EP3172505B1 - Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant r744 - Google Patents

Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant r744 Download PDF

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Publication number
EP3172505B1
EP3172505B1 EP15766734.6A EP15766734A EP3172505B1 EP 3172505 B1 EP3172505 B1 EP 3172505B1 EP 15766734 A EP15766734 A EP 15766734A EP 3172505 B1 EP3172505 B1 EP 3172505B1
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EP
European Patent Office
Prior art keywords
refrigerant
filling station
filling
adapter
cooling
Prior art date
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Active
Application number
EP15766734.6A
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German (de)
English (en)
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EP3172505A1 (fr
Inventor
Thomas Achatz
Jörg Ritter
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.)
Duerr Somac GmbH
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Duerr Somac GmbH
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Publication date
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Publication of EP3172505A1 publication Critical patent/EP3172505A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/003—Control issues for charging or collecting refrigerant to or from a cycle

Definitions

  • the invention relates to a device for filling vehicle air conditioning systems with refrigerant R744, the device having at least one storage tank for liquid refrigerant, which is operatively connected to a filling system via at least one pump station as well as a supply route and a return line, from which the refrigerant is fed in via an adapter is fed into the vehicle air conditioning system.
  • refrigerants that meet environmentally friendly aspects are increasingly being used for vehicle air conditioning systems. This also includes CO 2 , which has the designation R744 as a refrigerant.
  • the vehicle air conditioning systems are initially filled by the manufacturer during final vehicle assembly using filling systems.
  • the accuracy requirements with regard to the masses to be filled must therefore be placed on the filling system.
  • the manufacturers of filling systems have the task of controlling the phase states that change due to temperature and pressure and thus also the density of the refrigerant in order to be able to carry out filling within the required tolerance limits.
  • this is particularly difficult with the refrigerant R744 because significant changes occur in the assembly hall temperature range and during compression by the required pumps.
  • the refrigerant R744 could always be kept in the liquid phase.
  • mass flow measuring devices are able to carry out correct measurements of the mass flow.
  • the filling distance after the mass flow measuring device to the vehicle air conditioning system can also be viewed as a constant volume and therefore a constant mass because, according to the enthalpy diagram, the refrigerant in the liquid phase is not subject to a significant change in density with small temperature changes.
  • the object of the invention is to create a technical solution with which refrigerant R744 can be constantly kept in the liquid phase within a supply concept with a filling system.
  • a device in that a temperature sensor and a valve circuit are arranged at the transition area between the supply route and the filling system, which regulate the refrigerant flow depending on the specific operating situation in such a way that if the removal of refrigerant is interrupted During the acceptance break, warming refrigerant is inevitably returned to the storage tank and cold refrigerant is conveyed from the storage tank to the filling system.
  • the control of the valve circuit and consequently the return and cooling of the refrigerant is initiated by the filling system.
  • the device only triggers the recirculation and cooling of the refrigerant at times when the application-specific operating behavior of the filling system is not affected.
  • an adapter tray is designed in such a way that the adapter in its storage position can be clamped onto a special connection (service port) via a sealing form fit in such a way that the refrigerant is returned and cooled via a return line assigned to the adapter tray.
  • the refrigerant R744 With a valve circuit and temperature monitoring assigned to the filling system, the refrigerant R744 is kept in its liquid phase. This makes it possible to fill the vehicle air conditioning system within narrow tolerance limits, which requires mass flow measuring devices without additional real-time correction of pipe sections up to the entry into the air conditioning system.
  • an automatic process is implemented that takes into account the removal profile by the filling system on the assembly line and, for example, automatically ensures that the system is ready for operation in the supply concept at the start of the shift.
  • the filling distance to the adapter is also taken into account.
  • the adapter can advantageously be brought into operative connection with a service port that is similar to the vehicle valve by means of a sealing form fit within the adapter tray. If the adapter is tensioned accordingly in its holder, the delivery of heated refrigerant and the subsequent supply of cold refrigerant are automatically possible. As a result, a return line in the adapter and in the hose package can advantageously be dispensed with.
  • the device shown in the drawing is designed for the initial filling of vehicle air conditioning systems with the refrigerant R744.
  • the device has a storage tank 1 for liquid refrigerant R744, which is in operative connection with a filling system 3 via a line 5 and a pump station 2 as well as via a supply line 6 and a return line 7.
  • the refrigerant R744 is fed into an assembly of the vehicle air conditioning system via an adapter 4.
  • Tanks 1 for liquid refrigerant R744 with a connected pump station 2 as well as the ring lines and return lines required for this are known as state of the art, so these assemblies do not need to be explained in more detail at this point.
  • the supply system for the refrigerant R744 also includes a return line 7 in addition to the supply route 6.
  • a temperature sensor T and a valve circuit 10 are arranged at the transfer of the supply route 6 to the filling system 3. If, for example, the temperature rises during a break in media removal, the heated medium can flow back with the help of the valve circuit 10 and cold medium is conveyed to the filling system 3. This is the assignment of the valve circuit 10 to the filling system 3 is advantageous because the removal regime is known to it or is controlled by it itself. In principle, this means that medium can be returned or cooled down at times in which the required operating behavior is not impaired.
  • the filling section within the filling system 3 up to the adapter outlet must also be monitored with regard to the media temperature and pressure level.
  • the adapter storage can advantageously be designed such that the adapter 4 is clamped in the storage position onto a special connection similar to that of the vehicle system.
  • the control is advantageously left to the filling system 3, since the removal regime is known to it or is controlled by it itself.
  • media return or cooling can also be carried out at times in which the required operating behavior is not impaired.
  • the medium can be transported away or returned, for example via a line 8 over the roof of the building or a return line 9 to the supply tank 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (2)

  1. Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant R744, le dispositif présentant au moins un réservoir de stockage (1) pour réfrigérant liquide R744, un poste de pompage (2), une installation de remplissage (3), un adaptateur (4), un support d'adaptateur, une zone d'alimentation (6), une conduite (5), une première conduite et une conduite de retour (7), le réservoir de stockage (1) étant relié via la conduite (5) au poste de pompage (2), le poste de pompage (2) étant reliée via la zone d'alimentation (6) à l'installation de remplissage (3) et l'installation de remplissage (3) étant reliée via la première conduite à l'adaptateur (4) et via la conduite de retour (7) au réservoir de stockage (1), et le réfrigérant R744 pouvant être injecté dans le système de climatisation du véhicule via l'adaptateur (4), caractérisé en ce,
    qu'un capteur de température (T) et un dispositif de commutation à soupape (10) sont disposés dans la section de transition entre la zone d'alimentation (6) et l'installation de remplissage (3) et que l'installation de remplissage (3) comprend un régulateur,
    le régulateur réglant le dispositif de commutation à soupape (10) de telle sorte qu'en fonction de la situation de fonctionnement concrète respective, le flux de réfrigérant est réglé de telle manière que, lors d'une interruption du prélèvement de réfrigérant, le réfrigérant qui s'échauffe inévitablement en raison de la pause de prélèvement soit ramené au réservoir de stockage (1) via la conduite de retour (7) et que du réfrigérant froid soit transporté du réservoir de stockage (1) vers l'installation de remplissage (3),
    la commande de la commutation à soupape (10) et par conséquent un retour et un refroidissement du réfrigérant étant initiés par l'installation de remplissage (3) et le support d'adaptateur étant équipé de manière telle que l'adaptateur (4) dans sa position sur le support peut être serré via un accouplement mécanique étanche sur un raccord particulier (de préférence un port de service) de telle manière qu'un retour et un refroidissement du réfrigérant ait lieu via une conduite de retour (8; 9), le régulateur de l'installation de remplissage initiant la commande du support d'adaptateur et par conséquent un retour et un refroidissement du réfrigérant de l'installation de remplissage (3) et le régulateur ne déclenchant un retour et un refroidissement du réfrigérant au moyen du commutateur à soupape (10) et du support d'adaptateur qu'à des moments où le comportement de fonctionnement spécifique à l'utilisation de l'installation de remplissage n'est pas affecté.
  2. Procédé d'exploitation d'un dispositif de remplissage de systèmes de climatisation de véhicules en réfrigérant R744 selon la revendication 1, caractérisé en ce que,
    en utilisant le capteur de température (T) et le dispositif de commutation à soupape (10), le flux de réfrigérant soit régulé en fonction de la situation de fonctionnement concrète respective de telle manière que, lors d'une interruption du prélèvement de réfrigérant, le réfrigérant qui s'échauffe inévitablement en raison de la pause de prélèvement soit ramené au réservoir de stockage (1) et que du réfrigérant froid soit transporté du réservoir de stockage (1) vers l'installation de remplissage (3),
    la commande de la commutation à soupape (10) et par conséquent un retour et un refroidissement du fluide frigorigène étant initiés par l'installation de remplissage (3),
    un retour et un refroidissement du réfrigérant étant effectués par l'intermédiaire de la conduite de retour (8; 9) associée au support d'adaptateur,
    la commande du support d'adaptateur et par conséquent un retour et un refroidissement du fluide frigorigène étant initiés par l'installation de remplissage (3) et
    le dispositif ne déclenchant un retour et un refroidissement du réfrigérant au moyen du dispositif de commutation à soupape (10) et/ou du support d'adaptateur qu'à des moments où le comportement de fonctionnement spécifique à l'utilisation de l'installation de remplissage n'est pas affecté.
EP15766734.6A 2014-07-22 2015-07-01 Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant r744 Active EP3172505B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014011051.6A DE102014011051A1 (de) 2014-07-22 2014-07-22 Vorrichtung zur Befüllung von Fahrzeugklimasystemen mit Kältemittel R744
PCT/DE2015/000338 WO2016011990A1 (fr) 2014-07-22 2015-07-01 Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant r744

Publications (2)

Publication Number Publication Date
EP3172505A1 EP3172505A1 (fr) 2017-05-31
EP3172505B1 true EP3172505B1 (fr) 2023-10-18

Family

ID=54150195

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15766734.6A Active EP3172505B1 (fr) 2014-07-22 2015-07-01 Dispositif pour remplir des systèmes de climatisation de véhicule par le réfrigérant r744

Country Status (11)

Country Link
US (1) US10480836B2 (fr)
EP (1) EP3172505B1 (fr)
CN (1) CN106574815B (fr)
BR (1) BR112017000588B1 (fr)
DE (1) DE102014011051A1 (fr)
ES (1) ES2968100T3 (fr)
HU (1) HUE065037T2 (fr)
MX (1) MX2017000477A (fr)
PL (1) PL3172505T3 (fr)
PT (1) PT3172505T (fr)
WO (1) WO2016011990A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016005319A1 (de) 2016-05-02 2017-11-02 Inka-Systems Gmbh & Co. Kg Vorrichtung zum Befüllen eines Tanks eines Kraftfahrzeuges mit einem flüssigen oder gasförmigen Betriebsmittel, insbesondere zur industriellen Erstbefüllung am Montageband des Herstellers
DE102017120384B4 (de) 2017-09-05 2023-03-16 Fft Produktionssysteme Gmbh & Co. Kg Befüllvorrichtung zum Befüllen von Klimaanlagen mit CO2

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285206A (en) 1979-02-05 1981-08-25 Draf Tool Co., Inc. Automatic refrigerant recovery, purification and recharge apparatus
US5024061A (en) * 1989-12-12 1991-06-18 Terrestrial Engineering Corporation Recovery processing and storage unit
US6442963B1 (en) * 2000-06-23 2002-09-03 Snap-On Technologies, Inc. Non-condensable purge technique using refrigerant temperature offset
EP2051030B1 (fr) * 2007-10-15 2013-01-23 Agramkow Fluid Systems A/S Procédé pour le contrôle de la température du CO2 ainsi que pour la mesure et le remplissage de systèmes de CO2
DK178047B1 (da) 2013-02-04 2015-04-13 Agramkow Fluid Systems As Fremgangsmåde til påfyldning af kølemiddel

Also Published As

Publication number Publication date
PT3172505T (pt) 2024-01-22
EP3172505A1 (fr) 2017-05-31
BR112017000588B1 (pt) 2022-08-09
US10480836B2 (en) 2019-11-19
WO2016011990A1 (fr) 2016-01-28
MX2017000477A (es) 2017-04-27
PL3172505T3 (pl) 2024-03-18
BR112017000588A2 (pt) 2017-11-07
ES2968100T3 (es) 2024-05-07
DE102014011051A1 (de) 2016-01-28
HUE065037T2 (hu) 2024-04-28
CN106574815B (zh) 2020-02-14
CN106574815A (zh) 2017-04-19
US20170227270A1 (en) 2017-08-10

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