Abstract

An air-conditioning system for a vehicle suitable for flammable refrigerants of categories A2, A2L, and A3 is provided. The system is a compact piece of equipment for installation on a vehicle roof and has equipment sections for air treatment and a compressor-liquefier unit, and optionally an outgoing air, an electrical switchbox, and/or silencer. The system is a direct evaporating system in which the air to be conditioned for a passenger area is sealed off within the air-conditioning system such that, in the event of leaks at refrigerant-conducting assemblies, ingress of flammable refrigerant into the interior of the vehicle is prevented. The refrigerant-conducting assemblies and components are located outside the areas where comfort air is conducted, in a separate housing and open to the surroundings.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning

Abstract

A climate control system for a vehicle is suitable for combustible coolants and is a compact device for installation on a vehicle roof. A directly evaporating system includes an electrical switch box inside a compact climate control device for the vehicle and is partitioned so that, in the event of relevant leakages of assemblies containing coolant, the assembly cannot come into contact with the combustible coolant and no ignitable mixture can occur in these areas. The electrical box is a closed assembly and is operatively connected to an assembly by which air from areas outside the segments containing coolant is guided into the electrical box in such a way that a positive pressure is created in the electrical box to prevent combustible coolant from flowing into the electrical box.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning

Abstract

The invention relates to a climate control system for a rail vehicle, the climate control system being suitable for combustible coolants and being designed as a compact device for installation on the vehicle roof. The object of the invention is to produce a directly evaporating system in which the electrical switch box (electrical box) inside a compact climate control device for a rail vehicle is partitioned in such a way that, in the event of relevant leakages of assemblies containing coolant, this assembly cannot come into contact with the combustible coolant and thus no ignitable mixture can occur in these regions. This object is achieved in that the electrical box is designed as a completely closed assembly and is operatively connected to an assembly by which air from regions outside the segments of the climate control system containing coolant is guided into the electrical box in such a way that a positive pressure can be generated in the electrical box in order to prevent combustible coolant from flowing into the electrical box.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning

Abstract

The invention relates to an air-conditioning system for a rail vehicle, wherein the air-conditioning system is suitable for flammable refrigerants of categories A2, A2L and A3, is designed in the form of a compact piece of equipment for installation on the vehicle roof and at least has equipment sections for air treatment, section B, and a compressor-liquefier unit, section D, and optionally an outgoing air section A and/or an electrical switchbox C and/or silencer. The problem addressed by the invention is that of realising, for an air-conditioning system of this kind, a direct evaporating system, in which the air to be conditioned for the passenger area is sealed off within the air-conditioning system such that, in the event of leaks at refrigerant-conducting assemblies, ingress of flammable refrigerant into the interior of the vehicle is prevented. This problem is solved in that the refrigerant-conducting assemblies and components are located outside the areas where comfort air is conducted, in a separate housing and open to the surroundings, namely in that at least the mixed-air flaps (2) for outside air/ambient air, an air filter (3), the supply-air flaps (7), a supply-air fan (4), an evaporator (5), a heat register (6) of the air treatment section (B) and interfaces thereof to the outside air intake (a) and/or to the ambient air intake (b) and to the supply-air blow-out (e1 and/or e2) are located within air-tight or pressure-tight ducting in the housing of the air-conditioning system, which air-conditioning system is designed in the form of a compact piece of equipment.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning

Abstract

The invention relates to an air-conditioning system for a rail vehicle with at least one refrigeration machine and at least one cold reservoir unit which is configured as a PCM reservoir with phase change material, wherein the refrigeration power required for air-conditioning of the passenger compartment and the refrigeration power required for charging of the PCM reservoir are provided by means of the refrigeration machine, and wherein the cold stored in the PCM reservoir is, in selected operating states of the rail vehicle, fed to the assemblies for the air-conditioning of the passenger compartment. A problem addressed by the invention is that of configuring said air-conditioning system such that such a large amount of cold can be conducted from a phase change material of the PCM reservoir into the passenger compartment that, during relatively long periods of travel in tunnels, the refrigeration machine, which is designed for generating cold, of the air-conditioning system is substantially deactivated and thus the release of relatively large amounts of heat from the rail vehicle in the tunnel is avoided. This problem is solved by virtue of the cooling circuit being divided into a primary circuit with a refrigerant and a secondary circuit with a water-glycol mixture, wherein said two circuits are each assigned specific assemblies, by means of the operative connection and mode of operation of which, during traveling operation outside a tunnel, the refrigeration machine primarily charges the cold reservoir unit with cold, and wherein, during non-operation of the refrigeration machine, the cold energy stored in the cold reservoir unit is fed to the water heat exchanger.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning
• F24F 5/00 - Air-conditioning systems or apparatus not covered by group or

Abstract

The invention relates to an air-conditioning system for a rail vehicle with at least one refrigeration machine and at least one cold reservoir unit which is configured as a PCM reservoir with phase change material, wherein the refrigeration power required for air-conditioning of the passenger compartment and the refrigeration power required for charging of the PCM reservoir are provided by means of the refrigeration machine, and wherein the cold stored in the PCM reservoir is, in selected operating states of the rail vehicle, fed to the assemblies for the air-conditioning of the passenger compartment. A problem addressed by the invention is that of configuring said air-conditioning system such that such a large amount of cold can be conducted from a phase change material of the PCM reservoir into the passenger compartment that, during relatively long periods of travel in tunnels, the refrigeration machine, which is designed for generating cold, of the air-conditioning system is substantially deactivated and thus the release of relatively large amounts of heat from the rail vehicle in the tunnel is avoided. This problem is solved by virtue of the cooling circuit being divided into a primary circuit with a refrigerant and a secondary circuit with a water-glycol mixture, wherein said two circuits are each assigned specific assemblies, by means of the operative connection and mode of operation of which, during traveling operation outside a tunnel, the refrigeration machine primarily charges the cold reservoir unit with cold, and wherein, during non-operation of the refrigeration machine, the cold energy stored in the cold reservoir unit is fed to the water heat exchanger.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning
• F24F 5/00 - Air-conditioning systems or apparatus not covered by group or

Abstract

The invention relates to a heat exchanger for flammable refrigerants, preferably for a rail vehicle, the heat exchanger having a hollow cuboid housing in the interior of which refrigerant lines are situated, which are designed as a tube-and-fin pack or as a tube-in-tube and fin pack. The hollow cuboid housing is provided with fins on the inside of a closed side face, and at least a portion of the outside of said closed side face can be brought into operative connection with the passenger compartment. The problem addressed by the invention is that of creating a heat exchanger of this type with which the existing safety risks of previous heat exchangers are avoided so that secondary circuits can be omitted and a direct system can be implemented instead. This problem is solved in that the hollow cuboid housing is designed as a module which can be partitioned off from the passenger compartment in a gas-tight manner, wherein only permanently sealed sections of the refrigerant lines are situated in the interior of the hollow cuboid housing, the connection points of which refrigerant lines are each situated completely outside the hollow cuboid housing, and the hollow cuboid housing is provided with at least one sealing frame and/or with at least two sealing plates such that, when the heat exchanger is fixed in the installation position, the connections of the refrigerant lines are situated in a region which is sealed off from the passenger compartment and is ventilated outwards to the surroundings.

IPC Classes  ?

• F28D 1/047 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag

Abstract

The invention relates to a heat exchanger for flammable refrigerants, preferably for a rail vehicle, the heat exchanger having a hollow cuboid housing in the interior of which refrigerant lines are situated, which are designed as a tube-and-fin pack or as a tube-in-tube and fin pack. The hollow cuboid housing is provided with fins on the inside of a closed side face, and at least a portion of the outside of said closed side face can be brought into operative connection with the passenger compartment. The problem addressed by the invention is that of creating a heat exchanger of this type with which the existing safety risks of previous heat exchangers are avoided so that secondary circuits can be omitted and a direct system can be implemented instead. This problem is solved in that the hollow cuboid housing is designed as a module which can be partitioned off from the passenger compartment in a gas-tight manner, wherein only permanently sealed sections of the refrigerant lines are situated in the interior of the hollow cuboid housing, the connection points of which refrigerant lines are each situated completely outside the hollow cuboid housing, and the hollow cuboid housing is provided with at least one sealing frame and/or with at least two sealing plates such that, when the heat exchanger is fixed in the installation position, the connections of the refrigerant lines are situated in a region which is sealed off from the passenger compartment and is ventilated outwards to the surroundings.

IPC Classes  ?

• F28D 1/047 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag

Abstract

The invention relates to an electro-mechanical filter system for cleaning air in rail vehicles, wherein the air is supplied to and discharged from areas occupied by people by means of heating, ventilation and air-conditioning systems, wherein the filter system comprises an electro-mechanical filter, which is arranged in a housing through which an air flow can flow, and which has an assembly for electro-static charging of the particles contained in the air, in combination with a mechanical filter element, The object of the invention is to create a filter system of this type, which permits an effective filtering of very small particles, such as fine dust and bacteria, as well as an inactivation/killing of viruses, via the use of a specifically configured electro-mechanical filter. The object is achieved in that the electro-mechanical filter consists of an ionisation unit (IE), a separator unit (AE) arranged downstream in the flow direction, and a DC/DC converter (7), wherein the ionisation unit (IE) has two electrodes, with which an electric field can be generated, in which the air flow (LS) or the particles contained therein obtain an electro-static charge, wherein the separator unit (AE) has a combi-filter element consisting of a filter fleece (3) and an activated carbon layer (4) arranged downstream in the flow direction, and wherein the DC/DC converter (7) is supplied with the control voltage of the rail vehicle.

IPC Classes  ?

• F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
• F24F 7/007 - Ventilation with forced flow
• F24F 13/28 - Arrangement or mounting of filters
• B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• B01D 46/50 - Means for discharging electrostatic potential
• B03C 3/017 - Combinations of electrostatic separation with other processes, not otherwise provided for
• B03C 3/04 - Plant or installations having external electricity supply dry type
• B60H 3/06 - Filtering

Abstract

The invention relates to a device for combined pressure-protection and air-flow control in the interior of high-speed rail vehicles, wherein the functions of pressure protection and air flow can be realized by means of a common assembly, which controls the free flow cross-section of air intake openings and/or air blow-out openings in accordance with concrete operating conditions. The problem addressed by the invention is that of creating a corresponding device that requires a small installation space and a low number of separate assemblies and that ensures fast and functionally reliable control even at high speeds of travel. This problem is solved in that the device has a housing (2) that is pressure-tight against pressure shocks up to a size of ±10 kPa, which housing is designed having an opening (3) on the lateral surface of the housing opposite the base surface, a flap element (4) being associated with said opening (3), wherein the flap element (4) is supported by means of a shaft (5), which extends parallel to the longitudinal direction of the flap element, on the housing (2) at both end segments of the shaft (5) and is pivotably arranged along said shaft (5) in such a way that the opening (3) can be closed in a pressure-tight manner starting from each position of the flap element (4), wherein a drive assembly (7) is associated with the flap element (4), which drive assembly is operatively connected, for exact positioning of the flap element (4) with repeat accuracy, to an electric drive (8) in such a way that a closing operation can be performed within ≤ 50 ms starting from each position of the flap element (4) and wherein the electric drive (8) is connected to a control element, which independently establishes a defined end position for the flap element (4) in the currentless state.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning

Abstract

The invention relates to an air-conditioning system for rail vehicles, wherein all components necessary for air-conditioning the passenger compartment, in particular compressor, condenser, fan, filters, heating elements, sensor systems and controller are structurally integrated into an equipment tray arranged on the vehicle roof and wherein this equipment tray enclosed by a casing is arranged in a free construction space on the vehicle roof in such a manner that it forms part of the roof shape inside the contour of the rail vehicle. The task of the invention is to create an air conditioning system that is suitable in particular for rail vehicles used as underground railways. The problem is solved by a specific design of the components for air handling and air distribution, as a result of which high-quality air-conditioning is guaranteed even during prolonged travel in tunnels.

IPC Classes  ?

• B61D 27/00 - Heating, cooling, ventilating, or air-conditioning