JP2009234546A - Cooling apparatus for railway vehicle and railway vehicle having the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling apparatus for railway vehicle, capable of attaining noise reduction and structural simplification. <P>SOLUTION: The cooling apparatus for cooling a plurality of electric apparatuses installed on a railway vehicle is provided with: a boxlike housing 40 having an intake port 46 and a plurality of exhaust ports 47a, 47b, 47c, and installed inside the railway vehicle; a suction port stored in the housing and communicating with the intake port, respectively; and a plurality of air blowers 42a, 42b, 44a having a discharge port communicating with the exhaust port. The suction port communicates with the outside of the railway vehicle, and each exhaust port communicates with the electric apparatus through a duct. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cooling device for a railway vehicle that cools an electrical device provided in the railway vehicle, and a railway vehicle including the same.

  Railway vehicles that run on rails, such as electric locomotives, electric diesel locomotives, main converters provided inside the vehicles, oil coolers for transformers, control devices, main motors provided under the floor, etc. Various electric devices that generate heat by operation are provided. In order to cool such an electric device that generates heat, forced draft cooling in which cooling air is sent from the blower to the electric device is employed.

When performing such forced-air cooling, a blower suitable for each electrical device is usually provided for each electrical device. That is, the number of blowers corresponding to the number of electrical devices that require cooling is provided in a manner scattered around the railway vehicle (for example, Patent Document 1).
Japanese Examined Patent Publication No. 62-16863

  However, when a blower is provided for each electrical device as described above, the number of blowers increases, which requires a large installation space and causes an increase in weight. It is necessary to install a blower with different performance for each electric device. Moreover, since it is necessary to comprise the ventilation path for air intake for every air blower, and since several air blowers are scattered, a noise countermeasure becomes difficult.

  The performance of the blower can be adjusted by changing the number of rotations of the drive motor. However, when a blower is installed for each electrical device, it is not necessary to vary the performance of the blower. Driven with performance.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a cooling device for a railway vehicle that can reduce noise and simplify the structure.

  A cooling device according to an aspect of the present invention is a cooling device that cools a plurality of electrical devices installed in a railway vehicle, and has a suction port and a plurality of exhaust ports, and is a box-shaped device installed in the rail vehicle. And a plurality of blowers each having a suction port that communicates with the intake port and a discharge port that communicates with the exhaust port, wherein the intake port is the railway vehicle. The exhaust port communicates with the electrical equipment through a duct.

  According to this aspect of the present invention, a cooling device for a railway vehicle that can reduce noise and simplify the structure can be obtained by arranging a plurality of fans in a single housing.

Hereinafter, a rail vehicle provided with a cooling device according to an embodiment of the present invention, for example, an electric locomotive will be described in detail with reference to the drawings.
FIG. 1 is a side view schematically showing the electric locomotive according to the first embodiment, and FIG. 2 is a cross-sectional view showing a part of the electric locomotive. As shown in FIGS. 1 and 2, an electric locomotive 10 as a railway vehicle includes a pair of carriages 16 each provided with wheels 14, and a vehicle body 17 supported on the carriage via a spring 15. ing. A main motor 18 is placed in the vicinity of the wheel 14 on each carriage 16. The main motor 18 is connected so that rotational force can be transmitted to the wheels 14 through a gear box and a coupling (not shown). The wheel 14 is placed on the rail 13.

  A pantograph 19 is provided on the ceiling side of the vehicle body 17, and this panda graph is in contact with the overhead wire 20. Various underfloor devices 23 are installed under the floor of the vehicle body 17. The electric power supplied from the overhead line 20 to the pantograph 19 is sent to other electric equipment to be described later, then converted from direct current to alternating current, and supplied to each main motor 18 through a wiring (not shown). The main motor 18 is driven by the supplied electric power, and rotates the wheel 14 through the gear box and the coupling, whereby the electric locomotive 10 travels on the rail 13.

  FIG. 3 is a plan view showing the floor plate of the vehicle and various electric devices installed on the floor plate, FIG. 4 is a longitudinal sectional view showing a part of the vehicle including the floor plate, and FIG. 5 is a diagram of the vehicle including the floor plate. It is a longitudinal cross-sectional view which shows another one part. FIG. 6 is a cross-sectional view of the cooling device, and FIG. 7 is a plan view of the cooling device.

  As shown in FIGS. 1 to 3, the vehicle body 17 is laid over the entire surface of the vehicle body frame 24, which is formed of a steel material, the vehicle body 26 mounted on the vehicle body frame, and the vehicle body frame. And a floor plate 28 constituting the floor of the vehicle body. The vehicle body 26 has a pair of side walls 26a, a ceiling wall 26b, and a pair of end walls that respectively stand on the vehicle body frame 24 and extend in the longitudinal direction of the vehicle body. It is provided to cover.

  As shown in FIG. 2 to FIG. 5, various electric devices are installed on the floor plate 28 in the vehicle main body 26, and among these electric devices, cooling that cools electric devices that require cooling is performed. A device 30 is provided. As the electrical equipment, a first electrical equipment that generates a large amount of heat and requires a relatively large amount of cooling air, and a second electrical equipment that requires a relatively small amount of cooling air are provided. In the present embodiment, a plurality of, for example, two main converters 32a and 32b that convert alternating current and direct current, respectively, are mounted on the floor plate 28 as the first electric device, and four main resistors are provided as the second electric device, for example. A container 34 or the like is placed on the floor board. Each main motor 18 that drives the wheel 14 is included in the second electric device.

  The cooling device 30 is installed in the center in the longitudinal direction of the floor board 28. The two main converters 32 a and 32 b are arranged on both sides of the cooling device 30 on the floor board 28. Two main resistors 34 are arranged on the floor plate 28, two on each side of the cooling device 30.

  As shown in FIGS. 6 and 7, the cooling device 30 includes, for example, a housing 40 formed in a rectangular box shape, and a plurality of, for example, four fans 42 a, 42 b, 44 a, which are housed in the housing, and have different performances. 44b. The housing 40 is installed on the floor board 28. As a soundproofing measure, a sheet-like sound absorbing material 45 is laid on the inner surface of the housing 40.

  An intake port 46 is formed on one side wall 40a of the housing 40, and four exhaust ports 47a, 47b, 47c, 47d corresponding to the blowers are formed on the bottom wall 40b. The side wall 40a of the housing 40 faces the side wall 26a of the vehicle body 26, and a plurality of intake holes 27 are formed in the side wall 26a. The intake port 46 of the housing 40 communicates with the outside of the vehicle body 26 via the intake duct 48 and the intake hole 27.

  The blowers 42a and 42b are composed of, for example, a turbofan, and have a relatively small air volume and high air pressure. The blowers 42a and 42b are arranged in order on the bottom wall of the housing 40 in the same direction with respect to the intake port 46, and the suction ports communicate with the intake port 46, respectively. The discharge ports of the blowers 42a and 42b communicate with the exhaust ports 47a and 47b of the housing 40 through the duct 51, respectively. In addition, you may arrange | position the air blowers 42a and 42b on an anti-vibration structure, respectively.

  The blowers 44a and 44b are composed of, for example, an axial fan and have a relatively large air volume and a low air pressure. The blowers 44 a and 44 b are provided on the opposite side of the blowers 42 a and 42 b with respect to the air inlet 46. The blowers 44 a and 44 b are attached to the inner surface of the side wall of the housing 40, and are arranged next to each other with their shafts extending in a direction perpendicular to the bottom wall 40 b of the housing 40. The suction ports of the blowers 44a and 44b communicate with the intake port 46, respectively, and the discharge ports communicate with the exhaust ports 47c and 47d of the housing 40 via the duct 53, respectively.

  As shown in FIG. 6, the intake port 46 of the housing 40 is provided with a plurality of adjustment plates 50 that adjust the amount and direction of cooling air suction. Further, in the housing 40, a plurality of guide plates 52a and 52b for guiding the cooling air sucked from the air inlet 46 to the respective fans 42a, 42b, 44a and 44b are provided. The guide plate 52a extends substantially horizontally between the ceiling wall 40c of the housing 40 and the blowers 42a and 42b, and guides the cooling air sucked from the air inlet 46 to the blower 42a and guides it to the blowers 44a and 44b. The guide plate 52b is provided between the blower 42a and the blower 42b, and guides cooling air to the suction port side of the blower 42b. Note that the cooling air is guided directly from the intake port 46 to the intake port of the blower 42 a by the adjusting plate 50.

  As shown in FIGS. 2 to 6, exhaust ports 47 a, 47 b, 47 c, 47 d formed in the bottom wall of the housing 40 are respectively communicated with a plurality of openings formed in the floor plate 28 of the vehicle body 26. . The exhaust port 47 a communicating with the blower 42 a communicates with a plurality of electric devices, here, the main converter 32 a and the two main motors 18 through the ventilation duct 56. The exhaust port 47 b communicating with the blower 42 b communicates with a plurality of electric devices, here, the main converter 32 b and the two main motors 18 through the ventilation duct 58. The ventilation ducts 56 and 58 extend under the floor and are branched into a plurality of flow paths on the way to be connected to each electric device.

  The exhaust port 47 c communicating with the blower 44 a communicates with the two main resistors 34 through the ventilation duct 60. The exhaust port 47 d communicating with the blower 44 a communicates with the other two main resistors 34 through the ventilation duct 60. Each main resistor 34 communicates with the outside of the vehicle main body 26 from the ceiling wall 26 b side through the exhaust duct 63.

  In the electric locomotive 10 configured as described above, by driving the fans 42a and 42b and the fans 44a and 44b, cooling air (outside air) passes through the intake holes 27, the intake duct 48, and the intake port 46 of the vehicle body 26. The air is sucked into the housing 40, and this cooling air (cooling air) is guided by the adjusting plate 50 and the guide plates 52a and 52b and sent to the blowers 42a, 42b, 44a and 44b. By providing the adjusting plate 50 and the guide plates 52a and 52b as described above, even when the fans 42a, 42b, 44a, and 44b having different capacities are operated, the cooling air can be smoothly guided to the fans.

  The cooling air sent from the blower 42a is supplied to the main converter 32a and the two main electric motors 18 through the ventilation duct 56 to cool them. The cooling air sent from the blower 42b is supplied to the main converter 32b and the two main motors 18 through the ventilation duct 58 to cool them. The cooling air sent from the blower 44a is supplied to the two main resistors 34 through the ventilation duct 60 to cool them. The cooling air sent from the blower 44b is supplied to the two main resistors 34 through the ventilation duct 62 to cool them.

  According to the electric locomotive equipped with the cooling device 30 configured as described above, a plurality of blowers are aggregated and arranged in one housing 40, whereby a soundproofing measure, for example, a sound absorbing material 45 is provided in the housing 40. By providing this, the noise of a plurality of blowers can be easily reduced. At the same time, the structure of the cooling device 30 can be simplified. In addition, the installation area of the cooling device in the vehicle body can be reduced. Furthermore, it is not necessary to provide an intake opening for each blower, and it is sufficient that at least one opening is provided in the housing. Therefore, noise can be further reduced.

Next, the cooling device according to the second embodiment will be described.
As shown in FIG. 8, according to 2nd Embodiment, the cooling device 30 is provided with the some inverter 64 which controls the drive of an air blower, respectively. These inverters 64 are provided side by side on the inner surface of the ceiling wall 40c in the housing 40, and are electrically connected to the corresponding blowers. The inverter 64 has cooling fins 66 provided so as to hit the cooling air flowing along the guide plate 52a, and is arranged so as to be cooled by the cooling air flowing in the housing 40.

  In the second embodiment, the other configuration of the cooling device and the configuration of the electric locomotive are the same as those of the first embodiment described above, and the same parts are denoted by the same reference numerals and detailed description thereof will be given. Is omitted.

  According to the second embodiment, the same function and effect as those of the first embodiment described above can be obtained. Further, the inverter 64 can control the operating frequency of each blower to an optimum value according to the cooling load of the equipment to be cooled. Thereby, it is possible to use a blower having an optimum capacity without making each blower larger than necessary. Therefore, it is possible to reduce the size of the blower and the cooling device as a whole, and to reduce power consumption. In addition, by varying the operating frequency of the blower by the inverter 64 and adjusting the blowing function force, it becomes possible to standardize the cooling device, that is, to use a common cooling device for railway vehicles of various specifications.

Next, a cooling device according to a third embodiment will be described.
As shown in FIG. 9, according to 3rd Embodiment, the cooling device 30 is provided with the some inverter 64 which controls the drive of an air blower, respectively. These inverters 64 are provided side by side on the inner surface of the ceiling wall 40c in the housing 40, and are electrically connected to the corresponding blowers. The guide plate 52a extends from the air inlet 46 of the housing 40 in parallel with the ceiling wall 40c of the housing with a gap. Further, a partition plate 52c extending in parallel with the guide plate 52a with a gap is provided in the housing 40, and this partition plate extends over the blowers 42a and 42b.

  The inverter 64 has cooling fins 66 provided so as to hit the cooling air flowing between the guide plate 52a and the partition plate 52c, and is arranged so as to be cooled by the cooling air flowing in the housing 40.

  In the present embodiment, the motors of the fans 42 a and 42 b are driven by a common electric motor 43. Two second air inlets 46b (only one of which is shown) are formed in the ceiling wall 40c of the housing 40, and face the blowers 44a and 44b, respectively. The blowers 44 a and 44 b communicate with the second air inlet 46 b through a connecting duct 55 that partitions the inside of the housing 40. The second intake ports 46b of the housing 40 communicate with the outside of the vehicle through intake ducts 48b and intake holes (not shown) formed in the vehicle body 26.

  In the third embodiment, the other configuration of the cooling device and the configuration of the electric locomotive are the same as those of the first embodiment described above, and the same reference numerals are given to the same portions and the detailed description thereof will be given. Is omitted.

  According to the cooling device 30 configured as described above, the cooling air (outside air) is supplied through the intake holes, the intake duct 48 and the intake port 46 of the vehicle body 26 by driving the fans 42a and 42b and the fans 44a and 44b. The air is sucked into the housing 40, and this cooling air (cooling air) is guided by the adjusting plate 50, the guide plate 52a, and the partition plate 52c and sent to the blowers 42a and 42b. Further, the cooling air is sucked into the housing 40 through the intake hole, the intake duct 48 b and the intake port 46 b of the vehicle body 26, and this cooling air is sent to the blowers 44 a and 44 b through the connection duct 55.

  The cooling air sent from the blowers 42a and 42b is supplied to desired electrical equipment through the ventilation ducts 56 and 58 to cool them. The cooling air sent from the blowers 44a and 44b is supplied to desired electrical equipment through the ventilation ducts 60 and 62 to cool them.

  According to the cooling device 30 configured as described above, by arranging a plurality of blowers in a single housing 40, a plurality of soundproofing measures, for example, by providing a sound absorbing material 45, a plurality of fans can be provided. The noise of the blower can be easily reduced. At the same time, the structure of the cooling device 30 can be simplified. In addition, it is possible to reduce the installation area of the cooling device in the railway vehicle.

  By providing the adjusting plate 50, the guide plate 52a, the partition plate 52c, and the connecting duct 55, even when the fans 42a, 42b, 44a, and 44b having different capacities are operated, the cooling air can be smoothly guided to the fans. .

  Further, the inverter 64 can control the rotational frequency of each blower to an optimum value according to the cooling load of the equipment to be cooled. Thereby, it is possible to use a blower having an optimum capacity without making each blower larger than necessary. Therefore, it is possible to reduce the size of the blower and the cooling device as a whole, and to reduce power consumption.

  The present invention is not limited to the above-described embodiment, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. Some constituent elements may be deleted from all the constituent elements shown in the embodiments, or constituent elements over different embodiments may be appropriately combined.

  For example, the number of fans installed in the housing is not limited to the above-described embodiment, and can be increased or decreased as necessary. The electric device to be cooled is not limited to the above-described embodiment, and may be another electric product such as an oil cooler or a filter reactor. The blower is not limited to the upper plate of the floor board but can be installed on the lower plate. The soundproof material may be provided not only on the inner surface side of the housing but also on the outer surface side.

FIG. 1 is a side view showing an electric locomotive according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the electric locomotive along line AA in FIG. FIG. 3 is a plan view of the electric locomotive showing the internal structure with the vehicle body of the electric locomotive omitted. FIG. 4 is a cross-sectional view showing a floor board, a cooling device, and electric equipment of the electric locomotive. FIG. 5 is a cross-sectional view showing a floor board, a cooling device, and electric equipment of the electric locomotive. FIG. 6 is a cross-sectional view showing a cooling device. FIG. 7 is a plan view of the cooling device. FIG. 8 is a cross-sectional view showing a cooling device according to a second embodiment of the present invention. FIG. 9 is a sectional view showing a cooling device according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Electric locomotive, 14 ... Wheel, 16 ... Bogie, 17 ... Car body, 18 ... Main motor,
24 ... body frame, 26 ... vehicle body, 28 ... floor board, 30 ... cooling device, 40 ... housing, 42a, 42b, 44a, 44b ... blower, 45 ... sound absorbing material, 46 ... inlet,
46b ... second intake port, 48, 48b ... intake duct,
47a, 47b, 47c, 47d ... exhaust port, 50 ... adjustment plate,
52a, 52b ... guide plate, 56, 58, 62 ... ventilation duct,

Claims (7)

A cooling device for cooling a plurality of electric devices installed in a railway vehicle,
A box-shaped housing that has an air inlet and a plurality of air outlets and is installed in the railway vehicle;
A plurality of blowers housed in the housing, each having a suction port communicating with the intake port and a discharge port communicating with the exhaust port;
The cooling device in which the air intake port communicates with the outside of the railway vehicle, and the air exhaust port communicates with the electric device through a duct.   The cooling device according to claim 1, further comprising a guide plate that is provided in the housing along a flow of outside air sucked into the housing from the air inlet and guides the sucked outside air to the air inlet of the blower. .   The cooling device according to claim 2, further comprising: a plurality of inverters that are provided in the housing and are connected to the blower and control driving of the blower.   4. The cooling device according to claim 3, wherein each of the inverters has a cooling fin provided along the guide plate so as to hit outside air flowing along the guide plate. 5.   The cooling device according to claim 1, wherein the housing has another intake port, and one of the blowers communicates with the other intake port via a connection duct provided in the housing.   The cooling device according to claim 1, further comprising a sound absorbing material provided along an inner surface of the housing.   The cooling device according to claim 1, wherein the duct communicating with the exhaust port branches in the middle and communicates with a plurality of electric devices.

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