EP1477750A1 - Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister - Google Patents

Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister Download PDF

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Publication number
EP1477750A1
EP1477750A1 EP03101389A EP03101389A EP1477750A1 EP 1477750 A1 EP1477750 A1 EP 1477750A1 EP 03101389 A EP03101389 A EP 03101389A EP 03101389 A EP03101389 A EP 03101389A EP 1477750 A1 EP1477750 A1 EP 1477750A1
Authority
EP
European Patent Office
Prior art keywords
filter
post
desiccant
canister
receiver
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Withdrawn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
EP03101389A
Other languages
English (en)
French (fr)
Inventor
Barbara Schwarzer
Claude Houver
Bernd Stephan
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP03101389A priority Critical patent/EP1477750A1/de
Publication of EP1477750A1 publication Critical patent/EP1477750A1/de
Withdrawn legal-status Critical Current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
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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

Definitions

  • the present invention relates generally to a filter desiccant unit for a condenser with a receiver canister for automotive air conditioning systems and in particular to a filler desiccant unit for a condenser with an integral receiver canister for automotive air conditioning systems.
  • Automotive air conditioning systems typically include a receiver canister that serves as a refrigerant reservoir, the receiver-canister being attached to or integral with a condenser of the automotive air conditioning system.
  • a conventional automotive air conditioning system including an integral receiver canister is known from EP-A-1 079 186.
  • the conventional automotive air conditioning system is comprised of a condenser C of the crossflow type having an inlet/outlet header tank 1 on one side thereof and a return tank header 2 on the other side thereof.
  • Each tank header is divided into an upper section U and a lower section L by means of respective separators 3 and 4.
  • a receiver canister 5 is integrally attached to the return tank header 2 in the manner shown in Fig. 1.
  • An inlet opening 6 connects the upper section U of the return tank header 2 to the receiver canister 5 while an outlet opening 7 connects the lower section L of the return tank header 2 to the receiver canister 5.
  • the condenser C is divided into an upper condensing section 8 and a lower sub-cooling section 9.
  • the operation of the condenser with receiver canister of EP-A-1 079 186 is as follows. Compressed refrigerant vapour enters the upper condensing section 8 through the upper section U of the inlet/outlet header tank 1. The vapour is condensed in the upper condensing section 8 and enters the upper section U of the return tank header 2 as saturated liquid. From there it flows through the inlet opening 6 into the receiver canister 5 where it backs up to a liquid level of varying height. From the receiver canister 5 liquid refrigerant flows through the outlet opening 7 into the sub-cooling section 9 of the condenser C where it is further cooled down below the saturation temperature. From the sub-cooling section 9 the refrigerant exits the condenser C through the lower section L of the inlet/outlet header 2.
  • the receiver canister 5 is represented as an empty container having for instance a substantially cylindrical form with no particular internal structure. Nevertheless, as known from EP-A-1 079 186 and shown in present Fig. 2, the receiver-canister 5 includes a desiccant unit 10 with a desiccant container 24 preferably in form of a tube of mesh material which is slidable within the receiver canister 5 and which is filled with a conventional granular desiccant material.
  • the tube is sealed at one end thereof and is fixed at the opposite end thereof to a lobed base 28, which is provided with a post 30 and a standoff 26 at its opposite end.
  • the lobed base 28 makes an interference fit with the inside of the receiver canister 5 and allows at the same time refrigerant flow towards a top end cap 36 of the receiver canister 5.
  • the standoff 26 rests on a bottom end cap 34 of the receiver canister 5, the post 30 having a length such as to leave the inlet and outlet openings 5 and 6 unblocked, as apparent from Fig. 2.
  • a further general requirement for automotive air conditioning systems is the presence of a filter element capable of retaining a broad spectrum of soluble contaminants, as known from EP-A-1 132 695.
  • the filter element of the integral receiver canister according to EP-A-1 132 695 is part of a desiccant containment of the desiccant unit, which makes it impossible to position the filter element independently from the desiccant element within the assembly.
  • the filter element of EP-A-1 132 695 which is provided at the outlet zone of the integral receiver canister is more difficult to clean and/or remove.
  • the desiccant containment of EP-A-1 132 695 can not be readily adapted to various receiver canister sizes.
  • the filter desiccant unit for a condenser with a receiver canister for automotive air conditioning systems of the present invention comp rises a filter element, a desiccant container and a structure, such as a post, supporting both the filter element and the desiccant container.
  • the filter element preferably extends in a substantially perpendicular manner to the post.
  • the filter element is substantially disk shaped, the filter element being provided with a filtering mesh, which is an integral part of a disc formed or fixed onto the post.
  • the filtering mesh may be attached to the disc in a bag type manner in order to increase the free filter surface available to refrigerant passing therethrough.
  • the filter element may be a truncated cone shaped filter-element extending symmetrically around at least a section of the post.
  • the length of the post is preferably substantially equal to the length of the longitudinal axis of the receiver canister such that, in the assembled state of the filter desiccant unit with the receiver canister, the post is clamped between a top end cap and a bottom end cap of the receiver canister.
  • the diameter of the post may be substantially smaller than the diameter the receiver-canister.
  • the post is substantially straight and extends substantially centrally of the receiver canister.
  • the desiccant container may be provided in form of a bag that is suspended from the post, the post being provided with a suspension device at its top.
  • the desiccant container is provided in form of a bag that is maintained by a base formed onto the post.
  • the post has a bent configuration including a lower section for holding the filter element and extending substantially centrally of the receiver canister, an offset section extending near an inner wall of the receiver canister and a pin extending from the offset section towards the center of the receiver canister.
  • the present invention accordingly provides for a filter desiccant unit including a filter element, which avoids the drawbacks of the prior art and provides for a filter desiccant unit, which can be easily used with a plurality of differently sized receiver canisters. Furthermore the present invention provides for a filter desiccant unit, wherein the desiccant container can be readily removed along with the filter element from the receiver canister and wherein the desiccant container and the filter element can be accurately positioned within the receiver canister.
  • An additional advantage of the present invention is achieved in the provision of a filter desiccant unit having an integral architecture making it a compact assembly as well as easy to manufacture and handle.
  • This filter desiccant unit is easily adaptable to different integral receiver canister dimensions and configurations.
  • the present invention also provides the advantage of a filter desiccant unit for automotive air-conditioning systems including a filter element with improved filtering performance due preferably to an increased filter surface.
  • the filter desiccant unit 10 which is generally indicated at reference numeral 10, is shown inserted into the receiver canister 5.
  • the desiccant unit 10 includes a post 30 integrating according to the present invention a filter element 12 and the desiccant container 24 containing granular desiccant material.
  • the receiver canister 5 is an integral part of the condenser C the general requirement is that the desiccant unit 10 including the desiccant container 24 and the filter element 12 can be removed and replaced as an individual component or subassembly independently of the receiver canister 5 during the lifetime of the condenser C. For this reason either the top end cap 36 or the bottom end cap 34 of the receiver canister 5 or both can be removable according to the present invention.
  • the post 30 is preferably located centrally within the substantially cylindrical receiver canister 5.
  • the diameter of the post 30 is substantially smaller than that of the receiver-canister 5.
  • the length of the post 30 is chosen so that it makes an interference fit, with the bottom and top end caps 34, 36 of the receiver canister 5, thus fixing the position of the post 30 within the receiver canister 5.
  • the filter desiccant unit according to the present invention can be used with variously sized receiver canisters 5 by merely cutting the post 30 to an appropriate length.
  • the present filter element 12 is provided with a filtering mesh 13 which is an integral part of a disc 14 formed or fixed onto the post 30. As shown in Fig. 3 the disk 14 is provided with openings that are covered with the filtering mesh 13, such that fluid passage may occur.
  • the disk 14 has an outside diameter that makes a tight interference fit with the inner wall of the receiver canister 5 thus avoiding that any refrigerant bypasses the filter element 12.
  • the position of the disc 14 on the post 30 is chosen such as to locate the filter element 12 between the inlet opening 6 and the outlet opening 7 of the receiver canister 5. Its position may be varied, as explained hereinabove.
  • the filtering mesh 13 can also be attached to the disc 14 in a bag type manner in order to increase the free filter surface available to refrigerant passing therethrough.
  • Fig. 6 Such an embodiment of the invention is represented in Fig. 6.
  • the desiccant container 24 may be provided in form of a bag that is suspended from the post 30 which is provided with a suspension device at its top.
  • the desiccant bag maintains a generally cylindrical shape dimensioned as to keep a small radial clearance to the inner wall of the receiver canister 5.
  • the height of the desiccant bag and the suspension point thereof are chosen as to maintain the lower end of the desiccant bag above the inlet opening 6, thus ensuring free flow of the refrigerant into the receiver canister 5.
  • the desiccant bag is fixed to the post 30 due to its envelope type configuration and to the suspension device on the top of the post 30.
  • the position of the desiccant bag could also be maintained by a base 28' formed onto the post 30 just above the inlet opening 6 of the receiver canister 5 instead of the suspension device.
  • the base 28' may be shaped in a similar manner to that shown in Fig. 2 at reference numeral 28.
  • the post is de-centered and includes a lower substantially central section 30', an offset section 30" extending near the inner wall of the receiver canister 5 and a pin or a stud 30''' extending from the offset section 30" towards the center receiver canister 5.
  • the pin or the stud 30''' provide for the suspension device in a similar manner to the embodiment of Fig. 3.
  • the position of the desiccant bag can also be maintained by a base 28' formed onto the lower section 30' of the post 30 just above the inlet opening 6 of the receiver canister 5 instead of the suspension device.
  • the base 28' may be shaped in a similar manner to that shown in Fig. 2 at reference numeral 28.
  • the filter element 12' is in the shape of a truncated cone or a bucket.
  • the filter element shown in Fig. 5 provides for particular advantages in that it has an increased filter surface and the particles of refrigerant will remain inside the filter element 12' during service.
  • the filter element 12' is provided preferably with a filtering mesh similar to that of the embodiments described in respect to figures 3 and 4.
  • FIG. 5 shows the filter desiccant unit provided with a lobed base 28" for maintaining the position of the desiccant bag
  • a lobed base 28" for maintaining the position of the desiccant bag
  • the truncated cone shaped filter element 12' can be advantageously used in conjunction with the filter desiccant unit embodiments shown in figures 2 and 3 hereinbefore.

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  • 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)
  • Air-Conditioning For Vehicles (AREA)
EP03101389A 2003-05-16 2003-05-16 Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister Withdrawn EP1477750A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03101389A EP1477750A1 (de) 2003-05-16 2003-05-16 Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03101389A EP1477750A1 (de) 2003-05-16 2003-05-16 Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister

Publications (1)

Publication Number Publication Date
EP1477750A1 true EP1477750A1 (de) 2004-11-17

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EP03101389A Withdrawn EP1477750A1 (de) 2003-05-16 2003-05-16 Filter- und Trocknereinheit für Verflüssiger mit integriertem Sammlerkanister

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EP (1) EP1477750A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464902A3 (de) * 2003-04-01 2005-06-29 Delphi Technologies, Inc. Trocknerabstandshalter in einem Verdichterbehälter einer Kraftfahrzeugklimaanlage
WO2007133447A1 (en) * 2006-05-09 2007-11-22 Flow Dry Technology, Inc. Desiccant bag and filter assembly
JP2012189313A (ja) * 2011-03-09 2012-10-04 Delphi Technologies Inc 乾燥剤バッグを含む冷媒リザーバアッセンブリを持つコンデンサ
FR2976818A1 (fr) * 2011-06-23 2012-12-28 Filtertek Cartouche de filtration et de deshydratation de fluide qui la traverse
JP2014102058A (ja) * 2012-11-22 2014-06-05 Fuji Koki Corp アキュムレータ
JP2015132440A (ja) * 2014-01-15 2015-07-23 株式会社ケーヒン・サーマル・テクノロジー コンデンサ
EP1893926B1 (de) 2005-06-02 2016-08-10 Denso Automotive Deutschland GmbH Kondensator für eine klimaanlage

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199960A (en) * 1978-10-26 1980-04-29 Parker-Hannifin Corporation Accumulator for air conditioning systems
US5537839A (en) * 1992-11-18 1996-07-23 Behr Gmbh & Co. Condenser with refrigerant drier
WO1998004875A1 (en) * 1996-07-31 1998-02-05 Parker-Hannifin Corporation Receiver/dryer and method of assembly
JPH11304304A (ja) * 1998-04-24 1999-11-05 Fujikoki Corp レシーバドライヤ
US6170288B1 (en) * 1999-02-26 2001-01-09 Multisorb Technologies, Inc. Receiver and filter and adsorbent unit therefor
EP1079186A1 (de) * 1999-08-27 2001-02-28 Delphi Technologies, Inc. Trockner für Verflüssiger mit integriertem Sammler
US6279341B1 (en) * 1999-07-01 2001-08-28 Multisorb Technologies, Inc. Self-retaining adsorbent unit
US20020174676A1 (en) * 2000-12-29 2002-11-28 Incorvia Samuel A. Self-retaining elongated adsorbent unit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199960A (en) * 1978-10-26 1980-04-29 Parker-Hannifin Corporation Accumulator for air conditioning systems
US5537839A (en) * 1992-11-18 1996-07-23 Behr Gmbh & Co. Condenser with refrigerant drier
WO1998004875A1 (en) * 1996-07-31 1998-02-05 Parker-Hannifin Corporation Receiver/dryer and method of assembly
JPH11304304A (ja) * 1998-04-24 1999-11-05 Fujikoki Corp レシーバドライヤ
US6170288B1 (en) * 1999-02-26 2001-01-09 Multisorb Technologies, Inc. Receiver and filter and adsorbent unit therefor
US6279341B1 (en) * 1999-07-01 2001-08-28 Multisorb Technologies, Inc. Self-retaining adsorbent unit
EP1079186A1 (de) * 1999-08-27 2001-02-28 Delphi Technologies, Inc. Trockner für Verflüssiger mit integriertem Sammler
US20020174676A1 (en) * 2000-12-29 2002-11-28 Incorvia Samuel A. Self-retaining elongated adsorbent unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464902A3 (de) * 2003-04-01 2005-06-29 Delphi Technologies, Inc. Trocknerabstandshalter in einem Verdichterbehälter einer Kraftfahrzeugklimaanlage
EP1893926B1 (de) 2005-06-02 2016-08-10 Denso Automotive Deutschland GmbH Kondensator für eine klimaanlage
WO2007133447A1 (en) * 2006-05-09 2007-11-22 Flow Dry Technology, Inc. Desiccant bag and filter assembly
US7927407B2 (en) 2006-05-09 2011-04-19 Flow Dry Technology, Inc. Desiccant bag and filter assembly
JP2012189313A (ja) * 2011-03-09 2012-10-04 Delphi Technologies Inc 乾燥剤バッグを含む冷媒リザーバアッセンブリを持つコンデンサ
EP2498028A3 (de) * 2011-03-09 2014-05-07 Delphi Technologies, Inc. Kondensator mit einer Kühlmittelbehälteranordnung mit einem Trocknungsmittelbeutel
US10168085B2 (en) 2011-03-09 2019-01-01 Mahle International Gmbh Condenser having a refrigerant reservoir assembly containing a desiccant bag
FR2976818A1 (fr) * 2011-06-23 2012-12-28 Filtertek Cartouche de filtration et de deshydratation de fluide qui la traverse
WO2013001429A1 (en) * 2011-06-23 2013-01-03 Filtertek Cartridge for filtration and dehydration of fluid
JP2014102058A (ja) * 2012-11-22 2014-06-05 Fuji Koki Corp アキュムレータ
JP2015132440A (ja) * 2014-01-15 2015-07-23 株式会社ケーヒン・サーマル・テクノロジー コンデンサ

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