EP1387134B1 - Sécheur pour condenseur à fluide frigorigène - Google Patents

Sécheur pour condenseur à fluide frigorigène Download PDF

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Publication number
EP1387134B1
EP1387134B1 EP03015294A EP03015294A EP1387134B1 EP 1387134 B1 EP1387134 B1 EP 1387134B1 EP 03015294 A EP03015294 A EP 03015294A EP 03015294 A EP03015294 A EP 03015294A EP 1387134 B1 EP1387134 B1 EP 1387134B1
Authority
EP
European Patent Office
Prior art keywords
collector
refrigerant
drier
dryer
molded part
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
EP03015294A
Other languages
German (de)
English (en)
Other versions
EP1387134A3 (fr
EP1387134A2 (fr
Inventor
Uwe Dipl.-Ing. Förster (FH)
Kurt Dr.-Ing. Molt
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1387134A2 publication Critical patent/EP1387134A2/fr
Publication of EP1387134A3 publication Critical patent/EP1387134A3/fr
Application granted granted Critical
Publication of EP1387134B1 publication Critical patent/EP1387134B1/fr
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
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • 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

Definitions

  • the invention relates to a dryer for a refrigerant circuit, in particular for motor vehicle air conditioners, and a collector with such a dryer and a heat exchanger with such a collector.
  • a dryer was by the DE-A 197 12 714 the applicant known.
  • the invention also relates to the use of a polymer product known under the trademark CSP Technologies .
  • Automotive air conditioning systems are operated with a refrigerant (R134 a), which, for. B. due to leaks in the system after a period of operation moisture (H2O) absorbs.
  • This water in the refrigerant is undesirable and is therefore removed by means of a dryer located either in a separate collector or a collector integrated with the condenser.
  • the applicant has known a so-called capacitor module in which the collector is integrated into the capacitor and accommodates a dryer cartridge or a so-called dryer bag.
  • the dryer cartridge consists of a perforated plastic container, which is filled with dryer granules, z. B. off Molecular sieve is filled.
  • the dryer bag consists of a permeable to the refrigerant fabric or nonwoven and is also filled with dryer granules.
  • a similar dryer cartridge was replaced by the DE-A 197 12 714 the applicant: it consists of a cage-like plastic container, which is lined with a sieve and also receives dryer granules in the form of a bed in itself. So that the granules are not subjected to excessive abrasion during operation in the vehicle, the granule filling is compressed by a spring-loaded disc which is movable within the plastic container.
  • These known dryer designs for refrigerant circuits are associated with a certain manufacturing and cost in terms of their production and shipment and positioning in the collector.
  • US-A-4 013566 discloses a dryer which is formed as a hollow cylindrical injection molded part and contains a polymer and molecular sieve.
  • the dryer is produced as a plastic injection-molded part from a known mass, which consists essentially of a polymer, a so-called channel former and a molecular sieve.
  • the molecular sieve performs the function of drying, ie the dehydration of the refrigerant.
  • the channel former causes channels to form in the polymer composition.
  • the refrigerant has access from the outside to the molecular sieve and can be dried.
  • the advantage of this dryer is that two functions, namely the container and the drying are combined in an injection molded part, because the polymer material absorbs the dryer in itself and thus acts as a sort of container.
  • the entire dryer is made of plastic, such as the commercially available material sold under the trademark "CSP Technologies", as an injection molded part of any shape.
  • the injection molded part is adapted to the inner shape of a collector of the refrigerant circuit.
  • the injection-molded part can be solid or else designed as a hollow body - it merely has to provide sufficient drying material (molecular sieve) for the drying of the refrigerant.
  • This injection molded part can also be arranged at any point in the collector and z. B. be fixed by clamping.
  • the outer surface of the injection molded part is provided with openings, through which the refrigerant receives better access to the "channel system" with the embedded molecular sieve.
  • an enlargement of the surface of the injection-molded part which is achieved for example by elevations and / or depressions such as depressions, grooves, grooves and the like.
  • the injection molded part may for example have a fir tree-shaped structure.
  • the solution to the above problem is also the use of a known polymer product, which is known and sold under the brand CSP Technologies .
  • the new use of this product is that it is processed as an injection molded part in a plastic injection molding machine and used as a dryer for dehydrating refrigerant of an air conditioner.
  • the polymer composition is thus used as an amorphous carrier of the molecular sieve or dryer material.
  • the dryer according to the invention can be connected to a filter unit, so that a refrigerant flowing through or flowing around the dryer is also filtered.
  • the connection is here For example, a plug, a Clips-, an adhesive or any other connection.
  • the dryer forms a structural unit with a filter unit.
  • the filter unit may, for example, have a fine-meshed network, are filtered with the foreign body as with a sieve from the refrigerant.
  • the dryer according to the invention is used in a collector for a refrigerant in a closed circuit, so that a refrigerant flowing through the collector can be dried, that is, that the refrigerant water can be withdrawn.
  • a filter element arranged in the direction of flow before or after the dryer such as a sieve, the refrigerant can optionally be additionally filtered, with which the collector combines several functions in itself.
  • the collector is used with the dryer according to the invention in a heat exchanger with tubes, fins and two headers such that a refrigerant which flows through the heat exchanger, before, during or subsequently flows through the collector.
  • the heat exchanger is designed as a capacitor.
  • Such heat exchangers are through the DE 42 38 853 C2 known.
  • Fig. 1 shows an injection molded part 1, which acts as a dryer in the refrigerant circuit of a motor vehicle air conditioning, not shown.
  • This injection-molded part 1 is produced by injection molding as a solid cylinder made of a special plastic mixture, which will be explained below.
  • the injection molded part 1 has circumferentially distributed cam-like spacers 2, which serve to fix in a housing, not shown here.
  • openings 3 are provided, which allow a better access of the refrigerant into the internal structure of the dryer 1.
  • the mass of this injection-molded part 1 is porous, wherein the carrier, which also causes the strength, consists of a polymer.
  • the plastic in the form of polymer is traversed by a multiplicity of channels, which are produced by a so-called channel former during manufacture. In these channels is incorporated as a third component, a molecular sieve in the form of particles.
  • Such a plastic blend is known as a commercial product under the CSP Technologies brand.
  • FIG. 2 shows an enlarged view of a detail X from a section in the plane II-II through the mass of the injection molded part 1 - in a highly simplified, schematic representation.
  • a carrier substance 4 cross-hatched
  • channels 5 are about cubic particles 6 (hatched) embedded, which are referred to as molecular sieve and consist of a known dryer material. This molecular sieve 6 is therefore able to absorb the moisture contained in the refrigerant.
  • Fig. 3 shows a portion of a refrigerant condenser 10 having a manifold 11 and an integrated collector 12, the z. T. shown as a view and z. T. is cut open, ie the window 13 releases the view into the interior.
  • the collector 12 is connected in a known manner via the two overflow openings 14, 15 with the manifold 11, so that the collector 13 is constantly flowed through during operation of the air conditioner of refrigerant.
  • the overflow opening 14 of the dryer 1 shown in Fig. 1 is arranged, approximately coaxial with the cross section of the collector 13.
  • an annular gap 16 over the the refrigerant (not shown) rise in the liquid or vapor phase and the surface of the dryer 1 wash around or can flow around.
  • the refrigerant first penetrates under the surface of the injection molded part 1 and thus enters the channel structure 5 shown schematically in FIG. 2 with the molecular sieve 6. This causes a drying of the refrigerant.
  • the collector 13 can - which is not shown here - be provided with a removable lid, so that an exchange of the injection molded part 1 for maintenance is possible.
  • the injection molded part 1 is fixed in a manner not shown in the collector 13, z. B. by clamping with the inner wall of the collector 13 or by resting on a screen member, not shown, in the lower region of the collector thirteenth
  • this dryer In the illustrated position of the dryer 1, the latter is therefore not flowed through by the refrigerant, as is the case in the prior art with granulate containers, but substantially flows around it, the refrigerant diffusing from the outside through the openings 3 into the channel system of the porous mass , In this respect, this dryer also does not represent a flow resistance for the refrigerant.
  • FIG. 4 shows a further arrangement of a dryer 20 in a collector 21 of a capacitor module 22.
  • the dryer 20 consists of a polymer, a channel former and a molecular sieve, and in contrast to the dryer illustrated in FIG. 3, is formed integrally with a filter unit 23 in that the filter unit 23 is injection-molded onto the dryer 20.
  • the filter unit 23 has a frame 24 with openings 25 for a flow of a refrigerant.
  • Sealing lips 26 provide a seal against the collector 21, so that the refrigerant is forced to flow through a screen 27 injected into the filter unit 23.
  • the sealing lips 26 serve to fix the component group consisting of the filter unit 23 and the dryer 20 in the collector 21.
  • the collector 21 is integrated into the capacitor module 22 in such a way that a refrigerant flowing through the condenser 22, after cooling in the tube-and-fin network 28, flows through an inlet opening 29 from a collector tube 30 of the capacitor module 22 into the collector 21. After an optional drying in the dryer 20 and a filtering by the filter unit 23, the refrigerant flows through an outlet opening 31 back into the manifold 30 and from there to a further cooling in a not further identified subcooling of the capacitor module 22nd

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Drying Of Solid Materials (AREA)

Claims (8)

  1. Sécheur pour un circuit de réfrigérant, en particulier pour des installations de climatisation de véhicule, le sécheur étant conçu sous la forme d'une pièce moulée par injection (1), dont la masse contient essentiellement trois composants, à savoir un polymère (4), un formateur de canaux et un tamis moléculaire (6), la pièce moulée par injection étant conçue comme un cylindre creux et présentant sur son pourtour des orifices (3) pour l'entrée du réfrigérant.
  2. Sécheur selon la revendication 1, caractérisé en ce que le tamis moléculaire est intégré dans la masse polymère (4) et/ou dans des canaux (5) traversant la masse polymère.
  3. Sécheur selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que la pièce moulée par injection (1) est fixée dans le collecteur (13).
  4. Sécheur selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une unité de filtrage peut être reliée au sécheur.
  5. Sécheur selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une unité de filtrage forme avec le sécheur une unité de construction.
  6. Utilisation d'une pièce moulée par injection d'une seule pièce constituée des composants polymère, formateur de canaux et tamis moléculaire, qui est conçue sous la forme d'un cylindre creux et présente sur son pourtour des orifices (3) pour l'entrée du réfrigérant par l'extérieur, pour le séchage (déshydrogénation) de réfrigérant dans un circuit de réfrigérant pour des installations de climatisation, en particulier pour des véhicules.
  7. Collecteur pour un réfrigérant dans un circuit fermé, dans un circuit de réfrigérant d'une installation de climatisation, en particulier pour un véhicule, en particulier caractérisé en ce qu'un sécheur selon l'une quelconque des revendications 1 à 5 est réceptionné dans le collecteur.
  8. Échangeur de chaleur, en particulier condenseur, avec des tuyaux, nervures, deux pièces supérieures et un collecteur, caractérisé en ce que le collecteur est réalisé selon la revendication 7.
EP03015294A 2002-07-31 2003-07-07 Sécheur pour condenseur à fluide frigorigène Expired - Lifetime EP1387134B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10234889 2002-07-31
DE10234889A DE10234889A1 (de) 2002-07-31 2002-07-31 Trockner für Kältemittelkondensator

Publications (3)

Publication Number Publication Date
EP1387134A2 EP1387134A2 (fr) 2004-02-04
EP1387134A3 EP1387134A3 (fr) 2005-12-21
EP1387134B1 true EP1387134B1 (fr) 2007-08-15

Family

ID=30010527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015294A Expired - Lifetime EP1387134B1 (fr) 2002-07-31 2003-07-07 Sécheur pour condenseur à fluide frigorigène

Country Status (4)

Country Link
EP (1) EP1387134B1 (fr)
AT (1) ATE370374T1 (fr)
DE (2) DE10234889A1 (fr)
ES (1) ES2291567T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566600A1 (fr) * 2004-02-20 2005-08-24 Delphi Technologies, Inc. Cartouche déshydratante
DE102005005187A1 (de) 2005-02-03 2006-08-10 Behr Gmbh & Co. Kg Kondensator für eine Klimaanlage, insbesondere eines Kraftfahrzeuges
DE102005005186A1 (de) * 2005-02-03 2006-08-10 Behr Gmbh & Co. Kg Sammler eines Kältemittelkondensators, insbesondere für ein Kraftfahrzeug
EP1764569B1 (fr) * 2005-09-16 2013-11-27 Behr GmbH & Co. KG Accumulateur avec un élément sécheur-filtre pour un condenseur
DE102006056469A1 (de) * 2006-11-28 2008-05-29 Behr Gmbh & Co. Kg Sammler für einen Kältekreis
CN201852383U (zh) 2010-11-17 2011-06-01 浙江三花汽车控制系统有限公司 一种热交换器及其贮液器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013566A (en) * 1975-04-07 1977-03-22 Adsorbex, Incorporated Flexible desiccant body
DE4245046C8 (de) 1992-11-18 2008-08-21 Behr Gmbh & Co. Kg Kondensator für eine Klimaanlage eines Fahrzeuges
DE4319293C2 (de) * 1993-06-10 1998-08-27 Behr Gmbh & Co Kondensator für eine Klimaanlage
DE4402927B4 (de) * 1994-02-01 2008-02-14 Behr Gmbh & Co. Kg Kondensator für eine Klimaanlage eines Fahrzeuges
US6124006A (en) * 1995-04-19 2000-09-26 Capitol Specialty Plastics, Inc. Modified polymers having controlled transmission rates
DE29700640U1 (de) * 1997-01-15 1997-05-22 Controls Gmbh Deutsche Fahrzeug-Klimaanlage und Trocknerpatrone für eine Fahrzeug-Klimaanlage
DE19712714A1 (de) 1997-03-26 1998-10-01 Behr Gmbh & Co Einsatz für ein Sammlerprofil eines Kondensators
DE29721546U1 (de) * 1997-12-05 1998-01-29 Controls Gmbh Deutsche Trocknerpatrone für Fahrzeug-Klimaanlage

Also Published As

Publication number Publication date
ES2291567T3 (es) 2008-03-01
EP1387134A3 (fr) 2005-12-21
DE10234889A1 (de) 2004-02-19
DE50307933D1 (de) 2007-09-27
ATE370374T1 (de) 2007-09-15
EP1387134A2 (fr) 2004-02-04

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