JPH08253140A - Ventilating device for rolling stock - Google Patents

Abstract

PURPOSE: To improve reliability and durability by reducing the number of operation times of pressure relieving mechanisms. CONSTITUTION: Respective pressure relieving mechanisms 2 and 11 are arranged in the vicinity of a fresh air intake port 1 and a polluted air discharge port 12, and a pressure change outside of a rolling stock is detected by a pressures sensor 13, and the ventilating passage area is changed through a control device 14, and propagation into a rolling stock is restrained by detecting it only when a pressure change outside of the rolling stock is particularly large such as when the rolling stock travels at high speed in a tunnel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle ventilator, and more particularly to a vehicle ventilator suitable for a railway vehicle traveling at high speed in a tunnel.

[0002]

2. Description of the Related Art Conventionally, a pressure relief device for a vehicle ventilation device used for a railroad vehicle traveling at a high speed corresponds to a pressure difference between the inside and outside of a vehicle as described in, for example, Japanese Patent Application Laid-Open No. 05-254428. There is a bending plate that changes the area of the ventilation path by means of a holding means that holds the bending plate at the maximum deformation position of the bending plate and that damps the vibration of the bending plate in the ventilation path.

[0003]

The prior art described above has a structure in which an elastic body or a flexible plate which is cantilevered so as to change the ventilation passage area in response to a pressure difference inside or outside the company is deformed. However, even if a slight pressure difference between the inside and outside the company is generated, the operation is performed more frequently, and there is a problem that the cantilever support portion causes fatigue failure.

Further, even if a slight pressure difference between the inside and outside of the company is generated, the elastic body or the flexible plate is deformed, so that the ventilation passage area is frequently reduced, the ventilation volume is reduced, and the carbon dioxide concentration in the vehicle is reduced. There was a problem of rising.

On the other hand, when the train is stopped at the station or during the forwarding operation, there is almost no pressure difference between the inside and outside of the train, so the elastic body or the flexible plate is not deformed, and the ventilation area is the maximum, so the ventilation volume is also the maximum. There was a problem that the ventilation load of the vehicle body heat load increases.

Further, when a failure condition occurs in which the operation is fixed while the elastic body or the flexible plate is deformed, the mechanism of the conventional pressure relief device cannot detect the failure condition. There was a problem that the pressure fluctuated significantly and the door could not open.

It is an object of the present invention to suppress the operation of the pressure relief mechanism to the minimum necessary frequency within the range where passengers do not feel uncomfortable, thereby improving the durability and reliability of the vehicle. To provide.

[0008]

The object is to provide an air supply device for supplying air outside the vehicle to the inside of the vehicle and an exhaust device for discharging contaminated air inside the vehicle to the outside of the vehicle, and to detect pressure fluctuations outside the vehicle with a pressure detector. This is achieved by providing a pressure relief mechanism in the air supply and exhaust ventilation passages with a control device that changes the area of both the air supply and exhaust ventilation passages when the pressure setting value is exceeded.

[0009]

When the pressure fluctuation outside the vehicle is detected by the pressure detector, a signal is input from the pressure detector to the control device, and the control device changes the ventilation passage area of the pressure relief device. When the pressure outside the vehicle exceeds the set value, the ventilation passage area of the pressure relief device is reduced. As a result, the pressure relief device does not fluctuate in the range of small pressure fluctuations within the range where passengers do not feel uncomfortable, so the operation of the pressure relaxation mechanism can be suppressed to the minimum necessary frequency. The durability and reliability of the relaxation mechanism can be improved.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a vehicle body sectional view showing a vehicle ventilation device of the present invention. In FIG. 1, 3 is an air supply blower, and 1 is a fresh outside air intake for taking in outside air into the blower. Reference numeral 2 is a pressure relief mechanism mounted on an upstream ventilation passage closer to the inlet than the air supply blower 3. Reference numeral 4 is a vehicle body duct for supplying fresh air from the air supply blower 3 to the air conditioner 5. Reference numeral 6 is a discharge port for supplying conditioned air from the air conditioner 5 to the passenger compartment 7. Reference numeral 8 denotes an exhaust port opened at the bottom of the passenger compartment 7 for discharging polluted air inside the vehicle to the outside of the vehicle. Reference numeral 9 denotes a vehicle body duct for sending polluted air from the exhaust port 8 to the exhaust blower 10. Reference numeral 10 denotes an exhaust blower for discharging the polluted air sent from the vehicle body duct 9 to the outside of the vehicle. Reference numeral 11 denotes a pressure relief device mounted on a ventilation passage on the downstream side closer to the outlet than the exhaust blower 10. 12 is the pressure relief device 1
It is an outlet for discharging the contaminated air that has passed through 1 to the outside of the vehicle. Reference numeral 13 is a pressure sensor for detecting pressure fluctuations. Reference numeral 14 is a control device for inputting the signal sent from the pressure sensor 13 and changing the ventilation passage areas of the pressure relief mechanisms 2 and 11.

FIG. 2 shows the operating conditions of the pressure relief mechanisms 2 and 11. When the pressure sensor 13 detects a pressure fluctuation value that is a condition for changing the ventilation passage area, the information is transmitted from the pressure sensor 13 to the control device 14. The control device 14 to which the information is input uses the electric wire 23 and
2 outputs a command for changing the ventilation passage area. The electromagnetic valve 22 to which the command is sent sends air to the air pipe 21 and sends air to the cylinder body 17. When the air is sent to the cylinder body 17, the cylinder 15 moves up and down, and accordingly, the air volume adjusting plate 16 also moves up and down, so that either one of the openings 19 and 20 is opened to change the ventilation passage area. It will be. The position of the cylinder 15 is detected by the sensor 18. When the sensor 18 detects the position of the cylinder, it sends the information to the control device 14 using the electric wire 24. If the command 23 output from the control device 14 and the information 24 input from the sensor 18 do not match, or if there is any other abnormality, the electric wire 2
6 is used to output failure information. In addition, when the train is stopped at a station or during forwarding operation, the information control device uses the electric wire 25 to input the information to the control device 14, and a command for changing the ventilation passage area is supplied via the electric wire 23 to the solenoid valve. 22 to change the ventilation passage area. Here, arrow A in the figure indicates fresh air, and A indicates the flow of contaminated air.

In the pressure relieving mechanisms 2 and 11 constructed as described above, as shown in FIG. 3, a sudden positive or negative pressure fluctuation from the outside of the vehicle, such as the area A or the area B, is applied, and the pressure fluctuation width is increased. When the set value which is a condition for changing the ventilation passage area is reached, the pressure sensor 13 detects the pressure fluctuation and the information is sent to the control device 14 to change the ventilation passage area of the pressure relaxation mechanisms 2 and 11. be able to. As a result, when the pressure fluctuation width is small, the pressure relaxation mechanism does not operate, so the number of operations is reduced, and reliability and durability can be improved.

FIG. 4 illustrates how either an abnormally large pressure change or a very fast pressure can cause passenger discomfort. The X region is a tolerable region and the Y region is a discomfort region, but the line between them represents the beginning of discomfort. In this way, the pressure fluctuation within the vehicle is set within the region X in FIG. 4, and the set value of the pressure fluctuation width, which is a condition for performing the control for changing the ventilation passage area, is set to the operation number of the pressure relaxation mechanisms 2 and 11. By setting the optimum value so that it can be suppressed to the necessary minimum, it is possible to realize a pressure relief mechanism that improves durability and reliability, suppresses pressure fluctuations in the vehicle, and secures a comfortable indoor space. it can.

As described above, according to the present embodiment, there is provided a vehicle ventilation device including a pressure detecting device having a sensor for detecting pressure fluctuations outside the vehicle and a control device for changing the ventilation passage area by taking in information from the sensor. When a sensor installed in the vehicle detects pressure fluctuation, a signal is input from the sensor to the control device and acts to change the ventilation passage area of the pressure relief device from the control device. It suppresses the propagation of fluctuations to the inside of the vehicle, secures a comfortable interior space, and suppresses the operation of the pressure relief mechanism to the necessary minimum number of times within the range where passengers do not feel discomfort, so durability and reliability As a result, electricity consumption and air consumption can be reduced.

Further, the control device fetches a necessary signal from the information control device and changes the ventilation passage area,
When the ventilation volume is suppressed to reduce the air conditioning heat load and noise, such as when the train is stopped at a station or during forwarding operation, necessary signals are input from the information control device to the control device and the pressure relief device It acts to change the area of the ventilation passage, and can reduce the air-conditioning heat load and noise.

Further, a control device for changing the ventilation passage area and a sensor for detecting the change in the ventilation passage area are provided,
A signal from a sensor that detects the area of the ventilation passage installed inside the pressure relief device is input to the control device, and it is judged whether or not it matches the command issued to the pressure relief device from the control device. In the case, the failure information can be easily detected by outputting the failure information. Further, when the ventilator fails, the failure state can be detected and the failure information can be output when necessary, so that a large fluctuation of the pressure inside the vehicle can be suppressed and the business operation can be prevented.

The present embodiment further has the following features. (1) An air supply device for supplying air outside the vehicle to the vehicle interior and an exhaust device for discharging polluted air inside the vehicle to the outside of the vehicle are provided,
A vehicle ventilating device comprising a pressure relief mechanism having a control device for detecting pressure fluctuations outside the vehicle for both of exhaust gas and changing a ventilation passage area. (2) In the vehicle ventilator of (1) above, by having a control device that changes the ventilation passage area by detecting the pressure fluctuation only when the pressure fluctuation is particularly large, the operation of the pressure relaxation mechanism is the minimum required. Ventilation device for vehicles, which is characterized by improving durability and reliability by suppressing it to the limit.

(3) The control device of the above (1) has a function capable of setting the pressure fluctuation value outside the vehicle, which is a condition for changing the ventilation passage area, to an optimum value so that passengers do not feel uncomfortable. Ventilation device for vehicles characterized by. (4) In the control device of (1) above, in order to reduce the air conditioning heat load and noise by suppressing the ventilation volume, such as when the train is stopped at the station or during the forwarding operation, a necessary signal is taken in from the information control device. A vehicle ventilator having a function of changing a road area. (5) In the control device of the above (1), a vehicle ventilation device characterized by having a function of storing a failure content when the ventilation device fails and outputting failure information when necessary.

[0019]

According to the present invention, the operation of the pressure relief mechanism can be suppressed to a necessary minimum frequency within the range where passengers do not feel discomfort, and the durability and reliability of the pressure relief mechanism are improved. be able to.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a vehicle body equipped with a vehicle ventilation device of the present invention.

2 is a configuration diagram showing a control mechanism of the pressure relief mechanism of FIG. 1. FIG.

FIG. 3 is a diagram showing a pressure fluctuation state at the time of passing each other in a tunnel during high-speed traveling of a railroad vehicle, in terms of a relationship between an exterior pressure and time.

FIG. 4 is an allowable limit diagram of earlobe.

[Explanation of symbols]

1 ... Fresh air intake, 2, 11 ... Pressure relief mechanism, 3,
10 ... Blower, 4, 9 ... Body duct, 5 ... Air conditioner, 6
Air-conditioning outlet, 7 ... Guest room, 8 ... Guest room air outlet, 12 ...
Contaminated air outlet, 13 ... Pressure sensor, 14 ... Control device,
Reference numeral 15 ... Cylinder, 16 ... Air volume adjusting plate, 17 ... Cylinder body, 18 ... Cylinder position detection sensor, 19, 20 ... Opening portion, 21 ... Air pipe, 22 ... Solenoid valve, 23-26 ... Electric wire.

Claims (1)

[Claims] 1. An air supply device for supplying air outside the vehicle to the inside of the vehicle and an exhaust device for discharging polluted air inside the vehicle to the outside of the vehicle, wherein pressure fluctuations outside the vehicle are detected by a pressure detector and a pressure set value is exceeded. A ventilator for a vehicle, characterized in that a pressure relief mechanism having a control device for changing both the air supply passage and the exhaust air passage area in a direction to be narrowed is provided in the air supply passage and the exhaust air passage.