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EP-4735821-A1 - HEAT EXCHANGER FOR AN AIR-CONDITIONING DEVICE FOR A TRACK-BOUND VEHICLE, AIR-CONDITIONING DEVICE, AND TRACK-BOUND VEHICLE

EP4735821A1EP 4735821 A1EP4735821 A1EP 4735821A1EP-4735821-A1

Abstract

The invention relates to a heat exchanger (100), in particular for an air-conditioning device (10) for a track-bound vehicle (1), comprising at least one refrigerant tube (110) and a plurality of lamellae (120) which are connected to the refrigerant tube (110) in order to transfer heat. The heat exchanger (100) has at least one cleaning tube (130) which is designed to provide a fluid F for cleaning the heat exchanger (100).

Inventors

  • HENKEL, Sven
  • HILDEBRANDT, ALEXANDER
  • PLINNINGER, Thomas

Assignees

  • Siemens Mobility GmbH

Dates

Publication Date
20260506
Application Date
20240731

Claims (11)

  1. 1. Heat exchanger (100), in particular for an air conditioning unit (10) for a track-guided vehicle (1), comprising at least one coolant pipe (110) and a plurality of fins (120) connected to the coolant pipe (110) for heat transfer, characterized in that the heat exchanger (100) has at least one cleaning pipe (130) which is designed to provide a fluid (F) for cleaning the heat exchanger (100).
  2. 2. Heat exchanger (100) according to claim 1, characterized in that the heat exchanger (100) has a coupling (140) fluidically connected to the cleaning pipe (130).
  3. 3. Heat exchanger (100) according to claim 2, characterized in that the coupling (140) is designed such that a fluid line (150) can be coupled to it.
  4. 4. Heat exchanger (100) according to claim 2 or 3, characterized in that the coupling (140) is a quick coupling.
  5. 5. Heat exchanger (100) according to one of the preceding claims, characterized in that the heat exchanger has a maintenance flap (142) which is arranged such that it covers the coupling (140) in the closed state and allows accessibility of the coupling (140) from outside the heat exchanger (100) in the open state.
  6. 6. Heat exchanger (100) according to one of claims 1 to 4, characterized in that the cleaning pipe (130) has at least one, preferably a plurality of, outflow openings (132) which are arranged such that a fluid (F) flowing out through them cleans the fins (120) of the heat exchanger (100).
  7. 7. Heat exchanger (100) according to one of the preceding claims, characterized in that the cleaning pipe (130) can be subjected to a fluid pressure of 2.5 MPa to 12.5 MPa, preferably of 5.0 MPa to 10.0 MPa.
  8. 8. Heat exchanger (100) according to one of the preceding claims, characterized in that the heat exchanger (100) has an optical inspection system (160), in particular a camera, for checking the cleaning state of the heat exchanger (100).
  9. 9. Heat exchanger (100) according to one of the preceding claims, characterized in that the heat exchanger (100) is a condenser.
  10. 10. Air conditioning unit (10) according to one of the preceding claims, characterized in that the air conditioning unit (10) has at least one heat exchanger (100) according to one of claims 1 to 9.
  11. 11. Track-guided vehicle (1) for passenger transport, comprising at least one heat exchanger (100) according to one of claims 1 to 9 or an air conditioning unit (10) according to claim 10.

Description

Description Heat exchanger for air conditioning unit for a rail-guided vehicle, air conditioning unit and rail-guided vehicle. The invention relates to a heat exchanger, in particular for an air conditioning unit for a rail-guided vehicle, comprising at least one coolant pipe and a plurality of fins connected to the coolant pipe for heat transfer. The invention relates to an air conditioning unit for a rail-guided vehicle for passenger transport, comprising such a heat exchanger or a heat exchanger further developed as described below. Furthermore, the invention relates to a track-guided vehicle for passenger transport, comprising at least one heat exchanger of this type or further developed as described below and/or at least one air conditioning unit of this type or further developed as described below. When operating air conditioning systems, large amounts of air are required in order to be able to release the heat energy of the refrigerant via the heat exchangers, particularly the condensers. Depending on the area of application and environmental conditions, the heat exchangers become dirty. The contaminants settle on the fins of the heat exchanger and thus prevent the heat from being transported from the refrigerant to the heat exchanger or condenser air. In the case of track-guided vehicles, such as rail vehicles, in order to remove contamination from the fins of the heat exchanger, the heat exchangers, in particular condensers, are cleaned annually using high-pressure cleaners in accordance with the state of the art. This means that This entails considerable costs (personnel costs, infrastructure costs, costs of transporting the vehicle to a depot, etc.). The work of cleaning the heat exchangers, in particular the condensers, is currently carried out by the operator of the rail-guided vehicle's personnel. Structural modifications to the heat exchangers or condensers are not known. Based on this, the object of the invention is to provide a heat exchanger which has improved maintainability. This object is achieved by the heat exchanger of claim 1. Furthermore, the object is achieved by the air conditioning device according to claim 10 and the track-guided vehicle according to claim 11. Advantageous embodiments and further developments are the subject of the respective subclaims. According to the invention, a heat exchanger is provided, in particular for an air conditioning unit for a track-guided vehicle. The heat exchanger comprises at least one coolant pipe and a plurality of fins connected to the coolant pipe for heat transfer. The heat exchanger has at least one cleaning pipe which is designed to provide a fluid for cleaning the heat exchanger. According to the invention, an air conditioning device is further provided which has at least one such heat exchanger or one further developed as described below. Furthermore, according to the invention, a track-guided vehicle for passenger transport is provided, comprising at least one heat exchanger of this type or further developed as described below or at least one air conditioning unit of this type or further developed as described below. The fluid is preferably an incompressible fluid, such as water or water with a cleaning agent. This achieves the best possible cleaning result. However, a compressible fluid such as air can also be used, which does not achieve as good a cleaning result as an incompressible fluid, but is permanently available in the form of compressed air, for example. Based on a suitable analysis of the degree of contamination of the heat exchangers, rail-guided vehicles only need to be brought to the depot for cleaning of the heat exchanger if the heat exchanger cleaning can no longer be postponed. The track-guided vehicle is, for example, a rail vehicle or a magnetic levitation train, preferably for the transport of people. The heat exchanger and/or the air conditioning unit can be part of an air conditioning system. The track-guided vehicle is, for example, a rail vehicle or a magnetic levitation train, preferably for the transport of people. In a further development of the heat exchanger, it can be provided that the heat exchanger has a coupling that is fluidically connected to the cleaning pipe. The coupling provides a means of ensuring that an externally pressurized cleaning pipeline is supplied with fluid. In the design of the heat exchanger, it can further be provided that the coupling is designed in such a way that a fluid line can be coupled to it. This means that a fluid line can be coupled to the coupling when the rail-guided vehicle is in the depot, for example. This makes maintenance easier. For example, a line from a high-pressure cleaner can be coupled to the coupling so that a fluid under pressure released by the high-pressure cleaner flows through the cleaning pipe. In an embodiment, it can further be provided that the coupling is a quick coupling. The quick coupling can, for example, have a plug-in closure, a screw