形成された樹脂皮膜が、固定子鉄心３の外
周面の積層によってできる凹凸に埋め込まれ、固定子鉄
心の外周面とフレームの内周面は密着するので、流入口
から送られた冷却液が固定子鉄心とフレームの間から漏
れて固定子コイルのコイルエンドに入り込むことはな
い。The resin film formed by the shrink tape between the outer peripheral surface of the stator core and the inner peripheral surface of the frame is embedded in the unevenness formed by the lamination of the outer peripheral surface of the stator core 3, and the outer peripheral surface of the stator core and the frame. Since the inner peripheral surfaces of the above are in close contact with each other, the cooling liquid sent from the inflow port does not leak from between the stator core and the frame and enter the coil end of the stator coil.
本考案を、図に示す実施例について説明する。 第１図は本考案の実施例を示す側断面図で、回転軸１に
固定された回転子２の外周に対向して、積層鉄心からな
る固定子鉄心３が設けられている。固定子鉄心３は固定
子コイル31を備え、固定子鉄心３の外周には、収縮テー
プ32が巻かれ、誘導加熱などの方法により固定子鉄心３
を加熱して収縮テープ32を収縮させ、固定子鉄心３の外
周に密着させて樹脂皮膜を形成してある。固定子鉄心３
の外周に樹脂皮膜を介してフレーム４が嵌合される。と
ころで、収縮テープ32の外形とフレーム４の内径に大き
な差がない場合、フレーム４を収縮テープ32の外周に嵌
合するときに、フレーム４によって収縮テープ32が損傷
する恐れがある。それで、フレーム４が円滑に収縮テー
プ32の外周に嵌合されるように、フレーム４と収縮テー
プ32の外周との間に僅かな隙間があくようにしておく。
したがって、フレーム４と固定子鉄心３との間でトルク
を伝達するために、フレーム４の外周から固定子鉄心３
の外周に向かって回り止めネジ33がねじ込まれている。
フレーム４の内周の固定子鉄心３の外周に接触する面に
は、螺旋状の冷却液溝41が設けられ、冷却液溝41の両端
に冷却液の流入口42および流出口43が設けられて、フレ
ーム４の外周に開口している。冷却液溝41には、コーテ
ィング材を流入口および流出口から流し込み、加圧注入
して過熱硬化させ、冷却液溝の内面にコーティング膜を
形成してある。 フレーム４の内周と、固定子鉄心３の端面と、固定子コ
イル31のコイルエンドとの間にはモールド樹脂５を充填
し、固定子コイル31の発生熱をフレーム４に伝達し易く
してある。また、充填したモールド樹脂は、回り止めネ
ジ33を締めつけることによって生じるフレーム４と収縮
テープ32との間の隙間を塞ぐので、固定子鉄心３の外周
からコイルエンド部への冷却液の漏れを防ぐことが出来
る。 したがって、固定子鉄心３の外周面とフレーム４の内周
面との間に収縮テープによって形成された樹脂皮膜が、
固定子鉄心３の外周面の積層によってできる凹凸に埋め
込まれ、固定子鉄心３の外周面とフレーム４の内周面は
密着するので、流入口42から送られた冷却液が固定子鉄
心３とフレーム４の間から漏れて固定子コイル31のコイ
ルエンドに入り込むことはない。 また、固定子鉄心とフレームを回り止ネジによって固定
してあるので、固定子鉄心とフレームの分解作業が容易
である。The present invention will be described with reference to the embodiments shown in the drawings. FIG. 1 is a side sectional view showing an embodiment of the present invention, in which a stator core 3 made of a laminated core is provided facing the outer circumference of a rotor 2 fixed to a rotary shaft 1. The stator core 3 includes a stator coil 31, a shrink tape 32 is wound around the outer periphery of the stator core 3, and the stator core 3 is formed by a method such as induction heating.
Is heated to shrink the shrink tape 32, and is brought into close contact with the outer periphery of the stator core 3 to form a resin film. Stator core 3
The frame 4 is fitted to the outer periphery of the resin via a resin film. By the way, if there is no great difference between the outer shape of the shrink tape 32 and the inner diameter of the frame 4, the shrink tape 32 may be damaged by the frame 4 when the frame 4 is fitted to the outer circumference of the shrink tape 32. Therefore, a slight gap is left between the frame 4 and the outer circumference of the shrink tape 32 so that the frame 4 can be smoothly fitted to the outer circumference of the shrink tape 32.
Therefore, in order to transmit the torque between the frame 4 and the stator core 3, the stator core 3 is rotated from the outer periphery of the frame 4.
The non-rotating screw 33 is screwed in toward the outer periphery of the.
A spiral cooling liquid groove 41 is provided on the surface of the inner periphery of the frame 4 that contacts the outer periphery of the stator core 3, and cooling liquid inlets 42 and outlets 43 are provided at both ends of the cooling liquid groove 41. The frame 4 has an opening on the outer circumference. In the cooling liquid groove 41, a coating material is poured from the inflow port and the outflow port, pressurized and injected to be overheated to form a coating film on the inner surface of the cooling liquid groove. A mold resin 5 is filled between the inner circumference of the frame 4, the end surface of the stator core 3 and the coil end of the stator coil 31 to facilitate transfer of heat generated by the stator coil 31 to the frame 4. is there. Further, the filled mold resin closes the gap between the frame 4 and the shrink tape 32 generated by tightening the rotation stop screw 33, so that the leakage of the cooling liquid from the outer circumference of the stator core 3 to the coil end portion is prevented. You can Therefore, the resin film formed by the shrink tape between the outer peripheral surface of the stator core 3 and the inner peripheral surface of the frame 4 is
Since the outer peripheral surface of the stator core 3 and the inner peripheral surface of the frame 4 are buried in the irregularities formed by stacking the outer peripheral surface of the stator core 3, the cooling liquid sent from the inflow port 42 and the inner peripheral surface of the frame 4 adhere to each other. It does not leak from between the frames 4 and enter the coil end of the stator coil 31. Moreover, since the stator core and the frame are fixed by the set screw, disassembly work of the stator core and the frame is easy.
以上述べたように、本考案によれば、フレームと固定子
鉄心との間に設けた冷却溝に冷却液を流して固定子を冷
却する場合、冷却液が固定子鉄心とフレームとの間から
漏れることがなく、品質の安定した作業性のよい回転電
機の冷却装置を提供できる効果がある。As described above, according to the present invention, when the cooling liquid is caused to flow through the cooling groove provided between the frame and the stator core to cool the stator, the cooling liquid flows from between the stator core and the frame. There is an effect that it is possible to provide a cooling device for a rotating electric machine which does not leak and has stable quality and good workability.
第１図は本考案の実施例を示す側断面図、第２図は従来
例を示す側断面図である。 １……回転軸、２……回転子 ３……固定子鉄心、31……固定子コイル 32……収縮テープ、33……回り止めネジ ４……フレーム、41……冷却液溝 42……流入口、43……流出口 ５……モールド樹脂FIG. 1 is a side sectional view showing an embodiment of the present invention, and FIG. 2 is a side sectional view showing a conventional example. 1 ... Rotary axis, 2 ... Rotor 3 ... Stator core, 31 ... Stator coil 32 ... Shrink tape, 33 ... Rotating screw 4 ... Frame, 41 ... Coolant groove 42 ... Inlet, 43 ... Outlet 5 ... Mold resin
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−274636（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-274636 (JP, A)
Claims (1)
定子鉄心と、前記固定子鉄心の外周面に接触して設けら
れたフレームと、前記フレームの前記固定子鉄心に接触
する内周面に設けた螺旋状の冷却液溝とを備えた回転電
機の冷却装置において、前記固定子鉄心の外周面と前記
フレームの内周面との間に収縮テープによって樹脂皮膜
を形成し、前記固定子鉄心と前記フレームとを回り止め
ネジによって固定し、前記フレームの内周と前記固定子
鉄心の端面と前記固定子コイルのコイルエンドとの間に
モールド樹脂を充填したことを特徴とする回転電機の冷
却装置。1. A stator core made of a laminated core provided with a stator coil, a frame provided in contact with an outer peripheral surface of the stator core, and an inner peripheral surface of the frame in contact with the stator core. In a cooling device for a rotating electric machine having a spiral cooling liquid groove provided in, a resin film is formed between the outer peripheral surface of the stator core and the inner peripheral surface of the frame with shrink tape, and the stator An iron core and the frame are fixed with a rotation stop screw, and a mold resin is filled between the inner circumference of the frame, the end surface of the stator iron core, and the coil end of the stator coil. Cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990119070U JPH0747973Y2 (en) | 1990-11-13 | 1990-11-13 | Rotating electric machine cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990119070U JPH0747973Y2 (en) | 1990-11-13 | 1990-11-13 | Rotating electric machine cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476157U JPH0476157U (en) | 1992-07-02 |
| JPH0747973Y2 true JPH0747973Y2 (en) | 1995-11-01 |
Family
ID=31867051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990119070U Expired - Lifetime JPH0747973Y2 (en) | 1990-11-13 | 1990-11-13 | Rotating electric machine cooling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747973Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019068705A (en) * | 2017-10-05 | 2019-04-25 | 本田技研工業株式会社 | Cooling structure of stator core and rotary electric machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5565745B2 (en) * | 2009-07-24 | 2014-08-06 | スズキ株式会社 | Motor housing structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8807663D0 (en) * | 1988-03-31 | 1988-05-05 | Aisin Seiki | Dynamoelectric machines |
-
1990
- 1990-11-13 JP JP1990119070U patent/JPH0747973Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019068705A (en) * | 2017-10-05 | 2019-04-25 | 本田技研工業株式会社 | Cooling structure of stator core and rotary electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0476157U (en) | 1992-07-02 |
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