JP5566940B2 - Main motor cooling system for railway vehicles - Google Patents

Main motor cooling system for railway vehicles Download PDF

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JP5566940B2
JP5566940B2 JP2011078663A JP2011078663A JP5566940B2 JP 5566940 B2 JP5566940 B2 JP 5566940B2 JP 2011078663 A JP2011078663 A JP 2011078663A JP 2011078663 A JP2011078663 A JP 2011078663A JP 5566940 B2 JP5566940 B2 JP 5566940B2
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main motor
cooling device
blower
motor cooling
suction port
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JP2012210914A (en
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宏史 河田
行伸 阿部
渡辺　　誠
誠司 澁谷
徳一郎 奥
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Hitachi Ltd
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Description

本発明は、鉄道車両の台車に備えられる主電動機を冷却する主電動機冷却装置に関し、特に、冷却装置を構成する送風機と送風機に接続されるとともに、主電動機に冷却風を供給する通風ダクト内に雪を侵入することを抑制することのできる鉄道車両用主電動機冷却装置に関する。   The present invention relates to a main motor cooling device that cools a main motor provided in a bogie of a railway vehicle, and particularly, in a ventilation duct that is connected to a fan and a fan constituting the cooling device and supplies cooling air to the main motor. The present invention relates to a railcar main motor cooling device capable of suppressing intrusion of snow.

新幹線（登録商標）に代表される高速鉄道車両、または、大きな駆動力を要する貨物列車用電気機関車では、高速化あるいは高出力化に伴い、鉄道車両の駆動に供される主電動機の出力が大きくなる傾向がある。主電動機を構成するステータの外周部に備えられる冷却フィンによる自然冷却のみでは十分に主電動機を冷却することができないため、送風機と通風ダクトなどからなる主電動機冷却装置が鉄道車両の台枠の下面に備えられる。主電動機冷却装置によって冷却用外気が主電動機の内部に導かれ、主電動機を強制冷却する方式が採用されている。   In high-speed railway vehicles represented by the Shinkansen (registered trademark) or electric locomotives for freight trains that require a large driving force, the output of the main motor used to drive the railway vehicles increases as the speed increases or the output increases. There is a tendency to grow. Since the main motor cannot be sufficiently cooled only by natural cooling by the cooling fins provided on the outer peripheral portion of the stator constituting the main motor, the main motor cooling device including a blower and a ventilation duct is provided on the lower surface of the railcar frame. Prepared for. A system is adopted in which the outside air for cooling is guided into the main motor by the main motor cooling device and the main motor is forcibly cooled.

外気によって主電動機を冷却する場合、外気に含まれる塵埃などによって、主電動機に絶縁不良などの不具合が発生しないように、外気に含まれる異物を取り除く対策を講じる必要がある。
このため、電気機関車に搭載される抵抗器を冷却する例として、冷却用送風機と通風ダクトとからなる車両用冷却装置が特許文献１に記載されている。この車両用冷却装置は、通風ダクト内に侵入する塵埃の量及び通風ダクト内に蓄積される塵埃の量を小さくすることを目的として、通風ダクトの吸込み口を車体の側壁に配置して、通風ダクトの吸込み口を塵埃が最も多く発生する地面から十分に隔離させ、車体内部に設けた通風ダクト全体をＵ字状にし、かつ、このＵ字状の湾曲部を形成する隅角部を円弧面にして、通風ダクトに導かれる空気を円滑に流動できるようにしている。 When the main motor is cooled by outside air, it is necessary to take measures to remove foreign matters contained in the outside air so that the main motor does not suffer from problems such as poor insulation due to dust contained in the outside air.
For this reason, Patent Document 1 discloses a vehicular cooling device including a cooling fan and a ventilation duct as an example of cooling a resistor mounted on an electric locomotive. In order to reduce the amount of dust that enters the ventilation duct and the amount of dust that accumulates in the ventilation duct, this vehicle cooling device has a ventilation duct suction port disposed on the side wall of the vehicle body, The duct inlet is sufficiently isolated from the ground where dust is generated most, the entire ventilation duct provided inside the vehicle body is U-shaped, and the corners forming the U-shaped curved portion are arcuate surfaces. Thus, the air guided to the ventilation duct can flow smoothly.

特開昭５８−６１０１１号公報JP 58-61011 A

特許文献１に記載された電気機関車用の車両用冷却装置とは異なり、高速鉄道車両（以下、鉄道車両）では、乗客が搭乗するスペースを確保するために、吸込み口を車体の側壁に配置して、通風ダクトを鉄道車両の車体内部に設けることを避け、車両用主電動機冷却装置は鉄道車両の台枠の下面に配設される。このため、車両用主電動機冷却装置は、鉄道車両の台枠の下面に設置できるよう、可能な限り小型化することが要求される。   Unlike a vehicle cooling device for an electric locomotive described in Patent Document 1, in a high-speed railway vehicle (hereinafter referred to as a railway vehicle), a suction port is arranged on the side wall of the vehicle body in order to secure a space for passengers to board. Thus, the vehicle main motor cooling device is disposed on the lower surface of the railcar frame so that the ventilation duct is not provided inside the vehicle body of the railcar. For this reason, the vehicle main motor cooling device is required to be as small as possible so that it can be installed on the lower surface of the railcar frame.

さらに、車両用主電動機冷却装置の送風機に取り込まれる外気に雪が含まれる場合、台枠の下方から外気とともに送風機に吸い込まれた雪が、通気ダクトを経由して主電動機の内部に侵入する恐れがある。主電動機の内部に侵入した雪は溶融して、主電動機の絶縁性劣化の原因となったり、主電動機の内部に生じる錆の原因となったりする場合がある。また、鉄道車両の運転中に主電動機の内部に侵入した雪が主電動機から発生する熱により一旦溶融した後、鉄道車両が留置される間に再度凍結して、主電動機の不具合の原因となる場合が想定される。   Further, when the outside air taken into the blower of the vehicular main motor cooling device contains snow, the snow sucked into the blower together with the outside air from below the underframe may enter the inside of the main motor through the ventilation duct. . Snow that has entered the inside of the main motor melts and may cause insulation deterioration of the main motor or cause rust to occur inside the main motor. In addition, when snow that has entered the main motor during operation of the railway vehicle is once melted by the heat generated by the main motor, it freezes again while the railway vehicle is in place, causing a malfunction of the main motor Is assumed.

そこで、本発明の目的は、鉄道車両用主電動機冷却装置を、鉄道車両の台枠の下面に配設できる程度に小型化するとともに、鉄道車両の台枠から吸い込まれる外気中の雪片等を確実に除去できるようにすることにある。   Accordingly, an object of the present invention is to downsize the railway car main motor cooling device to such an extent that it can be disposed on the lower surface of the railcar frame, and to reliably prevent snowflakes and the like in the outside air sucked from the railcar frame. It is to be able to be removed.

上記の目的を達成するため、本発明の鉄道車両用主電動機冷却装置は、次のような技術的手段を講じた。すなわち、
（１）鉄道車両の台枠の下面に配設される鉄道車両用主電動機冷却装置において、前記車両用主電動機冷却装置は、吸込み口を備えた筐体と、該筐体内に配設された送風機と、該送風機から送風される冷却風を車両用主電動機に導く通風ダクトとから構成され、前記吸込み口と前記送風機との間に、前記吸込み口と対向し、前記送風機により送風される空気の流れを横切る方向に延びる捕集板を設置し、慣性衝突を利用して前記吸込み口から冷却風とともに吸い込まれる雪を前記捕集板で捕集し、捕集した雪を該捕集板に設けたヒータにより融解して、前記筐体の外部へ排出するようにした。 In order to achieve the above object, the rail car main motor cooling device of the present invention has taken the following technical means. That is,
(1) In the railway vehicle main motor cooling device disposed on the lower surface of the railcar frame, the vehicle main motor cooling device is disposed within the housing having a suction port and the housing. An air blower and an air duct that guides cooling air blown from the blower to a vehicle main motor, and is opposed to the suction port between the suction port and the blower and is blown by the blower A collecting plate extending in a direction crossing the flow of the air is installed, snow that is sucked in along with cooling air from the suction port is collected by the collecting plate using inertial collision, and the collected snow is collected on the collecting plate. It was melted by the provided heater and discharged outside the casing.

（２）（１）の鉄道車両用主電動機冷却装置において、前記捕集板を、前記送風機により送風される空気の流れに対し複数設けた。 (2) In the railway car main motor cooling device of (1), a plurality of the collecting plates are provided for the flow of air blown by the blower.

（３）（２）の鉄道車両用主電動機冷却装置において、前記筐体の内部に配設される前記複数の捕集板を、前記筐体の前記吸込み口から該捕集板を経て前記送風機に至る流路をラビリンス構造となるように配置した。 (3) In the railcar main motor cooling device of (2), the plurality of collecting plates disposed inside the casing are passed from the suction port of the casing through the collecting plate to the blower. The flow path leading to is arranged so as to have a labyrinth structure.

（４）（２）または（３）の鉄道車両用主電動機冷却装置において、前記複数の捕集板を前記送風機により送風される空気の流れに対し斜めに取り付けた。 (4) In the railway car main motor cooling device of (2) or (3), the plurality of collecting plates are attached obliquely to the flow of air blown by the blower.

本発明の鉄道車両用主電動機冷却装置によれば、車両用主電動機冷却装置が、吸込み口を備えた筐体と、該筐体内に配設された送風機と、該送風機から送風される冷却風を車両用主電動機に導く通風ダクトとから構成されるため、鉄道車両の台枠の下面にコンパクトに配置することが可能になるとともに、台枠の下面から吸入され、通気ダクトを経由して主電動機の内部に侵入する雪を確実に除去できることができる。
このため、侵入した雪による主電動機の絶縁性劣化、内部に生じる錆の発生を防止するとともに、鉄道車両の運転中に主電動機の内部に侵入した雪が主電動機から発生する熱により一旦溶融した後、鉄道車両が留置される間に再度凍結して、主電動機の不具合を招くような事態を確実に防止することができる。 According to the railcar main motor cooling device of the present invention, the vehicle main motor cooling device includes a housing having a suction port, a blower disposed in the housing, and cooling air blown from the blower. It is possible to arrange it compactly on the underside of the railcar frame, and it is sucked from the underside of the underframe and passes through the ventilation duct. Snow entering the inside of the electric motor can be reliably removed.
For this reason, while preventing the deterioration of the insulation of the main motor due to the invading snow and the occurrence of rust generated inside, the snow entering the inside of the main motor during operation of the railway vehicle is once melted by the heat generated from the main motor Thus, it is possible to reliably prevent a situation where the railway vehicle is frozen again while being detained and causes a malfunction of the main motor.

鉄道車両の一例を模式的に示す側面図。The side view which shows an example of a rail vehicle typically. 図１に示されるＡ部の車体幅方向中央部の垂直断面図。FIG. 2 is a vertical cross-sectional view of a center portion in a vehicle width direction of A portion shown in FIG. 実施例１における図２Ｂ−Ｂ部の拡大図。FIG. 2B is an enlarged view of a portion B-B in the first embodiment. 図３に示されるＣ−Ｃ部の断面図。Sectional drawing of the CC section shown by FIG. 実施例２における図２Ｂ−Ｂ部の拡大図。FIG. 2 is an enlarged view of FIG. 2B-B in the second embodiment. 実施例３における図２Ｂ−Ｂ部の拡大図。FIG. 2B is an enlarged view of a portion B-B in Example 3. 実施例４における図２Ｂ−Ｂ部の拡大図。FIG. 2B is an enlarged view of a part B-B in Example 4. 実施例５における図２Ｂ−Ｂ部の拡大図。The enlarged view of FIG. 2B-B part in Example 5. FIG.

以下、図面を参照して本発明の鉄道車両用主電動機冷却装置の実施例を説明する。   Hereinafter, embodiments of a main motor cooling apparatus for a railway vehicle according to the present invention will be described with reference to the drawings.

［実施例１］
図１は、本発明の対象である主電動機冷却用送風機が設置されている車両の一例として挙げた、鉄道車両の概略構成を示す側面図である。図１において、車体２０は鉄道車両の本体を形成する。
鉄道車両１０の車体２０は、床面をなす台枠２０４の幅方向の両端部に立設された側構体２０１と、台枠２０４の長手方向の両端部に立設された妻構体２０３、２０３と、側構体２０１、２０１及び妻構体２０３、２０３の上端部に載置された屋根構体２０２から構成される。 [Example 1]
FIG. 1 is a side view showing a schematic configuration of a railway vehicle cited as an example of a vehicle in which a main motor cooling fan that is the subject of the present invention is installed. In FIG. 1, a vehicle body 20 forms a main body of a railway vehicle.
The vehicle body 20 of the railway vehicle 10 includes a side structure 201 erected at both ends in the width direction of the underframe 204 that forms the floor surface, and a wife structure 203, 203 erected at both ends in the longitudinal direction of the underframe 204. And the roof structure 202 placed on the upper ends of the side structures 201 and 201 and the wife structures 203 and 203.

図２は、図１に示されるＡ部車体幅方向中央部の垂直断面図であり、鉄道車両１０は、その床面をなす台枠２０４の長手方向の両端部に備えられる枕梁２０５、２０５を介して台車２１、２１（図１参照）によって支持されている。
鉄道車両１０を支持する台車２１には、台車２１に備えられる各車輪２１４、２１４を駆動する主電動機２１３、２１３が備えられる。各主電動機２１３、２１３の冷却風導入口には、台車２１と台枠２０４との間の相対変位を吸収できるよう、柔軟性を有する連結ダクト２１５、２１５が取り付けられ、この連結ダクト２１５には、台枠２０４の下面に、車両１０の長手方向（矢印３００に沿う方向）に沿って備えられる通風ダクト２１２の下流端部が接続されている。 FIG. 2 is a vertical sectional view of the center part in the vehicle body width direction shown in FIG. 1, and the railcar 10 has pillow beams 205, 205 provided at both ends in the longitudinal direction of the base frame 204 that forms the floor surface. Are supported by carriages 21 and 21 (see FIG. 1).
The carriage 21 that supports the railway vehicle 10 is provided with main motors 213 and 213 that drive the wheels 214 and 214 provided on the carriage 21. Flexible cooling ducts 215 and 215 are attached to the cooling air inlets of the main motors 213 and 213 so that relative displacement between the carriage 21 and the frame 204 can be absorbed. The downstream end of the ventilation duct 212 provided along the longitudinal direction of the vehicle 10 (the direction along the arrow 300) is connected to the lower surface of the underframe 204.

通風ダクト２１２の上流端部は、図２の矢印Ｂ方向の断面図である図３に示されるように、ファンケーシングをなす筐体５２に接続される。主電動機冷却用送風機２１１を構成する筐体５２の内部には、モータ４０により駆動されるファン３０が備えられており、筐体５２に備えられる吸込み口３２から筐体５２（ファンケーシング）の内部のファン３０、通風ダクト２１２、連結ダクト２１５を経て主電動機２１３の内部に至る冷却流路が構成されている。
鉄道車両用主電動機冷却装置は、これらの連結ダクト２１５、通風ダクト２１２、筐体５２、主電動機冷却用送風機２１１から構成されており、主電動機冷却用送風機２１１によって取り込まれる冷却用外気は、連結ダクト２１５及び通風ダクト２１１及び筐体５２を経由して、主電動機２１３の内部に送風され、主電動機２１３を冷却した後、主電動機２１３に備えられる排気口（図示せず）から大気へ放出される。 As shown in FIG. 3, which is a cross-sectional view in the direction of arrow B in FIG. 2, the upstream end of the ventilation duct 212 is connected to a casing 52 that forms a fan casing. A fan 30 driven by a motor 40 is provided inside the casing 52 that constitutes the main motor cooling fan 211, and the interior of the casing 52 (fan casing) from the suction port 32 provided in the casing 52. The cooling flow path that reaches the inside of the main motor 213 through the fan 30, the ventilation duct 212, and the connection duct 215 is configured.
The main motor cooling device for a railway vehicle is composed of the connecting duct 215, the ventilation duct 212, the casing 52, and the main motor cooling fan 211, and the cooling outside air taken in by the main motor cooling fan 211 is connected. The air is blown into the main motor 213 through the duct 215, the ventilation duct 211, and the casing 52, and after cooling the main motor 213, it is discharged to the atmosphere from an exhaust port (not shown) provided in the main motor 213. The

この実施例では、吸込み口３２と主電動機冷却用送風機２１１との間に、雪を捕集する捕集板３３を設置し、外部の空気の流れに対して直行となるような流路構造とし、慣性衝突を利用して雪を捕集する。
すなわち、主電動機冷却用送風機２１１の運転に伴い、外部から雪片とともに吸い込まれる空気は、矢印５００に示されるように、開口面積が絞られた吸込み口３２により流速が高められ、質量の大きい雪片は、慣性により直進して、ヒータを備えた捕集板３３に衝突し捕捉され、雪片の除去された空気が捕集板３３を通過して、通風ダクト２１２に流れる。一方、質量の小さい空気は、捕集板３３が空気抵抗となるため流速が弱められ、下流へと通過する。そして、捕集板３３を迂回して、捕集板３３の外周端と筐体５２内壁との間隙に高速流が形成されることになる。
なお、吸込み口３２の外端には、外部の空気に含まれる大きなごみを取り除くため、金網等からなるフィルタ３１が設置されている。 In this embodiment, a collecting plate 33 that collects snow is installed between the suction port 32 and the main motor cooling fan 211, and the flow path structure is configured to be perpendicular to the flow of external air. Collect snow using inertial collisions.
That is, as the main motor cooling blower 211 is operated, the air sucked together with the snowflakes from the outside is increased in the flow velocity by the suction port 32 with a reduced opening area, as indicated by the arrow 500, The air travels straight due to inertia, collides with the collecting plate 33 provided with a heater and is captured, and the air from which the snowflakes have been removed passes through the collecting plate 33 and flows into the ventilation duct 212. On the other hand, air with a small mass passes through the downstream because the collection plate 33 becomes air resistance, the flow velocity is weakened. Then, a high-speed flow is formed in the gap between the outer peripheral end of the collection plate 33 and the inner wall of the housing 52, bypassing the collection plate 33.
A filter 31 made of a wire mesh or the like is installed at the outer end of the suction port 32 in order to remove large dust contained in the outside air.

図４は図３の矢印Ｃ方向の断面図を示し、ヒータを備えた捕集板３３は、筐体５２の内壁と高さ方向の４箇所で接続され、その外周に円弧状の間隙が形成されており、この間隙に、図３に矢印５００で示す高速流が形成される。
一方、捕集板３３の下方には、水受けとなるよう、円弧状の容器からなるストッパー３４が設けられ、捕集された雪片は、捕集板３３に設置したヒータにより融解されて徐々に大きな水滴となり、ストッパー３４内部に滴下して受け止められ、その下部に設けられた水抜き用パイプ３５を通して外に放出する。このように、捕集板３３、ストッパー３４、水抜き用パイプ３５により、本実施例の雪取り部５０が構成される。
これにより、主電動機冷却用送風機２１１に連なる通風ダクト２１２には、捕集板３３と筐体５２の内壁との間隙を通る雪片が分離された高速の空気流と、捕集板３３を通過することにより雪片が除去された空気が導入されることになり、主電動機２１３内に雪片が侵入するのを確実に防止することが可能となり、上述した雪片の侵入に起因する不具合を確実に回避することができる。 4 shows a cross-sectional view in the direction of arrow C in FIG. 3, and the collecting plate 33 provided with the heater is connected to the inner wall of the housing 52 at four positions in the height direction, and an arc-shaped gap is formed on the outer periphery thereof. A high-speed flow indicated by an arrow 500 in FIG. 3 is formed in this gap.
On the other hand, a stopper 34 made of an arc-shaped container is provided below the collection plate 33 so as to serve as a water receiver. The collected snowflakes are gradually melted by a heater installed on the collection plate 33. A large water droplet is dropped and received inside the stopper 34, and is discharged to the outside through a water draining pipe 35 provided below the stopper 34. Thus, the snow collecting part 50 of a present Example is comprised by the collection plate 33, the stopper 34, and the drain pipe 35. FIG.
As a result, the air duct 212 connected to the air blower 211 for cooling the main motor passes through the collection plate 33 and the high-speed air flow in which snowflakes passing through the gap between the collection plate 33 and the inner wall of the housing 52 are separated. As a result, the air from which the snowflakes have been removed is introduced, and it is possible to reliably prevent the snowflakes from entering the main motor 213, and to reliably avoid the above-described problems caused by the entry of the snowflakes. be able to.

なお、この実施例では、捕集板３３の下方に水受けとなるストッパー３４を設けたが、捕集板３３の下流側において、筐体５２の内壁底部に、水を堰き止めるリブを設け、その上流側において、筐体５２の内壁最下端に開口する水抜き用パイプ３５を設けてもよい。   In this embodiment, the stopper 34 serving as a water receiver is provided below the collection plate 33. On the downstream side of the collection plate 33, a rib for damming water is provided on the bottom of the inner wall of the housing 52. On the upstream side, a drain pipe 35 that opens to the lowermost end of the inner wall of the housing 52 may be provided.

ところで、底部捕集板３３に設けられたヒータは、運転席に設けた調節スイッチにより、降雪量や積雪量に応じて、その通電量が手動により調整されるが、ヒータへの通電量を過度に大きくすると、無駄な電力消費を増大させるばかりか、雪片を過度に加熱して水蒸気が発生したり、大きな水滴になる前に捕集板３３を通過してしまう可能性がある。また、吸い込まれる雪片量に対し、ヒータへの通電量が過度に小さいと、雪片の溶解が間に合わず、捕集板３３の吸込み口３２側表面に雪片が徐々に堆積して目詰まりし、主電動機冷却用送風機２１１に導入される冷却用の空気量が不足したり、あるいは、表面を流れる空気流により堆積した雪片が、捕集板３３と筐体５２の内壁との間隙に引き込まれる可能性がある。   By the way, the heater provided on the bottom collecting plate 33 is manually adjusted by the adjustment switch provided in the driver's seat according to the amount of snowfall and the amount of snowfall. If it is increased, wasteful power consumption may be increased, and the snowflakes may be heated excessively to generate water vapor, or may pass through the collecting plate 33 before becoming large water droplets. In addition, if the energization amount to the heater is excessively small with respect to the amount of snowflakes sucked in, the snowflakes will not melt in time, and snowflakes will gradually accumulate on the suction port 32 side surface of the collecting plate 33 and become clogged. There is a possibility that the amount of cooling air introduced into the electric motor cooling blower 211 is insufficient, or that snowflakes accumulated by the airflow flowing on the surface are drawn into the gap between the collecting plate 33 and the inner wall of the housing 52. There is.

そこで、乗務員によるヒータに係る操作を省略するために、筐体５２の内部において、捕集板３３の上流側と下流側の圧力を検出する圧力センサを設置し、両者の圧力差に応じて、捕捉された雪片の量を判定して自動的に通電タイミング、通電量を制御してもよい。
また、地上に備えられた降雪検知器の検知結果を鉄道車両へ伝送して、鉄道車両に備えられる主電動機冷却装置に備えられるヒータの通電タイミングと、通電量を制御してもよい。
さらに、予め鉄道車両の車上設備に記憶された過去の天候データに、リアルタイムに測定される車外温度を参照して、鉄道車両に備えられる主電動機冷却装置に備えられるヒータの通電タイミングと通電量を個別に制御してもよい。 Therefore, in order to omit the operation related to the heater by the crew, a pressure sensor for detecting the pressure on the upstream side and the downstream side of the collection plate 33 is installed inside the casing 52, and according to the pressure difference between the two, The energization timing and energization amount may be automatically controlled by determining the amount of the captured snowflake.
Moreover, the detection result of the snowfall detector provided on the ground may be transmitted to the railway vehicle, and the energization timing and the energization amount of the heater provided in the main motor cooling device provided in the railway vehicle may be controlled.
Further, referring to past weather data previously stored in the on-board equipment of the railway vehicle and the outside temperature measured in real time, the energization timing and the energization amount of the heater provided in the main motor cooling device provided in the railway vehicle May be individually controlled.

［実施例２］
図５は、本実施例による鉄道車両用主電動機冷却装置の断面図であり、捕集板３３及び吸込み口３２側表面を凹凸にすることにより、雪を捕集する表面積を増大させるとともに、外部からの空気の圧力損失を低減することが可能となる。
なお、ヒータにより融解して発生した水滴が、ストッパー３４に円滑に滴下されるよう、水平方向に延びる凸部を、適当な間隔で切除して上下方向の溝を形成したり、あるいは、凸部自体を上下方向に延びるように配置してもよい。 [Example 2]
FIG. 5 is a cross-sectional view of the railway vehicle main motor cooling device according to the present embodiment. By making the surfaces of the collection plate 33 and the suction port 32 uneven, the surface area for collecting snow is increased. It becomes possible to reduce the pressure loss of the air from.
In addition, in order to smoothly drop water droplets generated by melting by the heater, the protrusions extending in the horizontal direction are cut off at appropriate intervals to form vertical grooves, or the protrusions. You may arrange | position so that itself may be extended in an up-down direction.

［実施例３］
図６は、本実施例による鉄道車両用主電動機冷却装置の断面図である。雪を捕集する捕集板３３を複数枚にすることにより、雪を捕集する表面積が増える。
この実施例では、上流側の捕集板３３を上下方向に間隔をおいて２分割しており、これにより、上流側の捕集板３３表面で雪片を捕集するとともに、矢印５００で示すように、捕集板３３と筐体５２の内壁との間隙を通る空気流が形成される。さらに、上流側の捕集板３３の間を脱け、下流側の捕集板３３で雪片を捕集するとともに、筐体５２の内壁との間を通る空気流も形成されることになるので、雪片の捕集をより効率よく行うとともに、外部からの空気の圧力損失を低減することが可能となる。 [Example 3]
FIG. 6 is a cross-sectional view of a railway vehicle main motor cooling device according to this embodiment. By using a plurality of collecting plates 33 for collecting snow, the surface area for collecting snow increases.
In this embodiment, the upstream collecting plate 33 is divided into two parts in the vertical direction, thereby collecting snowflakes on the surface of the upstream collecting plate 33 and as indicated by an arrow 500. In addition, an air flow passing through the gap between the collection plate 33 and the inner wall of the housing 52 is formed. Furthermore, since the upstream collecting plate 33 is taken off and snowflakes are collected by the downstream collecting plate 33, an air flow passing between the inner wall of the housing 52 is also formed. It is possible to collect snowflakes more efficiently and reduce the pressure loss of air from the outside.

［実施例４］
図７は、本実施例による鉄道車両用主電動機冷却装置の断面図である。筐体５２内部に配設される複数の捕集板３３を、筐体５２の吸込み口３２から捕集板33を経てファン３０に至る流路をラビリンス構造としている。
この実施例では、吸込み口３２が筐体５２の下端に設けられ、上流側の捕集板３３の下縁を筐体５２の内壁に固着し、下流側の捕集板３３の上縁を筐体５２の内壁に固着している。この構造によると、吸込み口３２から吸い込まれた外部の空気は、矢印５００で示すように上流側の捕集板３３の下方に向けて直進した後、その表面に沿って上方に流れた後、上流側の捕集板３３の上端と筐体５２の内壁を迂回する。そして、下流側の捕集板３３の上端に衝突した後、その表面に沿って下方に流れ、下流側の捕集板３３の下端と筐体５２の内壁の間を通過する。 [Example 4]
FIG. 7 is a cross-sectional view of a railway vehicle main motor cooling device according to this embodiment. A plurality of collecting plates 33 arranged inside the housing 52 have a labyrinth structure in a flow path from the suction port 32 of the housing 52 to the fan 30 through the collecting plate 33.
In this embodiment, the suction port 32 is provided at the lower end of the housing 52, the lower edge of the upstream collecting plate 33 is fixed to the inner wall of the housing 52, and the upper edge of the downstream collecting plate 33 is secured to the housing. It is fixed to the inner wall of the body 52. According to this structure, the external air sucked from the suction port 32 moves straight along the surface of the upstream collecting plate 33 as indicated by an arrow 500, and then flows upward along the surface. The upper end of the upstream collecting plate 33 and the inner wall of the housing 52 are bypassed. Then, after colliding with the upper end of the downstream collecting plate 33, it flows downward along the surface and passes between the lower end of the downstream collecting plate 33 and the inner wall of the housing 52.

したがって、空気流は、上流側及び下流側の捕集板３３の表面に沿って流れることになり、雪片を捕集する表面積が増え、より確実に雪片を捕集することが可能になる。
なお、この実施例では、上流側の捕集板３３の上流、及び下流側の捕集板３３の下方付近に、筐体５２の内壁最下端に開口するよう、水抜き用パイプ３５を配置しており、下流側の捕集板３３の下流側に、水を堰き止めるリブ３６を設けている。このように、上流側及び下流側の捕集板３３を直接筐体５２の内壁に固着し、水抜き構造も簡素化できるため、製作も容易になる。 Therefore, the air flow flows along the surfaces of the upstream and downstream collecting plates 33, and the surface area for collecting snowflakes increases, making it possible to collect snowflakes more reliably.
In this embodiment, the drainage pipe 35 is disposed in the vicinity of the lower end of the inner wall of the housing 52 in the vicinity of the upstream side of the upstream side collecting plate 33 and the lower side of the downstream side collecting plate 33. A rib 36 for blocking water is provided on the downstream side of the downstream collecting plate 33. In this manner, the upstream and downstream collecting plates 33 are directly fixed to the inner wall of the housing 52, and the water draining structure can be simplified, so that the manufacture is facilitated.

［実施例５］
図８は、本実施例による鉄道車両用主電動機冷却装置の断面図である。この実施例では、捕集板３３を中心側が吸込み口３２に近接するよう傾斜させた状態で三列に設けられ、上流側の２列については、中央部に間隙が形成され、矢印５００に示すように、最も上流側の捕集板３３表面を流れる空気流、中央の捕集板３３表面を流れる空気流、そして、最も下流側の捕集板３３に直接到り、その表面を直接流れる空気流とが形成される。これにより、雪片を捕集する表面積が増え、より確実に雪片を捕集することが可能になる。図８においても、図７に示される水抜き用パイプ３５と水をせき止めるリブ３６を備えても良い。 [Example 5]
FIG. 8 is a cross-sectional view of a railway vehicle main motor cooling device according to this embodiment. In this embodiment, the collection plates 33 are provided in three rows in a state where the center side is inclined so as to be close to the suction port 32, and a gap is formed in the center of the two upstream rows, as indicated by an arrow 500. As described above, the air flow flowing on the surface of the most upstream collecting plate 33, the air flow flowing on the surface of the central collecting plate 33, and the air directly reaching the most downstream collecting plate 33 and flowing directly on the surface thereof A stream is formed. Thereby, the surface area which collects a snowflake increases and it becomes possible to collect a snowflake more reliably. Also in FIG. 8, the water draining pipe 35 shown in FIG. 7 and the rib 36 for blocking water may be provided.

なお、いずれの実施例においても、捕集板３３、ストッパー３４、水抜き用パイプ３５等を一体的にユニット化し、雪の降らない時期は、筐体５２の内部から簡単に着脱できるようにすれば、特に夏場などにおいて、主電動機２１３の冷却効率低下を防止すること可能となる。   In any of the embodiments, the collecting plate 33, the stopper 34, the drain pipe 35, and the like are integrated into a unit so that the snow can be easily detached from the inside of the housing 52 when it does not snow. For example, particularly in summer, it is possible to prevent the cooling efficiency of the main motor 213 from decreasing.

以上説明したように、本発明によれば、車両用主電動機冷却装置を鉄道車両の台枠の下面にコンパクトに配置できるとともに、台枠の下面から通気ダクトを経由して吸入される空気に混入される雪片を、捕集板により確実に捕集して、主電動機の内部に侵入する雪を除去できることができるので、特に、走行安定性や空気抵抗の観点から車高を低く設計する必要がある高速鉄道車両に、メンテナンス費用を改善するための効果的手段として広く採用されることが期待できる。   As described above, according to the present invention, the vehicular main motor cooling device can be compactly arranged on the lower surface of the railcar frame and mixed into the air sucked from the lower surface of the frame via the ventilation duct. It is necessary to design the vehicle height to be low especially from the viewpoint of running stability and air resistance. It can be expected to be widely adopted as an effective means for improving maintenance costs in certain high-speed railway vehicles.

１０ 鉄道車両
２０ 車体
２０１ 側構体
２０２ 屋根構体
２０３ 妻構体
２０４ 台枠
２０５ 枕梁
２１ 台車
２１１ 主電動機冷却用送風機
２１２ 通風ダクト
２１３ 主電動機
２１４ 車輪
２１５ 連結ダクト
３０ ファン
３１ フィルタ
３２ 吸込み口
３３ ヒータ付捕集板
３４ ストッパー
３５ 水抜き用パイプ
３６ リブ
４０ モータ
５２ 筐体
３００ 長手方向(レール方向)
５００ 冷却風の流れ DESCRIPTION OF SYMBOLS 10 Rail vehicle 20 Car body 201 Side structure 202 Roof structure 203 Wife structure 204 Underframe 205 Pillow beam 21 Cart 211 Main motor cooling fan 212 Ventilation duct 213 Main motor 214 Wheel 215 Connection duct 30 Fan 31 Filter 32 Suction port 33 Heater trap Collection plate 34 Stopper 35 Drain pipe 36 Rib 40 Motor 52 Housing 300 Longitudinal direction (rail direction)
500 Cooling air flow

Claims (4)

鉄道車両の台枠の下面に配設される鉄道車両用主電動機冷却装置において、
前記車両用主電動機冷却装置は、吸込み口を備えた筐体と、該筐体内に配設された送風機と、該送風機から送風される冷却風を車両用主電動機に導く通風ダクトとから構成され、
前記吸込み口と前記送風機との間に、前記吸込み口と対向し、前記送風機により送風される空気の流れを横切る方向に延びる捕集板を設置し、慣性衝突を利用して前記吸込み口から冷却風とともに吸い込まれる雪を前記捕集板で捕集し、捕集した雪を該捕集板に設けたヒータにより融解して、前記筐体の外部へ排出するようにしたことを特徴とする鉄道車両用主電動機冷却装置。 In the railway car main motor cooling device disposed on the lower surface of the railcar frame,
The vehicular main motor cooling device includes a casing having a suction port, a blower disposed in the casing, and a ventilation duct for guiding cooling air blown from the blower to the vehicular main motor. ,
A collecting plate is installed between the suction port and the blower so as to face the suction port and extend in a direction crossing the flow of air blown by the blower, and is cooled from the suction port using inertial collision. The railway which collects the snow sucked together with the wind with the collecting plate, melts the collected snow with a heater provided on the collecting plate, and discharges it to the outside of the casing. Vehicle main motor cooling device. 前記捕集板を、前記送風機により送風される空気の流れに対し複数設けたことを特徴とする請求項１に記載された鉄道車両用主電動機冷却装置。   The rail motor main motor cooling device according to claim 1, wherein a plurality of the collecting plates are provided for a flow of air blown by the blower. 前記筐体の内部に配設される前記複数の捕集板を、前記筐体の前記吸込み口から該捕集板を経て前記送風機に至る流路をラビリンス構造となるように配置したことを特徴とする請求項２に記載された鉄道車両用主電動機冷却装置。   The plurality of collecting plates arranged inside the housing are arranged so that a flow path from the suction port of the housing to the blower through the collecting plate has a labyrinth structure. The main motor cooling device for a railway vehicle according to claim 2. 前記複数の捕集板を前記送風機により送風される空気の流れに対し斜めに取り付けたことを特徴とする請求項２または３に記載された鉄道車両用主電動機冷却装置。   The main motor cooling device for a railway vehicle according to claim 2 or 3, wherein the plurality of collecting plates are attached obliquely to a flow of air blown by the blower.
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