EP1580500B1 - Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges - Google Patents

Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges Download PDF

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Publication number
EP1580500B1
EP1580500B1 EP04425203A EP04425203A EP1580500B1 EP 1580500 B1 EP1580500 B1 EP 1580500B1 EP 04425203 A EP04425203 A EP 04425203A EP 04425203 A EP04425203 A EP 04425203A EP 1580500 B1 EP1580500 B1 EP 1580500B1
Authority
EP
European Patent Office
Prior art keywords
filter
cap
filter cartridge
coupling
cartridge
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.)
Expired - Lifetime
Application number
EP04425203A
Other languages
English (en)
French (fr)
Other versions
EP1580500A1 (de
Inventor
Davide Perocchio
Giuseppe Tiziano
Giovanni Toscano Rivalta
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.)
Denso Thermal Systems SpA
Original Assignee
Denso Thermal Systems SpA
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
Priority to PT04425203T priority Critical patent/PT1580500E/pt
Priority to AT04425203T priority patent/ATE363634T1/de
Priority to DE602004006710T priority patent/DE602004006710T2/de
Priority to EP04425203A priority patent/EP1580500B1/de
Priority to ES04425203T priority patent/ES2287678T3/es
Application filed by Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Priority to BR0500883-2A priority patent/BRPI0500883A/pt
Priority to ARP050101132A priority patent/AR055811A1/es
Publication of EP1580500A1 publication Critical patent/EP1580500A1/de
Application granted granted Critical
Publication of EP1580500B1 publication Critical patent/EP1580500B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/044—Condensers with an integrated receiver
    • F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • F25B2400/162—Receivers characterised by the plug or stop

Definitions

  • the present invention relates to a filter cartridge for air conditioning systems for vehicles.
  • An air conditioning system of a vehicle is generally provided with a filter assembly positioned between the condenser and the expansion valve.
  • the filter assembly comprises a container with an inlet and an outlet and a particle filter positioned between the inlet and the outlet.
  • the filter assembly comprises a container with tubular shape which extends parallel to one of the distributors of the condenser and is fastened or obtained integrally therewith.
  • the particle filter is generally in the form of an extractable cartridge.
  • dehydrator material usually contained in a permeable bag.
  • the filter assembly is also provided with a removable filter which closes and renders fluid tight an opening through which can be inserted and extracted the cartridge bearing the particle filter and the bag containing the dehydrator material.
  • the document EP-A-669506 describes a condenser for an air conditioning system of a vehicle provided with a filter container incorporated with one of the distributors of the condenser, in which the container of the filter assembly is provided with a cap; as a result of the removal of said cap, a cartridge bearing a particle filter can be extracted from the container.
  • the document FR-2798456 describes a cap for the container of a filter assembly provided with two o-rings which provide a tangential seal between respective annular seats with U-shaped cross section and the inner cylindrical wall of the container.
  • the seat of the o-ring on the cap must have two parallel radial walls and a perfectly smooth bottom wall. This causes some difficulties if the cap is to be obtained by injection moulding.
  • the mould To form an o-ring seat with U-shaped cross section in a monolithic injection moulded piece, the mould must comprise two openable parts to allow the extraction of the finished piece.
  • a two-part mould would inevitably form a small projection in correspondence with the plane of closure of the mould. Consequently, there would be a projection on the bottom wall of the o-ring seat which would form a leaking zone.
  • the object of the present invention is to provide a filter cartridge for air conditioning systems for vehicles which is simpler and more economical than known cartridges and which allows to overcome said drawbacks.
  • said object is achieved by a filter cartridge having the characteristics set out in the main claim.
  • the cartridge 10 designates a first embodiment of a filter cartridge according to the present invention.
  • the cartridge 10 comprises a particle filter 12, a cap 14 and an intermediate section 16 with elongated shape which extends between the cap 14 and the filter 12.
  • the cartridge 10 comprises a support body 18 constituted by an injection moulded monolithic element of plastic material.
  • the support body 18 comprises at an end a support section of the filter 20 whereon is applied a net 24 forming a cylindrical filtering surface.
  • the net 24 is fastened to the support structure of the filter 20, preferably by means of heat sealing.
  • the support structure of the filter 20 comprises an annular sealing element 26 which comes in sealing contact against the inner wall of the container of the filter.
  • the support structure 18 comprises the intermediate section 16 which is preferably formed by a semi-cylindrical wall 28 able to receive a permeable bag 30 containing dehydrator material.
  • the semi-cylindrical wall 28 is preferably provided with two integral clips 32 whose purpose is to hold the bag 30 as shown in Figure 2.
  • the support structure 18 further comprises, at the opposite end relative to the support section of the filter 20, a coupling section 34 whereto is fastened the cap 14 in the manner described below.
  • the cartridge 10 comprises a body of the cap 36 of injection moulded plastic material fastened to the coupling section 34 by means of a bayonet coupling.
  • the body of the cap 36 has two cylindrical surfaces with different diameter. On the cylindrical surface with smaller diameter is inserted an o-ring 38.
  • the surface with greater diameter 40 forms a first radial shoulder for retaining the o-ring 38.
  • a second radial shoulder for retaining the o-ring is formed by a front surface 42 of the coupling section 34.
  • the body of the cap 36 is provided with two axially projecting integral teeth which establish a bayonet coupling with corresponding openings 44 of the coupling section 34. The manner in which the bayonet coupling is obtained between the body of the cap 36 and the coupling section 34 will be described hereafter with reference to a second embodiment of the present invention.
  • FIG. 4 shows a second embodiment of a filter cartridge according to the present invention.
  • the filter cartridge 10 comprises only the filter 12 and the cap 14.
  • the filter 12 comprises a support structure of the filter 20 formed by a monolithic element made of injection moulded plastic material, including an annular sealing element 26 and a coupling section 34.
  • a net of plastic material 24 is fastened on the support structure of the filter 20 which forms a cylindrical filtering surface, coaxial to the axis of the cartridge.
  • the cap 14 of the cartridge 10 comprises two coaxial sealing o-rings, axially distanced from each other.
  • This second variant of the cartridge 10 could be provided with a single o-ring as in the case described above.
  • the cartridge described with reference to Figures 1 through 3 could be provided with one or two sealing o-rings.
  • the body of the cap 36 comprises two cylindrical surfaces 44 with equal diameter separated from each other by a shoulder 46 having two radial walls 48 which delimit the respective cylindrical surfaces 44.
  • the body of the cap 36 is provided with a first pair of coupling teeth 50 which project from a first planar surface 52, and with a second pair of coupling teeth 54 which project from a second planar surface 56.
  • the first pair of teeth 50 establishes a bayonet coupling with the coupling section 34 and the second pair of teeth 54 establishes a bayonet coupling with a shoulder body 58.
  • the coupling section 34 has a front wall 60 facing the radial wall 48 of the shoulder 46.
  • the shoulder body 58 has a front wall 62 facing the other radial wall 48 of the shoulder 46.
  • a first seat with U shaped cross section is defined between the radial walls 48, 60 and the segment of the cylindrical surface 44 included between said radial walls.
  • a second seat for the second o-ring 38 is defined between the radial walls 48 and 62 and the corresponding portion of cylindrical surface 44.
  • the body of the cap 36 is also provided with a projection 64 which extends from the planar surface 56 and is provided with a transverse hole 66 usable to extract the cartridge 10.
  • Figures 6 through 8 show the manner in which the bayonet coupling is achieved between the body of the cap 36 and the shoulder body 58.
  • the bayonet coupling is achieved in similar fashion between the body of the cap 36 and the coupling section 34. In the case of cartridge with a single o-ring, only the bayonet coupling between the body of the cap 36 and the coupling section 34 is provided.
  • the shoulder body 58 has an opening 68 with a radial projection 70 having a first radial wall 72, a second radial wall 74 and a tangential wall 76.
  • Each tooth 54 has a radial surface 78 and a tangential surface 80.
  • the teeth 54 in the position of insertion the teeth 54 have a certain play relative to the projection 70 both in the axial direction (distance between the walls 78 and 72 in Figure 8a) and in the tangential direction (distance between the walls 76 and 80).
  • the teeth 54 pass into the opening through the projection 74 only with a very slight interference which causes no substantial deformation of the teeth.
  • Figures 5c, 6c, 7c and 8c show the position of the components once the mounting operation is complete.
  • the teeth 54 have overtaken the respective check ramps 82 and are locked against the rotation between the arresting surfaces of the ramps 82 and the bottom surfaces of the opening 68.
  • Figure 8c in the completely mounted position the play in the axial direction is completely eliminated. There is a slight interference between the surfaces 78-72 and 56-74, so the shoulder body 58 is fastened in stable fashion and without play to the body of the cap 36.
  • the cartridge according to the invention can be provided with a single o-ring.
  • a single bayonet coupling is provided between the body of the cap 36 and the monolithic body bearing the filter.
  • the cap 14 is provided with two o-rings, two bayonet couplings are provided as shown in Figure 4.
  • the cartridge can be of the type with extension between the filer and the cap ( Figures 1-3) or of the type in which the filter is immediately adjacent to the cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (8)

  1. Filterpatrone für Klimananlagen für Fahrzeuge, die einen Teilchenfilter (12), der von einer Tragestruktur (18, 20) getragen wird, die aus Kunststoffmaterial besteht, und eine Kappe (14) umfasst, die mit wenigstens einem dichtenden O-Ring (38) versehen ist, wobei die Kappe einen Körper (36) umfasst, der aus spritzgegossenem Kunststoffmaterial besteht und an der Tragestruktur (18, 20) des Filters mittels einer Bajonett-Kupplung (50, 60) befestigt ist, der Körper (36) mit der Tragestruktur (18, 20) eine ringförmige Aufnahme mit einem im Wesentlichen U-förmigen Querschnitt bildet, in der der O-Ring (38) aufgenommen ist, die ringförmige Aufnahme aus einer Bodenwand (44), einer ersten radialen Wand (48) und einer zweiten radialen Wand (60) besteht und die Bodenwand (44) sowie die erste radiale Wand (48) an dem Körper (36) ausgebildet sind und die zweite radiale Wand (60) an der Tragestruktur (18, 20) des Filters ausgebildet ist.
  2. Filterpatrone nach Anspruch 1, dadurch gekennzeichnet, dass der Tragekörper des Filters (18, 20) einen Kupplungsabschnitt (34) hat, der mit wenigstens einer Öffnung versehen ist, die ein Paar Zähne (50) des Körpers der Kappe (36) aufnehmen kann.
  3. Filterkartusche nach Anspruch 2, dadurch gekennzeichnet, dass der Kupplungsabschnitt (34) eine vordere Fläche (60) hat, die die Wand der Aufnahme des O-Rings (38) bildet.
  4. Filterpatrone nach Anspruch 2, dadurch gekennzeichnet, dass die Zähne (54) in einen Vorsprung (70) eingreifen, der mit wenigstens einer Sperr-Rampe (82) versehen ist.
  5. Filterpatrone nach Anspruch 4, dadurch gekennzeichnet, dass der Vorsprung (70) eine zunehmende Dicke in der Richtung der Kupplung der Bajonett-Kupplung zum Herstellen eines Zustandes abschließender Kupplung hat, der im Wesentlichen frei von Spiel ist.
  6. Filterpatrone nach Anspruch 1, dadurch gekennzeichnet, dass der Körper der Kappe (36) mit einer zweiten Bajonett-Kupplung zum Befestigen eines Schulterkörpers (58) versehen ist, der eine Fläche hat, die eine radiale Wand für eine zweite O-Ring-Aufnahme (38) bildet.
  7. Filterpatrone nach Anspruch 1, dadurch gekennzeichnet, dass sie einen Zwischenabschnitt (16) zwischen der Kappe (14) und dem Filter (12) umfasst und der Zwischenabschnitt so geformt ist, dass er einen Beutel (30) aufnimmt, der Dehydrationsmittel enthält.
  8. Fifterpatrone nach Anspruch 7, dadurch gekennzeichnet, dass der Zwischenabschnitt (16) mit einem Paar integraler Klemmen (32) versehen ist, die den Beutel (30) halten können.
EP04425203A 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges Expired - Lifetime EP1580500B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT04425203T ATE363634T1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine klimaanlage eines kraftfahrzeuges
DE602004006710T DE602004006710T2 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges
EP04425203A EP1580500B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges
ES04425203T ES2287678T3 (es) 2004-03-24 2004-03-24 Cartucho de filtro para sistemas de aire acondicinado de vehiculos automoviles.
PT04425203T PT1580500E (pt) 2004-03-24 2004-03-24 Cartucho de filtro para sistemas de ar condicionado de veículos
BR0500883-2A BRPI0500883A (pt) 2004-03-24 2005-03-23 Cartucho filtrante para sistemas de ar condicionado para veìculos
ARP050101132A AR055811A1 (es) 2004-03-24 2005-03-23 Cartucho de filtro para instalaciones de aire acondicionado para vehiculos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425203A EP1580500B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges

Publications (2)

Publication Number Publication Date
EP1580500A1 EP1580500A1 (de) 2005-09-28
EP1580500B1 true EP1580500B1 (de) 2007-05-30

Family

ID=34854751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425203A Expired - Lifetime EP1580500B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges

Country Status (7)

Country Link
EP (1) EP1580500B1 (de)
AR (1) AR055811A1 (de)
AT (1) ATE363634T1 (de)
BR (1) BRPI0500883A (de)
DE (1) DE602004006710T2 (de)
ES (1) ES2287678T3 (de)
PT (1) PT1580500E (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005035344A1 (de) * 2005-07-28 2007-02-01 Modine Manufacturing Co., Racine Entnahmevorrichtung für Trocknungsmittel
DE102015212205A1 (de) 2014-07-01 2016-01-07 Denso Thermal Systems S.P.A. Kappe aus Kunststoff für eine in einen Kondensator integrierte Filtergruppe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402927B4 (de) 1994-02-01 2008-02-14 Behr Gmbh & Co. Kg Kondensator für eine Klimaanlage eines Fahrzeuges
JP4075023B2 (ja) * 1998-09-22 2008-04-16 日本軽金属株式会社 受液器
DE10066393B4 (de) 1999-09-10 2018-09-20 Mahle International Gmbh Kondensator
ITMI20022302A1 (it) * 2002-10-29 2004-04-30 Skg Italia S P A Tappo a tenuta migliorata in particolare per un tubo

Also Published As

Publication number Publication date
ES2287678T3 (es) 2007-12-16
DE602004006710D1 (de) 2007-07-12
PT1580500E (pt) 2007-08-24
DE602004006710T2 (de) 2007-10-04
ATE363634T1 (de) 2007-06-15
AR055811A1 (es) 2007-09-12
BRPI0500883A (pt) 2005-11-01
EP1580500A1 (de) 2005-09-28

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