EP3401619A1 - Appareil de service climatique pour un système de climatisation de véhicule - Google Patents

Appareil de service climatique pour un système de climatisation de véhicule Download PDF

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Publication number
EP3401619A1
EP3401619A1 EP18170572.4A EP18170572A EP3401619A1 EP 3401619 A1 EP3401619 A1 EP 3401619A1 EP 18170572 A EP18170572 A EP 18170572A EP 3401619 A1 EP3401619 A1 EP 3401619A1
Authority
EP
European Patent Office
Prior art keywords
unit
air conditioning
coupling
receiving unit
service device
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.)
Withdrawn
Application number
EP18170572.4A
Other languages
German (de)
English (en)
Inventor
Franz-Josef Esch
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.)
Dometic Sweden AB
Original Assignee
Dometic Sweden AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dometic Sweden AB filed Critical Dometic Sweden AB
Publication of EP3401619A1 publication Critical patent/EP3401619A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F25B2345/005—Service stations therefor

Definitions

  • the present invention relates to an air conditioning service unit for vehicle air conditioning systems or to carry out the maintenance of such vehicle air conditioning systems.
  • a conventional air conditioning service device 1 comprises a main body 1 ', in which an emptying and filling device for emptying a refrigerant / compressor oil mixture from the refrigerant circuit of the vehicle air conditioning system to be maintained and for filling the vehicle air conditioner with refrigerant and / or compressor oil is housed. Furthermore, the air conditioning service device 1 comprises a display and operating unit 3, via which operating parameters of the air conditioning service device 1 can be displayed and the air conditioning service device 1 can be operated or controlled. Furthermore, the air conditioning service device 1 comprises at least one pressure hose 5, which at a first end fixed to the main body 1 'of the air conditioning service device 1 and in particular to a terminal 7 of the main body 1' accommodated emptying and filling is coupled. At its second end, the pressure hose 5 has a coupling unit 10, which is designed to couple the pressure hose 5 and thus the air conditioning service unit to the vehicle air conditioning system to be maintained.
  • the coupling unit 10 has a pressure hose connection, via which the pressure hose 5 is connected to the respective coupling unit 10.
  • the coupling unit 10 has at least one sealing element and a coupling element.
  • the respective sealing element is designed to seal the region of the contact between the coupling unit and the vehicle air conditioning system or its receiving unit in the coupled state and thus to prevent leakage.
  • the sealing element is formed for example as a sealing ring.
  • the coupling element is designed to enable a coupling of the coupling unit 10 to the vehicle air conditioning system to be maintained or to fix the coupling unit 10 thereto.
  • the coupling element is formed in the example shown as a group of each guided in a backdrop ball elements, which are supported in the coupling unit. However, the coupling element may also be designed as a spring ring, which is tenhalteert in the coupling unit.
  • the air conditioning service device 1 comprises two pressure hoses 5, which are equipped with corresponding coupling units 10.
  • the air conditioning service unit 1 comprises a receiving unit 20 for each coupling unit 5.
  • the known from the prior art receiving units 20 are conventionally identical to those of the corresponding vehicle air conditioning for Coupling of the coupling unit 10 provided receiving units formed.
  • the air conditioning service unit according to the invention is characterized in that the receiving unit of the air conditioning service unit is configured such that the at least one provided sealing element of the coupling unit is not loaded in the coupled state of the coupling unit to the receiving unit by the receiving unit.
  • the sealing element of the coupling unit is always loaded by sections of the receiving unit in order to obtain the best possible seal in the receiving units of vehicle air conditioning systems and thus even with identical trained recording units from the prior art known air conditioning service equipment. It has been recognized that this loading of the sealing element of the coupling unit by the receiving unit in the coupled state of the coupling unit to the receiving unit of the air conditioning service unit in the idle state of the air conditioning service unit is not necessary. Furthermore, it was recognized that this is accompanied by a considerable load and thus an increased wear of the sealing element.
  • the receiving unit of the air conditioning service device is designed such that in the coupled state of the coupling unit the receiving unit, the sealing element of the coupling unit is no longer loaded by the receiving unit, wear of the sealing element of the coupling unit can be significantly reduced. This in turn leads due to the significant dependence of the life of the coupling unit of the life of its sealing element to a significant extension of the life of the coupling unit. This makes it possible to solve the task set above in an advantageous manner on the inventive adaptation of the air conditioning service unit and in particular its receiving unit.
  • the air conditioning service device has a second pressure hose with a corresponding coupling unit and a second receiving unit.
  • the functionality of the air conditioning service unit and the speed of maintenance of vehicle air conditioners with the corresponding air conditioning service unit can be significantly increased, for example emptying the vehicle air conditioning system can be done in parallel through the two provided pressure hoses.
  • the advantages obtained according to the invention are also achieved for the second coupling unit.
  • the receiving unit comprises a fixing portion and a coupling portion.
  • the receiving unit is attached via the attachment portion to the main body of the air conditioning service unit.
  • the coupling portion is formed such that the coupling unit can be coupled via this to the receiving unit.
  • the receiving unit may in particular be fastened fixedly or detachably to the main body of the air conditioning service device.
  • coupling can be understood, for example, a preferably positive connection, for example, a locking of a coupling element, in particular a group of guided in scenes ball elements, the coupling unit in a region of the receiving unit.
  • Coupling is only intended here to mean that the coupling unit is at least temporarily fastened to the receiving unit such that a certain amount of force is required to release the coupling unit from the receiving unit.
  • a secure attachment of the receiving unit to the main body of the air conditioning service device and a secure coupling of the coupling unit can be achieved at the receiving unit. Due to the diversity of conceivable embodiments of the attachment portion and the coupling portion of the receiving unit, this can be adapted to a wide variety Ankoppelismeen or other requirements.
  • an exchange of the receiving units can be facilitated. Among other things, this allows a reduction in maintenance costs for the air conditioning service unit.
  • the coupling portion of the receiving unit has a recess which is adapted to at least partially receive and in particular to hold a coupling element of the coupling unit.
  • the coupling element of the coupling unit may be formed as a group of ball elements, which engages in a circumferential recess in the coupling portion of the receiving unit as soon as the coupling unit is coupled to the receiving unit.
  • the receiving unit and / or the coupling unit of the air conditioning service unit may be designed such that the coupling unit is mechanically, magnetically and / or electromagnetically coupled to the receiving unit. This can be achieved, for example, particularly easily, by either the receiving unit or the coupling unit has a magnet correspondingly positioned, while the coupling unit or the receiving unit at a corresponding point a metal element and / or also has a magnet oppositely oriented.
  • the proposed coupling options it is particularly easy to obtain a coupling of the coupling unit to the receiving unit and secure.
  • the receiving unit of the air conditioning service device may further comprise an extension extending along a coupling direction between the coupling unit and the receiving unit.
  • Such an extension can fulfill many functions, which allows a variety of other customization options and optimization options for the recording unit and thus the entire air conditioning service device. For example, as explained below, this can be designed such that it supports a coupling of the coupling unit to the receiving unit by acting as a guide element.
  • the extension is formed such that advantageously in the coupled state of the coupling unit to the receiving unit, the at least one sealing element of the coupling unit is not loaded by the extension of the receiving unit. This ensures that there is no wear of the sealing element of the coupling unit by the receiving unit in the coupled state of the coupling unit to the receiving unit and thus the desired extension of the life of the coupling unit of the air conditioning service unit is also achieved safely.
  • the extension of the Receiving unit may be dimensioned such that it reaches in the coupled state of the coupling unit to the receiving unit of the air conditioning service unit at most up to the extension of the closest sealing element of the receiving unit.
  • the extension is dimensioned such that it is in the coupled state at most in contact with the corresponding sealing element of the coupling unit. Accordingly, this advantageously does not cause any stress or wear of the sealing element.
  • the length of the extension is smaller than the corresponding relevant distance and in particular less than 90%, preferably less than 70% and more preferably less than 50% of this distance. This can ensure that the extension can not come into contact with the corresponding sealing element of the coupling unit. A load on the sealing element of the coupling unit by the receiving unit and in particular its extension is thus effectively prevented.
  • the length of the extension just corresponds to the corresponding distance. This can be achieved that the extension and the corresponding sealing element in the coupled state of the coupling unit to the receiving unit of the air conditioning service device are just in contact with each other and thus at least a residual sealing effect in the contact area between the coupling unit and the receiving unit is achieved. This makes it even easier to prevent contamination of the coupling unit with dust, without having to fear wear of the sealing element of the coupling unit and thus a reduction in the service life of the coupling unit.
  • the extension preferably has a substantially conical shape.
  • the extension can in particular be designed such that it protrudes into the coupling unit tapering in the coupled state of the coupling unit to the receiving unit of the air conditioning service unit. As a result, the extension can lead to a coupling movement of the coupling unit to the receiving unit and consequently significantly easier.
  • the coupling portion of the receiving unit can connect directly to the mounting portion of the receiving unit, while a possibly existing extension of the receiving unit can connect directly to the coupling portion of the receiving unit.
  • This structure of the receiving unit is particularly useful because the mounting portion, the coupling portion and, if present, the extension are arranged in series and thus the corresponding functions are spatially clearly separated. This leads to a particularly simple yet functional structure of the recording unit.
  • the receiving unit of the air conditioning service device may preferably have at least one auxiliary section, on which at least part of the coupling unit comes into contact with the receiving unit in the coupled state of the coupling unit.
  • This auxiliary section makes it possible to further stabilize the coupled state of the coupling unit to the receiving unit without losing sight of the inventive concept.
  • the receiving unit of the air conditioning service unit can be formed in one piece or in several parts. Furthermore, different sections of the receiving unit can be formed individually and / or as a unit.
  • the one-piece design of the receiving unit or corresponding sections of the receiving unit is generally particularly robust, while their production is simple and inexpensive.
  • the multi-part design of the receiving unit or different sections of the receiving unit allows greater flexibility in the adaptation of the receiving unit to prevailing conditions and the interchangeability of individual sections of the receiving unit, if only should occur on these damages.
  • the air conditioning service device according to the invention according to the first embodiment according to Fig. 2 a coupling unit 10a with a pressure hose connection 12a, a sealing element 14a and a coupling element 16a.
  • the sealing element 14a is also formed as a circumferential sealing ring, which is fixed in the coupling unit 10a.
  • the coupling element 16a is designed as a circumferentially arranged group of ball elements provided in the coupling unit 10a.
  • the single ball element is in each case in a radially aligned recess in the manner of a backdrop movably guided.
  • the ball elements cause in their entirety a mounting of the coupling unit 10a.
  • the air conditioning service device comprises a receiving unit 120, which is attached to the main body 1 'of the air conditioning service unit and to which the coupling unit 10a can be coupled.
  • the receiving unit 120 includes a mounting portion 122, a coupling portion 124, a projection 126, and an auxiliary portion 128 and an additional portion 129.
  • the mounting portion 122 is detachably attached via a screw mechanism to the main body 1 'of the air conditioning service unit. Adjoining the fastening section 122 is the auxiliary section 128 which, in the coupled state of the coupling unit 10a 'shown here, is in contact with the receiving unit 120 with at least part of the coupling unit 10a.
  • the auxiliary section 128 in turn is connected to the coupling section 124 via the additional section 129.
  • the extension 126 connects to the coupling section 124.
  • the additional portion 129 serves here essentially for the connection between the auxiliary portion 128 and the coupling portion 124 and merely provides for an extension of the receiving unit 120.
  • the coupling portion 124 has a transversely to the coupling direction of the coupling unit 10a to the receiving unit 120 extending annular recess into which the Coupling element 16a is engaged in the shown coupled state. As a result, the coupling portion 124, together with the coupling element 16a, ensures a stable coupling between the coupling unit 10a and the receiving unit 120.
  • the coupling unit 10a can be released from the receiving unit 120 only with a corresponding effort of the operator. An independent release of the coupling unit 10a of the receiving unit 120 is thus reliably prevented.
  • the coupling between the coupling unit 10a and the receiving unit 120 is further stabilized by the resting of the coupling unit 10a on the auxiliary portion 128.
  • the extension 126 is tapered in the example shown in the direction of the coupling unit 10a, which supports a coupling process of the coupling unit 10a to the receiving unit 120 by the guidance of the coupling element 16a towards the coupling portion 124 and thus considerably easier.
  • the length l F of the extension 126 corresponds in the embodiment shown here just the distance d FD of a connection between the coupling portion 124 and the extension 126 and the interface between these two sections of the receiving unit 120 to the next sealing element 14a of the coupling unit 10a.
  • the extension 126 at most touches the corresponding sealing element 14a of the coupling unit 10a, but does not load it or does not extend transversely to the coupling direction of the coupling unit 10a to the receiving unit 120. Due to the minimum distance between the extension 126 and the sealing element 14a thus obtained, the best possible sealing, for example against dust, between the coupling unit 10a and the receiving unit 120 can still be achieved. There If the sealing element 14a is not loaded or worn, and consequently the service life of the sealing element 14a and thus of the coupling unit 10a is considerably extended. The sealing effect is further supported by the resting of the coupling unit 10a on the auxiliary portion 128 of the receiving unit 120.
  • the coupling unit 10a When coupling the coupling unit 10a to the receiving unit 120, the coupling unit 10a is pushed onto the coupling unit 120. As soon as the coupling element 16a of the coupling unit 10a touches the extension 126 of the receiving unit 120 and the coupling unit 10a is pushed further onto the receiving unit 120, the coupling element 16a formed here as an encircling group of ball elements is extended by the extension 126 essentially transversely to the coupling movement. As soon as the coupling element 16a has passed the extension 126 and reaches the region of the coupling section 124, it contracts in the annular recess of the coupling section 124.
  • the coupling unit 10a comes to the receiving unit 120 at the auxiliary portion 128 to lie, while the extension 126 just or just barely touched, the sealing element 14a.
  • the coupling unit 10a is securely mounted on the receiving unit 120 of the air conditioning service unit and protected by the receiving unit by harmful environmental influences such as pollution, sunlight, and the like, without the receiving unit 120 wears the coupling unit 10a and in particular their sealing element 14a. This achieves a considerable extension of the service life of the coupling unit 10a.
  • an air conditioning service device 1 while maintaining its main body with replacement of the coupling unit 10a and the receiving unit 120 can be converted to other vehicle air conditioning systems or their Ankoppelmos.
  • Such a configuration is for example in Fig. 3 shown.
  • this includes a corresponding coupling unit 10b with a pressure hose connection 12b for connecting the coupling unit 10b to the pressure hose 5, a sealing element 14b and a coupling element 16b.
  • the sealing element 14b as Sealing ring and the coupling element 16b formed as a circumferentially provided group of ball elements.
  • the air conditioning service device 1 shown here also comprises a receiving unit 220 fastened to the main body 1 'of the air conditioning service device 1, which itself consists of a fastening section 222, a coupling section 224 and an extension 226.
  • a separately provided auxiliary section as well as a separately provided additional section has been dispensed with here, or they are formed integrally with the fastening section 222.
  • a corresponding additional section and a corresponding auxiliary section are not necessarily provided.
  • the entire receiving unit could be formed integrally.
  • the length l F of the extension 226 is formed here considerably shorter than the distance d DF of the connection between the extension 226 and the coupling portion 224 to the sealing element 14b of the coupling unit 10b.
  • This significantly shortened design of the extension 226 ensures that, even if the coupling unit 10b is pushed further beyond the coupling state between the coupling unit 10b and the receiving unit 220 on the receiving unit 220, no contact between the receiving unit 222 and the extension 226 of the receiving unit 220 and the sealing member 14b of the coupling unit 10b can take place.
  • a load and thus wear of the sealing element 14b safely avoided and thus the life of the coupling unit 10b can be significantly increased.
EP18170572.4A 2017-05-09 2018-05-03 Appareil de service climatique pour un système de climatisation de véhicule Withdrawn EP3401619A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017207797.2A DE102017207797B4 (de) 2017-05-09 2017-05-09 Klima-service-gerät für eine fahrzeugklimaanlage

Publications (1)

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EP3401619A1 true EP3401619A1 (fr) 2018-11-14

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EP18170572.4A Withdrawn EP3401619A1 (fr) 2017-05-09 2018-05-03 Appareil de service climatique pour un système de climatisation de véhicule

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EP (1) EP3401619A1 (fr)
DE (1) DE102017207797B4 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11571945B2 (en) 2018-12-21 2023-02-07 Dometic Sweden Ab Roof top air conditioner unit, methods for producing, assembling and installing the roof top air conditioner unit and vehicle with the roof top air conditioner unit
US11752827B2 (en) 2019-08-28 2023-09-12 Dometic Sweden Ab Air conditioner
USD1010080S1 (en) 2020-05-15 2024-01-02 Dometic Sweden Ab Housing for air conditioning apparatus
US11933285B2 (en) 2018-04-23 2024-03-19 Dometic Sweden Ab Damped mobile compressor
US11951798B2 (en) 2019-03-18 2024-04-09 Dometic Sweden Ab Mobile air conditioner
USD1027143S1 (en) 2021-07-12 2024-05-14 Dometic Sweden Ab Housing shroud for an air conditioner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168720A (en) * 1990-09-26 1992-12-08 Technical Chemical Company Refrigerant recovery system with flush mode and associated flushing adapter apparatus
US20090188263A1 (en) * 2008-01-29 2009-07-30 Murray Gary P Apparatus to Clear Oil from the Hoses and Front End of a Recovery Recharge Machine
US20140260354A1 (en) * 2013-03-14 2014-09-18 Service Solutions U.S. Llc Refrigerant Service Hose Check Valve Device and Method
US20140260353A1 (en) * 2013-03-14 2014-09-18 Service Solutions U.S. Llc Modified Hose Flush Device and Method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7124598B2 (en) * 2004-10-26 2006-10-24 E.F. Products, Inc. Pressure testing and refrigerant recharging conduit assembly for automobiles
EP2972017B1 (fr) * 2013-03-12 2020-09-23 Bosch Automotive Service Solutions Inc. Procédé et appareil d'amélioration de la précision de charge d'une unité de récupération de fluide frigorigène comprenant un dispositif de clapet de non retour et des tuyaux flexibles de service à température contrôlée

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168720A (en) * 1990-09-26 1992-12-08 Technical Chemical Company Refrigerant recovery system with flush mode and associated flushing adapter apparatus
US20090188263A1 (en) * 2008-01-29 2009-07-30 Murray Gary P Apparatus to Clear Oil from the Hoses and Front End of a Recovery Recharge Machine
US20140260354A1 (en) * 2013-03-14 2014-09-18 Service Solutions U.S. Llc Refrigerant Service Hose Check Valve Device and Method
US20140260353A1 (en) * 2013-03-14 2014-09-18 Service Solutions U.S. Llc Modified Hose Flush Device and Method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11933285B2 (en) 2018-04-23 2024-03-19 Dometic Sweden Ab Damped mobile compressor
US11571945B2 (en) 2018-12-21 2023-02-07 Dometic Sweden Ab Roof top air conditioner unit, methods for producing, assembling and installing the roof top air conditioner unit and vehicle with the roof top air conditioner unit
US11951798B2 (en) 2019-03-18 2024-04-09 Dometic Sweden Ab Mobile air conditioner
US11752827B2 (en) 2019-08-28 2023-09-12 Dometic Sweden Ab Air conditioner
USD1010080S1 (en) 2020-05-15 2024-01-02 Dometic Sweden Ab Housing for air conditioning apparatus
USD1027143S1 (en) 2021-07-12 2024-05-14 Dometic Sweden Ab Housing shroud for an air conditioner

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Publication number Publication date
DE102017207797A1 (de) 2018-11-15
DE102017207797B4 (de) 2019-08-14

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