EP1580501A1 - Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges - Google Patents

Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges Download PDF

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Publication number
EP1580501A1
EP1580501A1 EP04425204A EP04425204A EP1580501A1 EP 1580501 A1 EP1580501 A1 EP 1580501A1 EP 04425204 A EP04425204 A EP 04425204A EP 04425204 A EP04425204 A EP 04425204A EP 1580501 A1 EP1580501 A1 EP 1580501A1
Authority
EP
European Patent Office
Prior art keywords
container
cap
filter assembly
cylindrical wall
ring
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
Application number
EP04425204A
Other languages
English (en)
French (fr)
Other versions
EP1580501B1 (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 EP04425204A priority Critical patent/EP1580501B1/de
Priority to DE602004006711T priority patent/DE602004006711T2/de
Priority to ES04425204T priority patent/ES2287679T3/es
Priority to AT04425204T priority patent/ATE363635T1/de
Priority to PT04425204T priority patent/PT1580501E/pt
Application filed by Denso Thermal Systems SpA filed Critical Denso Thermal Systems SpA
Priority to BR0500887-5A priority patent/BRPI0500887A/pt
Priority to ARP050101133A priority patent/AR048325A1/es
Publication of EP1580501A1 publication Critical patent/EP1580501A1/de
Application granted granted Critical
Publication of EP1580501B1 publication Critical patent/EP1580501B1/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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size

Definitions

  • the present invention relates to a filter assembly 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 is obtained in integral form with one of the distributors of the condensers.
  • the container of the filter body is provided with a removable cap which closes in sealed fashion an opening of the container through which can be inserted and extracted a cartridge including the particle filter.
  • the extractable cartridge can be provided with an extension bearing a permeable bag containing dehydrator material.
  • the document FR-A-2 798 456 describes a closure cap for a tubular container containing a dehydrator element.
  • the cap is obtained in the form of a cylindrical element which is guided with freedom of axial displacement in a corresponding hole of the container.
  • the cap is provided with two sealing o-rings which are inserted into corresponding annular seats of the cap and which act in sealing contact against an inner cylindrical wall of the container.
  • An elastic retaining ring engages a circumferential seat formed on the inner cylindrical wall of the container and prevents the extraction of the cap from the container.
  • the object of the present invention is to provide an enhanced filter assembly which allows to improve the seal guarantees provided by the cap over time.
  • said object is achieved by a filter assembly having the characteristics set out in the main claim.
  • the reference 10 designates a filter assembly for an air conditioning system for vehicles.
  • the filter assembly 10 illustrated only partially in Figures 1 through 3, comprises a tubular container 12 with the shape of a cylinder with circular section elongated in the direction of its own axis, preferably made of aluminium or alloys thereof.
  • the container 12 can be obtained by extrusion and it is preferably destined to be permanently fastened to a distributor of a condenser.
  • the container 12 is preferably provided with an integral flange 14 (shown only partially in Figures 1 through 3) with a bearing surface having semi-circular shape which is destined to be fastened by furnace brazing on the external surface of the distributor.
  • the container 12 has an end (not shown in the drawings) closed in permanent fashion, and an opposite end 16 closed in sealed fashion by a removable cap 18.
  • the container 12 of the filter assembly 10 has an internal cylindrical wall 20 with circular section.
  • the cylindrical wall 20 has a portion 22 with greater diameter near the end 16.
  • the portion with greater diameter 22 is joined to the cylindrical wall 20 by means of a conical chamfer 24.
  • the portion with greater diameter 22 is provided with an annular groove 26 for an elastic retaining ring 28 made of metallic material of the kind commercially known as "Seeger ring".
  • the container 12 of the filter assembly 10 in use is inserted between the condenser and the expansion valve of the air conditioning system of the vehicle.
  • the filter assembly 10 is inserted in series between the condensing section and the sub-cooling section of the condenser.
  • the filter assembly 10 performs the function of expansion tank of the air conditioning system of the vehicle. It is also provided with a particle filter and with a dehydrator element.
  • a cartridge provided with a mesh filter positioned between an inlet and an outlet of the container 12.
  • the cartridge bearing the particle filter is preferably fastened in permanent fashion to the cap 18 as described in detail in a contemporary patent application by the same Applicant.
  • a bag 30 made of permeable material containing a dehydrator material.
  • the cap 18 comprises a body 32 made of injection moulded plastic material provided with integral teeth 34 (only one of which is shown in Figures 3 and 4) which are used for the permanent fastening of the body of the cap 32 to the body of the filter cartridge, as described in detail in a contemporary patent application by the same Applicant.
  • the body of the cap 32 is constituted by a monolithic element made of injection moulded plastic material and comprises a cylindrical guiding surface 36 which in use is guided in the internal cylindrical surface 20 of the container 12.
  • the body of the cap 32 has a cylindrical surface 38 with smaller diameter than the guiding surface 36. Between the guiding surface 36 and the portion with smaller diameter 38 is formed a step with a radial surface 40. In the surface 38 is inserted an o-ring 42 which establishes a sealing contact with the internal cylindrical surface 20 of the container.
  • the body of the filter cartridge fastened to the body of the cap 32 has a portion 44 ( Figures 1-3) which forms a second radial surface 48 parallel to and facing the first radial surface 40.
  • the radial surfaces 40, 48 and the portion of cylindrical surface 38 included between said radial surfaces form an annular seat with U-shaped cross section in which the o-ring 42 is housed.
  • the o-ring 42 can be obtained as shown in Figure 6, with a lobed cross section having on the outer surface two seal areas 50 separated from each other by a depression 52. Similarly, the inner sealing surface of the o-ring 42 has two seal areas 54 mutually separated by a depression 56.
  • the cap 18 can also be provided with two o-rings 42 as described in the contemporary patent application by the same Applicant, mentioned previously.
  • each of the two o-rings can have circular cross section or with lobed section as shown in Figure 6.
  • the guiding surface 36 of the body of the cap 32 terminates, at the opposite side with respect to the radial surface 40, with a conical chamfer 58 which is destined to engage the conical chamfer 24 formed on the internal surface 20 of the container 12 to form a stop that prevents the cap 18 to be sucked back into the container 12 when a vacuum is produced inside the air conditioning system.
  • the body of the cap 32 is provided with a continuous annular lip 60 integral with the body of the cap, which forms a protection element able to engage with slight interference the surface 22 of the container 12.
  • the protection lip 60 forms a closure which prevents the entry of contaminants of various kinds in the seal area between the o-ring 42 and the inner cylindrical wall 20 of the container 12.
  • the protection lip 60 prevents dust, dirt or potentially corrosive liquid substances from coming in contact with the o-ring.
  • the lip 60 also performs a scraping action against the cylindrical surface 22 which removes any dirt which may have accumulated on the part of surface 22 external to the cap during the extraction of the cap. Therefore, there is a reduction in the risk that, during the reinsertion of the cap, traces of dust or dirt may collect on the external surface of the o-ring 42 which could compromise the sealing contact between the o-ring 42 and the surface 20.
  • the body of the cap 32 is also provided with a threaded hole 62 with an axis coinciding with the axis of the body of the cap 32 and formed in an integral central part 64 of the body of the cap 32.
  • the threaded hole 62 can be engaged by a threaded tool for extracting the cap 18 from the container 12. The extraction of the cap is naturally possible only after removing the elastic retaining ring 28.
  • the threaded hole 62 can also be used to fasten a disk-shaped protecting element 66 ( Figures 1-3).
  • the disk-shaped protecting element 66 is provided with a threaded axial appendage 68 which engages the threaded hole 62 of the body of the cap 32.
  • the disk-shaped protecting element 66 is preferably provided on its external part with a hexagonal hole 70 able to be engaged by an Allen wrench to screw and unscrew the protecting element 66 relative to the body of the cap 32.
  • the protecting element 66 has a slightly larger diameter than the diameter of the internal cylindrical surface 22 of the container 12. Therefore, when the disk-shaped protecting element 66 is screwed onto the cap 18, a surface 72 of the protecting element 66 comes in contact against a front surface 74 of the container 12 forming a closure which prevents the entry of dust or contaminants into the seal area of the cap 18.
  • the disk-shaped protecting element 66 can be used together with or instead of the protecting lip 60 formed on the body of the cap 32.
  • the presence of one or both the protecting elements 60, 66 allows to prevent the entry and the accumulation of contaminants on the internal wall of the container 12 outside the seal area. Therefore, these contaminants are prevented from coming in direct contact with the o-ring even during the extraction and reinsertion of the cap 18. This allows to prevent a deterioration of the sealing characteristics of the o-ring by effect of contact with contaminants and it also allows to prevent dust, dirt or other contaminants from being deposited on the outer surface of the o-ring during the extraction and reinsertion of 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)
  • Closures For Containers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP04425204A 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges Expired - Lifetime EP1580501B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE602004006711T DE602004006711T2 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges
ES04425204T ES2287679T3 (es) 2004-03-24 2004-03-24 Cartucho de filtro para sistemas de aire acondicionado de vehiculos automoviles.
AT04425204T ATE363635T1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine klimaanlage eines kraftfahrzeuges
PT04425204T PT1580501E (pt) 2004-03-24 2004-03-24 Cartucho de filtro para sistemas de ar condicionado de veículos
EP04425204A EP1580501B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges
BR0500887-5A BRPI0500887A (pt) 2004-03-24 2005-03-23 Conjunto de filtro para sistemas de ar condicionado para veìculos
ARP050101133A AR048325A1 (es) 2004-03-24 2005-03-23 Conjunto de cartucho de filtro para instalaciones de aire acondicionado para vehiculos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425204A EP1580501B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges

Publications (2)

Publication Number Publication Date
EP1580501A1 true EP1580501A1 (de) 2005-09-28
EP1580501B1 EP1580501B1 (de) 2007-05-30

Family

ID=34854752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425204A Expired - Lifetime EP1580501B1 (de) 2004-03-24 2004-03-24 Filterkartusche für eine Klimaanlage eines Kraftfahrzeuges

Country Status (7)

Country Link
EP (1) EP1580501B1 (de)
AR (1) AR048325A1 (de)
AT (1) ATE363635T1 (de)
BR (1) BRPI0500887A (de)
DE (1) DE602004006711T2 (de)
ES (1) ES2287679T3 (de)
PT (1) PT1580501E (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212205A1 (de) 2014-07-01 2016-01-07 Denso Thermal Systems S.P.A. Kappe aus Kunststoff für eine in einen Kondensator integrierte Filtergruppe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798456A1 (fr) 1999-09-10 2001-03-16 Behr Gmbh & Co Fermeture pour un collecteur d'un collecteur d'une installation de climatisation
JP2002195701A (ja) * 2000-12-21 2002-07-10 Nikkei Nekko Kk 受液器
US6446463B2 (en) * 2000-03-09 2002-09-10 S.K.G. Italiana S.P.A. Filter cartridge and condenser
FR2822518A1 (fr) * 2001-03-26 2002-09-27 Valeo Thermique Moteur Sa Bouchon de reservoir de condenseur de climatisation et reservoir comportant ce bouchon
EP1437560A1 (de) * 2003-01-07 2004-07-14 Behr Lorraine S.A.R.L. Schutzkappe für den Sammelbehälter einer Klimaanlage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798456A1 (fr) 1999-09-10 2001-03-16 Behr Gmbh & Co Fermeture pour un collecteur d'un collecteur d'une installation de climatisation
US6446463B2 (en) * 2000-03-09 2002-09-10 S.K.G. Italiana S.P.A. Filter cartridge and condenser
JP2002195701A (ja) * 2000-12-21 2002-07-10 Nikkei Nekko Kk 受液器
FR2822518A1 (fr) * 2001-03-26 2002-09-27 Valeo Thermique Moteur Sa Bouchon de reservoir de condenseur de climatisation et reservoir comportant ce bouchon
EP1437560A1 (de) * 2003-01-07 2004-07-14 Behr Lorraine S.A.R.L. Schutzkappe für den Sammelbehälter einer Klimaanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 11 6 November 2002 (2002-11-06) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212205A1 (de) 2014-07-01 2016-01-07 Denso Thermal Systems S.P.A. Kappe aus Kunststoff für eine in einen Kondensator integrierte Filtergruppe

Also Published As

Publication number Publication date
ATE363635T1 (de) 2007-06-15
ES2287679T3 (es) 2007-12-16
PT1580501E (pt) 2007-08-24
EP1580501B1 (de) 2007-05-30
DE602004006711D1 (de) 2007-07-12
DE602004006711T2 (de) 2007-10-04
AR048325A1 (es) 2006-04-19
BRPI0500887A (pt) 2005-11-01

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