CN209521693U - Rail vehicle - Google Patents

Abstract

The utility model relates to a kind of rail vehicle, at least one traction element is included, the traction element can be cooling by means of drawing cooling facility (1)；And air conditioner facility, the air conditioning of its passenger inner space for being used for rail vehicle and have fluidly connected with passenger inner space and from rail vehicle draw exhaust steam passage (9), wherein drawing cooling facility (1) includes heat exchanger (2), the heat exchanger is directed over by means of air outlet slit side (7) of the surrounding air (5) of blower module (3) suction from the air inlet side (6) of heat exchanger to heat exchanger, heat exchanger (2) to be cooled down, wherein outlet end (10) setting of the exhaust steam passage (9) of air conditioner facility is in the air inlet side (6) of heat exchanger for drawing cooling facility (1), so that blower module (3) suction is located at the exhaust gas in exhaust steam passage (9), cause exhaust mass stream so that drawing cooling facility (1) and work as exhaust gas apparatus.

Description

rail vehicle

technical field

The utility model relates to a rail vehicle.

Background technique

Accordingly, a rail vehicle is known which has: at least one traction element which can be cooled by means of a traction cooling device; The interior is air-conditioned and has an exhaust air duct which is fluidly connected to the passenger interior and leads from the rail vehicle, wherein the traction cooling installation comprises a heat exchanger, from the air inlet side of which the ambient air is sucked in by means of a fan module to The air outlet side of the heat exchanger is directed through the heat exchanger to cool down the heat exchanger.

Therefore, as described above, in conventional rail vehicles there are various devices for cooling the at least one traction component on the one hand and for drawing room air out of the passenger interior of the rail vehicle. For maintaining the operation of the traction components, a traction cooling installation is typically provided under the floor, by means of heat exchangers of which the cooling fluid for the traction components is cooled. The traction component can be, for example, a converter, but also a transformer.

In contrast to this, the exhaust system draws air from the passenger interior and directs the air outside the vehicle.

Utility model content

Against this background there is the general aim of reducing the complexity of the fluidic equipment in rail vehicles.

Said object is achieved by the features according to the invention in the rail vehicle mentioned at the beginning, said rail vehicle having: at least one traction element, said traction element can be cooled by means of traction cooling means; and air conditioning means, said An air-conditioning system is provided for air-conditioning a passenger interior of the rail vehicle and has an exhaust air duct fluidly connected to the passenger interior and leading from the rail vehicle, wherein the traction cooling system comprises a heat exchanger, Ambient air drawn in by means of a fan module is guided through the heat exchanger from the air inlet side to the air outlet side of the heat exchanger in order to cool the heat exchanger, wherein it is specified , the outlet end of the exhaust air channel of the air conditioning facility is arranged on the air inlet side of the heat exchanger of the traction cooling facility, so that the fan module sucks the exhaust air located in the exhaust air channel so that The traction cooling system brings about an exhaust gas mass flow and operates as an exhaust system.

Accordingly, in rail vehicles it is proposed that the outlet of the exhaust air duct of the air conditioning system be arranged on the air inlet side of the heat exchanger of the traction cooling system, so that the fan module draws in the exhaust air located in the exhaust air duct, so that the traction cooling system causes Exhaust gas mass flow and work as exhaust system.

According to this approach, it is not necessary to consider the exhaust system used in the prior art as a separate component of the rail vehicle. Rather, the traction cooling system assumes the function of an exhaust gas system for removing exhaust gases from the passenger interior of the rail vehicle. For this purpose, it may be necessary to design the traction cooling system to be larger with respect to the performance of its fans/fan arrangements compared to conventional traction cooling systems.

This results in the advantage of saving installation space in the underfloor region of the rail vehicle. It should also be expected to reduce the overall cost, electrical power consumption and overall mass of the rail vehicle.

Preferably, at a preset minimum rotational speed of the fan module, the outlet of the exhaust air duct is arranged on the air inlet side of the heat exchanger of the traction cooling system and the geometry of the exhaust air duct can be designed such that depending on the vehicle interior The exhaust gas mass flow necessary for the air conditioning requirements of the air conditioning system is drawn off at the lowest rotational speed. This also ensures that sufficient exhaust air can be drawn away from the vehicle interior when the electric traction components currently have no cooling requirements and the fan module is operated at a preset minimum rotational speed.

Advantageously, the exhaust gas mass flow in the exhaust gas line can be controllable. This makes it possible to react to possible especially high demands on the cooling performance of the traction components, which may also occur temporarily, for example. In this case, the exhaust gas mass flow can be reduced so that more ambient air is sucked in by the fan module, so that a greater cooling of the electric traction components can be achieved by the traction cooling facility.

The exhaust gas mass flow can be controllable, for example, by means of rotatable air flaps which are integrated into the exhaust gas duct in order to achieve different free cross sections of the exhaust gas duct. If, for example, the temperature of the electric traction components to be cooled is monitored and the monitoring results in an increased cooling requirement being detected, the rotatable air flap can reduce the free cross section within the exhaust air duct so that despite the increased rotational speed of the fan module, However, the exhaust gas mass flow remains essentially unchanged.

In general, the exhaust gas mass flow can be controlled as a function of the operation-related cooling demand of at least one traction component for the traction cooling installation.

Monitoring of the exhaust gas mass flow in the exhaust gas duct can be carried out by means of an air mass sensor.

Description of drawings

An embodiment of the present utility model is described in more detail below with reference to the accompanying drawings. The single figure shows a schematic block diagram with a traction cooling system for a rail vehicle with components interacting therewith.

Detailed ways

As shown in the figures, a traction cooling installation 1 , for example used in rail vehicles, comprises a heat exchanger 2 and a fan module 3 . In the exemplary embodiment, the fan module 3 has a fan impeller 4 which draws ambient air 5 towards the air inlet side 6 of the heat exchanger 2 and guides it through the heat exchanger 2 , thereby heating the environment The air leaves the heat exchanger 2 on the air outlet side 7 .

The heat exchanger 2 can be an air/fluid heat exchanger, wherein the fluid is a cooling fluid for the electric traction components to be cooled (eg converter, transformer) and the cooling fluid flows through the traction cooling circuit.

With suitable flow guidance, the ambient air passing through the heat exchanger 2 leaves the traction cooling installation 1 in the blown air stream 8 .

The traction cooling plant 1 also serves as an exhaust system. To this end, the exhaust air duct 9 leads from the passenger interior of the rail vehicle to the air inlet side 6 of the heat exchanger 2 . The outlet end 10 of the exhaust air duct 9 is arranged directly on the air inlet side 6 of the heat exchanger 2, so that the fan module 3 generates a negative pressure at the outlet end 10 of the exhaust air duct 9, which negative pressure causes the air to be drawn from the passenger interior. The sucked air 11 likewise passes through the heat exchanger 2 and is added to the air flow 8 of blown air. For this purpose, it may be necessary to retrofit conventional traction cooling installations with respect to the performance of their fan modules 3 in such a way that at the same time the heat exchanger 2 for the electric drive components can be cooled and the exhaust air can also be removed from the vehicle interior. lead out.

For the operation of the traction cooling system, the cooling function of the electric drive components has priority in principle. In the event, for example, of sudden increased cooling requirements for the electric drive components, the exhaust gas mass flow can be kept constant despite the increased power of the fan module 3 . For this purpose, an air mass sensor 12 is provided in the exhaust gas channel 9 , by means of which the magnitude of the exhaust gas mass flow in the exhaust gas channel 9 can be monitored and measured. The magnitude of the exhaust gas mass flow can be suitably controlled by means of the air valve 13 inserted into the exhaust gas channel 9 , wherein the remaining free cross section of the exhaust gas channel 9 can be set. To this end, the air flap 13 is rotatably suspended and controllable according to the cooling requirements for the electric drive components.

The fan module 3 is controlled with respect to the rotational speed of its fan wheel 4 according to the cooling requirements of the electric drive components. Generally, the control is carried out such that the rotational speed of the fan wheel 4 increases to such an extent that the functions of "exhaust gas system" and "traction cooling facility" can be fulfilled at the same time when the cooling demand increases. As soon as the cooling requirements of the electric drive components increase so that an excessively high exhaust gas mass flow results, the air flap 13 is actuated to reduce the free cross section of the exhaust gas duct 9 .

A minimum rotational speed is preset for the fan module 3 , which is provided even when there is no cooling requirement for the electric traction components. In this case, the traction cooling installation 1 is primarily used as an exhaust system. For this purpose, the geometry of the exhaust gas channel 9 is designed (flow resistance of the channel) such that the preset minimum rotational speed of the fan module is sufficient to satisfy the requirements for air conditioning of the vehicle interior for the air conditioning system, ie the exhaust gas mass flow required for this Generated by fan module 3.

Claims (10)

1. A rail vehicle having: at least one traction element, which can be cooled by means of a traction cooling device (1); The passenger interior of the vehicle is air-conditioned and has an exhaust air duct (9) fluidly connected to the passenger interior and leading from the rail vehicle, wherein the traction cooling facility (1) comprises a heat exchanger (2) by means of The ambient air (5) drawn in by the fan module (3) is guided through the air inlet side (6) of the heat exchanger (2) to the air outlet side (7) of the heat exchanger (2) Described heat exchanger, to the described heat exchanger (2) cools down, It is characterized in that, The outlet end (10) of the exhaust air channel (9) of the air conditioning facility is arranged on the air inlet side (6) of the heat exchanger (2) of the traction cooling facility (1) such that the fan The module (3) draws in the exhaust gas located in the exhaust gas duct (9), so that the traction cooling device (1) induces an exhaust gas mass flow and operates as an exhaust gas system. 2. A rail vehicle according to claim 1, It is characterized in that, At the preset minimum rotational speed of the fan module (3), the outlet end (10) of the exhaust gas passage (9) is arranged at the heat exchanger (2) of the traction cooling facility (1) On the air inlet side (6) and the exhaust gas duct (9) is geometrically designed such that the exhaust gas mass flow required for the air conditioning of the air conditioning system according to the requirements of the vehicle interior can be drawn off at the lowest rotational speed. 3. A rail vehicle according to claim 1 or 2, It is characterized in that, The exhaust gas mass flow in the exhaust gas line is controllable. 4. A rail vehicle according to claim 3, It is characterized in that, The exhaust gas mass flow is controllable by means of a rotatable air flap (13), which is inserted into the exhaust gas channel (9) in order to achieve different free traverses of the exhaust gas channel (9). section. 5. A rail vehicle according to claim 3, It is characterized in that, The exhaust gas mass flow is controlled in dependence on the operation-related cooling demand of the traction cooling installation (1) by at least one of the traction components. 6. A rail vehicle according to claim 4, It is characterized in that, The exhaust gas mass flow is controlled in dependence on the operation-related cooling demand of the traction cooling installation (1) by at least one of the traction components. 7. The rail vehicle of claim 3, It is characterized in that, The exhaust gas mass flow is monitored by means of an air mass sensor (12). 8. The rail vehicle of claim 4, It is characterized in that, The exhaust gas mass flow is monitored by means of an air mass sensor (12). 9. The rail vehicle of claim 5, It is characterized in that, The exhaust gas mass flow is monitored by means of an air mass sensor (12). 10. The rail vehicle of claim 6, It is characterized in that, The exhaust gas mass flow is monitored by means of an air mass sensor (12).