EP4117974A1 - Klimaanordnung und damit ausgestattetes fahrzeug zur personenbeförderung - Google Patents
Klimaanordnung und damit ausgestattetes fahrzeug zur personenbeförderungInfo
- Publication number
- EP4117974A1 EP4117974A1 EP21708122.3A EP21708122A EP4117974A1 EP 4117974 A1 EP4117974 A1 EP 4117974A1 EP 21708122 A EP21708122 A EP 21708122A EP 4117974 A1 EP4117974 A1 EP 4117974A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant
- air
- air conditioning
- treatment device
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
Definitions
- Air conditioning arrangement and vehicle equipped with it for passenger transport are provided.
- the invention relates to an air conditioning system for a vehicle for passenger transport, with a refrigeration circuit that has a compressor, a condenser with associated condenser fan, an expansion valve and an evaporator and is operated with a first refrigerant, and with egg ner air treatment device that has a Fan for conveying conditioned air in an interior of the vehicle has, as well as a vehicle equipped with such an air conditioning system for passenger transport.
- the evaporator of the refrigeration circuit is often used as a so-called “direct evaporator” and is functionally part of the air treatment device, which is used to provide conditioned air for a passenger compartment or driver's cab of the vehicle, which can in particular be a rail vehicle.
- the placement of the evaporator in the air treatment device results in restrictions with regard to the refrigerants that can be used in the air conditioning system.
- refrigerants with a global warming potential of ⁇ 150 are often classified as risky, as they either work under very high operating pressures, are flammable and explosive and / or, such as R1234YF, produce toxic / caustic gases when burned.
- refrigerant line in the vicinity of the evaporator has a leak and coolant emerges from this leak.
- This can be set on fire, for example, by electrically operated components, such as the fan for conveying the conditioned supply air, with an additional fluid Getting Connected for the supply air from the air handler means exists to the interior of the vehicle. This makes it possible for the coolant that has leaked out of the leak, which may also be set on fire, to spread into the interior of the vehicle. This is to be avoided for security reasons.
- the invention is based on the object of further developing the air conditioning system of the type mentioned at the outset in such a way that the risks when using refrigerants with a global warming potential ⁇ 150 are reduced, as well as specifying a vehicle whose low risk air conditioning system also uses a refrigerant with a Global warming potential ⁇ 150 can be operated.
- the air conditioning arrangement mentioned at the beginning is characterized in that the first refrigerant for operating the refrigeration circuit has a global warming potential ⁇ 150, the evaporator of the refrigeration circuit is designed for thermal interaction of the first refrigerant with a second refrigerant different from the first refrigerant and is integrated in an intermediate circuit , which comprises a cooler through which the second Käl tesch flows and which forms part of the air treatment device, the air treatment device and portions of the intermediate circuit adjoining it being hermetically sealed against the rest of the air conditioning arrangement.
- the refrigeration circuit of the air conditioning arrangement can be operated without further ado with a refrigerant which can be selected from the group comprising carbon dioxide, propane, a hydrofluoro-olefin or mixtures thereof.
- the second refrigerant can be, for example, water glycol, a glycol mixture or a suitable brine mixture.
- other fluids can possibly also be used, as long as it is guaranteed that they do not entail any health or other risks for people in the interior of the vehicle even if they leak from a leak in the intermediate circuit.
- the evaporator can preferably be formed as a plate heat exchanger. This is advantageously itself hermetically sealed, both in terms of the outlet of the two coolants to the outside and a spatial separation between tween the two coolants used.
- the air treatment device can advantageously have an air filter arranged between the fan for conveying conditioned supply air and the cooler of the intermediate circuit. It is also conceivable that the air treatment device has a heating device for reheating the supply air passing through the cooler.
- the intermediate circuit can in particular have a pump for conveying the second refrigerant from the evaporator to the cooler. It can also be advantageous if the intermediate circuit for the second coolant has an expansion tank, so that the operating conditions in the intermediate circuit remain sufficiently constant for the operation of the intermediate circuit even when the thermal boundary conditions change.
- the air conditioning system shown in the figure which can for example be arranged on the roof of a rail vehicle, comprises a refrigeration circuit 1 and an intermediate circuit 2.
- the refrigeration circuit 1 is operated with a first coolant, which is, for example, R-1234YF / R290 .
- the first coolant is one that has a global warming potential of ⁇ 150.
- the refrigeration circuit 1 comprises a compressor 3, a condenser 4 with an associated condenser fan 5 for cooling the condenser 4 and an expansion valve 6.
- the air conditioning system is to be used for air conditioning a driver's cab of a rail vehicle.
- the compressor 3 can then have an output of 6 kW.
- a comparable air conditioning arrangement can also be used in passenger cars. In this case, the performance of the compressor 3 will be in a clearly heard area.
- the refrigeration circuit 1 is completed by a plate heat exchanger 7, which is installed at that point within the refrigeration circuit 1 at which there is typically a Ver evaporator.
- the plate heat exchanger 7 is hermetically sealed to the outside and creates a reliable spatial separation between the first refrigerant and a second refrigerant (water glycol) with which the intermediate circuit 2 is operated.
- an input temperature To of -5 ° C. to + 5 ° C. is present in the exemplary embodiment presented.
- the second refrigerant which is water glycol, has a temperature of 0 to + 10 ° C.
- the second refrigerant is conveyed to a cooler 9 by means of a pump 8.
- the cooler 9 is part of an air treatment device 10 which, in addition to the cooler 9, has a fan 11 for conveying conditioned supply air, namely through an air filter 12 past the cooler 9 and through a post-heating device 13.
- the dashed line around the cooler 9 is intended to illustrate the connection between the cooler 9 and the refrigeration circuit 1.
- the air treatment device 10 directs supply air directly into a driver's cab 14 (illustrated by a dashed line), from which the supply air continues to a passenger compartment 15, which is merely indicated in the figure.
- the incoming air can have a temperature of 8 to 15 ° C.
- the second refrigerant returns to the plate heat exchanger 7, specifically conveyed by the pump 8 in the intermediate circuit 2.
- An expansion tank 16 ensures stable operation of the intermediate circuit 2 when the thermal boundary conditions change.
- the air treatment device 10 which includes the fan 11, the air filter 12, the cooler 10 and the after-heating device 13, is hermetically sealed to the outside. Therefore, in the event that the refrigerant circuit 1 shows a leak and the first refrigerant escapes from the leak, the first refrigerant cannot enter the air handling device 10, in particular not the driver's compartment 14 and the passenger compartment 15. In particular, any housing penetrations the air treatment device 10 for the intermediate circuit is also hermetically sealed.
- the overall air conditioning system is housed in the roof area of the rail vehicle.
- the supply air arrives via suitable Air conditioning ducts in the driver's cab 14 and the passenger compartment 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020202956 | 2020-03-09 | ||
| PCT/EP2021/052963 WO2021180404A1 (de) | 2020-03-09 | 2021-02-08 | Klimaanordnung und damit ausgestattetes fahrzeug zur personenbeförderung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4117974A1 true EP4117974A1 (de) | 2023-01-18 |
| EP4117974C0 EP4117974C0 (de) | 2024-03-27 |
| EP4117974B1 EP4117974B1 (de) | 2024-03-27 |
Family
ID=74758738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21708122.3A Active EP4117974B1 (de) | 2020-03-09 | 2021-02-08 | Klimaanordnung und damit ausgestattetes fahrzeug zur personenbeförderung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4117974B1 (de) |
| ES (1) | ES2986165T3 (de) |
| WO (1) | WO2021180404A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010001929B4 (de) * | 2010-02-15 | 2014-06-18 | Konvekta Ag | Kälteanlage zur Kühlung eines umschlossenen Raumes |
| FR2995389B1 (fr) * | 2012-09-13 | 2017-10-20 | Alstom Transport Sa | Dispositif de climatisation d'air, notamment pour un vehicule ferroviaire |
| DE102013203240A1 (de) * | 2013-02-27 | 2014-08-28 | Siemens Aktiengesellschaft | Kältemaschine und Verfahren zum Betreiben einer Kältemaschine |
| DE202014010264U1 (de) * | 2014-01-09 | 2015-02-25 | Siemens Aktiengesellschaft | Fahrzeug mit einer Kompressionskältemaschine |
| FR3102010B1 (fr) * | 2019-10-15 | 2022-06-03 | Arkema France | Procédé de régulation de la température d’une batterie comprenant un sel de lithium |
-
2021
- 2021-02-08 ES ES21708122T patent/ES2986165T3/es active Active
- 2021-02-08 WO PCT/EP2021/052963 patent/WO2021180404A1/de not_active Ceased
- 2021-02-08 EP EP21708122.3A patent/EP4117974B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2986165T3 (es) | 2024-11-08 |
| EP4117974C0 (de) | 2024-03-27 |
| EP4117974B1 (de) | 2024-03-27 |
| WO2021180404A1 (de) | 2021-09-16 |
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