JPH0413261Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) This invention is a diesel electric locomotive equipped with various equipment such as a radiator, a diesel engine, a main generator, a blower for cooling the main motor, etc. Regarding the machine room.

(Prior art) Conventionally, in diesel electric locomotives, the fifth
As shown in the figure, a machine room 3 is adjacent to the driver's cab 2 in the front and back on the vehicle underframe 1 and is composed of an outer wall 4 called an engine hood.・Engine (hereinafter simply referred to as engine) 6, main generator 7, main motor cooling blower (hereinafter simply referred to as main blower) 8
Various types of equipment are installed, and these are connected directly or interlocked via transmission means such as joints and belts. The arrangement of each device is substantially fixed in terms of function and weight balance.

Here, the various devices in the machine room 3 are forcedly cooled, naturally cooled, or blown with clean air, and are configured to be capable of cooling or blowing air according to their respective functions.

In other words, since the radiator 5 requires forced cooling by the radiator fan 5a, a large number of large opening holes for intake and exhaust are provided in the outer wall 4 of the area where the radiator 5 is placed, so that outside air can freely enter and exit. has been done. For this reason, the part where the radiator 5 is placed is considered to be under almost the same conditions as the outside, and there is a lot of intrusion of rain and dust, so a partition wall 9 is provided to separate it from other parts as much as possible, and it becomes an independent radiator room 3a. I'm being forced to do it. And the part other than the radiator room 3a in the machine room 3 is designated as an engine room 3b,
Here, the engine 6, main generator 7, main blower 8
is installed. Since the main blower 8 in the engine compartment 3b is for forced ventilation cooling of the main electric motor (not shown) mounted at the bottom of the vehicle body,
It is necessary to blow filtered and dust-collected clean air, and for this purpose, an air filter 10 is provided on the outer wall 4 of the engine compartment 3b, and outside air is filtered and dust-collected and introduced, and this clean air is sent by the main blower 8. In addition to blowing air to the main motor through a duct, the engine 6 and main generator 7, which do not require forced cooling as much as the radiator 5, but require ventilation cooling, are ventilated with clean air in the engine compartment 3b. I'm trying to cool it down. The main generator 7 has a built-in ventilation cooling fan and has a self-ventilation cooling function of sucking cooling air into the interior through an intake port 7a at one end and exhausting the air through an exhaust port 7b at the other end.

The air flow in each part of the machine room 3 with such a configuration is as shown by the arrows in FIGS. 6 and 7.
Outside air is forcibly introduced into the radiator room 3a as cooling air by the radiator fan 5a, and outside air is introduced into the engine room 3b by suction from the main blower 8 while being filtered and dusted through the filter 10. A part of the air circulates within the air 3b and is blown to the main motor by the main air blower 8.

On the other hand, as shown in FIG. 8, in addition to the partition wall 9 of the radiator 5 section, a partition wall 9A is newly provided between the main generator 7 and the main blower 8, so that the radiator room 3a and A structure that is divided into three chambers, an engine chamber 3b and a main blower chamber 3c, is also being considered. In this configuration, outside air is forcibly introduced into the radiator room 3a as cooling air by the radiator fan 5a, and into the main blower room 3c, the outside air is filtered and dust-collected through the filter 10 by suction from the main blower 8. The outside air is introduced as cooling air and blown directly to the main motor, and outside air is introduced as cooling air into the intermediate engine compartment 3b by a means such as a blower fan (not shown) attached to the engine 6 or the main generator 7. It begins to circulate within the room.

(Problems to be solved by the invention) First, in the machine room 3 having a two-part structure shown in FIGS. However, the main blower 8 in the engine compartment 3b
The cooling air drawn in and sent to the main motor is not necessarily fresh outside air that has passed through the filter 10 on the outer wall 4, but also contains heat generated from the surface of the engine 6 and heat generated inside the main generator 7. The high temperature air that has been taken away by ventilation cooling is sucked into the main blower 8 and is blown to the main motor. This resulted in the problem of low cooling efficiency for the main motor. In particular, if the operating time of the engine 6 or main generator 7 is extended continuously, a considerable amount of heat will be generated.
In addition, if the outside air temperature rises by nearly 50 degrees Celsius, or if the outside wall 4 burns due to solar heat, the room temperature will become considerably high, and even if the main blower 8 sucks and blows the indoor high-temperature air, the main motor will It is not possible to efficiently cool the traction motor, which increases the load on the traction motor, which may lead to dielectric breakdown inside the traction motor, and failure of such traction motors is fatal to railway vehicles. This poses significant obstacles to railway operation.

On the other hand, in the machine room 3 having the three-part structure shown in FIG. 8, not only the air in the radiator room 3a but also the air in the engine room 3b does not flow into the main ventilation chamber 3c. For this reason, the main blower 8 sucks in and blows only fresh outside air that has passed through the filter 10 without being affected by the heat generated from the engine 6 or the main generator 7, thereby increasing the efficiency of the main motor. Although cooling is possible and the problem of the machine room 3 having a two-division structure described above can be solved, this three-division machine room has the following new problem. That is, first of all, since it is necessary to cool the engine 6 and the main generator 7, it is also necessary to have an outside air cooling air intake and circulation function in the intermediate engine compartment 3b where they are located. Since it is necessary to install a new blower fan, etc., and it is also necessary to prevent dust from entering the main generator 7, a filter with the function of filtering and collecting dust from outside air is installed on the outer wall of the engine compartment 3b. Is required. In addition, since it is essential to secure maintenance zones for the various equipment mentioned above, dividing the inside of the machine room 3 into three as described above will restrict the maintenance zones of each part due to the space, and in some cases, the machine room This leads to an increase in the size of the machine room 3, which also causes problems that affect the arrangement of various parts of the entire vehicle.In any case, this leads to a more complicated configuration and an increase in weight, making it impractical to divide the machine room 3 into three parts. It was scarce and unrealizable.

[Structure of the idea]

(Means for solving the problem) The machine room of the diesel electric locomotive of this invention is
If we look at the fundamentals of the functional conditions of each piece of equipment without being bound by conventional fixed ideas about equipment placement, we can eliminate the need to place the engine, which generates a lot of heat, in a room that has outside air filtration and dust collection functions together with the main blower. , we focused on the fact that the function of this engine can be cooled by outside air with a lot of dust, etc., and in view of this point, in order to completely solve the conventional problems completely, we first developed ventilation cooling that allows outside air to be freely taken into the machine room. A partition wall is installed to divide the room into a dust removal room where outside air is filtered and collected, and a radiator and diesel engine that require surface cooling among the various equipment mentioned above are installed in the ventilation cooling room. A blower for cooling the main motor that blows clean air into the room is provided, and the main generator is placed in a position spanning either or both of the ventilation cooling room and the dust removal room, and the cooling air inlet is located in the partition wall. A ventilation opening is provided on the dust removal chamber side and an exhaust port is opened on the ventilation cooling chamber side, and the cooling air in the ventilation cooling chamber and the exhaust air from the main generator's ventilation opening are differentiated and the exhaust air is guided to the outside. The present invention is characterized in that it is configured by providing a distribution plate to

(Function) With the above configuration, the main blower placed in the dust removal room is not affected by heat generated from other equipment, and draws only clean air made of filtered and collected fresh outside air to efficiently operate the main motor. The engine, which is placed together with a radiator in the ventilation cooling chamber, is effectively cooled together with the radiator by the air blowing action of the radiator fan.Furthermore, the main generator is cooled by the clean air inside the dust removal chamber. The interior is ventilated and cooled without being affected by dust, etc., and the exhaust air that takes away the internal heat is directly exhausted to the outside without adversely affecting others through the distribution plate. This allows for good cooling and ventilation of each device without any problems, and there is no need to add new ventilation fans, etc., and since the room is only divided into two by a partition wall, it is possible to secure a maintenance zone with less space. This eliminates problems such as complication of the structure, increase in size, and increase in weight.

(Embodiment) An embodiment of this invention will be described below with reference to FIGS. 1 to 4. Components in the drawings having the same configuration as those shown in FIGS. 5 to 8 are given the same reference numerals to simplify the explanation.

First, inside the machine room 3, which is constituted by the outer wall 4 on the vehicle body frame 1, a partition wall 12 is provided in the transverse direction, so that outside air can be taken in freely in the ventilation cooling room 13a, similar to the conventional radiator room 3a.
It is divided into a dust removal chamber 13b and a dust removal chamber 13b into which outside air is filtered and dust-collected by an air filter 10 and taken in similarly to the conventional main blower chamber 3c. Inside the machine room 3, a radiator 5, a diesel engine 6, a main generator 7,
Various devices such as a main blower 8 for cooling the main motor are provided.

That is, since the radiator 5 requires forced ventilation cooling of outside air, it is naturally arranged in the ventilation cooling chamber 13a.

In addition, regardless of this performance, the engine 6 has a structure that causes no problem even if it is directly exposed to outside air containing dust without being placed in a room with a dust removal function; rather, considering the surface cooling effect of the engine itself, A place with a lot of outside air ventilation is preferable. For this reason, the engine 6 is not isolated from the radiator chamber 3a as in the past, but
It is arranged in the ventilation cooling chamber 13a together with the radiator 5.

On the other hand, in order to cool the main motor, the main blower 8 needs to suck and blow clean air obtained by filtering and collecting fresh outside air.
The dust removal chamber 13b is provided with a dust removal chamber 13b.

Furthermore, since the main generator 7 is configured to use a self-ventilation fan to ventilate the inside of the casing for cooling, it is dangerous to directly take in outside air containing dust. If the exhaust air that has removed heat is drawn into the main blower 8, there is a problem in that the cooling efficiency of the main motor decreases. For this purpose, the main generator 7 is designed so that the cooling air suction port 7a is opened to the dust removal chamber 13b side of the partition wall 12, and the ventilation port 7b is opened to the ventilation cooling chamber 13a side. It is arranged at a position spanning both the chamber 13a and the dust removal chamber 13b. That is, a partition wall 12 is provided so as to cross the main generator 7 and divide the inside of the machine room 3 into two rooms.

Further, the exhaust air that passes through the main generator 7 and takes away heat exits the ventilation cooling chamber 13a, but if it continues as it is, the exhaust air with the heat will hit the surface of the engine 6 and cause the engine 6, a distribution plate 14 is installed in the ventilation cooling chamber 13a to separate the cooling air from the main generator 6 into the cooling air in the ventilation cooling chamber 13a and guide it to the outside of the machine room 3. It is provided with an appropriate distance from the partition wall 12.

In the machine room of a diesel electric locomotive having the above-mentioned structure, air flows in each part as shown by the arrows in FIGS. 2 and 3. That is, first, the radiator 5 and engine 6 on the vehicle end side of the machine room 3 are
The outside air is forcibly taken in as it is by the action of the radiator fan 5a into the ventilation cooling chamber 13a where the radiator 5 and the engine 6 are arranged.
The air flows vigorously over the surface and is efficiently cooled, and the air containing dust that has passed through the ventilation cooling chamber 13a exits outside without flowing into other chambers. On the other hand, only fresh outside air that has been filtered and collected through the air filter 10 on the outer wall 4 is introduced into the dust removal chamber 13b in which the main blower 8 is disposed, and the main blower 8 sucks only the clean air. The main motor is efficiently ventilated and cooled, and is no longer affected by heat generated from other equipment, as was the case in the past. In addition, the main generator 7, which is arranged so as to straddle the ventilation cooling chamber 13a and the dust removal chamber 13b, takes in only the clean air in the dust removal chamber 13b into the casing from the suction port 7a side, thereby preventing the harmful effects of dust and the like. The exhaust air that takes away the internal heat is discharged from the ventilation opening 7b to the ventilation cooling chamber 13a side through the partition wall 12, and does not go to the dust removal chamber 13b side. , this also does not affect the cooling air of the main blower 8. In addition, the exhaust air from the main generator 7 is distinguished from the cooling air in the ventilation cooling chamber 13a by the distribution plate 14 and is led out to the outside of the machine room 3, so that the exhaust air with heat hits the surface of the engine 6 and There is no possibility that the cooling performance of the engine 6 will be adversely affected.

With this, the cooling and ventilation actions according to the functions of each device in the machine room 3 can be achieved without any problems, and since the room is only divided into two by the partition wall 14, there is no need to add a new ventilation fan or the like. With no,
A sufficient maintenance zone can be secured in terms of space, and problems such as a complicated configuration, an increase in size, and an increase in weight can be avoided.

The structure of the partition wall 12 is shown in FIG. 4. First, the outer wall 4 of the machine room 3 and the common bed 15 that holds the main generator 7 are structurally and functionally unrelated. Since there is no compatibility when setting it on the upper surface of the vehicle body frame 1, a partition plate 12a with a large central opening is fixed to the inner peripheral surface of the outer wall 4 of the machine room 3, and the main power generator is installed in the common bed 15. The partition wall 12b arranged below the machine 7 is fixed. In this state, the outer wall 4 and the common bed 15 to which the main generator 7 is attached are installed on the upper surface of the vehicle body frame 1, and the partition plates 12a and 12 are fixed to both of them.
The configuration is such that there is inevitably a gap between the outlines of the main generator 7 and the main generator 7. After setting the outer wall 4 and the main generator 7 in this way, the adjustment plate 12c and the batten 12d are attached so as to close the gap, thereby forming the entire partition wall 12.

With the partition wall 12 having such a configuration, there is no need to remove or dismantle the entire partition wall 12 during periodic inspection or maintenance of onboard equipment such as the main generator 7, and only the minimum necessary adjustment near the center is required. The work can be easily completed by simply removing the board 12c and the batten 12d, and there are advantages in that the partition wall 12 can be easily restored after the inspection work.

[Effect of idea]

Since this idea was developed as described above, the traction motor cooling blower sucks and blows only clean air consisting of filtered and collected fresh outside air, without being affected by heat generated from other equipment, to cool the traction motor. Efficient ventilation cooling can be achieved, and causes of failure such as dielectric breakdown of the main motor can be removed, which can greatly contribute to improving the reliability of diesel electric locomotives. In addition, cooling ventilation for the diesel engine and main generator can be maintained without any problems, and problems such as adding a new blower fan or expanding the interior space can make the configuration complicated, larger, or heavier. This is a very effective machine room that eliminates the possibility of accidents.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention. Figure 1 is a plan view of the machine room with the upper part opened, and Figure 2 is a plane view showing the air flow in Figure 1. Figure 3 is a side view of the same, Figure 4 is a vertical sectional view of the machine room showing the partition wall from the front, Figure 5 is a view equivalent to Figure 1 showing the conventional example, and Figure 6 is the same conventional example. 7 is a side view of the conventional example, and FIG. 8 is a view corresponding to FIG. 1 showing a still different conventional example. 1... Vehicle underframe, 3... Machine room, 4... Outer wall,
5...Radiator, 5a...Radiator fan,
6... Diesel engine, 7... Main generator, 7
a...Cooling air intake port, 7b...Exhaust port, 8...
... Main motor cooling blower, 10... Air filter, 12... Partition wall, 13a... Ventilation cooling room,
13b...Dust removal room.

Claims (1)

[Scope of utility model registration request] In the machine room of a diesel electric locomotive, which is equipped with various equipment such as a radiator, diesel engine, main generator, main motor cooling blower, etc.
A partition wall is provided to divide the room into a ventilation cooling room where outside air is freely taken in, and a dust removal room where outside air is filtered and dust-collected and taken in, and the ventilation cooling room is provided with a partition wall that divides the room into a ventilation cooling room where outside air is freely taken in and a dust removal room where outside air is filtered and collected. A radiator and a diesel engine are arranged, a main motor cooling blower is provided to blow clean air into a dust removal chamber, and the main generator is arranged in a position spanning either or both of the ventilation cooling room and the dust removal room. The cooling air inlet is opened on the dust removal chamber side of the partition wall, and the ventilation outlet is opened on the ventilation cooling chamber side, and the cooling air in the ventilation cooling chamber and the exhaust from the main generator's ventilation opening are provided. A machine room for a diesel electric locomotive, characterized in that it is configured with a distribution plate that separates the exhaust air from the wind and directs the exhaust air to the outside.