JP2014042414A - Rotary electric machine - Google Patents

Rotary electric machine Download PDF

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JP2014042414A
JP2014042414A JP2012184009A JP2012184009A JP2014042414A JP 2014042414 A JP2014042414 A JP 2014042414A JP 2012184009 A JP2012184009 A JP 2012184009A JP 2012184009 A JP2012184009 A JP 2012184009A JP 2014042414 A JP2014042414 A JP 2014042414A
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pipe
cooling medium
oil
cooling
coil end
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JP5920108B2 (en
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Kei Sasaki
慶 佐々木
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Toyota Motor Corp
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Abstract

PROBLEM TO BE SOLVED: To cool a coil effectively.SOLUTION: A rotary electric machine is provided with: an oil bath pipe 64 for circulating a supplied cooling oil to an oil bath 48; a jet pipe 66 for jetting the supplied cooling oil to a coil end; and a pressure control valve 68 which causes the cooling oil from an oil supply pipe 62 to mainly circulate in the oil bath pipe 64 when a pressure of the cooling oil from the oil supply pipe 62 is equal to or higher than a predetermined pressure and causes the cooling oil from the oil supply pipe 62 to circulate to the jet pipe 66 when the pressure of the cooling oil from the oil supply pipe 62 is lower than the predetermined pressure. This structure effectively cools a coil even when the pressure of the cooling oil circulating in the oil supply pipe 62 is lower than the predetermined pressure.

Description

本発明は、回転電機装置に関し、詳しくは、ステータコアに巻回される巻線により構成されこのステータコアの軸方向外側に突出するコイルエンド部を有するコイルと内部に冷却媒体を流通可能な空間をもってコイルエンド部を覆うコイルエンドカバーとを有する回転電機と、回転電機へ冷却媒体を供給する冷却媒体供給系と、を備える回転電機装置に関する。   The present invention relates to a rotating electrical machine apparatus, and more specifically, a coil having a coil end portion that is formed by windings wound around a stator core and protrudes outward in the axial direction of the stator core, and a coil having a space through which a cooling medium can flow. The present invention relates to a rotating electrical machine apparatus including a rotating electrical machine having a coil end cover that covers an end portion, and a cooling medium supply system that supplies a cooling medium to the rotating electrical machine.

従来、この種の回転電機装置としては、ステータコアの端面から突出するコイルエンド部の周囲に内部が冷却油通路となるコイルエンドカバーを備えるものが提案されている(例えば、特許文献1参照)。この回転電機装置では、コイルエンドカバーに形成された給油口から供給した冷却油をコイルエンド部に流通させてコイルエンドカバーに形成された排油口から排出することにより、コイルを冷却している。   2. Description of the Related Art Conventionally, as this type of rotating electrical machine device, a device including a coil end cover whose inside is a cooling oil passage around a coil end portion protruding from an end surface of a stator core has been proposed (for example, see Patent Document 1). In this rotating electrical machine apparatus, the cooling oil supplied from the oil supply port formed in the coil end cover is circulated through the coil end part and discharged from the oil discharge port formed in the coil end cover, thereby cooling the coil. .

特開2010−124657号公報JP 2010-124657 A

上述の回転電機装置では、コイルエンドカバーの給油口から供給される冷却油の流量が低下すると、コイルエンド部を流通する冷却油の流量が低下してコイルを良好に冷却できなくなる場合がある。   In the above-described rotating electrical machine apparatus, when the flow rate of the cooling oil supplied from the oil supply port of the coil end cover decreases, the flow rate of the cooling oil flowing through the coil end portion may decrease, and the coil may not be cooled well.

本発明の回転電機は、コイルを良好に冷却することを主目的とする。   The main purpose of the rotating electrical machine of the present invention is to satisfactorily cool the coil.

本発明の回転電機は、上述の主目的を達成するために以下の手段を採った。   The rotating electrical machine of the present invention employs the following means in order to achieve the main object described above.

本発明の回転電機装置は、
ステータコアに巻回される巻線により構成され該ステータコアの軸方向外側に突出するコイルエンド部を有するコイルと内部に冷却媒体を流通可能な空間をもって前記コイルエンド部を覆うコイルエンドカバーとを有する回転電機と、前記回転電機へ冷却媒体を供給する冷却媒体供給系と、を備える回転電機装置において、
前記冷却媒体供給系は、
冷却媒体が流通する冷却媒体流通パイプと、
前記冷却媒体流通パイプの下流に配置され、前記冷却媒体流通パイプからの冷却媒体をコイルエンドカバーの内部の空間へ流通させる流路を形成するバスパイプと、
前記冷却媒体流通パイプの下流に配置され、前記冷却媒体流通パイプからの冷却媒体を前記コイルエンド部へ噴射する噴射パイプと、
前記冷却媒体流通パイプを流通する冷却媒体の流量が所定流量以上であるときには前記冷却媒体流通パイプからの冷却媒体の少なくとも一部を前記バスパイプに供給し、前記冷却媒体流通パイプを流通する冷却媒体の流量が前記所定流量未満であるときには前記供給された冷却媒体を前記噴射パイプに供給する供給切替機構と、
を有する
ことを要旨とする。
The rotating electrical machine apparatus of the present invention is
A rotation having a coil composed of a winding wound around a stator core and having a coil end portion protruding outward in the axial direction of the stator core and a coil end cover covering the coil end portion with a space through which a cooling medium can flow. In a rotating electrical machine apparatus comprising: an electrical machine; and a cooling medium supply system that supplies a cooling medium to the rotating electrical machine,
The cooling medium supply system is
A coolant distribution pipe through which the coolant flows; and
A bus pipe that is arranged downstream of the cooling medium flow pipe and forms a flow path for flowing the cooling medium from the cooling medium flow pipe to the space inside the coil end cover;
An injection pipe that is arranged downstream of the cooling medium circulation pipe and injects the cooling medium from the cooling medium circulation pipe to the coil end portion;
When the flow rate of the cooling medium flowing through the cooling medium flow pipe is equal to or higher than a predetermined flow rate, at least a part of the cooling medium from the cooling medium flow pipe is supplied to the bus pipe, and the cooling medium flows through the cooling medium flow pipe A supply switching mechanism for supplying the supplied cooling medium to the injection pipe when the flow rate is less than the predetermined flow rate;
The main point is to have

この本発明の回転電機装置では、冷却媒体流通パイプを流通する冷却媒体の流量が所定流量以上であるときには、供給切替機構により冷却媒体流通パイプからの冷却媒体の少なくとも一部がバスパイプに供給され、オイルバスに供給された冷却媒体はバスパイプからコイルエンドカバーの内部の空間へ流通する。これにより、バスパイプからの冷却媒体でコイルを冷却することができる。そして、冷却媒体流通パイプを流通する冷却媒体の流量が所定流量未満であるときには、供給切替機構により冷却媒体流通パイプからの冷却媒体を噴射パイプに供給され、冷却媒体を供給された噴射パイプはコイルエンド部へ冷却媒体を噴射する。冷却媒体流通パイプを流通する冷却媒体の流量が所定流量未満であっても噴射パイプで比較的速い流速の冷却媒体をコイルエンド部へ噴射することができるから、コイルエンド部を良好に冷却してコイルを良好に冷却することができる。   In the rotating electrical machine apparatus of the present invention, when the flow rate of the cooling medium flowing through the cooling medium flow pipe is equal to or higher than the predetermined flow rate, at least a part of the cooling medium from the cooling medium flow pipe is supplied to the bus pipe by the supply switching mechanism. The cooling medium supplied to the oil bath flows from the bus pipe to the space inside the coil end cover. Thereby, a coil can be cooled with the cooling medium from a bus pipe. When the flow rate of the cooling medium flowing through the cooling medium flow pipe is less than a predetermined flow rate, the cooling medium from the cooling medium flow pipe is supplied to the injection pipe by the supply switching mechanism, and the injection pipe supplied with the cooling medium is a coil. A cooling medium is sprayed to the end part. Even if the flow rate of the cooling medium flowing through the cooling medium flow pipe is less than the predetermined flow rate, the injection pipe can inject the cooling medium having a relatively high flow rate to the coil end part. The coil can be cooled well.

本発明の一実施例としての回転電機装置10の構成の概略を示す構成図である。It is a block diagram which shows the outline of a structure of the rotary electric machine apparatus 10 as one Example of this invention. ステータ40の構成の概略を示す構成図である。FIG. 3 is a configuration diagram showing an outline of a configuration of a stator 40. コイルエンドカバー50および冷却オイル供給系60の構成の概略を示す説明図である。FIG. 3 is an explanatory diagram showing an outline of the configuration of a coil end cover 50 and a cooling oil supply system 60. オイル供給パイプ62に供給される冷却オイルの流量とコイル46の放熱量との関係を示す説明図である。FIG. 6 is an explanatory diagram showing the relationship between the flow rate of cooling oil supplied to the oil supply pipe 62 and the heat radiation amount of the coil 46.

次に、本発明を実施するための形態を実施例を用いて説明する。   Next, the form for implementing this invention is demonstrated using an Example.

図1は本発明の一実施例としての回転電機装置10の構成の概略を示す構成図であり、図2は回転電機20のステータ40の要部の構成の概略を示す外観図であり、図3はコイルエンドカバー50および冷却オイル供給系60の構成の概略を示す説明図である。回転電機装置10は、図示するように、同期発電電動機として構成された回転電機20と、回転電機20を冷却する冷却オイル供給系60とを備える。   FIG. 1 is a configuration diagram showing an outline of the configuration of a rotating electrical machine apparatus 10 as an embodiment of the present invention, and FIG. 2 is an external view showing an outline of a configuration of a main part of a stator 40 of the rotating electrical machine 20. 3 is an explanatory diagram showing an outline of the configuration of the coil end cover 50 and the cooling oil supply system 60. As illustrated, the rotating electrical machine apparatus 10 includes a rotating electrical machine 20 configured as a synchronous generator motor, and a cooling oil supply system 60 that cools the rotating electrical machine 20.

回転電機20は、円環状の無方向性電磁鋼板を複数積層して構成されると共に内部に永久磁石(図示せず)を複数有し回転軸22と共に回転するロータ30と、ロータ30を回転駆動するステータ40とを備える。   The rotating electrical machine 20 is configured by laminating a plurality of annular non-oriented electrical steel sheets, has a plurality of permanent magnets (not shown) therein, and rotates with the rotary shaft 22, and the rotor 30 is driven to rotate. And a stator 40.

ステータ40は、図1,図2に示すように、円環状の無方向性電磁鋼板を積層してなるステータコア42と、ステータコア42の内周側に形成された複数のスロットに分布巻きなどにより巻回される巻線により構成されステータコア42の軸方向外側に突出するコイルエンド44を有するコイル46と、冷却オイルを流通可能な空間であるオイルバス48を内部にもった状態でコイルエンド44を覆うコイルエンドカバー50とを備える。コイルエンドカバー50には、図3に示すように、冷却オイルを導入する2つの導入口50a,50bと、冷却オイルを排出する排出口50cが設けられている。排出口50cは、冷却オイル供給系60に供給された冷却オイルの圧力が所定圧力以上であるときにオイルバス48内が液密状態となる排出力を有するよう形成されている。   1 and 2, the stator 40 is wound by distributed winding or the like in a stator core 42 formed by stacking annular non-oriented electrical steel sheets and a plurality of slots formed on the inner peripheral side of the stator core 42. The coil end 44 is covered in a state where the coil 46 having a coil end 44 which is constituted by a wound winding and protrudes outward in the axial direction of the stator core 42 and an oil bath 48 which is a space through which cooling oil can flow. And a coil end cover 50. As shown in FIG. 3, the coil end cover 50 is provided with two inlets 50a and 50b for introducing cooling oil and an outlet 50c for discharging cooling oil. The discharge port 50c is formed to have a discharge force that allows the oil bath 48 to be in a liquid-tight state when the pressure of the cooling oil supplied to the cooling oil supply system 60 is equal to or higher than a predetermined pressure.

冷却オイル供給系60は、図3に示すように、図示しないオイルポンプから供給された冷却オイルが流通するオイル供給パイプ62と、供給された冷却オイルをオイルバス48へ流通させるオイルバスパイプ64と、小径の孔形状に形成された冷却オイル供給口を少なくとも1つ有しオイルバスパイプ64より内径が小さく冷却オイル供給口からコイルエンド44に冷却オイルを高流速で噴射可能な噴射パイプ66と、オイル供給パイプ62を流通する冷却オイルの圧力に応じてオイル供給パイプ62とオイルバスパイプ64と噴射パイプ66との間の冷却オイルの流れを調整する圧力制御弁68とを備える。圧力制御弁68は、オイル供給パイプ62からの冷却オイルの圧力が所定圧力以上であるときにはオイル供給パイプ62からの冷却オイルを噴射パイプ66とオイルバスパイプ64とに流通させ、オイル供給パイプ62からの冷却オイルの圧力が所定圧力未満であるときにはオイル供給パイプ62からの冷却オイルを噴射パイプ66へ流通させる。   As shown in FIG. 3, the cooling oil supply system 60 includes an oil supply pipe 62 through which cooling oil supplied from an oil pump (not shown) flows, and an oil bus pipe 64 through which the supplied cooling oil flows through the oil bath 48. An injection pipe 66 having at least one cooling oil supply port formed in a small-diameter hole shape and having an inner diameter smaller than that of the oil bath pipe 64 and capable of injecting cooling oil from the cooling oil supply port to the coil end 44 at a high flow rate; A pressure control valve 68 for adjusting the flow of the cooling oil between the oil supply pipe 62, the oil bath pipe 64, and the injection pipe 66 according to the pressure of the cooling oil flowing through the oil supply pipe 62 is provided. The pressure control valve 68 circulates the cooling oil from the oil supply pipe 62 through the injection pipe 66 and the oil bath pipe 64 when the pressure of the cooling oil from the oil supply pipe 62 is equal to or higher than a predetermined pressure. When the pressure of the cooling oil is less than the predetermined pressure, the cooling oil from the oil supply pipe 62 is circulated to the injection pipe 66.

こうして構成された回転電機20では、オイル供給パイプ62を流通する冷却オイルの圧力が所定圧力以上、つまり、オイル供給パイプ62を流通する冷却オイルの流量が高いときには、圧力制御弁68がオイル供給パイプ62からの冷却オイルを噴射パイプ66とオイルバスパイプ64とに流通させる。実施例では、オイルバスパイプ64の内径が噴射パイプ66の内径より大きいから、供給パイプからの冷却オイルは主としてオイルバスパイプ64に供給される。コイルエンドカバー50の排出口50cはオイル供給パイプ62からの冷却オイルの圧力が所定圧力以上のときにオイルバス48内が液密状態となる排出力を有するよう形成されているから、オイル供給パイプ62からの冷却オイルの圧力が所定圧力以上のときにはオイルバス48内が液密状態となり、冷却オイルによるコイルエンド44の被覆面積を稼ぐことによってコイルエンド44を良好に冷却してコイル46を良好に冷却することができる。   In the rotary electric machine 20 configured as described above, when the pressure of the cooling oil flowing through the oil supply pipe 62 is equal to or higher than a predetermined pressure, that is, when the flow rate of the cooling oil flowing through the oil supply pipe 62 is high, the pressure control valve 68 is set to the oil supply pipe. The cooling oil from 62 is circulated through the injection pipe 66 and the oil bath pipe 64. In the embodiment, since the inner diameter of the oil bath pipe 64 is larger than the inner diameter of the injection pipe 66, the cooling oil from the supply pipe is mainly supplied to the oil bath pipe 64. The discharge port 50c of the coil end cover 50 is formed so as to have a discharge force that makes the oil bath 48 liquid-tight when the pressure of the cooling oil from the oil supply pipe 62 is equal to or higher than a predetermined pressure. When the pressure of the cooling oil from 62 is equal to or higher than a predetermined pressure, the inside of the oil bath 48 is in a liquid tight state, and the coil end 44 is cooled well by increasing the covering area of the coil end 44 by the cooling oil, so that the coil 46 is improved. Can be cooled.

また、オイル供給パイプ62を流通する冷却オイルの圧力が所定圧力未満、つまり、オイル供給パイプ62を流通する冷却オイルの流量が低いときには、圧力制御弁68がオイル供給パイプ62からの冷却オイルを噴射パイプ66に流通させ、噴射パイプ66から冷却オイルがコイルエンド44へ噴射される。これにより、コイルエンド44の表面に比較的高い流速の冷却オイルを流すことができ、コイルエンド44を良好に冷却してコイル46を良好に冷却することができる。   Further, when the pressure of the cooling oil flowing through the oil supply pipe 62 is less than a predetermined pressure, that is, when the flow rate of the cooling oil flowing through the oil supply pipe 62 is low, the pressure control valve 68 injects the cooling oil from the oil supply pipe 62. The cooling oil is injected into the coil end 44 from the injection pipe 66 through the pipe 66. Thereby, the cooling oil of a comparatively high flow velocity can be poured on the surface of the coil end 44, the coil end 44 can be cooled favorably, and the coil 46 can be favorably cooled.

図4は、オイル供給パイプ62に供給される冷却オイルの流量(オイル供給量)とコイル46の放熱量との関係を示す説明図である。図中、実線は冷却オイルを噴射パイプ66のみに流通させて噴射パイプ66でコイルエンド44に冷却オイルを噴射した場合の冷却オイルの流量とコイル46の放熱量との関係を示し、破線は冷却オイルをオイルバスパイプ64のみに流通させてオイルバス48内を液密状態にしたときの冷却オイルの流量とコイル46の放熱量との関係を示している。図示するように、冷却オイルの流量が低いときはオイルバス48に冷却オイルを噴射した場合のほうが放熱量が高く、冷却オイルの流量が高いときはオイルバス48内を液密状態とした場合のほうが放熱量が高い。したがって、実施例のように、オイル供給パイプ62を流通する冷却オイルの圧力が所定圧力以上であるときには主としてオイルバス48内を液密状態にしてコイルエンド44を冷却し、オイル供給パイプ62を流通する冷却オイルの圧力が所定圧力未満であるときにはコイルエンド44への噴射によりコイルエンド44を冷却することにより、コイル46の冷却を良好に行なうことができる。   FIG. 4 is an explanatory diagram showing the relationship between the flow rate (oil supply amount) of the cooling oil supplied to the oil supply pipe 62 and the heat dissipation amount of the coil 46. In the figure, the solid line indicates the relationship between the flow rate of the cooling oil and the heat radiation amount of the coil 46 when the cooling oil is circulated only through the injection pipe 66 and the cooling oil is injected into the coil end 44 by the injection pipe 66, and the broken line indicates the cooling. The relationship between the flow rate of the cooling oil and the heat radiation amount of the coil 46 when the oil is circulated only through the oil bath pipe 64 to make the oil bath 48 in a liquid-tight state is shown. As shown in the figure, when the cooling oil flow rate is low, the amount of heat radiation is higher when the cooling oil is injected into the oil bath 48, and when the cooling oil flow rate is high, the oil bath 48 is in a liquid-tight state. The heat dissipation is higher. Therefore, as in the embodiment, when the pressure of the cooling oil flowing through the oil supply pipe 62 is equal to or higher than a predetermined pressure, the coil end 44 is cooled mainly by making the oil bath 48 in a liquid-tight state, and flows through the oil supply pipe 62. When the pressure of the cooling oil to be performed is less than a predetermined pressure, the coil 46 can be cooled satisfactorily by cooling the coil end 44 by injection onto the coil end 44.

以上説明した実施例の回転電機装置10によれば、供給された冷却オイルをオイルバス48へ流通させるオイルバスパイプ64と、供給された冷却オイルをコイルエンド44へ噴射する噴射パイプ66と、オイル供給パイプ62からの冷却オイルの圧力が所定圧力未満であるときにはオイル供給パイプ62からの冷却オイルを噴射パイプ66へ流通させると共にオイル供給パイプ62からの冷却オイルの圧力が所定圧力以上であるときにはオイル供給パイプ62からの冷却オイルを噴射パイプ66とオイルバスパイプ64とに流通させる圧力制御弁68とを設けることにより、コイル46の冷却を良好に行なうことができる。   According to the rotating electrical machine apparatus 10 of the embodiment described above, the oil bath pipe 64 that distributes the supplied cooling oil to the oil bath 48, the injection pipe 66 that injects the supplied cooling oil to the coil end 44, and the oil When the pressure of the cooling oil from the supply pipe 62 is less than the predetermined pressure, the cooling oil from the oil supply pipe 62 is circulated to the injection pipe 66, and when the pressure of the cooling oil from the oil supply pipe 62 is equal to or higher than the predetermined pressure, the oil is supplied. By providing the pressure control valve 68 for circulating the cooling oil from the supply pipe 62 to the injection pipe 66 and the oil bath pipe 64, the coil 46 can be cooled satisfactorily.

実施例の回転電機装置10では、オイル供給パイプ62とオイルバスパイプ64と噴射パイプ66との間に圧力制御弁68を配置するものとしたが、オイル供給パイプ62とオイルバスパイプ64と噴射パイプ66との間には、オイル供給パイプ62を流通する冷却オイルの流量が所定流量未満であるときには噴射パイプ66に冷却オイルを供給し、オイル供給パイプ62を流通する冷却オイルの流量が所定流量以上であるときには主としてオイルバスパイプ64に冷却オイルを供給するように流路を切り替える機構を設ければよく、例えば、電気信号により制御されるソレノイドバルブ等の方向制御弁を設けるものとしてもよい。この場合、オイル供給パイプ62を流通する冷却オイルの流量や冷却オイルの流路を反映するパラメータに応じて方向制御弁を制御して、オイル供給パイプ62とオイルバスパイプ64と噴射パイプ66との間の流路を切り替えるものとすればよい。冷却オイルの流量を反映するパラメータとしては、例えば、冷却オイルを供給する図示しないオイルポンプから冷却オイルの流量が回転電機20の回転数に応じて変化する場合にはロータの回転数を用いるものとしてもよいし、こうした回転電機20がエンジンと共に車両に搭載されエンジンの回転数に応じて冷却オイルの流量が変化する場合にはエンジンの回転数などを用いればよく、こうしたパラメータを複数組み合わせるものとしてもよい。   In the rotating electrical machine apparatus 10 of the embodiment, the pressure control valve 68 is disposed between the oil supply pipe 62, the oil bath pipe 64, and the injection pipe 66. However, the oil supply pipe 62, the oil bath pipe 64, and the injection pipe are arranged. 66, when the flow rate of the cooling oil flowing through the oil supply pipe 62 is less than a predetermined flow rate, the cooling oil is supplied to the injection pipe 66, and the flow rate of the cooling oil flowing through the oil supply pipe 62 is equal to or higher than the predetermined flow rate. In this case, a mechanism for switching the flow path so as to mainly supply the cooling oil to the oil bath pipe 64 may be provided. For example, a direction control valve such as a solenoid valve controlled by an electric signal may be provided. In this case, the directional control valve is controlled according to a parameter reflecting the flow rate of the cooling oil flowing through the oil supply pipe 62 and the flow path of the cooling oil, and the oil supply pipe 62, the oil bath pipe 64, and the injection pipe 66 are controlled. The flow path between them may be switched. As a parameter that reflects the flow rate of the cooling oil, for example, when the flow rate of the cooling oil from an oil pump (not shown) that supplies the cooling oil changes in accordance with the rotational speed of the rotating electrical machine 20, the rotational speed of the rotor is used. Alternatively, when the rotating electrical machine 20 is mounted on a vehicle together with the engine and the flow rate of the cooling oil changes according to the engine speed, the engine speed may be used, and a combination of these parameters may be used. Good.

実施例の回転電機装置10では、圧力制御弁68は、オイル供給パイプ62からの冷却オイルの圧力が所定圧力以上であるときにはオイル供給パイプ62からの冷却オイルを噴射パイプ66とオイルバスパイプ64とに流通させるものとしたが、オイル供給パイプ62からの冷却オイルをオイルバスパイプ64のみに流通させるものとしてもよい。   In the rotating electrical machine apparatus 10 according to the embodiment, the pressure control valve 68 causes the cooling oil from the oil supply pipe 62 to flow through the injection pipe 66 and the oil bath pipe 64 when the pressure of the cooling oil from the oil supply pipe 62 is equal to or higher than a predetermined pressure. However, the cooling oil from the oil supply pipe 62 may be circulated only to the oil bath pipe 64.

実施例の回転電機装置10では、冷却オイルを用いて回転電機20を冷却するものとしたが、回転電機20の冷却媒体としてはこうした冷却オイルに限定されるものではなく、回転電機20を冷却可能であれば如何なる冷却媒体を用いても構わない。   In the rotating electrical machine apparatus 10 of the embodiment, the rotating electrical machine 20 is cooled using the cooling oil, but the cooling medium of the rotating electrical machine 20 is not limited to such cooling oil, and the rotating electrical machine 20 can be cooled. Any cooling medium may be used as long as it is.

実施例の主要な要素と課題を解決するための手段の欄に記載した発明の主要な要素との対応関係について説明する。実施例では、ステータコア42が「ステータコア」に相当し、コイル46が「コイル」に相当し、コイルエンドカバー50が「コイルエンドカバー」に相当し、回転電機20が「回転電機」に相当し、冷却オイル供給系60が「冷却媒体供給系」に相当し、オイル供給パイプ62が「冷却媒体流通パイプ」に相当し、オイルバスパイプ64が「バスパイプ」に相当し、噴射パイプ66が「噴射パイプ」に相当し、圧力制御弁68が「供給切替機構」に相当する。   The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the stator core 42 corresponds to the “stator core”, the coil 46 corresponds to the “coil”, the coil end cover 50 corresponds to the “coil end cover”, the rotating electrical machine 20 corresponds to the “rotating electrical machine”, The cooling oil supply system 60 corresponds to a “cooling medium supply system”, the oil supply pipe 62 corresponds to a “cooling medium distribution pipe”, the oil bath pipe 64 corresponds to a “bus pipe”, and the injection pipe 66 corresponds to “injection”. The pressure control valve 68 corresponds to a “supply switching mechanism”.

なお、実施例の主要な要素と課題を解決するための手段の欄に記載した発明の主要な要素との対応関係は、実施例が課題を解決するための手段の欄に記載した発明を実施するための形態を具体的に説明するための一例であることから、課題を解決するための手段の欄に記載した発明の要素を限定するものではない。即ち、課題を解決するための手段の欄に記載した発明についての解釈はその欄の記載に基づいて行なわれるべきものであり、実施例は課題を解決するための手段の欄に記載した発明の具体的な一例に過ぎないものである。   The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is the same as that of the embodiment described in the column of means for solving the problem. Therefore, the elements of the invention described in the column of means for solving the problems are not limited. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description of the column, and the examples are those of the invention described in the column of means for solving the problems. It is only a specific example.

以上、本発明を実施するための形態について実施例を用いて説明したが、本発明はこうした実施例に何等限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。   As mentioned above, although the form for implementing this invention was demonstrated using the Example, this invention is not limited at all to such an Example, In the range which does not deviate from the summary of this invention, it is with various forms. Of course, it can be implemented.

本発明は、回転電機装置の製造産業などに利用可能である。   The present invention can be used in the manufacturing industry of rotating electrical machines.

10 回転電機装置、20 回転電機、22 回転軸、30 ロータ、40 ステータ、42 ステータコア、44 コイルエンド、46 コイル、48 オイルバス、50 コイルエンドカバー、50a,50b 導入口、50c 排出口、60 冷却オイル供給系、62 オイル供給パイプ、64 オイルバスパイプ、66 噴射パイプ、68 圧力制御弁。   DESCRIPTION OF SYMBOLS 10 Rotating electrical machinery apparatus, 20 Rotating electrical machinery, 22 Rotating shaft, 30 Rotor, 40 Stator, 42 Stator core, 44 Coil end, 46 Coil, 48 Oil bath, 50 Coil end cover, 50a, 50b Inlet port, 50c Discharge port, 60 Cooling Oil supply system, 62 oil supply pipe, 64 oil bath pipe, 66 injection pipe, 68 pressure control valve.

Claims (1)

ステータコアに巻回される巻線により構成され該ステータコアの軸方向外側に突出するコイルエンド部を有するコイルと内部に冷却媒体を流通可能な空間をもって前記コイルエンド部を覆うコイルエンドカバーとを有する回転電機と、前記回転電機へ冷却媒体を供給する冷却媒体供給系と、を備える回転電機装置において、
前記冷却媒体供給系は、
冷却媒体が流通する冷却媒体流通パイプと、
前記冷却媒体流通パイプの下流に配置され、前記冷却媒体流通パイプからの冷却媒体をコイルエンドカバーの内部の空間へ流通させる流路を形成するバスパイプと、
前記冷却媒体流通パイプの下流に配置され、前記冷却媒体流通パイプからの冷却媒体を前記コイルエンド部へ噴射する噴射パイプと、
前記冷却媒体流通パイプを流通する冷却媒体の流量が所定流量以上であるときには前記冷却媒体流通パイプからの冷却媒体の少なくとも一部を前記バスパイプに供給し、前記冷却媒体流通パイプを流通する冷却媒体の流量が前記所定流量未満であるときには前記供給された冷却媒体を前記噴射パイプに供給する供給切替機構と、
を有する
回転電機装置。
A rotation having a coil composed of a winding wound around a stator core and having a coil end portion protruding outward in the axial direction of the stator core and a coil end cover covering the coil end portion with a space through which a cooling medium can flow. In a rotating electrical machine apparatus comprising: an electrical machine; and a cooling medium supply system that supplies a cooling medium to the rotating electrical machine,
The cooling medium supply system is
A coolant distribution pipe through which the coolant flows; and
A bus pipe that is arranged downstream of the cooling medium flow pipe and forms a flow path for flowing the cooling medium from the cooling medium flow pipe to the space inside the coil end cover;
An injection pipe that is arranged downstream of the cooling medium circulation pipe and injects the cooling medium from the cooling medium circulation pipe to the coil end portion;
When the flow rate of the cooling medium flowing through the cooling medium flow pipe is equal to or higher than a predetermined flow rate, at least a part of the cooling medium from the cooling medium flow pipe is supplied to the bus pipe, and the cooling medium flows through the cooling medium flow pipe A supply switching mechanism for supplying the supplied cooling medium to the injection pipe when the flow rate is less than the predetermined flow rate;
A rotating electrical machine apparatus.
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JPWO2015181889A1 (en) * 2014-05-27 2017-04-20 三菱電機株式会社 Rotating electric machine
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