EP4117974B1 - Agencement de climatisation et véhicule de transport de passagers équipé de celui-ci - Google Patents

Agencement de climatisation et véhicule de transport de passagers équipé de celui-ci Download PDF

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Publication number
EP4117974B1
EP4117974B1 EP21708122.3A EP21708122A EP4117974B1 EP 4117974 B1 EP4117974 B1 EP 4117974B1 EP 21708122 A EP21708122 A EP 21708122A EP 4117974 B1 EP4117974 B1 EP 4117974B1
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EP
European Patent Office
Prior art keywords
air
refrigerant
conditioning arrangement
treatment device
arrangement according
Prior art date
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Active
Application number
EP21708122.3A
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German (de)
English (en)
Other versions
EP4117974C0 (fr
EP4117974A1 (fr
Inventor
Alexander Hildebrandt
Irfan KASAP
Bernd Schnell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility GmbH
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Siemens Mobility GmbH
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Publication date
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Publication of EP4117974A1 publication Critical patent/EP4117974A1/fr
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Publication of EP4117974C0 publication Critical patent/EP4117974C0/fr
Publication of EP4117974B1 publication Critical patent/EP4117974B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies

Definitions

  • 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 an associated condenser fan, an expansion valve and an evaporator and is operated with a first refrigerant, and with an air treatment device that has a fan for Conveying conditioned supply air into an interior of the vehicle, as well as on a vehicle equipped with such an air conditioning system for transporting people.
  • 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 supply air for a passenger interior or driver's compartment of the vehicle, which can in particular be a rail vehicle.
  • the air treatment device which is used to provide conditioned supply air for a passenger interior or driver's compartment of the vehicle, which can in particular be a rail vehicle.
  • accommodating 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 ⁇ 150 are often classified as risky because they either work under very high operating pressures, are flammable and explosive and/or even, such as R1234YF, produce toxic/corrosive gases when burned.
  • there is a high risk potential if a refrigerant line near the evaporator has a leak and coolant escapes 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 connection for the supply air from the air treatment device to the interior of the vehicle. This makes it possible for the coolant that has escaped from the leak, which may also have caught fire, to spread into the interior of the vehicle. This should be avoided for security reasons.
  • the invention is based on the object of further developing the air conditioning arrangement of the type mentioned in such a way that the risks when using refrigerants with a global warming potential ⁇ 150 are reduced, as well as to provide a vehicle whose air conditioning arrangement with a low risk can also be used with 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 the thermal interaction of the first refrigerant with a second refrigerant that is different from the first refrigerant and is integrated into an intermediate circuit , which comprises a cooler through which the second refrigerant flows, which forms part of the air treatment device, wherein the air treatment device and sections of the intermediate circuit adjacent to it are hermetically sealed from the rest of the air conditioning arrangement.
  • the refrigeration circuit of the air conditioning arrangement can easily be operated with a refrigerant which can be selected from the group that includes 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. If necessary, other fluids can also be used for the second refrigerant, provided that it is guaranteed that they do not pose any health or other risks to people in the interior of the vehicle even if they escape from a leak in the intermediate circuit.
  • the evaporator can preferably be designed as a plate heat exchanger. This is advantageously hermetically sealed itself, both in terms of the exit of the two coolants to the outside and a spatial separation between 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 arrangement shown in the figure which can be arranged, for example, 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 ⁇ 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 arrangement is intended to be used for air conditioning of 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 within a clearly defined value range.
  • the refrigeration circuit 1 is completed by a plate heat exchanger 7, which is installed at the point within the refrigeration circuit 1 where an evaporator is typically located.
  • 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.
  • a second refrigerant water glycol
  • the second refrigerant which is water glycol, has a temperature of 0 to +10 ° C.
  • the second refrigerant is subjected to such a temperature and 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 of the cooler 9 to the refrigeration circuit 1.
  • the air treatment device 10 introduces supply air directly into a driver's compartment 14 (illustrated by a dashed line), from which the supply air continues to a passenger interior 15, which is only indicated in the figure.
  • the supplied air can have a temperature of 8 to 15°C.
  • the second refrigerant returns to the plate heat exchanger 7, namely conveyed by the pump 8 in the intermediate circuit 2.
  • An expansion tank 16 ensures stable operation of the intermediate circuit 2 under changing thermal conditions.
  • the air treatment device 10 which includes the fan 11, the air filter 12, the cooler 10 and the afterheating device 13, is hermetically sealed from the outside. Therefore, in the case when the refrigeration circuit 1 shows a leak and the first refrigerant emerges from the leak, the first refrigerant cannot enter the air treatment device 10, in particular not into the driver's compartment 14 and the passenger interior 15. In particular, any housing bushings of the air treatment device 10 also hermetically sealed for the intermediate circuit.
  • the air conditioning system as a whole is housed in the roof area of the rail vehicle.
  • the supply air comes via suitable Air conditioning ducts in the driver's compartment 14 and the passenger compartment 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (8)

  1. Agencement de conditionnement d'air pour un véhicule de transport des personnes comprenant un circuit (1) frigorifique, qui a un compresseur (3), une soupape (6) de détente et un évaporateur (7) et qui fonctionne avec un premier fluide frigorigène, et comprenant un dispositif (10) de traitement de l'air, qui a un ventilateur (11) pour refouler de l'air d'apport conditionné dans un espace (14, 15) intérieur du véhicule,
    dans lequel l'évaporateur (7) du circuit frigorifique est constitué pour l'interaction thermique du premier fluide frigorigène avec un deuxième fluide frigorigène différent du premier fluide frigorigène et est intégré dans un circuit (2) intermédiaire, qui comprend un refroidisseur (9), dans lequel passe le deuxième fluide frigorigène et qui forme une partie du dispositif (10) de traitement de l'air,
    caractérisé en ce que
    le condenseur du circuit (1) frigorifique a un ventilateur (5) de condenseur, qui lui appartient, en ce que le premier fluide frigorigène a, pour le fonctionnement du circuit (1) frigorifique, un potentiel de réchauffement planétaire < 150,
    dans lequel le dispositif (10) de traitement de l'air et des parties, qui en sont voisines, du circuit (2) intermédiaire sont étanches hermétiquement par rapport au reste de l'agencement de conditionnement d'air.
  2. Agencement de conditionnement d'air suivant la revendication 1,
    caractérisé en ce que
    le premier fluide frigorigène est choisi dans le groupe qui comprend le dioxyde de carbone, le propane, une hydrofluoroléfine ou leurs mélanges et le deuxième fluide frigorigène est de l'eau glycolée.
  3. Agencement de conditionnement d'air suivant la revendication 1 ou 2,
    caractérisé en ce que l'
    évaporateur (7) est constitué sous la forme d'un échangeur de chaleur à plaques.
  4. Agencement de conditionnement d'air suivant l'une des revendications 1 à 3,
    caractérisé en ce que
    le dispositif (10) de traitement de l'air a un filtre (12) à air monté entre le ventilateur de transport d'air d'apport conditionné et le refroidisseur (9).
  5. Agencement de conditionnement d'air suivant l'une des revendications 1 à 4,
    caractérisé en ce qu'un
    dispositif (10) de traitement de l'air a un dispositif (13) de chauffage pour le chauffage ultérieur de l'apport d'air passant dans le refroidisseur.
  6. Agencement de conditionnement d'air suivant l'une des revendications 1 à 5,
    caractérisé en ce que
    le circuit (2) intermédiaire a une pompe (8) pour refouler le deuxième fluide frigorigène de l'évaporateur (7) au refroidisseur (9).
  7. Agencement de conditionnement d'air suivant l'une des revendications 1 à 6,
    caractérisé en ce que
    le circuit (2) intermédiaire a un récipient (16) de tranquillisation du deuxième fluide frigorigène.
  8. Véhicule de transport des personnes
    équipé d'un agencement de conditionnement d'air suivant l'une des revendications 1 à 7,
    dans lequel l'agencement de conditionnement d'air est monté entièrement dans une partie de toit du véhicule et de l'air d'apport est conduit du dispositif du traitement de l'air à l'espace intérieur du véhicule, par des conduits de conditionnement d'air.
EP21708122.3A 2020-03-09 2021-02-08 Agencement de climatisation et véhicule de transport de passagers équipé de celui-ci Active EP4117974B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020202956 2020-03-09
PCT/EP2021/052963 WO2021180404A1 (fr) 2020-03-09 2021-02-08 Agencement de climatisation et véhicule de transport de passagers équipé de celui-ci

Publications (3)

Publication Number Publication Date
EP4117974A1 EP4117974A1 (fr) 2023-01-18
EP4117974C0 EP4117974C0 (fr) 2024-03-27
EP4117974B1 true EP4117974B1 (fr) 2024-03-27

Family

ID=74758738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21708122.3A Active EP4117974B1 (fr) 2020-03-09 2021-02-08 Agencement de climatisation et véhicule de transport de passagers équipé de celui-ci

Country Status (2)

Country Link
EP (1) EP4117974B1 (fr)
WO (1) WO2021180404A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP4117974C0 (fr) 2024-03-27
EP4117974A1 (fr) 2023-01-18
WO2021180404A1 (fr) 2021-09-16

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