JP2005124266A - Cooling structure of motor - Google Patents

Cooling structure of motor Download PDF

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JP2005124266A
JP2005124266A JP2003354017A JP2003354017A JP2005124266A JP 2005124266 A JP2005124266 A JP 2005124266A JP 2003354017 A JP2003354017 A JP 2003354017A JP 2003354017 A JP2003354017 A JP 2003354017A JP 2005124266 A JP2005124266 A JP 2005124266A
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load side
stator
side bracket
attached
frame
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Hideji Ishii
秀司 石井
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Yaskawa Electric Corp
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Yaskawa Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling structure of a motor exhibiting high cooling performance of a stator core while preventing the effect of heat transmission from a load side bracket to a machine tool and radiation from the frame. <P>SOLUTION: The cooling structure of a motor comprises: a frame 5 fixed to the outer circumference of a stator 6 such that a plurality of vents 9 for passing cooling air penetrate the frame along the axial direction; a counter-load side bracket 10 fixed to the counter-load side of the frame 5 and provided with vents 14 communicating with the vents 9; a hollow casing 12 fixed to the counter-load side bracket 10; and a cooling fan 13 fixed to the inside of the casing 12. The structure is further provided with a ventilation passage 8 covering the outer circumference of the stator 6 and communicating with the load side of the vents 9, and a guide 4 having one end fixed to a load side bracket 3 and the other end provided with an opening 4B for sucking cooling air from the counter-load side. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、電動機の冷却構造に関する。   The present invention relates to a cooling structure for an electric motor.

一般に工作機械の主軸などの駆動用に空冷式電動機が用いられている。
従来の空冷式電動機の冷却については、負荷側となる出力軸と反対側に強制空冷用の冷却用ファンを取付け、ステータコアもしくはステータコアの外周に設けたフレームに直接通風孔を設けて冷却通路とし、冷却風を冷却ファン側からステータコアを経由して、出力軸側に通すようになっている
このような構成のもとで、モータステータの熱を吸収した風がモータ出力軸端に取付けた工作機械のコラムや送り軸に吹き付けられると、熱膨張による工作機械の部材の寸法変化によって加工精度に異常を生じさせる危険がある。そこで、冷却用ファンの送風方向を工作機械と反対側となる反負荷側方向にする構成が改善案として提案されている（例えば、特許文献１参照）。
図４は従来の電動機の側断面図であって、フレーム内部に通風孔を設けた例を示したものである。なお、図中の矢印は冷却風の流れを示す。
１は出力軸、２、１１は軸受、３は負荷側ブラケット、３Ａはフランジ部、５はフレーム、６はステータ、７はロータ、９、１４は通風孔、１０は反負荷側ブラケット、１２はケーシング、１３は冷却ファンである。このような構成で、冷却ファン１３を回転させると、ケーシング１２内で負圧が生じ、冷却風が出力軸１の負荷側に取付けた図示しない工作機械側から冷却用ファン１３側に流れる際に、ステータ６のコア、巻線で発生した熱を吸収し、工作機械（図示せず）のコラムや送り軸側への伝熱を防止している（例えば、特許文献１参照）。
特開２００３−３２９５１号公報（第２頁、第２図） In general, an air-cooled electric motor is used for driving a spindle of a machine tool.
For cooling conventional air-cooled electric motors, a cooling fan for forced air cooling is attached to the opposite side of the output shaft on the load side, and a direct ventilation hole is provided in the stator core or a frame provided on the outer periphery of the stator core to form a cooling passage. Cooling air is passed from the cooling fan side through the stator core to the output shaft side. With such a configuration, the machine tool in which the air that absorbed the heat of the motor stator is attached to the end of the motor output shaft If it is sprayed on the column or the feed shaft, there is a risk of causing an abnormality in machining accuracy due to a change in the dimensions of the machine tool member due to thermal expansion. In view of this, a configuration in which the cooling fan is blown in the direction opposite to the machine tool in the opposite load side has been proposed as an improvement plan (see, for example, Patent Document 1).
FIG. 4 is a side sectional view of a conventional electric motor, and shows an example in which ventilation holes are provided in the frame. In addition, the arrow in a figure shows the flow of cooling air.
1 is an output shaft, 2 and 11 are bearings, 3 is a load side bracket, 3A is a flange portion, 5 is a frame, 6 is a stator, 7 is a rotor, 9 and 14 are ventilation holes, 10 is an anti-load side bracket, and 12 is The casing 13 is a cooling fan. When the cooling fan 13 is rotated in such a configuration, a negative pressure is generated in the casing 12, and the cooling air flows from the machine tool side (not shown) attached to the load side of the output shaft 1 to the cooling fan 13 side. The heat generated by the core and windings of the stator 6 is absorbed to prevent heat transfer to the column or feed shaft side of a machine tool (not shown) (see, for example, Patent Document 1).
JP 2003-32951 A (2nd page, FIG. 2)

ところが、図４に示す構成では、冷却風が發熱源であるステータ６の外周に取付けられたフレーム５内の通風孔９を通過するだけでは、電動機出力の大きさが変わるとステータ６の冷却能力が不十分であるという問題があった。
また、フレーム５の外皮はステータ６の放熱により温度が高くなるため、例えばフレーム５の外皮付近に配置される工作機械（図示せず）の部材に輻射熱を与え、それによる影響から部材の寸法変化、加工精度に異常を生じさせるという問題があった。
また、従来技術は、電動機の負荷側ブラケット３の主軸取付用のフランジ部３Ａを強制的に冷却していないため、該フランジ部３Ａの温度上昇に伴って、その他の電動機取付け部材に熱膨張による寸法変化、加工精度に異常を生じさせるという問題があった。
本発明は上記問題を解決するためになされたものであり、ステータコアの冷却能力が高く、負荷側ブラケットから工作機械への熱伝達、フレームからの輻射による影響を防ぐことができる電動機の冷却装置を提供することを目的とする。 However, in the configuration shown in FIG. 4, the cooling capacity of the stator 6 is changed when the size of the motor output changes only by passing the cooling air through the ventilation holes 9 in the frame 5 attached to the outer periphery of the stator 6 that is the heat source. There was a problem that was insufficient.
In addition, since the temperature of the outer skin of the frame 5 increases due to the heat radiation of the stator 6, for example, radiant heat is applied to a member of a machine tool (not shown) arranged near the outer skin of the frame 5, and the dimensional change of the member due to the influence thereof There was a problem of causing an abnormality in processing accuracy.
Further, in the prior art, the flange portion 3A for attaching the main shaft of the load side bracket 3 of the electric motor is not forcibly cooled. Therefore, as the temperature of the flange portion 3A rises, other motor attachment members are thermally expanded. There was a problem of causing an abnormality in dimensional change and processing accuracy.
The present invention has been made in order to solve the above-described problem, and provides a motor cooling device that has a high cooling capacity of the stator core and can prevent the effects of heat transfer from the load side bracket to the machine tool and radiation from the frame. The purpose is to provide.

上記問題を解決するために、請求項１の発明は、円筒状のステータの外周に取付けられ、冷却風を通す複数個の第１の通風孔を軸方向に沿って貫通するように設けたフレームと、
前記フレームの反負荷側に取りつけられ、前記第１の通風孔と連通した第２の通風孔を設けた反負荷側ブラケットと、前記反負荷側ブラケットに取りつけた中空状のケーシングと、前記ケーシングの内側に取りつけた冷却ファンとを備えた電動機の冷却装置において、前記フレームの外周を覆うように設けられ、かつ、前記第１通風孔の負荷側と連通する通風路を有すると共に、一方端が負荷側ブラケットに取付られ、他方端が反負荷側から冷却風を吸入するための開口部を有するガイドを設けたことを特徴としている。
また、請求項２の発明は、請求項１記載の電動機の冷却装置において、前記ガイドの負荷側端部を、前記負荷側ブラケットのフランジ部に取付けたことを特徴としている。
また、請求項３の発明は、冷却風を通す複数個の第１の通風孔を軸方向に沿って貫通するように設けた円筒状のステータと、前記ステータの反負荷側に取りつけられ、前記第１の通風孔と連通した第２の通風孔を設けた反負荷側ブラケットと、前記反負荷側ブラケットに取りつけた中空状のケーシングと、前記ケーシングの内側に取りつけた冷却ファンとを備えた電動機の冷却装置において、前記ステータの外周を覆うように設けられ、かつ、前記第１通風孔の負荷側と連通する通風路を有すると共に、一方端が負荷側ブラケットに取付られ、他方端が反負荷側から冷却風を吸入するための開口部を有するガイドを設けたことを特徴としている。
また、請求項４の発明は、請求項３記載の電動機の冷却装置において、前記ガイドの負荷側端部を、前記負荷側ブラケットのフランジ部に取付けたことを特徴としている。 In order to solve the above-mentioned problem, the invention of claim 1 is a frame that is attached to the outer periphery of a cylindrical stator and is provided so as to penetrate a plurality of first ventilation holes through which cooling air passes along the axial direction. When,
An anti-load bracket attached to the anti-load side of the frame and provided with a second vent hole communicating with the first vent hole; a hollow casing attached to the anti-load side bracket; An electric motor cooling device comprising a cooling fan mounted on the inside, provided to cover the outer periphery of the frame and having a ventilation path communicating with the load side of the first ventilation hole, with one end at the load A guide is attached to the side bracket, and the other end has an opening for sucking cooling air from the anti-load side.
According to a second aspect of the present invention, in the motor cooling device according to the first aspect, the load side end portion of the guide is attached to the flange portion of the load side bracket.
According to a third aspect of the present invention, there is provided a cylindrical stator provided so as to penetrate the plurality of first ventilation holes through which the cooling air passes along the axial direction, and the anti-load side of the stator. An electric motor comprising an anti-load side bracket provided with a second air hole communicating with the first air hole, a hollow casing attached to the anti-load side bracket, and a cooling fan attached to the inside of the casing The cooling device is provided so as to cover the outer periphery of the stator and has a ventilation path communicating with the load side of the first ventilation hole, one end is attached to the load side bracket, and the other end is anti-load. A guide having an opening for sucking cooling air from the side is provided.
According to a fourth aspect of the present invention, in the motor cooling device according to the third aspect, the load side end portion of the guide is attached to the flange portion of the load side bracket.

請求項１記載の発明によれば、フレームの外皮表面がフレームの外側に設けたガイドによって覆う構成にしたので、ステータの発熱により伝熱され、温度が上昇するフレームの外皮は、ガイドによってモータの外周付近に配置される工作機械部品と遮断され、輻射熱の影響を外部に与えることがない。また、ガイドの開口部から吸入され、通風路を負荷側方向に向かって移動する冷却風はフレームの外皮を冷却し、さらに取り付け部付近を折り返しした冷却風は通風孔を反負荷側に向かって移動しながら、ステータの熱を奪うので、ステータの冷却能力を向上させることができる。その結果、工作機械の加工精度を維持することが可能な電動機の冷却装置を提供することができる。
また、請求項２記載の発明によれば、請求項１記載の構成に加え、ガイドをブラケットのフランジ部まで覆う構成にしたので、冷却風は通風路と通風孔の間で折り返すガイド取付部付近を移動し、フランジ部を冷却するため。ガイドによってモータと連結される工作機械部品への熱伝達を防止するこＴができる。その結果、工作機械の加工精度を維持することが可能な電動機の冷却装置を提供することができる。
請求項３記載の発明によれば、従来のステータに替えて、フレームレス形のステータを設けたので、第１実施例と基本的に同様な効果を維持すると共に、部材点数を削減し、製品コストを安価にすることができる。
また、請求項４記載の発明によれば、請求項３記載の構成に加え、ガイドの負荷側端部を負荷側ブラケットのフランジ部に取付けるようにしたので、第２実施例と基本的に同様な効果を得ることができる。 According to the first aspect of the invention, since the outer surface of the frame is covered with the guide provided on the outer side of the frame, the outer surface of the frame is heated by the heat generated by the stator and the temperature rises. It is cut off from machine tool parts arranged near the outer periphery, and does not affect the outside by radiant heat. In addition, the cooling air sucked from the opening of the guide and moving in the ventilation direction toward the load side cools the outer skin of the frame, and the cooling air that has turned back near the attachment portion moves the ventilation hole toward the anti-load side. Since the stator is deprived of heat while moving, the cooling capacity of the stator can be improved. As a result, it is possible to provide a motor cooling device capable of maintaining the machining accuracy of the machine tool.
According to the invention described in claim 2, in addition to the structure described in claim 1, since the guide is configured to cover the flange portion of the bracket, the cooling air is near the guide mounting portion that is folded back between the ventilation path and the ventilation hole. To move and cool the flange part. Heat transfer to machine tool parts connected to the motor by the guide can be prevented. As a result, it is possible to provide a motor cooling device capable of maintaining the machining accuracy of the machine tool.
According to the invention described in claim 3, since the frameless type stator is provided in place of the conventional stator, the same effects as in the first embodiment can be maintained, the number of members can be reduced, and the product can be reduced. Cost can be reduced.
According to the invention described in claim 4, in addition to the structure described in claim 3, the load side end portion of the guide is attached to the flange portion of the load side bracket, so that it is basically the same as the second embodiment. Effects can be obtained.

以下、本発明の実施例を図１に基づいて説明する。なお、本発明の構成要素が従来技術と同じものついてはその説明を省略し、異なる点について説明する。   An embodiment of the present invention will be described below with reference to FIG. Note that the description of the same constituent elements of the present invention as those of the prior art will be omitted, and different points will be described.

図１は本発明の第１実施例を示す電動機の側断面図である。なお、図中の矢印は冷却風の流れを示す。
図において、４はガイド、４Ａはガイド取付部、４Ｂは開口部、８は通風路である。
本発明の特徴は以下のとおりである。
すなわち、ステータ６の外周を覆うように設けられ、かつ、通風孔９の負荷側と連通する通風路８を有すると共に、一方端であるガイド取付部４Ａが負荷側ブラケット３に取付られ、他方端が反負荷側から冷却風を吸入するための開口部４Ｂを有するガイド４を設けた点である。
このような構成のもとで、冷却ファン１３を回転させると、ケーシング１２内で負圧が生じ、冷却風が開口部４Ｂから吸入され、通風路８を通過後、ガイド取付部４Ａ付近を折り返し、通風孔９、通風孔１０を通って、出力軸１と反対側である反負荷側端部に排出されると、冷却風はステータ６のコア、巻線で発生した熱を奪い、ステータは冷却される。
第１実施例はフレーム５の外皮表面がフレーム５の外側に設けたガイド４によって覆う構成にしたので、ステータ６の発熱により伝熱され、温度が上昇するフレーム５の外皮は、ガイド４によってモータの外周付近に配置される工作機械部品と遮断され、輻射熱の影響を外部に与えることがない。
また、ガイド４の開口部４Ｂから吸入された冷却風は、フレーム６の外皮を挟んで、フレーム５の外周に設けた通風路８と、フレーム５の内部に設けた通風孔９を負荷側方向と反負荷側方向に向かって移動するため、冷却風によるフレーム部分を通過する部分を増やすことで、ステータの冷却能力を向上させることができる。その結果、工作機械の加工精度を維持することが可能な電動機の冷却装置を提供することができる。 FIG. 1 is a sectional side view of an electric motor showing a first embodiment of the present invention. In addition, the arrow in a figure shows the flow of cooling air.
In the figure, 4 is a guide, 4A is a guide mounting portion, 4B is an opening, and 8 is a ventilation path.
The features of the present invention are as follows.
That is, it is provided so as to cover the outer periphery of the stator 6 and has a ventilation path 8 that communicates with the load side of the ventilation hole 9, and the guide attachment portion 4 </ b> A that is one end is attached to the load side bracket 3, and the other end Is that a guide 4 having an opening 4B for sucking cooling air from the opposite load side is provided.
Under such a configuration, when the cooling fan 13 is rotated, a negative pressure is generated in the casing 12, and the cooling air is sucked from the opening 4 </ b> B and after passing through the ventilation path 8, the vicinity of the guide mounting portion 4 </ b> A is folded back. When the air is exhausted through the ventilation hole 9 and the ventilation hole 10 to the opposite end portion on the opposite side of the output shaft 1, the cooling air takes away the heat generated in the core and windings of the stator 6. To be cooled.
In the first embodiment, the outer surface of the frame 5 is covered with the guide 4 provided outside the frame 5, so that the outer surface of the frame 5 is heated by the heat generated by the stator 6 and the temperature rises. It is cut off from machine tool parts arranged in the vicinity of the outer periphery of the steel plate, so that the influence of radiant heat is not given to the outside.
The cooling air sucked from the opening 4B of the guide 4 passes through the ventilation path 8 provided on the outer periphery of the frame 5 and the ventilation hole 9 provided inside the frame 5 across the outer skin of the frame 6 in the load side direction. Therefore, the cooling capacity of the stator can be improved by increasing the portion of the cooling air that passes through the frame portion. As a result, it is possible to provide a motor cooling device capable of maintaining the machining accuracy of the machine tool.

図２は本発明の第２実施例を示す電動機の側断面図である。なお、図中の矢印は冷却風の流れを示す。
第２実施例が第１実施例と異なる点は、ガイド４の負荷側端部を負荷側ブラケット３のフランジ部３Ａに取付けた点である。
第２実施例はガイド４をブラケット３のフランジ部３Ａまで覆う構成にしたので、冷却風は通風路８と通風孔９の間で折り返すガイド取付部４Ａ付近を移動し、フランジ３Ａ部を冷却するため。ガイド４によってモータと連結される工作機械部品への熱伝達を防止するこＴができる。その結果、工作機械の加工精度を維持することが可能な電動機の冷却装置を提供することができる。 FIG. 2 is a sectional side view of an electric motor showing a second embodiment of the present invention. In addition, the arrow in a figure shows the flow of cooling air.
The second embodiment differs from the first embodiment in that the load side end portion of the guide 4 is attached to the flange portion 3 </ b> A of the load side bracket 3.
In the second embodiment, since the guide 4 is configured to cover the flange portion 3A of the bracket 3, the cooling air moves around the guide mounting portion 4A that is folded back between the ventilation path 8 and the ventilation hole 9 to cool the flange 3A portion. For. Heat transfer to machine tool parts connected to the motor by the guide 4 can be prevented. As a result, it is possible to provide a motor cooling device capable of maintaining the machining accuracy of the machine tool.

図３は本発明の第３実施例を示す電動機の側断面図である。なお、図中の矢印は冷却風の流れを示す。
１６はフレームレス形のステータ、１８は通風路、１９は通風孔である。
第３実施例が第１実施例と異なる点は、冷却風を通す複数個の通風孔１９を軸方向に沿って貫通するように設けた円筒状のステータ１６と、ステータ１６の反負荷側に取りつけられ、該通風孔１９と連通した通風孔１４を設けた反負荷側ブラケット１０と、反負荷側ブラケット１０に取りつけた中空状のケーシング１２と、ケーシング１２の内側に取りつけた冷却ファン１３とを備えた構成を有するものであって、ステータ１６の外周を覆うように設けられ、かつ、通風孔１９の負荷側と連通する通風孔１４を有すると共に、一方端が負荷側ブラケット３に取付られ、他方端が反負荷側から冷却風を吸入するための開口部４Ｂを有するガイド４を設けた点である。
本実施例は、上記構成のように従来のステータに替えて、フレームレス形のステータ１６を設けたので、第１実施例と基本的に同様な効果を維持すると共に、部材点数を削減し、製品コストを安価にすることができる。
なお、ガイドの負荷側端部を、負荷側ブラケットのフランジ部に取付けるようにしても構わず、第２実施例と基本的に同様な効果を奏する。 FIG. 3 is a sectional side view of an electric motor showing a third embodiment of the present invention. In addition, the arrow in a figure shows the flow of cooling air.
Reference numeral 16 denotes a frameless stator, 18 denotes a ventilation path, and 19 denotes a ventilation hole.
The third embodiment is different from the first embodiment in that a cylindrical stator 16 provided so as to penetrate the plurality of ventilation holes 19 through which the cooling air passes along the axial direction, and a counter load side of the stator 16. An anti-load side bracket 10 provided with an air hole 14 connected to the air hole 19, a hollow casing 12 attached to the anti-load side bracket 10, and a cooling fan 13 attached to the inside of the casing 12. And has a vent hole 14 provided so as to cover the outer periphery of the stator 16 and communicated with the load side of the vent hole 19, and one end is attached to the load side bracket 3. The other end is that a guide 4 having an opening 4B for sucking cooling air from the opposite load side is provided.
In the present embodiment, the frameless type stator 16 is provided in place of the conventional stator as in the above configuration, so that basically the same effect as the first embodiment is maintained and the number of members is reduced. Product cost can be reduced.
In addition, you may make it attach the load side edge part of a guide to the flange part of a load side bracket, and there exists an effect similar to 2nd Example fundamentally.

本発明の第１実施例を示す電動機の側断面図1 is a side sectional view of an electric motor showing a first embodiment of the present invention. 本発明の第２実施例を示す電動機の側断面図Side sectional view of an electric motor showing a second embodiment of the present invention 本発明の第３実施例を示す電動機の側断面図Side sectional view of an electric motor showing a third embodiment of the present invention 従来の電動機の側断面図であって、フレーム内部に通風孔を設けた例を示したものIt is a sectional side view of a conventional electric motor, and shows an example in which a ventilation hole is provided inside the frame

符号の説明Explanation of symbols

１ 出力軸
２、１１ 軸受
３ 負荷側ブラケット
３Ａ フランジ部
４ ガイド
４Ａ ガイド取付部
４Ｂ 開口部
５ フレーム
６ ステータ
７ ロータ
８ 通風路
９ 通風孔（第１通風孔）
１０ 反負荷側ブラケット
１２ ケーシング
１３ 冷却ファン
１４ 通風孔（第２通風孔）
１６ ステータ
１８ 通風路
１９ 通風孔（第１通風孔） DESCRIPTION OF SYMBOLS 1 Output shaft 2 and 11 Bearing 3 Load side bracket 3A Flange part 4 Guide 4A Guide attaching part 4B Opening part 5 Frame 6 Stator 7 Rotor 8 Ventilation path 9 Ventilation hole (1st ventilation hole)
10 Anti-load side bracket 12 Casing 13 Cooling fan 14 Ventilation hole (second ventilation hole)
16 Stator 18 Ventilation path 19 Ventilation hole (first ventilation hole)

Claims (4)

円筒状のステータの外周に取付けられ、冷却風を通す複数個の第１の通風孔を軸方向に沿って貫通するように設けたフレームと、
前記フレームの反負荷側に取りつけられ、前記第１の通風孔と連通した第２の通風孔を設けた反負荷側ブラケットと、
前記反負荷側ブラケットに取りつけた中空状のケーシングと、
前記ケーシングの内側に取りつけた冷却ファンとを備えた電動機の冷却装置において、
前記フレームの外周を覆うように設けられ、かつ、前記第１通風孔の負荷側と連通する通風路を有すると共に、一方端が負荷側ブラケットに取付られ、他方端が反負荷側から冷却風を吸入するための開口部を有するガイドを設けたことを特徴とする電動機の冷却装置。 A frame attached to the outer periphery of the cylindrical stator and provided so as to penetrate the plurality of first ventilation holes through which the cooling air passes along the axial direction;
An anti-load side bracket provided on the anti-load side of the frame and provided with a second vent hole communicating with the first vent hole;
A hollow casing attached to the anti-load side bracket;
In an electric motor cooling device comprising a cooling fan mounted inside the casing,
The air flow path is provided so as to cover the outer periphery of the frame and communicates with the load side of the first ventilation hole, one end is attached to the load side bracket, and the other end receives cooling air from the non-load side. An electric motor cooling device comprising a guide having an opening for inhalation. 前記ガイドの負荷側端部を、前記負荷側ブラケットのフランジ部に取付けたことを特徴とする請求項１記載の電動機の冷却装置。 The motor cooling device according to claim 1, wherein a load side end portion of the guide is attached to a flange portion of the load side bracket. 冷却風を通す複数個の第１の通風孔を軸方向に沿って貫通するように設けた円筒状のステータと、
前記ステータの反負荷側に取りつけられ、前記第１の通風孔と連通した第２の通風孔を設けた反負荷側ブラケットと、
前記反負荷側ブラケットに取りつけた中空状のケーシングと、
前記ケーシングの内側に取りつけた冷却ファンとを備えた電動機の冷却装置において、
前記ステータの外周を覆うように設けられ、かつ、前記第１通風孔の負荷側と連通する通風路を有すると共に、一方端が負荷側ブラケットに取付られ、他方端が反負荷側から冷却風を吸入するための開口部を有するガイドを設けたことを特徴とする電動機の冷却装置。 A cylindrical stator provided so as to penetrate the plurality of first ventilation holes passing the cooling air along the axial direction;
An anti-load-side bracket provided on the anti-load side of the stator and provided with a second vent hole communicating with the first vent hole;
A hollow casing attached to the anti-load side bracket;
In the cooling device for the electric motor provided with a cooling fan attached to the inside of the casing,
The stator is provided so as to cover the outer periphery of the stator and has a ventilation path communicating with the load side of the first ventilation hole, one end is attached to the load side bracket, and the other end receives cooling air from the non-load side. An electric motor cooling device comprising a guide having an opening for inhalation. 前記ガイドの負荷側端部を、前記負荷側ブラケットのフランジ部に取付けたことを特徴とする請求項３記載の電動機の冷却装置。

The motor cooling device according to claim 3, wherein a load side end portion of the guide is attached to a flange portion of the load side bracket.

JP2003354017A 2003-10-14 2003-10-14 Cooling structure of motor Pending JP2005124266A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011151886A (en) * 2010-01-19 2011-08-04 Toyota Central R&D Labs Inc In-wheel motor
DE102013110662A1 (en) 2012-09-28 2014-04-03 Fanuc Corporation Engine with highly efficient air cooling system
EP3562002A1 (en) * 2018-04-24 2019-10-30 Siemens Gamesa Renewable Energy A/S Cooling fan for a wind turbine
KR20220138120A (en) * 2021-04-05 2022-10-12 경진부로아 주식회사 Drive motor for blower with cooling structure using air circulation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011151886A (en) * 2010-01-19 2011-08-04 Toyota Central R&D Labs Inc In-wheel motor
DE102013110662A1 (en) 2012-09-28 2014-04-03 Fanuc Corporation Engine with highly efficient air cooling system
DE102013110662B4 (en) * 2012-09-28 2020-12-17 Fanuc Corporation Motor with highly efficient air cooling structure
EP3562002A1 (en) * 2018-04-24 2019-10-30 Siemens Gamesa Renewable Energy A/S Cooling fan for a wind turbine
KR20220138120A (en) * 2021-04-05 2022-10-12 경진부로아 주식회사 Drive motor for blower with cooling structure using air circulation
KR102545531B1 (en) * 2021-04-05 2023-06-20 경진부로아 주식회사 Drive motor for blower with cooling structure using air circulation

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