EP1361401B1 - Filter drier cartridge - Google Patents

Filter drier cartridge Download PDF

Info

Publication number
EP1361401B1
EP1361401B1 EP20030010038 EP03010038A EP1361401B1 EP 1361401 B1 EP1361401 B1 EP 1361401B1 EP 20030010038 EP20030010038 EP 20030010038 EP 03010038 A EP03010038 A EP 03010038A EP 1361401 B1 EP1361401 B1 EP 1361401B1
Authority
EP
European Patent Office
Prior art keywords
filter
screen
filter cage
cage
openings
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
EP20030010038
Other languages
German (de)
French (fr)
Other versions
EP1361401A1 (en
Inventor
Adam Pawlowski
Albrecht Waldenburg
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.)
Hansa Metallwerke AG
Original Assignee
Hansa Metallwerke AG
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 Hansa Metallwerke AG filed Critical Hansa Metallwerke AG
Publication of EP1361401A1 publication Critical patent/EP1361401A1/en
Application granted granted Critical
Publication of EP1361401B1 publication Critical patent/EP1361401B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • Such a filter dryer cartridge is in the EP 1 147 930 A1 described.
  • the filter cage has only a single set of window openings, all of which are at the same axial height.
  • the sieves which cover these window openings can all be radiated radially in the same way radially from the refrigerant over their entire area. It has been found in practice that enforce these screens relatively quickly with dirt, so that after a relatively short time the filter dryer cartridge must be replaced or cleaned.
  • Object of the present invention is to provide a filter dryer cartridge of the type mentioned in such a way that their life is longer.
  • the inventively provided Siebong provides with the existing at the bottom of the filter cage annular shell for a kind of "dirt trap” in which entrained by the refrigerant dirt particles, such as abrasion of the desiccant, and can be collected for a long time, without to hinder the flow through the filter cage.
  • This dirt particles can namely pass through the relatively coarse mesh screen of the portafilter from top to bottom, the vibrations and shocks to which the entire condenser is exposed during operation, promotes the passage of dirt particles.
  • the return of the dirt particles from bottom to top, which is not supported by such vibrations, however, is much less likely, so that the screen of the portafilter acts in a sense similar to a check valve.
  • the window openings arranged above the sieve carrier or the sieves mounted thereon can therefore only be reduced in size by the dirt which has accumulated in the lower annular bowl Probability can be achieved. At least these upper window openings therefore remain free for a long time for a flow.
  • the fact that the underlying window openings of the filter cage, for which the filter holder can not prevent an upward movement, clog over time, is in this context without interest.
  • the design according to the invention can significantly increase the time that the capacitor can operate without servicing the filter-dryer cartridge.
  • the filter cage has a set of first window openings arranged at the same axial height and a set of further window openings arranged therebelow at a different axial height.
  • the flow cross section for the refrigerant is very large in this way, so that the throttle losses remain small.
  • the screen surfaces of the filter cage and / or the screen carrier may optionally consist of screen fabric or be formed by perforations in the filter cage and / or the filter holder.
  • the filter holder on his radially outer edge is provided with a sealing lip. This sealing lip settles in the mounting position of the filter dryer cartridge on the inner circumferential surface of the collector housing and ensures that the refrigerant must actually flow through the carried by the portafilter screens on its way down.
  • reference numeral 1 denotes the housing of a collector which is part of a condenser as mentioned in the above-mentioned EP 1 147 930 A1 is described.
  • a tube-and-fins block through which refrigerant flows.
  • the partially liquid phase, partially in the gaseous phase refrigerant leaves the upper portion of the tube-fin block and enters via an inlet port 2 in the interior of the housing 1 of the collector, flows through this in the manner to be described below and passes through an outlet opening 3 from the housing 1 of the collector and in a lower section of the tube-rib block.
  • a filter dryer cartridge is arranged, which carries the reference numeral 4 as a whole. Again, this is shown in Figure 1 only in its lower part.
  • the filter-dryer cartridge 4 comprises a cylindrical, tubular desiccant housing 5, which is provided with a plurality of radial passage openings 6. Inside the desiccant housing 5 is a bed 7 of desiccant, the grain size is so large that the individual desiccant particles through the openings 6 of the desiccant housing 5 can not happen.
  • the desiccant housing 5 is elastically locked at its lower edge, which for this purpose has radially inwardly projecting projections 8, in a circumferential groove 9 of a generally provided with the reference numeral 10 filter cage.
  • the filter cage 10 has the shape of an upside down, so downwardly open pot. It has in its peripheral surface a first set of large window openings 11 which are covered by screen material 12. Axially below the first set of window openings 11, a second set of window openings 13 is provided, which are also covered with screen material 14.
  • axially parallel webs 15 which are also in the same axial height window openings 13 by axially parallel webs 16, while lying at different axial heights window openings 11 on the one hand and 13 on the other hand by a circumferentially extending web 17th are separated from each other.
  • a radially outwardly extending annular shell 18 is formed on this, which terminates in its radially outermost region in a sealing lip 19.
  • the sealing lip 19 is elastically resiliently against the inner circumferential surface of the housing 1 of the collector.
  • a groove 20 is formed in the outer circumferential surface of the filter cage 10.
  • an annular, downwardly conically widening portafilter 21 is used. This has in its conical lateral surface, as can be seen in particular in Figure 4, four annular segment-shaped openings 22, 23, 24, 25, which are each covered with coarse-meshed screen material 26.
  • the lower, radially outer edge of the portafilter 21 is bent back upwards and formed as a sealing lip 27, which bears resiliently on the inner circumferential surface of the housing 1 of the collector.
  • the present in gaseous form of the refrigerant flowing through the inlet opening 2 into the interior of the housing 1 flows primarily into the region of the collector shown in Figure 1 and occurs there, but also in the region of the desiccant housing 5 shown in the drawing, on the Through openings 6 in the interior of the desiccant housing 5 and is there dried by the desiccant 7.
  • the liquid phase of the refrigerant flows mainly in the direction shown by the arrows in the annular gap between the filter-dryer cartridge 4 and the housing 1 of the collector down and then with a first partial flow in the radial direction through the upper window openings 11 of the filter cage 10 inward, there again changes its flow direction and flows in the axial direction down from the filter cage 10 and through the outlet port. 3 of the housing 1 from the collector and in the not shown tube-fin block of the capacitor.
  • a second partial flow of the liquid refrigerant passes through the meshes of the screen material 26, then flows radially inwardly through the lower window openings 13 of the filter cage 10 and the screen material 14 covering these openings 13, merges with the refrigerant flow which has passed through the upper window openings 11 and flows together with this via the outlet opening 3.
  • Dirt particles for example, abrasion of the desiccant material 7, which is carried by the refrigerant flow, is retained by the screen material 12 of the upper window openings 11 and the screen material 14 of the lower window openings 13. Due to the vibrations to which the entire condenser and in particular also the filter cage 10 is exposed during operation of the plant, dirt retained by the filter material 12 of the upper window openings 11 passes through the coarse mesh material 26 via the openings 22 to 25 of the portafilter 21 Also, the passage of the screen material 26 is supported by the vibrations to which the filter cage 10 is constantly exposed.
  • a return of the dirt particles that have settled in the annular shell 18 of the filter cage 10, in the region of the upper window openings 11 of the screen cage 10 is largely prevented by the coarse-meshed screen material 26 of the portafilter 21.
  • the upward movement of the dirt is - unlike the downward movement - not supported by the vibrations of the Siebhimfiges 10 so that a sort of "check valve" is formed by the Siebango 21 and the sieve material located on it for the movement of dirt particles , However, this does not completely prevent a movement in the reverse direction but makes them only less likely than the movement of the dirt particles in the forward direction, ie down.
  • the filter holder 21 therefore fulfills the function of a "dirt trap" in interaction with the annular shell 18 of the filter cage 10.

Description

Die Erfindung betrifft eine Filtertrocknerpatrone für den Sammler eines Kondensators einer Klimaanlage, insbesondere einer Kraftfahrzeug-Klimaanlage, mit

  1. a) einem Trockenmittelgehäuse, in dem ein Trockenmittel untergebracht ist und das Durchströmungsöffnungen für das Kältemittel der Klimaanlage aufweist;
  2. b) einem unterhalb des Trockenmittelgehäuses angeordneten Filterkäfig, der in einer Mantelfläche mindestens eine erste eine Siebfläche bildende Fensteröffnung aufweist und der an seinem unteren Ende eine radial verlaufende ringförmige Schale aufweist.
The invention relates to a filter dryer cartridge for the collector of a condenser of an air conditioner, in particular a motor vehicle air conditioning, with
  1. a) a desiccant housing, in which a desiccant is housed and having the flow openings for the refrigerant of the air conditioner;
  2. b) a filter cage arranged beneath the desiccant housing, which has in a lateral surface at least one first window opening forming a sieve surface and which has a radially extending annular shell at its lower end.

Eine derartige Filtertrocknerpatrone ist in der EP 1 147 930 A1 beschrieben. Hier besitzt der Filterkäfig nur einen einzigen Satz von Fensteröffnungen, die sich alle in derselben axialen Höhe befinden. Die Siebe, welche diese Fensteröffnungen überdecken, können alle über ihre gesamte Fläche hinweg in gleicher Weise radial vom Kältemittel angeströmt werden. Es hat sich in der Praxis herausgestellt, daß sich diese Siebe verhältnismäßig rasch mit Schmutz zusetzen, so daß bereits nach verhältnismäßig kurzer Zeit die Filtertrocknerpatrone ausgetauscht oder gesäubert werden muß.Such a filter dryer cartridge is in the EP 1 147 930 A1 described. Here, the filter cage has only a single set of window openings, all of which are at the same axial height. The sieves which cover these window openings can all be radiated radially in the same way radially from the refrigerant over their entire area. It has been found in practice that enforce these screens relatively quickly with dirt, so that after a relatively short time the filter dryer cartridge must be replaced or cleaned.

Aufgabe der vorliegenden Erfindung ist es, eine Filtertrocknerpatrone der eingangs genannten Art so auszubilden, daß ihre Standzeit länger ist.Object of the present invention is to provide a filter dryer cartridge of the type mentioned in such a way that their life is longer.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß

  1. f) der Filterkäfig mindestens eine weitere eine Siebfläche bildende Fensteröffnung aufweist, die unterhalb der mindestens einen ersten Fensteröffnung angeordnet ist und von dieser durch einen in Umfangsrichtung verlaufenden Materialsteg getrennt ist;
  2. g) im Bereich des Materialstegs an dem Filterkäfig ein sich radial nach außen erstreckender Siebträger befestigt ist, der ein verhältnismäßig grobmaschiges Sieb trägt, das von dem Kältemittel auf dem Weg von oben zu der mindestens einen weiteren Fensteröffnung durchströmt werden muß.
This object is achieved in that
  1. f) the filter cage has at least one further screen opening forming a window opening, which is arranged below the at least one first window opening and is separated from the latter by a material web extending in the circumferential direction;
  2. g) in the region of the material web on the filter cage a radially outwardly extending portafilter is attached, which carries a relatively coarse-meshed screen, which must be traversed by the refrigerant on the way from above to the at least one further window opening.

Der erfindungsgemäß vorgesehene Siebträger sorgt mit der am unteren Ende des Filterkäfigs bereits beim Stande der Technik vorhandenen ringförmigen Schale für eine Art "Schmutzfalle", in welcher von dem Kältemittel mitgeführte Schmutzpartikel, beispielsweise Abrieb von dem Trockenmittel, zurückgehalten und längere Zeit gesammelt werden können, ohne die Durchströmung des Filterkäfigs zu behindern. Diese Schmutzpartikel können nämlich das verhältnismäßig grobmaschige Sieb des Siebträgers von oben nach unten durchtreten, wobei die Vibrationen und Erschütterungen, denen der gesamte Kondensator im Betrieb ausgesetzt ist, den Durchtritt der Schmutzpartikel fördert. Die Rückkehr der Schmutzpartikel von unten nach oben, die nicht durch derartige Vibrationen unterstützt ist, erfolgt dagegen mit sehr viel geringerer Wahrscheinlichkeit, so daß das Sieb des Siebträgers in gewissem Sinne ähnlich einem Rückschlagventil wirkt. Die oberhalb des Siebträgers angeordneten Fensteröffnungen bzw. die hierin angebrachten Siebe können daher von dem Schmutz, der sich in der unteren ringförmigen Schale angesammelt hat, nur noch mit geringerer Wahrscheinlichkeit erreicht werden. Zumindest diese oberen Fensteröffnungen bleiben daher lange Zeit für eine Durchströmung frei. Daß sich die darunter liegenden Fensteröffnungen des Filterkäfigs, für welche der Siebträger eine Aufwärtsbewegung nicht verhindern kann, im Laufe der Zeit zusetzen, ist in diesem Zusammenhang ohne Interesse.The inventively provided Siebträger provides with the existing at the bottom of the filter cage annular shell for a kind of "dirt trap" in which entrained by the refrigerant dirt particles, such as abrasion of the desiccant, and can be collected for a long time, without to hinder the flow through the filter cage. This dirt particles can namely pass through the relatively coarse mesh screen of the portafilter from top to bottom, the vibrations and shocks to which the entire condenser is exposed during operation, promotes the passage of dirt particles. The return of the dirt particles from bottom to top, which is not supported by such vibrations, however, is much less likely, so that the screen of the portafilter acts in a sense similar to a check valve. The window openings arranged above the sieve carrier or the sieves mounted thereon can therefore only be reduced in size by the dirt which has accumulated in the lower annular bowl Probability can be achieved. At least these upper window openings therefore remain free for a long time for a flow. The fact that the underlying window openings of the filter cage, for which the filter holder can not prevent an upward movement, clog over time, is in this context without interest.

Insgesamt läßt sich mit der erfindungsgemäßen Ausgestaltung die Zeit erheblich verlängern, die der Kondensator ohne Wartung der Filtertrocknerpatrone in Betrieb sein kann.Overall, the design according to the invention can significantly increase the time that the capacitor can operate without servicing the filter-dryer cartridge.

Der Begriff "grobmaschig" versteht sich aus der Funktion des entsprechenden Siebes: Dieses muß auf alle Fälle den Durchtritt der Schmutzpartikel von oben nach unten gestatten. Im Übrigen erfüllt es seine Funktion als "Rückschlagventil" umso besser, je kleiner seine Maschengröße ist. Die für den jeweiligen Einzelfall geeignete Maschengröße läßt sich leicht durch Versuche ermitteln.The term "coarse mesh" is understood to mean the function of the corresponding sieve: this must in any case allow the passage of dirt particles from top to bottom. Incidentally, it fulfills its function as a "check valve" all the better, the smaller its mesh size. The appropriate mesh size for the particular case can be easily determined by experiment.

Zweckmäßig ist, wenn der Filterkäfig einen Satz von in derselben axialen Höhe angeordneten ersten Fensteröffnungen und einen Satz von darunter in einer anderen axialen Höhe angeordneten weiteren Fensteröffnungen aufweist. Der Durchströmungsquerschnitt für das Kältemittel wird auf diese Weise sehr groß, so daß die Drosselverluste klein bleiben.It is expedient if the filter cage has a set of first window openings arranged at the same axial height and a set of further window openings arranged therebelow at a different axial height. The flow cross section for the refrigerant is very large in this way, so that the throttle losses remain small.

Die Siebflächen des Filterkäfigs und/oder des Siebträgers können wahlweise aus Siebgewebe bestehen oder durch Perforationen in dem Filterkäfig und/oder dem Siebträger gebildet sein.The screen surfaces of the filter cage and / or the screen carrier may optionally consist of screen fabric or be formed by perforations in the filter cage and / or the filter holder.

Bevorzugt wird ferner, daß der Siebträger an seinem radial außen liegenden Rand mit einer Dichtlippe versehen ist. Diese Dichtlippe legt sich in der Montageposition der Filtertrocknerpatrone an der inneren Mantelfläche des Sammlergehäuses an und stellt sicher, daß das Kältemittel auf seinem Weg nach unten tatsächlich die von dem Siebträger getragenen Siebe durchströmen muß.It is further preferred that the filter holder on his radially outer edge is provided with a sealing lip. This sealing lip settles in the mounting position of the filter dryer cartridge on the inner circumferential surface of the collector housing and ensures that the refrigerant must actually flow through the carried by the portafilter screens on its way down.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert; es zeigen

Figur 1:
einen axialen Teilschnitt durch einen Sammler, der Teil eines Kondensators einer Fahrzeugklimaanlage ist;
Figur 2:
die Unteransicht eines Filterkäfiges, der Teil des Sammlers von Figur 1 ist;
Figur 3:
die Seitenansicht des Filterkäfiges von Figur 2;
Figur 4:
die Draufsicht auf den Filterkäfig der Figuren 2 und 3.
An embodiment of the invention will be explained in more detail with reference to the drawing; show it
FIG. 1:
a partial axial section through a collector which is part of a condenser of a vehicle air conditioning system;
FIG. 2:
the bottom view of a filter cage, which is part of the collector of Figure 1;
FIG. 3:
the side view of the filter cage of Figure 2;
FIG. 4:
the top view of the filter cage of Figures 2 and 3.

In Figur 1 ist mit dem Bezugszeichen 1 das Gehäuse eines Sammlers bezeichnet, der Teil eines Kondensators ist, wie er in der oben erwähnten EP 1 147 930 A1 beschrieben ist. Links an das Gehäuse 1 angesetzt zu denken ist ein Rohr-Rippen-Block, welcher von Kältemittel durchströmt wird. Das teilweise in flüssiger Phase, teilweise in gasförmiger Phase vorliegende Kältemittel verlässt den oberen Bereich des Rohr-Rippen-Blockes und tritt über eine Einlaßöffnung 2 in den Innenraum des Gehäuses 1 des Sammlers ein, durchströmt dieses in nachfolgend zu beschreibender Weise und tritt durch eine Auslaßöffnung 3 aus dem Gehäuse 1 des Sammlers aus und in einen unteren Abschnitt des Rohr-Rippen-Blockes ein.In Fig. 1, reference numeral 1 denotes the housing of a collector which is part of a condenser as mentioned in the above-mentioned EP 1 147 930 A1 is described. To think on the left of the housing 1 is a tube-and-fins block, through which refrigerant flows. The partially liquid phase, partially in the gaseous phase refrigerant leaves the upper portion of the tube-fin block and enters via an inlet port 2 in the interior of the housing 1 of the collector, flows through this in the manner to be described below and passes through an outlet opening 3 from the housing 1 of the collector and in a lower section of the tube-rib block.

Innerhalb des Gehäuses 1 des Sammlers und koaxial zu diesem ist eine Filtertrocknerpatrone angeordnet, die insgesamt das Bezugszeichen 4 trägt. Auch diese ist in Figur 1 nur in ihrem unteren Bereich dargestellt. Die Filtertrocknerpatrone 4 umfasst ein zylindrisches, rohrförmiges Trockenmittelgehäuse 5, das mit einer Vielzahl radialer Durchgangsöffnungen 6 versehen ist. Im Inneren des Trockenmittelgehäuses 5 befindet sich eine Schüttung 7 aus Trockenmittel, deren Körnung so groß ist, daß die einzelnen Trockenmittelpartikel die Durchgangsöffnungen 6 des Trockenmittelgehäuses 5 nicht passieren können.Within the housing 1 of the collector and coaxial therewith, a filter dryer cartridge is arranged, which carries the reference numeral 4 as a whole. Again, this is shown in Figure 1 only in its lower part. The filter-dryer cartridge 4 comprises a cylindrical, tubular desiccant housing 5, which is provided with a plurality of radial passage openings 6. Inside the desiccant housing 5 is a bed 7 of desiccant, the grain size is so large that the individual desiccant particles through the openings 6 of the desiccant housing 5 can not happen.

Das Trockenmittelgehäuse 5 ist an seinem unteren Rand, der hierzu radial nach innen ragende Vorsprünge 8 aufweist, in einer Umfangsnut 9 eines insgesamt mit dem Bezugszeichen 10 versehenen Filterkäfiges elastisch verrastet. Der Filterkäfig 10 besitzt die Form eines auf dem Kopf stehenden, also nach unten offenen Topfes. Er weist in seiner Umfangsfläche einen ersten Satz von großflächigen Fensteröffnungen 11 auf, die von Siebmaterial 12 abgedeckt sind. Axial unterhalb des ersten Satzes von Fensteröffnungen 11 ist ein zweiter Satz von Fensteröffnungen 13 vorgesehen, die ebenfalls mit Siebmaterial 14 abgedeckt sind. Die in derselben axialen Höhe liegenden Fensteröffnungen 11 sind durch achsparallele Stege 15, die ebenfalls in derselben axialen Höhe liegenden Fensteröffnungen 13 durch achsparallele Stege 16 voneinander getrennt, während die in unterschiedlichen axialen Höhen liegenden Fensteröffnungen 11 einerseits und 13 andererseits durch einen in Umfangsrichtung verlaufenden Steg 17 voneinander getrennt sind.The desiccant housing 5 is elastically locked at its lower edge, which for this purpose has radially inwardly projecting projections 8, in a circumferential groove 9 of a generally provided with the reference numeral 10 filter cage. The filter cage 10 has the shape of an upside down, so downwardly open pot. It has in its peripheral surface a first set of large window openings 11 which are covered by screen material 12. Axially below the first set of window openings 11, a second set of window openings 13 is provided, which are also covered with screen material 14. The lying in the same axial height window openings 11 are separated by axially parallel webs 15, which are also in the same axial height window openings 13 by axially parallel webs 16, while lying at different axial heights window openings 11 on the one hand and 13 on the other hand by a circumferentially extending web 17th are separated from each other.

Im unteren Endbereich des Filterkäfiges 10 ist an diesen eine radial nach außen verlaufende Ringschale 18 angeformt, die in ihrem radial äußersten Bereich in eine Dichtlippe 19 ausläuft. Die Dichtlippe 19 liegt elastisch federnd an der Innenmantelfläche des Gehäuses 1 des Sammlers an.In the lower end region of the filter cage 10, a radially outwardly extending annular shell 18 is formed on this, which terminates in its radially outermost region in a sealing lip 19. The sealing lip 19 is elastically resiliently against the inner circumferential surface of the housing 1 of the collector.

In der axialen Höhe des in Umfangsrichtung verlaufenden Steges 17, der die oberen Fensteröffnungen 11 von den unteren Fensteröffnungen 13 trennt, ist in die äußere Mantelfläche des Filterkäfiges 10 eine Nut 20 eingeformt. In diese Nut 20 ist ein ringförmiger, sich nach unten konisch erweiternder Siebträger 21 eingesetzt. Dieser besitzt in seiner konischen Mantelfläche, wie insbesondere der Figur 4 zu entnehmen ist, vier ringsegmentförmige Öffnungen 22, 23, 24, 25, die jeweils mit grobmaschigem Siebmaterial 26 abgedeckt sind. Der untere, radial außen liegende Rand des Siebträgers 21 ist nach oben zurückgebogen und als Dichtlippe 27 ausgebildet, welche elastisch federnd an der Innenmantelfläche des Gehäuses 1 des Sammlers anliegt.In the axial height of the circumferentially extending web 17, which separates the upper window openings 11 from the lower window openings 13, a groove 20 is formed in the outer circumferential surface of the filter cage 10. In this groove 20, an annular, downwardly conically widening portafilter 21 is used. This has in its conical lateral surface, as can be seen in particular in Figure 4, four annular segment-shaped openings 22, 23, 24, 25, which are each covered with coarse-meshed screen material 26. The lower, radially outer edge of the portafilter 21 is bent back upwards and formed as a sealing lip 27, which bears resiliently on the inner circumferential surface of the housing 1 of the collector.

Der oben beschriebene Sammler arbeitet wie folgt:The collector described above works as follows:

Der in Gasform vorliegende Anteil des durch die Einlaßöffnung 2 in den Innenraum des Gehäuses 1 strömenden Kältemittels fließt primär in den oberhalb des in Figur 1 dargestellten Bereich des Sammlers und tritt dort, aber auch in dem in der Zeichnung dargestellten Bereich des Trockenmittelgehäuses 5, über die Durchgangsöffnungen 6 in den Innenraum des Trockenmittelgehäuses 5 ein und wird dort von dem Trockenmittel 7 getrocknet. Die flüssige Phase des Kältemittels dagegen strömt hauptsächlich in der durch die Pfeile dargestellten Richtung in dem Ringspalt zwischen der Filtertrocknerpatrone 4 und dem Gehäuse 1 des Sammlers nach unten und dann mit einem ersten Teilstrom in radialer Richtung durch die oberen Fensteröffnungen 11 des Filterkäfiges 10 nach innen, wechselt dort wiederum seine Strömungsrichtung und fließt in axialer Richtung nach unten aus dem Filterkäfig 10 und durch die Auslaßöffnung 3 des Gehäuses 1 aus dem Sammler aus und in den nicht dargestellten Rohr-Rippen-Block des Kondensators ein.The present in gaseous form of the refrigerant flowing through the inlet opening 2 into the interior of the housing 1 flows primarily into the region of the collector shown in Figure 1 and occurs there, but also in the region of the desiccant housing 5 shown in the drawing, on the Through openings 6 in the interior of the desiccant housing 5 and is there dried by the desiccant 7. On the other hand, the liquid phase of the refrigerant flows mainly in the direction shown by the arrows in the annular gap between the filter-dryer cartridge 4 and the housing 1 of the collector down and then with a first partial flow in the radial direction through the upper window openings 11 of the filter cage 10 inward, there again changes its flow direction and flows in the axial direction down from the filter cage 10 and through the outlet port. 3 of the housing 1 from the collector and in the not shown tube-fin block of the capacitor.

Ein zweiter Teilstrom des flüssigen Kältemittels durchtritt die Maschen des Siebmaterials 26, fließt dann radial nach innen durch die unteren Fensteröffnungen 13 des Filterkäfigs 10 und das diese Öffnungen 13 abdeckende Siebmaterial 14 hindurch, vereinigt sich mit dem Kältemittelstrom, der die oberen Fensteröffnungen 11 durchtreten hat und strömt gemeinsam mit diesem über die Auslaßöffnung 3 aus.A second partial flow of the liquid refrigerant passes through the meshes of the screen material 26, then flows radially inwardly through the lower window openings 13 of the filter cage 10 and the screen material 14 covering these openings 13, merges with the refrigerant flow which has passed through the upper window openings 11 and flows together with this via the outlet opening 3.

Schmutzteilchen, beispielsweise Abrieb des Trockenmittelmaterials 7, welches von dem Kältemittelstrom mitgeführt wird, wird durch das Siebmaterial 12 der oberen Fensteröffnungen 11 und das Siebmaterial 14 der unteren Fensteröffnungen 13 zurückgehalten. Aufgrund der Vibrationen, denen der gesamte Kondensator und insbesondere auch der Filterkäfig 10 im Betrieb der Anlage ausgesetzt ist, fällt Schmutz, der von dem Filtermaterial 12 der oberen Fensteröffnungen 11 zurückgehalten wurde, durch das grobmaschige Siebmaterial 26 über den Öffnungen 22 bis 25 des Siebträgers 21 hindurch und sammelt sich auf der ringförmigen Schale 18. Auch das Durchtreten des Siebmaterials 26 wird durch die Vibrationen unterstützt, denen der Filterkäfig 10 ständig ausgesetzt ist.Dirt particles, for example, abrasion of the desiccant material 7, which is carried by the refrigerant flow, is retained by the screen material 12 of the upper window openings 11 and the screen material 14 of the lower window openings 13. Due to the vibrations to which the entire condenser and in particular also the filter cage 10 is exposed during operation of the plant, dirt retained by the filter material 12 of the upper window openings 11 passes through the coarse mesh material 26 via the openings 22 to 25 of the portafilter 21 Also, the passage of the screen material 26 is supported by the vibrations to which the filter cage 10 is constantly exposed.

Eine Rückkehr der Schmutzpartikel, die sich in der ringförmigen Schale 18 des Filterkäfiges 10 abgesetzt haben, in den Bereich der oberen Fensteröffnungen 11 des Siebkäfiges 10 wird durch das grobmaschige Siebmaterial 26 des Siebträgers 21 weitgehend verhindert. Die nach oben gerichtete Bewegung des Schmutzes ist - anders als die nach unten gerichtete Bewegung - nicht durch die Vibrationen des Siebkäfiges 10 unterstützt, so daß durch den Siebträger 21 und das an ihm befindliche Siebmaterial eine Art "Rückschlagventil" für die Bewegung von Schmutzpartikeln gebildet wird. Dieses unterbindet allerdings eine Bewegung in der Rückwärtsrichtung nicht vollständig sondern macht diese nur unwahrscheinlicher als die Bewegung der Schmutzpartikel in Vorwärtsrichtung, also nach unten.A return of the dirt particles that have settled in the annular shell 18 of the filter cage 10, in the region of the upper window openings 11 of the screen cage 10 is largely prevented by the coarse-meshed screen material 26 of the portafilter 21. The upward movement of the dirt is - unlike the downward movement - not supported by the vibrations of the Siebkäfiges 10 so that a sort of "check valve" is formed by the Siebträger 21 and the sieve material located on it for the movement of dirt particles , However, this does not completely prevent a movement in the reverse direction but makes them only less likely than the movement of the dirt particles in the forward direction, ie down.

Dies bedeutet, daß zwar ein Zusetzen des Siebmaterials 14, welches die unteren Fensteröffnungen 13 des Filterkäfiges 10 überdeckt, mittelfristig nicht verhindert werden kann, daß aber das Siebmaterial 12, welches die oberen Fensteröffnungen 11 des Filterkäfiges 10 abdeckt, auf lange Zeit verstopfungsfrei und dadurch funktionsfähig bleibt.This means that although a clogging of the screen material 14, which covers the lower window openings 13 of the filter cage 10, medium term can not be prevented, but that the screen material 12, which covers the upper window openings 11 of the filter cage 10, for a long time without blockage and thus functional remains.

Der Siebträger 21 erfüllt daher im Zusammenspiel mit der ringförmigen Schale 18 des Filterkäfigs 10 die Funktion einer "Schmutzfalle".The filter holder 21 therefore fulfills the function of a "dirt trap" in interaction with the annular shell 18 of the filter cage 10.

Claims (5)

  1. Filter drying cartridge (4) for the collector of a condenser of an air conditioning system, in particular of a vehicle air conditioning system, with
    a) a drying agent housing (5) in which a drying agent (7) is accommodated and which comprises through-flow openings (6) for the refrigerant of the air conditioning system;
    b) a filter cage (10) which is disposed below the drying agent housing (5) and comprises at least one window opening (11), which forms a screen area (12), in its circumferential surface and a radially extending, annular shell (18) at its lower end,
    characterized in that
    c) the filter cage (10) comprises at least one further window opening (13) which forms a screen area (14), is disposed below the at least one first window opening (11) and is separated from this by a material web (17) extending in the circumferential direction;
    d) a screen carrier (21), which extends radially outwards, is fastened in the region of the material web (17) to the filter cage (10) and bears a relatively large-meshed screen (26) through which the refrigerant must flow on its way from the top to the bottom to the at least one further window opening (13) .
  2. Filter drying cartridge according to Claim 1, characterized in that the filter cage (10) comprises a first set of first window openings (11), which are disposed at the same axial height, and a set of further window openings (13), which are disposed underneath at a different axial height.
  3. Filter drying cartridge according to Claim 1 or 2, characterized in that the screens (12, 14, 26) of the filter cage (10) and/or of the screen carrier (21) consist of screen cloth.
  4. Filter drying cartridge according to Claim 1 or 2, characterized in that the screens of the filter cage and/or of the screen carrier are formed by perforations.
  5. Filter drying cartridge according to any one of the preceding Claims, characterized in that the screen carrier (21) is provided with a sealing lip (27) at its radially outer edge.
EP20030010038 2002-05-10 2003-05-02 Filter drier cartridge Expired - Lifetime EP1361401B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002120673 DE10220673C1 (en) 2002-05-10 2002-05-10 Filter drier cartridge for condensate collector in motor vehicle air conditioning, has filter cage with screened openings separated by cross bar
DE10220673 2002-05-10

Publications (2)

Publication Number Publication Date
EP1361401A1 EP1361401A1 (en) 2003-11-12
EP1361401B1 true EP1361401B1 (en) 2007-08-29

Family

ID=7714508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030010038 Expired - Lifetime EP1361401B1 (en) 2002-05-10 2003-05-02 Filter drier cartridge

Country Status (4)

Country Link
EP (1) EP1361401B1 (en)
DE (2) DE10220673C1 (en)
ES (1) ES2290376T3 (en)
PT (1) PT1361401E (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10353939A1 (en) * 2003-11-18 2005-06-16 Modine Manufacturing Co., Racine Capacitor and manufacturing process
DE102004040880B4 (en) * 2004-08-24 2008-03-27 Jahn Gmbh Umform- Und Zerspanungstechnik Filtration device for a cooling medium circuit, in particular for a car air conditioning system
DE102005005186A1 (en) * 2005-02-03 2006-08-10 Behr Gmbh & Co. Kg The condenser for a motor vehicle air conditioning system has an included refrigerant collector and dryer contained within a cylindrical housing on one side through which the refrigerant passes through long ducts
ITMI20110252A1 (en) * 2011-02-21 2012-08-22 Skg Italia S P A MANIFOLD PIPE FOR CONDENSERS OF AIR CONDITIONING SYSTEMS FOR VEHICLES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402927B4 (en) * 1994-02-01 2008-02-14 Behr Gmbh & Co. Kg Condenser for an air conditioning system of a vehicle
DE29700640U1 (en) * 1997-01-15 1997-05-22 Controls Gmbh Deutsche Vehicle air conditioning system and dryer cartridge for a vehicle air conditioning system
ATE210027T1 (en) * 2000-03-24 2001-12-15 Modine Mfg Co CAPACITOR FOR A MOTOR VEHICLE AIR CONDITIONING SYSTEM

Also Published As

Publication number Publication date
DE50308044D1 (en) 2007-10-11
PT1361401E (en) 2007-10-23
EP1361401A1 (en) 2003-11-12
DE10220673C1 (en) 2003-07-03
ES2290376T3 (en) 2008-02-16

Similar Documents

Publication Publication Date Title
EP1669125B2 (en) Process for the purification of compressed air from the compressed air producing systems of a motor vehicle, and cartridge therefor
DE102009025393A1 (en) 3-stage fuel filter
EP1606037B1 (en) Fuel filtering system
DE102005039059B3 (en) Replaceable air-cleaning cartridge for compressed air units in cars, contains a treatment- and/or filter-material and a cyclone separator system comprising several cyclones connected in parallel and-or in series
DE4427753A1 (en) Oil separator
WO2012069338A1 (en) Fuel filter
DE2931865A1 (en) FILTER UNIT
DE4222495C2 (en) Backwashable liquid filter
DE112015002274T5 (en) Ventilation unit for vehicle air conditioning
EP0711588B1 (en) Filter, especially liquid filter
EP1866053B1 (en) Oil separator, air purifier unit and compressed air supply
DE102007055308A1 (en) Filtration unit for kitchen extraction hood, includes second intake zone separated from first intake zone by drain region
DE602004006751T2 (en) AIR DRYER CARTRIDGE
EP1361401B1 (en) Filter drier cartridge
DE102010041312A1 (en) Apparatus for removing screenings from liquid flowing in a channel
DE10136161A1 (en) Drain unit, for a sewage/rainwater drainage system, has openings in the base shrouded by raised projections, to allow the flow to pass over carrying particles while cleaner part-flows escape through the openings into a lower conduit
DE102005057630A1 (en) Air dryer, especially for use with compressed air brakes in automobiles, includes non-woven partially covering annular oil collection space for preventing ingress of oil and dirt
DE202008002927U1 (en) Liquid filter, in particular for fuel
DE3703271C1 (en) Moisture and oil separator
EP0848980B1 (en) Assembly for fixing bag filters to a shaking device
DE3513166A1 (en) AIR CONDITIONER
DE4409124C2 (en) Device for cleaning roof drain water
DE2646259C3 (en) Compressed air cleaners, in particular for braking systems for motor vehicles
EP0026270A1 (en) Backwash filter
DE202004021066U1 (en) Air dryer cartridge for vehicle has coalescing mechanism to capture oil droplets in air received from source and being downstream of desiccant

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20040327

AKX Designation fees paid

Designated state(s): DE ES FR PT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR PT

REF Corresponds to:

Ref document number: 50308044

Country of ref document: DE

Date of ref document: 20071011

Kind code of ref document: P

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20071010

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2290376

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080530

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20090204

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090204

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080503

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080503

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090728

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101201